Conversation.java revision 3f1eb8517cf7db29ceafa1912ae999af186e2856
1/** 2 * Copyright (c) 2012, Google Inc. 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 17package com.android.mail.providers; 18 19import android.app.Activity; 20import android.content.ContentProviderClient; 21import android.content.ContentValues; 22import android.content.Context; 23import android.database.Cursor; 24import android.net.Uri; 25import android.os.Parcel; 26import android.os.Parcelable; 27import android.widget.Toast; 28 29import com.android.mail.browse.ConversationCursor.ConversationOperation; 30import com.android.mail.browse.ConversationCursor.ConversationProvider; 31 32import java.util.ArrayList; 33import java.util.Collection; 34 35public class Conversation implements Parcelable { 36 public static final int NO_POSITION = -1; 37 38 public long id; 39 public Uri uri; 40 public String subject; 41 public long dateMs; 42 public String snippet; 43 public boolean hasAttachments; 44 public Uri messageListUri; 45 public String senders; 46 public int numMessages; 47 public int numDrafts; 48 public int sendingState; 49 public int priority; 50 public boolean read; 51 public boolean starred; 52 public String folderList; 53 // Used within the UI to indicate the adapter position of this conversation 54 public transient int position; 55 // Used within the UI to indicate that a Conversation should be removed from the 56 // ConversationCursor when executing an update, e.g. the the Conversation is no longer 57 // in the ConversationList for the current folder, that is it's now in some other folder(s) 58 public transient boolean localDeleteOnUpdate; 59 60 @Override 61 public int describeContents() { 62 return 0; 63 } 64 65 @Override 66 public void writeToParcel(Parcel dest, int flags) { 67 dest.writeLong(id); 68 dest.writeParcelable(uri, flags); 69 dest.writeString(subject); 70 dest.writeLong(dateMs); 71 dest.writeString(snippet); 72 dest.writeByte(hasAttachments ? (byte) 1 : 0); 73 dest.writeParcelable(messageListUri, flags); 74 dest.writeString(senders); 75 dest.writeInt(numMessages); 76 dest.writeInt(numDrafts); 77 dest.writeInt(sendingState); 78 dest.writeInt(priority); 79 dest.writeByte(read ? (byte) 1 : 0); 80 dest.writeByte(starred ? (byte) 1 : 0); 81 dest.writeString(folderList); 82 } 83 84 private Conversation(Parcel in) { 85 id = in.readLong(); 86 uri = in.readParcelable(null); 87 subject = in.readString(); 88 dateMs = in.readLong(); 89 snippet = in.readString(); 90 hasAttachments = (in.readByte() != 0); 91 messageListUri = in.readParcelable(null); 92 senders = in.readString(); 93 numMessages = in.readInt(); 94 numDrafts = in.readInt(); 95 sendingState = in.readInt(); 96 priority = in.readInt(); 97 read = (in.readByte() != 0); 98 starred = (in.readByte() != 0); 99 folderList = in.readString(); 100 position = NO_POSITION; 101 localDeleteOnUpdate = false; 102 } 103 104 @Override 105 public String toString() { 106 return "[conversation id=" + id + "]"; 107 } 108 109 public static final Creator<Conversation> CREATOR = new Creator<Conversation>() { 110 111 @Override 112 public Conversation createFromParcel(Parcel source) { 113 return new Conversation(source); 114 } 115 116 @Override 117 public Conversation[] newArray(int size) { 118 return new Conversation[size]; 119 } 120 121 }; 122 123 public static Conversation from(Cursor cursor) { 124 return new Conversation(cursor); 125 } 126 127 private Conversation(Cursor cursor) { 128 if (cursor != null) { 129 id = cursor.getLong(UIProvider.CONVERSATION_ID_COLUMN); 130 uri = Uri.parse(cursor.getString(UIProvider.CONVERSATION_URI_COLUMN)); 131 dateMs = cursor.getLong(UIProvider.CONVERSATION_DATE_RECEIVED_MS_COLUMN); 132 subject = cursor.getString(UIProvider.CONVERSATION_SUBJECT_COLUMN); 133 // Don't allow null subject 134 if (subject == null) { 135 subject = ""; 136 } 137 snippet = cursor.getString(UIProvider.CONVERSATION_SNIPPET_COLUMN); 138 hasAttachments = cursor.getInt(UIProvider.CONVERSATION_HAS_ATTACHMENTS_COLUMN) == 1; 139 messageListUri = Uri.parse(cursor 140 .getString(UIProvider.CONVERSATION_MESSAGE_LIST_URI_COLUMN)); 141 senders = cursor.getString(UIProvider.CONVERSATION_SENDER_INFO_COLUMN); 142 numMessages = cursor.getInt(UIProvider.CONVERSATION_NUM_MESSAGES_COLUMN); 143 numDrafts = cursor.getInt(UIProvider.CONVERSATION_NUM_DRAFTS_COLUMN); 144 sendingState = cursor.getInt(UIProvider.CONVERSATION_SENDING_STATE_COLUMN); 145 priority = cursor.getInt(UIProvider.CONVERSATION_PRIORITY_COLUMN); 146 read = cursor.getInt(UIProvider.CONVERSATION_READ_COLUMN) == 1; 147 