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path: root/src/main/java/com/gitblit/wicket/pages/BlobDiffPage.java
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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 org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;

import com.gitblit.GitBlit;
import com.gitblit.Keys;
import com.gitblit.utils.DiffUtils;
import com.gitblit.utils.DiffUtils.DiffOutputType;
import com.gitblit.utils.JGitUtils;
import com.gitblit.utils.StringUtils;
import com.gitblit.wicket.WicketUtils;
import com.gitblit.wicket.panels.CommitHeaderPanel;
import com.gitblit.wicket.panels.PathBreadcrumbsPanel;

public class BlobDiffPage extends RepositoryPage {

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

		final String blobPath = WicketUtils.getPath(params);
		final String baseObjectId = WicketUtils.getBaseObjectId(params);

		Repository r = getRepository();
		RevCommit commit = getCommit();

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

		String diff;
		if (StringUtils.isEmpty(baseObjectId)) {
			// use first parent
			diff = DiffUtils.getDiff(r, commit, blobPath, diffType);
			add(new BookmarkablePageLink<Void>("patchLink", PatchPage.class,
					WicketUtils.newPathParameter(repositoryName, objectId, blobPath)));
		} else {
			// base commit specified
			RevCommit baseCommit = JGitUtils.getCommit(r, baseObjectId);
			diff = DiffUtils.getDiff(r, baseCommit, commit, blobPath, diffType);
			add(new BookmarkablePageLink<Void>("patchLink", PatchPage.class,
					WicketUtils.newBlobDiffParameter(repositoryName, baseObjectId, objectId,
							blobPath)));
		}

		add(new BookmarkablePageLink<Void>("commitLink", CommitPage.class,
				WicketUtils.newObjectParameter(repositoryName, objectId)));
		add(new BookmarkablePageLink<Void>("commitDiffLink", CommitDiffPage.class,
				WicketUtils.newObjectParameter(repositoryName, objectId)));

		// diff page links
		add(new BookmarkablePageLink<Void>("blameLink", BlamePage.class,
				WicketUtils.newPathParameter(repositoryName, objectId, 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));

		add(new Label("diffText", diff).setEscapeModelStrings(false));
	}

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