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Standard Widget Toolkit for GTK on ppc64le
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/*******************************************************************************
* Copyright (c) 2000, 2021 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import java.util.*;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gtk.*;
import org.eclipse.swt.internal.gtk3.*;
import org.eclipse.swt.internal.gtk4.*;
/**
* Instances of this class are selectable user interface
* objects that allow the user to enter and modify text.
* Text controls can be either single or multi-line.
* When a text control is created with a border, the
* operating system includes a platform specific inset
* around the contents of the control. When created
* without a border, an effort is made to remove the
* inset such that the preferred size of the control
* is the same size as the contents.
*
* - Styles:
* - CENTER, ICON_CANCEL, ICON_SEARCH, LEFT, MULTI, PASSWORD, SEARCH, SINGLE, RIGHT, READ_ONLY, WRAP
* - Events:
* - DefaultSelection, Modify, Verify, OrientationChange
*
*
* Note: Only one of the styles MULTI and SINGLE may be specified,
* and only one of the styles LEFT, CENTER, and RIGHT may be specified.
*
*
* Note: The styles ICON_CANCEL and ICON_SEARCH are hints used in combination with SEARCH.
* When the platform supports the hint, the text control shows these icons. When an icon
* is selected, a default selection event is sent with the detail field set to one of
* ICON_CANCEL or ICON_SEARCH. Normally, application code does not need to check the
* detail. In the case of ICON_CANCEL, the text is cleared before the default selection
* event is sent causing the application to search for an empty string.
*
*
* Note: Some text actions such as Undo are not natively supported on all platforms.
*
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see Text snippets
* @see SWT Example: ControlExample
* @see Sample code and further information
* @noextend This class is not intended to be subclassed by clients.
*/
public class Text extends Scrollable {
long bufferHandle;
long imContext;
int tabs = 8, lastEventTime = 0;
long gdkEventKey = 0;
int fixStart = -1, fixEnd = -1;
boolean doubleClick;
String message = "";
/** GTK4 only field, holds the address to the underlying GtkText widget. */
long textHandle;
static final char LTR_MARK = '\u200e';
static final char RTL_MARK = '\u200f';
int[] segments;
static final int ITER_SIZEOF = GTK.GtkTextIter_sizeof();
static final int SPACE_FOR_CURSOR = 1;
/**
* The maximum number of characters that can be entered
* into a text widget.
*
* Note that this value is platform dependent, based upon
* the native widget implementation.
*
*/
public final static int LIMIT;
/**
* The delimiter used by multi-line text widgets. When text
* is queried and from the widget, it will be delimited using
* this delimiter.
*/
public final static String DELIMITER;
/*
* These values can be different on different platforms.
* Therefore they are not initialized in the declaration
* to stop the compiler from inlining.
*/
static {
LIMIT = 0x7FFFFFFF;
DELIMITER = "\n";
}
/* Text uses non-standard CSS to set its background color, so we need
* a global variable to keep track of its background color.
*/
GdkRGBA background, foreground;
long indexMark = 0;
double cachedAdjustment, currentAdjustment;
/**
* 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 composite control which will be the parent of the new instance (cannot be null)
* @param style the style of control 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
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*
* @see SWT#SINGLE
* @see SWT#MULTI
* @see SWT#READ_ONLY
* @see SWT#WRAP
* @see SWT#LEFT
* @see SWT#RIGHT
* @see SWT#CENTER
* @see SWT#PASSWORD
* @see SWT#SEARCH
* @see SWT#ICON_SEARCH
* @see SWT#ICON_CANCEL
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Text (Composite parent, int style) {
super (parent, checkStyle (style));
if ((style & SWT.SEARCH) != 0) {
/*
* Ensure that SWT.ICON_CANCEL and ICON_SEARCH are set.
* NOTE: ICON_CANCEL has the same value as H_SCROLL and CON_SEARCH has the same value as V_SCROLL
* so it is necessary to first clear these bits to avoid a scroll bar and then reset the
* bit using the original style supplied by the programmer.
*
* NOTE2: Default GtkSearchEntry shows both "find" icon and "clear" icon.
* "find" icon can be manually removed here while "clear" icon must be removed depending on text.
* See gtk_changed.
*/
this.style |= SWT.ICON_SEARCH | SWT.ICON_CANCEL;
if (!GTK.GTK4) {
if ((style & SWT.ICON_SEARCH) == 0) {
this.style &= ~SWT.ICON_SEARCH;
GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_PRIMARY, null);
} else {
// Default GtkSearchEntry always shows inactive "find" icon
// make it active and sensitive to be consistent with other platforms
GTK.gtk_entry_set_icon_activatable(handle, GTK.GTK_ENTRY_ICON_PRIMARY, true);
GTK.gtk_entry_set_icon_sensitive(handle, GTK.GTK_ENTRY_ICON_PRIMARY, true);
}
if ((style & SWT.ICON_CANCEL) == 0) {
this.style &= ~SWT.ICON_CANCEL;
}
}
}
}
static int checkStyle (int style) {
if ((style & SWT.SEARCH) != 0) {
style |= SWT.SINGLE | SWT.BORDER;
style &= ~SWT.PASSWORD;
/*
* NOTE: ICON_CANCEL has the same value as H_SCROLL and
* ICON_SEARCH has the same value as V_SCROLL so they are
* cleared because SWT.SINGLE is set.
*/
}
if ((style & SWT.SINGLE) != 0 && (style & SWT.MULTI) != 0) {
style &= ~SWT.MULTI;
}
style = checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
if ((style & SWT.SINGLE) != 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP);
if ((style & SWT.WRAP) != 0) {
style |= SWT.MULTI;
style &= ~SWT.H_SCROLL;
}
if ((style & SWT.MULTI) != 0) style &= ~SWT.PASSWORD;
if ((style & (SWT.SINGLE | SWT.MULTI)) != 0) return style;
if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) return style | SWT.MULTI;
return style | SWT.SINGLE;
}
@Override
void createHandle (int index) {
state |= HANDLE | MENU;
if ((style & SWT.READ_ONLY) != 0) {
if (applyThemeBackground() == 1) {
state |= THEME_BACKGROUND;
}
}
fixedHandle = OS.g_object_new(display.gtk_fixed_get_type (), 0);
if (fixedHandle == 0) error(SWT.ERROR_NO_HANDLES);
if ((style & SWT.SINGLE) != 0) {
if ((style & SWT.SEARCH) != 0) {
handle = GTK.gtk_search_entry_new();
} else {
handle = GTK.gtk_entry_new();
}
if (handle == 0) error(SWT.ERROR_NO_HANDLES);
if (GTK.GTK4) {
OS.swt_fixed_add(fixedHandle, handle);
textHandle = GTK4.gtk_editable_get_delegate(handle);
if ((style & SWT.SEARCH) == 0) {
bufferHandle = GTK4.gtk_entry_get_buffer(handle);
} else {
bufferHandle = GTK4.gtk_text_get_buffer(textHandle);
}
} else {
GTK3.gtk_widget_set_has_window(fixedHandle, true);
GTK3.gtk_container_add(fixedHandle, handle);
GTK3.gtk_entry_set_width_chars(handle, 1);
}
GTK.gtk_editable_set_editable(handle, (style & SWT.READ_ONLY) == 0);
if (GTK.GTK4) {
GTK4.gtk_text_set_visibility(textHandle, (style & SWT.PASSWORD) == 0);
} else {
GTK.gtk_entry_set_visibility(handle, (style & SWT.PASSWORD) == 0);
}
/*
* We need to handle borders differently in GTK3.20+. GtkEntry without frame will have a blank background color.
* So let's set border via css and override the background in this case to be COLOR_LIST_BACKGROUND.
*/
if ((style & SWT.BORDER) == 0) {
GTK.gtk_entry_set_has_frame(handle, false);
long context = GTK.gtk_widget_get_style_context(handle);
String background = display.gtk_rgba_to_css_string(display.COLOR_LIST_BACKGROUND_RGBA);
gtk_css_provider_load_from_css(context, "entry {border: solid; background: " + background + ";}");
if (!GTK.GTK4) GTK3.gtk_style_context_invalidate(context);
}
float alignment = 0.0f;
if ((style & SWT.CENTER) != 0) alignment = 0.5f;
if ((style & SWT.RIGHT) != 0) alignment = 1.0f;
if (alignment > 0.0f) {
GTK.gtk_entry_set_alignment(handle, alignment);
}
if (DISABLE_EMOJI && GTK.GTK_VERSION >= OS.VERSION(3, 22, 20)) {
GTK.gtk_entry_set_input_hints(handle, GTK.GTK_INPUT_HINT_NO_EMOJI);
}
} else {
if (GTK.GTK4) {
scrolledHandle = GTK4.gtk_scrolled_window_new();
} else {
scrolledHandle = GTK3.gtk_scrolled_window_new(0, 0);
}
if (scrolledHandle == 0) error(SWT.ERROR_NO_HANDLES);
handle = GTK.gtk_text_view_new();
if (handle == 0) error(SWT.ERROR_NO_HANDLES);
bufferHandle = GTK.gtk_text_view_get_buffer(handle);
if (bufferHandle == 0) error(SWT.ERROR_NO_HANDLES);
if (GTK.GTK4) {
OS.swt_fixed_add(fixedHandle, scrolledHandle);
GTK4.gtk_scrolled_window_set_child(scrolledHandle, handle);
} else {
GTK3.gtk_container_add(fixedHandle, scrolledHandle);
GTK3.gtk_container_add(scrolledHandle, handle);
}
GTK.gtk_text_view_set_editable(handle, (style & SWT.READ_ONLY) == 0);
if ((style & SWT.WRAP) != 0) GTK.gtk_text_view_set_wrap_mode(handle, GTK.GTK_WRAP_WORD_CHAR);
int hsp = (style & SWT.H_SCROLL) != 0 ? GTK.GTK_POLICY_ALWAYS : GTK.GTK_POLICY_NEVER;
int vsp = (style & SWT.V_SCROLL) != 0 ? GTK.GTK_POLICY_ALWAYS : GTK.GTK_POLICY_NEVER;
GTK.gtk_scrolled_window_set_policy(scrolledHandle, hsp, vsp);
if ((style & SWT.BORDER) != 0) {
if (GTK.GTK4) {
GTK4.gtk_scrolled_window_set_has_frame(scrolledHandle, true);
} else {
GTK3.gtk_scrolled_window_set_shadow_type(scrolledHandle, GTK.GTK_SHADOW_ETCHED_IN);
}
}
int justification = GTK.GTK_JUSTIFY_LEFT;
if ((style & SWT.CENTER) != 0) justification = GTK.GTK_JUSTIFY_CENTER;
if ((style & SWT.RIGHT) != 0) justification = GTK.GTK_JUSTIFY_RIGHT;
GTK.gtk_text_view_set_justification(handle, justification);
}
imContext = OS.imContextLast();
// In GTK 3 font description is inherited from parent widget which is not how SWT has always worked,
// reset to default font to get the usual behavior
setFontDescription(defaultFont().handle);
}
@Override
int applyThemeBackground () {
return (backgroundAlpha == 0 || (style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) ? 1 : 0;
}
@Override
void createWidget (int index) {
super.createWidget (index);
doubleClick = true;
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver's text is modified, by sending
* it one of the messages defined in the ModifyListener
* interface.
