Implement the autofill UI for chromium powered android webview.

This CL depends on https://codereview.chromium.org/15097004/.

Bug: b/5013406

TBR=battre@chromium.org, palmer@chromium.org
NOTRY=true

contributed by sgurun@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16212007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@208986 0039d316-1c4b-4281-b951-d872f2087c98

7 files changed, 356 insertions, 0 deletions

diff --git a/ui/android/java/res/drawable/autofill_popup_background.xml b/ui/android/java/res/drawable/autofill_popup_background.xml
new file mode 100644
index 0000000..0f8d38b
--- /dev/null
+++ b/ui/android/java/res/drawable/autofill_popup_background.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- Copyright 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.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_above_anchor="true"
+        android:drawable="@drawable/autofill_popup_background_up" />
+    <item android:drawable="@drawable/autofill_popup_background_down" />
+</selector>
\ No newline at end of file
diff --git a/ui/android/java/res/layout/autofill_text.xml b/ui/android/java/res/layout/autofill_text.xml
new file mode 100644
index 0000000..4a69862
--- /dev/null
+++ b/ui/android/java/res/layout/autofill_text.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:id="@+id/autofill_menu_text"
+              android:layout_width="fill_parent"
+              android:layout_height="44dp"
+              android:minHeight="44dp"
+              android:orientation="vertical"
+              android:gravity="center_vertical">
+  <TextView android:id="@+id/autofill_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:ellipsize="end"
+            android:singleLine="true"
+            android:textSize="18sp"
+            android:includeFontPadding="false"
+            android:layout_marginStart="10dp"
+            android:layout_marginEnd="10dp"/>
+  <TextView android:id="@+id/autofill_sublabel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="14sp"
+            android:textColor="#8b8b8b"
+            android:ellipsize="end"
+            android:singleLine="true"
+            android:includeFontPadding="false"
+            android:layout_marginStart="10dp"
+            android:layout_marginEnd="10dp"/>
+</LinearLayout>
diff --git a/ui/android/java/res/values-v17/styles.xml b/ui/android/java/res/values-v17/styles.xml
new file mode 100644
index 0000000..8295ddf
--- /dev/null
+++ b/ui/android/java/res/values-v17/styles.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- Copyright 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.
+-->
+
+<resources>
+    <style name="AutofillPopupWindow" parent="@android:style/Widget.ListPopupWindow">
+        <item name="android:popupBackground">@drawable/autofill_popup_background</item>
+    </style>
+</resources>
\ No newline at end of file
diff --git a/ui/android/java/resource_map/org/chromium/ui/R.java b/ui/android/java/resource_map/org/chromium/ui/R.java
index 0577d39..0c61b4b 100644
--- a/ui/android/java/resource_map/org/chromium/ui/R.java
+++ b/ui/android/java/resource_map/org/chromium/ui/R.java
@@ -27,6 +27,8 @@ public final class R {
         public static int color_picker_dialog_title;
     }
     public static final class id {
+        public static int autofill_label;
+        public static int autofill_sublabel;
         public static int selected_color_view;
         public static int title;
         public static int more_colors_button;
@@ -39,6 +41,7 @@ public final class R {
         public static int seek_bar;
     }
     public static final class layout {
+        public static int autofill_text;
         public static int color_picker_dialog_title;
         public static int color_picker_dialog_content;
         public static int color_picker_advanced_component;
@@ -46,4 +49,7 @@ public final class R {
     public static final class drawable {
         public static int color_picker_advanced_select_handle;
     }
+    public static final class style {
+        public static int AutofillPopupWindow;
+    }
 }
diff --git a/ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java b/ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java
new file mode 100644
index 0000000..62203dc
--- /dev/null
+++ b/ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java
@@ -0,0 +1,54 @@
+// Copyright 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.ui.autofill;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import org.chromium.ui.R;
+
+import java.util.ArrayList;
+
+/**
+ * Autofill suggestion adapter for AutofillWindow.
+ */
+public class AutofillListAdapter extends ArrayAdapter<AutofillSuggestion> {
+    private Context mContext;
+
+    AutofillListAdapter(Context context, ArrayList<AutofillSuggestion> objects) {
+        super(context, R.layout.autofill_text, objects);
+        mContext = context;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        View layout = convertView;
+        if (convertView == null) {
+            LayoutInflater inflater =
