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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/actions/FoldingActionGroup.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/actions/FoldingActionGroup.java
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+/*******************************************************************************
+ * 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.phpdt.internal.ui.actions;
+
+import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.source.projection.IProjectionListener;
+import org.eclipse.jface.text.source.projection.ProjectionViewer;
+import org.eclipse.ui.actions.ActionGroup;
+import org.eclipse.ui.editors.text.IFoldingCommandIds;
+import org.eclipse.ui.texteditor.ITextEditor;
+import org.eclipse.ui.texteditor.TextOperationAction;
+
+/**
+ * Groups the JDT folding actions.
+ * 
+ * @since 3.0
+ */
+public class FoldingActionGroup extends ActionGroup {
+	private ProjectionViewer fViewer;
+
+	private TextOperationAction fToggle;
+
+	private TextOperationAction fExpand;
+
+	private TextOperationAction fCollapse;
+
+	private TextOperationAction fExpandAll;
+
+	private IProjectionListener fProjectionListener;
+
+	/**
+	 * Creates a new projection action group for <code>editor</code>. If the
+	 * supplied viewer is not an instance of <code>ProjectionViewer</code>,
+	 * the action group is disabled.
+	 * 
+	 * @param editor
+	 *            the text editor to operate on
+	 * @param viewer
+	 *            the viewer of the editor
+	 */
+	public FoldingActionGroup(ITextEditor editor, ITextViewer viewer) {
+		if (viewer instanceof ProjectionViewer) {
+			fViewer = (ProjectionViewer) viewer;
+
+			fProjectionListener = new IProjectionListener() {
+
+				public void projectionEnabled() {
+					update();
+				}
+
+				public void projectionDisabled() {
+					update();
+				}
+			};
+
+			fViewer.addProjectionListener(fProjectionListener);
+
+			fToggle = new TextOperationAction(ActionMessages
+					.getResourceBundle(),
+					"Projection.Toggle.", editor, ProjectionViewer.TOGGLE, true); //$NON-NLS-1$
+			fToggle.setChecked(true);
+			fToggle.setActionDefinitionId(IFoldingCommandIds.FOLDING_TOGGLE);
+			editor.setAction("FoldingToggle", fToggle); //$NON-NLS-1$
+
+			fExpandAll = new TextOperationAction(
+					ActionMessages.getResourceBundle(),
+					"Projection.ExpandAll.", editor, ProjectionViewer.EXPAND_ALL, true); //$NON-NLS-1$
+			fExpandAll
+					.setActionDefinitionId(IFoldingCommandIds.FOLDING_EXPAND_ALL);
+			editor.setAction("FoldingExpandAll", fExpandAll); //$NON-NLS-1$
+
+			fExpand = new TextOperationAction(ActionMessages
+					.getResourceBundle(),
+					"Projection.Expand.", editor, ProjectionViewer.EXPAND, true); //$NON-NLS-1$
+			fExpand.setActionDefinitionId(IFoldingCommandIds.FOLDING_EXPAND);
+			editor.setAction("FoldingExpand", fExpand); //$NON-NLS-1$
+
+			fCollapse = new TextOperationAction(
+					ActionMessages.getResourceBundle(),
+					"Projection.Collapse.", editor, ProjectionViewer.COLLAPSE, true); //$NON-NLS-1$
+			fCollapse
+					.setActionDefinitionId(IFoldingCommandIds.FOLDING_COLLAPSE);
+			editor.setAction("FoldingCollapse", fCollapse); //$NON-NLS-1$
+		}
+	}
+
+	/**
+	 * Returns <code>true</code> if the group is enabled.
+	 * 
+	 * <pre>
+	 *  Invariant: isEnabled() &lt;=&gt; fViewer and all actions are != null.
+	 * </pre>
+	 * 
+	 * @return <code>true</code> if the group is enabled
+	 */
+	private boolean isEnabled() {
+		return fViewer != null;
+	}
+
+	/*
+	 * @see org.eclipse.ui.actions.ActionGroup#dispose()
+	 */
+	public void dispose() {
+		if (isEnabled()) {
+			fViewer.removeProjectionListener(fProjectionListener);
+			fViewer = null;
+		}
+		super.dispose();
+	}
+
+	/**
+	 * Updates the actions.
+	 */
+	protected void update() {
+		if (isEnabled()) {
+			fToggle.update();
+			fToggle.setChecked(fViewer.getProjectionAnnotationModel() != null);
+			fExpand.update();
+			fExpandAll.update();
+			fCollapse.update();
+		}
+	}
+
+	/**
+	 * Fills the menu with all folding actions.
+	 * 
+	 * @param manager
+	 *            the menu manager for the folding submenu
+	 */
+	public void fillMenu(IMenuManager manager) {
+		if (isEnabled()) {
+			update();
+			manager.add(fToggle);
+			manager.add(fExpandAll);
+			manager.add(fExpand);
+			manager.add(fCollapse);
+		}
+	}
+
+	/*
+	 * @see org.eclipse.ui.actions.ActionGroup#updateActionBars()
+	 */
+	public void updateActionBars() {
+		update();
+	}
+}