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The osx x86_64 swt jar as available in the Eclipse 4.6 (Neon) release for OSX. It is suitable for use with jface and other dependencies available from maven central in the org.eclipse.scout.sdk.deps group. The sources is copied from swt-4.6-cocoa-macosx-x86_64.zip from http://download.eclipse.org/eclipse/downloads/drops4/R-4.6-201606061100/ and javadoc is generated from sources.
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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.custom;
import org.eclipse.swt.*;
import org.eclipse.swt.accessibility.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.DPIUtil.*;
import org.eclipse.swt.widgets.*;
/**
*
* Instances of this class implement the notebook user interface
* metaphor. It allows the user to select a notebook page from
* set of pages.
*
* The item children that may be added to instances of this class
* must be of type CTabItem.
* Control children are created and then set into a
* tab item using CTabItem#setControl.
*
* Note that although this class is a subclass of Composite,
* it does not make sense to set a layout on it.
*
*
* - Styles:
* - CLOSE, TOP, BOTTOM, FLAT, BORDER, SINGLE, MULTI
* - Events:
* - Selection
* - "CTabFolder2"
*
*
* Note: Only one of the styles TOP and BOTTOM
* may be specified.
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see CTabFolder, CTabItem snippets
* @see SWT Example: CustomControlExample
* @see Sample code and further information
* @noextend This class is not intended to be subclassed by clients.
*/
public class CTabFolder extends Composite {
/**
* marginWidth specifies the number of pixels of horizontal margin
* that will be placed along the left and right edges of the form.
*
* The default value is 0.
*/
public int marginWidth = 0;
/**
* marginHeight specifies the number of pixels of vertical margin
* that will be placed along the top and bottom edges of the form.
*
* The default value is 0.
*/
public int marginHeight = 0;
/**
* A multiple of the tab height that specifies the minimum width to which a tab
* will be compressed before scrolling arrows are used to navigate the tabs.
*
* NOTE This field is badly named and can not be fixed for backwards compatibility.
* It should not be capitalized.
*
* @deprecated This field is no longer used. See setMinimumCharacters(int)
*/
@Deprecated
public int MIN_TAB_WIDTH = 4;
/**
* Color of innermost line of drop shadow border.
*
* NOTE This field is badly named and can not be fixed for backwards compatibility.
* It should be capitalized.
*
* @deprecated drop shadow border is no longer drawn in 3.0
*/
@Deprecated
public static RGB borderInsideRGB = new RGB (132, 130, 132);
/**
* Color of middle line of drop shadow border.
*
* NOTE This field is badly named and can not be fixed for backwards compatibility.
* It should be capitalized.
*
* @deprecated drop shadow border is no longer drawn in 3.0
*/
@Deprecated
public static RGB borderMiddleRGB = new RGB (143, 141, 138);
/**
* Color of outermost line of drop shadow border.
*
* NOTE This field is badly named and can not be fixed for backwards compatibility.
* It should be capitalized.
*
* @deprecated drop shadow border is no longer drawn in 3.0
*/
@Deprecated
public static RGB borderOutsideRGB = new RGB (171, 168, 165);
/* sizing, positioning */
boolean onBottom = false;
boolean single = false;
boolean simple = true;
int fixedTabHeight = SWT.DEFAULT;
int tabHeight;
int minChars = 20;
boolean borderVisible = false;
/* item management */
CTabFolderRenderer renderer;
CTabItem items[] = new CTabItem[0];
/** index of the left most visible tab. */
int firstIndex = -1;
int selectedIndex = -1;
/**
* Indices of the elements in the {@link #items} array, used to manage tab
* visibility and candidates to be hidden/shown next.
*
* If there is not enough place for all tabs, tabs starting from the end of
* the {@link #priority} array will be hidden first (independently from the
* {@link #mru} flag!) => the right most elements have the highest priority
* to be hidden.
*
* If there is more place to show previously hidden tabs, tabs starting from
* the beginning of the {@link #priority} array will be made visible first
* (independently from the {@link #mru} flag!) => the left most elements
* have the highest priority to be shown.
*
* The update strategy of the {@link #priority} array however depends on the
* {@link #mru} flag.
*
* If {@link #mru} flag is set, the first index is always the index of the
* currently selected tab, next one is the tab selected before current
* etc...
*
* Example: [4,2,5,1,3,0], just representing the last selection order.
*
* If {@link #mru} flag is not set, the first index is always the index of
* the left most visible tab ({@link #firstIndex} field), next indices are
* incremented by one up to priority.length-1, and the rest
* filled with indices starting with firstIndex-1 and
* decremented by one until 0 index is reached.
*
* The tabs between first index and the index of the currently selected tab
* are always visible.
*
* Example: 6 tabs, 2 and 3 are indices of currently shown tabs:
* [2,3,4,5,1,0]. The array consists of two blocks: sorted ascending from
* first visible (2) to last available (5), and the rest sorted descending
* (1,0). 4 and 5 are the hidden tabs on the right side, 0 and 1 are the
* hidden tabs on the left side from the visible tabs 2 and 3.
*
* @see #updateItems(int)
* @see #setItemLocation(GC)
*/
int[] priority = new int[0];
boolean mru = false;
Listener listener;
boolean ignoreTraverse;
boolean useDefaultRenderer;
/* External Listener management */
CTabFolder2Listener[] folderListeners = new CTabFolder2Listener[0];
// support for deprecated listener mechanism
CTabFolderListener[] tabListeners = new CTabFolderListener[0];
/* Selected item appearance */
Image selectionBgImage;
Color[] selectionGradientColors;
int[] selectionGradientPercents;
boolean selectionGradientVertical;
Color selectionForeground;
Color selectionBackground;
/* Unselected item appearance */
Color[] gradientColors;
int[] gradientPercents;
boolean gradientVertical;
boolean showUnselectedImage = true;
// close, min/max and chevron buttons
boolean showClose = false;
boolean showUnselectedClose = true;
boolean showMin = false;
boolean minimized = false;
boolean showMax = false;
boolean maximized = false;
ToolBar minMaxTb;
ToolItem maxItem;
ToolItem minItem;
Image maxImage;
Image minImage;
boolean hoverTb;
Rectangle hoverRect = new Rectangle(0,0,0,0);
boolean hovering;
boolean hoverTimerRunning;
boolean showChevron = false;
Menu showMenu;
ToolBar chevronTb;
ToolItem chevronItem;
int chevronCount;
boolean chevronVisible = true;
Image chevronImage;
Control topRight;
int topRightAlignment = SWT.RIGHT;
boolean ignoreResize;
Control[] controls;
int[] controlAlignments;
Rectangle[] controlRects;
Image[] controlBkImages;
int updateFlags;
final static int REDRAW = 1 << 1;
final static int REDRAW_TABS = 1 << 2;
final static int UPDATE_TAB_HEIGHT = 1 << 3;
Runnable updateRun;
// when disposing CTabFolder, don't try to layout the items or
// change the selection as each child is destroyed.
boolean inDispose = false;
// keep track of size changes in order to redraw only affected area
// on Resize
Point oldSize;
Font oldFont;
// internal constants
static final int DEFAULT_WIDTH = 64;
static final int DEFAULT_HEIGHT = 64;
static final int SELECTION_FOREGROUND = SWT.COLOR_LIST_FOREGROUND;
static final int SELECTION_BACKGROUND = SWT.COLOR_LIST_BACKGROUND;
static final int FOREGROUND = SWT.COLOR_WIDGET_FOREGROUND;
static final int BACKGROUND = SWT.COLOR_WIDGET_BACKGROUND;
//TODO: add setter for spacing?
static final int SPACING = 3;
static final boolean IS_GTK;
static {
String platform = SWT.getPlatform();
IS_GTK = "gtk".equals(platform);
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
*
* The style value is either one of the style constants defined in
* class SWT which is applicable to instances of this
* class, or must be built by bitwise OR'ing together
* (that is, using the int "|" operator) two or more
* of those SWT style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
*
*
* @param parent a widget which will be the parent of the new instance (cannot be null)
* @param style the style of widget to construct
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
*
*
* @see SWT#TOP
* @see SWT#BOTTOM
* @see SWT#FLAT
* @see SWT#BORDER
* @see SWT#SINGLE
* @see SWT#MULTI
* @see #getStyle()
*/
public CTabFolder(Composite parent, int style) {
super(parent, checkStyle (parent, style));
init(style);
}
void init(int style) {
super.setLayout(new CTabFolderLayout());
int style2 = super.getStyle();
oldFont = getFont();
onBottom = (style2 & SWT.BOTTOM) != 0;
showClose = (style2 & SWT.CLOSE) != 0;
// showMin = (style2 & SWT.MIN) != 0; - conflicts with SWT.TOP
// showMax = (style2 & SWT.MAX) != 0; - conflicts with SWT.BOTTOM
single = (style2 & SWT.SINGLE) != 0;
borderVisible = (style & SWT.BORDER) != 0;
//set up default colors
Display display = getDisplay();
selectionForeground = display.getSystemColor(SELECTION_FOREGROUND);
selectionBackground = display.getSystemColor(SELECTION_BACKGROUND);
renderer = new CTabFolderRenderer(this);
useDefaultRenderer = true;
controls = new Control[0];
controlAlignments = new int[0];
controlRects = new Rectangle[0];
controlBkImages = new Image[0];
updateTabHeight(false);
// Add all listeners
listener = new Listener() {
@Override
public void handleEvent(Event event) {
switch (event.type) {
case SWT.Dispose: onDispose(event); break;
case SWT.DragDetect: onDragDetect(event); break;
case SWT.FocusIn: onFocus(event); break;
case SWT.FocusOut: onFocus(event); break;
case SWT.KeyDown: onKeyDown(event); break;
case SWT.MenuDetect: onMenuDetect(event); break;
case SWT.MouseDoubleClick: onMouseDoubleClick(event); break;
case SWT.MouseDown: onMouse(event); break;
case SWT.MouseEnter: onMouse(event); break;
case SWT.MouseExit: onMouse(event); break;
case SWT.MouseHover: onMouse(event); break;
case SWT.MouseMove: onMouse(event); break;
case SWT.MouseUp: onMouse(event); break;
case SWT.Paint: onPaint(event); break;
case SWT.Resize: onResize(event); break;
case SWT.Traverse: onTraverse(event); break;
case SWT.Selection: onSelection(event); break;
}
}
};
int[] folderEvents = new int[]{
SWT.Dispose,
SWT.DragDetect,
SWT.FocusIn,
SWT.FocusOut,
SWT.KeyDown,
SWT.MenuDetect,
SWT.MouseDoubleClick,
SWT.MouseDown,
SWT.MouseEnter,
SWT.MouseExit,
SWT.MouseHover,
SWT.MouseMove,
SWT.MouseUp,
SWT.Paint,
SWT.Resize,
SWT.Traverse,
};
for (int i = 0; i < folderEvents.length; i++) {
addListener(folderEvents[i], listener);
}
initAccessible();
}
static int checkStyle (Composite parent, int style) {
int mask = SWT.CLOSE | SWT.TOP | SWT.BOTTOM | SWT.FLAT | SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT | SWT.SINGLE | SWT.MULTI;
style = style & mask;
// TOP and BOTTOM are mutually exclusive.
// TOP is the default
if ((style & SWT.TOP) != 0) style = style & ~SWT.BOTTOM;
// SINGLE and MULTI are mutually exclusive.
// MULTI is the default
if ((style & SWT.MULTI) != 0) style = style & ~SWT.SINGLE;
// reduce the flash by not redrawing the entire area on a Resize event
style |= SWT.NO_REDRAW_RESIZE;
//TEMPORARY CODE
/*
* In Right To Left orientation on Windows, all GC calls that use a brush are drawing
* offset by one pixel. This results in some parts of the CTabFolder not drawing correctly.
* To alleviate some of the appearance problems, allow the OS to draw the background.
* This does not draw correctly but the result is less obviously wrong.
*/
if ((style & SWT.RIGHT_TO_LEFT) != 0) return style;
if ((parent.getStyle() & SWT.MIRRORED) != 0 && (style & SWT.LEFT_TO_RIGHT) == 0) return style;
return style | SWT.DOUBLE_BUFFERED;
}
/**
*
* Adds the listener to the collection of listeners who will
* be notified when a tab item is closed, minimized, maximized,
* restored, or to show the list of items that are not
* currently visible.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @see CTabFolder2Listener
* @see #removeCTabFolder2Listener(CTabFolder2Listener)
*
* @since 3.0
*/
public void addCTabFolder2Listener(CTabFolder2Listener listener) {
checkWidget();
if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
// add to array
CTabFolder2Listener[] newListeners = new CTabFolder2Listener[folderListeners.length + 1];
System.arraycopy(folderListeners, 0, newListeners, 0, folderListeners.length);
folderListeners = newListeners;
folderListeners[folderListeners.length - 1] = listener;
}
/**
* Adds the listener to the collection of listeners who will
* be notified when a tab item is closed.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @see CTabFolderListener
* @see #removeCTabFolderListener(CTabFolderListener)
*
* @deprecated use addCTabFolder2Listener(CTabFolder2Listener)
*/
@Deprecated
public void addCTabFolderListener(CTabFolderListener listener) {
checkWidget();
if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
// add to array
CTabFolderListener[] newTabListeners = new CTabFolderListener[tabListeners.length + 1];
System.arraycopy(tabListeners, 0, newTabListeners, 0, tabListeners.length);
tabListeners = newTabListeners;
tabListeners[tabListeners.length - 1] = listener;
// display close button to be backwards compatible
if (!showClose) {
showClose = true;
updateFolder(REDRAW);
}
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the user changes the receiver's selection, by sending
* it one of the messages defined in the SelectionListener
* interface.