+                    (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            layout = inflater.inflate(R.layout.autofill_text, null);
+        }
+        TextView labelView = (TextView) layout.findViewById(R.id.autofill_label);
+        labelView.setText(getItem(position).mLabel);
+
+        TextView sublabelView = (TextView) layout.findViewById(R.id.autofill_sublabel);
+        CharSequence sublabel = getItem(position).mSublabel;
+        if (TextUtils.isEmpty(sublabel)) {
+            sublabelView.setVisibility(View.GONE);
+        } else {
+            sublabelView.setText(sublabel);
+            sublabelView.setVisibility(View.VISIBLE);
+        }
+
+        return layout;
+    }
+}
diff --git a/ui/android/java/src/org/chromium/ui/autofill/AutofillPopup.java b/ui/android/java/src/org/chromium/ui/autofill/AutofillPopup.java
new file mode 100644
index 0000000..7cec3c1
--- /dev/null
+++ b/ui/android/java/src/org/chromium/ui/autofill/AutofillPopup.java
@@ -0,0 +1,210 @@
+// Copyright 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.ui.autofill;
+
+import android.content.Context;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnLayoutChangeListener;
+import android.widget.AdapterView;
+import android.widget.ListPopupWindow;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+
+import org.chromium.ui.R;
+import org.chromium.ui.ViewAndroidDelegate;
+
+/**
+ * The Autofill suggestion popup that lists relevant suggestions.
+ */
+public class AutofillPopup extends ListPopupWindow implements AdapterView.OnItemClickListener {
+
+    /**
+     * Constants defining types of Autofill suggestion entries.
+     * Has to be kept in sync with enum in WebAutofillClient.h
+     *
+     * Not supported: MenuItemIDWarningMessage, MenuItemIDSeparator, MenuItemIDClearForm, and
+     * MenuItemIDAutofillOptions.
+     */
+    private static final int ITEM_ID_AUTOCOMPLETE_ENTRY = 0;
+    private static final int ITEM_ID_PASSWORD_ENTRY = -2;
+    private static final int ITEM_ID_DATA_LIST_ENTRY = -6;
+
+    private static final int TEXT_PADDING_DP = 30;
+
+    private final AutofillPopupDelegate mAutofillCallback;
+    private final Context mContext;
+    private final ViewAndroidDelegate mViewAndroidDelegate;
+    private View mAnchorView;
+    private float mAnchorWidth;
+    private float mAnchorHeight;
+    private float mAnchorX;
+    private float mAnchorY;
+    private Paint mLabelViewPaint;
+    private Paint mSublabelViewPaint;
+    private OnLayoutChangeListener mLayoutChangeListener;
+
+    /**
+     * An interface to handle the touch interaction with an AutofillPopup object.
+     */
+    public interface AutofillPopupDelegate {
+        /**
+         * Requests the controller to hide AutofillPopup.
+         */
+        public void requestHide();
+
+        /**
+         * Handles the selection of an Autofill suggestion from an AutofillPopup.
+         * @param listIndex The index of the selected Autofill suggestion.
+         */
+        public void suggestionSelected(int listIndex);
+    }
+
+    /**
+     * Creates an AutofillWindow with specified parameters.
+     * @param context Application context.
+     * @param viewAndroidDelegate View delegate used to add and remove views.
+     * @param autofillCallback A object that handles the calls to the native AutofillPopupView.
+     */
+    public AutofillPopup(Context context, ViewAndroidDelegate viewAndroidDelegate,
+            AutofillPopupDelegate autofillCallback) {
+        super(context, null, 0, R.style.AutofillPopupWindow);
+        mContext = context;
+        mViewAndroidDelegate = viewAndroidDelegate ;
+        mAutofillCallback = autofillCallback;
+
+        setOnItemClickListener(this);
+
+        mAnchorView = mViewAndroidDelegate.acquireAnchorView();
+        mViewAndroidDelegate.setAnchorViewPosition(mAnchorView, mAnchorX, mAnchorY, mAnchorWidth,
+                mAnchorHeight);
+
+        mLayoutChangeListener = new OnLayoutChangeListener() {
+            @Override
+            public void onLayoutChange(View v, int left, int top, int right, int bottom,
+                    int oldLeft, int oldTop, int oldRight, int oldBottom) {
+                if (v == mAnchorView) AutofillPopup.this.show();
+            }
+        };
+
+        mAnchorView.addOnLayoutChangeListener(mLayoutChangeListener);
+        setAnchorView(mAnchorView);
+    }
+
+    @Override
+    public void show() {
+        // An ugly hack to keep the popup from expanding on top of the keyboard.
+        setInputMethodMode(INPUT_METHOD_NEEDED);
+        super.show();
+    }
+
+    /**
+     * Sets the location and the size of the anchor view that the AutofillPopup will use to attach
+     * itself.
+     * @param x X coordinate of the top left corner of the anchor view.
+     * @param y Y coordinate of the top left corner of the anchor view.
+     * @param width The width of the anchor view.
+     * @param height The height of the anchor view.
+     */
