org.eclipse.egit.ui.internal.history.command.EditHandler.java Source code

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Here is the source code for org.eclipse.egit.ui.internal.history.command.EditHandler.java

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/*******************************************************************************
 *  Copyright (c) 2014 Maik Schreiber 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:
 *    Maik Schreiber - initial implementation
 *******************************************************************************/
package org.eclipse.egit.ui.internal.history.command;

import java.io.IOException;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.core.CommitUtil;
import org.eclipse.egit.core.internal.job.RuleUtil;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.history.GitHistoryPage;
import org.eclipse.egit.ui.internal.rebase.RebaseInteractiveView;
import org.eclipse.egit.ui.internal.staging.StagingView;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.progress.UIJob;

/** Checks out a commit (in interactive rebase mode) for editing. */
public class EditHandler extends AbstractHistoryCommandHandler {
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        final Repository repository = getRepository(event);
        final RevCommit commit = getSelectedCommit(event);
        final Shell shell = HandlerUtil.getActiveShellChecked(event);

        try {
            if (!CommitUtil.isCommitInCurrentBranch(commit, repository)) {
                MessageDialog.openError(shell, UIText.EditHandler_Error_Title,
                        UIText.EditHandler_CommitNotOnCurrentBranch);
                return null;
            }
        } catch (IOException e) {
            throw new ExecutionException(UIText.EditHandler_ErrorCheckingIfCommitIsOnCurrentBranch, e);
        }

        boolean success = org.eclipse.egit.ui.internal.commit.command.EditHandler.editCommit(commit, repository,
                shell);
        if (success)
            openStagingAndRebaseInteractiveViews(repository);

        return null;
    }

    private void openStagingAndRebaseInteractiveViews(final Repository repository) {
        Job job = new UIJob(UIText.EditHandler_OpenStagingAndRebaseInteractiveViews) {
            @Override
            public IStatus runInUIThread(IProgressMonitor monitor) {
                try {
                    IWorkbenchPage workbenchPage = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
                            .getActivePage();
                    final StagingView stagingView = (StagingView) workbenchPage.showView(StagingView.VIEW_ID);
                    stagingView.reload(repository);
                    stagingView.setAmending(true);
                    RebaseInteractiveView rebaseView = (RebaseInteractiveView) workbenchPage
                            .showView(RebaseInteractiveView.VIEW_ID);
                    rebaseView.setInput(repository);
                } catch (PartInitException e) {
                    Activator.logError(e.getMessage(), e);
                }
                return Status.OK_STATUS;
            }
        };
        job.setRule(RuleUtil.getRule(repository));
        job.setUser(true);
        job.schedule();
    }

    @Override
    public boolean isEnabled() {
        GitHistoryPage page = getPage();
        if (page == null)
            return false;
        IStructuredSelection selection = getSelection(page);
        if (selection.size() != 1)
            return false;
        Repository repository = getRepository(page);
        if (repository.getRepositoryState() != RepositoryState.SAFE)
            return false;
        RevCommit commit = (RevCommit) selection.getFirstElement();
        return (commit.getParentCount() == 1);
    }
}