Show Ash like <select> popup on Android tablets

ui/android/java/src/org/chromium/ui/DropdownAdapter.java

Index: ui/android/java/src/org/chromium/ui/DropdownAdapter.java
diff --git a/ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java b/ui/android/java/src/org/chromium/ui/DropdownAdapter.java
similarity index 58%
rename from ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java
rename to ui/android/java/src/org/chromium/ui/DropdownAdapter.java
index 94608af980270c8b4391044118bf88bb82b2c297..42fb11a76b4d785fb4176d29a667861294f5a48f 100644
--- a/ui/android/java/src/org/chromium/ui/autofill/AutofillListAdapter.java
+++ b/ui/android/java/src/org/chromium/ui/DropdownAdapter.java
@@ -2,7 +2,7 @@
 // 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;
+package org.chromium.ui;
 
 import android.content.Context;
 import android.graphics.Color;
@@ -15,24 +15,30 @@ import android.widget.ArrayAdapter;
 import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
-import org.chromium.ui.R;
 
-import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
 
 /**
- * Autofill suggestion adapter for AutofillWindow.
+ * Dropdown item adapter for DropdownPopupWindow.
  */
-public class AutofillListAdapter extends ArrayAdapter<AutofillSuggestion> {
+public class DropdownAdapter extends ArrayAdapter<DropdownItem> {
     private Context mContext;
     private Set<Integer> mSeparators;
+    private boolean mAreAllItemsEnabled;
 
-    AutofillListAdapter(Context context,
-                        ArrayList<AutofillSuggestion> objects,
-                        Set<Integer> separators) {
-        super(context, R.layout.autofill_text, objects);
+    public DropdownAdapter(Context context, List<DropdownItem> items, Set<Integer> separators) {
+        super(context, R.layout.dropdown_item, items);
         mSeparators = separators;
         mContext = context;
+
+        mAreAllItemsEnabled = true;
+        for (int i = 0; i < items.size(); i++) {
+            if (items.get(i).isEnabled()) {
+                mAreAllItemsEnabled = false;
+                break;
+            }
+        }
     }
 
     @Override
@@ -41,33 +47,36 @@ public class AutofillListAdapter extends ArrayAdapter<AutofillSuggestion> {
         if (convertView == null) {
             LayoutInflater inflater =
                     (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-            layout = inflater.inflate(R.layout.autofill_text, null);
-            ApiCompatibilityUtils.setBackgroundForView(layout, new AutofillDividerDrawable());
+            layout = inflater.inflate(R.layout.dropdown_item, null);
+            ApiCompatibilityUtils.setBackgroundForView(layout, new DropdownDividerDrawable());
         }
-        TextView labelView = (TextView) layout.findViewById(R.id.autofill_label);
-        labelView.setText(getItem(position).mLabel);
 
-        AutofillDividerDrawable divider = (AutofillDividerDrawable) layout.getBackground();
-        int height = mContext.getResources().getDimensionPixelSize(R.dimen.autofill_text_height);
+        DropdownItem item = getItem(position);
+
+        TextView labelView = (TextView) layout.findViewById(R.id.dropdown_label);
+        labelView.setText(item.getLabel());
+
+        DropdownDividerDrawable divider = (DropdownDividerDrawable) layout.getBackground();
+        int height = mContext.getResources().getDimensionPixelSize(R.dimen.dropdown_item_height);
         if (position == 0) {
             divider.setColor(Color.TRANSPARENT);
         } else {
             int dividerHeight = mContext.getResources().getDimensionPixelSize(
-                    R.dimen.autofill_text_divider_height);
+                    R.dimen.dropdown_item_divider_height);
             height += dividerHeight;
             divider.setHeight(dividerHeight);
-            if (mSeparators.contains(position)) {
+            if (mSeparators != null && mSeparators.contains(position)) {
                 divider.setColor(mContext.getResources().getColor(
-                                 R.color.autofill_dark_divider_color));
+                                 R.color.dropdown_dark_divider_color));
             } else {
                 divider.setColor(mContext.getResources().getColor(
-                                 R.color.autofill_divider_color));
+                                 R.color.dropdown_divider_color));
             }
         }
         layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, height));
 
-        TextView sublabelView = (TextView) layout.findViewById(R.id.autofill_sublabel);
-        CharSequence sublabel = getItem(position).mSublabel;
+        TextView sublabelView = (TextView) layout.findViewById(R.id.dropdown_sublabel);
+        CharSequence sublabel = item.getSublabel();
         if (TextUtils.isEmpty(sublabel)) {
             sublabelView.setVisibility(View.GONE);
         } else {
@@ -77,4 +86,15 @@ public class AutofillListAdapter extends ArrayAdapter<AutofillSuggestion> {
 
         return layout;
     }
+
+    @Override
+    public boolean areAllItemsEnabled() {
+        return mAreAllItemsEnabled;
+    }
+
+    @Override
+    public boolean isEnabled(int position) {
+        if (position < 0 || position >= getCount()) return false;
+        return getItem(position).isEnabled();
+    }
 }