Initial support for keyboard navigation

 Bug: 6019693

Change-Id: I8d29a5cb46fc59bb2f53e8d334bc767b5ed16901

Author: jreck

core/java/android/webkit/WebView.java

@@ -5555,7 +5555,7 @@ public boolean onKeyDown(int keyCode, KeyEvent event) {
             return false;
         }
 
-        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
+        if (isEnterActionKey(keyCode)) {
             switchOutDrawHistory();
             boolean wantsKeyEvents = nativeCursorNodePointer() == 0
                 || nativeCursorWantsKeyEvents();
@@ -5704,33 +5704,35 @@ public boolean onKeyUp(int keyCode, KeyEvent event) {
                 return true; // discard press if copy in progress
             }
 
-            // perform the single click
-            Rect visibleRect = sendOurVisibleRect();
-            // Note that sendOurVisibleRect calls viewToContent, so the
-            // coordinates should be in content coordinates.
-            if (!nativeCursorIntersects(visibleRect)) {
-                return false;
-            }
-            WebViewCore.CursorData data = cursorData();
-            mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data);
-            playSoundEffect(SoundEffectConstants.CLICK);
-            if (nativeCursorIsTextInput()) {
-                rebuildWebTextView();
-                centerKeyPressOnTextField();
-                if (inEditingMode()) {
-                    mWebTextView.setDefaultSelection();
+            if (!sDisableNavcache) {
+                // perform the single click
+                Rect visibleRect = sendOurVisibleRect();
+                // Note that sendOurVisibleRect calls viewToContent, so the
+                // coordinates should be in content coordinates.
+                if (!nativeCursorIntersects(visibleRect)) {
+                    return false;
+                }
+                WebViewCore.CursorData data = cursorData();
+                mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data);
+                playSoundEffect(SoundEffectConstants.CLICK);
+                if (nativeCursorIsTextInput()) {
+                    rebuildWebTextView();
+                    centerKeyPressOnTextField();
+                    if (inEditingMode()) {
+                        mWebTextView.setDefaultSelection();
+                    }
+                    return true;
+                }
+                clearTextEntry();
+                nativeShowCursorTimed();
+                if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) {
+                    return true;
+                }
+                if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) {
+                    mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame,
+                            nativeCursorNodePointer());
+                    return true;
                 }
-                return true;
-            }
-            clearTextEntry();
-            nativeShowCursorTimed();
-            if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) {
-                return true;
-            }
-            if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) {
-                mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame,
-                        nativeCursorNodePointer());
-                return true;
             }
         }
 

core/java/android/webkit/WebViewCore.java

@@ -332,6 +332,15 @@ private void formDidBlur(int nodePointer) {
                 nodePointer, 0).sendToTarget();
     }
 
+    /**
+     * Called by JNI when the focus node changed.
+     */
+    private void focusNodeChanged(WebKitHitTest hitTest) {
+        if (mWebView == null) return;
+        mWebView.mPrivateHandler.obtainMessage(WebView.HIT_TEST_RESULT, hitTest)
+                .sendToTarget();
+    }
+
     /**
      * Called by JNI.  Open a file chooser to upload a file.
      * @param acceptType The value of the 'accept' attribute of the
@@ -614,7 +623,6 @@ private native String nativeRetrieveAnchorText(int nativeClass,
             int x, int y);
     private native String nativeRetrieveImageSource(int nativeClass,
             int x, int y);
-    private native void nativeStopPaintingCaret(int nativeClass);
     private native void nativeTouchUp(int nativeClass,
             int touchGeneration, int framePtr, int nodePtr, int x, int y);
 
@@ -1530,9 +1538,6 @@ public void handleMessage(Message msg) {
                             nativeMoveMouseIfLatest(mNativeClass,
                                     cData.mMoveGeneration,
                                     cData.mFrame, cData.mX, cData.mY);
-                            if (msg.arg1 == 1) {
-                                nativeStopPaintingCaret(mNativeClass);
-                            }
                             break;
 
                         case REQUEST_CURSOR_HREF: {