*
* widgetSelected is called when the user changes the selected tab.
* widgetDefaultSelected is not called.
*
*
* @param listener the listener which should be notified when the user changes the receiver's selection
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SelectionListener
* @see #removeSelectionListener
* @see SelectionEvent
*/
public void addSelectionListener(SelectionListener listener) {
checkWidget();
if (listener == null) {
SWT.error(SWT.ERROR_NULL_ARGUMENT);
}
TypedListener typedListener = new TypedListener(listener);
addListener(SWT.Selection, typedListener);
addListener(SWT.DefaultSelection, typedListener);
}
Rectangle[] computeControlBounds (Point size, boolean[][] position) {
if (controls == null || controls.length == 0) return new Rectangle[0];
Rectangle[] rects = new Rectangle[controls.length];
for (int i = 0; i < rects.length; i++) {
rects[i] = new Rectangle(0, 0, 0, 0);
}
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BORDER, SWT.NONE, 0, 0, 0, 0);
int borderRight = trim.width + trim.x;
int borderLeft = -trim.x;
int borderBottom = trim.height + trim.y;
int borderTop = -trim.y;
Point[] tabControlSize = new Point[controls.length];
boolean[] overflow = new boolean [controls.length];
//Left Control
int leftWidth = 0;
int x = borderLeft + SPACING;
int rightWidth = 0;
int allWidth = 0;
for (int i = 0; i < controls.length; i++) {
Point ctrlSize = tabControlSize[i] = !controls[i].isDisposed() && controls[i].getVisible() ? controls[i].computeSize(SWT.DEFAULT, SWT.DEFAULT) : new Point(0,0);
int alignment = controlAlignments[i];
if ((alignment & SWT.LEAD) != 0) {
rects[i].width = ctrlSize.x;
rects[i].height = getControlHeight(ctrlSize);
rects[i].x = x;
rects[i].y = getControlY(size, rects, borderBottom, borderTop, i);
x += ctrlSize.x;
leftWidth += ctrlSize.x;
} else {
if ((alignment & (SWT.FILL | SWT.WRAP)) == 0) {
rightWidth += ctrlSize.x;
}
allWidth += ctrlSize.x;
}
}
if (leftWidth > 0) leftWidth += SPACING * 2;
int itemWidth = 0;
for (int i = 0; i < items.length; i++) {
if (items[i].showing) itemWidth += items[i].width;
}
int maxWidth = size.x - borderLeft - leftWidth - borderRight;
int availableWidth = Math.max(0, maxWidth - itemWidth - rightWidth);
if (rightWidth > 0) availableWidth -= SPACING * 2;
x = size.x - borderRight - SPACING;
if (itemWidth + allWidth <= maxWidth) {
//Everything fits
for (int i = 0; i < controls.length; i++) {
int alignment = controlAlignments[i];
if ((alignment & SWT.TRAIL) != 0) {
Point ctrlSize = tabControlSize[i];
x -= ctrlSize.x;
rects[i].width = ctrlSize.x;
rects[i].height = getControlHeight(ctrlSize);
rects[i].x = x;
rects[i].y = getControlY(size, rects, borderBottom, borderTop, i);
if ((alignment & (SWT.FILL | SWT.WRAP)) != 0) availableWidth -= ctrlSize.x;
}
if (tabControlSize[i].y >= tabHeight) {
overflow[i] = true;
}
}
} else {
for (int i = 0; i < controls.length; i++) {
int alignment = controlAlignments[i];
Point ctrlSize = tabControlSize[i];
if ((alignment & SWT.TRAIL) != 0) {
if ((alignment & (SWT.FILL | SWT.WRAP)) == 0) {
x -= ctrlSize.x;
rects[i].width = ctrlSize.x;
rects[i].height = getControlHeight(ctrlSize);
rects[i].x = x;
rects[i].y = getControlY(size, rects, borderBottom, borderTop, i);
} else if (((alignment & (SWT.WRAP)) != 0 && ctrlSize.x < availableWidth)) {
x -= ctrlSize.x;
rects[i].width = ctrlSize.x;
rects[i].height = getControlHeight(ctrlSize);
rects[i].x = x;
rects[i].y = getControlY(size, rects, borderBottom, borderTop, i);
availableWidth -= ctrlSize.x;
} else if ((alignment & (SWT.FILL)) != 0 && (alignment & (SWT.WRAP)) == 0) {
rects[i].width = 0;
rects[i].height = getControlHeight(ctrlSize);
rects[i].x = x;
rects[i].y = getControlY(size, rects, borderBottom, borderTop, i);
} else {
if ((alignment & (SWT.WRAP)) != 0) {
overflow[i] = true;
}
}
}
}
}
//Any space, distribute amongst FILL
if (availableWidth > 0) {
int fillCount = 0;
for (int i = 0; i < controls.length; i++) {
int alignment = controlAlignments[i];
if ((alignment & SWT.TRAIL) != 0 && (alignment & SWT.FILL) != 0 && !overflow[i]) {
fillCount++;
}
}
if (fillCount != 0) {
int extraSpace = availableWidth/fillCount;
int addedSpace = 0;
for (int i = 0; i < controls.length; i++) {
int alignment = controlAlignments[i];
if ((alignment & SWT.TRAIL) != 0) {
if ((alignment & SWT.FILL) != 0 && !overflow[i]) {
rects[i].width += extraSpace;
addedSpace += extraSpace;
}
if (!overflow[i]) {
rects[i].x -= addedSpace;
}
}
}
}
}
//Go through overflow laying out all wrapped controls
Rectangle bodyTrim = renderer.computeTrim(CTabFolderRenderer.PART_BODY, SWT.NONE, 0, 0, 0, 0);
int bodyRight = bodyTrim.width + bodyTrim.x;
int bodyLeft = -bodyTrim.x;
int bodyWidth = size.x - bodyLeft - bodyRight;
x = size.x - bodyRight;
int y = onBottom ? this.getSize().y - getTabHeight() + 2*bodyTrim.y : -bodyTrim.y;
availableWidth = bodyWidth;
int maxHeight = 0;
for (int i = 0; i < controls.length; i++) {
Point ctrlSize = tabControlSize[i];
if (overflow[i]) {
if (availableWidth > ctrlSize.x) {
x -= ctrlSize.x;
rects[i].width = ctrlSize.x;
rects[i].y = onBottom ? y - ctrlSize.y : y;
rects[i].height = ctrlSize.y;
rects[i].x = x;
availableWidth -= ctrlSize.x;
maxHeight = Math.max(maxHeight, ctrlSize.y);
} else {
x = size.x - bodyRight;
y += maxHeight;
maxHeight = 0;
availableWidth = bodyWidth;
if (availableWidth > ctrlSize.x) {
//Relayout this control in the next line
i--;
} else {
ctrlSize = controls[i].isDisposed() ? new Point(0,0) : controls[i].computeSize(bodyWidth, SWT.DEFAULT);
rects[i].width = bodyWidth;
rects[i].y = onBottom ? y - ctrlSize.y : y;
rects[i].height = ctrlSize.y;
rects[i].x = size.x - ctrlSize.x - bodyRight;
y += ctrlSize.y;
}
}
}
}
if (showChevron) {
int i = 0, lastIndex = -1;
while (i < priority.length && items[priority[i]].showing) {
lastIndex = Math.max(lastIndex, priority[i++]);
}
if (lastIndex == -1) lastIndex = selectedIndex;
if (lastIndex != -1) {
CTabItem lastItem = items[lastIndex];
int w = lastItem.x + lastItem.width + SPACING;
if (!simple && lastIndex == selectedIndex) w -= (renderer.curveIndent - 7);
rects[controls.length - 1].x = w;
}
}
if (position != null) position[0] = overflow;
return rects;
}
int getControlHeight(Point ctrlSize) {
return fixedTabHeight == SWT.DEFAULT ? Math.max(tabHeight - 1, ctrlSize.y) : ctrlSize.y;
}
/*
* This class was not intended to be subclassed but this restriction
* cannot be enforced without breaking backward compatibility.
*/
//protected void checkSubclass () {
// String name = getClass ().getName ();
// int index = name.lastIndexOf ('.');
// if (!name.substring (0, index + 1).equals ("org.eclipse.swt.custom.")) {
// SWT.error (SWT.ERROR_INVALID_SUBCLASS);
// }
//}
@Override
public Rectangle computeTrim (int x, int y, int width, int height) {
checkWidget();
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BODY, SWT.NONE, x, y, width, height);
Point size = new Point(width, height);
int wrapHeight = getWrappedHeight(size);
if (onBottom) {
trim.height += wrapHeight;
} else {
trim.y -= wrapHeight;
trim.height += wrapHeight;
}
return trim;
}
Image createButtonImage(Display display, int button) {
GC tempGC = new GC (this);
Point size = renderer.computeSize(button, SWT.NONE, tempGC, SWT.DEFAULT, SWT.DEFAULT);
tempGC.dispose();
Rectangle trim = renderer.computeTrim(button, SWT.NONE, 0, 0, 0, 0);
Image image = new Image (display, size.x - trim.width, size.y - trim.height);
GC gc = new GC (image);
RGB transparent;
if (button == CTabFolderRenderer.PART_CHEVRON_BUTTON) {
transparent = new RGB(0xFF, 0xFF, 0xFF);
} else {
transparent = new RGB(0xFD, 0, 0);
}
Color transColor = new Color(display, transparent);
gc.setBackground(transColor);
gc.fillRectangle(image.getBounds());
renderer.draw(button, SWT.NONE, new Rectangle(trim.x, trim.y, size.x, size.y), gc);
gc.dispose ();
transColor.dispose();
final ImageData imageData = image.getImageDataAtCurrentZoom();
imageData.transparentPixel = imageData.palette.getPixel(transparent);
image.dispose();
image = new Image(display, new AutoScaleImageDataProvider(display, imageData, DPIUtil.getDeviceZoom()));
return image;
}
void createItem (CTabItem item, int index) {
if (0 > index || index > getItemCount ())SWT.error (SWT.ERROR_INVALID_RANGE);
item.parent = this;
CTabItem[] newItems = new CTabItem [items.length + 1];
System.arraycopy(items, 0, newItems, 0, index);
newItems[index] = item;
System.arraycopy(items, index, newItems, index + 1, items.length - index);
items = newItems;
if (selectedIndex >= index) selectedIndex ++;
int[] newPriority = new int[priority.length + 1];
int next = 0, priorityIndex = priority.length;
for (int i = 0; i < priority.length; i++) {
if (!mru && priority[i] == index) {
priorityIndex = next++;
}
newPriority[next++] = priority[i] >= index ? priority[i] + 1 : priority[i];
}
newPriority[priorityIndex] = index;
priority = newPriority;
if (items.length == 1) {
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
} else {
updateFolder(REDRAW_TABS);
}
}
void destroyItem (CTabItem item) {
if (inDispose) return;
int index = indexOf(item);
if (index == -1) return;
if (items.length == 1) {
items = new CTabItem[0];
priority = new int[0];
firstIndex = -1;
selectedIndex = -1;
Control control = item.control;
if (control != null && !control.isDisposed()) {
control.setVisible(false);
}
setToolTipText(null);
GC gc = new GC(this);
setButtonBounds(gc);
gc.dispose();
redraw();
return;
}
CTabItem[] newItems = new CTabItem [items.length - 1];
System.arraycopy(items, 0, newItems, 0, index);
System.arraycopy(items, index + 1, newItems, index, items.length - index - 1);
items = newItems;
int[] newPriority = new int[priority.length - 1];
int next = 0;
for (int i = 0; i < priority.length; i++) {
if (priority [i] == index) continue;
newPriority[next++] = priority[i] > index ? priority[i] - 1 : priority [i];
}
priority = newPriority;
// move the selection if this item is selected
if (selectedIndex == index) {
Control control = item.getControl();
selectedIndex = -1;
int nextSelection = mru ? priority[0] : Math.max(0, index - 1);
setSelection(nextSelection, true);
if (control != null && !control.isDisposed()) {
control.setVisible(false);
}
} else if (selectedIndex > index) {
selectedIndex --;
}
updateFolder(UPDATE_TAB_HEIGHT | REDRAW_TABS);
}
/**
* Returns true if the receiver's border is visible.
*
* @return the receiver's border visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public boolean getBorderVisible() {
checkWidget();
return borderVisible;
}
ToolBar getChevron() {
if (chevronTb == null) {
chevronTb = new ToolBar(this, SWT.FLAT);
initAccessibleChevronTb();
addTabControl(chevronTb, SWT.TRAIL, -1, false);
}
if (chevronItem == null) {
chevronItem = new ToolItem(chevronTb, SWT.PUSH);
chevronItem.setToolTipText(SWT.getMessage("SWT_ShowList"));
chevronItem.addListener(SWT.Selection, listener);
}
return chevronTb;
}
/**
* Returns true if the chevron button
* is visible when necessary.
