| Methods Summary |
|---|
| public synchronized void | addOnDraftChangedListener(com.android.mms.util.DraftCache$OnDraftChangedListener l)
mChangeListeners.add(l);
|
| public static com.android.mms.util.DraftCache | getInstance()Get the global instance.
return sInstance;
|
| public synchronized boolean | hasDraft(long threadId)Returns true if the given thread ID has a draft associated
with it, false if not.
return mDraftSet.contains(threadId);
|
| public static void | init(android.content.Context context)Initialize the global instance. Should call only once.
sInstance = new DraftCache(context);
|
| private void | log(java.lang.String format, java.lang.Object args)
String s = String.format(format, args);
Log.d(TAG, "[" + Thread.currentThread().getId() + "] " + s);
|
| private synchronized void | rebuildCache()Does the actual work of rebuilding the draft cache.
HashSet<Long> oldDraftSet = mDraftSet;
HashSet<Long> newDraftSet = new HashSet<Long>(oldDraftSet.size());
Cursor cursor = SqliteWrapper.query(
mContext,
mContext.getContentResolver(),
MmsSms.CONTENT_DRAFT_URI,
DRAFT_PROJECTION, null, null, null);
try {
if (cursor.moveToFirst()) {
for (; !cursor.isAfterLast(); cursor.moveToNext()) {
long threadId = cursor.getLong(COLUMN_DRAFT_THREAD_ID);
newDraftSet.add(threadId);
}
}
} finally {
cursor.close();
}
mDraftSet = newDraftSet;
// If nobody's interested in finding out about changes,
// just bail out early.
if (mChangeListeners.size() < 1) {
return;
}
// Find out which drafts were removed and added and notify
// listeners.
Set<Long> added = new HashSet<Long>(newDraftSet);
added.removeAll(oldDraftSet);
Set<Long> removed = new HashSet<Long>(oldDraftSet);
removed.removeAll(newDraftSet);
for (OnDraftChangedListener l : mChangeListeners) {
for (long threadId : added) {
l.onDraftChanged(threadId, true);
}
for (long threadId : removed) {
l.onDraftChanged(threadId, false);
}
}
|
| public void | refresh()To be called whenever the draft state might have changed.
Dispatches work to a thread and returns immediately.
new Thread(new Runnable() {
public void run() {
rebuildCache();
}
}).start();
|
| public synchronized void | removeOnDraftChangedListener(com.android.mms.util.DraftCache$OnDraftChangedListener l)
mChangeListeners.remove(l);
|
| public synchronized void | setDraftState(long threadId, boolean hasDraft)Updates the has-draft status of a particular thread on
a piecemeal basis, to be called when a draft has appeared
or disappeared.
if (threadId <= 0) {
return;
}
boolean changed;
if (hasDraft) {
changed = mDraftSet.add(threadId);
} else {
changed = mDraftSet.remove(threadId);
}
// Notify listeners if there was a change.
if (changed) {
for (OnDraftChangedListener l : mChangeListeners) {
l.onDraftChanged(threadId, hasDraft);
}
}
|