*
* @param listener the listener which should 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 ModifyListener
* @see #removeModifyListener
*/
public void addModifyListener (ModifyListener listener) {
addTypedListener(listener, SWT.Modify);
}
/**
* Adds a segment listener.
*
* A SegmentEvent is sent whenever text content is being modified or
* a segment listener is added or removed. You can
* customize the appearance of text by indicating certain characters to be inserted
* at certain text offsets. This may be used for bidi purposes, e.g. when
* adjacent segments of right-to-left text should not be reordered relative to
* each other.
* E.g., multiple Java string literals in a right-to-left language
* should generally remain in logical order to each other, that is, the
* way they are stored.
*
*
* Warning: This API is currently only implemented on Windows and GTK.
* SegmentEvents won't be sent on Cocoa.
*
*
* @param listener the listener which should 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 SegmentEvent
* @see SegmentListener
* @see #removeSegmentListener
*
* @since 3.8
*/
public void addSegmentListener (SegmentListener listener) {
addTypedListener(listener, SWT.Segments);
clearSegments (true);
applySegments ();
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control is selected by the user, by sending
* it one of the messages defined in the SelectionListener
* interface.
*
* widgetSelected is not called for texts.
* widgetDefaultSelected is typically called when ENTER is pressed in a single-line text,
* or when ENTER is pressed in a search text. If the receiver has the SWT.SEARCH | SWT.ICON_CANCEL style
* and the user cancels the search, the event object detail field contains the value SWT.ICON_CANCEL.
* Likewise, if the receiver has the SWT.ICON_SEARCH style and the icon search is selected, the
* event object detail field contains the value SWT.ICON_SEARCH.
*
*
* @param listener the listener which should be notified when the control is selected by the user
*
* @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) {
addTypedListener(listener, SWT.Selection, SWT.DefaultSelection);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver's text is verified, by sending
* it one of the messages defined in the VerifyListener
* interface.
*
* @param listener the listener which should 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 VerifyListener
* @see #removeVerifyListener
*/
public void addVerifyListener (VerifyListener listener) {
addTypedListener(listener, SWT.Verify);
}
/**
* Appends a string.
*
* The new text is appended to the text at
* the end of the widget.
*
*
* @param string the string to be appended
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string 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
*
*/
public void append (String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
byte [] buffer = Converter.wcsToMbcs (string, false);
clearSegments (true);
if ((style & SWT.SINGLE) != 0) {
GTK.gtk_editable_insert_text (handle, buffer, buffer.length, new int[]{-1});
GTK.gtk_editable_set_position (handle, -1);
} else {
byte [] position = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_end_iter (bufferHandle, position);
GTK.gtk_text_buffer_insert (bufferHandle, position, buffer, buffer.length);
GTK.gtk_text_buffer_place_cursor (bufferHandle, position);
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
}
applySegments ();
}
void applySegments () {
/*
* It is possible (but unlikely), that application code could have
* disposed the widget in the modify event. If this happens, return to
* cancel the operation.
*/
if (isDisposed() || (!hooks (SWT.Segments) && !filters (SWT.Segments))) return;
Event event = new Event ();
String string = getText ();
event.text = string;
event.segments = segments;
sendEvent (SWT.Segments, event);
segments = event.segments;
if (segments == null) return;
int nSegments = segments.length;
if (nSegments == 0) return;
for (int i = 1, length = string == null ? 0 : string.length (); i < nSegments; i++) {
if (event.segments [i] < event.segments [i - 1] || event.segments [i] > length) {
error (SWT.ERROR_INVALID_ARGUMENT);
}
}
char[] segmentsChars = event.segmentsChars;
char [] separator = { getOrientation () == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK };
if ((style & SWT.SINGLE) != 0) {
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
int limit = GTK.gtk_entry_get_max_length (handle);
if (limit != 0) GTK.gtk_entry_set_max_length (handle, translateOffset (limit));
int [] pos = new int [1];
for (int i = 0; i < nSegments; i++) {
pos [0] = segments [i] + i;
if (segmentsChars != null && segmentsChars.length > i) {
separator [0] = segmentsChars [i];
}
byte [] buffer = Converter.wcsToMbcs (separator, false);
long ptr;
if (GTK.GTK4) {
ptr = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
ptr = GTK3.gtk_entry_get_text(handle);
}
pos [0] = (int)OS.g_utf16_offset_to_utf8_offset (ptr, pos [0]);
GTK.gtk_editable_insert_text (handle, buffer, buffer.length, pos);
}
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
} else {
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
byte [] pos = new byte [ITER_SIZEOF];
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
for (int i = 0; i < nSegments; i++) {
GTK.gtk_text_buffer_get_bounds (bufferHandle, startIter, endIter);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, pos, (int)OS.g_utf16_offset_to_utf8_offset (ptr, segments[i] + i));
OS.g_free (ptr);
if (segmentsChars != null && segmentsChars.length > i) {
separator [0] = segmentsChars [i];
}
byte [] buffer = Converter.wcsToMbcs (separator, false);
GTK.gtk_text_buffer_insert (bufferHandle, pos, buffer, buffer.length);
}
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
}
}
void clearSegments (boolean applyText) {
if (segments == null) return;
int nSegments = segments.length;
if (nSegments == 0) return;
if ((style & SWT.SINGLE) != 0) {
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
if (applyText) {
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
long ptr;
if (GTK.GTK4) {
ptr = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
ptr = GTK3.gtk_entry_get_text(handle);
}
int start, end;
for (int i = 0; i < nSegments; i++) {
start = (int)OS.g_utf16_offset_to_utf8_offset (ptr, segments[i]);
end = (int)OS.g_utf16_offset_to_utf8_offset (ptr, segments[i] + 1);
GTK.gtk_editable_delete_text (handle, start, end);
}
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
}
int limit = GTK.gtk_entry_get_max_length (handle);
if (limit != 0) GTK.gtk_entry_set_max_length (handle, untranslateOffset (limit));
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
} else if (applyText) {
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
byte [] start = new byte [ITER_SIZEOF], end = new byte [ITER_SIZEOF];
byte [] startIter = new byte [ITER_SIZEOF], endIter = new byte [ITER_SIZEOF];
for (int i = 0; i < nSegments; i++) {
GTK.gtk_text_buffer_get_bounds (bufferHandle, startIter, endIter);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, start, (int)OS.g_utf16_offset_to_utf8_offset (ptr, segments[i]));
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, end, (int)OS.g_utf16_offset_to_utf8_offset (ptr, segments[i] + 1));
GTK.gtk_text_buffer_delete (bufferHandle, start, end);
OS.g_free (ptr);
}
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
}
segments = null;
}
/**
* Clears the selection.
*
* @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 clearSelection () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
int position = GTK.gtk_editable_get_position (handle);
GTK.gtk_editable_select_region (handle, position, position);
} else {
byte [] position = new byte [ITER_SIZEOF];
long insertMark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, insertMark);
GTK.gtk_text_buffer_select_range(bufferHandle, position, position);
}
}
@Override
Point computeSizeInPixels (int wHint, int hHint, boolean changed) {
checkWidget ();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
int[] w = new int[1], h = new int[1];
if ((style & SWT.SINGLE) != 0) {
long layout;
if (GTK.GTK4) {
long context = GTK.gtk_widget_get_pango_context(handle);
layout = OS.pango_layout_new(context);
} else {
GTK.gtk_widget_realize(handle);
layout = GTK3.gtk_entry_get_layout(handle);
}
OS.pango_layout_get_pixel_size(layout, w, h);
} else {
byte [] start = new byte [ITER_SIZEOF], end = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_bounds (bufferHandle, start, end);
long text = GTK.gtk_text_buffer_get_text (bufferHandle, start, end, true);
long layout = GTK.gtk_widget_create_pango_layout (handle, text);
OS.g_free (text);
OS.pango_layout_set_width (layout, wHint * OS.PANGO_SCALE);
OS.pango_layout_get_pixel_size (layout, w, h);
OS.g_object_unref (layout);
}
int width = w [0];
int height = h [0];
if ((style & SWT.SINGLE) != 0 && message.length () > 0) {
byte [] buffer = Converter.wcsToMbcs (message, true);
long layout = GTK.gtk_widget_create_pango_layout (handle, buffer);
Arrays.fill (buffer, (byte) 0);
OS.pango_layout_get_pixel_size (layout, w, h);
OS.g_object_unref (layout);
width = Math.max (width, w [0]);
}
if ((style & SWT.SEARCH) != 0) {
// GtkSearchEntry have more padding than GtkEntry
GtkBorder tmp = new GtkBorder();
long context = GTK.gtk_widget_get_style_context (handle);
int state_flag = GTK.gtk_widget_get_state_flags(handle);
gtk_style_context_get_padding(context, state_flag, tmp);
width += tmp.left + tmp.right;
}
if (width == 0) width = DEFAULT_WIDTH;
if (height == 0) height = DEFAULT_HEIGHT;
width = wHint == SWT.DEFAULT ? width : wHint;
height = hHint == SWT.DEFAULT ? height : hHint;
Rectangle trim = computeTrimInPixels (0, 0, width, height);
return new Point (trim.width, trim.height);
}
@Override
Rectangle computeTrimInPixels (int x, int y, int width, int height) {
checkWidget ();
Rectangle trim = super.computeTrimInPixels (x, y, width, height);
int xborder = 0, yborder = 0;
if ((style & SWT.SINGLE) != 0) {
GtkBorder tmp = new GtkBorder();
long context = GTK.gtk_widget_get_style_context (handle);
int state_flag = GTK.gtk_widget_get_state_flags(handle);
gtk_style_context_get_padding(context, state_flag, tmp);
trim.x -= tmp.left;
trim.y -= tmp.top;
trim.width += tmp.left + tmp.right;
if (tmp.bottom == 0 && tmp.top == 0) {
Point widthNative = computeNativeSize(handle, trim.width, SWT.DEFAULT, true);
trim.height = widthNative.y;
} else {
trim.height += tmp.top + tmp.bottom;
}
if ((style & SWT.BORDER) != 0) {
int state = GTK.gtk_widget_get_state_flags(handle);
gtk_style_context_get_border(context, state, tmp);
trim.x -= tmp.left;
trim.y -= tmp.top;
trim.width += tmp.left + tmp.right;
trim.height += tmp.top + tmp.bottom;
}
if (!GTK.GTK4 || ((style & SWT.SEARCH) == 0) ) {
GdkRectangle icon_area = new GdkRectangle();
GTK.gtk_entry_get_icon_area(handle, GTK.GTK_ENTRY_ICON_PRIMARY, icon_area);
trim.x -= icon_area.width;
trim.width += icon_area.width;
GTK.gtk_entry_get_icon_area(handle, GTK.GTK_ENTRY_ICON_SECONDARY, icon_area);
trim.width += icon_area.width;
}
} else {
int borderWidth = gtk_container_get_border_width_or_margin (handle);
xborder += borderWidth;
yborder += borderWidth;
}
/*
* Focus line width is done via CSS in GTK4, and does not contribute
* to the size of the widget.
