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Handle loadMore when no messages are loaded 

Bug: 7129772
Change-Id: I9d2fd4f2bc488930c53e9fe44dc3fa852409b5c0
This commit is contained in:
Marc Blank 2012-09-11 08:56:56 -07:00
parent a88fb32724
commit 8580511541
1 changed files with 44 additions and 29 deletions
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73
src/com/android/email/imap2/Imap2SyncService.java
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@ -2032,9 +2032,19 @@ public class Imap2SyncService extends AbstractSyncService {
* @throws IOException
*/
private int[] handleLoadMore(int[] serverList, int howManyMore) throws IOException {
// User has asked for more; find the oldest message
// Easiest case; we have no messages.. just start at the last one in the mailbox
if (serverList.length == 0) {
if (mLastExists > 0) {
return loadMoreImpl(serverList, mLastExists, howManyMore);
}
return serverList;
}
// First, sort the list
Arrays.sort(serverList);
// Oldest is the first in the sorted list
int oldest = serverList[0];
// Get its current sequence number
String tag = writeCommand(mWriter, "uid fetch " + oldest + " (UID)");
// IMAP_OK if we want it to work
@ -2042,38 +2052,43 @@ public class Imap2SyncService extends AbstractSyncService {
String line = mImapResponse.get(0);
Parser lp = new Parser(line.substring(2));
// Last one we want is one before this message
int end = lp.parseInteger() - 1;
int start = end - howManyMore + 1;
if (start < 1) {
start = 1;
}
if (end > 0) {
// Get the uid's of the messages to load
tag = writeCommand(mWriter, "uid search " + start + ":" + end);
// IMAP_OK if we want it to work
if (readResponse(mReader, tag, "SEARCH").equals(IMAP_OK)) {
int[] moreServerList;
return loadMoreImpl(serverList, lp.parseInteger() - 1, howManyMore);
}
// In worst case, just return the original list
return serverList;
}
// Parse the list
if (mImapResponse.isEmpty()) {
// Just return the original list
return serverList;
} else {
String msgs = mImapResponse.get(0);
// Length of "* search"
Parser p = new Parser(msgs, 8);
moreServerList = p.gatherInts();
userLog("[Load more found " + moreServerList.length + " messages]");
int[] completeList = new int[serverList.length + moreServerList.length];
System.arraycopy(serverList, 0, completeList, 0, serverList.length);
System.arraycopy(moreServerList, 0, completeList, serverList.length,
moreServerList.length);
return completeList;
}
private int[] loadMoreImpl(int[] serverList, int end, int howManyMore) throws IOException {
int start = end - howManyMore + 1;
if (start < 1) {
start = 1;
}
if (end > 0) {
// Get the uid's of the messages to load
String tag = writeCommand(mWriter, "uid search " + start + ":" + end);
// IMAP_OK if we want it to work
if (readResponse(mReader, tag, "SEARCH").equals(IMAP_OK)) {
int[] moreServerList;
// Parse the list
if (mImapResponse.isEmpty()) {
// Just return the original list
return serverList;
} else {
String msgs = mImapResponse.get(0);
// Length of "* search"
Parser p = new Parser(msgs, 8);
moreServerList = p.gatherInts();
userLog("[Load more found " + moreServerList.length + " messages]");
int[] completeList = new int[serverList.length + moreServerList.length];
System.arraycopy(serverList, 0, completeList, 0, serverList.length);
System.arraycopy(moreServerList, 0, completeList, serverList.length,
moreServerList.length);
return completeList;
}
}
}
// In worst case, just return the original list
return serverList;
}