Factor out ContentViewAndroidDelegate

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsAnchorViewTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwContentsAnchorViewTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsAnchorViewTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsAnchorViewTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..0e2c68dc738ecc3e537d42cac8f1add663b9c054
--- /dev/null
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsAnchorViewTest.java
@@ -0,0 +1,186 @@
+// Copyright 2016 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.android_webview.test;
+
+import android.test.UiThreadTest;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.view.View;
+import android.view.ViewGroup.LayoutParams;
+import android.widget.FrameLayout;
+
+import org.chromium.android_webview.AwViewAndroidDelegate;
+import org.chromium.base.test.util.Feature;
+import org.chromium.ui.base.ViewAndroidDelegate;
+import org.chromium.ui.gfx.DeviceDisplayInfo;
+
+/**
+ * Tests anchor views are correctly added/removed when their container view is updated.
+ */
+public class AwContentsAnchorViewTest extends AwTestBase {
+
+    private TestAwContentsClient mContentsClient = new TestAwContentsClient();
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testMovedAndRemovedAnchorViewIsNotTransferred() throws Throwable {
+        // Add, move and remove anchorView
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView = addAnchorView(containerView);
+        setLayoutParams(containerView, anchorView, 1, 2);
+        removeAnchorView(containerView, anchorView);
+
+        // Replace container view
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+
+        // Verify that no anchor view is transferred between containerViews
+        assertFalse(isViewInContainer(containerView, anchorView));
+        assertFalse(isViewInContainer(updatedContainerView, anchorView));
+    }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testTransferAnchorView() throws Throwable {
+        // Add anchor view
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView = addAnchorView(containerView);
+        LayoutParams layoutParams = anchorView.getLayoutParams();
+
+        // Replace container view
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+        verifyAnchorViewCorrectlyTransferred(
+                containerView, anchorView, updatedContainerView, layoutParams);
+    }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testTransferMovedAnchorView() throws Throwable {
+        // Add anchor view and move it
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView = addAnchorView(containerView);
+        LayoutParams layoutParams = setLayoutParams(containerView, anchorView, 1, 2);
+
+        // Replace container view
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+
+        verifyAnchorViewCorrectlyTransferred(
+                containerView, anchorView, updatedContainerView, layoutParams);
+    }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testRemoveTransferedAnchorView() throws Throwable {
+        // Add anchor view
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView = addAnchorView(containerView);
+
+        // Replace container view
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+
+        verifyAnchorViewCorrectlyTransferred(containerView, anchorView, updatedContainerView);
+
+        // Remove transferred anchor view
+        removeAnchorView(containerView, anchorView);
+    }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testMoveTransferedAnchorView() throws Throwable {
+        // Add anchor view
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView = addAnchorView(containerView);
+        LayoutParams layoutParams = anchorView.getLayoutParams();
+
+        // Replace container view
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+
+        verifyAnchorViewCorrectlyTransferred(
+                containerView, anchorView, updatedContainerView, layoutParams);
+
+        // Move transferred anchor view
+        assertFalse(areEqual(layoutParams, setLayoutParams(containerView, anchorView, 1, 2)));
+    }
+
+    @Feature({"AndroidWebView"})
+    @SmallTest
+    @UiThreadTest
+    public void testTransferMultipleMovedAnchorViews() throws Throwable {
+        // Add and move anchorView1
+        AwTestContainerView containerView = createAwTestContainerViewOnMainSync(mContentsClient);
+        View anchorView1 = addAnchorView(containerView);
+        LayoutParams layoutParams1 = setLayoutParams(containerView, anchorView1, 1, 2);
+
+        // Add and move anchorView2
+        View anchorView2 = addAnchorView(containerView);
+        LayoutParams layoutParams2 = setLayoutParams(containerView, anchorView2, 2, 4);
+
+        // Replace containerView
+        FrameLayout updatedContainerView = updateContainerView(containerView);
+
+        // Verify that anchor views are transfered with the same layout params.
+        assertFalse(isViewInContainer(containerView, anchorView1));
+        assertFalse(isViewInContainer(containerView, anchorView2));
+        assertTrue(isViewInContainer(updatedContainerView, anchorView1));
+        assertTrue(isViewInContainer(updatedContainerView, anchorView2));
+        assertTrue(areEqual(layoutParams1, anchorView1.getLayoutParams()));
+        assertTrue(areEqual(layoutParams2, anchorView2.getLayoutParams()));
+    }
+
+    private static View addAnchorView(AwTestContainerView containerView) {
+        View anchorView = getViewDelegate(containerView).acquireView();
+        assertTrue(isViewInContainer(containerView, anchorView));
+        return anchorView;
+    }
+
+    private static void removeAnchorView(AwTestContainerView containerView, View anchorView) {
+        getViewDelegate(containerView).removeView(anchorView);
+        assertFalse(isViewInContainer(containerView, anchorView));
+    }
+
+    private static LayoutParams setLayoutParams(AwTestContainerView containerView, View anchorView,
+                int coords, int dimension) {
+        ViewAndroidDelegate delegate = getViewDelegate(containerView);
+        float scale = (float) DeviceDisplayInfo.create(containerView.getContext()).getDIPScale();
+        delegate.setViewPosition(anchorView, coords, coords, dimension, dimension, scale, 10, 10);
+        return anchorView.getLayoutParams();
+    }
+
+    private FrameLayout updateContainerView(AwTestContainerView oldContainerView) {
+        FrameLayout containerView  = new FrameLayout(getActivity());
+        getActivity().addView(containerView);
+        AwViewAndroidDelegate delegate = (AwViewAndroidDelegate) getViewDelegate(oldContainerView);
+        delegate.updateCurrentContainerView(containerView);
+        return containerView;
+    }
+
+    private static void verifyAnchorViewCorrectlyTransferred(FrameLayout containerView,
+            View anchorView, FrameLayout updatedContainerView, LayoutParams expectedParams) {
+        assertTrue(areEqual(expectedParams, anchorView.getLayoutParams()));
+        verifyAnchorViewCorrectlyTransferred(containerView, anchorView, updatedContainerView);
+    }
+
+    private static void verifyAnchorViewCorrectlyTransferred(FrameLayout containerView,
+            View anchorView, FrameLayout updatedContainerView) {
+        assertFalse(isViewInContainer(containerView, anchorView));
+        assertTrue(isViewInContainer(updatedContainerView, anchorView));
+        assertSame(anchorView, updatedContainerView.getChildAt(0));
+    }
+
+    private static boolean areEqual(LayoutParams params1, LayoutParams params2) {
+        return params1.height == params2.height && params1.width == params2.width;
+    }
+
+    private static boolean isViewInContainer(FrameLayout containerView, View view) {
+        return containerView.indexOfChild(view) != -1;
+    }
+
+    private static ViewAndroidDelegate getViewDelegate(AwTestContainerView containerView) {
+        return containerView.getAwContents().getContentViewCore().getViewAndroidDelegate();
+    }
+}