Refactor ContentViewClient (4/6)

ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.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.ui.base;
 
 import android.content.ClipData;
+import android.content.Intent;
 import android.graphics.Bitmap;
 import android.os.Build;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout.LayoutParams;
 import android.widget.ImageView;
 
 import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 
+import java.net.URISyntaxException;
+
 /**
  * Class to acquire, position, and remove anchor views from the implementing View.
  */
 @JNINamespace("ui")
 public abstract class ViewAndroidDelegate {
 
+    private static final String TAG = "ViewAndroidDelegate";
+
     // TODO(hush): use View#DRAG_FLAG_GLOBAL when Chromium starts to build with API 24.
     private static final int DRAG_FLAG_GLOBAL = 1 << 8;
 
+    private static final String GEO_SCHEME = "geo";
+    private static final String TEL_SCHEME = "tel";
+    private static final String MAILTO_SCHEME = "mailto";
+
     /**
      * @return An anchor view that can be used to anchor decoration views like Autofill popup.
      */
     @CalledByNative
     public View acquireView() {
         ViewGroup containerView = getContainerView();
         if (containerView == null || containerView.getParent() == null) return null;
         View anchorView = new View(containerView.getContext());
         containerView.addView(anchorView);
         return anchorView;
@@ skipping 60 matching lines @@
         ImageView imageView = new ImageView(containerView.getContext());
         imageView.setImageBitmap(shadowImage);
         imageView.layout(0, 0, shadowImage.getWidth(), shadowImage.getHeight());
 
         // TODO(hush): use View#startDragAndDrop when Chromium starts to build with API 24.
         return containerView.startDrag(ClipData.newPlainText(null, text),
                 new View.DragShadowBuilder(imageView), null, DRAG_FLAG_GLOBAL);
     }
 
     /**
+     * Called whenever the background color of the page changes as notified by Blink.
+     * @param color The new ARGB color of the page background.
+     */
+    @CalledByNative
+    public void onBackgroundColorChanged(int color) {}
+
+    /**
+     * Notify the client of the position of the top controls.
+     * @param topControlsOffsetY The Y offset of the top controls in physical pixels.
+     * @param topContentOffsetY The Y offset of the content in physical pixels.
+     */
+    @CalledByNative
+    public void onTopControlsChanged(float topControlsOffsetY, float topContentOffsetY) {}
+
+    /**
+     * Notify the client of the position of the bottom controls.
+     * @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels.
+     * @param bottomContentOffsetY The Y offset of the content in physical pixels.
+     */
+    @CalledByNative
+    public void onBottomControlsChanged(float bottomControlsOffsetY, float bottomContentOffsetY) {}
+
+    /**
+     * Called when a new content intent is requested to be started.
+     * Invokes {@link #startContentIntent(Intent, String, boolean)} only if the parsed
+     * intent is valid and the scheme is acceptable.
+     */
+    @CalledByNative
+    private void onStartContentIntent(String intentUrl, boolean isMainFrame) {
+        Intent intent;
+        try {
+            intent = Intent.parseUri(intentUrl, Intent.URI_INTENT_SCHEME);
+        } catch (URISyntaxException e) {
+            Log.d(TAG, "Bad URI %s", intentUrl, e);
+            return;
+        }
+        String scheme = intent.getScheme();
+        if (!(GEO_SCHEME.equals(scheme) || TEL_SCHEME.equals(scheme)
+                || MAILTO_SCHEME.equals(scheme))) {
+            Log.d(TAG, "Invalid scheme for URI %s", intentUrl);
+            return;
+        }
+        startContentIntent(intent, intentUrl, isMainFrame);
+    }
+
+    /**
+     * Start a new content intent.
+     */
+    public void startContentIntent(Intent intent, String intentUrl, boolean isMainFrame) {}
+
+    /**
      * @return container view that the anchor views are added to. May be null.
      */
     @CalledByNative
     public abstract ViewGroup getContainerView();
 
     /**
      * Create and return a basic implementation of {@link ViewAndroidDelegate} where
      * the container view is not allowed to be changed after initialization.
      * @param containerView {@link ViewGroup} to be used as a container view.
      * @return a new instance of {@link ViewAndroidDelegate}.
      */
     public static ViewAndroidDelegate createBasicDelegate(ViewGroup containerView) {
         return new ViewAndroidDelegate() {
             private ViewGroup mContainerView;
 
             private ViewAndroidDelegate init(ViewGroup containerView) {
                 mContainerView = containerView;
                 return this;
             }
 
             @Override
             public ViewGroup getContainerView() {
                 return mContainerView;
             }
         }.init(containerView);
     }
 }