Java tutorial
/* * Copyright 2013 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.MessageFormat; import java.util.ArrayList; import java.util.List; import org.apache.wicket.request.http.handler.RedirectRequestHandler; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.CheckBox; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.link.BookmarkablePageLink; import org.apache.wicket.markup.html.link.ExternalLink; 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.IModel; import org.apache.wicket.model.Model; import org.apache.wicket.protocol.http.RequestUtils; import org.eclipse.jgit.diff.DiffEntry.ChangeType; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.revwalk.RevCommit; import com.gitblit.Keys; import com.gitblit.models.PathModel.PathChangeModel; import com.gitblit.models.RefModel; import com.gitblit.models.RepositoryModel; import com.gitblit.models.SubmoduleModel; import com.gitblit.servlet.RawServlet; import com.gitblit.utils.DiffUtils; import com.gitblit.utils.GitBlitRequestUtils; import com.gitblit.utils.DiffUtils.DiffComparator; import com.gitblit.utils.DiffUtils.DiffOutput; import com.gitblit.utils.DiffUtils.DiffOutputType; import com.gitblit.utils.JGitUtils; import com.gitblit.utils.StringUtils; import com.gitblit.wicket.SessionlessForm; import com.gitblit.wicket.WicketUtils; import com.gitblit.wicket.panels.CommitLegendPanel; import com.gitblit.wicket.panels.DiffStatPanel; import com.gitblit.wicket.panels.LinkPanel; import com.gitblit.wicket.panels.LogPanel; /** * The compare page allows you to compare two branches, tags, or hash ids. * * @author James Moger * */ public class ComparePage extends RepositoryPage { IModel<String> fromCommitId = new Model<String>(""); IModel<String> toCommitId = new Model<String>(""); IModel<String> fromRefId = new Model<String>(""); IModel<String> toRefId = new Model<String>(""); IModel<Boolean> ignoreWhitespace = Model.of(true); public ComparePage(PageParameters params) { super(params); Repository r = getRepository(); RepositoryModel repository = getRepositoryModel(); if (StringUtils.isEmpty(objectId)) { // seleciton form add(new Label("comparison").setVisible(false)); } else { // active comparison Fragment comparison = new Fragment("comparison", "comparisonFragment", ComparePage.this); add(comparison); RevCommit fromCommit; RevCommit toCommit; String[] parts = objectId.split("\\.\\."); if (parts[0].startsWith("refs/") && parts[1].startsWith("refs/")) { // set the ref models fromRefId.setObject(parts[0]); toRefId.setObject(parts[1]); fromCommit = getCommit(r, fromRefId.getObject()); toCommit = getCommit(r, toRefId.getObject()); } else { // set the id models fromCommitId.setObject(parts[0]); toCommitId.setObject(parts[1]); fromCommit = getCommit(r, fromCommitId.getObject()); toCommit = getCommit(r, toCommitId.getObject()); } // prepare submodules getSubmodules(toCommit); final String startId = fromCommit.getId().getName(); final String endId = toCommit.getId().getName(); // commit ids fromCommitId.setObject(startId); toCommitId.setObject(endId); final List<String> imageExtensions = app().settings().getStrings(Keys.web.imageExtensions); final ImageDiffHandler handler = new ImageDiffHandler(this, repositoryName, fromCommit.getName(), toCommit.getName(), imageExtensions); final DiffComparator diffComparator = WicketUtils.getDiffComparator(params); final int tabLength = app().settings().getInteger(Keys.web.tabLength, 4); final DiffOutput diff = DiffUtils.getDiff(r, fromCommit, toCommit, diffComparator, DiffOutputType.HTML, handler, tabLength); if (handler.getImgDiffCount() > 0) { addBottomScript("scripts/imgdiff.js"); // Tiny support script for image diffs } // add compare diffstat int insertions = 0; int deletions = 0; for (PathChangeModel pcm : diff.stat.paths) { insertions += pcm.insertions; deletions += pcm.deletions; } comparison.add(new DiffStatPanel("diffStat", insertions, deletions)); // compare page links // comparison.add(new BookmarkablePageLink<Void>("patchLink", PatchPage.class, // WicketUtils.newRangeParameter(repositoryName, fromCommitId.toString(), toCommitId.getObject()))); // display list of commits comparison.add( new LogPanel("commitList", repositoryName, objectId, r, 0, 0, repository.showRemoteBranches)); // changed paths list comparison.add(new CommitLegendPanel("commitLegend", diff.stat.paths)); ListDataProvider<PathChangeModel> pathsDp = new ListDataProvider<PathChangeModel>(diff.stat.paths); DataView<PathChangeModel> pathsView = new DataView<PathChangeModel>("changedPath", pathsDp) { private static final long serialVersionUID = 1L; int counter; @Override 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); item.add(new DiffStatPanel("diffStat", entry.insertions, entry.deletions, true)); boolean hasSubmodule = false; String submodulePath = null; if (entry.isTree()) { // tree item.add(new LinkPanel("pathName", null, entry.path, TreePage.class, WicketUtils.newPathParameter(repositoryName, endId, 