*
* @return the visibility of the chevron button
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
*/
/*public*/ boolean getChevronVisible() {
checkWidget();
return chevronVisible;
}
@Override
public Rectangle getClientArea() {
checkWidget();
//TODO: HACK - find a better way to get padding
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BODY, SWT.FILL, 0, 0, 0, 0);
Point size = getSize();
int wrapHeight = getWrappedHeight(size);
if (onBottom) {
trim.height += wrapHeight;
} else {
trim.y -= wrapHeight;
trim.height += wrapHeight;
}
if (minimized) return new Rectangle(-trim.x, -trim.y, 0, 0);
int width = size.x - trim.width;
int height = size.y - trim.height;
return new Rectangle(-trim.x, -trim.y, width, height);
}
/**
* Return the tab that is located at the specified index.
*
* @param index the index of the tab item
* @return the item at the specified index
*
* @exception IllegalArgumentException
* - ERROR_INVALID_RANGE - if the index is out of range
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public CTabItem getItem (int index) {
//checkWidget();
if (index < 0 || index >= items.length)
SWT.error(SWT.ERROR_INVALID_RANGE);
return items [index];
}
/**
* Gets the item at a point in the widget.
*
* @param pt the point in coordinates relative to the CTabFolder
* @return the item at a point or null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public CTabItem getItem (Point pt) {
//checkWidget();
if (items.length == 0) return null;
runUpdate();
Point size = getSize();
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BORDER, SWT.NONE, 0, 0, 0, 0);
if (size.x <= trim.width) return null;
for (int i = 0; i < priority.length; i++) {
CTabItem item = items[priority[i]];
Rectangle rect = item.getBounds();
if (rect.contains(pt)) return item;
}
return null;
}
/**
* Return the number of tabs in the folder.
*
* @return the number of tabs in the folder
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public int getItemCount(){
//checkWidget();
return items.length;
}
/**
* Return the tab items.
*
* @return the tab items
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public CTabItem [] getItems() {
//checkWidget();
CTabItem[] tabItems = new CTabItem [items.length];
System.arraycopy(items, 0, tabItems, 0, items.length);
return tabItems;
}
int getLeftItemEdge (GC gc, int part){
Rectangle trim = renderer.computeTrim(part, SWT.NONE, 0, 0, 0, 0);
int x = -trim.x;
int width = 0;
for (int i = 0; i < controls.length; i++) {
if ((controlAlignments[i] & SWT.LEAD) != 0 && !controls[i].isDisposed() && controls[i].getVisible()) {
width += controls[i].computeSize(SWT.DEFAULT, SWT.DEFAULT).x;
}
}
if (width != 0) width += SPACING * 2;
x += width;
return Math.max(0, x);
}
/*
* Return the lowercase of the first non-'&' character following
* an '&' character in the given string. If there are no '&'
* characters in the given string, return '\0'.
*/
char _findMnemonic (String string) {
if (string == null) return '\0';
int index = 0;
int length = string.length ();
do {
while (index < length && string.charAt (index) != '&') index++;
if (++index >= length) return '\0';
if (string.charAt (index) != '&') return Character.toLowerCase (string.charAt (index));
index++;
} while (index < length);
return '\0';
}
String stripMnemonic (String string) {
int index = 0;
int length = string.length ();
do {
while ((index < length) && (string.charAt (index) != '&')) index++;
if (++index >= length) return string;
if (string.charAt (index) != '&') {
return string.substring(0, index-1) + string.substring(index, length);
}
index++;
} while (index < length);
return string;
}
/**
* Returns true if the receiver is minimized.
*
* @return the receiver's minimized state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public boolean getMinimized() {
checkWidget();
return minimized;
}
/**
* Returns true if the minimize button
* is visible.
*
* @return the visibility of the minimized button
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public boolean getMinimizeVisible() {
checkWidget();
return showMin;
}
/**
* Returns the number of characters that will
* appear in a fully compressed tab.
*
* @return number of characters that will appear in a fully compressed tab
*
* @since 3.0
*/
public int getMinimumCharacters() {
checkWidget();
return minChars;
}
/**
* Returns true if the receiver is maximized.
*
*
* @return the receiver's maximized state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public boolean getMaximized() {
checkWidget();
return maximized;
}
/**
* Returns true if the maximize button
* is visible.
*
* @return the visibility of the maximized button
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public boolean getMaximizeVisible() {
checkWidget();
return showMax;
}
/**
* Returns true if the receiver displays most
* recently used tabs and false otherwise.
*
* When there is not enough horizontal space to show all the tabs,
* by default, tabs are shown sequentially from left to right in
* order of their index. When the MRU visibility is turned on,
* the tabs that are visible will be the tabs most recently selected.
* Tabs will still maintain their left to right order based on index
* but only the most recently selected tabs are visible.
*
* For example, consider a CTabFolder that contains "Tab 1", "Tab 2",
* "Tab 3" and "Tab 4" (in order by index). The user selects
* "Tab 1" and then "Tab 3". If the CTabFolder is now
* compressed so that only two tabs are visible, by default,
* "Tab 2" and "Tab 3" will be shown ("Tab 3" since it is currently
* selected and "Tab 2" because it is the previous item in index order).
* If MRU visibility is enabled, the two visible tabs will be "Tab 1"
* and "Tab 3" (in that order from left to right).
*
* @return the receiver's header's visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public boolean getMRUVisible() {
checkWidget();
return mru;
}
/**
* Returns the receiver's renderer.
*
* @return the receiver's renderer
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @see #setRenderer(CTabFolderRenderer)
* @see CTabFolderRenderer
*
* @since 3.6
*/
public CTabFolderRenderer getRenderer() {
checkWidget();
return renderer;
}
int getRightItemEdge (GC gc){
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BORDER, SWT.NONE, 0, 0, 0, 0);
int x = getSize().x - (trim.width + trim.x);
int width = 0;
for (int i = 0; i < controls.length; i++) {
int align = controlAlignments[i];
if ((align & SWT.WRAP) == 0 && (align & SWT.LEAD) == 0 && !controls[i].isDisposed() && controls[i].getVisible()) {
Point rightSize = controls[i].computeSize(SWT.DEFAULT, SWT.DEFAULT);
width += rightSize.x;
}
}
if (width != 0) width += SPACING * 2;
x -= width;
return Math.max(0, x);
}
/**
* Return the selected tab item, or null if there is no selection.
*
* @return the selected tab item, or null if none has been selected
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public CTabItem getSelection() {
//checkWidget();
if (selectedIndex == -1) return null;
return items[selectedIndex];
}
/**
* Returns the receiver's selection background color.
*
* @return the selection background color of the receiver
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public Color getSelectionBackground() {
checkWidget();
return selectionBackground;
}
/**
* Returns the receiver's selection foreground color.
*
* @return the selection foreground color of the receiver
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public Color getSelectionForeground() {
checkWidget();
return selectionForeground;
}
/**
* Return the index of the selected tab item, or -1 if there
* is no selection.
*
* @return the index of the selected tab item or -1
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public int getSelectionIndex() {
//checkWidget();
return selectedIndex;
}
/**
* Returns true if the CTabFolder is rendered
* with a simple, traditional shape.
*
* @return true if the CTabFolder is rendered with a simple shape
*
* @since 3.0
*/
public boolean getSimple() {
checkWidget();
return simple;
}
/**
* Returns true if the CTabFolder only displays the selected tab
* and false if the CTabFolder displays multiple tabs.
*
* @return true if the CTabFolder only displays the selected tab and false if the CTabFolder displays multiple tabs
*
* @since 3.0
*/
public boolean getSingle() {
checkWidget();
return single;
}
@Override
public int getStyle() {
int style = super.getStyle();
style &= ~(SWT.TOP | SWT.BOTTOM);
style |= onBottom ? SWT.BOTTOM : SWT.TOP;
style &= ~(SWT.SINGLE | SWT.MULTI);
style |= single ? SWT.SINGLE : SWT.MULTI;
if (borderVisible) style |= SWT.BORDER;
style &= ~SWT.CLOSE;
if (showClose) style |= SWT.CLOSE;
return style;
}
/**
* Returns the height of the tab
*
* @return the height of the tab
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public int getTabHeight(){
checkWidget();
if (fixedTabHeight != SWT.DEFAULT) return fixedTabHeight;
return tabHeight - 1; // -1 for line drawn across top of tab //TODO: replace w/ computeTrim of tab area?
}
/**
* Returns the position of the tab. Possible values are SWT.TOP or SWT.BOTTOM.
*
* @return the position of the tab
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public int getTabPosition(){
checkWidget();
return onBottom ? SWT.BOTTOM : SWT.TOP;
}
/**
* Returns the control in the top right corner of the tab folder.
* Typically this is a close button or a composite with a menu and close button.
*
* @return the control in the top right corner of the tab folder or null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @since 2.1
*/
public Control getTopRight() {
checkWidget();
return topRight;
}
/**
* Returns the alignment of the top right control.
*
* @return the alignment of the top right control which is either
* SWT.RIGHT or SWT.FILL
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @since 3.6
*/
public int getTopRightAlignment() {
checkWidget();
return topRightAlignment;
}
/**
* Returns true if the close button appears
* when the user hovers over an unselected tabs.
*
* @return true if the close button appears on unselected tabs
*
* @since 3.0
*/
public boolean getUnselectedCloseVisible() {
checkWidget();
return showUnselectedClose;
}
/**
* Returns true if an image appears
* in unselected tabs.
*
* @return true if an image appears in unselected tabs
*
* @since 3.0
*/
public boolean getUnselectedImageVisible() {
checkWidget();
return showUnselectedImage;
}
/**
* Return the index of the specified tab or -1 if the tab is not
* in the receiver.
