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      1 /*
      2  * Copyright (C) 2008 Esmertec AG.
      3  * Copyright (C) 2008 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 package com.android.mms.ui;
     19 
     20 import android.content.Context;
     21 import android.graphics.Bitmap;
     22 import android.graphics.BitmapFactory;
     23 import android.util.Log;
     24 
     25 import com.android.mms.R;
     26 import com.android.mms.model.AudioModel;
     27 import com.android.mms.model.ImageModel;
     28 import com.android.mms.model.Model;
     29 import com.android.mms.model.SlideModel;
     30 import com.android.mms.model.SlideshowModel;
     31 import com.android.mms.model.VideoModel;
     32 import com.android.mms.util.ItemLoadedCallback;
     33 import com.android.mms.util.ItemLoadedFuture;
     34 import com.android.mms.util.ThumbnailManager.ImageLoaded;
     35 
     36 public class MmsThumbnailPresenter extends Presenter {
     37     private static final String TAG = "MmsThumbnailPresenter";
     38     private ItemLoadedCallback mOnLoadedCallback;
     39 
     40     public MmsThumbnailPresenter(Context context, ViewInterface view, Model model) {
     41         super(context, view, model);
     42     }
     43 
     44     @Override
     45     public void present(ItemLoadedCallback callback) {
     46         mOnLoadedCallback = callback;
     47         SlideModel slide = ((SlideshowModel) mModel).get(0);
     48         if (slide != null) {
     49             presentFirstSlide((SlideViewInterface) mView, slide);
     50         }
     51     }
     52 
     53     private void presentFirstSlide(SlideViewInterface view, SlideModel slide) {
     54         view.reset();
     55 
     56         if (slide.hasImage()) {
     57             presentImageThumbnail(view, slide.getImage());
     58         } else if (slide.hasVideo()) {
     59             presentVideoThumbnail(view, slide.getVideo());
     60         } else if (slide.hasAudio()) {
     61             presentAudioThumbnail(view, slide.getAudio());
     62         }
     63     }
     64 
     65     private ItemLoadedCallback<ImageLoaded> mImageLoadedCallback =
     66             new ItemLoadedCallback<ImageLoaded>() {
     67         public void onItemLoaded(ImageLoaded imageLoaded, Throwable exception) {
     68             if (exception == null) {
     69                 if (mOnLoadedCallback != null) {
     70                     mOnLoadedCallback.onItemLoaded(imageLoaded, exception);
     71                 } else {
     72                     // Right now we're only handling image and video loaded callbacks.
     73                     SlideModel slide = ((SlideshowModel) mModel).get(0);
     74                     if (slide != null) {
     75                         if (slide.hasVideo() && imageLoaded.mIsVideo) {
     76                             ((SlideViewInterface)mView).setVideoThumbnail(null,
     77                                     imageLoaded.mBitmap);
     78                         } else if (slide.hasImage() && !imageLoaded.mIsVideo) {
     79                             ((SlideViewInterface)mView).setImage(null, imageLoaded.mBitmap);
     80                         }
     81                     }
     82                 }
     83             }
     84         }
     85     };
     86 
     87     private void presentVideoThumbnail(SlideViewInterface view, VideoModel video) {
     88         video.loadThumbnailBitmap(mImageLoadedCallback);
     89     }
     90 
     91     private void presentImageThumbnail(SlideViewInterface view, ImageModel image) {
     92         image.loadThumbnailBitmap(mImageLoadedCallback);
     93     }
     94 
     95     protected void presentAudioThumbnail(SlideViewInterface view, AudioModel audio) {
     96         view.setAudio(audio.getUri(), audio.getSrc(), audio.getExtras());
     97     }
     98 
     99     public void onModelChanged(Model model, boolean dataChanged) {
    100         // TODO Auto-generated method stub
    101     }
    102 
    103     public void cancelBackgroundLoading() {
    104         // Currently we only support background loading of thumbnails. If we extend background
    105         // loading to other media types, we should add a cancelLoading API to Model.
    106         SlideModel slide = ((SlideshowModel) mModel).get(0);
    107         if (slide != null && slide.hasImage()) {
    108             slide.getImage().cancelThumbnailLoading();
    109         }
    110     }
    111 
    112 }
    113