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), "#n" + entry.objectId)); } else { // add relative link item.add(new LinkPanel("pathName", "list", entry.path, "#n" + entry.objectId)); } // 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("raw", "").setEnabled(false)); item.add(new ExternalLink("blame", "").setEnabled(false)); item.add(new BookmarkablePageLink<Void>("history", HistoryPage.class, WicketUtils.newPathParameter(repositoryName, endId, entry.path)) .setEnabled(!entry.changeType.equals(ChangeType.ADD))); } else { // tree or blob item.add(new BookmarkablePageLink<Void>("patch", PatchPage.class, WicketUtils.newBlobDiffParameter(repositoryName, startId, endId, entry.path)) .setEnabled(!entry.changeType.equals(ChangeType.DELETE))); item.add(new BookmarkablePageLink<Void>("view", BlobPage.class, WicketUtils.newPathParameter(repositoryName, endId, entry.path)) .setEnabled(!entry.changeType.equals(ChangeType.DELETE))); String rawUrl = RawServlet.asLink(getContextUrl(), repositoryName, endId, entry.path); item.add(new ExternalLink("raw", rawUrl) .setEnabled(!entry.changeType.equals(ChangeType.DELETE))); item.add(new BookmarkablePageLink<Void>("blame", BlamePage.class, WicketUtils.newPathParameter(repositoryName, endId, entry.path)) .setEnabled(!entry.changeType.equals(ChangeType.ADD) && !entry.changeType.equals(ChangeType.DELETE))); item.add(new BookmarkablePageLink<Void>("history", HistoryPage.class, WicketUtils.newPathParameter(repositoryName, endId, entry.path)) .setEnabled(!entry.changeType.equals(ChangeType.ADD))); } WicketUtils.setAlternatingBackground(item, counter); counter++; } }; comparison.add(pathsView); comparison.add(new Label("diffText", diff.content).setEscapeModelStrings(false)); } // set the default DiffComparator DiffComparator diffComparator = WicketUtils.getDiffComparator(params); ignoreWhitespace.setObject(DiffComparator.IGNORE_WHITESPACE == diffComparator); // // ref selection form // SessionlessForm<Void> refsForm = new SessionlessForm<Void>("compareRefsForm", getClass(), getPageParameters()) { private static final long serialVersionUID = 1L; @Override public void onSubmit() { String from = ComparePage.this.fromRefId.getObject(); String to = ComparePage.this.toRefId.getObject(); boolean ignoreWS = ignoreWhitespace.getObject(); PageParameters params = WicketUtils.newRangeParameter(repositoryName, from, to); if (ignoreWS) { params.add("w", 1); } String absoluteUrl = GitBlitRequestUtils.toAbsoluteUrl(ComparePage.class, params); getRequestCycle().scheduleRequestHandlerAfterCurrent(new RedirectRequestHandler(absoluteUrl)); } }; List<String> refs = new ArrayList<String>(); for (RefModel ref : JGitUtils.getLocalBranches(r, true, -1)) { refs.add(ref.getName()); } if (repository.showRemoteBranches) { for (RefModel ref : JGitUtils.getRemoteBranches(r, true, -1)) { refs.add(ref.getName()); } } for (RefModel ref : JGitUtils.getTags(r, true, -1)) { refs.add(ref.getName()); } refsForm.add(new DropDownChoice<String>("fromRef", fromRefId, refs).setEnabled(refs.size() > 0)); refsForm.add(new DropDownChoice<String>("toRef", toRefId, refs).setEnabled(refs.size() > 0)); refsForm.add(new Label("ignoreWhitespaceLabel", getString(DiffComparator.IGNORE_WHITESPACE.getTranslationKey()))); refsForm.add(new CheckBox("ignoreWhitespaceCheckbox", ignoreWhitespace)); add(refsForm); // // manual ids form // SessionlessForm<Void> idsForm = new SessionlessForm<Void>("compareIdsForm", getClass(), getPageParameters()) { private static final long serialVersionUID = 1L; @Override public void onSubmit() { String from = ComparePage.this.fromCommitId.getObject(); String to = ComparePage.this.toCommitId.getObject(); boolean ignoreWS = ignoreWhitespace.getObject(); PageParameters params = WicketUtils.newRangeParameter(repositoryName, from, to); if (ignoreWS) { params.add("w", 1); } String absoluteUrl = GitBlitRequestUtils.toAbsoluteUrl(ComparePage.class, params); getRequestCycle().scheduleRequestHandlerAfterCurrent(new RedirectRequestHandler(absoluteUrl)); } }; TextField<String> fromIdField = new TextField<String>("fromId", fromCommitId); WicketUtils.setInputPlaceholder(fromIdField, getString("gb.from") + "..."); idsForm.add(fromIdField); TextField<String> toIdField = new TextField<String>("toId", toCommitId); WicketUtils.setInputPlaceholder(toIdField, getString("gb.to") + "..."); idsForm.add(toIdField); idsForm.add(new Label("ignoreWhitespaceLabel", getString(DiffComparator.IGNORE_WHITESPACE.getTranslationKey()))); idsForm.add(new CheckBox("ignoreWhitespaceCheckbox", ignoreWhitespace)); add(idsForm); r.close(); } @Override protected String getPageName() { return getString("gb.compare"); } @Override protected Class<? extends BasePage> getRepoNavPageClass() { return ComparePage.class; } private RevCommit getCommit(Repository r, String rev) { RevCommit otherCommit = JGitUtils.getCommit(r, rev); if (otherCommit == null) { error(MessageFormat.format(getString("gb.failedToFindCommit"), rev, repositoryName, getPageName()), true); } return otherCommit; } }