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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.mail.widget;
     18 
     19 import com.android.mail.R;
     20 import com.android.mail.providers.Conversation;
     21 import com.android.mail.providers.Folder;
     22 import com.android.mail.ui.FolderDisplayer;
     23 import com.android.mail.utils.FolderUri;
     24 
     25 import android.content.Context;
     26 import android.content.res.Resources;
     27 import android.graphics.Bitmap;
     28 import android.graphics.BitmapFactory;
     29 import android.graphics.Typeface;
     30 import android.text.Spannable;
     31 import android.text.SpannableStringBuilder;
     32 import android.text.style.AbsoluteSizeSpan;
     33 import android.text.style.ForegroundColorSpan;
     34 import android.text.style.StyleSpan;
     35 import android.view.View;
     36 import android.widget.RemoteViews;
     37 
     38 public class WidgetConversationListItemViewBuilder {
     39     // Static font sizes
     40     private static int DATE_FONT_SIZE;
     41     private static int SUBJECT_FONT_SIZE;
     42 
     43     // Static colors
     44     private static int SUBJECT_TEXT_COLOR_READ;
     45     private static int SUBJECT_TEXT_COLOR_UNREAD;
     46     private static int DATE_TEXT_COLOR;
     47 
     48     // Static bitmap
     49     private static Bitmap ATTACHMENT;
     50 
     51     private final Context mContext;
     52     private WidgetFolderDisplayer mFolderDisplayer;
     53 
     54     /**
     55      * Label Displayer for Widget
     56      */
     57     protected static class WidgetFolderDisplayer extends FolderDisplayer {
     58         public WidgetFolderDisplayer(Context context) {
     59             super(context);
     60         }
     61 
     62         // Maximum number of folders we want to display
     63         private static final int MAX_DISPLAYED_FOLDERS_COUNT = 3;
     64 
     65         /*
     66          * Load Conversation Labels
     67          */
     68         @Override
     69         public void loadConversationFolders(Conversation conv, final FolderUri ignoreFolderUri,
     70                 final int ignoreFolderType) {
     71             super.loadConversationFolders(conv, ignoreFolderUri, ignoreFolderType);
     72         }
     73 
     74         private static int getFolderViewId(int position) {
     75             switch (position) {
     76                 case 0:
     77                     return R.id.widget_folder_0;
     78                 case 1:
     79                     return R.id.widget_folder_1;
     80                 case 2:
     81                     return R.id.widget_folder_2;
     82             }
     83             return 0;
     84         }
     85 
     86         /**
     87          * Display folders
     88          */
     89         public void displayFolders(RemoteViews remoteViews) {
     90             int displayedFolder = 0;
     91             for (Folder folderValues : mFoldersSortedSet) {
     92                 int viewId = getFolderViewId(displayedFolder);
     93                 if (viewId == 0) {
     94                     continue;
     95                 }
     96                 remoteViews.setViewVisibility(viewId, View.VISIBLE);
     97                 int color[] = new int[] {folderValues.getBackgroundColor(mDefaultBgColor)};
     98                 Bitmap bitmap = Bitmap.createBitmap(color, 1, 1, Bitmap.Config.RGB_565);
     99                 remoteViews.setImageViewBitmap(viewId, bitmap);
    100 
    101                 if (++displayedFolder == MAX_DISPLAYED_FOLDERS_COUNT) {
    102                     break;
    103                 }
    104             }
    105 
    106             for (int i = displayedFolder; i < MAX_DISPLAYED_FOLDERS_COUNT; i++) {
    107                 remoteViews.setViewVisibility(getFolderViewId(i), View.GONE);
    108             }
    109         }
    110     }
    111 
    112     /*
    113      * Get font sizes and bitmaps from Resources
    114      */
    115     public WidgetConversationListItemViewBuilder(Context context) {
    116         mContext = context;
    117         Resources res = context.getResources();
    118 
    119         // Initialize font sizes
    120         DATE_FONT_SIZE = res.getDimensionPixelSize(R.dimen.widget_date_font_size);
    121         SUBJECT_FONT_SIZE = res.getDimensionPixelSize(R.dimen.widget_subject_font_size);
    122 
    123         // Initialize colors
