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      1 /*
      2  * Copyright (C) 2012 Google Inc.
      3  * Licensed to 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.mail.ui;
     19 
     20 import com.android.mail.utils.FolderUri;
     21 import com.android.mail.utils.LogTag;
     22 import com.google.common.collect.Sets;
     23 
     24 import android.content.Context;
     25 
     26 import com.android.mail.R;
     27 import com.android.mail.providers.Conversation;
     28 import com.android.mail.providers.Folder;
     29 import com.android.mail.providers.UIProvider.FolderType;
     30 
     31 import java.util.SortedSet;
     32 
     33 /**
     34  * Used to generate folder display information given a raw folders string.
     35  * (The raw folders string can be obtained from {@link Conversation#getRawFolders()}.)
     36  *
     37  */
     38 public class FolderDisplayer {
     39     public static final String LOG_TAG = LogTag.getLogTag();
     40     protected Context mContext;
     41     protected final SortedSet<Folder> mFoldersSortedSet = Sets.newTreeSet();
     42 
     43     protected final int mDefaultBgColor;
     44     protected final int mDefaultFgColor;
     45 
     46     public FolderDisplayer(Context context) {
     47         mContext = context;
     48 
     49         mDefaultFgColor = context.getResources().getColor(R.color.default_folder_foreground_color);
     50         mDefaultBgColor = context.getResources().getColor(R.color.default_folder_background_color);
     51     }
     52 
     53     /**
     54      * Configure the FolderDisplayer object by filtering and copying from the list of raw folders.
     55      *
     56      * @param conv {@link Conversation} containing the folders to display.
     57      * @param ignoreFolderUri (optional) folder to omit from the displayed set
     58      * @param ignoreFolderType -1, or the {@link FolderType} to omit from the displayed set
     59      */
     60     public void loadConversationFolders(Conversation conv, final FolderUri ignoreFolderUri,
     61             final int ignoreFolderType) {
     62         mFoldersSortedSet.clear();
     63         for (Folder folder : conv.getRawFolders()) {
     64             // Skip the ignoreFolderType
     65             if (ignoreFolderType >= 0 && folder.isType(ignoreFolderType)) {
     66                 continue;
     67             }
     68             // skip the ignoreFolder
     69             if (ignoreFolderUri != null && ignoreFolderUri.equals(folder.folderUri)) {
     70                 continue;
     71             }
     72             mFoldersSortedSet.add(folder);
     73         }
     74     }
     75 
     76     /**
     77      * Reset this FolderDisplayer so that it can be reused.
     78      */
     79     public void reset() {
     80         mFoldersSortedSet.clear();
     81     }
     82 }
     83