org.eclipse.team.internal.ccvs.ui.actions.EditorsAction.java Source code

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Here is the source code for org.eclipse.team.internal.ccvs.ui.actions.EditorsAction.java

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/*******************************************************************************
 * Copyright (c) 2000, 2006 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:
 *     CSC - Intial implementation
 *     IBM Corporation - ongoing maintenance
 *******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.actions;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.window.Window;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.team.core.Team;
import org.eclipse.team.internal.ccvs.core.*;
import org.eclipse.team.internal.ccvs.ui.*;
import org.eclipse.team.internal.ccvs.ui.actions.WorkspaceAction.IProviderAction;

/**
 * This Action gets the <code>EditorsInfo[]</code>
 * It is used by the <code>ShowEditorAction</code> 
 * and <code>ShowEditorAction</code>.
 * 
 * @author <a href="mailto:gregor.kohlwes@csc.com,kohlwes@gmx.net">Gregor
 * Kohlwes</a>
 * 
 */
public class EditorsAction implements IProviderAction, IRunnableWithProgress {
    EditorsInfo[] f_editorsInfo = new EditorsInfo[0];
    CVSTeamProvider f_provider;
    IResource[] f_resources;

    public EditorsAction() {
    }

    public EditorsAction(CVSTeamProvider provider, IResource[] resources) {
        f_provider = provider;
        f_resources = resources;
    }

    /**
     * @see org.eclipse.team.internal.ccvs.ui.actions.WorkspaceAction.IProviderAction#execute(org.eclipse.team.internal.ccvs.core.CVSTeamProvider, org.eclipse.core.resources.IResource, org.eclipse.core.runtime.IProgressMonitor)
     */
    public IStatus execute(CVSTeamProvider provider, IResource[] resources, IProgressMonitor monitor)
            throws CVSException {
        f_editorsInfo = provider.editors(resources, monitor);
        return Team.OK_STATUS;
    }

    public boolean promptToEdit(Shell shell) {
        if (!isEmpty()) {
            final EditorsDialog view = new EditorsDialog(shell, f_editorsInfo);
            // Open the dialog using a sync exec (there are no guarentees that we
            // were called from the UI thread
            CVSUIPlugin.openDialog(shell, new CVSUIPlugin.IOpenableInShell() {
                public void open(Shell shell) {
                    view.open();
                }
            }, CVSUIPlugin.PERFORM_SYNC_EXEC);
            return (view.getReturnCode() == Window.OK);
        }
        return true;
    }

    /**
     * Contact the server to determine if there are any editors on the associatd files.
     * 
     * @see org.eclipse.jface.operation.IRunnableWithProgress#run(org.eclipse.core.runtime.IProgressMonitor)
     */
    public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
        if (f_provider == null || f_resources == null) {
            throw new InvocationTargetException(new RuntimeException(NLS.bind(
                    CVSUIMessages.EditorsAction_classNotInitialized, new String[] { this.getClass().getName() })));
        }
        try {
            execute(f_provider, f_resources, monitor);
        } catch (CVSException e) {
            throw new InvocationTargetException(e);
        }
    }

    /**
     * Returns the f_editorsInfo.
     * @return EditorsInfo[]
     */
    public EditorsInfo[] getEditorsInfo() {
        return f_editorsInfo;
    }

    /**
     * Indicates whether there are editors of any of the associated files.
     * The <code>run(IProgressMonitor)</code> must be invoked first to 
     * fetch any editors from the server.
     * @return boolean
     */
    public boolean isEmpty() {
        return f_editorsInfo.length == 0;
    }

}