[Android] Allow text handles to observe position of "parent" view

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

 // Copyright 2012 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.content.browser;
 
 import android.app.Activity;
 import android.app.SearchManager;
 import android.content.ContentResolver;
 import android.content.Context;
@@ skipping 359 matching lines @@
     // Only valid when focused on a text / password field.
     private ImeAdapter mImeAdapter;
     private ImeAdapter.AdapterInputConnectionFactory mAdapterInputConnectionFactory;
     private AdapterInputConnection mInputConnection;
 
     private SelectionHandleController mSelectionHandleController;
     private InsertionHandleController mInsertionHandleController;
 
     private Runnable mDeferredHandleFadeInRunnable;
 
+    private PositionObserver mPositionObserver;
+
     // Size of the viewport in physical pixels as set from onSizeChanged.
     private int mViewportWidthPix;
     private int mViewportHeightPix;
     private int mPhysicalBackingWidthPix;
     private int mPhysicalBackingHeightPix;
     private int mOverdrawBottomHeightPix;
     private int mViewportSizeOffsetWidthPix;
     private int mViewportSizeOffsetHeightPix;
 
     // Cached copy of all positions and scales as reported by the renderer.
@@ skipping 320 matching lines @@
         // necessarily mean we're going to *get* hardware acceleration -- that's
         // up to the Android framework.
         //
         // TODO(husky): Once the native code has been updated so that the
         // HW acceleration flag can be set dynamically (Grace is doing this),
         // move this check into onAttachedToWindow(), where we can test for
         // HW support directly.
         mHardwareAccelerated = hasHardwareAcceleration(mContext);
 
         mContainerView = containerView;
+        mPositionObserver = new ViewPositionObserver(mContainerView);
 
         int windowNativePointer = windowAndroid != null ? windowAndroid.getNativePointer() : 0;
 
         int viewAndroidNativePointer = 0;
         if (windowNativePointer != 0) {
             mViewAndroid = new ViewAndroid(windowAndroid, getViewAndroidDelegate());
             viewAndroidNativePointer = mViewAndroid.getNativePointer();
         }
 
         mNativeContentViewCore = nativeInit(mHardwareAccelerated,
@@ skipping 1262 matching lines @@
         mDownloadDelegate = delegate;
     }
 
     // Called by DownloadController.
     ContentViewDownloadDelegate getDownloadDelegate() {
         return mDownloadDelegate;
     }
 
     private SelectionHandleController getSelectionHandleController() {
         if (mSelectionHandleController == null) {
-            mSelectionHandleController = new SelectionHandleController(getContainerView()) {
+            mSelectionHandleController = new SelectionHandleController(
+                    getContainerView(), mPositionObserver) {
                 @Override
                 public void selectBetweenCoordinates(int x1, int y1, int x2, int y2) {
                     if (mNativeContentViewCore != 0 && !(x1 == x2 && y1 == y2)) {
                         nativeSelectBetweenCoordinates(mNativeContentViewCore,
                                 x1, y1 - mRenderCoordinates.getContentOffsetYPix(),
                                 x2, y2 - mRenderCoordinates.getContentOffsetYPix());
                     }
                 }
 
                 @Override
                 public void showHandles(int startDir, int endDir) {
                     super.showHandles(startDir, endDir);
                     showSelectActionBar();
                 }
 
             };
 
             mSelectionHandleController.hideAndDisallowAutomaticShowing();
         }
 
         return mSelectionHandleController;
     }
 
     private InsertionHandleController getInsertionHandleController() {
         if (mInsertionHandleController == null) {
-            mInsertionHandleController = new InsertionHandleController(getContainerView()) {
+            mInsertionHandleController = new InsertionHandleController(
+                    getContainerView(), mPositionObserver) {
                 private static final int AVERAGE_LINE_HEIGHT = 14;
 
                 @Override
                 public void setCursorPosition(int x, int y) {
                     if (mNativeContentViewCore != 0) {
                         nativeMoveCaret(mNativeContentViewCore,
                                 x, y - mRenderCoordinates.getContentOffsetYPix());
                     }
                 }
 
@@ skipping 1220 matching lines @@
 
     private native void nativeAttachExternalVideoSurface(
             int nativeContentViewCoreImpl, int playerId, Surface surface);
 
     private native void nativeDetachExternalVideoSurface(
             int nativeContentViewCoreImpl, int playerId);
 
     private native void nativeSetAccessibilityEnabled(
             int nativeContentViewCoreImpl, boolean enabled);
 }