*/
if (!GTK.GTK4) {
int [] property = new int [1];
GTK3.gtk_widget_style_get (handle, OS.interior_focus, property, 0);
if (property [0] == 0) {
GTK3.gtk_widget_style_get (handle, OS.focus_line_width, property, 0);
xborder += property [0];
yborder += property [0];
}
}
trim.x -= xborder;
trim.y -= yborder;
trim.width += 2 * xborder;
trim.height += 2 * yborder;
trim.width += SPACE_FOR_CURSOR;
return new Rectangle (trim.x, trim.y, trim.width, trim.height);
}
/**
* Copies the selected text.
*
* The current selection is copied to the clipboard.
*
*
* @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 copy () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
GTK4.gtk_widget_activate_action(textHandle, OS.action_copy_clipboard, null);
} else {
GTK3.gtk_editable_copy_clipboard(handle);
}
} else {
long clipboard = GTK.GTK4 ? GTK4.gtk_widget_get_clipboard(handle) : GTK3.gtk_clipboard_get(GDK.GDK_NONE);
clearSegments (true);
GTK.gtk_text_buffer_copy_clipboard (bufferHandle, clipboard);
applySegments ();
}
}
/**
* Cuts the selected text.
*
* The current selection is first copied to the
* clipboard and then deleted from the widget.
*
*
* @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 cut () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
GTK4.gtk_widget_activate_action(textHandle, OS.action_cut_clipboard, null);
} else {
GTK3.gtk_editable_cut_clipboard(handle);
}
} else {
long clipboard = GTK.GTK4 ? GTK4.gtk_widget_get_clipboard(handle) : GTK3.gtk_clipboard_get(GDK.GDK_NONE);
clearSegments (true);
GTK.gtk_text_buffer_cut_clipboard (bufferHandle, clipboard, GTK.gtk_text_view_get_editable (handle));
applySegments ();
}
}
char [] deprocessText (char [] text, int start, int end) {
if (text == null) return new char [0];
if (start < 0) start = 0;
int length = text.length;
if (end == -1) end = start + length;
if (segments != null && end > segments [0]) {
int nSegments = segments.length;
if (nSegments > 0 && start <= segments [nSegments - 1]) {
int nLeadSegments = 0;
while (start - nLeadSegments > segments [nLeadSegments]) nLeadSegments++;
int segmentCount = nLeadSegments;
for (int i = start; i < end; i++) {
if (segmentCount < nSegments && i - segmentCount == segments [segmentCount]) {
++segmentCount;
} else {
text [i - segmentCount + nLeadSegments - start] = text [i - start];
}
}
length = end - start - segmentCount + nLeadSegments;
}
}
if (start != 0 || end != start + length) {
char [] newText = new char [length];
System.arraycopy(text, 0, newText, 0, length);
return newText;
}
return text;
}
@Override
GdkRGBA defaultBackground () {
return display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).handle;
}
@Override
void deregister () {
super.deregister ();
if (bufferHandle != 0) display.removeWidget (bufferHandle);
if (imContext != 0) display.removeWidget (imContext);
}
@Override
boolean dragDetect (int x, int y, boolean filter, boolean dragOnTimeout, boolean [] consume) {
return false;
}
@Override
long eventWindow () {
if ((style & SWT.SINGLE) != 0) {
/*
* Single-line Text (GtkEntry in GTK) uses a GDK_INPUT_ONLY
* internal window. This window can't be used for any kind
* of painting, but this is the window to which functions
* like Control.setCursor() should apply.
*/
long window = super.paintWindow ();
long children = GDK.gdk_window_get_children (window);
if (children != 0) {
long childrenIterator = children;
/*
* When search or cancel icons are added to Text, those
* icon window(s) are added to the beginning of the list.
* In order to always return the correct window for Text,
* browse to the end of the list.
*/
do {
window = OS.g_list_data (childrenIterator);
} while ((childrenIterator = OS.g_list_next (childrenIterator)) != 0);
}
OS.g_list_free (children);
return window;
} else {
return paintWindow ();
}
}
@Override
boolean filterKey (long event) {
int time = GDK.gdk_event_get_time (event);
if (time != lastEventTime) {
lastEventTime = time;
if (imContext != 0) {
if (GTK.GTK4)
return GTK4.gtk_im_context_filter_keypress (imContext, event);
else
return GTK3.gtk_im_context_filter_keypress (imContext, event);
}
}
gdkEventKey = event;
return false;
}
void fixIM () {
/*
* The IM filter has to be called one time for each key press event.
* When the IM is open the key events are duplicated. The first event
* is filtered by SWT and the second event is filtered by GTK. In some
* cases the GTK handler does not run (the widget is destroyed, the
* application code consumes the event, etc), for these cases the IM
* filter has to be called by SWT.
*/
if (gdkEventKey != 0 && gdkEventKey != -1) {
if (imContext != 0) {
if (GTK.GTK4)
GTK4.gtk_im_context_filter_keypress (imContext, gdkEventKey);
else
GTK3.gtk_im_context_filter_keypress (imContext, gdkEventKey);
gdkEventKey = -1;
return;
}
}
gdkEventKey = 0;
}
@Override
int getBorderWidthInPixels () {
checkWidget();
if ((style & SWT.MULTI) != 0) return super.getBorderWidthInPixels ();
if ((this.style & SWT.BORDER) != 0) {
return getThickness (handle).x;
}
return 0;
}
/**
* Returns the line number of the caret.
*
* The line number of the caret is returned.
*
*
* @return the line number
*
* @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 int getCaretLineNumber () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return 0;
byte [] position = new byte [ITER_SIZEOF];
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, mark);
return GTK.gtk_text_iter_get_line (position);
}
/**
* Returns a point describing the location of the caret relative
* to the receiver.
*
* @return a point, the location of the caret
*
* @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 Point getCaretLocation () {
checkWidget ();
return DPIUtil.autoScaleDown(getCaretLocationInPixels());
}
Point getCaretLocationInPixels () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
int index = GTK.gtk_editable_get_position (handle);
index = GTK3.gtk_entry_text_index_to_layout_index (handle, index);
int [] offset_x = new int [1], offset_y = new int [1];
GTK3.gtk_entry_get_layout_offsets (handle, offset_x, offset_y);
long layout = GTK3.gtk_entry_get_layout (handle);
PangoRectangle pos = new PangoRectangle ();
OS.pango_layout_index_to_pos (layout, index, pos);
int x = offset_x [0] + OS.PANGO_PIXELS (pos.x) - getBorderWidthInPixels ();
int y = offset_y [0] + OS.PANGO_PIXELS (pos.y);
return new Point (x, y);
} else {
byte[] position = new byte[ITER_SIZEOF];
long mark = GTK.gtk_text_buffer_get_insert(bufferHandle);
GTK.gtk_text_buffer_get_iter_at_mark(bufferHandle, position, mark);
GdkRectangle rect = new GdkRectangle();
GTK.gtk_text_view_get_iter_location(handle, position, rect);
int[] x = new int[1];
int[] y = new int[1];
GTK.gtk_text_view_buffer_to_window_coords(handle, GTK.GTK_TEXT_WINDOW_TEXT, rect.x, rect.y, x, y);
return new Point (x[0], y[0]);
}
}
/**
* Returns the character position of the caret.
*
* Indexing is zero based.
*
*
* @return the position of the caret
*
* @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 int getCaretPosition () {
checkWidget ();
int result;
if ((style & SWT.SINGLE) != 0) {
long ptr = GTK3.gtk_entry_get_text (handle);
result = (int)OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_editable_get_position (handle));
} else {
byte [] position = new byte [ITER_SIZEOF];
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, mark);
byte [] zero = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, zero, position, true);
result = (int)OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_text_iter_get_offset (position));
OS.g_free (ptr);
}
return untranslateOffset (result);
}
/**
* Returns the number of characters.
*
* @return number of characters in the widget
*
* @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 int getCharCount () {
checkWidget ();
int result;
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
result = GTK4.gtk_entry_get_text_length(handle);
} else {
long str = GTK3.gtk_entry_get_text(handle);
result = (int)OS.g_utf16_strlen(str, -1);
}
} else {
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_bounds (bufferHandle, startIter, endIter);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true);
result = (int)OS.g_utf16_strlen(ptr, -1);
OS.g_free (ptr);
}
return untranslateOffset (result);
}
/**
* Returns the double click enabled flag.
*
* The double click flag enables or disables the
* default action of the text widget when the user
* double clicks.
*
*
* @return whether or not double click is enabled
*
* @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 getDoubleClickEnabled () {
checkWidget ();
return doubleClick;
}
/**
* Returns the echo character.
*
* The echo character is the character that is
* displayed when the user enters text or the
* text is changed by the programmer.
*
*
* @return the echo character
*
* @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 #setEchoChar
*/
public char getEchoChar () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
if (!GTK.gtk_entry_get_visibility (handle)) {
return GTK.gtk_entry_get_invisible_char (handle);
}
}
return '\0';
}
/**
* Returns the editable state.
