Implemented RadioButtonPreference

Change-Id: I047b6a95f3001b60e7500f85c25d507e1ca1ad0f

res/layout/preference_widget_radiobutton.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2006 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.
+-->
+
+<!-- Layout used by CheckBoxPreference for the checkbox style. This is inflated
+     inside android.R.layout.preference. -->
+<RadioButton xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+android:id/checkbox"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    android:focusable="false"
+    android:clickable="false" />

res/xml/location_settings.xml

@@ -27,14 +27,14 @@
             android:key="location_sources"
             android:title="@string/location_sources_heading" />
 
-        <CheckBoxPreference
+        <com.android.settings.location.RadioButtonPreference
             android:key="location_gps"
             android:title="@string/location_gps"
             android:summary="@string/location_street_level"
             android:dependency="location_toggle"
             android:persistent="false" />
 
-        <com.android.settings.location.WrappingCheckBoxPreference
+        <com.android.settings.location.RadioButtonPreference
             android:key="location_network"
             android:title="@string/location_network_based"
             android:summary="@string/location_neighborhood_level"

src/com/android/settings/location/LocationSettings.java

@@ -40,7 +40,7 @@ import java.util.Observable;
 import java.util.Observer;
 
 /**
- * Gesture lock pattern settings.
+ * Location access settings.
  */
 public class LocationSettings extends SettingsPreferenceFragment
         implements Preference.OnPreferenceChangeListener {
@@ -236,25 +236,3 @@ class WrappingSwitchPreference extends SwitchPreference {
         }
     }
 }
-
-class WrappingCheckBoxPreference extends CheckBoxPreference {
-
-    public WrappingCheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-    }
-
-    public WrappingCheckBoxPreference(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    @Override
-    protected void onBindView(View view) {
-        super.onBindView(view);
-
-        TextView title = (TextView) view.findViewById(android.R.id.title);
-        if (title != null) {
-            title.setSingleLine(false);
-            title.setMaxLines(3);
-        }
-    }
-}

src/com/android/settings/location/RadioButtonPreference.java

@@ -0,0 +1,63 @@
+/*
+ * 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.location;
+
+import android.content.Context;
+import android.preference.CheckBoxPreference;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.android.settings.R;
+
+/**
+ * Check box preference with check box replaced by radio button.
+ *
+ * Functionally speaking, it's actually a CheckBoxPreference. We only modified
+ * the widget to RadioButton to make it "look like" a RadioButtonPreference.
+ *
+ * In other words, there's no "RadioButtonPreferenceGroup" in this
+ * implementation. When you check one RadioButtonPreference, if you want to
+ * uncheck all the other preferences, you should do that by code yourself.
+ */
+public class RadioButtonPreference extends CheckBoxPreference {
+    public RadioButtonPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        setWidgetLayoutResource(R.layout.preference_widget_radiobutton);
+    }
+
+    public RadioButtonPreference(Context context, AttributeSet attrs) {
+        this(context, attrs, com.android.internal.R.attr.checkBoxPreferenceStyle);
+    }
+
+    public RadioButtonPreference(Context context) {
+        this(context, null);
+    }
+
+    @Override
+    protected void onBindView(View view) {
+        super.onBindView(view);
+
+        TextView title = (TextView) view.findViewById(android.R.id.title);
+        if (title != null) {
+            title.setSingleLine(false);
+            title.setMaxLines(3);
+        }
+    }
+}