| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.waveprotocol.wave.client.doodad.form.button; |
| |
| import com.google.gwt.user.client.Event; |
| |
| import org.waveprotocol.box.webclient.client.Session; |
| import org.waveprotocol.wave.client.common.util.DomHelper; |
| import org.waveprotocol.wave.client.common.util.DomHelper.HandlerReference; |
| import org.waveprotocol.wave.client.common.util.DomHelper.JavaScriptEventListener; |
| import org.waveprotocol.wave.client.doodad.form.events.ContentEvents; |
| import org.waveprotocol.wave.client.editor.ElementHandlerRegistry; |
| import org.waveprotocol.wave.client.editor.NodeEventHandler; |
| import org.waveprotocol.wave.client.editor.NodeEventHandlerImpl; |
| import org.waveprotocol.wave.client.editor.content.ContentElement; |
| import org.waveprotocol.wave.client.editor.content.ContentNode; |
| import org.waveprotocol.wave.client.editor.content.NodeEventRouter; |
| import org.waveprotocol.wave.client.editor.content.misc.Caption; |
| import org.waveprotocol.wave.client.editor.event.EditorEvent; |
| import org.waveprotocol.wave.client.widget.button.ClickButton; |
| import org.waveprotocol.wave.model.document.util.Property; |
| import org.waveprotocol.wave.model.document.util.XmlStringBuilder; |
| |
| import java.util.HashMap; |
| |
| public final class Button { |
| private static final String TAGNAME = "button"; |
| |
| static final Property<ClickButton> BUTTON_LOGIC_PROP = Property.immutable("button_logic"); |
| private static final Property<HandlerReference> HANDLE = Property.mutable("handle"); |
| |
| |
| private static final ButtonRenderingMutationHandler RENDERING_MUTATION_HANDLER = |
| new ButtonRenderingMutationHandler(); |
| private static final NodeEventHandler NODE_EVENT_HANDLER = new NodeEventHandlerImpl() { |
| // TODO(patcoleman): Consider overriding handleBackspaceAfterNode so that buttons are harder to |
| // delete. |
| |
| @Override |
| public boolean handleClick(ContentElement element, EditorEvent event) { |
| ContentNode last = element.getLastChild(); |
| ContentNode events = (last != null && ContentEvents.isContentEvents(last)) ? |
| last : null; |
| |
| if (events != null && NodeEventRouter.INSTANCE.handleClick(events, event)) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public void onActivated(final ContentElement element) { |
| element.setProperty(HANDLE, DomHelper.registerEventHandler(element.getImplNodelet(), "click", |
| new JavaScriptEventListener() { |
| @Override |
| public void onJavaScriptEvent(String name, Event event) { |
| ContentNode ev = element.getFirstChild(); |
| while (ev.getNextSibling() != null && ev.asElement().getName() != "events") { |
| ev = ev.getNextSibling(); |
| } |
| HashMap<String, String> attr = new HashMap<String, String>(); |
| attr.put("time", Long.toString(System.currentTimeMillis())); |
| attr.put("clicker", Session.get().getAddress()); |
| ev.getMutableDoc().createChildElement(ev.asElement(), "click", attr); |
| } |
| |
| })); |
| } |
| |
| @Override |
| public void onDeactivated(ContentElement element) { |
| // Clean up |
| element.getProperty(HANDLE).unregister(); |
| } |
| }; |
| |
| |
| /** |
| * Registers subclass with ContentElement |
| */ |
| public static void register( |
| final ElementHandlerRegistry registry) { |
| registry.registerEventHandler(TAGNAME, NODE_EVENT_HANDLER); |
| registry.registerRenderingMutationHandler(TAGNAME, RENDERING_MUTATION_HANDLER); |
| } |
| |
| /** |
| * @param caption |
| * @param name |
| * @return A content xml string containing n button |
| */ |
| public static XmlStringBuilder constructXml( |
| XmlStringBuilder caption, String name) { |
| return Caption.constructXml(caption) |
| .append(ContentEvents.constructXml()) |
| .wrap(TAGNAME, ContentElement.NAME, name); |
| } |
| |
| /** Utility class */ |
| private Button() { |
| } |
| } |