    124         SUBJECT_TEXT_COLOR_READ = res.getColor(R.color.subject_text_color_read);
    125         SUBJECT_TEXT_COLOR_UNREAD = res.getColor(R.color.subject_text_color_unread);
    126         DATE_TEXT_COLOR = res.getColor(R.color.date_text_color);
    127 
    128         // Initialize Bitmap
    129         ATTACHMENT = BitmapFactory.decodeResource(res, R.drawable.ic_attachment_holo_light);
    130     }
    131 
    132     /*
    133      * Add size, color and style to a given text
    134      */
    135     private static CharSequence addStyle(CharSequence text, int size, int color) {
    136         SpannableStringBuilder builder = new SpannableStringBuilder(text);
    137         builder.setSpan(
    138                 new AbsoluteSizeSpan(size), 0, text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    139         if (color != 0) {
    140             builder.setSpan(new ForegroundColorSpan(color), 0, text.length(),
    141                     Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    142         }
    143         return builder;
    144     }
    145 
    146     /*
    147      * Return the full View
    148      */
    149     public RemoteViews getStyledView(final CharSequence date, final Conversation conversation,
    150             final FolderUri folderUri, final int ignoreFolderType,
    151             final SpannableStringBuilder senders, final String filteredSubject) {
    152 
    153         final boolean isUnread = !conversation.read;
    154         final String snippet = conversation.getSnippet();
    155         final boolean hasAttachments = conversation.hasAttachments;
    156 
    157         // Add style to date
    158         final CharSequence styledDate = addStyle(date, DATE_FONT_SIZE, DATE_TEXT_COLOR);
    159 
    160         // Add style to subject
    161         final int subjectColor = isUnread ? SUBJECT_TEXT_COLOR_UNREAD : SUBJECT_TEXT_COLOR_READ;
    162         final SpannableStringBuilder subjectAndSnippet = new SpannableStringBuilder(
    163                 Conversation.getSubjectAndSnippetForDisplay(mContext, filteredSubject, snippet));
    164         if (isUnread) {
    165             subjectAndSnippet.setSpan(new StyleSpan(Typeface.BOLD), 0, filteredSubject.length(),
    166                     Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    167         }
    168         subjectAndSnippet.setSpan(new ForegroundColorSpan(subjectColor), 0, subjectAndSnippet
    169                 .length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    170         final CharSequence styledSubject = addStyle(subjectAndSnippet, SUBJECT_FONT_SIZE, 0);
    171 
    172         // Paper clip for attachment
    173         Bitmap paperclipBitmap = null;
    174         if (hasAttachments) {
    175             paperclipBitmap = ATTACHMENT;
    176         }
    177 
    178         // Inflate and fill out the remote view
    179         final RemoteViews remoteViews = new RemoteViews(
    180                 mContext.getPackageName(), R.layout.widget_conversation_list_item);
    181         remoteViews.setTextViewText(R.id.widget_senders, senders);
    182         remoteViews.setTextViewText(R.id.widget_date, styledDate);
    183         remoteViews.setTextViewText(R.id.widget_subject, styledSubject);
    184         if (paperclipBitmap != null) {
    185             remoteViews.setViewVisibility(R.id.widget_attachment, View.VISIBLE);
    186             remoteViews.setImageViewBitmap(R.id.widget_attachment, paperclipBitmap);
    187         } else {
    188             remoteViews.setViewVisibility(R.id.widget_attachment, View.GONE);
    189         }
    190         if (isUnread) {
    191             remoteViews.setViewVisibility(R.id.widget_unread_background, View.VISIBLE);
    192             remoteViews.setViewVisibility(R.id.widget_read_background, View.GONE);
    193         } else {
    194             remoteViews.setViewVisibility(R.id.widget_unread_background, View.GONE);
    195             remoteViews.setViewVisibility(R.id.widget_read_background, View.VISIBLE);
    196         }
    197         if (mContext.getResources().getBoolean(R.bool.display_folder_colors_in_widget)) {
    198             mFolderDisplayer = new WidgetFolderDisplayer(mContext);
    199             mFolderDisplayer.loadConversationFolders(conversation, folderUri, ignoreFolderType);
    200             mFolderDisplayer.displayFolders(remoteViews);
    201         }
    202 
    203         return remoteViews;
    204     }
    205 }
    206