*
* @param item the tab item for which the index is required
*
* @return the index of the specified tab item or -1
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public int indexOf(CTabItem item) {
checkWidget();
if (item == null) {
SWT.error(SWT.ERROR_NULL_ARGUMENT);
}
for (int i = 0; i < items.length; i++) {
if (items[i] == item) return i;
}
return -1;
}
void initAccessible() {
final Accessible accessible = getAccessible();
accessible.addAccessibleListener(new AccessibleAdapter() {
@Override
public void getName(AccessibleEvent e) {
CTabItem item = null;
int childID = e.childID;
if (childID == ACC.CHILDID_SELF) {
if (selectedIndex != -1) {
item = items[selectedIndex];
}
} else if (childID >= 0 && childID < items.length) {
item = items[childID];
}
e.result = item == null ? null : stripMnemonic(item.getText());
}
@Override
public void getHelp(AccessibleEvent e) {
String help = null;
int childID = e.childID;
if (childID == ACC.CHILDID_SELF) {
help = getToolTipText();
} else if (childID >= 0 && childID < items.length) {
help = items[childID].getToolTipText();
}
e.result = help;
}
@Override
public void getKeyboardShortcut(AccessibleEvent e) {
String shortcut = null;
int childID = e.childID;
if (childID >= 0 && childID < items.length) {
String text = items[childID].getText();
if (text != null) {
char mnemonic = _findMnemonic(text);
if (mnemonic != '\0') {
shortcut = SWT.getMessage ("SWT_Page_Mnemonic", new Object[] {new Character(mnemonic)}); //$NON-NLS-1$
}
}
}
if (childID == ACC.CHILDID_SELF) {
shortcut = SWT.getMessage ("SWT_SwitchPage_Shortcut"); //$NON-NLS-1$
}
e.result = shortcut;
}
});
accessible.addAccessibleControlListener(new AccessibleControlAdapter() {
@Override
public void getChildAtPoint(AccessibleControlEvent e) {
Point testPoint = toControl(e.x, e.y);
int childID = ACC.CHILDID_NONE;
for (int i = 0; i < items.length; i++) {
if (items[i].getBounds().contains(testPoint)) {
childID = i;
break;
}
}
if (childID == ACC.CHILDID_NONE) {
Rectangle location = getBounds();
location.x = location.y = 0;
location.height = location.height - getClientArea().height;
if (location.contains(testPoint)) {
childID = ACC.CHILDID_SELF;
}
}
e.childID = childID;
}
@Override
public void getLocation(AccessibleControlEvent e) {
Rectangle location = null;
Point pt = null;
int childID = e.childID;
if (childID == ACC.CHILDID_SELF) {
location = getBounds();
pt = getParent().toDisplay(location.x, location.y);
} else {
if (childID >= 0 && childID < items.length && items[childID].showing) {
location = items[childID].getBounds();
}
if (location != null) {
pt = toDisplay(location.x, location.y);
}
}
if (location != null && pt != null) {
e.x = pt.x;
e.y = pt.y;
e.width = location.width;
e.height = location.height;
}
}
@Override
public void getChildCount(AccessibleControlEvent e) {
e.detail = items.length;
}
@Override
public void getDefaultAction(AccessibleControlEvent e) {
String action = null;
int childID = e.childID;
if (childID >= 0 && childID < items.length) {
action = SWT.getMessage ("SWT_Switch"); //$NON-NLS-1$
}
e.result = action;
}
@Override
public void getFocus(AccessibleControlEvent e) {
int childID = ACC.CHILDID_NONE;
if (isFocusControl()) {
if (selectedIndex == -1) {
childID = ACC.CHILDID_SELF;
} else {
childID = selectedIndex;
}
}
e.childID = childID;
}
@Override
public void getRole(AccessibleControlEvent e) {
int role = 0;
int childID = e.childID;
if (childID == ACC.CHILDID_SELF) {
role = ACC.ROLE_TABFOLDER;
} else if (childID >= 0 && childID < items.length) {
role = ACC.ROLE_TABITEM;
}
e.detail = role;
}
@Override
public void getSelection(AccessibleControlEvent e) {
e.childID = (selectedIndex == -1) ? ACC.CHILDID_NONE : selectedIndex;
}
@Override
public void getState(AccessibleControlEvent e) {
int state = 0;
int childID = e.childID;
if (childID == ACC.CHILDID_SELF) {
state = ACC.STATE_NORMAL;
} else if (childID >= 0 && childID < items.length) {
state = ACC.STATE_SELECTABLE;
if (isFocusControl()) {
state |= ACC.STATE_FOCUSABLE;
}
if (selectedIndex == childID) {
state |= ACC.STATE_SELECTED;
if (isFocusControl()) {
state |= ACC.STATE_FOCUSED;
}
}
}
e.detail = state;
}
@Override
public void getChildren(AccessibleControlEvent e) {
int childIdCount = items.length;
Object[] children = new Object[childIdCount];
for (int i = 0; i < childIdCount; i++) {
children[i] = Integer.valueOf(i);
}
e.children = children;
}
});
addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
if (isFocusControl()) {
if (selectedIndex == -1) {
accessible.setFocus(ACC.CHILDID_SELF);
} else {
accessible.setFocus(selectedIndex);
}
}
}
});
addListener(SWT.FocusIn, new Listener() {
@Override
public void handleEvent(Event event) {
if (selectedIndex == -1) {
accessible.setFocus(ACC.CHILDID_SELF);
} else {
accessible.setFocus(selectedIndex);
}
}
});
}
void initAccessibleMinMaxTb() {
minMaxTb.getAccessible().addAccessibleListener(new AccessibleAdapter() {
@Override
public void getName(AccessibleEvent e) {
if (e.childID != ACC.CHILDID_SELF) {
if (minItem != null && e.childID == minMaxTb.indexOf(minItem)) {
e.result = minItem.getToolTipText();
} else if (maxItem != null && e.childID == minMaxTb.indexOf(maxItem)) {
e.result = maxItem.getToolTipText();
}
}
}
});
}
void initAccessibleChevronTb() {
chevronTb.getAccessible().addAccessibleListener(new AccessibleAdapter() {
@Override
public void getName(AccessibleEvent e) {
if (e.childID != ACC.CHILDID_SELF) {
if (chevronItem != null && e.childID == chevronTb.indexOf(chevronItem)) {
e.result = chevronItem.getToolTipText();
}
}
}
});
}
void onKeyDown (Event event) {
runUpdate();
switch (event.keyCode) {
case SWT.ARROW_LEFT:
case SWT.ARROW_RIGHT:
int count = items.length;
if (count == 0) return;
if (selectedIndex == -1) return;
int leadKey = (getStyle() & SWT.RIGHT_TO_LEFT) != 0 ? SWT.ARROW_RIGHT : SWT.ARROW_LEFT;
int offset = event.keyCode == leadKey ? -1 : 1;
int index;
if (!mru) {
index = selectedIndex + offset;
} else {
int[] visible = new int[items.length];
int idx = 0;
int current = -1;
for (int i = 0; i < items.length; i++) {
if (items[i].showing) {
if (i == selectedIndex) current = idx;
visible [idx++] = i;
}
}
if (current + offset >= 0 && current + offset < idx){
index = visible [current + offset];
} else {
if (showChevron) {
Rectangle chevronRect = chevronItem.getBounds();
chevronRect = event.display.map(chevronTb, this, chevronRect);
CTabFolderEvent e = new CTabFolderEvent(this);
e.widget = this;
e.time = event.time;
e.x = chevronRect.x;
e.y = chevronRect.y;
e.width = chevronRect.width;
e.height = chevronRect.height;
e.doit = true;
for (int i = 0; i < folderListeners.length; i++) {
folderListeners[i].showList(e);
}
if (e.doit && !isDisposed()) {
showList(chevronRect);
}
}
return;
}
}
if (index < 0 || index >= count) return;
setSelection (index, true);
forceFocus();
}
}
void onDispose(Event event) {
removeListener(SWT.Dispose, listener);
notifyListeners(SWT.Dispose, event);
event.type = SWT.None;
/*
* Usually when an item is disposed, destroyItem will change the size of the items array,
* reset the bounds of all the tabs and manage the widget associated with the tab.
* Since the whole folder is being disposed, this is not necessary. For speed
* the inDispose flag is used to skip over this part of the item dispose.
*/
inDispose = true;
if (showMenu != null && !showMenu.isDisposed()) {
showMenu.dispose();
showMenu = null;
}
int length = items.length;
for (int i = 0; i < length; i++) {
if (items[i] != null) {
items[i].dispose();
}
}
gradientColors = null;
selectionGradientColors = null;
selectionGradientPercents = null;
selectionBgImage = null;
selectionBackground = null;
selectionForeground = null;
if (controlBkImages != null) {
for (int i = 0; i < controlBkImages.length; i++) {
if (controlBkImages[i] != null) {
controlBkImages[i].dispose();
controlBkImages[i] = null;
}
}
controlBkImages = null;
}
controls = null;
controlAlignments = null;
controlRects = null;
if (maxImage != null) maxImage.dispose();
maxImage = null;
if (minImage != null) minImage.dispose();
minImage = null;
if (chevronImage != null) chevronImage.dispose();
chevronImage = null;
if (renderer != null) renderer.dispose();
renderer = null;
minItem = null;
maxItem = null;
minMaxTb = null;
chevronItem = null;
chevronTb = null;
if (folderListeners.length != 0) folderListeners = new CTabFolder2Listener[0];
if (tabListeners.length != 0) tabListeners = new CTabFolderListener[0];
}
void onDragDetect(Event event) {
boolean consume = false;
for (int i = 0; i < items.length; i++) {
if (items[i].closeRect.contains(event.x, event.y)) {
consume = true;
break;
}
}
if (consume) {
event.type = SWT.None;
}
}
void onFocus(Event event) {
checkWidget();
if (selectedIndex >= 0) {
redraw();
} else {
setSelection(0, true);
}
}
boolean onMnemonic (Event event, boolean doit) {
char key = event.character;
for (int i = 0; i < items.length; i++) {
if (items[i] != null) {
char mnemonic = _findMnemonic (items[i].getText ());
if (mnemonic != '\0') {
if (Character.toLowerCase (key) == mnemonic) {
if (doit) {
setSelection(i, true);
forceFocus();
}
return true;
}
}
}
}
return false;
}
void onMenuDetect(Event event) {
if (event.detail == SWT.MENU_KEYBOARD) {
if (selectedIndex != -1) {
CTabItem item = items[selectedIndex];
Rectangle rect = getDisplay().map(this, null, item.getBounds());
if (!rect.contains(event.x, event.y)) {
/* If the mouse is not in the currently-selected tab,
* then pop up the menu near the top-right corner of the current tab.
*/
Rectangle itemTrim = renderer.computeTrim(selectedIndex, SWT.NONE, 0, 0, 0, 0);
Rectangle closeTrim = renderer.computeTrim(CTabFolderRenderer.PART_CLOSE_BUTTON, SWT.NONE, 0, 0, 0, 0);
event.x = rect.x + rect.width - item.closeRect.width + itemTrim.x - closeTrim.width;
event.y = rect.y - itemTrim.y - closeTrim.y;
}
}
}
}
void onMouseDoubleClick(Event event) {
if (event.button != 1 ||
(event.stateMask & SWT.BUTTON2) != 0 ||
(event.stateMask & SWT.BUTTON3) != 0) return;
Event e = new Event();
e.item = getItem(new Point(event.x, event.y));
if (e.item != null) {
notifyListeners(SWT.DefaultSelection, e);
}
}
void onMouse(Event event) {
if( isDisposed() ) {
return;
}
int x = event.x, y = event.y;
switch (event.type) {
case SWT.MouseEnter: {
setToolTipText(null);
break;
}
case SWT.MouseExit: {
for (int i=0; i= 0 && current + offset < idx){
index = visible [current + offset];
} else {
if (showChevron) {
Rectangle chevronRect = chevronItem.getBounds();
chevronRect = event.display.map(chevronTb, this, chevronRect);
CTabFolderEvent e = new CTabFolderEvent(this);
e.widget = this;
e.time = event.time;
e.x = chevronRect.x;
e.y = chevronRect.y;
e.width = chevronRect.width;
e.height = chevronRect.height;
e.doit = true;
for (int i = 0; i < folderListeners.length; i++) {
folderListeners[i].showList(e);
}
if (e.doit && !isDisposed()) {
showList(chevronRect);
}
}
}
}
}
setSelection (index, true);
}
void onPaint(Event event) {
if (inDispose) return;
Font font = getFont();
if (oldFont == null || !oldFont.equals(font)) {
// handle case where default font changes
oldFont = font;
if (!updateTabHeight(false)) {
updateItems();
redraw();
return;
}
}
GC gc = event.gc;
Font gcFont = gc.getFont();
Color gcBackground = gc.getBackground();
Color gcForeground = gc.getForeground();
// Useful for debugging paint problems
//{
//Point size = getSize();
//gc.setBackground(getDisplay().getSystemColor(SWT.COLOR_GREEN));
//gc.fillRectangle(-10, -10, size.x + 20, size.y+20);
//}
Point size = getSize();
Rectangle bodyRect = new Rectangle(0, 0, size.x, size.y);
renderer.draw(CTabFolderRenderer.PART_BODY, SWT.BACKGROUND | SWT.FOREGROUND, bodyRect, gc);
gc.setFont(gcFont);
gc.setForeground(gcForeground);
gc.setBackground(gcBackground);
renderer.draw(CTabFolderRenderer.PART_HEADER, SWT.BACKGROUND | SWT.FOREGROUND, bodyRect, gc);
gc.setFont(gcFont);
gc.setForeground(gcForeground);
gc.setBackground(gcBackground);
if (!single) {
for (int i=0; i < items.length; i++) {
Rectangle itemBounds = items[i].getBounds();
if (i != selectedIndex && event.getBounds().intersects(itemBounds)) {
renderer.draw(i, SWT.BACKGROUND | SWT.FOREGROUND | items[i].state , itemBounds, gc);
}
}
}
gc.setFont(gcFont);
gc.setForeground(gcForeground);
gc.setBackground(gcBackground);
if (selectedIndex != -1) {
renderer.draw(selectedIndex, items[selectedIndex].state | SWT.BACKGROUND | SWT.FOREGROUND, items[selectedIndex].getBounds(), gc);
}
gc.setFont(gcFont);
gc.setForeground(gcForeground);
gc.setBackground(gcBackground);
if (hoverTb) {
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BORDER, SWT.NONE, 0, 0, 0, 0);
int x = getSize().x - (trim.width + trim.x);
hoverRect = new Rectangle(x - 16 - SPACING, 2, 16, getTabHeight() - 2);
gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW));
x = hoverRect.x;
int y = hoverRect.y;
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WHITE));
gc.fillRectangle(x + hoverRect.width - 6, y, 5, 5);
gc.drawRectangle(x + hoverRect.width - 6, y, 5, 5);
gc.drawLine(x + hoverRect.width - 6, y+2, x + hoverRect.width - 6 + 5, y + 2);
gc.fillRectangle(x, y, 5 , 2);
gc.drawRectangle(x, y, 5 , 2);
}
gc.setFont(gcFont);
gc.setForeground(gcForeground);
gc.setBackground(gcBackground);
}
void onResize(Event event) {
if (inDispose) return;
if (ignoreResize) return;
if (updateItems()) {
redrawTabs();
}
Point size = getSize();
if (oldSize == null) {
