Introduce ViewRoot forwarding input/view events to native

content/shell/android/java/src/org/chromium/content_shell/Shell.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_shell;
 
 import android.app.Activity;
 import android.content.Context;
 import android.graphics.drawable.ClipDrawable;
 import android.text.TextUtils;
@@ skipping 19 matching lines @@
 import org.chromium.content.browser.ContentVideoViewEmbedder;
 import org.chromium.content.browser.ContentView;
 import org.chromium.content.browser.ContentViewClient;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content.browser.ContentViewRenderView;
 import org.chromium.content_public.browser.ActionModeCallbackHelper;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.NavigationController;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.ViewAndroidDelegate;
-import org.chromium.ui.base.WindowAndroid;
+import org.chromium.ui.base.ViewRoot;
 
 /**
  * Container for the various UI components that make up a shell window.
  */
 @JNINamespace("content")
 public class Shell extends LinearLayout {
 
     private static final long COMPLETED_PROGRESS_TIMEOUT_MS = 200;
 
     private final Runnable mClearProgressRunnable = new Runnable() {
         @Override
         public void run() {
             mProgressDrawable.setLevel(0);
         }
     };
 
     private ContentViewCore mContentViewCore;
     private WebContents mWebContents;
     private NavigationController mNavigationController;
     private ContentViewClient mContentViewClient;
     private EditText mUrlTextView;
     private ImageButton mPrevButton;
     private ImageButton mNextButton;
     private ImageButton mStopReloadButton;
 
     private ClipDrawable mProgressDrawable;
 
     private long mNativeShell;
     private ContentViewRenderView mContentViewRenderView;
-    private WindowAndroid mWindow;
+    private ViewRoot mViewRoot;
 
     private boolean mLoading;
     private boolean mIsFullscreen;
 
     /**
      * Constructor for inflating via XML.
      */
     public Shell(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
@@ skipping 13 matching lines @@
                             FrameLayout.LayoutParams.MATCH_PARENT,
                             FrameLayout.LayoutParams.MATCH_PARENT));
         }
         mContentViewRenderView = contentViewRenderView;
     }
 
     /**
      * Initializes the Shell for use.
      *
      * @param nativeShell The pointer to the native Shell object.
-     * @param window The owning window for this shell.
+     * @param viewRoot {@link ViewRoot} used to forward events to native.
      * @param client The {@link ContentViewClient} to be bound to any current or new
      *               {@link ContentViewCore}s associated with this shell.
      */
-    public void initialize(long nativeShell, WindowAndroid window, ContentViewClient client) {
+    public void initialize(long nativeShell, ViewRoot viewRoot, ContentViewClient client) {
         mNativeShell = nativeShell;
-        mWindow = window;
+        mViewRoot = viewRoot;
         mContentViewClient = client;
     }
 
     /**
      * Closes the shell and cleans up the native instance, which will handle destroying all
      * dependencies.
      */
     public void close() {
         if (mNativeShell == 0) return;
         nativeCloseShell(mNativeShell);
     }
 
     @CalledByNative
     private void onNativeDestroyed() {
-        mWindow = null;
         mNativeShell = 0;
         mContentViewCore.destroy();
     }
 
     /**
      * @return Whether the Shell has been destroyed.
      * @see #onNativeDestroyed()
      */
     public boolean isDestroyed() {
         return mNativeShell == 0;
@@ skipping 154 matching lines @@
      * Initializes the ContentView based on the native tab contents pointer passed in.
      * @param webContents A {@link WebContents} object.
      */
     @SuppressWarnings("unused")
     @CalledByNative
     private void initFromNativeTabContents(WebContents webContents) {
         Context context = getContext();
         mContentViewCore = new ContentViewCore(context, "");
         ContentView cv = ContentView.createContentView(context, mContentViewCore);
         mContentViewCore.initialize(ViewAndroidDelegate.createBasicDelegate(cv), cv,
-                webContents, mWindow);
+                webContents, mViewRoot);
         mContentViewCore.setActionModeCallback(defaultActionCallback());
         mContentViewCore.setContentViewClient(mContentViewClient);
         mWebContents = mContentViewCore.getWebContents();
         mNavigationController = mWebContents.getNavigationController();
         if (getParent() != null) mContentViewCore.onShow();
         if (mWebContents.getUrl() != null) {
             mUrlTextView.setText(mWebContents.getUrl());
         }
         ((FrameLayout) findViewById(R.id.contentview_holder)).addView(cv,
                 new FrameLayout.LayoutParams(
@@ skipping 93 matching lines @@
                 Context.INPUT_METHOD_SERVICE);
         if (visible) {
             imm.showSoftInput(mUrlTextView, InputMethodManager.SHOW_IMPLICIT);
         } else {
             imm.hideSoftInputFromWindow(mUrlTextView.getWindowToken(), 0);
         }
     }
 
     private static native void nativeCloseShell(long shellPtr);
 }