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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 com.google.android.mms.ContentType;
     21 import com.google.android.mms.MmsException;
     22 import com.android.mms.model.AudioModel;
     23 import com.android.mms.model.ImageModel;
     24 import com.android.mms.model.RegionModel;
     25 import com.android.mms.model.SlideModel;
     26 import com.android.mms.model.SlideshowModel;
     27 import com.android.mms.model.TextModel;
     28 import com.android.mms.model.VideoModel;
     29 
     30 import android.content.Context;
     31 import android.net.Uri;
     32 import android.util.Log;
     33 
     34 /**
     35  * An utility to edit contents of a slide.
     36  */
     37 public class SlideshowEditor {
     38     private static final String TAG = "Mms:slideshow";
     39 
     40     public static final int MAX_SLIDE_NUM = 10;
     41 
     42     private final Context mContext;
     43     private SlideshowModel mModel;
     44 
     45     public SlideshowEditor(Context context, SlideshowModel model) {
     46         mContext = context;
     47         mModel = model;
     48     }
     49 
     50     public void setSlideshow(SlideshowModel model) {
     51         mModel = model;
     52     }
     53 
     54     /**
     55      * Add a new slide to the end of message.
     56      *
     57      * @return true if success, false if reach the max slide number.
     58      */
     59     public boolean addNewSlide() {
     60         int position = mModel.size();
     61         return addNewSlide(position);
     62     }
     63 
     64     /**
     65      * Add a new slide at the specified position in the message.
     66      *
     67      * @return true if success, false if reach the max slide number.
     68      * @throws IndexOutOfBoundsException - if position is out of range
     69      *         (position < 0 || position > size()).
     70      */
     71     public boolean addNewSlide(int position) {
     72         int size = mModel.size();
     73         if (size < MAX_SLIDE_NUM) {
     74             SlideModel slide = new SlideModel(mModel);
     75 
     76             TextModel text = new TextModel(
     77                     mContext, ContentType.TEXT_PLAIN, "text_" + size + ".txt",
     78                     mModel.getLayout().getTextRegion());
     79             slide.add(text);
     80 
     81             mModel.add(position, slide);
     82             return true;
     83         } else {
     84             Log.w(TAG, "The limitation of the number of slides is reached.");
     85             return false;
     86         }
     87     }
     88     /**
     89      * Add an existing slide at the specified position in the message.
     90      *
     91      * @return true if success, false if reach the max slide number.
     92      * @throws IndexOutOfBoundsException - if position is out of range
     93      *         (position < 0 || position > size()).
     94      */
     95     public boolean addSlide(int position, SlideModel slide) {
     96         int size = mModel.size();
     97         if (size < MAX_SLIDE_NUM) {
     98             mModel.add(position, slide);
     99             return true;
    100         } else {
    101             Log.w(TAG, "The limitation of the number of slides is reached.");
    102             return false;
    103         }
    104     }
    105 
    106     /**
    107      * Remove one slide.
    108      *
    109      * @param position
    110      */
    111     public void removeSlide(int position) {
    112         mModel.remove(position);
    113     }
    114 
    115     /**
    116      * Remove all slides.
    117      */
    118     public void removeAllSlides() {
    119         while (mModel.size() > 0) {
    120             removeSlide(0);
    121         }
    122     }
    123 
    124     /**
    125      * Remove the text of the specified slide.
    126      *
    127      * @param position index of the slide
    128      * @return true if success, false if no text in the slide.
    129      */
    130     public boolean removeText(int position) {
    131         return mModel.get(position).removeText();
    132     }
    133 
    134     public boolean removeImage(int position) {
    135         return mModel.get(position).removeImage();
    136     }
    137 
    138     public boolean removeVideo(int position) {
    139         return mModel.get(position).removeVideo();
    140     }
    141 
    142     public boolean removeAudio(int position) {
    143         return mModel.get(position).removeAudio();
    144     }
    145 
    146     public void changeText(int position, String newText) {
    147         if (newText != null) {
    148             SlideModel slide = mModel.get(position);
    149             TextModel text = slide.getText();
    150             if (text == null) {
    151                 text = new TextModel(mContext,
    152                         ContentType.TEXT_PLAIN, "text_" + position + ".txt",
    153                         mModel.getLayout().getTextRegion());
    154                 text.setText(newText);
    155                 slide.add(text);
    156             } else if (!newText.equals(text.getText())) {
    157                 text.setText(newText);
    158             }
    159         }
    160     }
    161 
    162     public void changeImage(int position, Uri newImage) throws MmsException {
    163         mModel.get(position).add(new ImageModel(
    164                 mContext, newImage, mModel.getLayout().getImageRegion()));
    165     }
    166 
    167     public void changeAudio(int position, Uri newAudio) throws MmsException {
    168         AudioModel audio = new AudioModel(mContext, newAudio);
    169         SlideModel slide = mModel.get(position);
    170         slide.add(audio);
    171         slide.updateDuration(audio.getDuration());
    172     }
    173 
    174     public void changeVideo(int position, Uri newVideo) throws MmsException {
    175         VideoModel video = new VideoModel(mContext, newVideo,
    176                 mModel.getLayout().getImageRegion());
    177         SlideModel slide = mModel.get(position);
    178         slide.add(video);
    179         slide.updateDuration(video.getDuration());
    180     }
    181 
    182     public void moveSlideUp(int position) {
    183         mModel.add(position - 1, mModel.remove(position));
    184     }
    185 
    186     public void moveSlideDown(int position) {
    187         mModel.add(position + 1, mModel.remove(position));
    188     }
    189 
    190     public void changeDuration(int position, int dur) {
    191         if (dur >= 0) {
    192             mModel.get(position).setDuration(dur);
    193         }
    194     }
    195 
    196     public void changeLayout(int layout) {
    197         mModel.getLayout().changeTo(layout);
    198     }
    199 
    200     public RegionModel getImageRegion() {
    201         return mModel.getLayout().getImageRegion();
    202     }
    203 
    204     public RegionModel getTextRegion() {
    205         return mModel.getLayout().getTextRegion();
    206     }
    207 }
    208