ifbinvocationrequesthandler.java

来自「Sony Ericsson手机上的Facebook客户端全套代码」· Java 代码 · 共 142 行

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   IFbInvocationRequestHandler.java

package com.sonyericsson.fb.content;

import com.sonyericsson.fb.utils.Logger;
import java.io.IOException;
import java.util.Vector;
import javax.microedition.content.*;

// Referenced classes of package com.sonyericsson.fb.content:
//            IFbInvocationRequestListener

abstract class IFbInvocationRequestHandler
    implements RequestListener
{

    IFbInvocationRequestHandler()
    {
        _contentHandlerID = "";
        _handlerServer = null;
        _listeners = new Vector();
    }

    protected void init(String contentHandlerID)
    {
        _contentHandlerID = contentHandlerID;
        if(_handlerServer == null)
            try
            {
                Logger.println("Getting content handler server for ID: " + getContentHandlerID());
                _handlerServer = Registry.getServer(getContentHandlerID());
            }
            catch(Exception e)
            {
                Logger.printErrorln("Could not get a content handler server! " + getContentHandlerID());
            }
        if(_handlerServer != null)
            _handlerServer.setListener(this);
    }

    protected String getContentHandlerID()
    {
        return _contentHandlerID;
    }

    public void addListener(IFbInvocationRequestListener listener)
    {
        removeListener(listener);
        _listeners.addElement(listener);
    }

    public void removeListener(IFbInvocationRequestListener listener)
    {
        _listeners.removeElement(listener);
    }

    protected void notifyListeners(int type, String arguments[])
    {
        for(int i = 0; i < _listeners.size(); i++)
            ((IFbInvocationRequestListener)_listeners.elementAt(i)).invocationRecieved(type, arguments);

    }

    public boolean handlePendingRequests()
    {
        if(_handlerServer == null)
            return false;
        boolean handled = false;
        for(Invocation invocation = _handlerServer.getRequest(false); invocation != null; invocation = _handlerServer.getRequest(false))
        {
            String url = invocation.getURL();
            String action = invocation.getAction();
            String type = invocation.getType();
            String args[] = invocation.getArgs();
            String invoker = invocation.getInvokingAppName();
            try
            {
                String response[] = handleRequest(invoker, url, action, type, args);
                if(invocation.getResponseRequired() && response != null)
                    invocation.setArgs(response);
                else
                if(invocation.getResponseRequired())
                    invocation.setArgs(null);
            }
            catch(Exception e) { }
            _handlerServer.finish(invocation, 5);
            handled = true;
        }

        return handled;
    }

    public void invocationRequestNotify(ContentHandlerServer handler)
    {
        handlePendingRequests();
    }

    protected abstract String[] handleRequest(String s, String s1, String s2, String s3, String as[]);

    public abstract boolean sendMessage(int i);

    protected boolean invoke(Invocation invocation)
    {
        boolean invocationSucceded = false;
        try
        {
            Logger.println("Going to invoke: " + invocation.toString());
            Registry registry = Registry.getRegistry(getContentHandlerID());
            registry.invoke(invocation);
            invocationSucceded = true;
        }
        catch(IllegalArgumentException e)
        {
            Logger.printErrorln("The ID, type, URL, and action are all null, orthe content is accessed via the URL and the URL is invalid, orthe argument array contains any null references - " + e.toString());
        }
        catch(NullPointerException e)
        {
            Logger.printErrorln("the invocation is null - " + e.toString());
        }
        catch(ContentHandlerException e)
        {
            Logger.printErrorln("There is no registered content handler that matches the requested ID, type, URL, and action - " + e.toString());
        }
        catch(SecurityException e)
        {
            Logger.printErrorln("Access to the content is not permitted - " + e.toString());
        }
        catch(IOException e)
        {
            Logger.printErrorln("Access to the content has failed - " + e.toString());
        }
        return invocationSucceded;
    }

    protected String _contentHandlerID;
    protected ContentHandlerServer _handlerServer;
    private Vector _listeners;
}