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

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/editor/ShowSelectedElementOnlyAction.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/editor/ShowSelectedElementOnlyAction.java
new file mode 100644
index 0000000..ab1e80f
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/editor/ShowSelectedElementOnlyAction.java
@@ -0,0 +1,150 @@
+/*
+ * 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: ShowSelectedElementOnlyAction.java,v 1.1 2004-09-02 18:11:50 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.editor;
+
+import net.sourceforge.phpeclipse.css.ui.CssUI;
+import net.sourceforge.phpeclipse.css.ui.internal.CssUIMessages;
+import net.sourceforge.phpeclipse.css.ui.internal.CssUIPreferences;
+
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.ui.texteditor.ITextEditor;
+import org.eclipse.ui.texteditor.TextEditorAction;
+
+/**
+ * A toolbar action which toggles the presentation model of the connected text 
+ * editor. The editor shows either the highlight range only or always the whole 
+ * document.
+ * 
+ * <p>
+ *  This class is an implementation for the retargetable action 
+ *  <code>TOGGLE_SHOW_SELECTED_ELEMENT_ONLY</code> provided by the platform.
+ * </p>
+ * 
+ * @see org.eclipse.ui.texteditor.ITextEditorActionDefinitionIds#TOGGLE_SHOW_SELECTED_ELEMENT_ONLY
+ */
+public class ShowSelectedElementOnlyAction extends TextEditorAction
+	implements IPropertyChangeListener {
+
+	// Instance Variables ------------------------------------------------------
+
+	private IPreferenceStore store;
+
+	// Constructors ------------------------------------------------------------
+
+	/**
+	 * Constructor.
+	 */
+	public ShowSelectedElementOnlyAction() {
+		super(CssUIMessages.getResourceBundle(),
+			"CssEditor.showSelectedElementOnly.", null); //$NON-NLS-1$
+		store = CssUI.getDefault().getPreferenceStore();
+		update();
+	}
+
+	// TextEditor Implementation -----------------------------------------------
+
+	/*
+	 * @see org.eclipse.jface.action.IAction#run()
+	 */
+	public void run() {
+		ITextEditor editor = getTextEditor();
+		if (editor != null) {
+			IRegion highlightRange = editor.getHighlightRange();
+			editor.resetHighlightRange();
+			boolean show = !editor.showsHighlightRangeOnly();
+			setChecked(show);
+			editor.showHighlightRangeOnly(show);
+			if (highlightRange != null) {
+				editor.setHighlightRange(highlightRange.getOffset(),
+					highlightRange.getLength(), true);
+			}
+			store.removePropertyChangeListener(this);
+			store.setValue(
+				CssUIPreferences.EDITOR_SHOW_SELECTED_ELEMENT_ONLY, show);
+			store.addPropertyChangeListener(this);
+		}
+	}
+
+	/*
+	 * @see TextEditorAction#setEditor(ITextEditor)
+	 */
+	public void setEditor(ITextEditor editor) {
+		super.setEditor(editor);
+		if (editor != null) {
+			if (store == null) {
+				store = CssUI.getDefault().getPreferenceStore();
+				store.addPropertyChangeListener(this);
+			}
+			synchronizeWithPreference(editor);
+		} else if (store != null) {
+			store.removePropertyChangeListener(this);
+			store = null;
+		}
+		update();
+	}
+	
+	/*
+	 * @see org.eclipse.ui.texteditor.IUpdate#update()
+	 */
+	public void update() {
+		ITextEditor editor = getTextEditor();
+		if (editor != null) {
+			setChecked(getTextEditor().showsHighlightRangeOnly());
+			setEnabled(true);
+		} else {
+			setEnabled(false);
+		}
+	}
+
+	// IPropertyChangeListener Implementation ----------------------------------
+
+	/*
+	 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
+	 */
+	public void propertyChange(PropertyChangeEvent event) {
+		String p = event.getProperty();
+		if (CssUIPreferences.EDITOR_SHOW_SELECTED_ELEMENT_ONLY.equals(p)) {
+			synchronizeWithPreference(getTextEditor());
+		}
+	}
+
+	// Private Methods ---------------------------------------------------------
+
+	/**
+	 * Synchronizes the appearance of the editor with what the preference store
+	 * contains.
+	 * 
+	 * @param editor the editor to synchronize
+	 */
+	private void synchronizeWithPreference(ITextEditor editor) {
+		if (editor != null) {
+			boolean show = this.store.getBoolean(
+				CssUIPreferences.EDITOR_SHOW_SELECTED_ELEMENT_ONLY);
+			setChecked(show);
+			if (show != editor.showsHighlightRangeOnly()) {
+				IRegion highlightRange = editor.getHighlightRange();
+				editor.resetHighlightRange();
+				editor.showHighlightRangeOnly(show);
+				if (highlightRange != null) {
+					editor.setHighlightRange(highlightRange.getOffset(),
+						highlightRange.getLength(), true);
+				}
+			}
+		}
+	}
+
+}