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

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/phpeditor/TogglePresentationAction.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/phpeditor/TogglePresentationAction.java
new file mode 100644
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+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/phpeditor/TogglePresentationAction.java
@@ -0,0 +1,140 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpeclipse.phpeditor;
+
+import net.sourceforge.phpdt.internal.ui.PHPUiImages;
+import net.sourceforge.phpdt.ui.PreferenceConstants;
+import net.sourceforge.phpdt.ui.actions.PHPEditorActionDefinitionIds;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+import net.sourceforge.phpeclipse.ui.WebUI;
+
+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.
+ */
+public class TogglePresentationAction extends TextEditorAction implements
+		IPropertyChangeListener {
+
+	private IPreferenceStore fStore;
+
+	/**
+	 * Constructs and updates the action.
+	 */
+	public TogglePresentationAction() {
+		super(PHPEditorMessages.getResourceBundle(),
+				"TogglePresentation.", null); //$NON-NLS-1$
+		PHPUiImages.setToolImageDescriptors(this, "segment_edit.gif"); //$NON-NLS-1$
+		setToolTipText(PHPEditorMessages
+				.getString("TogglePresentation.tooltip")); //$NON-NLS-1$
+		setActionDefinitionId(PHPEditorActionDefinitionIds.TOGGLE_PRESENTATION);
+		// WorkbenchHelp.setHelp(this,
+		// IJavaHelpContextIds.TOGGLE_PRESENTATION_ACTION);
+		update();
+	}
+
+	/*
+	 * @see IAction#actionPerformed
+	 */
+	public void run() {
+
+		ITextEditor editor = getTextEditor();
+		if (editor == null)
+			return;
+
+		IRegion remembered = editor.getHighlightRange();
+		editor.resetHighlightRange();
+
+		boolean showAll = !editor.showsHighlightRangeOnly();
+		setChecked(showAll);
+
+		editor.showHighlightRangeOnly(showAll);
+		if (remembered != null)
+			editor.setHighlightRange(remembered.getOffset(), remembered
+					.getLength(), true);
+
+		fStore.removePropertyChangeListener(this);
+		fStore.setValue(PreferenceConstants.EDITOR_SHOW_SEGMENTS, showAll);
+		fStore.addPropertyChangeListener(this);
+	}
+
+	/*
+	 * @see TextEditorAction#update
+	 */
+	public void update() {
+		ITextEditor editor = getTextEditor();
+		boolean checked = (editor != null && editor.showsHighlightRangeOnly());
+		setChecked(checked);
+		setEnabled(editor != null);
+	}
+
+	/*
+	 * @see TextEditorAction#setEditor(ITextEditor)
+	 */
+	public void setEditor(ITextEditor editor) {
+
+		super.setEditor(editor);
+
+		if (editor != null) {
+
+			if (fStore == null) {
+				fStore = WebUI.getDefault().getPreferenceStore();
+				fStore.addPropertyChangeListener(this);
+			}
+			synchronizeWithPreference(editor);
+
+		} else if (fStore != null) {
+			fStore.removePropertyChangeListener(this);
+			fStore = null;
+		}
+
+		update();
+	}
+
+	/**
+	 * Synchronizes the appearance of the editor with what the preference store
+	 * tells him.
+	 */
+	private void synchronizeWithPreference(ITextEditor editor) {
+
+		if (editor == null)
+			return;
+
+		boolean showSegments = fStore
+				.getBoolean(PreferenceConstants.EDITOR_SHOW_SEGMENTS);
+		setChecked(showSegments);
+
+		if (editor.showsHighlightRangeOnly() != showSegments) {
+			IRegion remembered = editor.getHighlightRange();
+			editor.resetHighlightRange();
+			editor.showHighlightRangeOnly(showSegments);
+			if (remembered != null)
+				editor.setHighlightRange(remembered.getOffset(), remembered
+						.getLength(), true);
+		}
+	}
+
+	/*
+	 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
+	 */
+	public void propertyChange(PropertyChangeEvent event) {
+		if (event.getProperty()
+				.equals(PreferenceConstants.EDITOR_SHOW_SEGMENTS))
+			synchronizeWithPreference(getTextEditor());
+	}
+}