litesoft
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// This Source Code is Copyright & Licenced as indicated below package org.litesoft.GWT.client.widgets.nonpublic.external; /* * Copyright 2006 Mat Gessel <mat.gessel@gmail.com> * * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 * * 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. */ import com.google.gwt.user.client.*; import com.google.gwt.user.client.EventListener; import com.google.gwt.user.client.ui.*; import java.util.*; /** * A delegate class which manages controller bookkeeping and lifecycle. * Ideally, this fuctionality would be in a superclass like * {@link com.google.gwt.user.client.ui.Widget Widget}. */ public class ControllerSupportDelegate { private final Widget m_widget; private List<Controller> m_controllers; private int m_legacyEventBits = 0; // private boolean m_processing = false; /** * Creates a delegate for the specified widget. */ public ControllerSupportDelegate( Widget widget ) { m_widget = widget; m_legacyEventBits = DOM.getEventsSunk( widget.getElement() ); } /** * Gets the event bits which were sunk on the widget itself. Used to * determine which events should be passed to a widget's * {@link EventListener#onBrowserEvent(Event) onBrowserEvent()} method. This * can happen when subclassing or wrapping a widget. * * @return a bitmask of the event types * * @see Event */ public int getLegacyEventBits() { return m_legacyEventBits; } private void sinkAllBits() { int controllerEventBits = 0; if ( m_controllers != null ) { for ( int i = 0, size = m_controllers.size(); i < size; i++ ) { controllerEventBits |= m_controllers.get( i ).getEventBits(); } } DOM.sinkEvents( m_widget.getElement(), m_legacyEventBits | controllerEventBits ); } public void sinkEvents( int eventBits ) { m_legacyEventBits |= eventBits; DOM.sinkEvents( m_widget.getElement(), DOM.getEventsSunk( m_widget.getElement() ) | m_legacyEventBits ); } public void unsinkEvents( int eventBits ) { m_legacyEventBits &= ~eventBits; sinkAllBits(); } public Controller getController( Class id ) { for ( int i = 0, size = m_controllers.size(); i < size; i++ ) { if ( m_controllers.get( i ).getId() == id ) { return m_controllers.get( i ); } } return null; } /** * @throws IllegalArgumentException if <code>controller</code> is null */ public Widget addController( Controller controller ) { if ( controller == null ) { throw new IllegalArgumentException(); } if ( m_controllers == null ) { m_controllers = new ArrayList<Controller>(); } m_controllers.add( controller ); DOM.sinkEvents( m_widget.getElement(), DOM.getEventsSunk( m_widget.getElement() ) | controller.getEventBits() ); // adding bits is easy if ( m_widget.isAttached() ) { controller.plugIn( m_widget ); } return m_widget; } /** * @throws IllegalArgumentException if <code>controller</code> is not present */ public Widget removeController( Controller controller ) { int index = -1; if ( m_controllers != null ) { index = m_controllers.indexOf( controller ); } if ( index == -1 ) { throw new IllegalArgumentException(); } m_controllers.remove( index ); if ( m_widget.isAttached() ) { controller.unplug( m_widget ); } sinkAllBits(); return m_widget; } public void setControllers( List controllers ) { if ( m_widget.isAttached() ) { unplugControllers(); } m_controllers = null; if ( controllers != null ) { m_controllers = new ArrayList<Controller>(); for ( int i = 0, size = controllers.size(); i < size; i++ ) { m_controllers.add( (Controller) controllers.get( i ) ); } } if ( m_widget.isAttached() ) { plugInControllers(); } sinkAllBits(); } private void plugInControllers() { if ( m_controllers != null ) { for ( int i = 0, size = m_controllers.size(); i < size; i++ ) { m_controllers.get( i ).plugIn( m_widget ); } } } private void unplugControllers() { if ( m_controllers != null ) { for ( int i = m_controllers.size() - 1; i >= 0; i-- ) { m_controllers.get( i ).unplug( m_widget ); } } } public void onAttach() { plugInControllers(); } // /** // * @throws IllegalStateException if the widget is detached while controllers // * are processing an event. To prevent this from happening, use // * {@link com.google.gwt.user.client.DeferredCommand DeferredCommand} // * to remove the widget. // */ public void onDetach() { // if (m_processing) // throw new IllegalStateException("Detach called while calling onBrowserEvent(Event event)"); // unplugControllers(); } public void onBrowserEvent( Event event ) { if ( m_controllers != null ) { // m_processing = true; for ( int i = 0, size = m_controllers.size(); i < size; i++ ) { Controller controller = m_controllers.get( i ); if ( (controller.getEventBits() & DOM.eventGetType( event )) != 0 ) { controller.onBrowserEvent( m_widget, event ); } } // m_processing = false; } } } |
Commits for litesoft/trunk/Java/GWT/Client/src/org/litesoft/GWT/client/widgets/nonpublic/external/ControllerSupportDelegate.java
Revision | Author | Commited | Message |
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950 Diff | GeorgeS | Thu 19 Jun, 2014 17:57:04 +0000 | New Lines |
948 Diff | GeorgeS | Sat 07 Jun, 2014 23:42:39 +0000 | Jusefuls Formatter Updated to New Code Format |
151 Diff | GeorgeS | Thu 17 Mar, 2011 04:16:22 +0000 | |
49 Diff | GeorgeS | Mon 12 Apr, 2010 02:59:10 +0000 | License Text |
23 Diff | GeorgeS | Wed 24 Feb, 2010 00:34:32 +0000 | |
2 | GeorgeS | Sun 07 Feb, 2010 12:50:58 +0000 |