redraw();
} else {
if (onBottom && size.y != oldSize.y) {
redraw();
} else {
int x1 = Math.min(size.x, oldSize.x);
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BODY, SWT.NONE, 0, 0, 0, 0);
if (size.x != oldSize.x) x1 -= trim.width + trim.x - marginWidth + 2;
if (!simple) x1 -= 5; // rounded top right corner
int y1 = Math.min(size.y, oldSize.y);
if (size.y != oldSize.y) y1 -= trim.height + trim.y - marginHeight;
int x2 = Math.max(size.x, oldSize.x);
int y2 = Math.max(size.y, oldSize.y);
redraw(0, y1, x2, y2 - y1, false);
redraw(x1, 0, x2 - x1, y2, false);
if (hoverTb) {
redraw(hoverRect.x, hoverRect.y, hoverRect.width, hoverRect.height, false);
}
}
}
oldSize = size;
}
void onSelection(Event event) {
if (hovering) {
hovering = false;
updateItems();
}
if (event.widget == maxItem) {
CTabFolderEvent e = new CTabFolderEvent(this);
e.widget = CTabFolder.this;
e.time = event.time;
for (int i = 0; i < folderListeners.length; i++) {
if (maximized) {
folderListeners[i].restore(e);
} else {
folderListeners[i].maximize(e);
}
}
} else if (event.widget == minItem) {
CTabFolderEvent e = new CTabFolderEvent(this);
e.widget = CTabFolder.this;
e.time = event.time;
for (int i = 0; i < folderListeners.length; i++) {
if (minimized) {
folderListeners[i].restore(e);
} else {
folderListeners[i].minimize(e);
}
}
} else if (event.widget == chevronItem) {
Rectangle chevronRect = chevronItem.getBounds();
chevronRect = event.display.map(chevronTb, this, chevronRect);
CTabFolderEvent e = new CTabFolderEvent(this);
e.widget = this;
e.time = event.time;
e.x = chevronRect.x;
e.y = chevronRect.y;
e.width = chevronRect.width;
e.height = chevronRect.height;
e.doit = true;
for (int i = 0; i < folderListeners.length; i++) {
folderListeners[i].showList(e);
}
if (e.doit && !isDisposed()) {
showList(chevronRect);
}
}
}
void onTraverse (Event event) {
if (ignoreTraverse) return;
runUpdate();
switch (event.detail) {
case SWT.TRAVERSE_ESCAPE:
case SWT.TRAVERSE_RETURN:
case SWT.TRAVERSE_TAB_NEXT:
case SWT.TRAVERSE_TAB_PREVIOUS:
Control focusControl = getDisplay().getFocusControl();
if (focusControl == this) event.doit = true;
break;
case SWT.TRAVERSE_MNEMONIC:
event.doit = onMnemonic(event, false);
break;
case SWT.TRAVERSE_PAGE_NEXT:
case SWT.TRAVERSE_PAGE_PREVIOUS:
event.doit = items.length > 0;
break;
}
ignoreTraverse = true;
notifyListeners(SWT.Traverse, event);
ignoreTraverse = false;
event.type = SWT.None;
if (isDisposed()) return;
if (!event.doit) return;
switch (event.detail) {
case SWT.TRAVERSE_MNEMONIC:
onMnemonic(event, true);
event.detail = SWT.TRAVERSE_NONE;
break;
case SWT.TRAVERSE_PAGE_NEXT:
case SWT.TRAVERSE_PAGE_PREVIOUS:
onPageTraversal(event);
event.detail = SWT.TRAVERSE_NONE;
break;
}
}
void redrawTabs() {
Point size = getSize();
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BODY, SWT.NONE, 0, 0, 0, 0);
if (onBottom) {
int h = trim.height + trim.y - marginHeight;
redraw(0, size.y - h - 1, size.x, h + 1, false);
} else {
redraw(0, 0, size.x, -trim.y - marginHeight + 1, false);
}
}
/**
* Removes the listener.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @see #addCTabFolder2Listener(CTabFolder2Listener)
*
* @since 3.0
*/
public void removeCTabFolder2Listener(CTabFolder2Listener listener) {
checkWidget();
if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (folderListeners.length == 0) return;
int index = -1;
for (int i = 0; i < folderListeners.length; i++) {
if (listener == folderListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (folderListeners.length == 1) {
folderListeners = new CTabFolder2Listener[0];
return;
}
CTabFolder2Listener[] newTabListeners = new CTabFolder2Listener[folderListeners.length - 1];
System.arraycopy(folderListeners, 0, newTabListeners, 0, index);
System.arraycopy(folderListeners, index + 1, newTabListeners, index, folderListeners.length - index - 1);
folderListeners = newTabListeners;
}
/**
* Removes the listener.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @deprecated see removeCTabFolderCloseListener(CTabFolderListener)
*/
@Deprecated
public void removeCTabFolderListener(CTabFolderListener listener) {
checkWidget();
if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (tabListeners.length == 0) return;
int index = -1;
for (int i = 0; i < tabListeners.length; i++) {
if (listener == tabListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (tabListeners.length == 1) {
tabListeners = new CTabFolderListener[0];
return;
}
CTabFolderListener[] newTabListeners = new CTabFolderListener[tabListeners.length - 1];
System.arraycopy(tabListeners, 0, newTabListeners, 0, index);
System.arraycopy(tabListeners, index + 1, newTabListeners, index, tabListeners.length - index - 1);
tabListeners = newTabListeners;
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the user changes the receiver's selection.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener(SelectionListener listener) {
checkWidget();
if (listener == null) {
SWT.error(SWT.ERROR_NULL_ARGUMENT);
}
removeListener(SWT.Selection, listener);
removeListener(SWT.DefaultSelection, listener);
}
@Override
public void reskin(int flags) {
super.reskin(flags);
for (int i = 0; i < items.length; i++) {
items[i].reskin(flags);
}
}
@Override
public void setBackground (Color color) {
super.setBackground(color);
renderer.createAntialiasColors(); //TODO: need better caching strategy
updateBkImages();
redraw();
}
/**
* Specify a gradient of colors to be drawn in the background of the unselected tabs.
* For example to draw a gradient that varies from dark blue to blue and then to
* white, use the following call to setBackground:
*
* cfolder.setBackground(new Color[]{display.getSystemColor(SWT.COLOR_DARK_BLUE),
* display.getSystemColor(SWT.COLOR_BLUE),
* display.getSystemColor(SWT.COLOR_WHITE),
* display.getSystemColor(SWT.COLOR_WHITE)},
* new int[] {25, 50, 100});
*
*
* @param colors an array of Color that specifies the colors to appear in the gradient
* in order of appearance left to right. The value null clears the
* background gradient. The value null can be used inside the array of
* Color to specify the background color.
* @param percents an array of integers between 0 and 100 specifying the percent of the width
* of the widget at which the color should change. The size of the percents
* array must be one less than the size of the colors array.
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @since 3.6
*/
public void setBackground(Color[] colors, int[] percents) {
setBackground(colors, percents, false);
}
/**
* Specify a gradient of colors to be drawn in the background of the unselected tab.
* For example to draw a vertical gradient that varies from dark blue to blue and then to
* white, use the following call to setBackground:
*
* cfolder.setBackground(new Color[]{display.getSystemColor(SWT.COLOR_DARK_BLUE),
* display.getSystemColor(SWT.COLOR_BLUE),
* display.getSystemColor(SWT.COLOR_WHITE),
* display.getSystemColor(SWT.COLOR_WHITE)},
* new int[] {25, 50, 100}, true);
*
*
* @param colors an array of Color that specifies the colors to appear in the gradient
* in order of appearance left to right. The value null clears the
* background gradient. The value null can be used inside the array of
* Color to specify the background color.
* @param percents an array of integers between 0 and 100 specifying the percent of the width
* of the widget at which the color should change. The size of the percents
* array must be one less than the size of the colors array.
*
* @param vertical indicate the direction of the gradient. True is vertical and false is horizontal.
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @since 3.6
*/
public void setBackground(Color[] colors, int[] percents, boolean vertical) {
checkWidget();
if (colors != null) {
if (percents == null || percents.length != colors.length - 1) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
for (int i = 0; i < percents.length; i++) {
if (percents[i] < 0 || percents[i] > 100) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
if (i > 0 && percents[i] < percents[i-1]) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
if (getDisplay().getDepth() < 15) {
// Don't use gradients on low color displays
colors = new Color[] {colors[colors.length - 1]};
percents = new int[] {};
}
}
// Are these settings the same as before?
if ((gradientColors != null) && (colors != null) &&
(gradientColors.length == colors.length)) {
boolean same = false;
for (int i = 0; i < gradientColors.length; i++) {
if (gradientColors[i] == null) {
same = colors[i] == null;
} else {
same = gradientColors[i].equals(colors[i]);
}
if (!same) break;
}
if (same) {
for (int i = 0; i < gradientPercents.length; i++) {
same = gradientPercents[i] == percents[i];
if (!same) break;
}
}
if (same && this.gradientVertical == vertical) return;
}
// Store the new settings
if (colors == null) {
gradientColors = null;
gradientPercents = null;
gradientVertical = false;
setBackground((Color)null);
} else {
gradientColors = new Color[colors.length];
for (int i = 0; i < colors.length; ++i) {
gradientColors[i] = colors[i];
}
gradientPercents = new int[percents.length];
for (int i = 0; i < percents.length; ++i) {
gradientPercents[i] = percents[i];
}
gradientVertical = vertical;
setBackground(gradientColors[gradientColors.length-1]);
}
// Refresh with the new settings
redraw();
}
@Override
public void setBackgroundImage(Image image) {
super.setBackgroundImage(image);
renderer.createAntialiasColors(); //TODO: need better caching strategy
redraw();
}
/**
* Toggle the visibility of the border
*
* @param show true if the border should be displayed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setBorderVisible(boolean show) {
checkWidget();
if (borderVisible == show) return;
this.borderVisible = show;
updateFolder(REDRAW);
}
void setButtonBounds(GC gc) {
Point size = getSize();
// max button
Display display = getDisplay();
if (showMax) {
if (minMaxTb == null) {
minMaxTb = new ToolBar(this, SWT.FLAT);
initAccessibleMinMaxTb();
addTabControl(minMaxTb, SWT.TRAIL, 0, false);
}
if (maxItem == null) {
maxItem = new ToolItem(minMaxTb, SWT.PUSH);
if (maxImage == null) {
maxImage = createButtonImage(display, CTabFolderRenderer.PART_MAX_BUTTON);
}
maxItem.setImage(maxImage);
maxItem.setToolTipText(maximized ? SWT.getMessage("SWT_Restore") : SWT.getMessage("SWT_Maximize")); //$NON-NLS-1$ //$NON-NLS-2$
maxItem.addListener(SWT.Selection, listener);
}
} else {
//might need to remove it if already there
if (maxItem != null) {
maxItem.dispose();
maxItem = null;
}
}
// min button
if (showMin) {
if (minMaxTb == null) {
minMaxTb = new ToolBar(this, SWT.FLAT);
initAccessibleMinMaxTb();
addTabControl(minMaxTb, SWT.TRAIL, 0, false);
}
if (minItem == null) {
minItem = new ToolItem(minMaxTb, SWT.PUSH, 0);
if (minImage == null) {
minImage = createButtonImage(display, CTabFolderRenderer.PART_MIN_BUTTON);
}
minItem.setImage(minImage);
minItem.setToolTipText(minimized ? SWT.getMessage("SWT_Restore") : SWT.getMessage("SWT_Minimize")); //$NON-NLS-1$ //$NON-NLS-2$
minItem.addListener(SWT.Selection, listener);
}
} else {
//might need to remove it if already there
if (minItem != null) {
minItem.dispose();
minItem = null;
}
}
if (minMaxTb != null && minMaxTb.getItemCount() == 0) {
removeTabControl(minMaxTb, false);
minMaxTb.dispose();
minMaxTb = null;
}
if (showChevron) {
int itemCount = items.length;
int count;
if (single) {
count = selectedIndex == -1 ? itemCount : itemCount - 1;
} else {
int showCount = 0;
while (showCount < priority.length && items[priority[showCount]].showing) {
showCount++;
}
count = itemCount - showCount;
}
if (count != chevronCount) {
chevronCount = count;
if (chevronImage != null) chevronImage.dispose();
chevronImage = createButtonImage(display, CTabFolderRenderer.PART_CHEVRON_BUTTON);
chevronItem.setImage(chevronImage);
}
}
boolean[][] overflow = new boolean[1][0];
Rectangle[] rects = computeControlBounds(size, overflow);
if (fixedTabHeight != SWT.DEFAULT) {
int height = fixedTabHeight;
if (!hovering) {
hoverTb = false;
Rectangle tabBounds = this.getBounds();
for (int i = 0; i < rects.length; i++) {
if (!(overflow[0][i])) {
if (rects[i].height > height) {
hoverTb = true;
break;
}
}
}
if (hoverTb) {
for (int i = 0; i < rects.length; i++) {
if (!(overflow[0][i])) {
if (rects[i].height > height) {
rects[i].x = tabBounds.width + 20;
}
}
}
}
}
}
int headerHeight = 0;
for (int i = 0; i < rects.length; i++) {
if (!overflow[0][i]) headerHeight = Math.max(rects[i].height, headerHeight);
}
boolean changed = false;
ignoreResize = true;
for (int i = 0; i < controls.length; i++) {
if (!controls[i].isDisposed()) {
if (overflow[0][i]) {
controls[i].setBounds(rects[i]);
} else {
controls[i].moveAbove(null);
controls[i].setBounds(rects[i].x, rects[i].y, rects[i].width, headerHeight);
}
}
if (!changed && !rects[i].equals(controlRects[i])) changed = true;
}
ignoreResize = false;
controlRects = rects;
if (changed || hovering) updateBkImages();
}
@Override
public boolean setFocus () {
checkWidget ();
/*
* Feature in SWT. When a new tab item is selected
* and the previous tab item had focus, removing focus
* from the previous tab item causes fixFocus() to give
* focus to the first child, which is usually one of the
* toolbars. This is unexpected.
* The fix is to try to set focus on the first tab item
* if fixFocus() is called.
