| /****************************************************************************** |
| * Copyright � 2010-2011 Austin Riddle |
| * 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: |
| * Austin Riddle - initial API and implementation |
| * |
| *****************************************************************************/ |
| package org.eclipse.rap.rwt.visualization.jit.internal; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Vector; |
| |
| import org.eclipse.rap.rwt.internal.protocol.ClientObjectFactory; |
| import org.eclipse.rap.rwt.internal.protocol.IClientObject; |
| import org.eclipse.rap.rwt.lifecycle.AbstractWidgetLCA; |
| import org.eclipse.rap.rwt.lifecycle.ControlLCAUtil; |
| import org.eclipse.rap.rwt.lifecycle.IWidgetAdapter; |
| import org.eclipse.rap.rwt.lifecycle.WidgetLCAUtil; |
| import org.eclipse.rap.rwt.lifecycle.WidgetUtil; |
| import org.eclipse.rap.rwt.visualization.jit.JITVisualizationWidget; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Widget; |
| |
| public abstract class JITWidgetLCA extends AbstractWidgetLCA { |
| |
| private static final String WIDGET_DATA = "widgetData"; |
| private static final String PROP_VISIBLE = "visible"; |
| |
| private static final String[] ALLOWED_STYLES = new String[] { "BORDER" }; |
| |
| public abstract Class getWidgetType(); |
| |
| protected Collection getInitializationParameters (JITVisualizationWidget vWidget) { |
| ArrayList params = new ArrayList(); |
| String id = WidgetUtil.getId( vWidget ); |
| params.add(id); |
| return params; |
| } |
| |
| public void renderInitialization( final Widget widget ) throws IOException { |
| Control control = (Control)widget; |
| IClientObject clientObject = ClientObjectFactory.getClientObject( control ); |
| clientObject.create( getWidgetType().getCanonicalName() ); |
| // clientObject.set( "id", WidgetUtil.getId( control ) ); |
| clientObject.set( "parent", WidgetUtil.getId( control.getParent() ) ); |
| clientObject.set( "style", WidgetLCAUtil.getStyles( control, ALLOWED_STYLES ) ); |
| } |
| |
| public void preserveValues( final Widget widget ) { |
| JITVisualizationWidget vWidget = (JITVisualizationWidget)widget; |
| ControlLCAUtil.preserveValues( vWidget ); |
| IWidgetAdapter adapter = WidgetUtil.getAdapter( vWidget ); |
| adapter.preserve( PROP_VISIBLE, String.valueOf(vWidget.isVisible())); |
| adapter.preserve( WIDGET_DATA, vWidget.getJSONData()); |
| // only needed for custom variants (theming) |
| WidgetLCAUtil.preserveCustomVariant( vWidget ); |
| } |
| |
| public void renderChanges( final Widget widget ) throws IOException { |
| ControlLCAUtil.renderChanges( ( Control )widget ); |
| WidgetLCAUtil.renderCustomVariant( widget ); |
| |
| JITVisualizationWidget vWidget = ( JITVisualizationWidget )widget; |
| IClientObject clientObject = ClientObjectFactory.getClientObject( vWidget ); |
| IWidgetAdapter adapter = WidgetUtil.getAdapter(widget); |
| boolean changed = !adapter.isInitialized() || WidgetLCAUtil.hasChanged(widget, PROP_VISIBLE, vWidget.isVisible()); |
| if (changed) { |
| clientObject.set(PROP_VISIBLE, vWidget.isVisible()); |
| } |
| changed = WidgetLCAUtil.hasChanged(widget, WIDGET_DATA, vWidget.getJSONData()); |
| if (changed) { |
| clientObject.set(WIDGET_DATA, vWidget.getJSONData()); |
| } |
| |
| WidgetCommandQueue cmdQueue = (WidgetCommandQueue) vWidget.getAdapter(WidgetCommandQueue.class); |
| if (cmdQueue != null) { |
| while (cmdQueue.peek() != null) { |
| Object[] functionCall = (Object[])cmdQueue.poll(); |
| clientObject.call((String)functionCall[0], (Map<String,Object>)functionCall[1]); |
| } |
| } |
| } |
| |
| public void renderDispose( final Widget widget ) throws IOException { |
| ClientObjectFactory.getClientObject( widget ).destroy(); |
| } |
| |
| public void createResetHandlerCalls( String typePoolId ) throws IOException { |
| //noop |
| } |
| |
| public String getTypePoolId( Widget widget ) { |
| return null; |
| } |
| |
| /** |
| * Respond to selection events, set the value of selectedItem on the widget Java object, |
| * and broadcast a SWT.Selection event to any listeners |
| */ |
| public void readData( final Widget widget ) { |
| if (widget==null) return; |
| JITVisualizationWidget visWidget = ( JITVisualizationWidget )widget; |
| String selectedNode = WidgetLCAUtil.readPropertyValue( visWidget, "selectedNode" ); |
| if (selectedNode!=null) { |
| visWidget.setData("selectedNode", selectedNode); |
| ControlLCAUtil.processSelection( visWidget, null, true ); |
| } |
| } |
| |
| public static class WidgetCommandQueue extends Vector { |
| private static final long serialVersionUID = -2296255246437590610L; |
| |
| public WidgetCommandQueue() { |
| super(5); |
| } |
| |
| public synchronized Object peek () { |
| if (size() > 0) |
| return get(0); |
| return null; |
| } |
| |
| public synchronized Object poll () { |
| if (size() > 0) |
| return remove(0); |
| return null; |
| } |
| } |
| |
| } |