*
* @return whether or not the receiver is editable
*
* @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 getEditable () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
return GTK.gtk_editable_get_editable (handle);
}
return GTK.gtk_text_view_get_editable (handle);
}
/**
* Returns the number of lines.
*
* @return the number of lines in the widget
*
* @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 int getLineCount () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return 1;
return GTK.gtk_text_buffer_get_line_count (bufferHandle);
}
/**
* Returns the line delimiter.
*
* @return a string that is the line delimiter
*
* @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 #DELIMITER
*/
public String getLineDelimiter () {
checkWidget ();
return "\n";
}
/**
* Returns the height of a line.
*
* @return the height of a row of text
*
* @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 int getLineHeight () {
checkWidget ();
long fontDesc = getFontDescription ();
int result = fontHeight (fontDesc, handle);
OS.pango_font_description_free (fontDesc);
return result;
}
/**
* Returns the widget message. The message text is displayed
* as a hint for the user, indicating the purpose of the field.
*
* Typically this is used in conjunction with SWT.SEARCH.
*
*
* @return the widget message
*
* @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 3.3
*/
public String getMessage () {
checkWidget ();
return message;
}
/**
* Returns the orientation of the receiver, which will be one of the
* constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT.
*
* @return the orientation 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 2.1.2
*/
@Override
public int getOrientation () {
return super.getOrientation ();
}
/*public*/ int getPosition (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
int position = -1;
if ((style & SWT.SINGLE) != 0) {
int [] index = new int [1];
int [] trailing = new int [1];
long layout = GTK3.gtk_entry_get_layout (handle);
OS.pango_layout_xy_to_index (layout, point.x * OS.PANGO_SCALE, point.y * OS.PANGO_SCALE, index, trailing);
long ptr = OS.pango_layout_get_text (layout);
position = (int)OS.g_utf16_pointer_to_offset (ptr, ptr + index[0]) + trailing[0];
} else {
byte [] p = new byte [ITER_SIZEOF];
GTK.gtk_text_view_get_iter_at_location (handle, p, point.x, point.y);
byte [] zero = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, zero, p, true);
position = (int)OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_text_iter_get_offset (p));
OS.g_free (ptr);
}
return untranslateOffset (position);
}
/**
* Returns a Point whose x coordinate is the
* character position representing the start of the selected
* text, and whose y coordinate is the character position
* representing the end of the selection. An "empty" selection
* is indicated by the x and y coordinates having the same value.
*
* Indexing is zero based. The range of a selection is from
* 0..N where N is the number of characters in the widget.
*
*
* @return a point representing the selection start and end
*
* @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 Point getSelection() {
checkWidget();
Point selection;
if ((style & SWT.SINGLE) != 0) {
int[] start = new int[1];
int[] end = new int[1];
GTK.gtk_editable_get_selection_bounds(handle, start, end);
long str;
if (GTK.GTK4) {
str = GTK.gtk_entry_buffer_get_text(GTK4.gtk_entry_get_buffer(handle));
} else {
str = GTK3.gtk_entry_get_text(handle);
}
start[0] = (int)OS.g_utf8_offset_to_utf16_offset(str, start[0]);
end[0] = (int)OS.g_utf8_offset_to_utf16_offset(str, end[0]);
selection = new Point(start[0], end[0]);
} else {
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_selection_bounds (bufferHandle, startIter, endIter);
byte [] zero = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, zero, endIter, true);
int start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_text_iter_get_offset (startIter));
int end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_text_iter_get_offset (endIter));
OS.g_free (ptr);
selection = new Point (start, end);
}
selection.x = untranslateOffset(selection.x);
selection.y = untranslateOffset(selection.y);
return selection;
}
/**
* Returns the number of selected characters.
*
* @return the number of selected characters.
*
* @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 int getSelectionCount () {
checkWidget ();
Point selection = getSelection ();
return Math.abs (selection.y - selection.x);
}
/**
* Gets the selected text, or an empty string if there is no current selection.
*
* @return the selected text
*
* @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 String getSelectionText() {
checkWidget();
Point selection = getSelection();
return getText().substring(selection.x, selection.y);
}
/**
* Returns the number of tabs.
*
* Tab stop spacing is specified in terms of the
* space (' ') character. The width of a single
* tab stop is the pixel width of the spaces.
*
*
* @return the number of tab characters
*
* @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 int getTabs () {
checkWidget ();
return tabs;
}
int getTabWidth (int tabs) {
byte[] buffer = Converter.wcsToMbcs(" ", true);
long layout = GTK.gtk_widget_create_pango_layout (handle, buffer);
int [] width = new int [1];
int [] height = new int [1];
OS.pango_layout_get_size (layout, width, height);
OS.g_object_unref (layout);
return width [0] * tabs;
}
/**
* Returns the widget text.
*
* The text for a text widget is the characters in the widget, or
* an empty string if this has never been set.
*
*
* @return the widget text
*
* @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 String getText () {
return new String (getTextChars());
}
/**
* Returns a range of text. Returns an empty string if the
* start of the range is greater than the end.
*
* Indexing is zero based. The range of
* a selection is from 0..N-1 where N is
* the number of characters in the widget.
*
*
* @param start the start of the range
* @param end the end of the range
* @return the range of text
*
* @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 String getText (int start, int end) {
checkWidget ();
if (!(start <= end && 0 <= end)) return "";
String str = getText ();
int length = str.length ();
end = Math.min (end, length - 1);
if (start > end) return "";
start = Math.max (0, start);
/*
* NOTE: The current implementation uses substring ()
* which can reference a potentially large character
* array.
*/
return str.substring (start, end + 1);
}
/**
* Returns the widget's text as a character array.
*
* The text for a text widget is the characters in the widget, or
* a zero-length array if this has never been set.
*
*
* Note: Use this API to prevent the text from being written into a String
* object whose lifecycle is outside of your control. This can help protect
* the text, for example, when the widget is used as a password field.
* However, the text can't be protected if an {@link SWT#Segments} or
* {@link SWT#Verify} listener has been added to the widget.
*
*
* @return a character array that contains the widget's text
*
* @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 #setTextChars(char[])
*
* @since 3.7
*/
public char [] getTextChars () {
checkWidget ();
long address;
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
address = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
address = GTK3.gtk_entry_get_text(handle);
}
} else {
byte [] start = new byte [ITER_SIZEOF];
byte [] end = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_bounds (bufferHandle, start, end);
address = GTK.gtk_text_buffer_get_text (bufferHandle, start, end, true);
}
if (address == 0) return new char[0];
int length = C.strlen (address);
byte [] buffer = new byte [length];
C.memmove (buffer, address, length);
if ((style & SWT.MULTI) != 0) OS.g_free (address);
char [] result = Converter.mbcsToWcs (buffer);
Arrays.fill (buffer, (byte) 0);
if (segments != null) {
result = deprocessText (result, 0, -1);
}
return result;
}
/**
* Returns the maximum number of characters that the receiver is capable of holding.
*
* If this has not been changed by setTextLimit(),
* it will be the constant Text.LIMIT.
*
*
* @return the text limit
*
* @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 #LIMIT
*/
public int getTextLimit () {
checkWidget ();
if ((style & SWT.MULTI) != 0) return LIMIT;
int limit = GTK.gtk_entry_get_max_length (handle);
return limit == 0 ? 0xFFFF : untranslateOffset (limit);
}
/**
* Returns the zero-relative index of the line which is currently
* at the top of the receiver.
*
* This index can change when lines are scrolled or new lines are added or removed.
*
*
* @return the index of the top line
*
* @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 int getTopIndex () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return 0;
byte [] position = new byte [ITER_SIZEOF];
/*
* Feature in GTK: GtkTextView widgets are subject to line validation
* which happens during idle. This causes GtkTextIter to not update quickly
* enough when changes are added to the text buffer. The fix is to use a
* GtkTextMark to track the precise index, then convert it back to a
* GtkTextIter when getTopIndex() is called. See bug 487467.
*
* NOTE: to cover cases where getTopIndex() is called without setTopIndex()
* being called, we fetch the current GtkAdjustment value and cache it for
* comparison. In getTopIndex() we compare the current value with the cached
* one to see if the user has scrolled/moved the viewport using the GUI.
* If so, we use the old method of fetching the top index.
*/
long vAdjustment = GTK.gtk_scrollable_get_vadjustment (handle);
currentAdjustment = GTK.gtk_adjustment_get_value (vAdjustment);
if (cachedAdjustment == currentAdjustment) {
// If indexMark is 0, fetch topIndex using the old method
if (indexMark != 0) {
GTK.gtk_text_buffer_get_iter_at_mark (bufferHandle, position, indexMark);
return GTK.gtk_text_iter_get_line (position);
}
}
GdkRectangle rect = new GdkRectangle ();
GTK.gtk_text_view_get_visible_rect (handle, rect);
GTK.gtk_text_view_get_line_at_y (handle, position, rect.y, null);
return GTK.gtk_text_iter_get_line (position);
}
/**
* Returns the top SWT logical point.
*
* The top point is the SWT logical point position of the line
* that is currently at the top of the widget. On
* some platforms, a text widget can be scrolled by
* points instead of lines so that a partial line
* is displayed at the top of the widget.
*
* The top SWT logical point changes when the widget is scrolled.
* The top SWT logical point does not include the widget trimming.
*
*
* @return the SWT logical point position of the top line
*
* @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 int getTopPixel () {
checkWidget ();
return DPIUtil.autoScaleDown(getTopPixelInPixels());
}
int getTopPixelInPixels () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return 0;
byte [] position = new byte [ITER_SIZEOF];
GdkRectangle rect = new GdkRectangle ();
GTK.gtk_text_view_get_visible_rect (handle, rect);
int [] lineTop = new int[1];
GTK.gtk_text_view_get_line_at_y (handle, position, rect.y, lineTop);
return lineTop [0];
}
@Override
long gtk_activate (long widget) {
sendSelectionEvent (SWT.DefaultSelection);
return 0;
}
@Override
long gtk_button_press_event (long widget, long event) {
long result;
result = super.gtk_button_press_event (widget, event);
if (result != 0) return result;
int eventType = GDK.gdk_event_get_event_type(event);
if (!doubleClick) {
switch (eventType) {
case GDK.GDK_2BUTTON_PRESS:
case GDK.GDK_3BUTTON_PRESS:
return 1;
}
}
return result;
}
@Override
long gtk_changed (long widget) {
/*
* Feature in GTK. When the user types, GTK positions
* the caret after sending the changed signal. This
* means that application code that attempts to position
* the caret during a changed signal will fail. The fix
* is to post the modify event when the user is typing.