*/
Control focusControl = getDisplay().getFocusControl ();
boolean fixFocus = isAncestor (focusControl);
if (fixFocus) {
CTabItem item = getSelection();
if (item != null) {
if (item.setFocus ()) return true;
}
}
return super.setFocus ();
}
/* Copy of isFocusAncestor from Control. */
boolean isAncestor (Control control) {
while (control != null && control != this && !(control instanceof Shell)) {
control = control.getParent();
}
return control == this;
}
@Override
public void setFont(Font font) {
checkWidget();
if (font != null && font.equals(getFont())) return;
super.setFont(font);
oldFont = getFont();
updateFolder(REDRAW);
}
@Override
public void setForeground (Color color) {
super.setForeground(color);
redraw();
}
/**
* Display an insert marker before or after the specified tab item.
*
* A value of null will clear the mark.
*
* @param item the item with which the mark is associated or null
*
* @param after true if the mark should be displayed after the specified item
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setInsertMark(CTabItem item, boolean after) {
checkWidget();
}
/**
* Display an insert marker before or after the specified tab item.
*
* A value of -1 will clear the mark.
*
* @param index the index of the item with which the mark is associated or -1
*
* @param after true if the mark should be displayed after the specified item
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT when the index is invalid
*
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setInsertMark(int index, boolean after) {
checkWidget();
if (index < -1 || index >= getItemCount()) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
boolean setItemLocation(GC gc) {
boolean changed = false;
if (items.length == 0) return false;
Rectangle trim = renderer.computeTrim(CTabFolderRenderer.PART_BORDER, SWT.NONE, 0, 0, 0, 0);
int borderBottom = trim.height + trim.y;
int borderTop = -trim.y;
Point size = getSize();
int y = onBottom ? Math.max(borderBottom, size.y - borderBottom - tabHeight) : borderTop;
Point closeButtonSize = renderer.computeSize(CTabFolderRenderer.PART_CLOSE_BUTTON, 0, gc, SWT.DEFAULT, SWT.DEFAULT);
int leftItemEdge = getLeftItemEdge(gc, CTabFolderRenderer.PART_BORDER);
if (single) {
int defaultX = getDisplay().getBounds().width + 10; // off screen
for (int i = 0; i < items.length; i++) {
CTabItem item = items[i];
if (i == selectedIndex) {
firstIndex = selectedIndex;
int oldX = item.x, oldY = item.y;
item.x = leftItemEdge;
item.y = y;
item.showing = true;
if (showClose || item.showClose) {
item.closeRect.x = leftItemEdge - renderer.computeTrim(i, SWT.NONE, 0, 0, 0, 0).x;
item.closeRect.y = onBottom ? size.y - borderBottom - tabHeight + (tabHeight - closeButtonSize.y)/2: borderTop + (tabHeight - closeButtonSize.y)/2;
}
if (item.x != oldX || item.y != oldY) changed = true;
} else {
item.x = defaultX;
item.showing = false;
}
}
} else {
int rightItemEdge = getRightItemEdge(gc);
int maxWidth = rightItemEdge - leftItemEdge;
int width = 0;
for (int i = 0; i < priority.length; i++) {
CTabItem item = items[priority[i]];
width += item.width;
item.showing = i == 0 ? true : item.width > 0 && width <= maxWidth;
}
int x = getLeftItemEdge(gc, CTabFolderRenderer.PART_HEADER);
int defaultX = getDisplay().getBounds().width + 10; // off screen
firstIndex = items.length - 1;
for (int i = 0; i < items.length; i++) {
CTabItem item = items[i];
if (!item.showing) {
if (item.x != defaultX) changed = true;
item.x = defaultX;
} else {
firstIndex = Math.min(firstIndex, i);
if (item.x != x || item.y != y) changed = true;
item.x = x;
item.y = y;
int state = SWT.NONE;
if (i == selectedIndex) state |= SWT.SELECTED;
Rectangle edgeTrim = renderer.computeTrim(i, state, 0, 0, 0, 0);
item.closeRect.x = item.x + item.width - (edgeTrim.width + edgeTrim.x) - closeButtonSize.x;
item.closeRect.y = onBottom ? size.y - borderBottom - tabHeight + (tabHeight - closeButtonSize.y)/2: borderTop + (tabHeight - closeButtonSize.y)/2;
x = x + item.width;
if (!simple && i == selectedIndex) x -= renderer.curveIndent; //TODO: fix next item position
}
}
}
return changed;
}
/**
* Reorder the items of the receiver.
* @param indices an array containing the new indices for all items
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the indices array is null
* - ERROR_INVALID_ARGUMENT - if the indices array is not the same length as the number of items,
* if there are duplicate indices or an index is out of range.
*
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
/*public*/ void setItemOrder (int[] indices) {
checkWidget();
if (indices == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (indices.length != items.length) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
int newSelectedIndex = -1;
boolean[] seen = new boolean[items.length];
CTabItem[] temp = new CTabItem[items.length];
for (int i=0; i 1;
if (showChevron) {
chevron.setVisible(true);
}
if (selectedIndex != -1) {
CTabItem tab = items[selectedIndex];
int width = renderer.computeSize(selectedIndex, SWT.SELECTED, gc, SWT.DEFAULT, SWT.DEFAULT).x;
width = Math.min(width, getRightItemEdge(gc) - getLeftItemEdge(gc, CTabFolderRenderer.PART_BORDER));
if (tab.height != tabHeight || tab.width != width) {
changed = true;
tab.shortenedText = null;
tab.shortenedTextWidth = 0;
tab.height = tabHeight;
tab.width = width;
tab.closeRect.width = tab.closeRect.height = 0;
if (showClose || tab.showClose) {
Point closeSize = renderer.computeSize(CTabFolderRenderer.PART_CLOSE_BUTTON, SWT.SELECTED, gc, SWT.DEFAULT, SWT.DEFAULT);
tab.closeRect.width = closeSize.x;
tab.closeRect.height = closeSize.y;
}
}
}
return changed;
}
if (items.length == 0) return changed;
int[] widths;
int tabAreaWidth = Math.max(0, getRightItemEdge(gc) - getLeftItemEdge(gc, CTabFolderRenderer.PART_BORDER));
// First, try the minimum tab size at full compression.
int minWidth = 0;
int[] minWidths = new int[items.length];
for (int i = 0; i < priority.length; i++) {
int index = priority[i];
int state = CTabFolderRenderer.MINIMUM_SIZE;
if (index == selectedIndex) state |= SWT.SELECTED;
minWidths[index] = renderer.computeSize(index, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
minWidth += minWidths[index];
if (minWidth > tabAreaWidth) break;
}
if (minWidth > tabAreaWidth) {
// full compression required and a chevron
showChevron = chevronVisible && items.length > 1;
if (showChevron) {
tabAreaWidth -= chevron.computeSize(SWT.DEFAULT, SWT.DEFAULT).x;
chevron.setVisible(true);
}
widths = minWidths;
int index = selectedIndex != -1 ? selectedIndex : 0;
if (tabAreaWidth < widths[index]) {
widths[index] = Math.max(0, tabAreaWidth);
}
} else {
int maxWidth = 0;
int[] maxWidths = new int[items.length];
for (int i = 0; i < items.length; i++) {
int state = 0;
if (i == selectedIndex) state |= SWT.SELECTED;
maxWidths[i] = renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
maxWidth += maxWidths[i];
}
if (maxWidth <= tabAreaWidth) {
// no compression required
widths = maxWidths;
} else {
// determine compression for each item
int extra = (tabAreaWidth - minWidth) / items.length;
while (true) {
int large = 0, totalWidth = 0;
for (int i = 0 ; i < items.length; i++) {
if (maxWidths[i] > minWidths[i] + extra) {
totalWidth += minWidths[i] + extra;
large++;
} else {
totalWidth += maxWidths[i];
}
}
if (totalWidth >= tabAreaWidth) {
extra--;
break;
}
if (large == 0 || tabAreaWidth - totalWidth < large) break;
extra++;
}
widths = new int[items.length];
for (int i = 0; i < items.length; i++) {
widths[i] = Math.min(maxWidths[i], minWidths[i] + extra);
}
}
}
for (int i = 0; i < items.length; i++) {
CTabItem tab = items[i];
int width = widths[i];
if (tab.height != tabHeight || tab.width != width) {
changed = true;
tab.shortenedText = null;
tab.shortenedTextWidth = 0;
tab.height = tabHeight;
tab.width = width;
tab.closeRect.width = tab.closeRect.height = 0;
if (showClose || tab.showClose) {
if (i == selectedIndex || showUnselectedClose) {
Point closeSize = renderer.computeSize(CTabFolderRenderer.PART_CLOSE_BUTTON, SWT.NONE, gc, SWT.DEFAULT, SWT.DEFAULT);
tab.closeRect.width = closeSize.x;
tab.closeRect.height = closeSize.y;
}
}
}
}
return changed;
}
/**
* Marks the receiver's maximize button as visible if the argument is true,
* and marks it invisible otherwise.
*
* @param visible the new visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setMaximizeVisible(boolean visible) {
checkWidget();
if (showMax == visible) return;
// display maximize button
showMax = visible;
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
/**
* Sets the layout which is associated with the receiver to be
* the argument which may be null.
*
* Note: No Layout can be set on this Control because it already
* manages the size and position of its children.
*
*
* @param layout the receiver's new layout or null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
@Override
public void setLayout (Layout layout) {
checkWidget();
return;
}
/**
* Sets the maximized state of the receiver.
*
* @param maximize the new maximized state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setMaximized(boolean maximize) {
checkWidget ();
if (this.maximized == maximize) return;
if (maximize && this.minimized) setMinimized(false);
this.maximized = maximize;
if (minMaxTb != null && maxItem != null) {
if (maxImage != null) maxImage.dispose();
maxImage = createButtonImage(getDisplay(), CTabFolderRenderer.PART_MAX_BUTTON);
maxItem.setImage(maxImage);
maxItem.setToolTipText(maximized ? SWT.getMessage("SWT_Restore") : SWT.getMessage("SWT_Maximize")); //$NON-NLS-1$ //$NON-NLS-2$
}
}
/**
* Marks the receiver's minimize button as visible if the argument is true,
* and marks it invisible otherwise.
*
* @param visible the new visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setMinimizeVisible(boolean visible) {
checkWidget();
if (showMin == visible) return;
// display minimize button
showMin = visible;
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
/**
* Sets the minimized state of the receiver.
*
* @param minimize the new minimized state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setMinimized(boolean minimize) {
checkWidget ();
if (this.minimized == minimize) return;
if (minimize && this.maximized) setMaximized(false);
this.minimized = minimize;
if (minMaxTb != null && minItem != null) {
if (minImage != null) minImage.dispose();
minImage = createButtonImage(getDisplay(), CTabFolderRenderer.PART_MIN_BUTTON);
minItem.setImage(minImage);
minItem.setToolTipText(minimized ? SWT.getMessage("SWT_Restore") : SWT.getMessage("SWT_Minimize")); //$NON-NLS-1$ //$NON-NLS-2$
}
}
/**
* Sets the minimum number of characters that will
* be displayed in a fully compressed tab.
*
* @param count the minimum number of characters that will be displayed in a fully compressed tab
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_RANGE - if the count is less than zero
*
*
* @since 3.0
*/
public void setMinimumCharacters(int count) {
checkWidget ();
if (count < 0) SWT.error(SWT.ERROR_INVALID_RANGE);
if (minChars == count) return;
minChars = count;
updateFolder(REDRAW_TABS);
}
/**
* When there is not enough horizontal space to show all the tabs,
* by default, tabs are shown sequentially from left to right in
* order of their index. When the MRU visibility is turned on,
* the tabs that are visible will be the tabs most recently selected.
* Tabs will still maintain their left to right order based on index
* but only the most recently selected tabs are visible.
*
* For example, consider a CTabFolder that contains "Tab 1", "Tab 2",
* "Tab 3" and "Tab 4" (in order by index). The user selects
* "Tab 1" and then "Tab 3". If the CTabFolder is now
* compressed so that only two tabs are visible, by default,
* "Tab 2" and "Tab 3" will be shown ("Tab 3" since it is currently
* selected and "Tab 2" because it is the previous item in index order).
* If MRU visibility is enabled, the two visible tabs will be "Tab 1"
* and "Tab 3" (in that order from left to right).
*
* @param show the new visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public void setMRUVisible(boolean show) {
checkWidget();
if (mru == show) return;
mru = show;
if (!mru) {
if (firstIndex == -1) return;
int idx = firstIndex;
int next = 0;
for (int i = firstIndex; i < items.length; i++) {
priority[next++] = i;
}
for (int i = 0; i < idx; i++) {
priority[next++] = i;
}
updateFolder(REDRAW_TABS);
}
}
/**
* Sets the renderer which is associated with the receiver to be
* the argument which may be null. In the case of null, the default
* renderer is used.
*
* @param renderer a new renderer
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @see CTabFolderRenderer
*
* @since 3.6
*/
public void setRenderer(CTabFolderRenderer renderer) {
checkWidget();
if (this.renderer == renderer || (useDefaultRenderer && renderer == null)) return;
if (this.renderer != null) this.renderer.dispose();
useDefaultRenderer = renderer == null;
if (useDefaultRenderer) renderer = new CTabFolderRenderer(this);
this.renderer = renderer;
updateFolder(REDRAW);
}
/**
* Set the selection to the tab at the specified item.
*
* @param item the tab item to be selected
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the item is null
*
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public void setSelection(CTabItem item) {
checkWidget();
if (item == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
int index = indexOf(item);
setSelection(index);
}
/**
* Set the selection to the tab at the specified index.
