| /* |
| * Copyright 2010 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.cell.client; |
| |
| |
| import static com.google.gwt.dom.client.BrowserEvents.CLICK; |
| import static com.google.gwt.dom.client.BrowserEvents.KEYDOWN; |
| |
| import com.google.gwt.dom.client.Element; |
| import com.google.gwt.dom.client.EventTarget; |
| import com.google.gwt.dom.client.NativeEvent; |
| import com.google.gwt.safehtml.shared.SafeHtml; |
| import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
| import com.google.gwt.text.shared.SafeHtmlRenderer; |
| import com.google.gwt.text.shared.SimpleSafeHtmlRenderer; |
| |
| /** |
| * A {@link Cell} used to render a button. |
| */ |
| public class ButtonCell extends AbstractSafeHtmlCell<String> { |
| |
| /** |
| * Construct a new ButtonCell that will use a {@link SimpleSafeHtmlRenderer}. |
| */ |
| public ButtonCell() { |
| this(SimpleSafeHtmlRenderer.getInstance()); |
| } |
| |
| /** |
| * Construct a new ButtonCell that will use a given {@link SafeHtmlRenderer}. |
| * |
| * @param renderer a {@link SafeHtmlRenderer SafeHtmlRenderer<String>} instance |
| */ |
| public ButtonCell(SafeHtmlRenderer<String> renderer) { |
| super(renderer, CLICK, KEYDOWN); |
| } |
| |
| @Override |
| public void onBrowserEvent(Context context, Element parent, String value, |
| NativeEvent event, ValueUpdater<String> valueUpdater) { |
| super.onBrowserEvent(context, parent, value, event, valueUpdater); |
| if (CLICK.equals(event.getType())) { |
| EventTarget eventTarget = event.getEventTarget(); |
| if (!Element.is(eventTarget)) { |
| return; |
| } |
| if (parent.getFirstChildElement().isOrHasChild(Element.as(eventTarget))) { |
| // Ignore clicks that occur outside of the main element. |
| onEnterKeyDown(context, parent, value, event, valueUpdater); |
| } |
| } |
| } |
| |
| @Override |
| public void render(Context context, SafeHtml data, SafeHtmlBuilder sb) { |
| sb.appendHtmlConstant("<button type=\"button\" tabindex=\"-1\">"); |
| if (data != null) { |
| sb.append(data); |
| } |
| sb.appendHtmlConstant("</button>"); |
| } |
| |
| @Override |
| protected void onEnterKeyDown(Context context, Element parent, String value, |
| NativeEvent event, ValueUpdater<String> valueUpdater) { |
| if (valueUpdater != null) { |
| valueUpdater.update(value); |
| } |
| } |
| } |