*/
boolean keyPress = false;
long eventPtr = GTK.GTK4 ? 0 : GTK3.gtk_get_current_event ();
if (eventPtr != 0) {
int eventType = GDK.gdk_event_get_event_type(eventPtr);
eventType = fixGdkEventTypeValues(eventType);
switch (eventType) {
case GDK.GDK_KEY_PRESS:
keyPress = true;
break;
}
gdk_event_free (eventPtr);
}
if (keyPress) {
postEvent (SWT.Modify);
} else {
sendEvent (SWT.Modify);
}
if ((style & SWT.SEARCH) != 0 && !GTK.GTK4) {
if ((style & SWT.ICON_CANCEL) == 0) {
// Default GtkSearchEntry shows "clear" icon when there is text, manually revert this
// when "cancel" icon style is not set
GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_SECONDARY, null);
}
}
return 0;
}
@Override
long gtk_commit (long imContext, long text) {
if (text == 0) return 0;
if ((style & SWT.SINGLE) != 0) {
if (!GTK.gtk_editable_get_editable (handle)) return 0;
}
int length = C.strlen (text);
if (length == 0) return 0;
byte [] buffer = new byte [length];
C.memmove (buffer, text, length);
char [] chars = Converter.mbcsToWcs (buffer);
Arrays.fill (buffer, (byte) 0);
char [] newChars = sendIMKeyEvent (SWT.KeyDown, 0, chars);
if (newChars == null) return 0;
/*
* Feature in GTK. For a GtkEntry, during the insert-text signal,
* GTK allows the programmer to change only the caret location,
* not the selection. If the programmer changes the selection,
* the new selection is lost. The fix is to detect a selection
* change and set it after the insert-text signal has completed.
*/
fixStart = fixEnd = -1;
OS.g_signal_handlers_block_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT);
int id = OS.g_signal_lookup (OS.commit, GTK.gtk_im_context_get_type ());
int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID;
OS.g_signal_handlers_unblock_matched (imContext, mask, id, 0, 0, 0, handle);
if (newChars == chars) {
OS.g_signal_emit_by_name (imContext, OS.commit, text);
} else {
buffer = Converter.wcsToMbcs (newChars, true);
OS.g_signal_emit_by_name (imContext, OS.commit, buffer);
Arrays.fill (buffer, (byte) 0);
}
OS.g_signal_handlers_unblock_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT);
OS.g_signal_handlers_block_matched (imContext, mask, id, 0, 0, 0, handle);
if ((style & SWT.SINGLE) != 0) {
if (fixStart != -1 && fixEnd != -1) {
GTK.gtk_editable_set_position (handle, fixStart);
GTK.gtk_editable_select_region (handle, fixStart, fixEnd);
}
}
fixStart = fixEnd = -1;
return 0;
}
@Override
long gtk_delete_range (long widget, long iter1, long iter2) {
if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
C.memmove (startIter, iter1, startIter.length);
C.memmove (endIter, iter2, endIter.length);
int start = GTK.gtk_text_iter_get_offset (startIter);
int end = GTK.gtk_text_iter_get_offset (endIter);
byte [] zero = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, zero, endIter, true);
start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, start);
end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, end);
OS.g_free (ptr);
String newText = verifyText ("", start, end);
if (newText == null) {
/* Remember the selection when the text was deleted */
GTK.gtk_text_buffer_get_selection_bounds (bufferHandle, startIter, endIter);
start = GTK.gtk_text_iter_get_offset (startIter);
end = GTK.gtk_text_iter_get_offset (endIter);
if (start != end) {
fixStart = start;
fixEnd = end;
}
OS.g_signal_stop_emission_by_name (bufferHandle, OS.delete_range);
} else {
if (newText.length () > 0) {
byte [] buffer = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
GTK.gtk_text_buffer_delete (bufferHandle, startIter, endIter);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
GTK.gtk_text_buffer_insert (bufferHandle, startIter, buffer, buffer.length);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
OS.g_signal_stop_emission_by_name (bufferHandle, OS.delete_range);
Arrays.fill (buffer, (byte) 0);
}
}
return 0;
}
@Override
long gtk_delete_text (long widget, long start_pos, long end_pos) {
if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
long ptr = GTK3.gtk_entry_get_text (handle);
if (end_pos == -1) end_pos = OS.g_utf8_strlen (ptr, -1);
int start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, start_pos);
int end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, end_pos);
String newText = verifyText ("", start, end);
if (newText == null) {
/* Remember the selection when the text was deleted */
int [] newStart = new int [1], newEnd = new int [1];
GTK.gtk_editable_get_selection_bounds (handle, newStart, newEnd);
if (newStart [0] != newEnd [0]) {
fixStart = newStart [0];
fixEnd = newEnd [0];
}
OS.g_signal_stop_emission_by_name (handle, OS.delete_text);
} else {
if (newText.length () > 0) {
int [] pos = new int [1];
pos [0] = (int)end_pos;
byte [] buffer = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
GTK.gtk_editable_insert_text (handle, buffer, buffer.length, pos);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
GTK.gtk_editable_set_position (handle, pos [0]);
Arrays.fill (buffer, (byte) 0);
}
}
return 0;
}
@Override
long gtk_event_after (long widget, long gdkEvent) {
if (cursor != null) setCursor (cursor.handle);
/*
* Feature in GTK. The gtk-entry-select-on-focus property is a global
* setting. Return it to its default value after the GtkEntry has done
* its focus in processing so that other widgets (such as the combo)
* use the correct value.
*/
if ((style & SWT.SINGLE) != 0 && display.entrySelectOnFocus) {
int eventType = GDK.gdk_event_get_event_type(gdkEvent);
eventType = fixGdkEventTypeValues(eventType);
switch (eventType) {
case GDK.GDK_FOCUS_CHANGE:
boolean [] focusIn = new boolean [1];
if (GTK.GTK4) {
focusIn[0] = GDK.gdk_focus_event_get_in(gdkEvent);
} else {
GdkEventFocus gdkEventFocus = new GdkEventFocus ();
GTK3.memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof);
focusIn[0] = gdkEventFocus.in != 0;
}
if (focusIn[0]) {
long settings = GTK.gtk_settings_get_default ();
OS.g_object_set (settings, GTK.gtk_entry_select_on_focus, true, 0);
}
break;
}
}
return super.gtk_event_after (widget, gdkEvent);
}
@Override
long gtk_draw (long widget, long cairo) {
if ((state & OBSCURED) != 0) return 0;
long result = super.gtk_draw (widget, cairo);
return result;
}
@Override
boolean mustBeVisibleOnInitBounds() {
// Bug 542940: Workaround to avoid NPE, make Text visible on initialization
return true;
}
@Override
long gtk_focus_out_event (long widget, long event) {
fixIM ();
return super.gtk_focus_out_event (widget, event);
}
@Override
long gtk_grab_focus (long widget) {
long result = super.gtk_grab_focus (widget);
/*
* Feature in GTK. GtkEntry widgets select their text on focus in,
* clearing the previous selection. This behavior is controlled by
* the gtk-entry-select-on-focus property. The fix is to disable
* this property when a GtkEntry is given focus and restore it after
* the entry has done focus in processing.
