Show Ash like <select> popup on Android tablets

content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java

Index: content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java b/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java
new file mode 100644
index 0000000000000000000000000000000000000000..97458f3099a5a625756eab22a49d69e48b70a2fb
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java
@@ -0,0 +1,74 @@
+// Copyright 2014 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.content.browser.input;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.view.View;
+import android.widget.AdapterView;
+
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content.browser.RenderCoordinates;
+import org.chromium.ui.DropdownAdapter;
+import org.chromium.ui.DropdownItem;
+import org.chromium.ui.DropdownPopupWindow;
+
+import java.util.List;
+
+/**
+ * Handles the dropdown popup for the <select> HTML tag support.
+ */
+public class SelectPopupDropdown implements SelectPopup {
+
+    private final ContentViewCore mContentViewCore;
+    private final Context mContext;
+
+    private DropdownPopupWindow mDropdownPopupWindow;
+    private int mInitialSelection = -1;
+
+    public SelectPopupDropdown(ContentViewCore contentViewCore, List<SelectPopupItem> items,
+            Rect bounds, int[] selected) {
+        mContentViewCore = contentViewCore;
+        mContext = mContentViewCore.getContext();
+        mDropdownPopupWindow = new DropdownPopupWindow(mContext,
+                mContentViewCore.getViewAndroidDelegate());
+        mDropdownPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                int[] selectedIndices = {position};
+                mContentViewCore.selectPopupMenuItems(selectedIndices);
+                hide();
+            }
+        });
+        if (selected.length > 0) {
+            mInitialSelection = selected[0];
+        }
+        DropdownItem[] dropdownItems = items.toArray(new DropdownItem[items.size()]);
+        mDropdownPopupWindow.setAdapter(new DropdownAdapter(mContext, dropdownItems, null));
+        RenderCoordinates renderCoordinates = mContentViewCore.getRenderCoordinates();
+        float anchorX = renderCoordinates.fromPixToDip(
+                renderCoordinates.fromLocalCssToPix(bounds.left));
+        float anchorY = renderCoordinates.fromPixToDip(
+                renderCoordinates.fromLocalCssToPix(bounds.top));
+        float anchorWidth = renderCoordinates.fromPixToDip(
+                renderCoordinates.fromLocalCssToPix(bounds.right)) - anchorX;
+        float anchorHeight = renderCoordinates.fromPixToDip(
+                renderCoordinates.fromLocalCssToPix(bounds.bottom)) - anchorY;
+        mDropdownPopupWindow.setAnchorRect(anchorX, anchorY, anchorWidth, anchorHeight);
+    }
+
+    @Override
+    public void show() {
+        mDropdownPopupWindow.show();
+        if (mInitialSelection >= 0) {
+            mDropdownPopupWindow.getListView().setSelection(mInitialSelection);
+        }
+    }
+
+    @Override
+    public void hide() {
+        mDropdownPopupWindow.dismiss();
+    }
+}