org.eclipse.egit.ui.internal.dialogs.CommitSelectDialog.java Source code

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Here is the source code for org.eclipse.egit.ui.internal.dialogs.CommitSelectDialog.java

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/*******************************************************************************
 * Copyright (C) 2012, Mathias Kinzler <mathias.kinzler@sap.com>
 * and other copyright owners as documented in the project's IP log.
 *
 * 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
 **/
package org.eclipse.egit.ui.internal.dialogs;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;

/**
 * Allows to select a single commit from a list of {@link RevCommit}s
 */
public class CommitSelectDialog extends TitleAreaDialog {
    private final List<RevCommit> commits = new ArrayList<RevCommit>();

    private RevCommit selected;

    /**
     * @param parent
     * @param commits
     **/
    public CommitSelectDialog(Shell parent, List<RevCommit> commits) {
        super(parent);
        setShellStyle(getShellStyle() | SWT.SHELL_TRIM);
        // sort by date ascending
        this.commits.addAll(commits);
        Collections.sort(this.commits, new Comparator<RevCommit>() {
            public int compare(RevCommit o1, RevCommit o2) {
                return o1.getAuthorIdent().getWhen().compareTo(o2.getAuthorIdent().getWhen());
            }
        });
        setHelpAvailable(false);
    }

    /**
     * @return the selected commit
     */
    public RevCommit getSelectedCommit() {
        return selected;
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Composite main = new Composite(parent, SWT.NONE);
        GridLayoutFactory.fillDefaults().applyTo(main);
        GridDataFactory.fillDefaults().grab(true, true).applyTo(main);
        TableViewer tv = new TableViewer(main, SWT.SINGLE | SWT.BORDER | SWT.FULL_SELECTION);
        GridDataFactory.fillDefaults().grab(true, true).applyTo(tv.getControl());
        tv.setContentProvider(ArrayContentProvider.getInstance());
        tv.setLabelProvider(new CommitLabelProvider());
        Table table = tv.getTable();
        TableColumn c0 = new TableColumn(table, SWT.NONE);
        c0.setWidth(70);
        c0.setText(UIText.CommitSelectDialog_IdColumn);
        TableColumn c1 = new TableColumn(table, SWT.NONE);
        c1.setWidth(200);
        c1.setText(UIText.CommitSelectDialog_MessageColumn);
        TableColumn c2 = new TableColumn(table, SWT.NONE);
        c2.setWidth(200);
        c2.setText(UIText.CommitSelectDialog_AuthoColumn);
        TableColumn c3 = new TableColumn(table, SWT.NONE);
        c3.setWidth(150);
        c3.setText(UIText.CommitSelectDialog_DateColumn);
        tv.setInput(commits);
        table.setHeaderVisible(true);
        table.setLinesVisible(true);
        tv.addSelectionChangedListener(new ISelectionChangedListener() {
            public void selectionChanged(SelectionChangedEvent event) {
                if (!event.getSelection().isEmpty())
                    selected = (RevCommit) ((IStructuredSelection) event.getSelection()).getFirstElement();
                else
                    selected = null;
                getButton(OK).setEnabled(selected != null);
            }
        });
        tv.addDoubleClickListener(new IDoubleClickListener() {
            public void doubleClick(DoubleClickEvent event) {
                okPressed();
            }
        });
        return main;
    }

    @Override
    public void create() {
        super.create();
        setTitle(UIText.CommitSelectDialog_Title);
        setMessage(UIText.CommitSelectDialog_Message);
        getButton(OK).setEnabled(false);
    }

    @Override
    protected void configureShell(Shell newShell) {
        super.configureShell(newShell);
        newShell.setText(UIText.CommitSelectDialog_WindowTitle);
    }
}