Add functions to DesktopViewInterface

remoting/android/java/src/org/chromium/chromoting/TouchInputHandler.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting;
 
 import android.content.Context;
 import android.graphics.Matrix;
 import android.graphics.Point;
 import android.graphics.PointF;
@@ skipping 276 matching lines @@
                             new SimulatedTouchInputStrategy(mRenderData, injector, mContext));
                 }
                 break;
 
             default:
                 // Unreachable, but required by Google Java style and findbugs.
                 assert false : "Unreached";
         }
 
         // Ensure the cursor state is updated appropriately.
-        // TODO (zijiehe): Move repaint control out of DesktopView.
-        if (mViewer instanceof DesktopView) {
-            ((DesktopView) mViewer).requestRepaint();
-        }
+        mViewer.cursorVisibilityChanged();
     }
 
     private void handleSoftInputMethodVisibilityChanged(
             SoftInputMethodVisibilityChangedEventParameter parameter) {
         synchronized (mRenderData) {
             if (parameter.visible) {
                 mDesktopCanvas.setInputMethodOffsetValues(
                         mRenderData.screenWidth - parameter.right,
                         mRenderData.screenHeight - parameter.bottom);
             } else {
@@ skipping 139 matching lines @@
     }
 
     /** Moves the cursor to the specified position on the remote host. */
     private void moveCursor(int newX, int newY) {
         synchronized (mRenderData) {
             boolean cursorMoved = mRenderData.setCursorPosition(newX, newY);
             if (cursorMoved) {
                 mInputStrategy.injectCursorMoveEvent(newX, newY);
             }
         }
+        mViewer.cursorMoved();
     }
 
     /** Processes a (multi-finger) swipe gesture. */
     private boolean onSwipe() {
         if (mTotalMotionY > mSwipeThreshold) {
             // Swipe down occurred.
             mViewer.showActionBar();
         } else if (mTotalMotionY < -mSwipeThreshold) {
             // Swipe up occurred.
             mViewer.showKeyboard();
@@ skipping 184 matching lines @@
                 case 2:
                     return InputStub.BUTTON_RIGHT;
                 case 3:
                     return InputStub.BUTTON_MIDDLE;
                 default:
                     return InputStub.BUTTON_UNDEFINED;
             }
         }
     }
 }