| /******************************************************************************* |
| * Copyright (c) 2001, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.wsdl.ui.internal.util.flatui; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.accessibility.ACC; |
| import org.eclipse.swt.accessibility.AccessibleAdapter; |
| import org.eclipse.swt.accessibility.AccessibleControlAdapter; |
| import org.eclipse.swt.accessibility.AccessibleControlEvent; |
| import org.eclipse.swt.accessibility.AccessibleEvent; |
| import org.eclipse.swt.events.FocusEvent; |
| import org.eclipse.swt.events.FocusListener; |
| import org.eclipse.swt.events.KeyAdapter; |
| import org.eclipse.swt.events.KeyEvent; |
| import org.eclipse.swt.events.MouseAdapter; |
| import org.eclipse.swt.events.MouseEvent; |
| import org.eclipse.swt.events.MouseTrackAdapter; |
| import org.eclipse.swt.events.PaintEvent; |
| import org.eclipse.swt.events.PaintListener; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Cursor; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Canvas; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.TypedListener; |
| |
| public class ToggleControl extends Canvas { |
| private boolean fCollapsed; |
| private Color fDecorationColor; |
| private Color fActiveColor; |
| private Cursor fActiveCursor; |
| private boolean fHasFocus; |
| private boolean fHover = false; |
| private static final int MARGIN_WIDTH = 2; |
| private static final int MARGIN_HEIGHT = 2; |
| |
| private static final int DEFAULT_HEIGHT = 8; |
| private static final int[] EXPANDED_POINTS = { 0, 2, 8, 2, 4, 6 }; |
| private static final int[] COLLAPSED_POINTS = { 2, 0, 2, 8, 6, 4 }; |
| private int fHeight = DEFAULT_HEIGHT; |
| |
| /* accessibility */ |
| private String fName; |
| private String fDescription; |
| |
| public ToggleControl(Composite parent, int style) { |
| super(parent, style); |
| initAccessible(); |
| |
| addPaintListener(new PaintListener() { |
| public void paintControl(PaintEvent e) { |
| paint(e); |
| } |
| }); |
| addMouseListener(new MouseAdapter() { |
| public void mouseDown(MouseEvent e) { |
| notifyListeners(SWT.Selection); |
| } |
| }); |
| addKeyListener(new KeyAdapter() { |
| public void keyPressed(KeyEvent e) { |
| if (e.character == '\r' || e.character == ' ') { |
| // Activation |
| notifyListeners(SWT.Selection); |
| } |
| } |
| }); |
| addListener(SWT.Traverse, new Listener() { |
| public void handleEvent(Event e) { |
| if (e.detail != SWT.TRAVERSE_RETURN) |
| e.doit = true; |
| } |
| }); |
| addFocusListener(new FocusListener() { |
| public void focusGained(FocusEvent e) { |
| if (!fHasFocus) { |
| fHasFocus = true; |
| redraw(); |
| } |
| } |
| public void focusLost(FocusEvent e) { |
| if (fHasFocus) { |
| fHasFocus = false; |
| redraw(); |
| } |
| } |
| }); |
| |
| addSelectionListener(new SelectionAdapter() { |
| public void widgetSelected(SelectionEvent e) { |
| fCollapsed = !fCollapsed; |
| redraw(); |
| } |
| }); |
| |
| addMouseTrackListener(new MouseTrackAdapter() { |
| public void mouseEnter(MouseEvent e) { |
| fHover = true; |
| if (fActiveCursor != null) |
| setCursor(fActiveCursor); |
| redraw(); |
| } |
| public void mouseExit(MouseEvent e) { |
| fHover = false; |
| if (fActiveCursor != null) |
| setCursor(null); |
| redraw(); |
| } |
| }); |
| } |
| |
| public void addSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener != null) |
| addListener(SWT.Selection, new TypedListener(listener)); |
| } |
