Implement the autofill UI for chromium powered android webview.

android_webview/java/src/org/chromium/android_webview/AwAutofillManagerDelegate.java

Index: android_webview/java/src/org/chromium/android_webview/AwAutofillManagerDelegate.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwAutofillManagerDelegate.java b/android_webview/java/src/org/chromium/android_webview/AwAutofillManagerDelegate.java
new file mode 100644
index 0000000000000000000000000000000000000000..ca0c5a608a144b39a86105928944480f026a1354
--- /dev/null
+++ b/android_webview/java/src/org/chromium/android_webview/AwAutofillManagerDelegate.java
@@ -0,0 +1,123 @@
+// Copyright (c) 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.android_webview;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AbsoluteLayout;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.ui.ViewAndroidDelegate;
+import org.chromium.ui.autofill.AutofillPopup;
+import org.chromium.ui.autofill.AutofillSuggestion;
+
+// Java counterpart to the AwAutofillManagerDelegate. This class is owned by
+// AwContents and has a weak reference from native side.
+@JNINamespace("android_webview")
+public class AwAutofillManagerDelegate {
+
+    private final int mNativeAwAutofillManagerDelegate;
+    private AutofillPopup mAutofillPopup;
+    private ViewGroup mContainerView;
+    private double mDIPScale;
+    private ContentViewCore mContentViewCore;
+
+    @CalledByNative
+    public static AwAutofillManagerDelegate create(int nativeDelegate) {
+        return new AwAutofillManagerDelegate(nativeDelegate);
+    }
+
+    private AwAutofillManagerDelegate(int nativeAwAutofillManagerDelegate) {
+        mNativeAwAutofillManagerDelegate = nativeAwAutofillManagerDelegate;
+    }
+
+    public void init(ContentViewCore contentViewCore, double DIPScale) {
+        mContentViewCore = contentViewCore;
+        mContainerView = contentViewCore.getContainerView();
+        mDIPScale = DIPScale;
+    }
+
+    @CalledByNative
+    private void showAutofillPopup(float x, float y, float width, float height,
+            AutofillSuggestion[] suggestions) {
+
+        if (mContentViewCore == null) return;
+
+        if (mAutofillPopup == null) {
+            mAutofillPopup = new AutofillPopup(
+                mContentViewCore.getContext(),
+                getViewAndroidDelegate(),
+                new AutofillPopup.AutofillPopupDelegate() {
+                    public void requestHide() { }
+                    public void suggestionSelected(int listIndex) {
+                        nativeSuggestionSelected(mNativeAwAutofillManagerDelegate, listIndex);
+                    }
+                });
+        }
+        mAutofillPopup.setAnchorRect(x, y, width, height);
+        mAutofillPopup.show(suggestions);
+    }
+
+    @CalledByNative
+    public void hideAutofillPopup() {
+        if (mAutofillPopup == null)
+            return;
+        mAutofillPopup.hide();
+        mAutofillPopup = null;
+    }
+
+    private ViewAndroidDelegate getViewAndroidDelegate() {
+        return new ViewAndroidDelegate() {
+            @Override
+            public View acquireAnchorView() {
+                View anchorView = new View(mContentViewCore.getContext());
+                mContainerView.addView(anchorView);
+                return anchorView;
+            }
+
+            @Override
+            public void setAnchorViewPosition(
+                    View view, float x, float y, float width, float height) {
+                assert(view.getParent() == mContainerView);
+
+                int leftMargin = (int)Math.round(x * mDIPScale);
+                int topMargin = (int)mContentViewCore.getRenderCoordinates().getContentOffsetYPix()
+                        + (int)Math.round(y * mDIPScale);
+
+                AbsoluteLayout.LayoutParams lp = new AbsoluteLayout.LayoutParams((int)width,
+                        (int)height, leftMargin, topMargin);
+                view.setLayoutParams(lp);
+            }
+
+            @Override
+            public void releaseAnchorView(View anchorView) {
+                mContainerView.removeView(anchorView);
+            }
+        };
+    }
+
+    @CalledByNative
+    private static AutofillSuggestion[] createAutofillSuggestionArray(int size) {
+        return new AutofillSuggestion[size];
+    }
+
+    /**
+     * @param array AutofillSuggestion array that should get a new suggestion added.
+     * @param index Index in the array where to place a new suggestion.
+     * @param name Name of the suggestion.
+     * @param label Label of the suggestion.
+     * @param uniqueId Unique suggestion id.
+     */
+    @CalledByNative
+    private static void addToAutofillSuggestionArray(AutofillSuggestion[] array, int index,
+            String name, String label, int uniqueId) {
+        array[index] = new AutofillSuggestion(name, label, uniqueId);
+    }
+
+    private native void nativeSuggestionSelected(int nativeAwAutofillManagerDelegate, int position);
+}