*/
if ((style & SWT.SINGLE) != 0 && display.entrySelectOnFocus) {
long settings = GTK.gtk_settings_get_default ();
OS.g_object_set (settings, GTK.gtk_entry_select_on_focus, false, 0);
}
return result;
}
@Override
long gtk_icon_release (long widget, long icon_pos, long event) {
Event e = new Event();
if (icon_pos == GTK.GTK_ENTRY_ICON_PRIMARY) {
e.detail = SWT.ICON_SEARCH;
} else {
e.detail = SWT.ICON_CANCEL;
}
sendSelectionEvent (SWT.DefaultSelection, e, false);
return 0;
}
@Override
long gtk_insert_text (long widget, long new_text, long new_text_length, long position) {
if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
if (new_text == 0 || new_text_length == 0) return 0;
byte [] buffer = new byte [(int)new_text_length];
C.memmove (buffer, new_text, buffer.length);
String oldText = new String (Converter.mbcsToWcs (buffer));
int [] pos = new int [1];
C.memmove (pos, position, 4);
long ptr = GTK3.gtk_entry_get_text (handle);
if (pos [0] == -1) pos [0] = (int)OS.g_utf8_strlen (ptr, -1);
/* Use the selection when the text was deleted */
int start = pos [0], end = pos [0];
if (fixStart != -1 && fixEnd != -1) {
start = pos [0] = fixStart;
end = fixEnd;
fixStart = fixEnd = -1;
}
start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, start);
end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, end);
String newText = verifyText (oldText, start, end);
if (newText != oldText && handle != 0) {
int [] newStart = new int [1], newEnd = new int [1];
GTK.gtk_editable_get_selection_bounds (handle, newStart, newEnd);
if (newText != null) {
if (newStart [0] != newEnd [0]) {
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
GTK.gtk_editable_delete_selection (handle);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
}
byte [] buffer3 = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
GTK.gtk_editable_insert_text (handle, buffer3, buffer3.length, pos);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
newStart [0] = newEnd [0] = pos [0];
}
pos [0] = newEnd [0];
if (newStart [0] != newEnd [0]) {
fixStart = newStart [0];
fixEnd = newEnd [0];
}
C.memmove (position, pos, 4);
OS.g_signal_stop_emission_by_name (handle, OS.insert_text);
}
return 0;
}
@Override
long gtk_key_press_event (long widget, long event) {
boolean handleSegments = false, segmentsCleared = false;
if (hooks (SWT.Segments) || filters (SWT.Segments)) {
int length = 0;
int [] state = new int[1];
if (GTK.GTK4) {
/* TODO: GTK4 no access to key event string */
state[0] = GDK.gdk_event_get_modifier_state(event);
} else {
GDK.gdk_event_get_state(event, state);
GdkEventKey gdkEvent = new GdkEventKey ();
GTK3.memmove(gdkEvent, event, GdkEventKey.sizeof);
length = gdkEvent.length;
}
if (length > 0 && (state[0] & (GDK.GDK_MOD1_MASK | GDK.GDK_CONTROL_MASK)) == 0) {
handleSegments = true;
if (segments != null) {
clearSegments (true);
segmentsCleared = true;
}
}
}
long result = super.gtk_key_press_event (widget, event);
if (result != 0) fixIM ();
if (gdkEventKey == -1) result = 1;
gdkEventKey = 0;
if (handleSegments && (result != 0 || segmentsCleared)) {
applySegments ();
}
return result;
}
@Override
long gtk_populate_popup (long widget, long menu) {
if ((style & SWT.RIGHT_TO_LEFT) != 0) {
GTK.gtk_widget_set_direction (menu, GTK.GTK_TEXT_DIR_RTL);
GTK3.gtk_container_forall (menu, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL);
}
return 0;
}
@Override
long gtk_text_buffer_insert_text (long widget, long iter, long text, long length) {
if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
byte [] position = new byte [ITER_SIZEOF];
C.memmove (position, iter, position.length);
/* Use the selection when the text was deleted */
int start = GTK.gtk_text_iter_get_offset (position), end = start;
if (fixStart != -1 && fixEnd != -1) {
start = fixStart;
end = fixEnd;
fixStart = fixEnd = -1;
}
byte [] zero = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset(bufferHandle, zero, 0);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, zero, position, true);
start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, start);
end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, end);
OS.g_free(ptr);
byte [] buffer = new byte [(int)length];
C.memmove (buffer, text, buffer.length);
String oldText = new String (Converter.mbcsToWcs (buffer));
String newText = verifyText (oldText, start, end);
if (newText == null) {
OS.g_signal_stop_emission_by_name (bufferHandle, OS.insert_text);
} else {
if (newText != oldText) {
byte [] buffer1 = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
GTK.gtk_text_buffer_insert (bufferHandle, iter, buffer1, buffer1.length);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
OS.g_signal_stop_emission_by_name (bufferHandle, OS.insert_text);
}
}
return 0;
}
@Override
void hookEvents() {
super.hookEvents();
if ((style & SWT.SINGLE) != 0) {
OS.g_signal_connect_closure(handle, OS.changed, display.getClosure (CHANGED), true);
OS.g_signal_connect_closure(handle, OS.insert_text, display.getClosure (INSERT_TEXT), false);
OS.g_signal_connect_closure(handle, OS.delete_text, display.getClosure (DELETE_TEXT), false);
OS.g_signal_connect_closure(handle, OS.activate, display.getClosure (ACTIVATE), false);
if (!GTK.GTK4) {
OS.g_signal_connect_closure(handle, OS.grab_focus, display.getClosure (GRAB_FOCUS), false);
}
if ((style & SWT.SEARCH) != 0 && !GTK.GTK4) {
OS.g_signal_connect_closure(handle, OS.icon_release, display.getClosure (ICON_RELEASE), false);
}
} else {
OS.g_signal_connect_closure(bufferHandle, OS.changed, display.getClosure (CHANGED), false);
OS.g_signal_connect_closure(bufferHandle, OS.insert_text, display.getClosure (TEXT_BUFFER_INSERT_TEXT), false);
OS.g_signal_connect_closure(bufferHandle, OS.delete_range, display.getClosure (DELETE_RANGE), false);
}
if (imContext != 0) {
OS.g_signal_connect_closure(imContext, OS.commit, display.getClosure (COMMIT), false);
int id = OS.g_signal_lookup(OS.commit, GTK.gtk_im_context_get_type ());
int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID;
OS.g_signal_handlers_block_matched(imContext, mask, id, 0, 0, 0, handle);
}
if (!GTK.GTK4) {
OS.g_signal_connect_closure(handle, OS.populate_popup, display.getClosure (POPULATE_POPUP), false);
}
// In GTK4, these event signals belong to GtkText which is the only child of GtkEntry
long eventHandle = 0;
if (GTK.GTK4) {
eventHandle = ((style & SWT.SINGLE) != 0) ? textHandle : handle;
} else {
eventHandle = handle;
}
OS.g_signal_connect_closure(eventHandle, OS.backspace, display.getClosure (BACKSPACE), false);
OS.g_signal_connect_closure(eventHandle, OS.backspace, display.getClosure (BACKSPACE_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.copy_clipboard, display.getClosure (COPY_CLIPBOARD), false);
OS.g_signal_connect_closure(eventHandle, OS.copy_clipboard, display.getClosure (COPY_CLIPBOARD_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.cut_clipboard, display.getClosure (CUT_CLIPBOARD), false);
OS.g_signal_connect_closure(eventHandle, OS.cut_clipboard, display.getClosure (CUT_CLIPBOARD_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.paste_clipboard, display.getClosure (PASTE_CLIPBOARD), false);
OS.g_signal_connect_closure(eventHandle, OS.paste_clipboard, display.getClosure (PASTE_CLIPBOARD_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.delete_from_cursor, display.getClosure (DELETE_FROM_CURSOR), false);
OS.g_signal_connect_closure(eventHandle, OS.delete_from_cursor, display.getClosure (DELETE_FROM_CURSOR_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.move_cursor, display.getClosure (MOVE_CURSOR), false);
OS.g_signal_connect_closure(eventHandle, OS.move_cursor, display.getClosure (MOVE_CURSOR_INVERSE), true);
OS.g_signal_connect_closure(eventHandle, OS.direction_changed, display.getClosure (DIRECTION_CHANGED), true);
}
/**
* Inserts a string.
*
* The old selection is replaced with the new text.
*
*
* @param string the string
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string 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
*
*/
public void insert (String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
clearSegments (true);
byte [] buffer = Converter.wcsToMbcs (string, false);
if ((style & SWT.SINGLE) != 0) {
int [] start = new int [1], end = new int [1];
GTK.gtk_editable_get_selection_bounds (handle, start, end);
GTK.gtk_editable_delete_selection (handle);
GTK.gtk_editable_insert_text (handle, buffer, buffer.length, start);
GTK.gtk_editable_set_position (handle, start [0]);
} else {
byte [] start = new byte [ITER_SIZEOF];
byte [] end = new byte [ITER_SIZEOF];
if (GTK.gtk_text_buffer_get_selection_bounds (bufferHandle, start, end)) {
GTK.gtk_text_buffer_delete (bufferHandle, start, end);
}
GTK.gtk_text_buffer_insert (bufferHandle, start, buffer, buffer.length);
GTK.gtk_text_buffer_place_cursor (bufferHandle, start);
scrollIfNotVisible(start, null, true);
}
applySegments ();
}
/**
* Methods that insert or select text should not modify the topIndex
* of the viewer.
*
* To avoid this issue we calculate the visible area, positions of the
* topIndex, and the insertion/selection points. If the insertion/selection points
* are outside the visible area, then scroll to them. Otherwise do nothing,
* which preserves the topIndex.
*
* @param iter the GtkTextIter representing the insertion/selection point
* @param scrollTo the GtkTextIter representing the point to be scrolled to (can be null)
* @param insert true if insertion is being performed, false if selection
*/
private void scrollIfNotVisible(byte [] iter, byte [] scrollTo, boolean insert) {
GdkRectangle rect = new GdkRectangle ();
int distanceTopIndex, numLinesVisible, lineHeight;
int[] insertionCoordinates = new int [1];
int[] topIndexCoordinates = new int [1];
byte [] indexIter = new byte [ITER_SIZEOF];
// Calculate the visible area
GTK.gtk_text_view_get_visible_rect (handle, rect);
lineHeight = getLineHeight ();
numLinesVisible = rect.height / lineHeight;
// Get the coordinates of the insertion/selection point
GTK.gtk_text_view_get_line_yrange (handle, iter, insertionCoordinates, null);
// If we have a topIndex, calculate whether the insertion/selection point
// is in the visible area
if (indexMark != 0) {
GTK.gtk_text_buffer_get_iter_at_mark (bufferHandle, indexIter, indexMark);
GTK.gtk_text_view_get_line_yrange (handle, indexIter, topIndexCoordinates, null);
distanceTopIndex = (insertionCoordinates [0] - topIndexCoordinates [0]) / lineHeight;
// If it is not in the visible area, scroll to the insertion/selection point
if (distanceTopIndex >= numLinesVisible) {
if (insert) {
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
} else if (scrollTo != null) {
GTK.gtk_text_view_scroll_to_iter (handle, scrollTo, 0, true, 0, 0);
}
}
} else {
// Set topIndex to 0 and perform visibility calculations based on that
topIndexCoordinates [0] = 0;
distanceTopIndex = (insertionCoordinates [0] - topIndexCoordinates [0]) / lineHeight;
if (distanceTopIndex >= numLinesVisible) {
if (scrollTo != null && !insert) {
GTK.gtk_text_view_scroll_to_iter (handle, scrollTo, 0, true, 0, 0);
} else if (insert) {
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
}
}
}
}
@Override
long paintWindow () {
if ((style & SWT.SINGLE) != 0) {
return super.paintWindow ();
} else {
if (GTK.GTK4) {
// TODO: this function has been removed on GTK4, check bug 561444
return 0;
} else {
GTK.gtk_widget_realize (handle);
return GTK3.gtk_text_view_get_window (handle, GTK.GTK_TEXT_WINDOW_TEXT);
}
}
}
/**
* Pastes text from clipboard.
*
* The selected text is deleted from the widget
* and new text inserted from the clipboard.
*
*
* @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 paste () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
GTK4.gtk_widget_activate_action(textHandle, OS.action_paste_clipboard, null);
} else {
GTK3.gtk_editable_paste_clipboard (handle);
}
} else {
long clipboard = GTK.GTK4 ? GTK4.gtk_widget_get_clipboard(handle) : GTK3.gtk_clipboard_get(GDK.GDK_NONE);
clearSegments (true);
GTK.gtk_text_buffer_paste_clipboard (bufferHandle, clipboard, null, GTK.gtk_text_view_get_editable (handle));
applySegments ();
}
}
@Override
void register () {
super.register ();
if (bufferHandle != 0) display.addWidget (bufferHandle, this);
if (imContext != 0) display.addWidget (imContext, this);
}
@Override
void releaseWidget () {
super.releaseWidget ();
fixIM ();
message = null;
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver's text is modified.
*
* @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 ModifyListener
* @see #addModifyListener
*/
public void removeModifyListener (ModifyListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Modify, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver's text is modified.
