public void waitForUiThread(Handler icHandler) {
if (DEBUG) {
ThreadUtils.assertOnThread(icHandler.getLooper().getThread(), AssertBehavior.THROW);
Log.d(
LOGTAG,
"waitForUiThread() blocking on thread " + icHandler.getLooper().getThread().getName());
}
try {
Runnable runnable = null;
do {
runnable = mIcRunnableSync.take();
runnable.run();
} while (runnable != mIcSignalRunnable);
} catch (InterruptedException e) {
}
}
public Editable getEditableForUiThread(
final Handler uiHandler, final GoannaEditableClient client) {
if (DEBUG) {
ThreadUtils.assertOnThread(uiHandler.getLooper().getThread(), AssertBehavior.THROW);
}
final Handler icHandler = client.getInputConnectionHandler();
if (icHandler.getLooper() == uiHandler.getLooper()) {
// IC thread is UI thread; safe to use Editable directly
return client.getEditable();
}
// IC thread is not UI thread; we need to return a proxy Editable in order
// to safely use the Editable from the UI thread
if (mUiEditable != null) {
return mUiEditable;
}
final InvocationHandler invokeEditable =
new InvocationHandler() {
@Override
public Object invoke(final Object proxy, final Method method, final Object[] args)
throws Throwable {
if (DEBUG) {
ThreadUtils.assertOnThread(uiHandler.getLooper().getThread(), AssertBehavior.THROW);
Log.d(LOGTAG, "UiEditable." + method.getName() + "() blocking");
}
synchronized (icHandler) {
// Now we are on UI thread
mUiEditableReturn = null;
mUiEditableException = null;
// Post a Runnable that calls the real Editable and saves any
// result/exception. Then wait on the Runnable to finish
runOnIcThread(
icHandler,
new Runnable() {
@Override
public void run() {
synchronized (icHandler) {
try {
mUiEditableReturn = method.invoke(client.getEditable(), args);
} catch (Exception e) {
mUiEditableException = e;
}
if (DEBUG) {
Log.d(LOGTAG, "UiEditable." + method.getName() + "() returning");
}
icHandler.notify();
}
}
});
// let InterruptedException propagate
icHandler.wait();
if (mUiEditableException != null) {
throw mUiEditableException;
}
return mUiEditableReturn;
}
}
};
mUiEditable =
(Editable)
Proxy.newProxyInstance(
Editable.class.getClassLoader(), new Class<?>[] {Editable.class}, invokeEditable);
return mUiEditable;
}