intial source from ttp://www.sf.net/projects/wdte

[phpeclipse.git] / archive / net.sourceforge.phpeclipse.css.ui / src / net / sourceforge / phpeclipse / css / ui / internal / text / CssColorManager.java

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssColorManager.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssColorManager.java
new file mode 100644 (file)
index 0000000..396fc26
--- /dev/null
+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssColorManager.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2003-2004 Christopher Lenz and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     Christopher Lenz - initial API and implementation
+ * 
+ * $Id: CssColorManager.java,v 1.1 2004-09-02 18:11:48 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.text;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import net.sourceforge.phpeclipse.css.ui.text.IColorManager;
+
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.widgets.Display;
+
+/**
+ * CSS color manager.
+ */
+public class CssColorManager implements IColorManager {
+
+       // Instance Variables ------------------------------------------------------
+
+       private Map keyTable = new HashMap(10);
+
+       private Map displayTable = new HashMap(2);
+
+       /** 
+        * Flag which tells if the colors are automatically disposed when the
+        * current display gets disposed.
+        */
+       private boolean autoDisposeOnDisplayDispose;
+
+       // Constructors ------------------------------------------------------------
+
+       /**
+        * Creates a new CSS color manager which automatically disposes the
+        * allocated colors when the current display gets disposed.
+        */ 
+       public CssColorManager() {
+               this(true);
+       }
+
+       /**
+        * Creates a new CSS 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.
+        */
+       public CssColorManager(boolean autoDisposeOnDisplayDispose) {
+               this.autoDisposeOnDisplayDispose = autoDisposeOnDisplayDispose;
+       }
+       
+       // IColorManager Implementation --------------------------------------------
+
+       /*
+        * @see org.eclipse.jface.text.source.ISharedTextColors#dispose()
+        */
+       public void dispose() {
+               if (!this.autoDisposeOnDisplayDispose) {
+                       dispose(Display.getCurrent());
+               }
+       }
+       
+       /*
+        * @see org.eclipse.jface.text.source.ISharedTextColors#getColor(RGB)
+        */
+       public Color getColor(RGB rgb) {
+               if (rgb == null) {
+                       return null;
+               }
+               final Display display = Display.getCurrent();
+               Map colorTable = (Map) this.displayTable.get(display);
+               if (colorTable == null) {
+                       colorTable = new HashMap(10);
+                       this.displayTable.put(display, colorTable);
+                       if (this.autoDisposeOnDisplayDispose) {
+                               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#bindColor(String, RGB)
+        */
+       public void bindColor(String key, RGB rgb) {
+               Object value = this.keyTable.get(key);
+               if (value != null) {
+                       throw new IllegalStateException();
+               }
+               this.keyTable.put(key, rgb);
+       }
+
+       /*
+        * @see IColorManager#getColor(String)
+        */
+       public Color getColor(String key) {
+               if (key == null) {
+                       return null;
+               }
+               RGB rgb = (RGB) this.keyTable.get(key);
+               return getColor(rgb);
+       }
+
+       /*
+        * @see IColorManager#unbindColor(String)
+        */
+       public void unbindColor(String key) {
+               this.keyTable.remove(key);
+       }
+
+       // Private Methods ---------------------------------------------------------
+
+       private void dispose(Display display) {
+               Map colorTable = (Map) this.displayTable.get(display);
+               if (colorTable != null) {
+                       for (Iterator i = colorTable.values().iterator(); i.hasNext(); ) {
+                               Color color = (Color) i.next();
+                               if (color != null && !color.isDisposed()) {
+                                       color.dispose();
+                               }
+                       }
+               }
+       }
+       
+}