*
* @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 SegmentEvent
* @see SegmentListener
* @see #addSegmentListener
*
* @since 3.8
*/
public void removeSegmentListener (SegmentListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
eventTable.unhook (SWT.Segments, listener);
clearSegments (true);
applySegments ();
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is selected by the user.
*
* @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) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.Selection, listener);
eventTable.unhook(SWT.DefaultSelection,listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is verified.
*
* @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 VerifyListener
* @see #addVerifyListener
*/
public void removeVerifyListener (VerifyListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Verify, listener);
}
/**
* Selects all the text in 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
*
*/
public void selectAll () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
GTK.gtk_editable_select_region (handle, 0, -1);
} else {
byte [] start = new byte [ITER_SIZEOF];
byte [] end = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, start, 0);
GTK.gtk_text_buffer_get_end_iter (bufferHandle, end);
GTK.gtk_text_buffer_select_range(bufferHandle, start, end);
}
}
@Override
GdkRGBA getContextBackgroundGdkRGBA () {
if (background != null && (state & BACKGROUND) != 0) {
return background;
}
return defaultBackground();
}
@Override
GdkRGBA getContextColorGdkRGBA () {
if (foreground != null) {
return foreground;
} else {
return display.COLOR_WIDGET_FOREGROUND_RGBA;
}
}
@Override
void setBackgroundGdkRGBA (long context, long handle, GdkRGBA rgba) {
/* Setting the background color overrides the selected background color.
* To prevent this, we need to re-set the default. This can be done with CSS
* on GTK3.16+, or by using GtkStateFlags as an argument to
* gtk_widget_override_background_color() on versions of GTK3 less than 3.16.
*/
if (rgba == null) {
background = defaultBackground();
} else {
background = rgba;
}
GdkRGBA selectedBackground = display.getSystemColor(SWT.COLOR_LIST_SELECTION).handle;
GdkRGBA selectedForeground = display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT).handle;
String css;
String properties;
if ((style & SWT.SINGLE) != 0) {
properties = "entry {background: " + display.gtk_rgba_to_css_string(background) + ";}\n"
+ "entry:selected {background-color: " + display.gtk_rgba_to_css_string(selectedBackground) + ";}\n"
+ "entry selection {color: " + display.gtk_rgba_to_css_string(selectedForeground) + ";}";
} else {
properties = "textview text {background-color: " + display.gtk_rgba_to_css_string(background) + ";}\n"
+ "textview text:selected {background-color: " + display.gtk_rgba_to_css_string(selectedBackground) + ";}\n"
+ "textview text selection {color: " + display.gtk_rgba_to_css_string(selectedForeground) + ";}";
}
css = properties;
// Cache background color
cssBackground = css;
// Apply background color and any foreground color
String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.BACKGROUND);
gtk_css_provider_load_from_css(context, finalCss);
}
@Override
void setForegroundGdkRGBA (GdkRGBA rgba) {
foreground = rgba;
GdkRGBA toSet = rgba == null ? display.COLOR_WIDGET_FOREGROUND_RGBA : rgba;
setForegroundGdkRGBA (handle, toSet);
}
@Override
void setCursor (long cursor) {
long defaultCursor = 0;
if (cursor == 0) {
if (GTK.GTK4) {
defaultCursor = GDK.gdk_cursor_new_from_name("xterm", 0);
} else {
defaultCursor = GDK.gdk_cursor_new_from_name (GDK.gdk_display_get_default(), "xterm");
}
}
super.setCursor (cursor != 0 ? cursor : defaultCursor);
if (cursor == 0) OS.g_object_unref (defaultCursor);
}
/**
* Sets the double click enabled flag.
*
* The double click flag enables or disables the
* default action of the text widget when the user
* double clicks.
*
* Note: This operation is a hint and is not supported on
* platforms that do not have this concept.
*
*
* @param doubleClick the new double click flag
*
* @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 setDoubleClickEnabled (boolean doubleClick) {
checkWidget ();
this.doubleClick = doubleClick;
}
/**
* Sets the echo character.
*
* The echo character is the character that is
* displayed when the user enters text or the
* text is changed by the programmer. Setting
* the echo character to '\0' clears the echo
* character and redraws the original text.
* If for any reason the echo character is invalid,
* or if the platform does not allow modification
* of the echo character, the default echo character
* for the platform is used.
*
*
* @param echo the new echo character
*
* @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 setEchoChar(char echo) {
checkWidget();
if ((style & SWT.SINGLE) != 0) {
GTK.gtk_entry_set_visibility(handle, echo == '\0');
GTK.gtk_entry_set_invisible_char(handle, echo);
}
}
/**
* Sets the editable state.
*
* @param editable the new editable 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
*
*/
public void setEditable (boolean editable) {
checkWidget ();
style &= ~SWT.READ_ONLY;
if (!editable) style |= SWT.READ_ONLY;
if ((style & SWT.SINGLE) != 0) {
GTK.gtk_editable_set_editable (handle, editable);
} else {
GTK.gtk_text_view_set_editable (handle, editable);
}
}
@Override
void setFontDescription (long font) {
super.setFontDescription (font);
setTabStops (tabs);
}
/**
* Sets the widget message. The message text is displayed
* as a hint for the user, indicating the purpose of the field.
*
* Typically this is used in conjunction with SWT.SEARCH.
*
*
* @param message the new message
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the message 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
*
*
* @since 3.3
*/
public void setMessage (String message) {
checkWidget ();
if (message == null) error (SWT.ERROR_NULL_ARGUMENT);
this.message = message;
if ((style & SWT.SINGLE) != 0) {
byte [] buffer = Converter.wcsToMbcs (message, true);
if (GTK.GTK4) {
GTK4.gtk_text_set_placeholder_text (textHandle, buffer);
} else {
GTK.gtk_entry_set_placeholder_text (handle, buffer);
}
return;
}
redraw (false);
}
/**
* Sets the orientation of the receiver, which must be one
* of the constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT.
*
* Note: This operation is a hint and is not supported on
* platforms that do not have this concept.
*
*
* @param orientation new orientation 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 2.1.2
*/
@Override
public void setOrientation (int orientation) {
checkWidget();
}
/**
* Sets the selection.
*
* Indexing is zero based. The range of
* a selection is from 0..N where N is
* the number of characters in the widget.
*
* Text selections are specified in terms of
* caret positions. In a text widget that
* contains N characters, there are N+1 caret
* positions, ranging from 0..N. This differs
* from other functions that address character
* position such as getText () that use the
* regular array indexing rules.
*
*
* @param start new caret position
*
* @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 start) {
checkWidget();
start = translateOffset(start);
if ((style & SWT.SINGLE) != 0) {
long str;
if (GTK.GTK4) {
str = GTK.gtk_entry_buffer_get_text(GTK4.gtk_entry_get_buffer(handle));
} else {
str = GTK3.gtk_entry_get_text(handle);
}
start = (int)OS.g_utf16_offset_to_utf8_offset(str, start);
GTK.gtk_editable_set_position(handle, start);
} else {
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_bounds (bufferHandle, startIter, endIter);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true);
start = (int)OS.g_utf16_offset_to_utf8_offset (ptr, start);
OS.g_free (ptr);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, startIter, start);
GTK.gtk_text_buffer_place_cursor (bufferHandle, startIter);
scrollIfNotVisible(startIter, startIter, false);
}
}
/**
* Sets the selection to the range specified
* by the given start and end indices.
*
* Indexing is zero based. The range of
* a selection is from 0..N where N is
* the number of characters in the widget.
*
* Text selections are specified in terms of
* caret positions. In a text widget that
* contains N characters, there are N+1 caret
* positions, ranging from 0..N. This differs
* from other functions that address character
* position such as getText () that use the
* usual array indexing rules.
*
*
* @param start the start of the range
* @param end the end of the 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 setSelection (int start, int end) {
checkWidget ();
start = translateOffset (start);
end = translateOffset (end);
if ((style & SWT.SINGLE) != 0) {
long ptr;
if (GTK.GTK4) {
ptr = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
ptr = GTK3.gtk_entry_get_text (handle);
}
start = (int)OS.g_utf16_offset_to_utf8_offset (ptr, start);
end = (int)OS.g_utf16_offset_to_utf8_offset (ptr, end);
GTK.gtk_editable_set_position (handle, start);
GTK.gtk_editable_select_region (handle, start, end);
} else {
byte [] startIter = new byte [ITER_SIZEOF];
byte [] endIter = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_bounds (bufferHandle, startIter, endIter);
long ptr = GTK.gtk_text_buffer_get_text (bufferHandle, startIter, endIter, true);
start = (int)OS.g_utf16_offset_to_utf8_offset (ptr, start);
end = (int)OS.g_utf16_offset_to_utf8_offset (ptr, end);
OS.g_free (ptr);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, startIter, start);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, endIter, end);
scrollIfNotVisible(startIter, startIter, false);
GTK.gtk_text_buffer_select_range(bufferHandle, startIter, endIter);
}
}
/**
* Sets the selection to the range specified
* by the given point, where the x coordinate
* represents the start index and the y coordinate
* represents the end index.
*
* Indexing is zero based. The range of
* a selection is from 0..N where N is
* the number of characters in the widget.
*
* Text selections are specified in terms of
* caret positions. In a text widget that
* contains N characters, there are N+1 caret
* positions, ranging from 0..N. This differs
* from other functions that address character
* position such as getText () that use the
* usual array indexing rules.
*
*
* @param selection the point
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the point 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
*
*/
public void setSelection (Point selection) {
checkWidget ();
if (selection == null) error (SWT.ERROR_NULL_ARGUMENT);
setSelection (selection.x, selection.y);
}
/**
* Sets the number of tabs.
*
* Tab stop spacing is specified in terms of the
* space (' ') character. The width of a single
* tab stop is the pixel width of the spaces.
*
*
* @param tabs the number of tabs
*
* @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 setTabs (int tabs) {
checkWidget ();
if (tabs < 0) return;
setTabStops (this.tabs = tabs);
}
void setTabStops (int tabs) {
int tabWidth = getTabWidth (tabs);
long tabArray = OS.pango_tab_array_new (1, false);
OS.pango_tab_array_set_tab (tabArray, 0, OS.PANGO_TAB_LEFT, tabWidth);
if ((style & SWT.SINGLE) != 0) {
if (GTK.GTK4) {
GTK4.gtk_text_set_tabs (textHandle, tabArray);
} else {
GTK.gtk_entry_set_tabs (handle, tabArray);
}
} else {
GTK.gtk_text_view_set_tabs (handle, tabArray);
}
OS.pango_tab_array_free (tabArray);
}
/**
* Sets the contents of the receiver to the given string. If the receiver has style
* SINGLE and the argument contains multiple lines of text, the result of this
* operation is undefined and may vary from platform to platform.
