001/* 002 * Copyright 2012 GWT-Bootstrap 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package com.github.gwtbootstrap.client.ui.event; 017 018import com.google.gwt.event.shared.GwtEvent; 019 020/** 021 * Represents an event that is fired when a widget has been closed. 022 * 023 * @author Dominik Mayer 024 * @author Danilo Reinert 025 * 026 * @see com.google.gwt.event.logical.shared.CloseEvent 027 * 028 * @since 2.0.4.0 029 */ 030public class ClosedEvent<T> extends GwtEvent<ClosedHandler<T>> { 031 032 private static final Type<ClosedHandler<?>> TYPE = new Type<ClosedHandler<?>>(); 033 034 public static Type<ClosedHandler<?>> getType() { 035 return TYPE; 036 } 037 038 /** 039 * Fires a closed event on all registered handlers in the handler manager. If 040 * no such handlers exist, this method will do nothing. 041 * 042 * @param <T> the target type 043 * @param source the source of the handlers 044 * @param target the target 045 */ 046 public static <T> void fire(HasCloseHandlers<T> source, T target) { 047 fire(source, target, false); 048 } 049 050 /** 051 * Fires a closed event on all registered handlers in the handler manager. 052 * 053 * @param <T> the target type 054 * @param source the source of the handlers 055 * @param target the target 056 * @param autoClosed was the target closed automatically 057 */ 058 public static <T> void fire(HasCloseHandlers<T> source, T target, 059 boolean autoClosed) { 060 if (TYPE != null) { 061 ClosedEvent<T> event = new ClosedEvent<T>(target, autoClosed); 062 source.fireEvent(event); 063 } 064 } 065 066 private final T target; 067 private final boolean autoClosed; 068 069 public ClosedEvent(T target, boolean autoClosed) { 070 this.target = target; 071 this.autoClosed = autoClosed; 072 } 073 074 // The instance knows its of type T, but the TYPE 075 // field itself does not, so we have to do an unsafe cast here. 076 @SuppressWarnings("unchecked") 077 @Override 078 public final Type<ClosedHandler<T>> getAssociatedType() { 079 return (Type) TYPE; 080 } 081 082 public T getTarget() { 083 return target; 084 } 085 086 public boolean isAutoClosed() { 087 return autoClosed; 088 } 089 090 @Override 091 protected void dispatch(ClosedHandler handler) { 092 handler.onClosed(this); 093 } 094 095}