Blanket copy of PhoneApp to services/Telephony.

First phase of splitting out InCallUI from PhoneApp.

Change-Id: I237341c4ff00e96c677caa4580b251ef3432931b
diff --git a/src/com/android/phone/Use2GOnlyCheckBoxPreference.java b/src/com/android/phone/Use2GOnlyCheckBoxPreference.java
new file mode 100644
index 0000000..a5a7a67
--- /dev/null
+++ b/src/com/android/phone/Use2GOnlyCheckBoxPreference.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2009 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.phone;
+
+import android.content.Context;
+import android.os.AsyncResult;
+import android.os.Handler;
+import android.os.Message;
+import android.os.SystemProperties;
+import android.preference.CheckBoxPreference;
+import android.util.AttributeSet;
+import android.util.Log;
+
+import com.android.internal.telephony.Phone;
+
+public class Use2GOnlyCheckBoxPreference extends CheckBoxPreference {
+    private static final String LOG_TAG = "Use2GOnlyCheckBoxPreference";
+
+    private Phone mPhone;
+    private MyHandler mHandler;
+
+    public Use2GOnlyCheckBoxPreference(Context context) {
+        this(context, null);
+    }
+
+    public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs) {
+        this(context, attrs,com.android.internal.R.attr.checkBoxPreferenceStyle);
+    }
+
+    public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        mPhone = PhoneGlobals.getPhone();
+        mHandler = new MyHandler();
+        mPhone.getPreferredNetworkType(
+                mHandler.obtainMessage(MyHandler.MESSAGE_GET_PREFERRED_NETWORK_TYPE));
+    }
+
+    private int getDefaultNetworkMode() {
+        int mode = SystemProperties.getInt("ro.telephony.default_network",
+                Phone.PREFERRED_NT_MODE);
+        Log.i(LOG_TAG, "getDefaultNetworkMode: mode=" + mode);
+        return mode;
+    }
+
+    @Override
+    protected void  onClick() {
+        super.onClick();
+
+        int networkType = isChecked() ? Phone.NT_MODE_GSM_ONLY : getDefaultNetworkMode();
+        Log.i(LOG_TAG, "set preferred network type="+networkType);
+        android.provider.Settings.Global.putInt(mPhone.getContext().getContentResolver(),
+                android.provider.Settings.Global.PREFERRED_NETWORK_MODE, networkType);
+        mPhone.setPreferredNetworkType(networkType, mHandler
+                .obtainMessage(MyHandler.MESSAGE_SET_PREFERRED_NETWORK_TYPE));
+   }
+
+    private class MyHandler extends Handler {
+
+        static final int MESSAGE_GET_PREFERRED_NETWORK_TYPE = 0;
+        static final int MESSAGE_SET_PREFERRED_NETWORK_TYPE = 1;
+
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MESSAGE_GET_PREFERRED_NETWORK_TYPE:
+                    handleGetPreferredNetworkTypeResponse(msg);
+                    break;
+
+                case MESSAGE_SET_PREFERRED_NETWORK_TYPE:
+                    handleSetPreferredNetworkTypeResponse(msg);
+                    break;
+            }
+        }
+
+        private void handleGetPreferredNetworkTypeResponse(Message msg) {
+            AsyncResult ar = (AsyncResult) msg.obj;
+
+            if (ar.exception == null) {
+                int type = ((int[])ar.result)[0];
+                if (type != Phone.NT_MODE_GSM_ONLY) {
+                    // Back to default
+                    type = getDefaultNetworkMode();
+                }
+                Log.i(LOG_TAG, "get preferred network type="+type);
+                setChecked(type == Phone.NT_MODE_GSM_ONLY);
+                android.provider.Settings.Global.putInt(mPhone.getContext().getContentResolver(),
+                        android.provider.Settings.Global.PREFERRED_NETWORK_MODE, type);
+            } else {
+                // Weird state, disable the setting
+                Log.i(LOG_TAG, "get preferred network type, exception="+ar.exception);
+                setEnabled(false);
+            }
+        }
+
+        private void handleSetPreferredNetworkTypeResponse(Message msg) {
+            AsyncResult ar = (AsyncResult) msg.obj;
+
+            if (ar.exception != null) {
+                // Yikes, error, disable the setting
+                setEnabled(false);
+                // Set UI to current state
+                Log.i(LOG_TAG, "set preferred network type, exception=" + ar.exception);
+                mPhone.getPreferredNetworkType(obtainMessage(MESSAGE_GET_PREFERRED_NETWORK_TYPE));
+            } else {
+                Log.i(LOG_TAG, "set preferred network type done");
+            }
+        }
+    }
+}