org.nakedobjects.plugins.dnd.viewer.basic.PopupMenuContainer Maven / Gradle / Ivy
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package org.nakedobjects.plugins.dnd.viewer.basic;
import java.awt.event.KeyEvent;
import java.util.Enumeration;
import java.util.Vector;
import org.nakedobjects.metamodel.commons.debug.DebugString;
import org.nakedobjects.plugins.dnd.Canvas;
import org.nakedobjects.plugins.dnd.Click;
import org.nakedobjects.plugins.dnd.ColorsAndFonts;
import org.nakedobjects.plugins.dnd.Content;
import org.nakedobjects.plugins.dnd.KeyboardAction;
import org.nakedobjects.plugins.dnd.MenuOptions;
import org.nakedobjects.plugins.dnd.NullContent;
import org.nakedobjects.plugins.dnd.Toolkit;
import org.nakedobjects.plugins.dnd.UserAction;
import org.nakedobjects.plugins.dnd.UserActionSet;
import org.nakedobjects.plugins.dnd.View;
import org.nakedobjects.plugins.dnd.viewer.debug.DebugOption;
import org.nakedobjects.plugins.dnd.viewer.drawing.Color;
import org.nakedobjects.plugins.dnd.viewer.drawing.Location;
import org.nakedobjects.plugins.dnd.viewer.drawing.Size;
import org.nakedobjects.plugins.dnd.viewer.view.simple.AbstractView;
public class PopupMenuContainer extends AbstractView {
private static final int MENU_OVERLAP = 4;
private static final UserAction DEBUG_OPTION = new DebugOption();
private PopupMenu menu;
private PopupMenu submenu;
private Color backgroundColor;
private View target;
private final Vector options = new Vector();
private final Location at;
private boolean isLayoutInvalid;
public PopupMenuContainer(View target, Location at) {
super(new NullContent(), null, null);
this.target = target;
this.at = at;
setLocation(at);
isLayoutInvalid = true;
}
@Override
public void debug(final DebugString debug) {
super.debug(debug);
debug.appendTitle("Submenu");
debug.append(submenu);
debug.append("\n");
}
@Override
public void dispose() {
if (getParent() == null) {
super.dispose();
getViewManager().clearOverlayView(this);
} else {
getParent().dispose();
}
}
@Override
public Size getMaximumSize() {
final Size size = menu.getMaximumSize();
if (submenu != null) {
final Size subviewSize = submenu.getMaximumSize();
size.extendWidth(subviewSize.getWidth() - MENU_OVERLAP);
size.ensureHeight(submenuOffset() + subviewSize.getHeight());
}
return size;
}
@Override
public void layout(final Size maximumSize) {
if (isLayoutInvalid) {
menu.layout(maximumSize);
Size menuSize = menu.getMaximumSize();
menu.setSize(menuSize);
menu.setLocation(new Location(0,0));
Location containerLocation = new Location(at);
Size bounds = getViewManager().getOverlaySize();
if (containerLocation.getX() < 0) {
containerLocation.setX(0);
} else if (containerLocation.getX() + menuSize.getWidth() > bounds.getWidth()) {
containerLocation.setX(bounds.getWidth() - menuSize.getWidth());
}
if (containerLocation.getY() < 0) {
containerLocation.setY(0);
} else if (containerLocation.getY() + menuSize.getHeight() > bounds.getHeight()) {
containerLocation.setY(bounds.getHeight() - menuSize.getHeight());
}
if (submenu != null) {
submenu.layout(maximumSize);
Size submenuSize = submenu.getMaximumSize();
submenu.setSize(submenuSize);
int submenuOffset = submenuOffset();
Location menuLocation = new Location();
int containerBottom = containerLocation.getY() + submenuOffset + submenuSize.getHeight();
if (containerBottom > bounds.getHeight()) {
int overstretch = containerBottom - bounds.getHeight();
submenuOffset -= overstretch;
}
Location submenuLocation = new Location(0, submenuOffset);
boolean placeToLeft = at.getX() + menuSize.getWidth() + submenuSize.getWidth() < getViewManager().getOverlaySize().getWidth();
if (placeToLeft) {
submenuLocation.setX(menuSize.getWidth() - MENU_OVERLAP);
} else {
menuLocation.setX(submenuSize.getWidth() - MENU_OVERLAP);
containerLocation.move(-submenu.getSize().getWidth() + MENU_OVERLAP, 0);
}
if (containerLocation.getY() + menuSize.getHeight() > bounds.getHeight()) {
containerLocation.setY(bounds.getHeight() - menuSize.getHeight());
}
submenu.setLocation(submenuLocation); //// !
menu.setLocation(menuLocation); /// !
