Java tutorial
/* * Copyright (c) 2012, the Dart project authors. * * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html * * 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.google.dart.eclipse.wizards; import com.google.dart.tools.core.generator.AbstractSample; import com.google.dart.tools.ui.DartToolsPlugin; import com.google.dart.tools.ui.internal.projects.SamplesLabelProvider; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.jface.dialogs.IDialogSettings; 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.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.List; class SamplesComposite extends Composite { private static final String NEW_APPPLICATION_SETTINGS = "newApplicationWizard.settings"; //$NON-NLS-1$ private static final String CONTENT_GENERATION_DISABLED = "contentGenerationDisabled"; //$NON-NLS-1$ private WizardPage page; private Button addSampleContentCheckbox; private TableViewer samplesViewer; public SamplesComposite(WizardPage page, Composite parent, int style) { super(parent, style); this.page = page; initialize(); } protected AbstractSample getCurrentSample() { if (addSampleContentCheckbox.getSelection()) { IStructuredSelection selection = (IStructuredSelection) samplesViewer.getSelection(); if (selection.isEmpty()) { return null; } else { return (AbstractSample) selection.getFirstElement(); } } else { return null; } } private void createSampleGroup() { Group contentGroup = new Group(this, SWT.NONE); contentGroup.setText("Sample content"); GridDataFactory.fillDefaults().span(3, 1).grab(true, false).applyTo(contentGroup); GridLayoutFactory.fillDefaults().margins(8, 8).applyTo(contentGroup); addSampleContentCheckbox = new Button(contentGroup, SWT.CHECK); addSampleContentCheckbox.setText("Create sample content"); addSampleContentCheckbox.setSelection(getGenerateContentPreference()); addSampleContentCheckbox.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { IDialogSettings settings = DartToolsPlugin.getDefault() .getDialogSettingsSection(NEW_APPPLICATION_SETTINGS); settings.put(CONTENT_GENERATION_DISABLED, !addSampleContentCheckbox.getSelection()); updateMessageAndEnablement(); } }); Label spacer = new Label(contentGroup, SWT.SEPARATOR | SWT.HORIZONTAL); GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.CENTER).applyTo(spacer); samplesViewer = new TableViewer(contentGroup, SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER | SWT.FULL_SELECTION); samplesViewer.setLabelProvider(new SamplesLabelProvider()); samplesViewer.setContentProvider(new ArrayContentProvider()); samplesViewer.setInput(new ArrayList<AbstractSample>()); GridDataFactory.fillDefaults().hint(300, 90).grab(true, false).align(SWT.FILL, SWT.CENTER) .applyTo(samplesViewer.getControl()); samplesViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateMessageAndEnablement(); } }); samplesViewer.getTable().setEnabled(addSampleContentCheckbox.getSelection()); Display.getDefault().asyncExec(new Runnable() { @Override public void run() { populateSamplesList(); } }); } private AbstractSample getDefaultSample(List<AbstractSample> samples) { for (AbstractSample sample : samples) { if (sample.shouldBeDefault()) { return sample; } } return samples.get(0); } private boolean getGenerateContentPreference() { IDialogSettings settings = DartToolsPlugin.getDefault().getDialogSettingsSection(NEW_APPPLICATION_SETTINGS); return !settings.getBoolean(CONTENT_GENERATION_DISABLED); } private void initialize() { GridData gridData1 = new GridData(); gridData1.heightHint = -1; GridData gridData = new GridData(); gridData.horizontalSpan = 2; gridData.horizontalAlignment = GridData.FILL; gridData.verticalAlignment = GridData.CENTER; gridData.grabExcessHorizontalSpace = true; GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 3; gridLayout.horizontalSpacing = 5; gridLayout.marginWidth = 0; gridLayout.marginHeight = 0; gridLayout.verticalSpacing = 10; setLayout(gridLayout); createSampleGroup(); setSize(new Point(449, 311)); } private void populateSamplesList() { try { page.getWizard().getContainer().run(true, false, new IRunnableWithProgress() { @Override public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { monitor.beginTask("", IProgressMonitor.UNKNOWN); final List<AbstractSample> samples = AbstractSample.getAllSamples(); Display.getDefault().asyncExec(new Runnable() { @Override public void run() { samplesViewer.setInput(samples); samplesViewer.setSelection(new StructuredSelection(getDefaultSample(samples))); } }); monitor.done(); } }); } catch (InvocationTargetException e) { DartToolsPlugin.log(e); } catch (InterruptedException e) { DartToolsPlugin.log(e); } } private void updateMessageAndEnablement() { samplesViewer.getTable().setEnabled(addSampleContentCheckbox.getSelection()); } }