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/*****************************************************************************
* Copyright (c) 2008 CEA LIST.
*
*
* 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:
* Remi Schnekenburger (CEA LIST) Remi.Schnekenburger@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.parsers.texteditor.propertylabel;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.papyrus.parsers.PapyrusParsersPlugin;
import org.eclipse.papyrus.parsers.preferences.IPreferencesConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
/**
* Color provider to syntax highlight.
*/
public class PropertyLabelColorProvider implements IPropertyLabelColorConstants {
/**
*
*/
private static PropertyLabelColorProvider instance;
/**
*
*/
private PropertyLabelColorProvider() {
}
/**
*
*
* @return
*/
public static PropertyLabelColorProvider getDefault() {
if (instance == null) {
instance = new PropertyLabelColorProvider();
}
return instance;
}
/**
*
*/
protected Map<String, Color> fColorTable = new HashMap<String, Color>(10);
/**
* Set default colors in given preference store.
*
* @param aStore
* the pref store
*/
public static void initializeDefaults(IPreferenceStore aStore) {
PreferenceConverter.setDefault(aStore, IPreferencesConstants.COLOR_DEFAULT,
IPropertyLabelColorConstants.RGB_DEFAULT);
PreferenceConverter.setDefault(aStore, IPreferencesConstants.COLOR_KEYWORD,
IPropertyLabelColorConstants.RGB_KEYWORD);
PreferenceConverter.setDefault(aStore, IPreferencesConstants.COLOR_STRING,
IPropertyLabelColorConstants.RGB_STRING);
PreferenceConverter.setDefault(aStore, IPreferencesConstants.COLOR_SYMBOL,
IPropertyLabelColorConstants.RGB_SYMBOL);
}
/**
* Returns specified color that is stored in the color table. If color not found in color table
* then a new instance is created from according preferences value and stored in color table.
*
* @param aName
* the name of the color
*
* @return the color instance
*/
public Color getColor(String aName) {
Color color = fColorTable.get(aName);
if (color == null) {
IPreferenceStore store = PapyrusParsersPlugin.getDefault().getPreferenceStore();
// PreferenceConverter.setValue(store, IPreferencesConstants.COLOR_KEYWORD,
// ILabelColorConstants.RGB_KEYWORD);
PreferenceConverter.setValue(store, IPreferencesConstants.COLOR_SYMBOL,
IPropertyLabelColorConstants.RGB_SYMBOL);
RGB rgb = PreferenceConverter.getColor(store, IPreferencesConstants.PREFIX_COLOR + aName);
if (rgb != null) {
color = new Color(Display.getCurrent(), rgb);
} else {
color = Display.getCurrent().getSystemColor(SWT.COLOR_LIST_FOREGROUND);
PapyrusParsersPlugin.logError("Undefined color '" + aName + "'");
}
fColorTable.put(aName, color);
}
return color;
}
/**
* Release all of the color resources held onto by the color provider.
*/
public void dispose() {
Iterator colors = fColorTable.values().iterator();
while (colors.hasNext()) {
((Color) colors.next()).dispose();
}
}
}
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