Wrangle module frames with I2C keyboard (#4817)

* Only suppress UI nav if module using keyboard input

* CardKB combo to dismiss text message and waypoint
Currently assigned to Fn + Delete

src/modules/CannedMessageModule.cpp

@@ -276,6 +276,13 @@ int CannedMessageModule::handleInputEvent(const InputEvent *event)
                 showTemporaryMessage("Node Info \nUpdate Sent");
             }
             break;
+        case INPUT_BROKER_MSG_DISMISS_FRAME: // fn+del: dismiss screen frames like text or waypoint
+            // Avoid opening the canned message screen frame
+            // We're only handling the keypress here by convention, this has nothing to do with canned messages
+            this->runState = CANNED_MESSAGE_RUN_STATE_INACTIVE;
+            // Attempt to close whatever frame is currently shown on display
+            screen->dismissCurrentFrame();
+            return 0;
         default:
             // pass the pressed key
             // LOG_DEBUG("Canned message ANYKEY (%x)\n", event->kbchar);
@@ -935,6 +942,19 @@ void CannedMessageModule::drawEnterIcon(OLEDDisplay *display, int x, int y, floa
 
 #endif
 
+// Indicate to screen class that module is handling keyboard input specially (at certain times)
+// This prevents the left & right keys being used for nav. between screen frames during text entry.
+bool CannedMessageModule::interceptingKeyboardInput()
+{
+    switch (runState) {
+    case CANNED_MESSAGE_RUN_STATE_DISABLED:
+    case CANNED_MESSAGE_RUN_STATE_INACTIVE:
+        return false;
+    default:
+        return true;
+    }
+}
+
 void CannedMessageModule::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
 {
     char buffer[50];