| |
| public void setDecorationColor(Color decorationColor) { |
| this.fDecorationColor = decorationColor; |
| } |
| |
| public Color getDecorationColor() { |
| return fDecorationColor; |
| } |
| |
| public void setActiveDecorationColor(Color activeColor) { |
| this.fActiveColor = activeColor; |
| } |
| |
| public void removeSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener != null) |
| removeListener(SWT.Selection, listener); |
| } |
| |
| public void setActiveCursor(Cursor activeCursor) { |
| this.fActiveCursor = activeCursor; |
| } |
| |
| public Color getActiveDecorationColor() { |
| return fActiveColor; |
| } |
| |
| public Point computeSize(int wHint, int hHint, boolean changed) { |
| |
| return new Point((wHint != SWT.DEFAULT ? wHint : fHeight + 2 * MARGIN_WIDTH), (hHint != SWT.DEFAULT ? hHint : fHeight + 2 * MARGIN_HEIGHT)); |
| } |
| |
| protected void paint(PaintEvent e) { |
| GC gc = e.gc; |
| Point size = getSize(); |
| gc.setFont(getFont()); |
| paint(gc); |
| if (fHasFocus) { |
| gc.setForeground(getForeground()); |
| gc.drawFocus(0, 0, size.x, size.y); |
| } |
| } |
| |
| /* |
| * @see SelectableControl#paint(GC) |
| */ |
| protected void paint(GC gc) { |
| if (fHover && fActiveColor != null) |
| gc.setBackground(fActiveColor); |
| else if (fDecorationColor != null) |
| gc.setBackground(fDecorationColor); |
| else |
| gc.setBackground(getForeground()); |
| Point size = getSize(); |
| gc.fillPolygon(translate((fCollapsed ? COLLAPSED_POINTS : EXPANDED_POINTS), ((size.x - fHeight) / 2), ((size.y - fHeight) / 2))); |
| gc.setBackground(getBackground()); |
| } |
| |
| private int[] translate(int[] data, int x, int y) { |
| int[] target = new int[data.length]; |
| for (int i = 0; i < data.length; i += 2) { |
| target[i] = data[i]*fHeight/DEFAULT_HEIGHT + x; |
| } |
| for (int i = 1; i < data.length; i += 2) { |
| target[i] = data[i]*fHeight/DEFAULT_HEIGHT + y; |
| } |
| return target; |
| } |
| |
| public void setHeight(int y) { |
| fHeight = y; |
| } |
| |
| private void notifyListeners(int eventType) { |
| Event event = new Event(); |
| event.type = eventType; |
| event.widget = this; |
| notifyListeners(eventType, event); |
| } |
| |
| public boolean getSelection() { |
| return fCollapsed; |
| } |
| |
| public void setSelection(boolean selection) { |
| this.fCollapsed = selection; |
| } |
| |
| public void setName(String name) { |
| fName = name; |
| } |
| |
| public void setDescription(String description) { |
| fDescription = description; |
| } |
| |
| private void initAccessible() { |
| getAccessible().addAccessibleListener(new AccessibleAdapter() { |
| |
| public void getName(AccessibleEvent e) { |
| e.result = fName; |
| } |
| |
| public void getDescription(AccessibleEvent e) { |
| e.result = fDescription; |
| } |
| }); |
| |
| getAccessible().addAccessibleControlListener(new AccessibleControlAdapter() { |
| |
| public void getLocation(AccessibleControlEvent e) { |
| Rectangle location = getBounds(); |
| Point pt = toDisplay(new Point(location.x, location.y)); |
| e.x = pt.x; |
| e.y = pt.y; |
| e.width = location.width; |
| e.height = location.height; |
| } |
| |
| public void getChildCount(AccessibleControlEvent e) { |
| e.detail = 0; |
| } |
| |
| public void getRole(AccessibleControlEvent e) { |
| e.detail = ACC.ROLE_TREE; |
| } |
| |
| public void getState(AccessibleControlEvent e) { |
| e.detail = fCollapsed ? ACC.STATE_COLLAPSED : ACC.STATE_EXPANDED; |
| } |
| |
| }); |
| } |
| |
| } |