James Moger
2011-06-08 008322bec70a3a20bd00ed2219215a9f42fe0ca5
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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.panels;
 
import java.util.Date;
import java.util.List;
import java.util.Map;
 
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.panel.Fragment;
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.apache.wicket.model.StringResourceModel;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
 
import com.gitblit.GitBlit;
import com.gitblit.Keys;
import com.gitblit.models.PathModel;
import com.gitblit.models.PathModel.PathChangeModel;
import com.gitblit.models.RefModel;
import com.gitblit.utils.JGitUtils;
import com.gitblit.utils.JGitUtils.SearchType;
import com.gitblit.utils.StringUtils;
import com.gitblit.wicket.WicketUtils;
import com.gitblit.wicket.pages.BlobDiffPage;
import com.gitblit.wicket.pages.BlobPage;
import com.gitblit.wicket.pages.CommitDiffPage;
import com.gitblit.wicket.pages.CommitPage;
import com.gitblit.wicket.pages.HistoryPage;
import com.gitblit.wicket.pages.SearchPage;
import com.gitblit.wicket.pages.TreePage;
 
public class HistoryPanel extends BasePanel {
 
    private static final long serialVersionUID = 1L;
 
    private boolean hasMore;
 
    public HistoryPanel(String wicketId, final String repositoryName, final String objectId,
            final String path, Repository r, int limit, int pageOffset) {
        super(wicketId);
        boolean pageResults = limit <= 0;
        int itemsPerPage = GitBlit.getInteger(Keys.web.itemsPerPage, 50);
        if (itemsPerPage <= 1) {
            itemsPerPage = 50;
        }
 
        RevCommit commit = JGitUtils.getCommit(r, objectId);
        List<PathChangeModel> paths = JGitUtils.getFilesInCommit(r, commit);
 
        PathModel matchingPath = null;
        for (PathModel p : paths) {
            if (p.path.equals(path)) {
                matchingPath = p;
                break;
            }
        }
        final boolean isTree = matchingPath == null ? true : matchingPath.isTree();
 
        final Map<ObjectId, List<RefModel>> allRefs = JGitUtils.getAllRefs(r);
        List<RevCommit> commits;
        if (pageResults) {
            // Paging result set
            commits = JGitUtils.getRevLog(r, objectId, path, pageOffset * itemsPerPage,
                    itemsPerPage);
        } else {
            // Fixed size result set
            commits = JGitUtils.getRevLog(r, objectId, path, 0, limit);
        }
 
        // inaccurate way to determine if there are more commits.
        // works unless commits.size() represents the exact end.
        hasMore = commits.size() >= itemsPerPage;
 
        add(new CommitHeaderPanel("commitHeader", repositoryName, commit));
 
        // breadcrumbs
        add(new PathBreadcrumbsPanel("breadcrumbs", repositoryName, path, objectId));
 
        ListDataProvider<RevCommit> dp = new ListDataProvider<RevCommit>(commits);
        DataView<RevCommit> logView = new DataView<RevCommit>("commit", dp) {
            private static final long serialVersionUID = 1L;
            int counter;
 
            public void populateItem(final Item<RevCommit> item) {
                final RevCommit entry = item.getModelObject();
                final Date date = JGitUtils.getCommitDate(entry);
 
                item.add(WicketUtils.createDateLabel("commitDate", date, getTimeZone()));
 
                // author search link
                String author = entry.getAuthorIdent().getName();
                LinkPanel authorLink = new LinkPanel("commitAuthor", "list", author,
                        SearchPage.class, WicketUtils.newSearchParameter(repositoryName, objectId,
                                author, SearchType.AUTHOR));
                setPersonSearchTooltip(authorLink, author, SearchType.AUTHOR);
                item.add(authorLink);
 
                // merge icon
                if (entry.getParentCount() > 1) {
                    item.add(WicketUtils.newImage("commitIcon", "commit_merge_16x16.png"));
                } else {
                    item.add(WicketUtils.newBlankImage("commitIcon"));
                }
 
                String shortMessage = entry.getShortMessage();
                String trimmedMessage = StringUtils.trimShortLog(shortMessage);
                LinkPanel shortlog = new LinkPanel("commitShortMessage", "list subject",
                        trimmedMessage, CommitPage.class, WicketUtils.newObjectParameter(
                                repositoryName, entry.getName()));
                if (!shortMessage.equals(trimmedMessage)) {
                    WicketUtils.setHtmlTooltip(shortlog, shortMessage);
                }
                item.add(shortlog);
 
                item.add(new RefsPanel("commitRefs", repositoryName, entry, allRefs));
 
                if (isTree) {
                    Fragment links = new Fragment("historyLinks", "treeLinks", this);
                    links.add(new BookmarkablePageLink<Void>("tree", TreePage.class, WicketUtils
                            .newObjectParameter(repositoryName, entry.getName())));
                    links.add(new BookmarkablePageLink<Void>("commitdiff", CommitDiffPage.class,
                            WicketUtils.newObjectParameter(repositoryName, entry.getName())));
                    item.add(links);
                } else {
                    Fragment links = new Fragment("historyLinks", "blobLinks", this);
                    links.add(new BookmarkablePageLink<Void>("view", BlobPage.class, WicketUtils
                            .newPathParameter(repositoryName, entry.getName(), path)));
                    links.add(new BookmarkablePageLink<Void>("commitdiff", CommitDiffPage.class,
                            WicketUtils.newObjectParameter(repositoryName, entry.getName())));
                    links.add(new BookmarkablePageLink<Void>("difftocurrent", BlobDiffPage.class,
                            WicketUtils.newBlobDiffParameter(repositoryName, entry.getName(),
                                    objectId, path)).setEnabled(counter > 0));
                    item.add(links);
                }
 
                WicketUtils.setAlternatingBackground(item, counter);
                counter++;
            }
        };
        add(logView);
 
        // determine to show pager, more, or neither
        if (limit <= 0) {
            // no display limit
            add(new Label("moreHistory", "").setVisible(false));
        } else {
            if (pageResults) {
                // paging
                add(new Label("moreHistory", "").setVisible(false));
            } else {
                // more
                if (commits.size() == limit) {
                    // show more
                    add(new LinkPanel("moreHistory", "link", new StringResourceModel(
                            "gb.moreHistory", this, null), HistoryPage.class,
                            WicketUtils.newPathParameter(repositoryName, objectId, path)));
                } else {
                    // no more
                    add(new Label("moreHistory", "").setVisible(false));
                }
            }
        }
    }
 
    public boolean hasMore() {
        return hasMore;
    }
}