| /* |
| * Copyright 2013 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.uibinder.test.client; |
| |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.HANDLER; |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.HANDLER_LIST_T; |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.HANDLER_STRING; |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.HANDLER_T; |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.HANDLER_WILDCARD; |
| import static com.google.gwt.uibinder.test.client.ValueChangeWidget.HandlerType.SELECT_HANDLER_T; |
| |
| import com.google.gwt.dom.client.Document; |
| import com.google.gwt.event.logical.shared.SelectionHandler; |
| import com.google.gwt.event.logical.shared.ValueChangeHandler; |
| import com.google.gwt.event.shared.HandlerRegistration; |
| import com.google.gwt.user.client.ui.FocusWidget; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A Widget that has parameterized event handlers. |
| * |
| * @param <T> type for the value |
| */ |
| public class ValueChangeWidget<T> extends FocusWidget { |
| |
| enum HandlerType { |
| HANDLER, HANDLER_WILDCARD, HANDLER_STRING, HANDLER_T, HANDLER_LIST_T, SELECT_HANDLER_T, |
| } |
| |
| private Map<HandlerType, Integer> handlers = new HashMap<HandlerType, Integer>(); |
| |
| protected ValueChangeWidget() { |
| super(Document.get().createDivElement()); |
| } |
| |
| public HandlerRegistration addValueHandler(ValueChangeHandler handler) { |
| return addHander(HANDLER); |
| } |
| |
| public HandlerRegistration addValueHandlerT(ValueChangeHandler<T> handler) { |
| return addHander(HANDLER_T); |
| } |
| |
| public HandlerRegistration addValueHandlerListT(ValueChangeHandler<List<T>> handler) { |
| return addHander(HANDLER_LIST_T); |
| } |
| |
| public HandlerRegistration addValueHandlerString(ValueChangeHandler<String> handler) { |
| return addHander(HANDLER_STRING); |
| } |
| |
| public HandlerRegistration addValueHandlerWildCard(ValueChangeHandler<?> handler) { |
| return addHander(HANDLER_WILDCARD); |
| } |
| |
| public HandlerRegistration addSelectionHandlerT(SelectionHandler<T> handler) { |
| return addHander(SELECT_HANDLER_T); |
| } |
| |
| private HandlerRegistration addHander(HandlerType name) { |
| handlers.put(name, getHandlerCount(name) + 1); |
| return null; |
| } |
| |
| public int getHandlerCount(HandlerType name) { |
| Integer count = handlers.get(name); |
| return count == null ? 0 : count; |
| } |
| } |