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

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Here is the source code for com.google.livingstories.client.lsp.views.contentitems.LinkedViewFactory.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.user.client.ui.Widget;
import com.google.livingstories.client.AssetContentItem;
import com.google.livingstories.client.BaseContentItem;
import com.google.livingstories.client.NarrativeContentItem;
import com.google.livingstories.client.PlayerContentItem;
import com.google.livingstories.client.QuoteContentItem;
import com.google.livingstories.client.lsp.views.Resources;

import java.util.Set;

/**
 * Factory for generating widgets for the event block view based on contentItem type.
 */
public class LinkedViewFactory {
    public static Widget createView(BaseContentItem contentItem, Set<Long> containerContributorIds) {
        Widget widget = null;
        switch (contentItem.getContentItemType()) {
        case BACKGROUND:
        case DATA:
        case REACTION:
            widget = new ContentItemPreviewWithHeader(contentItem);
            break;
        case NARRATIVE:
            widget = new NarrativeContentItemView((NarrativeContentItem) contentItem, containerContributorIds);
            break;
        case QUOTE:
            widget = new QuoteContentItemView((QuoteContentItem) contentItem);
            break;
        case PLAYER:
            widget = new BasePlayerPreview((PlayerContentItem) contentItem);
            break;
        case ASSET:
            AssetContentItem asset = (AssetContentItem) contentItem;
            switch (asset.getAssetType()) {
            case LINK:
                widget = new LinkAssetPreview(asset);
                break;
            case DOCUMENT:
                widget = new DocumentAssetPreview(asset);
                break;
            case AUDIO:
                widget = new AudioAssetView(asset);
                break;
            case INTERACTIVE:
                widget = new GraphicAssetPreview(asset);
                break;
            case VIDEO:
                widget = new VideoAssetPreview(asset);
                break;
            case IMAGE:
                // getRelatedAssets() will return a list that includes the current asset.
                // So we only make a slideshow if there's more than 1 asset in the list.
                if (asset.getRelatedAssets() != null && asset.getRelatedAssets().size() > 1) {
                    widget = new SlideshowPreview(asset);
                } else {
                    widget = new ImageAssetPreview(asset);
                }
                break;
            default:
                throw new IllegalArgumentException(
                        "Asset type " + asset.getAssetType() + " does not have a linked view defined.");
            }
            break;
        default:
            throw new IllegalArgumentException("Content item type " + contentItem.getContentItemType()
                    + " does not have a linked view defined.");
        }
        widget.addStyleName(Resources.INSTANCE.css().linkedItemSpacing());
        return widget;
    }
}