--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2002 International Business Machines Corp. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v0.5
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ ******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.actions;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.text.ITextSelection;
+//incastrix
+//import org.eclipse.jface.text.Assert;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IWorkbenchSite;
+
+/**
+ * Action that dispatches the <code>IAction#run()</code> and the
+ * <code>ISelectionChangedListener#selectionChanged</code> according to the
+ * type of the selection.
+ *
+ * <ul>
+ * <li>if selection is of type <code>ITextSelection</code> then
+ * <code>run(ITextSelection)</code> and
+ * <code>selectionChanged(ITextSelection)</code> is called.</li>
+ * <li>if selection is of type <code>IStructuredSelection</code> then
+ * <code>run(IStructuredSelection)</code> and <code>
+ * selectionChanged(IStructuredSelection)</code>
+ * is called.</li>
+ * <li>default is to call <code>run(ISelection)</code> and <code>
+ * selectionChanged(ISelection)</code>.</li>
+ * </ul>
+ *
+ * <p>
+ * Note: This class is not intended to be subclassed outside the JDT UI plugin.
+ * </p>
+ *
+ * @since 2.0
+ */
+public abstract class SelectionDispatchAction extends Action implements
+ ISelectionChangedListener {
+
+ private IWorkbenchSite fSite;
+
+ /**
+ * Creates a new action with no text and no image.
+ * <p>
+ * Configure the action later using the set methods.
+ * </p>
+ *
+ * @param site
+ * the site this action is working on
+ */
+ protected SelectionDispatchAction(IWorkbenchSite site) {
+ Assert.isNotNull(site);
+ fSite = site;
+ }
+
+ /**
+ * Returns the site owning this action.
+ *
+ * @return the site owning this action
+ */
+ public IWorkbenchSite getSite() {
+ return fSite;
+ }
+
+ /**
+ * Returns the selection provided by the site owning this action.
+ *
+ * @return the site's selection
+ */
+ public ISelection getSelection() {
+ return getSelectionProvider().getSelection();
+ }
+
+ /**
+ * Returns the shell provided by the site owning this action.
+ *
+ * @return the site's shell
+ */
+ public Shell getShell() {
+ return fSite.getShell();
+ }
+
+ /**
+ * Returns the selection provider managed by the site owning this action.
+ *
+ * @return the site's selection provider
+ */
+ public ISelectionProvider getSelectionProvider() {
+ return fSite.getSelectionProvider();
+ }
+
+ /**
+ * Updates the action's enablement state according to the given selection.
+ * This default implementation calls one of the
+ * <code>selectionChanged</code> methods depending on the type of the
+ * passed selection.
+ *
+ * @param selection
+ * the selection this action is working on
+ */
+ public void update(ISelection selection) {
+ dispatchSelectionChanged(selection);
+ }
+
+ /**
+ * Notifies this action that the given structured selection has changed.
+ * This default implementation calls
+ * <code>selectionChanged(ISelection selection)</code>.
+ *
+ * @param selection
+ * the new selection
+ */
+ protected void selectionChanged(IStructuredSelection selection) {
+ selectionChanged((ISelection) selection);
+ }
+
+ /**
+ * Executes this actions with the given structured selection. This default
+ * implementation calls <code>run(ISelection selection)</code>.
+ */
+ protected void run(IStructuredSelection selection) {
+ run((ISelection) selection);
+ }
+
+ /**
+ * Notifies this action that the given text selection has changed. This
+ * default implementation calls
+ * <code>selectionChanged(ISelection selection)</code>.
+ *
+ * @param selection
+ * the new selection
+ */
+ protected void selectionChanged(ITextSelection selection) {
+ selectionChanged((ISelection) selection);
+ }
+
+ /**
+ * Executes this actions with the given text selection. This default
+ * implementation calls <code>run(ISelection selection)</code>.
+ */
+ protected void run(ITextSelection selection) {
+ run((ISelection) selection);
+ }
+
+ /**
+ * Notifies this action that the given selection has changed. This default
+ * implementation sets the action's enablement state to <code>false</code>.
+ *
+ * @param selection
+ * the new selection
+ */
+ protected void selectionChanged(ISelection selection) {
+ setEnabled(false);
+ }
+
+ /**
+ * Executes this actions with the given selection. This default
+ * implementation does nothing.
+ */
+ protected void run(ISelection selection) {
+ }
+
+ /*
+ * (non-Javadoc) Method declared on IAction.
+ */
+ public void run() {
+ dispatchRun(getSelection());
+ }
+
+ /*
+ * (non-Javadoc) Method declared on ISelectionChangedListener.
+ */
+ public void selectionChanged(SelectionChangedEvent event) {
+ dispatchSelectionChanged(event.getSelection());
+ }
+
+ private void dispatchSelectionChanged(ISelection selection) {
+ if (selection instanceof IStructuredSelection) {
+ selectionChanged((IStructuredSelection) selection);
+ } else if (selection instanceof ITextSelection) {
+ selectionChanged((ITextSelection) selection);
+ } else {
+ selectionChanged(selection);
+ }
+ }
+
+ private void dispatchRun(ISelection selection) {
+ if (selection instanceof IStructuredSelection) {
+ run((IStructuredSelection) selection);
+ } else if (selection instanceof ITextSelection) {
+ run((ITextSelection) selection);
+ } else {
+ run(selection);
+ }
+ }
+}
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