Mercurial > projects > dwt-addons
view dwtx/jface/resource/ColorRegistry.d @ 43:ea8ff534f622
Fix override and super aliases
author | Frank Benoit <benoit@tionex.de> |
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date | Fri, 11 Apr 2008 01:24:25 +0200 |
parents | 6c14e54dfc11 |
children | 46a6e0e6ccd4 |
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/******************************************************************************* * Copyright (c) 2003, 2006 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.resource.ColorRegistry; import dwtx.jface.resource.ResourceRegistry; import dwtx.jface.resource.ColorDescriptor; import tango.util.collection.ArraySeq; import tango.util.collection.HashMap; import tango.util.collection.HashSet; import tango.util.collection.model.Map; import tango.util.collection.model.Set; import tango.util.collection.model.SetView; import tango.util.collection.model.Seq; import dwt.graphics.Color; import dwt.graphics.RGB; import dwt.widgets.Display; import dwtx.core.runtime.Assert; import dwt.dwthelper.utils; import dwt.dwthelper.Runnable; /** * A color registry maintains a mapping between symbolic color names and DWT * <code>Color</code>s. * <p> * A color registry owns all of the <code>Color</code> objects registered with * it, and automatically disposes of them when the DWT Display that creates the * <code>Color</code>s is disposed. Because of this, clients do not need to * (indeed, must not attempt to) dispose of <code>Color</code> objects * themselves. * </p> * <p> * Methods are provided for registering listeners that will be kept * apprised of changes to list of registed colors. * </p> * <p> * Clients may instantiate this class (it was not designed to be subclassed). * </p> * * @since 3.0 */ public class ColorRegistry : ResourceRegistry { /** * This registries <code>Display</code>. All colors will be allocated using * it. */ protected Display display; /** * Collection of <code>Color</code> that are now stale to be disposed when * it is safe to do so (i.e. on shutdown). */ private Seq!(Color) staleColors; /** * Table of known colors, keyed by symbolic color name (key type: <code>String</code>, * value type: <code>dwt.graphics.Color</code>. */ private Map!(String,Color) stringToColor; /** * Table of known color data, keyed by symbolic color name (key type: * <code>String</code>, value type: <code>dwt.graphics.RGB</code>). */ private Map!(String,RGB) stringToRGB; /** * Runnable that cleans up the manager on disposal of the display. */ protected Runnable displayRunnable; private void init_displayRunnable(){ displayRunnable = new class Runnable { public void run() { clearCaches(); } }; } /** * Create a new instance of the receiver that is hooked to the current * display. * * @see dwt.widgets.Display#getCurrent() */ public this() { this(Display.getCurrent(), true); } /** * Create a new instance of the receiver. * * @param display the <code>Display</code> to hook into. */ public this(Display display) { this (display, true); } /** * Create a new instance of the receiver. * * @param display the <code>Display</code> to hook into * @param cleanOnDisplayDisposal * whether all fonts allocated by this <code>ColorRegistry</code> * should be disposed when the display is disposed * @since 3.1 */ public this(Display display, bool cleanOnDisplayDisposal) { staleColors = new ArraySeq!(Color); stringToColor = new HashMap!(String,Color); stringToRGB = new HashMap!(String,RGB); init_displayRunnable(); Assert.isNotNull(display); this.display = display; if (cleanOnDisplayDisposal) { hookDisplayDispose(); } } /** * Create a new <code>Color</code> on the receivers <code>Display</code>. * * @param rgb the <code>RGB</code> data for the color. * @return the new <code>Color</code> object. * * @since 3.1 */ private Color createColor(RGB rgb) { return new Color(display, rgb); } /** * Dispose of all of the <code>Color</code>s in this iterator. * * @param iterator over <code>Collection</code> of <code>Color</code> */ /+ private void disposeColors(Iterator iterator) { while (iterator.hasNext()) { Object next = iterator.next(); ((Color) next).dispose(); } } +/ /** * Returns the <code>color</code> associated with the given symbolic color * name, or <code>null</code> if no such definition exists. * * @param symbolicName symbolic color name * @return the <code>Color</code> or <code>null</code> */ public Color get(String symbolicName) { Assert.isNotNull(symbolicName); auto result1 = stringToColor.get(symbolicName); if (result1 !is null) { return result1; } Color color = null; auto result = stringToRGB.get(symbolicName); if (result is null) { return null; } color = createColor(result); stringToColor.add(symbolicName, color); return color; } /* (non-Javadoc) * @see dwtx.jface.resource.ResourceRegistry#getKeySet() */ public override SetView!(String) getKeySet() { auto res = new HashSet!(String); foreach( k,v; stringToRGB ){ res.add(k); } return res; } /** * Returns the color data associated with the given symbolic color name. * * @param symbolicName symbolic color name. * @return the <code>RGB</code> data. */ public RGB getRGB(String symbolicName) { Assert.isNotNull(symbolicName); return stringToRGB.get(symbolicName); } /** * Returns the color descriptor associated with the given symbolic color name. * @since 3.1 * * @param symbolicName * @return the color descriptor associated with the given symbolic color name. */ public ColorDescriptor getColorDescriptor(String symbolicName) { return ColorDescriptor.createFrom(getRGB(symbolicName)); } /* (non-Javadoc) * @see dwtx.jface.resource.ResourceRegistry#clearCaches() */ protected override void clearCaches() { foreach( k, v; stringToColor ){ v.dispose(); } foreach( v; staleColors ){ v.dispose(); } // disposeColors(stringToColor.values().iterator()); // disposeColors(staleColors.iterator()); stringToColor.clear(); staleColors.clear(); } /* (non-Javadoc) * @see dwtx.jface.resource.ResourceRegistry#hasValueFor(java.lang.String) */ public override bool hasValueFor(String colorKey) { return stringToRGB.containsKey(colorKey); } /** * Hook a dispose listener on the DWT display. */ private void hookDisplayDispose() { display.disposeExec(displayRunnable); } /** * Adds (or replaces) a color to this color registry under the given * symbolic name. * <p> * A property change event is reported whenever the mapping from a symbolic * name to a color changes. The source of the event is this registry; the * property name is the symbolic color name. * </p> * * @param symbolicName the symbolic color name * @param colorData an <code>RGB</code> object */ public void put(String symbolicName, RGB colorData) { put(symbolicName, colorData, true); } /** * Adds (or replaces) a color to this color registry under the given * symbolic name. * <p> * A property change event is reported whenever the mapping from a symbolic * name to a color changes. The source of the event is this registry; the * property name is the symbolic color name. * </p> * * @param symbolicName the symbolic color name * @param colorData an <code>RGB</code> object * @param update - fire a color mapping changed if true. False if this * method is called from the get method as no setting has * changed. */ private void put(String symbolicName, RGB colorData, bool update) { Assert.isNotNull(symbolicName); Assert.isNotNull(colorData); RGB existing = stringToRGB.get(symbolicName); if (colorData.opEquals(existing)) { return; } Color oldColor = stringToColor.get(symbolicName); stringToColor.removeKey(symbolicName); stringToRGB.add(symbolicName, colorData); if (update) { fireMappingChanged(symbolicName, existing, colorData); } if (oldColor !is null) { staleColors.append(oldColor); } } }