starred = cursor.getInt(UIProvider.CONVERSATION_STARRED_COLUMN) == 1; 148 folderList = cursor.getString(UIProvider.CONVERSATION_FOLDER_LIST_COLUMN); 149 position = NO_POSITION; 150 localDeleteOnUpdate = false; 151 } 152 } 153 154 // Below are methods that update Conversation data (update/delete) 155 156 /** 157 * Update a boolean column for a single conversation (see updateBoolean below) 158 */ 159 public int updateBoolean(Context context, String columnName, boolean value) { 160 ArrayList<Conversation> conversations = new ArrayList<Conversation>(); 161 conversations.add(this); 162 return updateBoolean(context, conversations, columnName, value); 163 } 164 165 /** 166 * Update a string column for a group of conversations (see updateValues below) 167 */ 168 public static int updateBoolean(Context context, Collection<Conversation> conversations, 169 String columnName, boolean value) { 170 ContentValues cv = new ContentValues(); 171 cv.put(columnName, value); 172 return updateValues(context, conversations, cv); 173 } 174 175 /** 176 * Update a string column for a single conversation (see updateString below) 177 */ 178 public int updateString(Context context, String columnName, String value) { 179 ArrayList<Conversation> conversations = new ArrayList<Conversation>(); 180 conversations.add(this); 181 return updateString(context, conversations, columnName, value); 182 } 183 184 /** 185 * Update a string column for a group of conversations (see updateValues below) 186 */ 187 public static int updateString(Context context, Collection<Conversation> conversations, 188 String columnName, String value) { 189 ContentValues cv = new ContentValues(); 190 cv.put(columnName, value); 191 return updateValues(context, conversations, cv); 192 } 193 194 /** 195 * Update a boolean column for a group of conversations, immediately in the UI and in a single 196 * transaction in the underlying provider 197 * @param conversations a collection of conversations 198 * @param context the caller's context 199 * @param columnName the column to update 200 * @param value the new value 201 * @return the sequence number of the operation (for undo) 202 */ 203 private static int updateValues(Context context, Collection<Conversation> conversations, 204 ContentValues values) { 205 ArrayList<ConversationOperation> ops = new ArrayList<ConversationOperation>(); 206 for (Conversation conv: conversations) { 207 ConversationOperation op = 208 new ConversationOperation(ConversationOperation.UPDATE, conv, values); 209 ops.add(op); 210 } 211 return apply(context, ops); 212 } 213 214 /** 215 * Delete a single conversation 216 * @param context the caller's context 217 * @return the sequence number of the operation (for undo) 218 */ 219 public int delete(Context context) { 220 ArrayList<Conversation> conversations = new ArrayList<Conversation>(); 221 conversations.add(this); 222 return delete(context, conversations); 223 } 224 225 /** 226 * Delete a group of conversations immediately in the UI and in a single transaction in the 227 * underlying provider 228 * @param context the caller's context 229 * @param conversations a collection of conversations 230 * @return the sequence number of the operation (for undo) 231 */ 232 public static int delete(Context context, Collection<Conversation> conversations) { 233 ArrayList<ConversationOperation> ops = new ArrayList<ConversationOperation>(); 234 for (Conversation conv: conversations) { 235 ConversationOperation op = 236 new ConversationOperation(ConversationOperation.DELETE, conv); 237 ops.add(op); 238 } 239 return apply(context, ops); 240 } 241 242 // Convenience methods 243 private static int apply(Context context, ArrayList<ConversationOperation> operations) { 244 ContentProviderClient client = 245 context.getContentResolver().acquireContentProviderClient( 246 ConversationProvider.AUTHORITY); 247 try { 248 ConversationProvider cp = (ConversationProvider)client.getLocalContentProvider(); 249 return cp.apply(operations); 250 } finally { 251 client.release(); 252 } 253 } 254 255 public static void undo(final Activity activity, final String undoUri) { 256 new Thread(new Runnable() { 257 @Override 258 public void run() { 259 Cursor c = activity.getContentResolver().query(Uri.parse(undoUri), 260 UIProvider.UNDO_PROJECTION, null, null, null); 261 if (c != null) { 262 c.close(); 263 } 264 // TODO: Do something better... :-) 265 activity.runOnUiThread(new Runnable() { 266 @Override 267 public void run() { 268 Toast.makeText(activity, "Undone!", Toast.LENGTH_LONG).show(); 269 }}); 270 }}).start(); 271 } 272}