Java tutorial
/******************************************************************************* * Copyright (c) 2011 Christian Trutz * 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: * Christian Trutz - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.internal.github.ui; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.text.MessageFormat; import java.util.Collections; import java.util.List; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.egit.github.core.Language; import org.eclipse.egit.github.core.Repository; import org.eclipse.egit.github.core.SearchRepository; import org.eclipse.egit.github.core.service.RepositoryService; import org.eclipse.egit.github.core.util.UrlUtils; import org.eclipse.egit.ui.internal.UIIcons; import org.eclipse.egit.ui.internal.provisional.wizards.GitRepositoryInfo; import org.eclipse.egit.ui.internal.provisional.wizards.IRepositorySearchResult; import org.eclipse.egit.ui.internal.provisional.wizards.NoRepositoryInfoException; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider; import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.StyledString; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.mylyn.internal.github.core.GitHub; import org.eclipse.mylyn.internal.github.core.GitHubException; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; /** * Search for GitHub repositories wizard page. */ @SuppressWarnings("restriction") public class RepositorySearchWizardPage extends WizardPage implements IRepositorySearchResult { private SearchRepository[] repositories = null; private final RepositoryService repositoryService; private Text searchText; /** * */ public RepositorySearchWizardPage() { super("repoSearchPage", Messages.RepositorySearchWizardPage_Title, null); //$NON-NLS-1$ setDescription(Messages.RepositorySearchWizardPage_Description); setPageComplete(false); repositoryService = new RepositoryService(); GitHub.configureClient(repositoryService.getClient()); } /** * Get selected repositories * * @return repositories */ protected SearchRepository[] getRepositories() { return repositories; } /** * */ public void createControl(Composite parent) { final Composite root = new Composite(parent, SWT.NONE); GridLayoutFactory.swtDefaults().numColumns(1).applyTo(root); Composite rowOne = new Composite(root, SWT.NONE); GridLayoutFactory.fillDefaults().numColumns(2).applyTo(rowOne); Label searchForLabel = new Label(rowOne, SWT.NONE); searchForLabel.setText(Messages.RepositorySearchWizardPage_SearchForRepositories); final Combo languageCombo = new Combo(rowOne, SWT.READ_ONLY | SWT.DROP_DOWN); languageCombo.add(Messages.RepositorySearchWizardPage_AnyLanguage); for (Language language : Language.values()) languageCombo.add(language.getValue()); languageCombo.select(0); Composite rowTwo = new Composite(root, SWT.NONE); GridLayoutFactory.fillDefaults().numColumns(2).applyTo(rowTwo); GridDataFactory.fillDefaults().grab(true, false).applyTo(rowTwo); searchText = new Text(rowTwo, SWT.SINGLE | SWT.BORDER); GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).applyTo(searchText); final Button searchButton = new Button(rowTwo, SWT.NONE); searchButton.setText(Messages.RepositorySearchWizardPage_SearchButton); searchButton.setEnabled(false); final TableViewer repoListViewer = new TableViewer(root); GridDataFactory.fillDefaults().grab(true, true).applyTo(repoListViewer.getControl()); repoListViewer.setContentProvider(new ArrayContentProvider()); repoListViewer.setLabelProvider(new DelegatingStyledCellLabelProvider(new IStyledLabelProvider() { private Image repoImage = UIIcons.REPOSITORY.createImage(); public void removeListener(ILabelProviderListener listener) { } public boolean isLabelProperty(Object element, String property) { return false; } public void dispose() { repoImage.dispose(); } public void addListener(ILabelProviderListener listener) { } public StyledString getStyledText(Object element) { StyledString styled = new StyledString(); SearchRepository repo = (SearchRepository) element; styled.append(repo.getOwner() + "/" + repo.getName()); //$NON-NLS-1$ String language = repo.getLanguage(); if (language != null && language.length() > 0) styled.append(" (" + language + ")", //$NON-NLS-1$ //$NON-NLS-2$ StyledString.QUALIFIER_STYLER); int forks = repo.getForks(); if (forks != 1) styled.append(MessageFormat.format(Messages.RepositorySearchWizardPage_Forks, forks), StyledString.COUNTER_STYLER); else styled.append(Messages.RepositorySearchWizardPage_Fork, StyledString.COUNTER_STYLER); int watchers = repo.getWatchers(); if (watchers != 1) styled.append(MessageFormat.format(Messages.RepositorySearchWizardPage_Watchers, watchers), StyledString.COUNTER_STYLER); else styled.append(Messages.RepositorySearchWizardPage_Watcher, StyledString.COUNTER_STYLER); return styled; } public Image getImage(Object element) { return repoImage; } })); repoListViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { validate(repoListViewer); } }); searchText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { searchButton.setEnabled(searchText.getText().trim().length() != 0); } }); searchButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent selectionEvent) { String language = null; if (languageCombo.getSelectionIndex() > 0) language = languageCombo.getText(); search(language, searchText.getText().trim(), repoListViewer); } }); setControl(root); } private void validate(TableViewer viewer) { ISelection selection = viewer.getSelection(); if (selection instanceof IStructuredSelection) { Object[] selected = ((IStructuredSelection) selection).toArray(); repositories = new SearchRepository[selected.length]; System.arraycopy(selected, 0, repositories, 0, selected.length); } setPageComplete(!selection.isEmpty()); } public void setVisible(boolean visible) { super.setVisible(visible); if (visible) searchText.setFocus(); } private void search(final String language, final String text, final TableViewer viewer) { viewer.setSelection(StructuredSelection.EMPTY); try { getContainer().run(true, true, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { monitor.beginTask(MessageFormat.format(Messages.RepositorySearchWizardPage_Searching, text), 10); try { final List<SearchRepository> repositories = repositoryService .searchRepositories(text.trim(), language); PlatformUI.getWorkbench().getDisplay().syncExec(new Runnable() { public void run() { if (viewer.getControl().isDisposed()) return; setMessage(MessageFormat.format(Messages.RepositorySearchWizardPage_Found, repositories.size()), INFORMATION); viewer.setInput(repositories); validate(viewer); } }); } catch (IOException e) { throw new InvocationTargetException(GitHubException.wrap(e)); } } }); setErrorMessage(null); } catch (InvocationTargetException e) { viewer.setInput(Collections.emptyList()); Throwable cause = e.getCause(); if (cause == null) cause = e; setErrorMessage( MessageFormat.format(Messages.RepositorySearchWizardPage_Error, cause.getLocalizedMessage())); } catch (InterruptedException e) { GitHubUi.logError(e); } } public GitRepositoryInfo getGitRepositoryInfo() throws NoRepositoryInfoException { String cloneUrl = null; try { Repository fullRepo = repositoryService.getRepository(repositories[0]); cloneUrl = fullRepo.getCloneUrl(); } catch (IOException e) { throw new NoRepositoryInfoException(e.getMessage(), e); } return new GitRepositoryInfo(cloneUrl); } }