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/*
* Copyright:
* (C) 2006 by Derrell Lipman
* All rights reserved
*
* License:
* LGPL 2.1: http://creativecommons.org/licenses/LGPL/2.1/
*/
/**
* Swat statistics class finite state machine
*/
qx.OO.defineClass("swat.module.statistics.Fsm", swat.main.AbstractModuleFsm,
function()
{
swat.main.AbstractModuleFsm.call(this);
});
qx.Class._startTimer = function(fsm)
{
// First, for good house keeping, ensure no timer exists
swat.module.statistics.Fsm._stopTimer(fsm);
// Create a timer instance to expire in a few seconds
var timer = new qx.client.Timer(5000);
timer.addEventListener("interval", fsm.eventListener, fsm);
fsm.addObject("timer", timer);
timer.start();
};
qx.Class._stopTimer = function(fsm)
{
// ... then stop the timer. Get the timer object.
var timer = fsm.getObject("timer");
// If it still exists...
if (timer)
{
// ... then dispose of it.
timer.dispose();
fsm.removeObject("timer");
}
};
qx.Proto.buildFsm = function(module)
{
var fsm = module.fsm;
var _this = this;
var _module = module;
/*
* State: Idle
*
* Actions upon entry
* - if returning from RPC, display the result
* - start an interval timer to request statistics again in a while
*
* Transition on:
* "interval" on interval_timer
*/
var state = new qx.util.fsm.State(
"State_Idle",
{
"onentry" :
function(fsm, event)
{
// Did we just return from an RPC request?
if (fsm.getPreviousState() == "State_AwaitRpcResult")
{
// Yup. Display the result. We need to get the request object
var rpcRequest = _this.popRpcRequest();
// Display the result
var gui = swat.module.statistics.Gui.getInstance();
gui.displayData(module, rpcRequest.getUserData("result"));
// Dispose of the request
rpcRequest.request.dispose();
rpcRequest.request = null;
// Restart the timer.
if (_module.visible)
{
swat.module.statistics.Fsm._startTimer(fsm);
}
}
},
"onexit" :
function(fsm, event)
{
// If we're not coming right back into this state...
if (fsm.getNextState() != "State_Idle")
{
// ... then stop the timer.
swat.module.statistics.Fsm._stopTimer(fsm);
}
},
"events" :
{
// If the timer expires, send a new statistics request
"interval" :
{
"timer" :
"Transition_Idle_to_AwaitRpcResult_via_request_statistics"
},
// When we get an appear event, start our timer
"appear" :
{
"swat.main.canvas" :
"Transition_Idle_to_Idle_via_appear"
},
// When we get a disappear event, stop our timer
"disappear" :
{
"swat.main.canvas" :
"Transition_Idle_to_Idle_via_disappear"
}
}
});
// Replace the initial Idle state with this one
fsm.replaceState(state, true);
/*
* Transition: Idle to AwaitRpcResult
*
* Cause: "interval" on timer
*
* Action:
* Issue a Get Statistics request
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_AwaitRpcResult_via_request_statistics",
{
"nextState" :
"State_AwaitRpcResult",
"ontransition" :
function(fsm, event)
{
// Issue a Get Statistics call
_this.callRpc(fsm,
"samba.management",
"get_statistics",
[ true, true ]);
}
});
state.addTransition(trans);
/*
* Transition: Idle to Idle
*
* Cause: "appear" on canvas
*
* Action:
* Start our timer
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_Idle_via_appear",
{
"nextState" :
"State_Idle",
"ontransition" :
function(fsm, event)
{
_module.visible = true;
swat.module.statistics.Fsm._startTimer(fsm);
}
});
state.addTransition(trans);
/*
* Transition: Idle to Idle
*
* Cause: "disappear" on canvas
*
* Action:
* Stop our timer
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_Idle_via_disappear",
{
"nextState" :
"State_Idle",
"ontransition" :
function(fsm, event)
{
_module.visible = false;
swat.module.statistics.Fsm._stopTimer(fsm);
}
});
state.addTransition(trans);
// Add the AwaitRpcResult state and all of its transitions
this.addAwaitRpcResultState(module);
};
/**
* Singleton Instance Getter
*/
qx.Class.getInstance = qx.util.Return.returnInstance;
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