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/DropdownAdapter.java b/ui/android/java/src/org/chromium/ui/DropdownAdapter.java
new file mode 100644
index 0000000000000000000000000000000000000000..4b218b3d48cccbdb308a20c861221fdd0f65e6bf
--- /dev/null
+++ b/ui/android/java/src/org/chromium/ui/DropdownAdapter.java
@@ -0,0 +1,119 @@
+// 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;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.Typeface;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AbsListView.LayoutParams;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import org.chromium.base.ApiCompatibilityUtils;
+
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Dropdown item adapter for DropdownPopupWindow.
+ */
+public class DropdownAdapter extends ArrayAdapter<DropdownItem> {
+    private Context mContext;
+    private Set<Integer> mSeparators;
+    private boolean mAreAllItemsEnabled;
+
+    public DropdownAdapter(Context context, List<DropdownItem> items, Set<Integer> separators) {
+        super(context, R.layout.dropdown_item, items);
+        mSeparators = separators;
+        mContext = context;
+        mAreAllItemsEnabled = checkAreAllItemsEnabled();
+    }
+
+    public DropdownAdapter(Context context, DropdownItem[] items, Set<Integer> separators) {
+        super(context, R.layout.dropdown_item, items);
+        mSeparators = separators;
+        mContext = context;
+        mAreAllItemsEnabled = checkAreAllItemsEnabled();
+    }
+
+    private boolean checkAreAllItemsEnabled() {
+        for (int i = 0; i < getCount(); i++) {
+            DropdownItem item = getItem(i);
+            if (item.isEnabled() && !item.isGroupHeader()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @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.dropdown_item, null);
+            ApiCompatibilityUtils.setBackgroundForView(layout, new DropdownDividerDrawable());
+        }
+
+        DropdownItem item = getItem(position);
+
+        TextView labelView = (TextView) layout.findViewById(R.id.dropdown_label);
+        labelView.setText(item.getLabel());
+
+        labelView.setEnabled(item.isEnabled());
+        if (item.isGroupHeader()) {
+            labelView.setTypeface(null, Typeface.BOLD);
+        } else {
+            labelView.setTypeface(null, Typeface.NORMAL);
+        }
+
+        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.dropdown_item_divider_height);
+            height += dividerHeight;
+            divider.setHeight(dividerHeight);
+            if (mSeparators != null && mSeparators.contains(position)) {
+                divider.setColor(mContext.getResources().getColor(
+                                 R.color.dropdown_dark_divider_color));
+            } else {
+                divider.setColor(mContext.getResources().getColor(
+                                 R.color.dropdown_divider_color));
+            }
+        }
+        layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, height));
+
+        TextView sublabelView = (TextView) layout.findViewById(R.id.dropdown_sublabel);
+        CharSequence sublabel = item.getSublabel();
+        if (TextUtils.isEmpty(sublabel)) {
+            sublabelView.setVisibility(View.GONE);
+        } else {
+            sublabelView.setText(sublabel);
+            sublabelView.setVisibility(View.VISIBLE);
+        }
+
+        return layout;
+    }
+
+    @Override
+    public boolean areAllItemsEnabled() {
+        return mAreAllItemsEnabled;
+    }
+
+    @Override
+    public boolean isEnabled(int position) {
+        if (position < 0 || position >= getCount()) return false;
+        DropdownItem item = getItem(position);
+        return item.isEnabled() && !item.isGroupHeader();
+    }
+}