*
* @param index the index of the tab item to be selected
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setSelection(int index) {
checkWidget();
if (index < 0 || index >= items.length) return;
CTabItem selection = items[index];
if (selectedIndex == index) {
showItem(selection);
return;
}
int oldIndex = selectedIndex;
selectedIndex = index;
if (oldIndex != -1) {
items[oldIndex].closeImageState = SWT.BACKGROUND;
items[oldIndex].state &= ~SWT.SELECTED;
}
selection.closeImageState = SWT.NONE;
selection.showing = false;
selection.state |= SWT.SELECTED;
Control newControl = selection.control;
Control oldControl = null;
if (oldIndex != -1) {
oldControl = items[oldIndex].control;
}
if (newControl != oldControl) {
if (newControl != null && !newControl.isDisposed()) {
newControl.setBounds(getClientArea());
newControl.setVisible(true);
}
if (oldControl != null && !oldControl.isDisposed()) {
oldControl.setVisible(false);
}
}
showItem(selection);
redraw();
}
void setSelection(int index, boolean notify) {
int oldSelectedIndex = selectedIndex;
setSelection(index);
if (notify && selectedIndex != oldSelectedIndex && selectedIndex != -1) {
Event event = new Event();
event.item = getItem(selectedIndex);
notifyListeners(SWT.Selection, event);
}
}
/**
* Sets the receiver's selection background color to the color specified
* by the argument, or to the default system color for the control
* if the argument is null.
*
* @param color the new color (or null)
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the argument has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setSelectionBackground (Color color) {
if (inDispose) return;
checkWidget();
setSelectionHighlightGradientColor(null);
if (selectionBackground == color) return;
if (color == null) color = getDisplay().getSystemColor(SELECTION_BACKGROUND);
selectionBackground = color;
renderer.createAntialiasColors(); //TODO: need better caching strategy
if (selectedIndex > -1) redraw();
}
/**
* Specify a gradient of colours to be draw in the background of the selected tab.
* For example to draw a gradient that varies from dark blue to blue and then to
* white, use the following call to setBackground:
*
* cfolder.setBackground(new Color[]{display.getSystemColor(SWT.COLOR_DARK_BLUE),
* display.getSystemColor(SWT.COLOR_BLUE),
* display.getSystemColor(SWT.COLOR_WHITE),
* display.getSystemColor(SWT.COLOR_WHITE)},
* new int[] {25, 50, 100});
*
*
* @param colors an array of Color that specifies the colors to appear in the gradient
* in order of appearance left to right. The value null clears the
* background gradient. The value null can be used inside the array of
* Color to specify the background color.
* @param percents an array of integers between 0 and 100 specifying the percent of the width
* of the widget at which the color should change. The size of the percents array must be one
* less than the size of the colors array.
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*/
public void setSelectionBackground(Color[] colors, int[] percents) {
setSelectionBackground(colors, percents, false);
}
/**
* Specify a gradient of colours to be draw in the background of the selected tab.
* For example to draw a vertical gradient that varies from dark blue to blue and then to
* white, use the following call to setBackground:
*
* cfolder.setBackground(new Color[]{display.getSystemColor(SWT.COLOR_DARK_BLUE),
* display.getSystemColor(SWT.COLOR_BLUE),
* display.getSystemColor(SWT.COLOR_WHITE),
* display.getSystemColor(SWT.COLOR_WHITE)},
* new int[] {25, 50, 100}, true);
*
*
* @param colors an array of Color that specifies the colors to appear in the gradient
* in order of appearance left to right. The value null clears the
* background gradient. The value null can be used inside the array of
* Color to specify the background color.
* @param percents an array of integers between 0 and 100 specifying the percent of the width
* of the widget at which the color should change. The size of the percents array must be one
* less than the size of the colors array.
*
* @param vertical indicate the direction of the gradient. True is vertical and false is horizontal.
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
* @since 3.0
*/
public void setSelectionBackground(Color[] colors, int[] percents, boolean vertical) {
checkWidget();
int colorsLength;
Color highlightBeginColor = null; //null == no highlight
if (colors != null) {
//The colors array can optionally have an extra entry which describes the highlight top color
//Thus its either one or two larger than the percents array
if (percents == null ||
! ((percents.length == colors.length - 1) || (percents.length == colors.length - 2))){
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
for (int i = 0; i < percents.length; i++) {
if (percents[i] < 0 || percents[i] > 100) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
if (i > 0 && percents[i] < percents[i-1]) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
//If the colors is exactly two more than percents then last is highlight
//Keep track of *real* colorsLength (minus the highlight)
if(percents.length == colors.length - 2) {
highlightBeginColor = colors[colors.length - 1];
colorsLength = colors.length - 1;
} else {
colorsLength = colors.length;
}
if (getDisplay().getDepth() < 15) {
// Don't use gradients on low color displays
colors = new Color[] {colors[colorsLength - 1]};
colorsLength = colors.length;
percents = new int[] {};
}
} else {
colorsLength = 0;
}
// Are these settings the same as before?
if (selectionBgImage == null) {
if ((selectionGradientColors != null) && (colors != null) &&
(selectionGradientColors.length == colorsLength)) {
boolean same = false;
for (int i = 0; i < selectionGradientColors.length; i++) {
if (selectionGradientColors[i] == null) {
same = colors[i] == null;
} else {
same = selectionGradientColors[i].equals(colors[i]);
}
if (!same) break;
}
if (same) {
for (int i = 0; i < selectionGradientPercents.length; i++) {
same = selectionGradientPercents[i] == percents[i];
if (!same) break;
}
}
if (same && this.selectionGradientVertical == vertical) return;
}
} else {
selectionBgImage = null;
}
// Store the new settings
if (colors == null) {
selectionGradientColors = null;
selectionGradientPercents = null;
selectionGradientVertical = false;
setSelectionBackground((Color)null);
setSelectionHighlightGradientColor(null);
} else {
selectionGradientColors = new Color[colorsLength];
for (int i = 0; i < colorsLength; ++i) {
selectionGradientColors[i] = colors[i];
}
selectionGradientPercents = new int[percents.length];
for (int i = 0; i < percents.length; ++i) {
selectionGradientPercents[i] = percents[i];
}
selectionGradientVertical = vertical;
setSelectionBackground(selectionGradientColors[selectionGradientColors.length-1]);
setSelectionHighlightGradientColor(highlightBeginColor);
}
// Refresh with the new settings
if (selectedIndex > -1) redraw();
}
/*
* Set the color for the highlight start for selected tabs.
* Update the cache of highlight gradient colors if required.
*/
void setSelectionHighlightGradientColor(Color start) {
if (inDispose) return;
renderer.setSelectionHighlightGradientColor(start); //TODO: need better caching strategy
}
/**
* Set the image to be drawn in the background of the selected tab. Image
* is stretched or compressed to cover entire selection tab area.
*
* @param image the image to be drawn in the background
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setSelectionBackground(Image image) {
checkWidget();
setSelectionHighlightGradientColor(null);
if (image == selectionBgImage) return;
if (image != null) {
selectionGradientColors = null;
selectionGradientPercents = null;
renderer.disposeSelectionHighlightGradientColors(); //TODO: need better caching strategy
}
selectionBgImage = image;
renderer.createAntialiasColors(); //TODO: need better caching strategy
if (selectedIndex > -1) redraw();
}
/**
* Set the foreground color of the selected tab.
*
* @param color the color of the text displayed in the selected tab
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setSelectionForeground (Color color) {
checkWidget();
if (selectionForeground == color) return;
if (color == null) color = getDisplay().getSystemColor(SELECTION_FOREGROUND);
selectionForeground = color;
if (selectedIndex > -1) redraw();
}
/**
* Sets the shape that the CTabFolder will use to render itself.
*
* @param simple true if the CTabFolder should render itself in a simple, traditional style
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setSimple(boolean simple) {
checkWidget();
if (this.simple != simple) {
this.simple = simple;
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
}
/**
* Sets the number of tabs that the CTabFolder should display
*
* @param single true if only the selected tab should be displayed otherwise, multiple tabs will be shown.
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setSingle(boolean single) {
checkWidget();
if (this.single != single) {
this.single = single;
if (!single) {
for (int i = 0; i < items.length; i++) {
if (i != selectedIndex && items[i].closeImageState == SWT.NONE) {
items[i].closeImageState = SWT.BACKGROUND;
}
}
}
updateFolder(REDRAW);
}
}
int getControlY(Point size, Rectangle[] rects, int borderBottom, int borderTop, int i) {
int center = fixedTabHeight != SWT.DEFAULT ? 0 : (tabHeight - rects[i].height)/2;
return onBottom ? size.y - borderBottom - tabHeight + center : 1 + borderTop + center;
}
/**
* Specify a fixed height for the tab items. If no height is specified,
* the default height is the height of the text or the image, whichever
* is greater. Specifying a height of -1 will revert to the default height.
*
* @param height the pixel value of the height or -1
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if called with a height of less than 0
*
*/
public void setTabHeight(int height) {
checkWidget();
if (height < -1) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
fixedTabHeight = height;
updateFolder(UPDATE_TAB_HEIGHT);
}
/**
* Specify whether the tabs should appear along the top of the folder
* or along the bottom of the folder.
*
* @param position SWT.TOP for tabs along the top or SWT.BOTTOM for tabs along the bottom
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if the position value is not either SWT.TOP or SWT.BOTTOM
*
*
* @since 3.0
*/
public void setTabPosition(int position) {
checkWidget();
if (position != SWT.TOP && position != SWT.BOTTOM) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
if (onBottom != (position == SWT.BOTTOM)) {
onBottom = position == SWT.BOTTOM;
updateFolder(REDRAW);
}
}
/**
* Set the control that appears in the top right corner of the tab folder.
* Typically this is a close button or a composite with a Menu and close button.
* The topRight control is optional. Setting the top right control to null will
* remove it from the tab folder.
*
* @param control the control to be displayed in the top right corner or null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if the control is disposed, or not a child of this CTabFolder
*
*
* @since 2.1
*/
public void setTopRight(Control control) {
setTopRight(control, SWT.RIGHT);
}
/**
* Set the control that appears in the top right corner of the tab folder.
* Typically this is a close button or a composite with a Menu and close button.
* The topRight control is optional. Setting the top right control to null
* will remove it from the tab folder.
*
* The alignment parameter sets the layout of the control in the tab area.
* SWT.RIGHT will cause the control to be positioned on the far
* right of the folder and it will have its default size. SWT.FILL
* will size the control to fill all the available space to the right of the
* last tab. If there is no available space, the control will not be visible.
* SWT.RIGHT | SWT.WRAP will allow the control to wrap below the
* tabs if there is not enough available space to the right of the last tab.
*
*
* @param control the control to be displayed in the top right corner or null
* @param alignment SWT.RIGHT or SWT.FILL or SWT.RIGHT | SWT.WRAP
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if the control is disposed, or not a child of this CTabFolder
*
*
* @since 3.0
*/
public void setTopRight(Control control, int alignment) {
checkWidget();
if (alignment != SWT.RIGHT && alignment != SWT.FILL && alignment != (SWT.RIGHT | SWT.WRAP)) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
if (control != null && (control.isDisposed() || control.getParent() != this)) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
if (topRight == control && topRightAlignment == alignment) return;
if (topRight != null && !topRight.isDisposed()) removeTabControl(topRight, false);
topRight = control;
topRightAlignment = alignment;
alignment &= ~SWT.RIGHT;
if (control != null) addTabControl(control, SWT.TRAIL | alignment, -1, false);
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
/**
* Specify whether the close button appears
* when the user hovers over an unselected tabs.
*
* @param visible true makes the close button appear
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setUnselectedCloseVisible(boolean visible) {
checkWidget();
if (showUnselectedClose == visible) return;
// display close button when mouse hovers
showUnselectedClose = visible;
updateFolder(REDRAW);
}
/**
* Specify whether the image appears on unselected tabs.
*
* @param visible true makes the image appear
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.0
*/
public void setUnselectedImageVisible(boolean visible) {
checkWidget();
if (showUnselectedImage == visible) return;
// display image on unselected items
showUnselectedImage = visible;
updateFolder(REDRAW);
}
/**
* Shows the item. If the item is already showing in the receiver,
* this method simply returns. Otherwise, the items are scrolled until
* the item is visible.
*
* @param item the item to be shown
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see CTabFolder#showSelection()
*
* @since 2.0
*/
public void showItem (CTabItem item) {
checkWidget();
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int index = indexOf(item);
if (index == -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int idx = -1;
for (int i = 0; i < priority.length; i++) {
if (priority[i] == index) {
idx = i;
break;
}
}
if (mru) {
// move to front of mru order
int[] newPriority = new int[priority.length];
System.arraycopy(priority, 0, newPriority, 1, idx);
System.arraycopy(priority, idx+1, newPriority, idx+1, priority.length - idx - 1);
newPriority[0] = index;
priority = newPriority;
}
if (item.showing) return;
updateFolder(REDRAW_TABS);
}
void showList (Rectangle rect) {
if (items.length == 0 || !showChevron) return;
if (showMenu == null || showMenu.isDisposed()) {
showMenu = new Menu(getShell(), getStyle() & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT));
} else {
MenuItem[] items = showMenu.getItems();
for (int i = 0; i < items.length; i++) {
items[i].dispose();
}
}
final String id = "CTabFolder_showList_Index"; //$NON-NLS-1$
for (int i = 0; i < items.length; i++) {
CTabItem tab = items[i];
if (tab.showing) continue;
MenuItem item = new MenuItem(showMenu, SWT.NONE);
item.setText(tab.getText());
item.setImage(tab.getImage());
item.setData(id, tab);
item.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
MenuItem menuItem = (MenuItem)e.widget;
int index = indexOf((CTabItem)menuItem.getData(id));
CTabFolder.this.setSelection(index, true);
}
});
}
int x = rect.x;
int y = rect.y + rect.height;
Point location = getDisplay().map(this, null, x, y);
showMenu.setLocation(location.x, location.y);
showMenu.setVisible(true);
}
/**
* Shows the selection. If the selection is already showing in the receiver,
* this method simply returns. Otherwise, the items are scrolled until
* the selection is visible.
