org.eclipse.jst.jsp.ui.internal.java.refactoring.JSPRenameElementActionDelegate.java Source code

Introduction

Here is the source code for org.eclipse.jst.jsp.ui.internal.java.refactoring.JSPRenameElementActionDelegate.java

Source

/*******************************************************************************
 * Copyright (c) 2005 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
 *     
 *******************************************************************************/

package org.eclipse.jst.jsp.ui.internal.java.refactoring;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.ui.refactoring.RenameSupport;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jst.jsp.ui.internal.JSPUIMessages;
import org.eclipse.jst.jsp.ui.internal.Logger;
import org.eclipse.swt.widgets.Event;
import org.eclipse.ui.IActionDelegate2;
import org.eclipse.ui.IEditorActionDelegate;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.wst.sse.ui.internal.util.PlatformStatusLineUtil;

/**
 * An action delegate that launches JDT rename element wizard
 */
public class JSPRenameElementActionDelegate
        implements IEditorActionDelegate, IActionDelegate2, IViewActionDelegate {
    private IEditorPart fEditor;

    public void setActiveEditor(IAction action, IEditorPart targetEditor) {
        fEditor = targetEditor;
    }

    public void dispose() {
        // nulling out just in case
        fEditor = null;
    }

    public void init(IAction action) {
        if (action != null) {
            action.setText(JSPUIMessages.RenameElement_label);
            action.setToolTipText(JSPUIMessages.RenameElement_label);
        }
    }

    public void runWithEvent(IAction action, Event event) {
        run(action);
    }

    public void run(IAction action) {
        IJavaElement element = getSelectedElement();
        if (element != null) {
            RenameSupport renameSupport = null;
            try {
                switch (element.getElementType()) {
                case IJavaElement.TYPE:
                    renameSupport = RenameSupport.create((IType) element, element.getElementName(),
                            RenameSupport.UPDATE_REFERENCES);
                    break;
                case IJavaElement.METHOD:
                    renameSupport = RenameSupport.create((IMethod) element, element.getElementName(),
                            RenameSupport.UPDATE_REFERENCES);
                    break;
                case IJavaElement.PACKAGE_FRAGMENT:
                    renameSupport = RenameSupport.create((IPackageFragment) element, element.getElementName(),
                            RenameSupport.UPDATE_REFERENCES);
                    break;
                }
                if (renameSupport != null) {
                    renameSupport.openDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
                    PlatformStatusLineUtil.clearStatusLine();
                }
            } catch (CoreException e) {
                Logger.logException(e);
            }
        } else {
            PlatformStatusLineUtil.displayErrorMessage(JSPUIMessages.JSPRenameElementAction_0); //$NON-NLS-1$
            PlatformStatusLineUtil.addOneTimeClearListener();
        }
    }

    public void selectionChanged(IAction action, ISelection selection) {
        PlatformStatusLineUtil.clearStatusLine();
    }

    public void init(IViewPart view) {
        // do nothing
    }

    private IJavaElement getSelectedElement() {
        IJavaElement element = null;
        if (fEditor instanceof ITextEditor) {
            IJavaElement[] elements = JSPJavaSelectionProvider.getSelection((ITextEditor) fEditor);
            if (elements.length == 1)
                element = elements[0];
        }
        return element;
    }
}