*
* Note: If control characters like '\n', '\t' etc. are used
* in the string, then the behavior is platform dependent.
*
* @param string the new text
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string 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
*
*/
public void setText (String string) {
checkWidget ();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
/*
* Feature in gtk. When text is set in gtk, separate events are fired for the deletion and
* insertion of the text. This is not wrong, but is inconsistent with other platforms. The
* fix is to block the firing of these events and fire them ourselves in a consistent manner.
*/
if (hooks (SWT.Verify) || filters (SWT.Verify)) {
string = verifyText (string, 0, getCharCount ());
if (string == null) return;
}
char [] text = new char [string.length()];
string.getChars(0, text.length, text, 0);
setText (text);
}
/**
* Sets the contents of the receiver to the characters in the array. If the receiver
* has style SWT.SINGLE and the argument contains multiple lines of text
* then the result of this operation is undefined and may vary between platforms.
*
* Note: Use this API to prevent the text from being written into a String
* object whose lifecycle is outside of your control. This can help protect
* the text, for example, when the widget is used as a password field.
* However, the text can't be protected if an {@link SWT#Segments} or
* {@link SWT#Verify} listener has been added to the widget.
*
*
* @param text a character array that contains the new text
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the array 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 #getTextChars()
*
* @since 3.7
*/
public void setTextChars (char [] text) {
checkWidget ();
if (text == null) error (SWT.ERROR_NULL_ARGUMENT);
/*
* Feature in gtk. When text is set in gtk, separate events are fired for the deletion and
* insertion of the text. This is not wrong, but is inconsistent with other platforms. The
* fix is to block the firing of these events and fire them ourselves in a consistent manner.
*/
if (hooks (SWT.Verify) || filters (SWT.Verify)) {
String string = verifyText (new String(text), 0, getCharCount ());
if (string == null) return;
text = new char [string.length()];
string.getChars (0, text.length, text, 0);
}
setText (text);
}
void setText (char [] text) {
clearSegments (false);
if ((style & SWT.SINGLE) != 0) {
byte[] buffer = Converter.wcsToMbcs(text, true);
OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
if (GTK.GTK4) {
GTK.gtk_entry_buffer_set_text(bufferHandle, buffer, -1);
} else {
GTK3.gtk_entry_set_text(handle, buffer);
}
OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
Arrays.fill(buffer, (byte) 0);
} else {
byte [] buffer = Converter.wcsToMbcs (text, false);
byte [] position = new byte [ITER_SIZEOF];
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
OS.g_signal_handlers_block_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
GTK.gtk_text_buffer_set_text (bufferHandle, buffer, buffer.length);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_RANGE);
OS.g_signal_handlers_unblock_matched (bufferHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, TEXT_BUFFER_INSERT_TEXT);
GTK.gtk_text_buffer_get_iter_at_offset (bufferHandle, position, 0);
GTK.gtk_text_buffer_place_cursor (bufferHandle, position);
long mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
Arrays.fill (buffer, (byte) 0);
}
sendEvent (SWT.Modify);
if ((style & SWT.SEARCH) != 0 && !GTK.GTK4) {
if ((style & SWT.ICON_CANCEL) == 0) {
GTK.gtk_entry_set_icon_from_icon_name(handle, GTK.GTK_ENTRY_ICON_SECONDARY, null);
}
}
applySegments ();
}
/**
* Sets the maximum number of characters that the receiver
* is capable of holding to be the argument.
*
* Instead of trying to set the text limit to zero, consider
* creating a read-only text widget.
*
* To reset this value to the default, use setTextLimit(Text.LIMIT).
* Specifying a limit value larger than Text.LIMIT sets the
* receiver's limit to Text.LIMIT.
*
*
* @param limit new text limit
*
* @exception IllegalArgumentException
* - ERROR_CANNOT_BE_ZERO - if the limit is zero
*
* @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 #LIMIT
*/
public void setTextLimit (int limit) {
checkWidget ();
if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
if ((style & SWT.SINGLE) != 0) {
GTK.gtk_entry_set_max_length (handle, segments != null ? Math.min (LIMIT, translateOffset (limit)) : limit);
}
}
/**
* Sets the zero-relative index of the line which is currently
* at the top of the receiver. This index can change when lines
* are scrolled or new lines are added and removed.
*
* @param index the index of the top 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 setTopIndex (int index) {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return;
byte [] position = new byte [ITER_SIZEOF];
GTK.gtk_text_buffer_get_iter_at_line (bufferHandle, position, index);
/*
* Feature in GTK: create a new GtkTextMark for the purposes of keeping track of the top index. In getTopIndex() we
* can use this without worrying about line validation. See bug 487467.
*
* We also cache the current GtkAdjustment value for future comparison in getTopIndex().
*/
byte [] buffer = Converter.wcsToMbcs ("index_mark", true);
indexMark = GTK.gtk_text_buffer_create_mark (bufferHandle, buffer, position, true);
GTK.gtk_text_view_scroll_to_mark (handle, indexMark, 0, true, 0, 0);
long vAdjustment = GTK.gtk_scrollable_get_vadjustment (handle);
cachedAdjustment = GTK.gtk_adjustment_get_value (vAdjustment);
}
/**
* Shows the selection.
*
* If the selection is already showing
* in the receiver, this method simply returns. Otherwise,
* lines 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
*
*/
public void showSelection () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return;
long mark = GTK.gtk_text_buffer_get_selection_bound (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
mark = GTK.gtk_text_buffer_get_insert (bufferHandle);
GTK.gtk_text_view_scroll_to_mark (handle, mark, 0, true, 0, 0);
}
int translateOffset (int offset) {
if (segments == null) return offset;
for (int i = 0, nSegments = segments.length; i < nSegments && offset - i >= segments[i]; i++) {
offset++;
}
return offset;
}
@Override
boolean translateTraversal (long event) {
int [] key = new int[1];
if (GTK.GTK4) {
key[0] = GDK.gdk_key_event_get_keyval(event);
} else {
GDK.gdk_event_get_keyval(event, key);
}
switch (key[0]) {
case GDK.GDK_KP_Enter:
case GDK.GDK_Return: {
if (imContext != 0) {
long [] preeditString = new long [1];
GTK.gtk_im_context_get_preedit_string (imContext, preeditString, null, null);
if (preeditString [0] != 0) {
int length = C.strlen (preeditString [0]);
OS.g_free (preeditString [0]);
if (length != 0) return false;
}
}
}
}
return super.translateTraversal (event);
}
@Override
int traversalCode (int key, long event) {
int bits = super.traversalCode (key, event);
if ((style & SWT.READ_ONLY) != 0) return bits;
if ((style & SWT.MULTI) != 0) {
bits &= ~SWT.TRAVERSE_RETURN;
if (key == GDK.GDK_Tab && event != 0) {
int [] eventState = new int [1];
if (GTK.GTK4) {
eventState[0] = GDK.gdk_event_get_modifier_state(event);
} else {
GDK.gdk_event_get_state(event, eventState);
}
boolean next = (eventState[0] & GDK.GDK_SHIFT_MASK) == 0;
if (next && (eventState[0] & GDK.GDK_CONTROL_MASK) == 0) {
bits &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS);
}
}
}
return bits;
}
int untranslateOffset (int offset) {
if (segments == null) return offset;
for (int i = 0, nSegments = segments.length; i < nSegments && offset > segments[i]; i++) {
offset--;
}
return offset;
}
String verifyText (String string, int start, int end) {
if (string != null && string.length () == 0 && start == end) return null;
Event event = new Event ();
event.text = string;
event.start = start;
event.end = end;
long eventPtr = GTK.GTK4 ? 0 : GTK3.gtk_get_current_event();
if (eventPtr != 0) {
int type = GDK.gdk_event_get_event_type(eventPtr);
type = fixGdkEventTypeValues(type);
switch (type) {
case GDK.GDK_KEY_PRESS:
setKeyState (event, eventPtr);
break;
}
gdk_event_free (eventPtr);
}
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in the verify
* event. If this happens, answer null to cancel
* the operation.
*/
sendEvent (SWT.Verify, event);
if (!event.doit || isDisposed ()) return null;
return event.text;
}
@Override
long windowProc (long handle, long user_data) {
if (hooks (SWT.Segments) || filters (SWT.Segments) || segments != null) {
switch ((int)user_data) {
case BACKSPACE:
case COPY_CLIPBOARD:
case CUT_CLIPBOARD:
case PASTE_CLIPBOARD: {
clearSegments (true);
break;
}
case BACKSPACE_INVERSE:
case COPY_CLIPBOARD_INVERSE:
case CUT_CLIPBOARD_INVERSE:
case PASTE_CLIPBOARD_INVERSE: {
applySegments ();
break;
}
}
}
return super.windowProc (handle, user_data);
}
@Override
long windowProc (long handle, long arg0, long user_data) {
if (hooks (SWT.Segments) || filters (SWT.Segments) || segments != null) {
switch ((int)user_data) {
case DIRECTION_CHANGED: {
clearSegments (true);
applySegments ();
break;
}
}
}
return super.windowProc (handle, arg0, user_data);
}
@Override
long windowProc (long handle, long arg0, long arg1, long user_data) {
if (hooks (SWT.Segments) || filters (SWT.Segments) || segments != null) {
switch ((int)user_data) {
case DELETE_FROM_CURSOR: {
clearSegments (true);
break;
}
case DELETE_FROM_CURSOR_INVERSE: {
applySegments ();
break;
}
}
}
return super.windowProc (handle, arg0, arg1, user_data);
}
@Override
long windowProc (long handle, long arg0, long arg1, long arg2, long user_data) {
if (hooks (SWT.Segments) || filters (SWT.Segments) || segments != null) {
switch ((int)user_data) {
case MOVE_CURSOR: {
if (arg0 == GTK.GTK_MOVEMENT_VISUAL_POSITIONS) {
clearSegments (true);
}
break;
}
case MOVE_CURSOR_INVERSE: {
if (arg0 == GTK.GTK_MOVEMENT_VISUAL_POSITIONS) {
applySegments ();
}
break;
}
}
}
return super.windowProc (handle, arg0, arg1, arg2, user_data);
}
}
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