Java tutorial
/******************************************************************************* * Copyright (C) 2012, Markus Duft <markus.duft@salomon.at> * * 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.clean; import java.lang.reflect.InvocationTargetException; import java.util.Set; import java.util.TreeSet; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.egit.core.internal.util.ProjectUtil; import org.eclipse.egit.ui.Activator; import org.eclipse.egit.ui.internal.UIText; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.jgit.api.CleanCommand; import org.eclipse.jgit.api.Git; import org.eclipse.jgit.api.errors.GitAPIException; import org.eclipse.jgit.lib.Repository; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; /** * A page for the Clean wizard presenting all things to be cleaned to the user. */ public class CleanRepositoryPage extends WizardPage { private Repository repository; private CheckboxTableViewer cleanTable; private boolean cleanDirectories; private boolean includeIgnored; /** * Creates a new page for the given repository. * @param repository repository to clean. */ public CleanRepositoryPage(Repository repository) { super(UIText.CleanRepositoryPage_title); this.repository = repository; setTitle(UIText.CleanRepositoryPage_title); setMessage(UIText.CleanRepositoryPage_message); } public void createControl(Composite parent) { Composite main = new Composite(parent, SWT.NONE); GridDataFactory.fillDefaults().grab(true, true).applyTo(main); main.setLayout(new GridLayout()); final Button radioCleanFiles = new Button(main, SWT.RADIO); radioCleanFiles.setText(UIText.CleanRepositoryPage_cleanFiles); GridDataFactory.fillDefaults().grab(true, false).applyTo(radioCleanFiles); final Button radioCleanDirs = new Button(main, SWT.RADIO); radioCleanDirs.setText(UIText.CleanRepositoryPage_cleanDirs); GridDataFactory.fillDefaults().grab(true, false).applyTo(radioCleanDirs); SelectionAdapter listener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { cleanDirectories = radioCleanDirs.getSelection(); updateCleanItems(); } }; radioCleanFiles.addSelectionListener(listener); radioCleanDirs.addSelectionListener(listener); radioCleanFiles.setSelection(true); final Image fileImage = PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE); final Image dirImage = PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER); cleanTable = CheckboxTableViewer.newCheckList(main, SWT.BORDER); cleanTable.setContentProvider(new ArrayContentProvider()); cleanTable.setLabelProvider(new LabelProvider() { @Override public Image getImage(Object element) { if (!(element instanceof String)) return null; if (((String) element).endsWith("/")) //$NON-NLS-1$ return dirImage; else return fileImage; } }); GridDataFactory.fillDefaults().grab(true, true).applyTo(cleanTable.getControl()); Composite lowerComp = new Composite(main, SWT.NONE); GridDataFactory.fillDefaults().grab(true, false).applyTo(lowerComp); lowerComp.setLayout(new GridLayout(3, false)); final Button checkIncludeIgnored = new Button(lowerComp, SWT.CHECK); checkIncludeIgnored.setText(UIText.CleanRepositoryPage_includeIgnored); GridDataFactory.fillDefaults().grab(true, false).applyTo(checkIncludeIgnored); checkIncludeIgnored.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { includeIgnored = checkIncludeIgnored.getSelection(); updateCleanItems(); } }); Button selAll = new Button(lowerComp, SWT.PUSH); selAll.setText(UIText.WizardProjectsImportPage_selectAll); GridDataFactory.defaultsFor(selAll).applyTo(selAll); Button selNone = new Button(lowerComp, SWT.PUSH); selNone.setText(UIText.WizardProjectsImportPage_deselectAll); GridDataFactory.defaultsFor(selNone).applyTo(selNone); selAll.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (cleanTable.getInput() instanceof Set<?>) { Set<?> input = (Set<?>) cleanTable.getInput(); cleanTable.setCheckedElements(input.toArray()); } } }); selNone.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { cleanTable.setCheckedElements(new Object[0]); } }); setControl(main); } @Override public void setVisible(boolean visible) { super.setVisible(visible); if (visible) getShell().getDisplay().asyncExec(new Runnable() { public void run() { updateCleanItems(); } }); } private void updateCleanItems() { try { getContainer().run(true, false, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { monitor.beginTask(UIText.CleanRepositoryPage_findingItems, IProgressMonitor.UNKNOWN); Git git = Git.wrap(repository); CleanCommand command = git.clean().setDryRun(true); command.setCleanDirectories(cleanDirectories); command.setIgnore(!includeIgnored); try { final Set<String> paths = command.call(); getShell().getDisplay().syncExec(new Runnable() { public void run() { cleanTable.setInput(paths); } }); } catch (GitAPIException ex) { Activator.logError("cannot call clean command!", ex); //$NON-NLS-1$ } monitor.done(); } }); } catch (InvocationTargetException e) { Activator.logError("Unexpected exception while finding items to clean", e); //$NON-NLS-1$ clearPage(); } catch (InterruptedException e) { clearPage(); } } private void clearPage() { cleanTable.setInput(null); } /** * Retrieves the items that the user chose to clean. * @return the items to clean. */ public Set<String> getItemsToClean() { Set<String> result = new TreeSet<String>(); for (Object ele : cleanTable.getCheckedElements()) { String str = ele.toString(); if (str.endsWith("/")) //$NON-NLS-1$ result.add(str.substring(0, str.length() - 1)); else result.add(str); } return result; } /** * Do the cleaning with the selected values. */ public void finish() { try { final Set<String> itemsToClean = getItemsToClean(); getContainer().run(true, false, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { monitor.beginTask(UIText.CleanRepositoryPage_cleaningItems, IProgressMonitor.UNKNOWN); Git git = Git.wrap(repository); CleanCommand command = git.clean().setDryRun(false); command.setCleanDirectories(cleanDirectories); command.setIgnore(!includeIgnored); command.setPaths(itemsToClean); try { command.call(); } catch (GitAPIException ex) { Activator.logError("cannot call clean command!", ex); //$NON-NLS-1$ } try { IProject[] projects = ProjectUtil.getProjectsContaining(repository, itemsToClean); ProjectUtil.refreshResources(projects, new SubProgressMonitor(monitor, 1)); } catch (CoreException e) { // could not refresh... not a "real" problem } monitor.done(); } }); } catch (Exception e) { Activator.logError("Unexpected exception while cleaning", e); //$NON-NLS-1$ } } }