com.google.livingstories.client.lsp.views.contentitems.ImagePopupView.java Source code

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Here is the source code for com.google.livingstories.client.lsp.views.contentitems.ImagePopupView.java

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/**
 * 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.livingstories.client.lsp.views.contentitems;

import com.google.gwt.core.client.GWT;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.livingstories.client.AssetContentItem;
import com.google.livingstories.client.lsp.BylineWidget;
import com.google.livingstories.client.lsp.LspMessageHolder;
import com.google.livingstories.client.lsp.event.EventBus;
import com.google.livingstories.client.lsp.event.PopupImageLoadedEvent;
import com.google.livingstories.client.lsp.views.Resources;
import com.google.livingstories.client.ui.OverlayLabel;
import com.google.livingstories.client.util.BoundedImage;

/**
 * Popup view for an image.  Fires a PopupImageLoadedEvent through the event bus so
 * popup panels can recenter themselves based on the size of the image.
 */
public class ImagePopupView extends Composite {
    private static ImagePopupViewUiBinder uiBinder = GWT.create(ImagePopupViewUiBinder.class);

    interface ImagePopupViewUiBinder extends UiBinder<Widget, ImagePopupView> {
    }

    private static String BROKEN_LINK_TEXT = LspMessageHolder.consts.imageUnavailable();
    private static final int WINDOW_PADDING = 200;

    @UiField
    SimplePanel image;
    @UiField
    OverlayLabel caption;
    @UiField
    SimplePanel byline;

    public ImagePopupView(final AssetContentItem contentItem) {
        initWidget(uiBinder.createAndBindUi(this));

        new BoundedImage(contentItem.getContent(), Window.getClientWidth() - WINDOW_PADDING,
                Window.getClientHeight() - WINDOW_PADDING) {
            @Override
            public void onImageLoad(boolean failed) {
                PopupImageLoadedEvent event;
                if (failed) {
                    Label brokenLink = new Label(BROKEN_LINK_TEXT);
                    brokenLink.setStylePrimaryName(Resources.INSTANCE.css().error());
                    image.setWidget(brokenLink);
                    image.setSize("250px", "150px");
                    event = new PopupImageLoadedEvent(250, 150);
                } else {
                    image.setWidget(this);
                    event = new PopupImageLoadedEvent(this.getDisplayWidth(), this.getDisplayHeight());
                }
                caption.setText(contentItem.getCaption());
                if (!contentItem.getContributorIds().isEmpty()) {
                    byline.setWidget(new BylineWidget(contentItem, false));
                }
                EventBus.INSTANCE.fireEvent(event);
            }
        };
    }
}