litesoft
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/* * Copyright 2008 Google Inc. * * 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. */ package com.google.gwt.gen2.event.dom.client; import com.google.gwt.gen2.event.shared.*; import com.google.gwt.gen2.event.shared.AbstractEvent.*; import com.google.gwt.user.client.ui.*; import java.util.*; /** * legacy listener support for dom events. Will eventually be moved into * user.ui. * * @param <ListenerType> listener type */ abstract class ListenerWrapperImpl<ListenerType> implements EventHandler { static class Click extends ListenerWrapperImpl<ClickListener> implements ClickHandler { public static void removeWrappedListener( HasHandlerManager eventSource, ClickListener listener ) { removeWrappedListene( eventSource, listener, ClickEvent.TYPE ); } protected Click( ClickListener listener ) { super( listener ); } public void onClick( ClickEvent event ) { listener.onClick( source( event ) ); } } /* * Handler wrapper for {@link FocusListener}. */ static class Focus extends ListenerWrapperImpl<FocusListener> implements FocusHandler, BlurHandler { public Focus( FocusListener listener ) { super( listener ); } public void onBlur( BlurEvent event ) { listener.onLostFocus( source( event ) ); } public void onFocus( FocusEvent event ) { listener.onFocus( source( event ) ); } } static class Keyboard extends ListenerWrapperImpl<KeyboardListener> implements KeyDownHandler, KeyUpHandler, KeyPressHandler { public static void removeWrappedListener( HasHandlerManager eventSource, KeyboardListener listener ) { ListenerWrapperImpl.removeWrappedListene( eventSource, listener, KeyDownEvent.TYPE, KeyUpEvent.TYPE, KeyPressEvent.TYPE ); } public Keyboard( KeyboardListener listener ) { super( listener ); } public void onKeyDown( KeyDownEvent event ) { listener.onKeyDown( source( event ), (char) event.getKeyCode(), event.getKeyModifiers() ); } public void onKeyPress( KeyPressEvent event ) { listener.onKeyPress( source( event ), (char) event.getNativeEvent().getKeyCode(), event.getKeyModifiers() ); } public void onKeyUp( KeyUpEvent event ) { source( event ); listener.onKeyUp( source( event ), (char) event.getKeyCode(), event.getKeyModifiers() ); } } static class Mouse extends ListenerWrapperImpl<MouseListener> implements MouseDownHandler, MouseUpHandler, MouseOutHandler, MouseOverHandler, MouseMoveHandler { public static <EventSourceType extends HasHandlerManager & HasMouseDownHandlers & HasMouseUpHandlers & HasMouseOutHandlers & HasMouseOverHandlers & HasMouseMoveHandlers, HandlerType extends MouseDownHandler & MouseUpHandler & MouseOutHandler & MouseOverHandler & MouseMoveHandler> void addHandlers( EventSourceType source, HandlerType handlers ) { source.addMouseDownHandler( handlers ); source.addMouseUpHandler( handlers ); source.addMouseOutHandler( handlers ); source.addMouseOverHandler( handlers ); source.addMouseMoveHandler( handlers ); } public static void remove( HasHandlerManager eventSource, MouseListener listener ) { removeWrappedListene( eventSource, listener, MouseDownEvent.TYPE, MouseUpEvent.TYPE, MouseOverEvent.TYPE, MouseOutEvent.TYPE ); } protected Mouse( MouseListener listener ) { super( listener ); } public void onMouseDown( MouseDownEvent event ) { listener.onMouseDown( source( event ), event.getClientX(), event.getScreenY() ); } public void onMouseMove( MouseMoveEvent event ) { listener.onMouseMove( source( event ), event.getClientX(), event.getClientY() ); } public void onMouseOut( MouseOutEvent event ) { listener.onMouseLeave( source( event ) ); } public void onMouseOver( MouseOverEvent event ) { listener.onMouseEnter( source( event ) ); } public void onMouseUp( MouseUpEvent event ) { listener.onMouseUp( source( event ), event.getClientX(), event.getClientY() ); } } protected static void removeWrappedListene( HasHandlerManager eventSource, EventListener listener, Type... keys ) { HandlerManager manager = eventSource.getHandlerManager(); for ( Type key : keys ) { int handlerCount = manager.getHandlerCount( key ); for ( int i = 0; i < handlerCount; i++ ) { EventHandler handler = manager.getHandler( key, i ); if ( handler instanceof ListenerWrapperImpl && ((ListenerWrapperImpl) handler).listener.equals( listener ) ) { manager.removeHandler( key, handler ); } } } } protected final ListenerType listener; ListenerWrapperImpl( ListenerType listener ) { this.listener = listener; } Widget source( AbstractEvent e ) { return (Widget) e.getSource(); } } |