Java tutorial
/******************************************************************************* * Copyright (C) 2008, 2011 Marek Zawirski <marek.zawirski@gmail.com> and others. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html *******************************************************************************/ package org.eclipse.egit.ui.internal.push; import java.io.IOException; import java.text.MessageFormat; import java.util.ArrayList; import java.util.List; import org.eclipse.egit.core.op.PushOperationResult; import org.eclipse.egit.ui.Activator; import org.eclipse.egit.ui.internal.DecorationOverlayDescriptor; import org.eclipse.egit.ui.internal.UIIcons; import org.eclipse.egit.ui.internal.UIText; import org.eclipse.egit.ui.internal.commit.RepositoryCommit; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.IDecoration; import org.eclipse.jface.viewers.StyledString; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.ObjectReader; import org.eclipse.jgit.lib.Ref; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.notes.NoteMap; import org.eclipse.jgit.revwalk.RevCommit; import org.eclipse.jgit.revwalk.RevWalk; import org.eclipse.jgit.transport.RemoteRefUpdate; import org.eclipse.jgit.transport.RemoteRefUpdate.Status; import org.eclipse.jgit.transport.URIish; import org.eclipse.ui.model.WorkbenchAdapter; /** * Data class representing row (element) of table with push results. * <p> * Each row is associated with one ref update, while each column is associated * with one URI (remote repository). * * @see PushOperationResult * @see RefUpdateContentProvider */ class RefUpdateElement extends WorkbenchAdapter { private final RemoteRefUpdate update; private final PushOperationResult result; private final URIish uri; private final ObjectReader reader; private final Repository repo; private Object[] children; private final boolean tag; RefUpdateElement(final PushOperationResult result, RemoteRefUpdate update, URIish uri, ObjectReader reader, Repository repo) { this.result = result; this.update = update; this.uri = uri; this.reader = reader; this.repo = repo; String remote = update.getRemoteName(); tag = remote != null && remote.startsWith(Constants.R_TAGS); } URIish getUri() { return uri; } String getSrcRefName() { return update.getSrcRef(); } String getDstRefName() { return update.getRemoteName(); } boolean isDelete() { // Assuming that we never use ObjectId.zeroId() in GUI. // (no need to compare to it). return getSrcRefName() == null; } boolean isAdd() { return getAdvertisedRemoteRef() == null; } boolean isRejected() { switch (getStatus()) { case REJECTED_NODELETE: case REJECTED_NONFASTFORWARD: case REJECTED_OTHER_REASON: case REJECTED_REMOTE_CHANGED: return true; default: return false; } } boolean isTag() { return tag; } PushOperationResult getPushOperationResult() { return result; } boolean isSuccessfulConnection() { return result.isSuccessfulConnection(uri); } String getErrorMessage() { return result.getErrorMessage(uri); } Status getStatus() { return update.getStatus(); } RemoteRefUpdate getRemoteRefUpdate() { return update; } Ref getAdvertisedRemoteRef() { return result.getPushResult(uri).getAdvertisedRef(getDstRefName()); } public ImageDescriptor getImageDescriptor(Object object) { switch (getStatus()) { case OK: if (isDelete()) return tag ? new DecorationOverlayDescriptor(UIIcons.TAG, UIIcons.OVR_STAGED_REMOVE, IDecoration.TOP_RIGHT) : new DecorationOverlayDescriptor(UIIcons.BRANCH, UIIcons.OVR_STAGED_REMOVE, IDecoration.TOP_RIGHT); if (isAdd()) return tag ? UIIcons.CREATE_TAG : UIIcons.CREATE_BRANCH; else return tag ? UIIcons.TAG : UIIcons.BRANCH; case UP_TO_DATE: return tag ? UIIcons.TAG : UIIcons.BRANCH; case REJECTED_NODELETE: case REJECTED_NONFASTFORWARD: case REJECTED_OTHER_REASON: case REJECTED_REMOTE_CHANGED: return tag ? new DecorationOverlayDescriptor(UIIcons.TAG, UIIcons.OVR_ERROR, IDecoration.TOP_RIGHT) : new DecorationOverlayDescriptor(UIIcons.BRANCH, UIIcons.OVR_ERROR, IDecoration.TOP_RIGHT); default: return super.getImageDescriptor(object); } } public String getLabel(Object object) { return getStyledText(object).getString(); } private RepositoryCommit[] getCommits(Ref end) { final RevWalk walk = new RevWalk(reader); try { walk.setRetainBody(true); walk.markStart(walk.parseCommit(update.getNewObjectId())); walk.markUninteresting(walk.parseCommit(end.getObjectId())); List<RepositoryCommit> commits = new ArrayList<RepositoryCommit>(); for (RevCommit commit : walk) commits.add(new RepositoryCommit(repo, commit)); return commits.toArray(new RepositoryCommit[commits.size()]); } catch (IOException e) { Activator.logError("Error parsing commits from push result", e); //$NON-NLS-1$ return new RepositoryCommit[0]; } } public Object[] getChildren(Object object) { if (children != null) return children; switch (update.getStatus()) { case OK: if (!isDelete()) { final Ref ref = getAdvertisedRemoteRef(); if (ref != null) { children = getCommits(ref); break; } } //$FALL-THROUGH$ default: children = super.getChildren(object); } return children; } /** * Shorten ref name * * @param ref * @return shortened ref name */ protected String shortenRef(final String ref) { return NoteMap.shortenRefName(Repository.shortenRefName(ref)); } /** * Get styled text * * @param object * @return styled string */ public StyledString getStyledText(Object object) { StyledString styled = new StyledString(); final String remote = getDstRefName(); final String local = getSrcRefName(); styled.append(shortenRef(remote)); if (!tag && local != null) { styled.append(": ", StyledString.QUALIFIER_STYLER); //$NON-NLS-1$ styled.append(shortenRef(local), StyledString.QUALIFIER_STYLER); } styled.append(' '); // Include uri if more than one if (result.getURIs().size() > 1) { styled.append(MessageFormat.format(UIText.RefUpdateElement_UrisDecoration, uri.toString()), StyledString.QUALIFIER_STYLER); styled.append(' '); } switch (getStatus()) { case OK: if (update.isDelete()) styled.append(UIText.PushResultTable_statusOkDeleted, StyledString.DECORATIONS_STYLER); else { final Ref oldRef = getAdvertisedRemoteRef(); if (oldRef == null) { if (tag) styled.append(UIText.PushResultTable_statusOkNewTag, StyledString.DECORATIONS_STYLER); else styled.append(UIText.PushResultTable_statusOkNewBranch, StyledString.DECORATIONS_STYLER); } else { String separator = update.isFastForward() ? ".." : "..."; //$NON-NLS-1$ //$NON-NLS-2$ styled.append(MessageFormat.format(UIText.RefUpdateElement_CommitRangeDecoration, update.getNewObjectId().abbreviate(7).name(), separator, oldRef.getObjectId().abbreviate(7).name()), StyledString.DECORATIONS_STYLER); styled.append(' '); styled.append(MessageFormat.format(UIText.RefUpdateElement_CommitCountDecoration, Integer.valueOf(getChildren(this).length)), StyledString.COUNTER_STYLER); } } break; case UP_TO_DATE: styled.append(UIText.PushResultTable_statusUpToDate, StyledString.DECORATIONS_STYLER); break; case NON_EXISTING: styled.append(UIText.PushResultTable_statusNoMatch, StyledString.DECORATIONS_STYLER); break; case REJECTED_NODELETE: case REJECTED_REMOTE_CHANGED: styled.append(UIText.PushResultTable_statusRejected, StyledString.DECORATIONS_STYLER); break; case REJECTED_NONFASTFORWARD: styled.append(UIText.RefUpdateElement_statusRejectedNonFastForward, StyledString.DECORATIONS_STYLER); break; case REJECTED_OTHER_REASON: styled.append(UIText.PushResultTable_statusRemoteRejected, StyledString.DECORATIONS_STYLER); break; default: break; } return styled; } }