Conversation.java revision 374863eeb0ee37f1ca7d57840e6f02aaa052e284
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.content.ContentProviderClient; 20import android.content.ContentValues; 21import android.content.Context; 22import android.database.Cursor; 23import android.net.Uri; 24import android.os.Parcel; 25import android.os.Parcelable; 26 27import com.android.mail.browse.ConversationCursor.ConversationOperation; 28import com.android.mail.browse.ConversationCursor.ConversationProvider; 29 30import java.util.ArrayList; 31import java.util.Collection; 32 33public class Conversation implements Parcelable { 34 35 public long id; 36 public String subject; 37 public long dateMs; 38 public String snippet; 39 public boolean hasAttachments; 40 public Uri messageListUri; 41 public String senders; 42 public int numMessages; 43 public int numDrafts; 44 public int sendingState; 45 public int priority; 46 public boolean read; 47 public boolean starred; 48 49 @Override 50 public int describeContents() { 51 return 0; 52 } 53 54 @Override 55 public void writeToParcel(Parcel dest, int flags) { 56 dest.writeLong(id); 57 dest.writeString(subject); 58 dest.writeLong(dateMs); 59 dest.writeString(snippet); 60 dest.writeByte(hasAttachments ? (byte) 1 : 0); 61 dest.writeParcelable(messageListUri, flags); 62 dest.writeString(senders); 63 dest.writeInt(numMessages); 64 dest.writeInt(numDrafts); 65 dest.writeInt(sendingState); 66 dest.writeInt(priority); 67 dest.writeByte(read ? (byte) 1 : 0); 68 dest.writeByte(starred ? (byte) 1 : 0); 69 } 70 71 private Conversation(Parcel in) { 72 id = in.readLong(); 73 subject = in.readString(); 74 dateMs = in.readLong(); 75 snippet = in.readString(); 76 hasAttachments = (in.readByte() != 0); 77 messageListUri = in.readParcelable(null); 78 senders = in.readString(); 79 numMessages = in.readInt(); 80 numDrafts = in.readInt(); 81 sendingState = in.readInt(); 82 priority = in.readInt(); 83 read = (in.readByte() != 0); 84 starred = (in.readByte() != 0); 85 } 86 87 @Override 88 public String toString() { 89 return "[conversation id=" + id + "]"; 90 } 91 92 public static final Creator<Conversation> CREATOR = new Creator<Conversation>() { 93 94 @Override 95 public Conversation createFromParcel(Parcel source) { 96 return new Conversation(source); 97 } 98 99 @Override 100 public Conversation[] newArray(int size) { 101 return new Conversation[size]; 102 } 103 104 }; 105 106 public static Conversation from(Cursor cursor) { 107 return new Conversation(cursor); 108 } 109 110 private Conversation(Cursor cursor) { 111 if (cursor != null) { 112 id = cursor.getLong(UIProvider.CONVERSATION_ID_COLUMN); 113 dateMs = cursor.getLong(UIProvider.CONVERSATION_DATE_RECEIVED_MS_COLUMN); 114 subject = cursor.getString(UIProvider.CONVERSATION_SUBJECT_COLUMN); 115 // Don't allow null subject 116 if (subject == null) { 117 subject = ""; 118 } 119 snippet = cursor.getString(UIProvider.CONVERSATION_SNIPPET_COLUMN); 120 hasAttachments = cursor.getInt(UIProvider.CONVERSATION_HAS_ATTACHMENTS_COLUMN) == 1; 121 messageListUri = Uri.parse(cursor 122 .getString(UIProvider.CONVERSATION_MESSAGE_LIST_URI_COLUMN)); 123 senders = cursor.getString(UIProvider.CONVERSATION_SENDER_INFO_COLUMN); 124 numMessages = cursor.getInt(UIProvider.CONVERSATION_NUM_MESSAGES_COLUMN); 125 numDrafts = cursor.getInt(UIProvider.CONVERSATION_NUM_DRAFTS_COLUMN); 126 sendingState = cursor.getInt(UIProvider.CONVERSATION_SENDING_STATE_COLUMN); 127 priority = cursor.getInt(UIProvider.CONVERSATION_PRIORITY_COLUMN); 128 read = cursor.getInt(UIProvider.CONVERSATION_READ_COLUMN) == 1; 129 starred = cursor.getInt(UIProvider.CONVERSATION_STARRED_COLUMN) == 1; 130 } 131 } 132 133 // Below are methods that update Conversation data (update/delete) 134 135 /** 136 * Update a boolean column for a single conversation 137 * @param context the caller's context 138 * @param columnName the column to update 139 * @param value the new value 140 */ 141 public void updateBoolean(Context context, String columnName, boolean value) { 142 ContentValues cv = new ContentValues(); 143 cv.put(columnName, value); 144 context.getContentResolver().update(messageListUri, cv, null, null); 145 } 146 147 /** 148 * Update a boolean column for a group of conversations, immediately in the UI and in a single 149 * transaction in the underlying provider 150 * @param conversations a collection of conversations 151 * @param context the caller's context 152 * @param columnName the column to update 153 * @param value the new value 154 */ 155 public static void updateBoolean(Context context, Collection<Conversation> conversations, 156 String columnName, boolean value) { 157 ContentValues cv = new ContentValues(); 158 cv.put(columnName, value); 159 ArrayList<ConversationOperation> ops = new ArrayList<ConversationOperation>(); 160 for (Conversation conv: conversations) { 161 ConversationOperation op = 162 new ConversationOperation(ConversationOperation.UPDATE, conv.messageListUri, 163 cv); 164 ops.add(op); 165 } 166 apply(context, ops); 167 } 168 169 /** 170 * Delete a single conversation 171 * @param context the caller's context 172 */ 173 public void delete(Context context) { 174 context.getContentResolver().delete(messageListUri, null, null); 175 } 176 177 /** 178 * Delete a group of conversations immediately in the UI and in a single transaction in the 179 * underlying provider 180 * @param context the caller's context 181 * @param conversations a collection of conversations 182 */ 183 public static void delete(Context context, Collection<Conversation> conversations) { 184 ArrayList<ConversationOperation> ops = new ArrayList<ConversationOperation>(); 185 for (Conversation conv: conversations) { 186 ConversationOperation op = 187 new ConversationOperation(ConversationOperation.DELETE, conv.messageListUri); 188 ops.add(op); 189 } 190 apply(context, ops); 191 } 192 193 // Convenience methods 194 private static void apply(Context context, ArrayList<ConversationOperation> operations) { 195 ContentProviderClient client = 196 context.getContentResolver().acquireContentProviderClient( 197 ConversationProvider.AUTHORITY); 198 try { 199 ConversationProvider cp = (ConversationProvider)client.getLocalContentProvider(); 200 cp.apply(operations); 201 } finally { 202 client.release(); 203 } 204 } 205} 206