Java tutorial
/******************************************************************************* * Copyright (C) 2008, 2011 Tomi Pakarinen <tomi.pakarinen@iki.fi> 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 * * Contributors: * Benjamin Muskalla (Tasktop Technologies Inc) - Hyperlinking of HEAD *******************************************************************************/ package org.eclipse.egit.ui.internal.preferences; import java.io.IOException; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.egit.core.project.RepositoryMapping; import org.eclipse.egit.ui.Activator; import org.eclipse.egit.ui.internal.UIText; import org.eclipse.egit.ui.internal.commit.CommitEditor; import org.eclipse.egit.ui.internal.commit.RepositoryCommit; import org.eclipse.egit.ui.internal.trace.GitTraceLocation; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.resource.JFaceColors; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jgit.lib.ObjectId; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.revwalk.RevCommit; import org.eclipse.jgit.revwalk.RevWalk; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.PropertyPage; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.widgets.Hyperlink; /** * Property page to be shown in project properties, if project is shared using * git provider. Currently there aren't any modifiable element. */ public class GitProjectPropertyPage extends PropertyPage { private Text gitDir; private Text branch; private Text state; private Text workDir; @Override protected Control createContents(Composite parent) { // this page just shows read-only information to the user, no // default/apply buttons needed noDefaultAndApplyButton(); final Composite composite = new Composite(parent, SWT.NULL); composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); final GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.marginHeight = 0; layout.marginWidth = 0; layout.horizontalSpacing = 0; layout.verticalSpacing = 0; composite.setLayout(layout); gitDir = createLabeledReadOnlyText(composite, UIText.GitProjectPropertyPage_LabelGitDir); workDir = createLabeledReadOnlyText(composite, UIText.GitProjectPropertyPage_LabelWorkdir); branch = createLabeledReadOnlyText(composite, UIText.GitProjectPropertyPage_LabelBranch); state = createLabeledReadOnlyText(composite, UIText.GitProjectPropertyPage_LabelState); // Get the project that is the source of this property page IProject project = null; final IAdaptable element = getElement(); if (element instanceof IResource) { project = ((IResource) element).getProject(); } else { Object adapter = element.getAdapter(IResource.class); if (adapter instanceof IResource) { project = ((IResource) adapter).getProject(); } } Repository repository = RepositoryMapping.getMapping(project).getRepository(); if (repository != null) { try { createHeadLink(repository, composite); fillValues(repository); } catch (IOException e) { if (GitTraceLocation.UI.isActive()) GitTraceLocation.getTrace().trace(GitTraceLocation.UI.getLocation(), e.getMessage(), e); } } return composite; } private void createHeadLink(final Repository repository, Composite composite) throws IOException { final ObjectId objectId = repository.resolve(repository.getFullBranch()); if (objectId == null) { Text headLabel = createLabeledReadOnlyText(composite, UIText.GitProjectPropertyPage_LabelId); if (repository.getAllRefs().size() == 0) headLabel.setText(UIText.GitProjectPropertyPage_ValueEmptyRepository); else headLabel.setText(UIText.GitProjectPropertyPage_ValueUnbornBranch); } else { Hyperlink headLink = createHeadHyperLink(composite, UIText.GitProjectPropertyPage_LabelId); headLink.setText(objectId.name()); headLink.setUnderlined(true); headLink.setFont(JFaceResources.getDialogFont()); headLink.setForeground(JFaceColors.getHyperlinkText(headLink.getDisplay())); headLink.addHyperlinkListener(new HyperlinkAdapter() { @Override public void linkActivated(HyperlinkEvent e) { RepositoryCommit commit = getCommit(repository, objectId); if (commit != null) CommitEditor.openQuiet(commit); } }); } } private void fillValues(final Repository repository) throws IOException { gitDir.setText(repository.getDirectory().getAbsolutePath()); branch.setText(repository.getBranch()); workDir.setText(repository.getWorkTree().getAbsolutePath()); state.setText(repository.getRepositoryState().getDescription()); } private RepositoryCommit getCommit(Repository repository, ObjectId objectId) { RevWalk walk = new RevWalk(repository); try { RevCommit commit = walk.parseCommit(objectId); for (RevCommit parent : commit.getParents()) walk.parseBody(parent); return new RepositoryCommit(repository, commit); } catch (IOException e) { Activator.showError(NLS.bind(UIText.GitProjectPropertyPage_UnableToGetCommit, objectId.name()), e); } finally { walk.release(); } return null; } /** * Create a read only text field with a label * * @param parent * the parent composite for new widgets * @param labelText * text for label * @return the new read only text field */ private Text createLabeledReadOnlyText(Composite parent, final String labelText) { createLabel(parent, labelText); Text text = createText(parent); return text; } private Hyperlink createHeadHyperLink(Composite composite, String labelText) { createLabel(composite, labelText); Hyperlink hyperlink = new Hyperlink(composite, SWT.NONE); hyperlink.setLayoutData(GridDataFactory.fillDefaults().create()); return hyperlink; } private Text createText(Composite parent) { GridData data = new GridData(); Text text = new Text(parent, SWT.LEFT | SWT.READ_ONLY); text.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND)); data.horizontalSpan = 1; data.horizontalAlignment = GridData.FILL; text.setLayoutData(data); return text; } private void createLabel(Composite parent, final String labelText) { Label label = new Label(parent, SWT.LEFT); label.setText(labelText); GridData data = new GridData(); data.horizontalSpan = 1; data.horizontalAlignment = GridData.FILL; label.setLayoutData(data); } }