org.eclipse.tm.te.tcf.filesystem.internal.handlers.UpdateHandler.java Source code

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Here is the source code for org.eclipse.tm.te.tcf.filesystem.internal.handlers.UpdateHandler.java

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/*******************************************************************************
 * Copyright (c) 2011 Wind River Systems, Inc. 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:
 * Wind River Systems - initial API and implementation
 * William Chen (Wind River)- [345552] Edit the remote files with a proper editor
 *******************************************************************************/
package org.eclipse.tm.te.tcf.filesystem.internal.handlers;

import java.io.File;

import org.eclipse.compare.CompareUI;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.tm.te.tcf.filesystem.internal.compare.LocalTypedElement;
import org.eclipse.tm.te.tcf.filesystem.internal.compare.MergeEditorInput;
import org.eclipse.tm.te.tcf.filesystem.internal.compare.RemoteTypedElement;
import org.eclipse.tm.te.tcf.filesystem.internal.exceptions.TCFException;
import org.eclipse.tm.te.tcf.filesystem.internal.nls.Messages;
import org.eclipse.tm.te.tcf.filesystem.model.CacheState;
import org.eclipse.tm.te.tcf.filesystem.model.FSTreeNode;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * The handler to update the local file's content with the latest of its remote file.
 *
 */
public class UpdateHandler extends AbstractHandler {

    /*
     * (non-Javadoc)
     * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getCurrentSelectionChecked(event);
        FSTreeNode node = (FSTreeNode) selection.getFirstElement();
        try {
            StateManager.getInstance().refreshState(node);
        } catch (TCFException e) {
            Shell parent = HandlerUtil.getActiveShell(event);
            MessageDialog.openError(parent, Messages.StateManager_RefreshFailureTitle, e.getLocalizedMessage());
            return null;
        }
        Shell parent = HandlerUtil.getActiveShell(event);
        File file = CacheManager.getInstance().getCacheFile(node);
        if (file.exists()) {
            CacheState state = StateManager.getInstance().getCacheState(node);
            switch (state) {
            case conflict:
                String title = Messages.UpdateHandler_StateChangedDialogTitle;
                String message = NLS.bind(Messages.UpdateHandler_StateChangedMessage, node.name);
                MessageDialog msgDialog = new MessageDialog(parent, title, null, message, MessageDialog.QUESTION,
                        new String[] { Messages.UpdateHandler_Merge, Messages.UpdateHandler_UpdateAnyway,
                                Messages.UpdateHandler_Cancel },
                        0);
                int index = msgDialog.open();
                if (index == 0) {
                    LocalTypedElement local = new LocalTypedElement(node);
                    RemoteTypedElement remote = new RemoteTypedElement(node);
                    IWorkbenchPage page = HandlerUtil.getActiveSite(event).getPage();
                    MergeEditorInput input = new MergeEditorInput(local, remote, page);
                    CompareUI.openCompareDialog(input);
                } else if (index == 1) {
                    CacheManager.getInstance().download(node);
                }
                break;
            case modified:
                break;
            case consistent:
                break;
            case outdated:
                CacheManager.getInstance().download(node);
                break;
            }
        } else {
            CacheManager.getInstance().download(node);
        }
        return null;
    }
}