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.tools.ui.web.pubspec; import com.google.dart.tools.core.pub.DependencyObject; import com.google.dart.tools.core.pub.IModelListener; import com.google.dart.tools.core.pub.PubspecModel; import com.google.dart.tools.ui.web.DartWebPlugin; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IInputValidator; import org.eclipse.jface.dialogs.InputDialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.PixelConverter; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.window.Window; 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.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.ui.forms.DetailsPart; import org.eclipse.ui.forms.IManagedForm; import org.eclipse.ui.forms.MasterDetailsBlock; import org.eclipse.ui.forms.SectionPart; import org.eclipse.ui.forms.editor.FormPage; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section; /** * The Master block for the dependencies - lists all the dependencies */ public class DependenciesMasterBlock extends MasterDetailsBlock implements IModelListener { class MasterContentProvider implements IStructuredContentProvider { @Override public void dispose() { } @Override public Object[] getElements(Object inputElement) { if (model != null) { return model.getDependecies(); } return new Object[0]; } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } } class MasterLabelProvider extends LabelProvider implements ITableLabelProvider { @Override public Image getColumnImage(Object obj, int index) { if (obj instanceof DependencyObject) { return DartWebPlugin.getImage("pubspec.png"); } return null; } @Override public String getColumnText(Object obj, int index) { return obj.toString(); } } private class AddPackageDialog extends InputDialog { public AddPackageDialog(Shell parentShell, String dialogTitle, String dialogMessage, String initialValue, IInputValidator validator) { super(parentShell, dialogTitle, dialogMessage, initialValue, validator); } @Override protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); Label label = new Label(composite, SWT.NONE); label.setText("For example, unittest, web_ui, ..."); label.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false)); Label imageLabel = new Label(composite, SWT.NONE); imageLabel.setImage(DartWebPlugin.getImage("pub_package.png")); imageLabel.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); return composite; } } private FormPage page; private PubspecModel model; private TableViewer viewer; private SectionPart sectionPart; public DependenciesMasterBlock(FormPage page) { this.page = page; model = ((PubspecEditor) page.getEditor()).getModel(); } @Override public void createContent(IManagedForm managedForm, Composite parent) { super.createContent(managedForm, parent); sashForm.setWeights(new int[] { 40, 60 }); } public TableViewer getViewer() { return viewer; } @Override public void modelChanged(Object[] objects, String type) { viewer.refresh(); if (type.equals(IModelListener.ADDED)) { viewer.setSelection(new StructuredSelection(objects[0])); } if (type.equals(IModelListener.REMOVED) && model.getDependecies().length > 0) { viewer.setSelection(new StructuredSelection(model.getDependecies()[0])); } } @Override protected void applyLayout(final Composite parent) { GridLayout layout = new GridLayout(); layout.marginLeft = 5; layout.marginBottom = 5; parent.setLayout(layout); } @Override protected void createMasterPart(final IManagedForm managedForm, Composite parent) { FormToolkit toolkit = managedForm.getToolkit(); Section section = toolkit.createSection(parent, Section.DESCRIPTION | Section.TITLE_BAR); section.setText("Dependencies"); //$NON-NLS-1$ section.setDescription("Specify all the packages required by this package"); //$NON-NLS-1$ section.marginHeight = 5; Composite client = toolkit.createComposite(section, SWT.WRAP); GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.marginWidth = 2; layout.marginHeight = 2; client.setLayout(layout); Table t = toolkit.createTable(client, SWT.NULL); GridData gd = new GridData(GridData.FILL_BOTH); gd.heightHint = 20; gd.widthHint = 100; t.setLayoutData(gd); toolkit.paintBordersFor(client); Composite buttonGroup = toolkit.createComposite(client); gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING); buttonGroup.setLayoutData(gd); buttonGroup.setLayout(new GridLayout()); Button addButton = toolkit.createButton(buttonGroup, "Add...", SWT.PUSH); addButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); addButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { handleAddDependency(); } }); PixelConverter converter = new PixelConverter(addButton); int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH); GridDataFactory.swtDefaults().hint(widthHint, -1).applyTo(addButton); Button b = toolkit.createButton(buttonGroup, "Remove", SWT.PUSH); b.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); b.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { handleRemoveDependency(); } }); GridDataFactory.swtDefaults().hint(widthHint, -1).applyTo(b); section.setClient(client); sectionPart = new SectionPart(section); managedForm.addPart(sectionPart); viewer = new TableViewer(t); viewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { managedForm.fireSelectionChanged(sectionPart, event.getSelection()); } }); viewer.setContentProvider(new MasterContentProvider()); viewer.setLabelProvider(new MasterLabelProvider()); viewer.setComparator(new ViewerComparator()); viewer.setInput(page.getEditor().getEditorInput()); model.addModelListener(this); } @Override protected void createToolBarActions(IManagedForm managedForm) { } @Override protected void registerPages(DetailsPart detailsPart) { detailsPart.registerPage(DependencyObject.class, new DependencyDetailsPage()); } private void handleAddDependency() { AddPackageDialog inputDialog = new AddPackageDialog(page.getSite().getShell(), "Add Dependency", "Enter the name of package:", "", null); if (inputDialog.open() != Window.OK) { return; } model.add(new DependencyObject[] { new DependencyObject(inputDialog.getValue()) }, IModelListener.ADDED); sectionPart.markDirty(); } private void handleRemoveDependency() { ISelection selection = viewer.getSelection(); if (!selection.isEmpty() && selection instanceof StructuredSelection) { DependencyObject o = (DependencyObject) ((StructuredSelection) selection).getFirstElement(); model.remove(new DependencyObject[] { o }, true); sectionPart.markDirty(); } } }