Handle UI operations through gamepad

chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java

Index: chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java b/chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java
index 54d174547b2b6ea54d36926baf26f0c54990ee6c..b712209d50eae3e5523ca2f02be517b4a4dedbcc 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/KeyboardShortcuts.java
@@ -34,6 +34,13 @@ public class KeyboardShortcuts {
                 | (event.isShiftPressed() ? SHIFT : 0);
     }
 
+    private static boolean isGamepadAPIActive(ChromeActivity activity) {
+        if (activity.getCurrentContentViewCore() != null) {

[newt (away), 2015/08/10 18:52:07]

nit: store the reference to the ContentViewCore (since
activity.getCurrentContentViewCore() is not a trivial getter):

   ContentViewCore viewCore = activity.getCurrentContentViewCore();
   return viewCore == null ? false : viewCore.isGamepadAPIActive();

[sshelke, 2015/08/11 13:49:07]

Done.

+            return activity.getCurrentContentViewCore().isGamepadAPIActive();
+        }
+        return false;
+    }
+
     /**
      * This should be called from the Activity's dispatchKeyEvent() to handle keyboard shortcuts.
      *
@@ -105,7 +112,9 @@ public class KeyboardShortcuts {
             boolean isCurrentTabVisible, boolean tabSwitchingEnabled) {
         int keyCode = event.getKeyCode();
         if (event.getRepeatCount() != 0 || KeyEvent.isModifierKey(keyCode)) return false;
-        if (!event.isCtrlPressed() && !event.isAltPressed()
+        if (KeyEvent.isGamepadButton(keyCode)) {
+            if (isGamepadAPIActive(activity)) return false;
+        } else if (!event.isCtrlPressed() && !event.isAltPressed()
                 && keyCode != KeyEvent.KEYCODE_F3
                 && keyCode != KeyEvent.KEYCODE_F5
                 && keyCode != KeyEvent.KEYCODE_FORWARD) {
@@ -146,6 +155,7 @@ public class KeyboardShortcuts {
                 }
                 return true;
             case ALT | KeyEvent.KEYCODE_F:
+            case KeyEvent.KEYCODE_BUTTON_Y:
                 activity.onMenuOrKeyboardAction(R.id.show_menu, false);
                 return true;
         }
@@ -167,18 +177,21 @@ public class KeyboardShortcuts {
             switch (keyCodeAndMeta) {
                 case CTRL | KeyEvent.KEYCODE_TAB:
                 case CTRL | KeyEvent.KEYCODE_PAGE_DOWN:
+                case KeyEvent.KEYCODE_BUTTON_R1:
                     if (tabSwitchingEnabled && count > 1) {
                         TabModelUtils.setIndex(curModel, (curModel.index() + 1) % count);
                     }
                     return true;
                 case CTRL | SHIFT | KeyEvent.KEYCODE_TAB:
                 case CTRL | KeyEvent.KEYCODE_PAGE_UP:
+                case KeyEvent.KEYCODE_BUTTON_L1:
                     if (tabSwitchingEnabled && count > 1) {
                         TabModelUtils.setIndex(curModel, (curModel.index() + count - 1) % count);
                     }
                     return true;
                 case CTRL | KeyEvent.KEYCODE_W:
                 case CTRL | KeyEvent.KEYCODE_F4:
+                case KeyEvent.KEYCODE_BUTTON_B:
                     TabModelUtils.closeCurrentTab(curModel);
                     return true;
                 case CTRL | KeyEvent.KEYCODE_F:
@@ -190,6 +203,7 @@ public class KeyboardShortcuts {
                     return true;
                 case CTRL | KeyEvent.KEYCODE_L:
                 case ALT | KeyEvent.KEYCODE_D:
+                case KeyEvent.KEYCODE_BUTTON_X:
                     activity.onMenuOrKeyboardAction(R.id.focus_url_bar, false);
                     return true;
                 case KeyEvent.KEYCODE_BOOKMARK:
@@ -227,6 +241,7 @@ public class KeyboardShortcuts {
                     return true;
                 case ALT | KeyEvent.KEYCODE_DPAD_RIGHT:
                 case KeyEvent.KEYCODE_FORWARD:
+                case KeyEvent.KEYCODE_BUTTON_START:
                     tab = activity.getActivityTab();
                     if (tab != null && tab.canGoForward()) tab.goForward();
                     return true;