com.google.appraise.eclipse.ui.editor.CommitAttributeEditor.java Source code

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Here is the source code for com.google.appraise.eclipse.ui.editor.CommitAttributeEditor.java

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/*******************************************************************************
 * Copyright (c) 2015 Google 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:
 *     Scott McMaster - initial implementation
 *******************************************************************************/
package com.google.appraise.eclipse.ui.editor;

import com.google.appraise.eclipse.core.AppraisePluginUtils;
import com.google.appraise.eclipse.ui.AppraiseUiPlugin;

import org.eclipse.egit.ui.internal.commit.CommitEditor;
import org.eclipse.egit.ui.internal.commit.RepositoryCommit;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.mylyn.tasks.core.data.TaskAttribute;
import org.eclipse.mylyn.tasks.core.data.TaskDataModel;
import org.eclipse.mylyn.tasks.ui.editors.AbstractAttributeEditor;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint.ColumnSpan;
import org.eclipse.mylyn.tasks.ui.editors.LayoutHint.RowSpan;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.forms.widgets.FormToolkit;

import java.io.IOException;

/**
 * Custom attribute editor for the review commit. Handles jumping to the commit
 * in the Eclipse commit editor.
 */
public class CommitAttributeEditor extends AbstractAttributeEditor {
    private Link link;

    public CommitAttributeEditor(TaskDataModel manager, TaskAttribute taskAttribute) {
        super(manager, taskAttribute);
        setLayoutHint(new LayoutHint(RowSpan.SINGLE, ColumnSpan.SINGLE));
    }

    @Override
    public void createControl(final Composite parent, FormToolkit toolkit) {
        link = new Link(parent, SWT.BORDER);
        link.setText("<a>" + getValue() + "</a>");
        link.addListener(SWT.Selection, new Listener() {
            @Override
            public void handleEvent(Event event) {
                try {
                    RepositoryCommit commit = getCommit();
                    if (commit != null) {
                        CommitEditor.openQuiet(commit);
                    } else {
                        MessageDialog alert = new MessageDialog(parent.getShell(), "Oops", null,
                                "Commit " + getValue() + " not found", MessageDialog.ERROR, new String[] { "OK" },
                                0);
                        alert.open();
                    }
                } catch (IOException e) {
                    AppraiseUiPlugin.logError("Error reading commit " + getValue(), e);
                }
            }
        });
        setControl(link);
    }

    public String getValue() {
        return getAttributeMapper().getValue(getTaskAttribute());
    }

    private RepositoryCommit getCommit() throws IOException {
        Repository repository = AppraisePluginUtils.getGitRepoForRepository(this.getModel().getTaskRepository());
        try (RevWalk revWalk = new RevWalk(repository)) {
            RevCommit commit = revWalk.parseCommit(ObjectId.fromString(getValue()));
            if (commit != null) {
                return new RepositoryCommit(repository, commit);
            }
        } catch (MissingObjectException e) {
            AppraiseUiPlugin.logError("Commit not found " + getValue(), e);
        } catch (IncorrectObjectTypeException e) {
            AppraiseUiPlugin.logError("Not a commit " + getValue(), e);
        }
        return null;
    }
}