X-Git-Url: http://secure.phpeclipse.com

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/compare/CssMergeViewer.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/compare/CssMergeViewer.java
new file mode 100644
index 0000000..ba08f3c
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/compare/CssMergeViewer.java
@@ -0,0 +1,177 @@
+/*
+ * 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: CssMergeViewer.java,v 1.1 2004-09-02 18:11:49 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.compare;
+
+import net.sourceforge.phpeclipse.css.ui.CssUI;
+import net.sourceforge.phpeclipse.css.ui.internal.CssUIMessages;
+import net.sourceforge.phpeclipse.css.ui.internal.CssUIPreferences;
+import net.sourceforge.phpeclipse.css.ui.internal.text.CssSourceViewerConfiguration;
+import net.sourceforge.phpeclipse.css.ui.text.CssTextTools;
+
+import org.eclipse.compare.CompareConfiguration;
+import org.eclipse.compare.contentmergeviewer.TextMergeViewer;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.preference.PreferenceConverter;
+import org.eclipse.jface.text.IDocumentPartitioner;
+import org.eclipse.jface.text.TextViewer;
+import org.eclipse.jface.text.source.SourceViewer;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.widgets.Composite;
+
+/**
+ * Merge viewer for CSS files.
+ */
+public class CssMergeViewer extends TextMergeViewer {
+
+	// Constants ---------------------------------------------------------------
+
+	/**
+	 * Alias for the preference constant <code>EDITOR_BACKGROUND_COLOR</code>.
+	 */
+	private static final String PREFERENCE_BACKGROUND_COLOR =
+		CssUIPreferences.EDITOR_BACKGROUND_COLOR;
+
+	/**
+	 * Alias for the preference constant
+	 * <code>EDITOR_BACKGROUND_DEFAULT_COLOR</code>.
+	 */
+	private static final String PREFERENCE_BACKGROUND_DEFAULT_COLOR =
+		CssUIPreferences.EDITOR_BACKGROUND_DEFAULT_COLOR;
+
+	// Instance Variables ------------------------------------------------------
+
+	/**
+	 * The preference store.
+	 */
+	private IPreferenceStore preferenceStore;
+
+	/**
+	 * The listener for changes to the preference store. 
+	 */
+	private IPropertyChangeListener propertyChangeListener;
+
+	/**
+	 * The CSS text tools.
+	 */
+	private CssTextTools textTools;
+
+	// Constructors ------------------------------------------------------------
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param parent the parent control
+	 * @param style SWT style bits for top level composite of this viewer
+	 * @param configuration the configuration object
+	 */
+	public CssMergeViewer(Composite parent, int style,
+		CompareConfiguration configuration) {
+		super(parent, style, configuration);
+	}
+
+	// TextMergeViewer Implementation ------------------------------------------
+
+	/*
+	 * @see TextMergeViewer#configureTextViewer()
+	 */
+	protected void configureTextViewer(TextViewer textViewer) {
+
+		CssUI plugin = CssUI.getDefault();
+
+		this.preferenceStore = plugin.getPreferenceStore();
+		if (preferenceStore != null) {
+			 propertyChangeListener = new IPropertyChangeListener() {
+				public void propertyChange(PropertyChangeEvent event) {
+					handlePreferenceStoreChanged(event);
+				}
+			};
+			preferenceStore.addPropertyChangeListener(propertyChangeListener);
+		}
+
+		textTools = plugin.getTextTools();
+		if (textViewer instanceof SourceViewer) {
+			SourceViewer sourceViewer = (SourceViewer) textViewer;
+			sourceViewer.configure(new CssSourceViewerConfiguration(
+				textTools, preferenceStore));
+		}
+
+		updateBackgroundColor();
+	}
+
+	/*
+	 * @see TextMergeViewer#getDocumentPartitioner()
+	 */
+	protected IDocumentPartitioner getDocumentPartitioner() {
+		return textTools.createDocumentPartitioner();
+	}
+
+	/*
+	 * @see org.eclipse.compare.contentmergeviewer.ContentMergeViewer#getTitle()
+	 */
+	public String getTitle() {
+		return CssUIMessages.getString(
+			"CssMergeViewer.title"); //$NON-NLS-1$
+	}
+
+	/*
+	 * @see org.eclipse.jface.viewers.ContentViewer#handleDispose(org.eclipse.swt.events.DisposeEvent)
+	 */
+	protected void handleDispose(DisposeEvent event) {
+		if (propertyChangeListener != null) {
+			if (preferenceStore != null) {
+				preferenceStore.removePropertyChangeListener(
+					propertyChangeListener);
+			}
+			propertyChangeListener = null;
+		}
+		super.handleDispose(event);
+	}
+
+	// Private Methods ---------------------------------------------------------
+
+	/**
+	 * Called when the preference store notifies us about a change.
+	 * 
+	 * @param event the change event
+	 */
+	protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {
+		String p = event.getProperty();
+		if (PREFERENCE_BACKGROUND_COLOR.equals(p)
+		 || PREFERENCE_BACKGROUND_DEFAULT_COLOR.equals(p)) {
+			updateBackgroundColor();
+		} else if (textTools.affectsPresentation(event)) {
+			invalidateTextPresentation();
+		}
+	}
+
+	/**
+	 * Updates the background color of the merge viewer to the value set in the
+	 * preferences.
+	 */
+	private void updateBackgroundColor() {
+		boolean defaultBackgroundColor = preferenceStore.getBoolean(
+			PREFERENCE_BACKGROUND_DEFAULT_COLOR);
+		if (defaultBackgroundColor) {
+			setBackgroundColor(null);
+		} else {
+			RGB backgroundColor = PreferenceConverter.getColor(
+				preferenceStore, CssUIPreferences.EDITOR_BACKGROUND_COLOR);
+			setBackgroundColor(backgroundColor);
+		}
+	}
+
+}