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/*
* Copyright (C) 2010 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 android.server;
import android.os.ParcelUuid;
import android.util.Log;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
class BluetoothDeviceProperties {
private static final String TAG = "BluetoothDeviceProperties";
private final HashMap<String, Map<String, String>> mPropertiesMap;
private final BluetoothService mService;
BluetoothDeviceProperties(BluetoothService service) {
mPropertiesMap = new HashMap<String, Map<String, String>>();
mService = service;
}
synchronized Map<String, String> addProperties(String address,
String[] properties) {
/*
* We get a DeviceFound signal every time RSSI changes or name changes.
* Don't create a new Map object every time.
*/
Map<String, String> propertyValues = mPropertiesMap.get(address);
if (propertyValues == null) {
propertyValues = new HashMap<String, String>();
}
for (int i = 0; i < properties.length; i++) {
String name = properties[i];
String newValue = null;
int len;
if (name == null) {
Log.e(TAG, "Error: Remote Device Property at index "
+ i + " is null");
continue;
}
if (name.equals("UUIDs") || name.equals("Nodes")) {
StringBuilder str = new StringBuilder();
len = Integer.valueOf(properties[++i]);
for (int j = 0; j < len; j++) {
str.append(properties[++i]);
str.append(",");
}
if (len > 0) {
newValue = str.toString();
}
} else {
newValue = properties[++i];
}
propertyValues.put(name, newValue);
}
mPropertiesMap.put(address, propertyValues);
// We have added a new remote device or updated its properties.
// Also update the serviceChannel cache.
mService.updateDeviceServiceChannelCache(address);
return propertyValues;
}
synchronized void setProperty(String address, String name, String value) {
Map <String, String> propVal = mPropertiesMap.get(address);
if (propVal != null) {
propVal.put(name, value);
mPropertiesMap.put(address, propVal);
} else {
Log.e(TAG, "setRemoteDeviceProperty for a device not in cache:" + address);
}
}
synchronized boolean isInCache(String address) {
return (mPropertiesMap.get(address) != null);
}
synchronized boolean isEmpty() {
return mPropertiesMap.isEmpty();
}
synchronized Set<String> keySet() {
return mPropertiesMap.keySet();
}
synchronized String getProperty(String address, String property) {
Map<String, String> properties = mPropertiesMap.get(address);
if (properties != null) {
return properties.get(property);
} else {
// Query for remote device properties, again.
// We will need to reload the cache when we switch Bluetooth on / off
// or if we crash.
properties = updateCache(address);
if (properties != null) {
return properties.get(property);
}
}
Log.e(TAG, "getRemoteDeviceProperty: " + property + " not present: " + address);
return null;
}
synchronized Map<String, String> updateCache(String address) {
String[] propValues = mService.getRemoteDeviceProperties(address);
if (propValues != null) {
return addProperties(address, propValues);
}
return null;
}
}
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