/*******************************************************************************
* Copyright (c) 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.ui.actions;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.dltk.core.IModelElement;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.php.internal.ui.PHPUIMessages;
import org.eclipse.php.internal.ui.PHPUiPlugin;
import org.eclipse.php.internal.ui.editor.PHPStructuredEditor;
import org.eclipse.php.internal.ui.util.ExceptionHandler;
import org.eclipse.ui.IWorkbenchSite;
public class RenamePHPElementAction extends SelectionDispatchAction {
protected PHPStructuredEditor fEditor;
public RenamePHPElementAction(IWorkbenchSite site) {
super(site);
}
public RenamePHPElementAction(PHPStructuredEditor editor) {
this(editor.getEditorSite());
fEditor = editor;
setEnabled(SelectionConverter.canOperateOn(fEditor));
}
// ---- Structured selection
// ------------------------------------------------
public void selectionChanged(IStructuredSelection selection) {
try {
if (selection.size() == 1) {
setEnabled(canEnable(selection));
return;
}
} catch (CoreException e) {
PHPUiPlugin.log(e);
}
setEnabled(false);
}
private static boolean canEnable(IStructuredSelection selection)
throws CoreException {
IModelElement element = getPHPElement(selection);
if (element == null)
return false;
return isRenameAvailable(element);
}
private static IModelElement getPHPElement(IStructuredSelection selection) {
if (selection.size() != 1)
return null;
Object first = selection.getFirstElement();
if (!(first instanceof IModelElement))
return null;
return (IModelElement) first;
}
public void run(IStructuredSelection selection) {
IModelElement element = getPHPElement(selection);
if (element == null) {
super.run(selection);
return;
}
try {
run(element);
} catch (CoreException e) {
ExceptionHandler.handle(e,
PHPUIMessages.RenamePHPElementAction_name,
PHPUIMessages.RenamePHPElementAction_exception);
}
}
// ---- text selection
// ------------------------------------------------------------
public void selectionChanged(ITextSelection selection) {
setEnabled(true);
}
public void run(ITextSelection selection) {
try {
IModelElement element = getPHPElement();
if (element != null && isRenameAvailable(element)) {
run(element);
return;
}
} catch (CoreException e) {
ExceptionHandler.handle(e,
PHPUIMessages.RenamePHPElementAction_name,
PHPUIMessages.RenamePHPElementAction_exception);
}
MessageDialog.openInformation(getShell(),
PHPUIMessages.RenamePHPElementAction_name,
PHPUIMessages.RenamePHPElementAction_not_available);
}
public boolean canRun() throws ModelException {
IModelElement element = getPHPElement();
if (element == null)
return false;
try {
return isRenameAvailable(element);
} catch (CoreException e) {
PHPUiPlugin.log(e);
}
return false;
}
private IModelElement getPHPElement() throws ModelException {
IModelElement[] elements = SelectionConverter.codeResolve(fEditor);
if (elements == null || elements.length != 1)
return null;
return elements[0];
}
// ---- helper methods
// -------------------------------------------------------------------
private void run(IModelElement element) throws CoreException {
if (!ActionUtils.isProcessable(getShell(), element))
return;
throw new RuntimeException(PHPUIMessages.RenamePHPElementAction_0);
}
private static boolean isRenameAvailable(IModelElement element)
throws CoreException {
// TODO do something here
return false;
}
}