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see CTabFolder#showItem(CTabItem)
*
* @since 2.0
*/
public void showSelection () {
checkWidget ();
if (selectedIndex != -1) {
showItem(getSelection());
}
}
void _setToolTipText (int x, int y) {
String oldTip = getToolTipText();
String newTip = _getToolTip(x, y);
if (newTip == null || !newTip.equals(oldTip)) {
setToolTipText(newTip);
}
}
boolean updateItems() {
return updateItems(selectedIndex);
}
boolean updateItems (int showIndex) {
GC gc = new GC(this);
if (!single && !mru && showIndex != -1) {
// make sure selected item will be showing
int firstIndex = showIndex;
if (priority[0] < showIndex) {
int maxWidth = getRightItemEdge(gc) - getLeftItemEdge(gc, CTabFolderRenderer.PART_BORDER);
int width = 0;
int[] widths = new int[items.length];
for (int i = priority[0]; i <= showIndex; i++) {
int state = CTabFolderRenderer.MINIMUM_SIZE;
if (i == selectedIndex) state |= SWT.SELECTED;
widths[i] = renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
width += widths[i];
if (width > maxWidth) break;
}
if (width > maxWidth) {
width = 0;
for (int i = showIndex; i >= 0; i--) {
int state = CTabFolderRenderer.MINIMUM_SIZE;
if (i == selectedIndex) state |= SWT.SELECTED;
if (widths[i] == 0) widths[i] = renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
width += widths[i];
if (width > maxWidth) break;
firstIndex = i;
}
} else {
firstIndex = priority[0];
for (int i = showIndex + 1; i < items.length; i++) {
int state = CTabFolderRenderer.MINIMUM_SIZE;
if (i == selectedIndex) state |= SWT.SELECTED;
widths[i] = renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
width += widths[i];
if (width >= maxWidth) break;
}
if (width < maxWidth) {
for (int i = priority[0] - 1; i >= 0; i--) {
int state = CTabFolderRenderer.MINIMUM_SIZE;
if (i == selectedIndex) state |= SWT.SELECTED;
if (widths[i] == 0) widths[i] = renderer.computeSize(i, state, gc, SWT.DEFAULT, SWT.DEFAULT).x;
width += widths[i];
if (width > maxWidth) break;
firstIndex = i;
}
}
}
}
if (firstIndex != priority[0]) {
int index = 0;
// enumerate tabs from first visible to the last existing one (sorted ascending)
for (int i = firstIndex; i < items.length; i++) {
priority[index++] = i;
}
// enumerate hidden tabs on the left hand from first visible one
// in the inverse order (sorted descending) so that the originally
// first opened tab is always at the end of the list
for (int i = firstIndex - 1; i >= 0; i--) {
priority[index++] = i;
}
}
}
boolean oldShowChevron = showChevron;
boolean changed = setItemSize(gc);
changed |= setItemLocation(gc);
setButtonBounds(gc);
changed |= showChevron != oldShowChevron;
if (changed && getToolTipText() != null) {
Point pt = getDisplay().getCursorLocation();
pt = toControl(pt);
_setToolTipText(pt.x, pt.y);
}
gc.dispose();
return changed;
}
boolean updateTabHeight(boolean force){
int oldHeight = tabHeight;
GC gc = new GC(this);
tabHeight = renderer.computeSize(CTabFolderRenderer.PART_HEADER, SWT.NONE, gc, SWT.DEFAULT, SWT.DEFAULT).y;
gc.dispose();
if (fixedTabHeight == SWT.DEFAULT && controls != null && controls.length > 0) {
for (int i = 0; i < controls.length; i++) {
if ((controlAlignments[i] & SWT.WRAP) == 0 && !controls[i].isDisposed() && controls[i].getVisible()) {
int topHeight = controls[i].computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
topHeight += renderer.computeTrim(CTabFolderRenderer.PART_HEADER, SWT.NONE, 0,0,0,0).height + 1;
tabHeight = Math.max(topHeight, tabHeight);
}
}
}
if (!force && tabHeight == oldHeight) return false;
oldSize = null;
return true;
}
void updateFolder (int flags) {
updateFlags |= flags;
if (updateRun != null) return;
updateRun = new Runnable() {
@Override
public void run() {
updateRun = null;
if (isDisposed()) return;
runUpdate();
}
};
getDisplay().asyncExec(updateRun);
}
void runUpdate() {
if (updateFlags == 0) return;
int flags = updateFlags;
updateFlags = 0;
Rectangle rectBefore = getClientArea();
updateTabHeight(false);
updateItems(selectedIndex);
if ((flags & REDRAW) != 0) {
redraw();
} else if ((flags & REDRAW_TABS) != 0) {
redrawTabs();
}
Rectangle rectAfter = getClientArea();
if (!rectBefore.equals(rectAfter)) {
notifyListeners(SWT.Resize, new Event());
layout();
}
}
void updateBkImages() {
if (controls != null && controls.length > 0) {
for (int i = 0; i < controls.length; i++) {
Control control = controls[i];
if (!control.isDisposed()) {
if (hovering) {
if (control instanceof Composite) ((Composite) control).setBackgroundMode(SWT.INHERIT_NONE);
control.setBackgroundImage(null);
control.setBackground(getBackground());
} else {
if (control instanceof Composite) ((Composite) control).setBackgroundMode(SWT.INHERIT_DEFAULT);
Rectangle bounds = control.getBounds();
int tabHeight = getTabHeight();
int height = this.getSize().y;
boolean wrapped = onBottom ? bounds.y + bounds.height < height - tabHeight : bounds.y > tabHeight;
if (wrapped || gradientColors == null) {
control.setBackgroundImage(null);
control.setBackground(getBackground());
} else {
bounds.width = 10;
if (!onBottom) {
bounds.y = -bounds.y;
bounds.height -= 2*bounds.y - 1;
} else {
bounds.height += height - (bounds.y + bounds.height);
bounds.y = -1;
}
bounds.x = 0;
if (controlBkImages[i] != null) controlBkImages[i].dispose();
controlBkImages[i] = new Image(control.getDisplay(), bounds);
GC gc = new GC(controlBkImages[i]);
renderer.draw(CTabFolderRenderer.PART_BACKGROUND, 0, bounds, gc);
gc.dispose();
control.setBackground(null);
control.setBackgroundImage(controlBkImages[i]);
}
}
}
}
}
}
String _getToolTip(int x, int y) {
CTabItem item = getItem(new Point (x, y));
if (item == null) return null;
if (!item.showing) return null;
if ((showClose || item.showClose) && item.closeRect.contains(x, y)) {
return SWT.getMessage("SWT_Close"); //$NON-NLS-1$
}
return item.getToolTipText();
}
/**
* Set a control that can appear to the left or to the right of the folder tabs.
* This method can also be used instead of #setTopRight(Control). To remove a tab
* control, see#removeTabControl(Control);
*
* The flags parameter sets the layout of the control in the tab area.
* SWT.LEAD will cause the control to be positioned on the left
* of the tabs. SWT.TRAIL will cause the control to be positioned on
* the far right of the folder and it will have its default size. SWT.TRAIL
* can be combined with SWT.FILLto fill all the available space to the
* right of the last tab. SWT.WRAP can also be added to SWT.TRAIL
* only to cause a control to wrap if there is not enough space to display it in its
* entirety.
*
* @param control the control to be displayed in the top right corner or null
*
* @param flags valid combinations are:
* - SWT.LEAD
*
- SWT.TRAIL (| SWT.FILL | SWT.WRAP)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if the control is not a child of this CTabFolder
*
*/
/*public*/ void addTabControl(Control control, int flags) {
checkWidget();
addTabControl(control, flags, -1, true);
}
void addTabControl(Control control, int flags, int index, boolean update) {
switch (flags) {
case SWT.TRAIL:
case SWT.TRAIL | SWT.WRAP:
case SWT.TRAIL | SWT.FILL:
case SWT.TRAIL | SWT.FILL | SWT.WRAP:
case SWT.LEAD:
break;
default:
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
break;
}
if (control != null && control.getParent() != this) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
//check for duplicates
for (int i = 0; i < controls.length; i++) {
if (controls[i] == control) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
}
int length = controls.length;
control.addListener(SWT.Resize, listener);
//Grow all 4 arrays
Control[] newControls = new Control [length + 1];
System.arraycopy(controls, 0, newControls, 0, length);
controls = newControls;
int[] newAlignment = new int [length + 1];
System.arraycopy(controlAlignments, 0, newAlignment, 0, length);
controlAlignments = newAlignment;
Rectangle[] newRect = new Rectangle [length + 1];
System.arraycopy(controlRects, 0, newRect, 0, length);
controlRects = newRect;
Image[] newImage = new Image [length + 1];
System.arraycopy(controlBkImages, 0, newImage, 0, length);
controlBkImages = newImage;
if (index == -1) {
index = length;
if (chevronTb != null && control != chevronTb) index--;
}
System.arraycopy (controls, index, controls, index + 1, length - index);
System.arraycopy (controlAlignments, index, controlAlignments, index + 1, length - index);
System.arraycopy (controlRects, index, controlRects, index + 1, length - index);
System.arraycopy (controlBkImages, index, controlBkImages, index + 1, length - index);
controls[index] = control;
controlAlignments[index] = flags;
controlRects[index] = new Rectangle(0, 0, 0, 0);
if (update) {
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
}
/**
* Removes the control from the list of tab controls.
*
* @param control the control to be removed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* - ERROR_INVALID_ARGUMENT - if the control is not a child of this CTabFolder
*
*/
/*public*/ void removeTabControl (Control control) {
checkWidget();
removeTabControl (control, true);
}
void removeTabControl (Control control, boolean update) {
if (control != null && control.getParent() != this) {
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}
int index = -1;
for (int i = 0; i < controls.length; i++) {
if (controls[i] == control){
index = i;
break;
}
}
if (index == -1) return;
if (!control.isDisposed()) {
control.removeListener(SWT.Resize, listener);
control.setBackground (null);
control.setBackgroundImage (null);
if (control instanceof Composite) ((Composite) control).setBackgroundMode(SWT.INHERIT_NONE);
}
if (controlBkImages[index] != null && !controlBkImages[index].isDisposed()) controlBkImages[index].dispose();
if (controls.length == 1) {
controls = new Control[0];
controlAlignments = new int[0];
controlRects = new Rectangle[0];
controlBkImages = new Image[0];
} else {
Control[] newControls = new Control [controls.length - 1];
System.arraycopy(controls, 0, newControls, 0, index);
System.arraycopy(controls, index + 1, newControls, index, controls.length - index - 1);
controls = newControls;
int[] newAlignments = new int [controls.length];
System.arraycopy(controlAlignments, 0, newAlignments, 0, index);
System.arraycopy(controlAlignments, index + 1, newAlignments, index, controls.length - index);
controlAlignments = newAlignments;
Rectangle[] newRects = new Rectangle [controls.length];
System.arraycopy(controlRects, 0, newRects, 0, index);
System.arraycopy(controlRects, index + 1, newRects, index, controls.length - index);
controlRects = newRects;
Image[] newBkImages = new Image [controls.length];
System.arraycopy(controlBkImages, 0, newBkImages, 0, index);
System.arraycopy(controlBkImages, index + 1, newBkImages, index, controls.length - index);
controlBkImages = newBkImages;
}
if (update) {
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
}
int getWrappedHeight (Point size) {
boolean[][] positions = new boolean[1][];
Rectangle[] rects = computeControlBounds(size, positions);
int minY = Integer.MAX_VALUE, maxY = 0, wrapHeight = 0;
for (int i = 0; i < rects.length; i++) {
if (positions[0][i]) {
minY = Math.min(minY, rects[i].y);
maxY = Math.max(maxY, rects[i].y + rects[i].height);
wrapHeight = maxY - minY;
}
}
return wrapHeight;
}
/**
* Sets whether a chevron is shown when there are more items to be displayed.
*
* @exception IllegalArgumentException
* - ERROR_INVALID_RANGE - if the index is out of range
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS when called from the wrong thread
* - ERROR_WIDGET_DISPOSED when the widget has been disposed
*
*
*/
/*public*/ void setChevronVisible(boolean visible) {
checkWidget();
if (chevronVisible == visible) return;
chevronVisible = visible;
updateFolder(UPDATE_TAB_HEIGHT | REDRAW);
}
}
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