Java tutorial
/******************************************************************************* * Copyright (c) 2009, 2010 Progress Software Corporation. * 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 ******************************************************************************/ // Copyright (c) 2009 Progress Software Corporation. package org.fusesource.tools.messaging.ui; import java.util.ArrayList; import java.util.Collection; import java.util.List; import org.eclipse.emf.common.command.Command; import org.eclipse.emf.ecore.EAttribute; import org.eclipse.emf.edit.command.CommandParameter; import org.eclipse.emf.edit.command.CreateChildCommand; import org.eclipse.emf.edit.command.DeleteCommand; import org.eclipse.emf.edit.command.SetCommand; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ICellEditorListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; 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.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.fusesource.tools.core.message.Message; import org.fusesource.tools.core.message.MessagePackage; import org.fusesource.tools.core.message.Properties; import org.fusesource.tools.core.message.Property; import org.fusesource.tools.message.editors.MessageEditorConstants; import org.fusesource.tools.message.editors.MessageEditorPageBean; import org.fusesource.tools.message.extensions.IMessageEditorExtension; import org.fusesource.tools.messaging.IConstants; public class SimpleMessageEditorExtension implements IMessageEditorExtension { protected int count = -1; protected TableViewer propertiesTableViewer; protected Composite propertiesComposite = null; protected EditingDomain editingDomain; protected Message messageModel; public void createBody(Composite parent, EditingDomain editingDomain, Message messageModel) { parent.setLayout(new GridLayout(1, false)); Label label = new Label(parent, SWT.NONE); label.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false)); label.setText("This message type does not support body. Please configure headers in the Headers tab."); } public Collection<MessageEditorPageBean> getEditorPages(Composite container, EditingDomain editingDomain, Message messageModel) { this.editingDomain = editingDomain; this.messageModel = messageModel; List<MessageEditorPageBean> list = new ArrayList<MessageEditorPageBean>(); list.add(new MessageEditorPageBean(MessageEditorConstants.HEADER, createPropertiesTab(container, editingDomain))); return list; } protected Composite createPropertiesTab(Composite parent, final EditingDomain editingDomain) { propertiesComposite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); propertiesComposite.setLayout(layout); layout.numColumns = 1; Group propertiesGroup = new Group(propertiesComposite, SWT.NONE); propertiesGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); propertiesGroup.setLayout(new GridLayout(3, false)); propertiesGroup.setText("Headers"); propertiesTableViewer = new DefaultMessageTableViewer(propertiesGroup, SWT.FULL_SELECTION, IConstants.EMPTY_STRING); propertiesTableViewer.addFilter(new PropertyFilter()); buildTable(propertiesTableViewer, propertiesGroup, editingDomain, false); if (messageModel != null && messageModel.getProperties() != null) { propertiesTableViewer.setInput(messageModel.getProperties()); } return propertiesComposite; } protected void buildTable(final TableViewer tableViewer, Group group, final EditingDomain editingDomain, boolean isHeader) { GridData data = new GridData(); data.grabExcessHorizontalSpace = true; data.grabExcessVerticalSpace = true; data.horizontalAlignment = SWT.FILL; data.verticalAlignment = SWT.FILL; ((DefaultMessageTableViewer) tableViewer).refreshTable("Name;Value"); Table table = tableViewer.getTable(); table.setLayoutData(data); table.setLinesVisible(true); final CellEditor[] editors = new CellEditor[2]; editors[0] = new TextCellEditor(table); editors[1] = new TextCellEditor(table); editors[1].addListener(new ICellEditorListener() { public void applyEditorValue() { } public void cancelEditor() { } public void editorValueChanged(boolean oldValidState, boolean newValidState) { IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection(); Property property = (Property) selection.getFirstElement(); modifyProperty((String) editors[1].getValue(), property, MessagePackage.eINSTANCE.getProperty_Value()); } }); editors[0].addListener(new ICellEditorListener() { public void applyEditorValue() { } public void cancelEditor() { } public void editorValueChanged(boolean oldValidState, boolean newValidState) { IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection(); Property property = (Property) selection.getFirstElement(); modifyProperty((String) editors[0].getValue(), property, MessagePackage.eINSTANCE.getProperty_Name()); } }); tableViewer.setColumnProperties(new String[] { "Name", "Value" }); tableViewer.setCellModifier(new HeadersModifierSupport(tableViewer)); tableViewer.setCellEditors(editors); Composite buttonComposite = new Composite(group, SWT.NONE); data = new GridData(); data.horizontalSpan = 1; data.grabExcessVerticalSpace = true; data.verticalAlignment = SWT.FILL; buttonComposite.setLayoutData(data); GridLayout gridLayout = new GridLayout(); buttonComposite.setLayout(gridLayout); gridLayout.numColumns = 1; propertyOperations(tableViewer, buttonComposite); tableViewer.setContentProvider(new HeadersContentProvider()); tableViewer.setLabelProvider(new HeadersLabelProvider()); } /** * * @param tableViewer * @param buttonComposite */ protected void propertyOperations(final TableViewer tableViewer, Composite buttonComposite) { GridData data; final Button addProperty = new Button(buttonComposite, SWT.PUSH); addProperty.setText(" Add "); data = new GridData(); data.horizontalSpan = 1; data.verticalAlignment = SWT.TOP; addProperty.setLayoutData(data); final Button deleteProperty = new Button(buttonComposite, SWT.PUSH); deleteProperty.setText("Delete"); data = new GridData(); data.verticalAlignment = SWT.TOP; data.horizontalSpan = 1; deleteProperty.setLayoutData(data); addProperty.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { if (event.widget == addProperty) { createNewDefaultHeader(getMessageModel().getProperties()); tableViewer.refresh(); propertiesTableViewer.refresh(); } } }); deleteProperty.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { if (event.widget == deleteProperty) { int selectionIndex = tableViewer.getTable().getSelectionIndex(); Object elementAt = tableViewer.getElementAt(selectionIndex); if (elementAt instanceof Property) { Property property = (Property) elementAt; deleteProperty(property); tableViewer.refresh(); } } } }); } /** * * @param properties */ protected void createNewDefaultHeader(Properties properties) { Collection<?> newChildDescriptors = getEditingDomain().getNewChildDescriptors(properties, null); CommandParameter commandParameter = null; for (Object object : newChildDescriptors) { Object value = ((CommandParameter) object).getValue(); if (value instanceof Property) { commandParameter = (CommandParameter) object; Property property = (Property) value; property.setName("new_name_" + ++count); property.setValue("new_value_" + count); property.setIsheader(false); break; } } Command create = CreateChildCommand.create(getEditingDomain(), properties, commandParameter, new StructuredSelection(properties).toList()); getEditingDomain().getCommandStack().execute(create); propertiesTableViewer.refresh(); } /** * modify the property name in the model * * @param name * @param property * @param attribute */ protected void modifyProperty(String value, Property property, EAttribute attribute) { Command command = SetCommand.create(getEditingDomain(), property, attribute, value); getEditingDomain().getCommandStack().execute(command); } /** * @param property */ protected void deleteProperty(Property property) { Command create = DeleteCommand.create(getEditingDomain(), property); editingDomain.getCommandStack().execute(create); } /** * @return the editingDomain */ public EditingDomain getEditingDomain() { return editingDomain; } /** * @return the messageModel */ public Message getMessageModel() { return messageModel; } protected class PropertyFilter extends ViewerFilter { public PropertyFilter() { } @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (element instanceof Property) { Property property = (Property) element; if (!property.isIsheader()) { return true; } } return false; } } }