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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 LDB Browser class finite state machine
*/
qx.OO.defineClass("swat.module.ldbbrowse.Fsm", swat.module.AbstractModuleFsm,
function()
{
swat.module.AbstractModuleFsm.call(this);
});
qx.Proto.buildFsm = function(module)
{
var fsm = module.fsm;
var _this = this;
/*
* State: Idle
*
* Actions upon entry
* - if returning from RPC, display the result
*
* Transition on:
* "execute" on find button
* "treeopenwhileempty" on tree
* "changeselection" on tree
*/
var state = new qx.util.fsm.State(
"State_Idle",
{
"onentry" :
function(fsm, state)
{
// 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.ldbbrowse.Gui.getInstance();
gui.displayData(module, rpcRequest);
// Dispose of the request
rpcRequest.request.dispose();
rpcRequest.request = null;
}
},
"events" :
{
// If the find button is activated, issue a find request
"execute" :
{
"find" :
"Transition_Idle_to_AwaitRpcResult_via_find"
},
// If a previously unexpanded tree node is expanded, issue a request
// to retrieve its contents.
"treeOpenWhileEmpty":
{
"tree" :
"Transition_Idle_to_AwaitRpcResult_via_tree_open"
},
// If the selection changes, issue a request to retrieve contents to
// populate the attribute/value table.
"changeSelection":
{
"tree:manager" :
"Transition_Idle_to_AwaitRpcResult_via_tree_selection_changed",
"dbName":
"Transition_Idle_to_AwaitRpcResult_via_db_changed"
}
}
});
// Replace the initial Idle state with this one
fsm.replaceState(state, true);
/*
* Transition: Idle to AwaitRpcResult
*
* Cause: "execute" on find button
*
* Action:
* Issue a search request
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_AwaitRpcResult_via_find",
{
"nextState" :
"State_AwaitRpcResult",
"ontransition" :
function(fsm, event)
{
// Get our module descriptor
var module = fsm.getObject("swat.module.module");
// Retrieve the database handle
var dbHandle = module.dbHandle;
// Retrieve the search expression
var searchExpr = fsm.getObject("searchExpr").getValue();
// Retrieve the base DN
var baseDN = fsm.getObject("baseDN").getValue();
// Retrieve the selected scope
var scope = fsm.getObject("scope").getSelected().getValue();
// We want all attributes
var attributes = [ "*" ];
// Issue a Search call
var request = _this.callRpc(fsm,
"samba.ldb",
"search",
[
dbHandle,
searchExpr,
baseDN,
scope,
attributes
]);
// When we get the result, we'll need to know what type of request
// we made.
request.setUserData("requestType", "find");
}
});
state.addTransition(trans);
/*
* Transition: Idle to AwaitRpcResult
*
* Cause: "treeOpenWhileEmpty" on tree
*
* Action:
* Issue a search request
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_AwaitRpcResult_via_tree_open",
{
"nextState" :
"State_AwaitRpcResult",
"ontransition" :
function(fsm, event)
{
var parent = event.getData();
var hierarchy = parent.getHierarchy(new Array());
parent.debug("Requesting children...");
// Strip off the root node
hierarchy.shift();
// Get the tree object
var tree = fsm.getObject("tree");
// Determine the children. Differs depending on root or otherwise
var attributes;
var scope;
var baseDN;
// If parent is the root...
if (parent == tree)
{
// ... then we want the defaultNamingContext, ...
attributes = [ "defaultNamingContext" ];
// ... and we want only base scope
scope = "base";
// ... and an empty base DN
baseDN = "";
}
else
{
// otherwise, retrieve the DN,
attributes = [ "dn" ];
// ... and we want one level of scope
scope = "one";
// ... and base DN is the parent
baseDN = hierarchy.reverse().join(",");
}
// Build the search expression
var searchExpr = "(objectclass=*)";
// Get our module descriptor
var module = fsm.getObject("swat.module.module");
// Retrieve the database handle
var dbHandle = module.dbHandle;
// Issue a Get Statistics call
var request = _this.callRpc(fsm,
"samba.ldb",
"search",
[
dbHandle,
searchExpr,
baseDN,
scope,
attributes
]);
// When we get the result, we'll need to know what type of request
// we made.
request.setUserData("requestType", "tree_open");
// We'll also need some of our parameters
request.setUserData("parent", parent);
request.setUserData("attributes", attributes);
}
});
state.addTransition(trans);
/*
* Transition: Idle to AwaitRpcResult
*
* Cause: "changeSelection" on tree
*
* Action:
* Issue a search request
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_AwaitRpcResult_via_tree_selection_changed",
{
"nextState" :
"State_AwaitRpcResult",
"predicate" :
function(fsm, event)
{
var element = event.getData()[0];
var hierarchy = element.getHierarchy(new Array());
// Strip off the root node
hierarchy.shift();
// Get the tree object
var tree = fsm.getObject("tree");
// If element is the root...
if (element == tree)
{
// ... then just clear out the attribute/value table.
var tableModel = fsm.getObject("tableModel:browse");
tableModel.setData([]);
return null; // don't search additional transitionis
}
return true;
},
"ontransition" :
function(fsm, event)
{
var element = event.getData()[0];
var hierarchy = element.getHierarchy(new Array());
// Strip off the root node
hierarchy.shift();
// Get the tree object
var tree = fsm.getObject("tree");
// Determine the children. Differs depending on root or otherwise
var attributes;
var scope;
var baseDN;
// We want all attributes
attributes = [ "*" ];
// We want the attributes only for the current element
scope = "base";
// Base DN is the current element
baseDN = hierarchy.reverse().join(",");
// Build the search expression
var searchExpr = "(objectclass=*)";
// Get our module descriptor
var module = fsm.getObject("swat.module.module");
// Retrieve the database handle
var dbHandle = module.dbHandle;
// Issue a Get Statistics call
var request = _this.callRpc(fsm,
"samba.ldb",
"search",
[
dbHandle,
searchExpr,
baseDN,
scope,
attributes
]);
// When we get the result, we'll need to know what type of request
// we made.
request.setUserData("requestType", "tree_selection_changed");
}
});
state.addTransition(trans);
/*
* Transition: Idle to AwaitRpcResult
*
* Cause: "changeSelection" on dbName
*
* Action:
* Issue a connect request
*/
var trans = new qx.util.fsm.Transition(
"Transition_Idle_to_AwaitRpcResult_via_db_changed",
{
"nextState" :
"State_AwaitRpcResult",
"ontransition" :
function(fsm, event)
{
// Obtain the name of the database to be connected to
var dbName = fsm.getObject("dbName").getValue();
// Issue a Get Statistics call
var request = _this.callRpc(fsm,
"samba.ldb",
"connect",
[ dbName ]);
// When we get the result, we'll need to know what type of request
// we made.
request.setUserData("requestType", "database_name_changed");
}
});
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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