Tell system server whether the app handled input events.
Refactored ViewRoot, NativeActivity and related classes to tell the
dispatcher whether an input event was actually handled by the application.
This will be used to move more of the global default key processing
into the system server instead of the application.
Change-Id: If06b98b6f45c543e5ac5b1eae2b3baf9371fba28
diff --git a/libs/ui/InputTransport.cpp b/libs/ui/InputTransport.cpp
index 2c6346e..1885691 100644
--- a/libs/ui/InputTransport.cpp
+++ b/libs/ui/InputTransport.cpp
@@ -35,8 +35,12 @@
static const char INPUT_SIGNAL_DISPATCH = 'D';
// Signal sent by the consumer to the producer to inform it that it has finished
-// consuming the most recent message.
-static const char INPUT_SIGNAL_FINISHED = 'f';
+// consuming the most recent message and it handled it.
+static const char INPUT_SIGNAL_FINISHED_HANDLED = 'f';
+
+// Signal sent by the consumer to the producer to inform it that it has finished
+// consuming the most recent message but it did not handle it.
+static const char INPUT_SIGNAL_FINISHED_UNHANDLED = 'u';
// --- InputChannel ---
@@ -497,7 +501,7 @@
return mChannel->sendSignal(INPUT_SIGNAL_DISPATCH);
}
-status_t InputPublisher::receiveFinishedSignal() {
+status_t InputPublisher::receiveFinishedSignal(bool& outHandled) {
#if DEBUG_TRANSPORT_ACTIONS
LOGD("channel '%s' publisher ~ receiveFinishedSignal",
mChannel->getName().string());
@@ -506,9 +510,14 @@
char signal;
status_t result = mChannel->receiveSignal(& signal);
if (result) {
+ outHandled = false;
return result;
}
- if (signal != INPUT_SIGNAL_FINISHED) {
+ if (signal == INPUT_SIGNAL_FINISHED_HANDLED) {
+ outHandled = true;
+ } else if (signal == INPUT_SIGNAL_FINISHED_UNHANDLED) {
+ outHandled = false;
+ } else {
LOGE("channel '%s' publisher ~ Received unexpected signal '%c' from consumer",
mChannel->getName().string(), signal);
return UNKNOWN_ERROR;
@@ -626,13 +635,15 @@
return OK;
}
-status_t InputConsumer::sendFinishedSignal() {
+status_t InputConsumer::sendFinishedSignal(bool handled) {
#if DEBUG_TRANSPORT_ACTIONS
- LOGD("channel '%s' consumer ~ sendFinishedSignal",
- mChannel->getName().string());
+ LOGD("channel '%s' consumer ~ sendFinishedSignal: handled=%d",
+ mChannel->getName().string(), handled);
#endif
- return mChannel->sendSignal(INPUT_SIGNAL_FINISHED);
+ return mChannel->sendSignal(handled
+ ? INPUT_SIGNAL_FINISHED_HANDLED
+ : INPUT_SIGNAL_FINISHED_UNHANDLED);
}
status_t InputConsumer::receiveDispatchSignal() {