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SequentialCallbackContext.java
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SequentialCallbackContext.java
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// (c) 2018 Tim Burke
//
// 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.megster.cordova.ble.central;
import android.bluetooth.BluetoothGatt;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.PluginResult;
import java.util.ArrayList;
import java.util.List;
public class SequentialCallbackContext {
private boolean subscribed;
private int sequence;
private final CallbackContext context;
public SequentialCallbackContext(CallbackContext context) {
this.context = context;
this.sequence = 0;
}
private int getNextSequenceNumber() {
synchronized(this) {
return this.sequence++;
}
}
private PluginResult createSequentialResult(byte[] data) {
List<PluginResult> resultList = new ArrayList<PluginResult>(2);
PluginResult dataResult = new PluginResult(PluginResult.Status.OK, data);
PluginResult sequenceResult = new PluginResult(PluginResult.Status.OK, this.getNextSequenceNumber());
resultList.add(dataResult);
resultList.add(sequenceResult);
return new PluginResult(PluginResult.Status.OK, resultList);
}
public void sendSequentialResult(byte[] data) {
PluginResult result = this.createSequentialResult(data);
result.setKeepCallback(true);
this.context.sendPluginResult(result);
}
public boolean completeSubscription(int status) {
if (subscribed) {
return true;
}
subscribed = true;
boolean success = status == BluetoothGatt.GATT_SUCCESS;
PluginResult result;
if (success) {
result = new PluginResult(PluginResult.Status.OK, "registered");
result.setKeepCallback(true);
} else {
result = new PluginResult(PluginResult.Status.ERROR, "Write descriptor failed: " + status);
}
this.context.sendPluginResult(result);
return success;
}
}