Merge branch 'master' of https://github.com/gitblit/gitblit

Rafael Cavazin

2013-07-21 f66e89662c091e082bd1d2feb6ac91513ccff273

 src/main/java/com/gitblit/wicket/pages/CommitDiffPage.java

New file
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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.util.ArrayList;
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.html.link.ExternalLink;
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.diff.DiffEntry.ChangeType;
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.PathChangeModel;
import com.gitblit.models.SubmoduleModel;
import com.gitblit.utils.DiffUtils;
import com.gitblit.utils.DiffUtils.DiffOutputType;
import com.gitblit.utils.JGitUtils;
import com.gitblit.wicket.CacheControl;
import com.gitblit.wicket.CacheControl.LastModified;
import com.gitblit.wicket.WicketUtils;
import com.gitblit.wicket.panels.CommitHeaderPanel;
import com.gitblit.wicket.panels.CommitLegendPanel;
import com.gitblit.wicket.panels.LinkPanel;

@CacheControl(LastModified.BOOT)
public class CommitDiffPage extends RepositoryPage {

   public CommitDiffPage(PageParameters params) {
      super(params);

      Repository r = getRepository();

      DiffOutputType diffType = DiffOutputType.forName(GitBlit.getString(Keys.web.diffStyle,
            DiffOutputType.GITBLIT.name()));

      RevCommit commit = getCommit();

      String diff = DiffUtils.getCommitDiff(r, commit, diffType);

      List<String> parents = new ArrayList<String>();
      if (commit.getParentCount() > 0) {
         for (RevCommit parent : commit.getParents()) {
            parents.add(parent.name());
         }
      }

      // commit page links
      if (parents.size() == 0) {
         add(new Label("parentLink", getString("gb.none")));
      } else {
         add(new LinkPanel("parentLink", null, parents.get(0).substring(0, 8),
               CommitDiffPage.class, newCommitParameter(parents.get(0))));
      }
      add(new BookmarkablePageLink<Void>("patchLink", PatchPage.class,
            WicketUtils.newObjectParameter(repositoryName, objectId)));
      add(new BookmarkablePageLink<Void>("commitLink", CommitPage.class,
            WicketUtils.newObjectParameter(repositoryName, objectId)));

      add(new CommitHeaderPanel("commitHeader", repositoryName, commit));

      addFullText("fullMessage", commit.getFullMessage(), true);

      // changed paths list
      List<PathChangeModel> paths = JGitUtils.getFilesInCommit(r, commit);

      add(new CommitLegendPanel("commitLegend", paths));
      ListDataProvider<PathChangeModel> pathsDp = new ListDataProvider<PathChangeModel>(paths);
      DataView<PathChangeModel> pathsView = new DataView<PathChangeModel>("changedPath", pathsDp) {
         private static final long serialVersionUID = 1L;
         int counter;

         public void populateItem(final Item<PathChangeModel> item) {
            final PathChangeModel entry = item.getModelObject();
            Label changeType = new Label("changeType", "");
            WicketUtils.setChangeTypeCssClass(changeType, entry.changeType);
            setChangeTypeTooltip(changeType, entry.changeType);
            item.add(changeType);

            boolean hasSubmodule = false;
            String submodulePath = null;
            if (entry.isTree()) {
               // tree
               item.add(new LinkPanel("pathName", null, entry.path, TreePage.class,
                     WicketUtils
                           .newPathParameter(repositoryName, entry.commitId, entry.path)));
            } else if (entry.isSubmodule()) {
               // submodule
               String submoduleId = entry.objectId;
               SubmoduleModel submodule = getSubmodule(entry.path);
               submodulePath = submodule.gitblitPath;
               hasSubmodule = submodule.hasSubmodule;

               // add relative link
               item.add(new LinkPanel("pathName", "list", entry.path + " @ " + getShortObjectId(submoduleId), "#" + entry.path));
            } else {
               // add relative link
               item.add(new LinkPanel("pathName", "list", entry.path, "#" + entry.path));
            }

            // quick links
            if (entry.isSubmodule()) {
               // submodule
               item.add(new ExternalLink("patch", "").setEnabled(false));
               item.add(new BookmarkablePageLink<Void>("view", CommitPage.class, WicketUtils
                     .newObjectParameter(submodulePath, entry.objectId)).setEnabled(hasSubmodule));
               item.add(new ExternalLink("blame", "").setEnabled(false));
               item.add(new BookmarkablePageLink<Void>("history", HistoryPage.class, WicketUtils
                     .newPathParameter(repositoryName, entry.commitId, entry.path))
                     .setEnabled(!entry.changeType.equals(ChangeType.ADD)));
            } else {
               // tree or blob
               item.add(new BookmarkablePageLink<Void>("patch", PatchPage.class, WicketUtils
                     .newPathParameter(repositoryName, entry.commitId, entry.path))
                     .setEnabled(!entry.changeType.equals(ChangeType.ADD)
                           && !entry.changeType.equals(ChangeType.DELETE)));
               item.add(new BookmarkablePageLink<Void>("view", BlobPage.class, WicketUtils
                     .newPathParameter(repositoryName, entry.commitId, entry.path))
                     .setEnabled(!entry.changeType.equals(ChangeType.DELETE)));
               item.add(new BookmarkablePageLink<Void>("blame", BlamePage.class, WicketUtils
                     .newPathParameter(repositoryName, entry.commitId, entry.path))
                     .setEnabled(!entry.changeType.equals(ChangeType.ADD)
                           && !entry.changeType.equals(ChangeType.DELETE)));
               item.add(new BookmarkablePageLink<Void>("history", HistoryPage.class, WicketUtils
                     .newPathParameter(repositoryName, entry.commitId, entry.path))
                     .setEnabled(!entry.changeType.equals(ChangeType.ADD)));
            }
				
            WicketUtils.setAlternatingBackground(item, counter);
            counter++;
         }
      };
      add(pathsView);
      add(new Label("diffText", diff).setEscapeModelStrings(false));
   }

   @Override
   protected String getPageName() {
      return getString("gb.commitdiff");
   }
	
   @Override
   protected Class<? extends BasePage> getRepoNavPageClass() {
      return LogPage.class;
   }
}