| /******************************************************************************* |
| * Copyright (c) 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.pde.internal.ui.editor.text; |
| |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.text.TextAttribute; |
| import org.eclipse.jface.text.rules.BufferedRuleBasedScanner; |
| import org.eclipse.jface.text.rules.Token; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| import org.eclipse.pde.internal.ui.PDEPlugin; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| |
| public abstract class BasePDEScanner extends BufferedRuleBasedScanner { |
| |
| private IColorManager fColorManager; |
| |
| protected BasePDEScanner() { |
| } |
| |
| public void setColorManager(IColorManager manager) { |
| fColorManager = manager; |
| } |
| |
| public BasePDEScanner(IColorManager manager) { |
| fColorManager = manager; |
| initialize(); |
| } |
| |
| public void adaptToPreferenceChange(PropertyChangeEvent event) { |
| String property = event.getProperty(); |
| if (affectsTextPresentation(property)) { |
| Token token = getTokenAffected(event); |
| if (property.endsWith(IPDEColorConstants.P_BOLD_SUFFIX)) |
| adaptToStyleChange(event, token, SWT.BOLD); |
| else if (property.endsWith(IPDEColorConstants.P_ITALIC_SUFFIX)) |
| adaptToStyleChange(event, token, SWT.ITALIC); |
| else |
| adaptToColorChange(event, token); |
| } |
| } |
| |
| public abstract boolean affectsTextPresentation(String property); |
| |
| protected abstract Token getTokenAffected(PropertyChangeEvent event); |
| |
| protected abstract void initialize(); |
| |
| protected void adaptToStyleChange(PropertyChangeEvent event, Token token, int styleAttribute) { |
| if (token == null) |
| return; |
| |
| boolean eventValue = false; |
| Object value = event.getNewValue(); |
| if (value instanceof Boolean) |
| eventValue = ((Boolean) value).booleanValue(); |
| |
| TextAttribute attr = (TextAttribute) token.getData(); |
| boolean activeValue = (attr.getStyle() & styleAttribute) == styleAttribute; |
| if (activeValue != eventValue) { |
| Color foreground = attr.getForeground(); |
| Color background = attr.getBackground(); |
| int style = eventValue ? attr.getStyle() | styleAttribute : attr.getStyle() & ~styleAttribute; |
| token.setData(new TextAttribute(foreground, background, style)); |
| } |
| } |
| |
| protected void adaptToColorChange(PropertyChangeEvent event, Token token) { |
| TextAttribute attr = (TextAttribute) token.getData(); |
| token.setData(new TextAttribute(fColorManager.getColor(event.getProperty()), attr.getBackground(), attr.getStyle())); |
| } |
| |
| protected TextAttribute createTextAttribute(String property) { |
| return createTextAttribute(fColorManager, property); |
| } |
| |
| protected static TextAttribute createTextAttribute(IColorManager manager, String property) { |
| Color color = manager.getColor(property); |
| int style = SWT.NORMAL; |
| IPreferenceStore store = PDEPlugin.getDefault().getPreferenceStore(); |
| if (store.getBoolean(property + IPDEColorConstants.P_BOLD_SUFFIX)) |
| style |= SWT.BOLD; |
| if (store.getBoolean(property + IPDEColorConstants.P_ITALIC_SUFFIX)) |
| style |= SWT.ITALIC; |
| return new TextAttribute(color, null, style); |
| } |
| |
| } |