tapicall.java

tapi的java封装

/*
*	JTAPI library copyright 1998 by Web4Groups consortium (http://Web4Groups.at)
*/

import  java.telephony.capabilities.CallCapabilities;
import java.telephony.*;
import java.telephony.events.*;
import java.util.*;
 

class TAPICall implements Call{

	Vector observers;
	int state;
	KapschProvider provider;
	ArrayVector tapiConnections;



	TAPICall(KapschProvider provider){
		observers = new Vector();
		this.provider = provider;
		tapiConnections = new ArrayVector();
		state = Call.IDLE;
	}




	/* implementation specific */
	void addConnection(Connection connection) {	//needed for incoming calls
		if (connection != null)
			tapiConnections.addElement(connection);
	}


	/* implementation specific */
	void removeConnection(Connection connection) {
		if (connection != null)
			tapiConnections.removeElement(connection);
	}

		

	public synchronized void addObserver(CallObserver observer){
		if(observer!=null)
			observers.addElement(observer);
	}



	public synchronized CallObserver[] getObservers(){
		CallObserver data[]=null;
		int s=observers.size();
		data=new CallObserver[s];
		int i;
		for(i=0;i<s;i++)
			data[i]=(CallObserver)observers.elementAt(i);
		return data;
	}



	public synchronized void removeObserver(CallObserver observer){
		if(observer!=null)
			observers.removeElement(observer);
	}



	public Connection[] connect(Terminal origterm, Address origaddr, String dialedDigits) throws InvalidStateException {
		
		int s = provider.getState();
		if (s != Provider.IN_SERVICE)
			throw new InvalidStateException(provider, InvalidStateException.PROVIDER_OBJECT, s);
		if (state != IDLE)
			throw new InvalidStateException(this, InvalidStateException.CALL_OBJECT, state);
		state = ACTIVE;
		TAPIConnection[] tc = new TAPIConnection[2];
		addConnection(tc[0]);
		addConnection(tc[1]);
		return tc;
	}



	public Connection[] getConnections() throws InvalidStateException {

		int s = provider.getState();
		if (s != Provider.IN_SERVICE)
			throw new InvalidStateException(provider, InvalidStateException.PROVIDER_OBJECT, s);
		Connection ret[] = null;
		Object obj[] = tapiConnections.getArray();
		if(obj != null){
			ret = new Connection[obj.length];
			System.arraycopy(obj, 0, ret, 0, obj.length);
		}
		return ret;
	}



	public CallCapabilities getCallCapabilities(Terminal terminal, Address address){
		return new TAPICallCapabilities();
	}



	public Provider getProvider(){
		return provider;
	}



	public int getState(){
		return state;
	}

}