GadgetInfoWidget.java

/**
 * 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.wavepanel.impl.toolbar.gadget;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.ImageElement;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.MouseOutEvent;
import com.google.gwt.event.dom.client.MouseOutHandler;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Composite;

import org.waveprotocol.wave.client.wavepanel.impl.toolbar.gadget.GadgetInfoProvider.GadgetCategoryType;
import org.waveprotocol.wave.client.widget.common.ImplPanel;

/**
 * A widget for displaying summary info about a gadget.
 *
 * @author danilatos@google.com (Daniel Danilatos)
 */
class GadgetInfoWidget extends Composite {
  interface Listener {
    void onSelect();
    void onMouseOver(GadgetInfoWidget widget);
    void onMouseOut(GadgetInfoWidget widget);
  }

  interface Binder extends UiBinder<ImplPanel, GadgetInfoWidget> {
  }

  private static final Binder BINDER = GWT.create(Binder.class);

  @UiField ImplPanel self;
  @UiField ImageElement image;
  @UiField Element title;
  @UiField Element description;
  @UiField Element author;
  private Listener listener;

  private String gadgetUrl;
  private GadgetCategoryType category1;
  private GadgetCategoryType category2;

  public GadgetInfoWidget() {
    initWidget(self = BINDER.createAndBindUi(this));

    self.addDomHandler(new MouseOverHandler() {
      @Override
      public void onMouseOver(MouseOverEvent event) {
        if (listener != null) {
          listener.onMouseOver(GadgetInfoWidget.this);
        }
      }
    }, MouseOverEvent.getType());

    self.addDomHandler(new MouseOutHandler() {
      @Override
      public void onMouseOut(MouseOutEvent event) {
        if (listener != null) {
          listener.onMouseOut(GadgetInfoWidget.this);
        }
      }
    }, MouseOutEvent.getType());
  }

  public void setImage(String url) {
    image.setSrc(url);
  }

  /**
   * Sets the visible title.
   *
   * Semantics differ from UiObject method.
   */
  @Override
  public void setTitle(String text) {
    title.setInnerText(text);
  }

  public void setDescription(String text) {
    description.setInnerText(text);
  }

  public void setAuthor(String name) {
    if (name == null || name.isEmpty()) {
      author.setInnerText("");
    } else {
      author.setInnerText("By " + name);
    }
  }

  public void setListener(Listener listener) {
    this.listener = listener;
  }

  @UiHandler("self")
  void onClick(ClickEvent e) {
    if (listener != null) {
      listener.onSelect();
    }
  }

  public void mark() {
    self.getElement().getStyle().setBackgroundColor("#ddd");
  }

  public void unMark() {
    self.getElement().getStyle().setBackgroundColor("#fff");
  }

  public void setGadgetUrl(String gadgetUrl) {
    this.gadgetUrl = gadgetUrl;
  }

  public String getGadgetUrl() {
    return gadgetUrl;
  }

  public GadgetCategoryType getCategory1() {
    return category1;
  }

  public void setCategory1(GadgetCategoryType category1) {
    this.category1 = category1;
  }

  public GadgetCategoryType getCategory2() {
    return category2;
  }

  public void setCategory2(GadgetCategoryType category2) {
    this.category2 = category2;
  }
}