}
setLocation(containerLocation);
}
}
private int submenuOffset() {
return menu.getOptionPostion();
}
@Override
public void mouseMoved(final Location at) {
if (menu.getBounds().contains(at)) {
at.subtract(menu.getLocation());
menu.mouseMoved(at);
} else if (submenu != null && submenu.getBounds().contains(at)) {
at.subtract(submenu.getLocation());
submenu.mouseMoved(at);
}
}
public void show(final boolean forView, final boolean includeDebug, final boolean includeExploration) {
final boolean withExploration = getViewManager().isRunningAsExploration() && includeExploration;
final UserActionSet optionSet = new UserActionSet(withExploration, includeDebug, UserAction.USER);
if (forView) {
target.viewMenuOptions(optionSet);
} else {
target.contentMenuOptions(optionSet);
}
optionSet.add(DEBUG_OPTION);
final Enumeration e = options.elements();
while (e.hasMoreElements()) {
final MenuOptions element = (MenuOptions) e.nextElement();
element.menuOptions(optionSet);
}
menu = new PopupMenu(this);
backgroundColor = optionSet.getColor();
menu.show(target, optionSet.getMenuOptions(), backgroundColor);
getViewManager().setOverlayView(this);
final String status = changeStatus(target, forView, withExploration, includeDebug);
getFeedbackManager().setViewDetail(status);
}
private String changeStatus(
final View over,
final boolean forView,
final boolean includeExploration,
final boolean includeDebug) {
final StringBuffer status = new StringBuffer("Menu for ");
if (forView) {
status.append("view ");
status.append(over.getSpecification().getName());
} else {
status.append("object");
final Content content = over.getContent();
if (content != null) {
status.append(" '");
status.append(content.title());
status.append("'");
}
}
if (includeDebug || includeExploration) {
status.append(" (includes ");
if (includeExploration) {
status.append("exploration");
}
if (includeDebug) {
if (includeExploration) {
status.append(" & ");
}
status.append("debug");
}
status.append(" options)");
}
return status.toString();
}
public void addMenuOptions(final MenuOptions options) {
this.options.addElement(options);
}
void openSubmenu(final UserAction[] options) {
markDamaged();
submenu = new PopupMenu(this);
submenu.setParent(this);
submenu.show(target, options, backgroundColor);
invalidateLayout();
final Size size = getMaximumSize();
setSize(size);
layout(size);
isLayoutInvalid = false;
markDamaged();
}
@Override
public void keyPressed(final KeyboardAction key) {
if (submenu != null) {
final int keyCode = key.getKeyCode();
if (keyCode == KeyEvent.VK_ESCAPE) {
markDamaged();
invalidateLayout();
submenu = null;
key.consume();
} else if (getParent() != null && keyCode == KeyEvent.VK_LEFT) {
markDamaged();
invalidateLayout();
submenu = null;
key.consume();
} else {
submenu.keyPressed(key);
}
} else {
menu.keyPressed(key);
}
}
public void invalidateLayout() {
isLayoutInvalid = true;
}
public void draw(Canvas canvas) {
super.draw(canvas);
if (menu != null) {
final Canvas menuCanvas = canvas.createSubcanvas(menu.getBounds());
menu.draw(menuCanvas);
}
if (submenu != null) {
final Canvas submenuCanvas = canvas.createSubcanvas(submenu.getBounds());
submenu.draw(submenuCanvas);
}
if (Toolkit.debug) {
canvas.drawRectangleAround(this, Toolkit.getColor(ColorsAndFonts.COLOR_DEBUG_BOUNDS_VIEW));
}
}
@Override
public void firstClick(final Click click) {
Location location = click.getLocation();
if (menu.getBounds().contains(location)) {
click.subtract(menu.getLocation());
menu.firstClick(click);
} else if (submenu != null && submenu.getBounds().contains(location)) {
click.subtract(submenu.getLocation());
submenu.firstClick(click);
}
}
}
// Copyright (c) Naked Objects Group Ltd.
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