com.vectrace.MercurialEclipse.synchronize.actions.SetDefaultChangesetSynchronizeAction.java Source code

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Here is the source code for com.vectrace.MercurialEclipse.synchronize.actions.SetDefaultChangesetSynchronizeAction.java

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/*******************************************************************************
 * Copyright (c) 2004, 2006 Subclipse project 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:
 *     Subclipse project committers - initial API and implementation
 *     Bastian Doetsch            - Adaption to Mercurial
 *     Andrei Loskutov - bug fixes
 *******************************************************************************/
package com.vectrace.MercurialEclipse.synchronize.actions;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.compare.structuremergeviewer.IDiffElement;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.viewers.ContentViewer;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.team.ui.synchronize.ISynchronizePageConfiguration;
import org.eclipse.team.ui.synchronize.SynchronizeModelAction;
import org.eclipse.team.ui.synchronize.SynchronizeModelOperation;
import org.eclipse.ui.navigator.CommonViewer;

import com.vectrace.MercurialEclipse.MercurialEclipsePlugin;
import com.vectrace.MercurialEclipse.model.GroupedUncommittedChangeSet;
import com.vectrace.MercurialEclipse.model.WorkingChangeSet;
import com.vectrace.MercurialEclipse.synchronize.cs.HgChangeSetContentProvider;
import com.vectrace.MercurialEclipse.synchronize.cs.HgChangeSetContentProvider.IUncommitted;
import com.vectrace.MercurialEclipse.synchronize.cs.UncommittedChangesetGroup;

/**
 * Get action that appears in the synchronize view. It's main purpose is to
 * filter the selection and delegate its execution to the get operation.
 */
public class SetDefaultChangesetSynchronizeAction extends SynchronizeModelAction {

    public static final String ID = "hg.setDefaultChangeset";

    public SetDefaultChangesetSynchronizeAction(String text, ISynchronizePageConfiguration configuration,
            ISelectionProvider selectionProvider) {
        super(text, configuration, selectionProvider);
        setId(ID);
        setImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("elcl16/uncommitted_cs.gif",
                "ovr/pinned_ovr.gif", IDecoration.TOP_RIGHT));
    }

    @Override
    protected SynchronizeModelOperation getSubscriberOperation(final ISynchronizePageConfiguration configuration,
            IDiffElement[] elements) {
        IStructuredSelection sel = getStructuredSelection();
        // it's guaranteed that we have exact one element
        final Object object = sel.getFirstElement();
        if (object instanceof WorkingChangeSet) {
            return new SynchronizeModelOperation(configuration, elements) {

                public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
                    Viewer viewer = configuration.getPage().getViewer();
                    if (!(viewer instanceof ContentViewer)) {
                        return;
                    }
                    CommonViewer commonViewer = (CommonViewer) viewer;
                    final HgChangeSetContentProvider csProvider = OpenAction
                            .getProvider(commonViewer.getNavigatorContentService());
                    IUncommitted uc = csProvider.getUncommittedEntry();

                    if (uc instanceof UncommittedChangesetGroup) {
                        ((UncommittedChangesetGroup) uc).makeDefault((GroupedUncommittedChangeSet) object);
                    } else {
                        MercurialEclipsePlugin.logError(
                                "Unexped invocation of SetDefaultChangesetSynchronizeAction",
                                new IllegalStateException());
                    }
                }

            };
        }
        return null;
    }

    @Override
    protected boolean updateSelection(IStructuredSelection selection) {
        boolean updateSelection = super.updateSelection(selection);
        if (!updateSelection) {
            Object[] array = selection.toArray();
            if (selection.size() != 1) {
                return false;
            }
            return isSupported(array[0]);
        }
        return updateSelection;
    }

    private static boolean isSupported(Object object) {
        return object instanceof WorkingChangeSet;
    }

}