James Moger
2012-09-10 fabe060d3a435f116128851f828e35c2af5fde67
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/*
 * Copyright 2011 gitblit.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitblit.wicket.pages;
 
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.List;
 
import org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.data.DataView;
import org.apache.wicket.markup.repeater.data.ListDataProvider;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.revwalk.RevCommit;
 
import com.gitblit.GitBlit;
import com.gitblit.Keys;
import com.gitblit.models.AnnotatedLine;
import com.gitblit.utils.DiffUtils;
import com.gitblit.utils.StringUtils;
import com.gitblit.wicket.WicketUtils;
import com.gitblit.wicket.panels.CommitHeaderPanel;
import com.gitblit.wicket.panels.LinkPanel;
import com.gitblit.wicket.panels.PathBreadcrumbsPanel;
 
public class BlamePage extends RepositoryPage {
 
    public BlamePage(PageParameters params) {
        super(params);
 
        final String blobPath = WicketUtils.getPath(params);
 
        RevCommit commit = getCommit();
 
        add(new BookmarkablePageLink<Void>("blobLink", BlobPage.class,
                WicketUtils.newPathParameter(repositoryName, objectId, blobPath)));
        add(new BookmarkablePageLink<Void>("commitLink", CommitPage.class,
                WicketUtils.newObjectParameter(repositoryName, objectId)));
        add(new BookmarkablePageLink<Void>("commitDiffLink", CommitDiffPage.class,
                WicketUtils.newObjectParameter(repositoryName, objectId)));
 
        // blame page links
        add(new BookmarkablePageLink<Void>("headLink", BlamePage.class,
                WicketUtils.newPathParameter(repositoryName, Constants.HEAD, blobPath)));
        add(new BookmarkablePageLink<Void>("historyLink", HistoryPage.class,
                WicketUtils.newPathParameter(repositoryName, objectId, blobPath)));
 
        add(new CommitHeaderPanel("commitHeader", repositoryName, commit));
 
        add(new PathBreadcrumbsPanel("breadcrumbs", repositoryName, blobPath, objectId));
 
        String format = GitBlit.getString(Keys.web.datetimestampLongFormat,
                "EEEE, MMMM d, yyyy HH:mm Z");
        final DateFormat df = new SimpleDateFormat(format);
        df.setTimeZone(getTimeZone());
        List<AnnotatedLine> lines = DiffUtils.blame(getRepository(), blobPath, objectId);
        ListDataProvider<AnnotatedLine> blameDp = new ListDataProvider<AnnotatedLine>(lines);
        DataView<AnnotatedLine> blameView = new DataView<AnnotatedLine>("annotation", blameDp) {
            private static final long serialVersionUID = 1L;
            private int count;
            private String lastCommitId = "";
            private boolean showInitials = true;
 
            public void populateItem(final Item<AnnotatedLine> item) {
                AnnotatedLine entry = item.getModelObject();
                item.add(new Label("line", "" + entry.lineNumber));
                item.add(new Label("data", StringUtils.escapeForHtml(entry.data, true))
                        .setEscapeModelStrings(false));
                if (!lastCommitId.equals(entry.commitId)) {
                    lastCommitId = entry.commitId;
                    count++;
                    // show the link for first line
                    LinkPanel commitLink = new LinkPanel("commit", null,
                            getShortObjectId(entry.commitId), CommitPage.class,
                            newCommitParameter(entry.commitId));
                    WicketUtils.setHtmlTooltip(commitLink,
                            MessageFormat.format("{0}, {1}", entry.author, df.format(entry.when)));
                    item.add(commitLink);
                    showInitials = true;
                } else {
                    if (showInitials) {
                        showInitials = false;
                        // show author initials
                        item.add(new Label("commit", getInitials(entry.author)));
                    } else {
                        // hide the commit link until the next block
                        item.add(new Label("commit").setVisible(false));
                    }
                }
                if (count % 2 == 0) {
                    WicketUtils.setCssClass(item, "even");
                } else {
                    WicketUtils.setCssClass(item, "odd");
                }
            }
        };
        add(blameView);
    }
 
    private String getInitials(String author) {
        StringBuilder sb = new StringBuilder();
        String[] chunks = author.split(" ");
        for (String chunk : chunks) {
            sb.append(chunk.charAt(0));
        }
        return sb.toString().toUpperCase();
    }
 
    @Override
    protected String getPageName() {
        return getString("gb.blame");
    }
}