+    public void setAnchorRect(float x, float y, float width, float height) {
+        mAnchorWidth = width;
+        mAnchorHeight = height;
+        mAnchorX = x;
+        mAnchorY = y;
+        if (mAnchorView != null) {
+            mViewAndroidDelegate.setAnchorViewPosition(mAnchorView, mAnchorX, mAnchorY,
+                    mAnchorWidth, mAnchorHeight);
+        }
+    }
+
+    /**
+     * Sets the Autofill suggestions to display in the popup and shows the popup.
+     * @param suggestions Autofill suggestion data.
+     */
+    public void show(AutofillSuggestion[] suggestions) {
+        // Remove the AutofillSuggestions with IDs that are not supported by Android
+        ArrayList<AutofillSuggestion> cleanedData = new ArrayList<AutofillSuggestion>();
+        for (int i = 0; i < suggestions.length; i++) {
+            int itemId = suggestions[i].mUniqueId;
+            if (itemId > 0 || itemId == ITEM_ID_AUTOCOMPLETE_ENTRY ||
+                    itemId == ITEM_ID_PASSWORD_ENTRY || itemId == ITEM_ID_DATA_LIST_ENTRY) {
+                cleanedData.add(suggestions[i]);
+            }
+        }
+        setAdapter(new AutofillListAdapter(mContext, cleanedData));
+        // Once the mAnchorRect is resized and placed correctly, it will show the Autofill popup.
+        mAnchorWidth = Math.max(getDesiredWidth(cleanedData), mAnchorWidth);
+        mViewAndroidDelegate.setAnchorViewPosition(mAnchorView, mAnchorX, mAnchorY, mAnchorWidth,
+                mAnchorHeight);
+    }
+
+    /**
+     * Overrides the default dismiss behavior to request the controller to dismiss the view.
+     */
+    @Override
+    public void dismiss() {
+        mAutofillCallback.requestHide();
+    }
+
+    /**
+     * Hides the popup and removes the anchor view from the ContainerView.
+     */
+    public void hide() {
+        super.dismiss();
+        mAnchorView.removeOnLayoutChangeListener(mLayoutChangeListener);
+        mViewAndroidDelegate.releaseAnchorView(mAnchorView);
+    }
+
+    /**
+     * Get desired popup window width by calculating the maximum text length from Autofill data.
+     * @param data Autofill suggestion data.
+     * @return The popup window width in DIP.
+     */
+    private float getDesiredWidth(ArrayList<AutofillSuggestion> data) {
+        if (mLabelViewPaint == null || mSublabelViewPaint == null) {
+            LayoutInflater inflater =
+                    (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            View layout = inflater.inflate(R.layout.autofill_text, null);
+            TextView labelView = (TextView) layout.findViewById(R.id.autofill_label);
+            mLabelViewPaint = labelView.getPaint();
+            TextView sublabelView = (TextView) layout.findViewById(R.id.autofill_sublabel);
+            mSublabelViewPaint = sublabelView.getPaint();
+        }
+
+        float maxTextWidth = 0;
+        Rect bounds = new Rect();
+        for (int i = 0; i < data.size(); ++i) {
+            bounds.setEmpty();
+            String label = data.get(i).mLabel;
+            if (!TextUtils.isEmpty(label)) {
+                mLabelViewPaint.getTextBounds(label, 0, label.length(), bounds);
+            }
+            float labelWidth = bounds.width();
+
+            bounds.setEmpty();
+            String sublabel = data.get(i).mSublabel;
+            if (!TextUtils.isEmpty(sublabel)) {
+                mSublabelViewPaint.getTextBounds(sublabel, 0, sublabel.length(), bounds);
+            }
+
+            float localMax = Math.max(labelWidth, bounds.width());
+            maxTextWidth = Math.max(maxTextWidth, localMax);
+        }
+        // Scale it down to make it unscaled by screen density.
+        maxTextWidth = maxTextWidth / mContext.getResources().getDisplayMetrics().density;
+        // Adding padding.
+        return maxTextWidth + TEXT_PADDING_DP;
+    }
+
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+        mAutofillCallback.suggestionSelected(position);
+    }
+
+}
diff --git a/ui/android/java/src/org/chromium/ui/autofill/AutofillSuggestion.java b/ui/android/java/src/org/chromium/ui/autofill/AutofillSuggestion.java
new file mode 100644
index 0000000..51669ea
--- /dev/null
+++ b/ui/android/java/src/org/chromium/ui/autofill/AutofillSuggestion.java
@@ -0,0 +1,26 @@
+// Copyright 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.ui.autofill;
+
+/**
+ * Autofill suggestion container used to store information needed for each Autofill popup entry.
+ */
+public class AutofillSuggestion {
+    final String mLabel;
+    final String mSublabel;
+    final int mUniqueId;
+
+    /**
+     * Constructs a Autofill suggestion container.
+     * @param name The name of the Autofill suggestion.
+     * @param label The describing label of the Autofill suggestion.
+     * @param uniqueId The unique id used to identify the Autofill suggestion.
+     */
+    public AutofillSuggestion(String name, String label, int uniqueId) {
+        mLabel = name;
+        mSublabel = label;
+        mUniqueId = uniqueId;
+    }
+}
\ No newline at end of file