| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.e4.demo.simpleide.jdt.internal.editor.scanners; |
| |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.RGB; |
| import org.eclipse.swt.widgets.Display; |
| |
| /** |
| * Java color manager. |
| */ |
| public class JavaColorManager implements IColorManager, IColorManagerExtension { |
| |
| protected Map<String,RGB> fKeyTable= new HashMap<String,RGB>(10); |
| protected Map<Display,Map<RGB,Color>> fDisplayTable= new HashMap<Display,Map<RGB,Color>>(2); |
| |
| /** |
| * Flag which tells if the colors are automatically disposed when |
| * the current display gets disposed. |
| */ |
| private boolean fAutoDisposeOnDisplayDispose; |
| |
| |
| /** |
| * Creates a new Java color manager which automatically |
| * disposes the allocated colors when the current display |
| * gets disposed. |
| */ |
| public JavaColorManager() { |
| this(true); |
| } |
| |
| /** |
| * Creates a new Java color manager. |
| * |
| * @param autoDisposeOnDisplayDispose if <code>true</code> the color manager |
| * automatically disposes all managed colors when the current display gets disposed |
| * and all calls to {@link org.eclipse.jface.text.source.ISharedTextColors#dispose()} are ignored. |
| * |
| * @since 2.1 |
| */ |
| public JavaColorManager(boolean autoDisposeOnDisplayDispose) { |
| fAutoDisposeOnDisplayDispose= autoDisposeOnDisplayDispose; |
| } |
| |
| public void dispose(Display display) { |
| Map<RGB,Color> colorTable= fDisplayTable.get(display); |
| if (colorTable != null) { |
| Iterator<Color> e= colorTable.values().iterator(); |
| while (e.hasNext()) { |
| Color color= (Color)e.next(); |
| if (color != null && !color.isDisposed()) |
| color.dispose(); |
| } |
| } |
| } |
| |
| /* |
| * @see IColorManager#getColor(RGB) |
| */ |
| public Color getColor(RGB rgb) { |
| |
| if (rgb == null) |
| return null; |
| |
| final Display display= Display.getCurrent(); |
| Map<RGB,Color> colorTable= fDisplayTable.get(display); |
| if (colorTable == null) { |
| colorTable= new HashMap<RGB,Color>(10); |
| fDisplayTable.put(display, colorTable); |
| if (fAutoDisposeOnDisplayDispose) { |
| display.disposeExec(new Runnable() { |
| public void run() { |
| dispose(display); |
| } |
| }); |
| } |
| } |
| |
| Color color= (Color) colorTable.get(rgb); |
| if (color == null) { |
| color= new Color(Display.getCurrent(), rgb); |
| colorTable.put(rgb, color); |
| } |
| |
| return color; |
| } |
| |
| /* |
| * @see IColorManager#dispose |
| */ |
| public void dispose() { |
| if (!fAutoDisposeOnDisplayDispose) |
| dispose(Display.getCurrent()); |
| } |
| |
| /* |
| * @see IColorManager#getColor(String) |
| */ |
| public Color getColor(String key) { |
| |
| if (key == null) |
| return null; |
| |
| RGB rgb= (RGB) fKeyTable.get(key); |
| return getColor(rgb); |
| } |
| |
| /* |
| * @see IColorManagerExtension#bindColor(String, RGB) |
| */ |
| public void bindColor(String key, RGB rgb) { |
| Object value= fKeyTable.get(key); |
| if (value != null) |
| throw new UnsupportedOperationException(); |
| |
| fKeyTable.put(key, rgb); |
| } |
| |
| /* |
| * @see IColorManagerExtension#unbindColor(String) |
| */ |
| public void unbindColor(String key) { |
| fKeyTable.remove(key); |
| } |
| } |