Use dropdown list for admin areas in pr form.

chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java

 // Copyright 2016 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.chrome.browser.payments.ui;
 
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemSelectedListener;
 import android.widget.ArrayAdapter;
 import android.widget.Spinner;
 import android.widget.TextView;
 
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.payments.ui.PaymentRequestUI.PaymentRequestObserverForTest;
 import org.chromium.chrome.browser.preferences.autofill.AutofillProfileBridge.DropdownKeyValue;
 import org.chromium.ui.UiUtils;
 
 import java.util.ArrayList;
 import java.util.List;
 
+import javax.annotation.Nullable;
+
 /**
  * Helper class for creating a dropdown view with a label.
  */
 class EditorDropdownField implements EditorFieldView {
     private final EditorFieldModel mFieldModel;
     private final View mLayout;
     private final TextView mLabel;
     private final Spinner mDropdown;
     private int mSelectedIndex;
+    @Nullable
+    private PaymentRequestObserverForTest mObserverForTest;
 
     /**
      * Builds a dropdown view.
      *
      * @param context         The application context to use when creating widgets.
      * @param root            The object that provides a set of LayoutParams values for the view.
      * @param fieldModel      The data model of the dropdown.
      * @param changedCallback The callback to invoke after user's dropdwn item selection has been
      *                        processed.
      */
     public EditorDropdownField(Context context, ViewGroup root, final EditorFieldModel fieldModel,
-            final Runnable changedCallback) {
+            final Runnable changedCallback, @Nullable PaymentRequestObserverForTest observer) {
         assert fieldModel.getInputTypeHint() == EditorFieldModel.INPUT_TYPE_HINT_DROPDOWN;
         mFieldModel = fieldModel;
+        mObserverForTest = observer;
 
         mLayout = LayoutInflater.from(context).inflate(
                 R.layout.payment_request_editor_dropdown, root, false);
 
         mLabel = (TextView) mLayout.findViewById(R.id.spinner_label);
         mLabel.setText(mFieldModel.isRequired()
                 ? mFieldModel.getLabel() + EditorView.REQUIRED_FIELD_INDICATOR
                 : mFieldModel.getLabel());
 
         final List<DropdownKeyValue> dropdownKeyValues = mFieldModel.getDropdownKeyValues();
@@ skipping 30 matching lines @@
         mDropdown.setSelection(mSelectedIndex);
         mDropdown.setOnItemSelectedListener(new OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 if (mSelectedIndex != position) {
                     mSelectedIndex = position;
                     mFieldModel.setDropdownKey(
                             mFieldModel.getDropdownKeyValues().get(position).getKey(),
                             changedCallback);
                 }
+                if (mObserverForTest != null) {
+                    mObserverForTest.onPaymentRequestEditorTextUpdate();
+                }
             }
 
             @Override
             public void onNothingSelected(AdapterView<?> parent) {}
         });
         mDropdown.setOnTouchListener(new View.OnTouchListener() {
             @SuppressLint("ClickableViewAccessibility")
             @Override
             public boolean onTouch(View v, MotionEvent event) {
                 if (event.getAction() == MotionEvent.ACTION_DOWN) requestFocusAndHideKeyboard();
@@ skipping 71 matching lines @@
     }
 
     private static int getDropdownIndex(
             List<DropdownKeyValue> dropdownKeyValues, CharSequence value) {
         for (int i = 0; i < dropdownKeyValues.size(); i++) {
             if (dropdownKeyValues.get(i).getKey().equals(value)) return i;
         }
         return 0;
     }
 }