NFC payment settings.

First version, pending final UX.

Change-Id: I357e900c3f2012b35814ae197c49a8c9b97b7148

src/com/android/settings/nfc/PaymentSettings.java

@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.nfc;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.RadioButton;
+
+import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
+import com.android.settings.nfc.PaymentBackend.PaymentAppInfo;
+
+import java.util.List;
+
+public class PaymentSettings extends SettingsPreferenceFragment implements
+        OnClickListener {
+    public static final String TAG = "PaymentSettings";
+    private PaymentBackend mPaymentBackend;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+
+        setHasOptionsMenu(false);
+        mPaymentBackend = new PaymentBackend(getActivity());
+    }
+
+    public void refresh() {
+        PreferenceManager manager = getPreferenceManager();
+        PreferenceScreen screen = manager.createPreferenceScreen(getActivity());
+
+        boolean isAuto = mPaymentBackend.isAutoPaymentMode();
+
+        // Get all payment services
+        List<PaymentAppInfo> appInfos = mPaymentBackend.getPaymentAppInfos();
+        if (appInfos != null && appInfos.size() > 0) {
+            // Add all payment apps
+            for (PaymentAppInfo appInfo : appInfos) {
+                PaymentAppPreference preference =
+                        new PaymentAppPreference(getActivity(), appInfo, this);
+                // If for some reason isAuto gets out of sync, clear out app default
+                appInfo.isDefault &= isAuto;
+                preference.setIcon(appInfo.icon);
+                preference.setTitle(appInfo.caption);
+                screen.addPreference(preference);
+            }
+            if (appInfos.size() > 1) {
+                PaymentAppInfo appInfo = new PaymentAppInfo();
+                appInfo.icon = null;
+                appInfo.componentName = null;
+                appInfo.isDefault = !isAuto;
+                // Add "Ask every time" option
+                PaymentAppPreference preference =
+                        new PaymentAppPreference(getActivity(), appInfo, this);
+                preference.setIcon(null);
+                preference.setTitle(R.string.nfc_payment_ask);
+                screen.addPreference(preference);
+            }
+        }
+        setPreferenceScreen(screen);
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (v.getTag() instanceof PaymentAppInfo) {
+            PaymentAppInfo appInfo = (PaymentAppInfo) v.getTag();
+            if (appInfo.componentName != null) {
+                mPaymentBackend.setDefaultPaymentApp(appInfo.componentName);
+                mPaymentBackend.setAutoPaymentMode(true);
+            } else {
+                mPaymentBackend.setDefaultPaymentApp(null);
+                mPaymentBackend.setAutoPaymentMode(false);
+            }
+            refresh();
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        refresh();
+    }
+
+    public static class PaymentAppPreference extends Preference {
+        private final OnClickListener listener;
+        private final PaymentAppInfo appInfo;
+
+        public PaymentAppPreference(Context context, PaymentAppInfo appInfo,
+                OnClickListener listener) {
+            super(context);
+            setLayoutResource(R.layout.nfc_payment_option);
+            this.appInfo = appInfo;
+            this.listener = listener;
+        }
+
+        @Override
+        protected void onBindView(View view) {
+            super.onBindView(view);
+
+            view.setOnClickListener(listener);
+            view.setTag(appInfo);
+
+            RadioButton radioButton = (RadioButton) view.findViewById(android.R.id.button1);
+            radioButton.setChecked(appInfo.isDefault);
+        }
+    }
+}