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Diffstat (limited to 'webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/util/fsm/State.js')
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1 files changed, 0 insertions, 613 deletions
diff --git a/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/util/fsm/State.js b/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/util/fsm/State.js deleted file mode 100644 index fc054e304a..0000000000 --- a/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/util/fsm/State.js +++ /dev/null @@ -1,613 +0,0 @@ -/* ************************************************************************ - - qooxdoo - the new era of web development - - http://qooxdoo.org - - Copyright: - 2006 by Derrell Lipman - - License: - LGPL 2.1: http://www.gnu.org/licenses/lgpl.html - - Authors: - * Derrell Lipman (derrell) - -************************************************************************ */ - -/* ************************************************************************ - -#module(util_fsm) -#require(qx.util.fsm.FiniteStateMachine) - -************************************************************************ */ - -/** - * Create a new state which may be added to a finite state machine. - * - * *EXPERIMENTAL* - * The interface to the finite state machine, states, and transitions is - * experimental. It may change in non-backward-compatible ways as more - * experience is gained in its use. - * - * @param - * stateName - - * The name of this state. This is the name which may be referenced in - * objects of class qx.util.fsm.Transition, when passing of - * the the transition's predicate means transition to this state. - * - * @param - * stateInfo - - * An object containing any of the following properties: - * - * onentry - - * A function which is called upon entry to the state. Its signature is - * function(fsm, event) and it is saved in the onentry property of the - * state object. (This function is called after the Transition's action - * function and after the previous state's onexit function.) - * - * In the onentry function: - * - * fsm - - * The finite state machine object to which this state is attached. - * - * event - - * The event that caused the finite state machine to run - * - * onexit - - * A function which is called upon exit from the state. Its signature - * is function(fsm, event) and it is saved in the onexit property of the - * state object. (This function is called after the Transition's action - * function and before the next state's onentry function.) - * - * In the onexit function: - * - * fsm - - * The finite state machine object to which this state is attached. - * - * event - - * The event that caused the finite state machine to run - * - * autoActionsBeforeOnentry - - * autoActionsAfterOnentry - - * autoActionsBeforeOnexit - - * autoActionsAfterOnexit - - * Automatic actions which take place at the time specified by the - * property name. In all cases, the action takes place immediately - * before or after the specified function. - * - * The property value for each of these properties is an object which - * describes some number of functions to invoke on a set of specified - * objects (typically widgets). - * - * An example, using autoActionsBeforeOnentry, might look like this: - * - * "autoActionsBeforeOnentry" : - * { - * // The name of a function. - * "enabled" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ true ], - * - * // The function would be called on each object: - * // this.getObject("obj1").setEnabled(true); - * // this.getObject("obj2").setEnabled(true); - * "objects" : [ "obj1", "obj2" ], - * - * // And similarly for each object in each specified group. - * "groups" : [ "group1", "group2" ] - * } - * ], - * - * // The name of another function. - * "visible" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ false ], - * - * // The function would be called on each object and group, as - * // described above. - * "objects" : [ "obj3", "obj4" ], - * "groups" : [ "group3", "group4" ] - * } - * ] - * }; - * - * - * events (required) - - * A description to the finite state machine of how to handle a - * particular event, optionally associated with a specific target object - * on which the event was dispatched. This should be an object - * containing one property for each event which is either handled or - * blocked. The property name should be the event name. The property - * value should be one of: - * - * (a) qx.util.fsm.FiniteStateMachine.EventHandling.PREDICATE - * - * (b) qx.util.fsm.FiniteStateMachine.EventHandling.BLOCKED - * - * (c) a string containing the name of an explicit Transition to use - * - * (d) an object where each property name is the Friendly Name of an - * object (meaning that this rule applies if both the event and - * the event's target object's Friendly Name match), and its - * property value is one of (a), (b) or (c), above. - * - * This object is saved in the events property of the state object. - * - * Additional properties may be provided in stateInfo. They will not be - * used by the finite state machine, but will be available via - * this.getUserData("<propertyName>") during the state's onentry and - * onexit functions. - */ -qx.OO.defineClass("qx.util.fsm.State", qx.core.Object, -function(stateName, stateInfo) -{ - // Call our superclass' constructor - qx.core.Object.call(this, true); - - // Save the state name - this.setName(stateName); - - // Ensure they passed in an object - if (typeof(stateInfo) != "object") - { - throw new Error("State info must be an object"); - } - - // Save data from the stateInfo object - for (var field in stateInfo) - { - // If we find one of our properties, call its setter. - switch(field) - { - case "onentry": - this.setOnentry(stateInfo[field]); - break; - - case "onexit": - this.setOnexit(stateInfo[field]); - break; - - case "autoActionsBeforeOnentry": - this.setAutoActionsBeforeOnentry(stateInfo[field]); - break; - - case "autoActionsAfterOnentry": - this.setAutoActionsAfterOnentry(stateInfo[field]); - break; - - case "autoActionsBeforeOnexit": - this.setAutoActionsBeforeOnexit(stateInfo[field]); - break; - - case "autoActionsAfterOnexit": - this.setAutoActionsAfterOnexit(stateInfo[field]); - break; - - case "events": - this.setEvents(stateInfo[field]); - break; - - default: - // Anything else is user-provided data for their own use. Save it. - this.setUserData(field, stateInfo[field]); - - // Log it in case it was a typo and they intended a built-in field - this.debug("State " + stateName + ": " + - "Adding user-provided field to state: " + field); - - break; - } - } - - - // Check for required but missing properties - if (! this.getEvents()) - { - throw new Error("The events object must be provided in new state info"); - } - - - // Initialize the transition list - this.transitions = { }; -}); - - - - -/* ---------------------------------------------------------------------------- - PROPERTIES ---------------------------------------------------------------------------- -*/ - -/** - * The name of this state. This name may be used as a Transition's nextState - * value, or an explicit next state in the 'events' handling list in a State. - */ -qx.OO.addProperty( - { - name : "name", - type : "string" - }); - -/** - * The onentry function for this state. This is documented in the - * constructor, and is typically provided through the constructor's stateInfo - * object, but it is also possible (but highly NOT recommended) to change this - * dynamically. - */ -qx.OO.addProperty( - { - name : "onentry", - defaultValue : function(fsm, event) { } - }); - -/** - * The onexit function for this state. This is documented in the constructor, - * and is typically provided through the constructor's stateInfo object, but - * it is also possible (but highly NOT recommended) to change this - * dynamically. - */ -qx.OO.addProperty( - { - name : "onexit", - defaultValue : function(fsm, event) { } - }); - -/** - * Automatic actions to take prior to calling the state's onentry function. - * - * The value passed to setAutoActionsBeforeOnentry() should like something - * akin to: - * - * "autoActionsBeforeOnentry" : - * { - * // The name of a function. This would become "setEnabled(" - * "enabled" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ true ], - * - * // The function would be called on each object: - * // this.getObject("obj1").setEnabled(true); - * // this.getObject("obj2").setEnabled(true); - * "objects" : [ "obj1", "obj2" ] - * - * // And similarly for each object in each specified group. - * "groups" : [ "group1", "group2" ], - * } - * ]; - * }; - */ -qx.OO.addProperty( - { - name : "autoActionsBeforeOnentry", - defaultValue : function(fsm, event) { } - }); - -/** - * Automatic actions to take after return from the state's onentry function. - * - * The value passed to setAutoActionsAfterOnentry() should like something akin - * to: - * - * "autoActionsAfterOnentry" : - * { - * // The name of a function. This would become "setEnabled(" - * "enabled" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ true ], - * - * // The function would be called on each object: - * // this.getObject("obj1").setEnabled(true); - * // this.getObject("obj2").setEnabled(true); - * "objects" : [ "obj1", "obj2" ] - * - * // And similarly for each object in each specified group. - * "groups" : [ "group1", "group2" ], - * } - * ]; - * }; - */ -qx.OO.addProperty( - { - name : "autoActionsAfterOnentry", - defaultValue : function(fsm, event) { } - }); - -/** - * Automatic actions to take prior to calling the state's onexit function. - * - * The value passed to setAutoActionsBeforeOnexit() should like something akin - * to: - * - * "autoActionsBeforeOnexit" : - * { - * // The name of a function. This would become "setEnabled(" - * "enabled" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ true ], - * - * // The function would be called on each object: - * // this.getObject("obj1").setEnabled(true); - * // this.getObject("obj2").setEnabled(true); - * "objects" : [ "obj1", "obj2" ] - * - * // And similarly for each object in each specified group. - * "groups" : [ "group1", "group2" ], - * } - * ]; - * }; - */ -qx.OO.addProperty( - { - name : "autoActionsBeforeOnexit", - defaultValue : function(fsm, event) { } - }); - - -/** - * Automatic actions to take after returning from the state's onexit function. - * - * The value passed to setAutoActionsAfterOnexit() should like something akin - * to: - * - * "autoActionsBeforeOnexit" : - * { - * // The name of a function. This would become "setEnabled(" - * "enabled" : - * [ - * { - * // The parameter value, thus "setEnabled(true);" - * "parameters" : [ true ], - * - * // The function would be called on each object: - * // this.getObject("obj1").setEnabled(true); - * // this.getObject("obj2").setEnabled(true); - * "objects" : [ "obj1", "obj2" ] - * - * // And similarly for each object in each specified group. - * "groups" : [ "group1", "group2" ], - * } - * ]; - * }; - */ -qx.OO.addProperty( - { - name : "autoActionsAfterOnexit", - defaultValue : function(fsm, event) { } - }); - - -/** - * The object representing handled and blocked events for this state. This is - * documented in the constructor, and is typically provided through the - * constructor's stateInfo object, but it is also possible (but highly NOT - * recommended) to change this dynamically. - */ -qx.OO.addProperty( - { - name : "events" - }); - - - -/* ---------------------------------------------------------------------------- - MODIFIER ---------------------------------------------------------------------------- -*/ - -qx.Proto._checkName = function(propValue, propData) -{ - // Ensure that we got a valid state name - if (typeof(propValue) != "string" || propValue.length < 1) - { - throw new Error("Invalid state name"); - } - - return propValue; -}; - -qx.Proto._checkOnentry = function(propValue, propData) -{ - // Validate the onentry function - switch(typeof(propValue)) - { - case "undefined": - // None provided. Convert it to a null function - return function(fsm, event) {}; - - case "function": - // We're cool. No changes required - return propValue; - - default: - throw new Error("Invalid onentry type: " + typeof(propValue)); - return null; - } -}; - -qx.Proto._checkOnexit = function(propValue, propData) -{ - // Validate the onexit function - switch(typeof(propValue)) - { - case "undefined": - // None provided. Convert it to a null function - return function(fsm, event) {}; - - case "function": - // We're cool. No changes required - return propValue; - - default: - throw new Error("Invalid onexit type: " + typeof(propValue)); - return null; - } -}; - -qx.Proto._checkEvents = function(propValue, propData) -{ - // Validate that events is an object - if (typeof(propValue) != "object") - { - throw new Error("events must be an object"); - } - - // Confirm that each property is a valid value - // The property value should be one of: - // - // (a) qx.util.fsm.FiniteStateMachine.EventHandling.PREDICATE - // - // (b) qx.util.fsm.FiniteStateMachine.EventHandling.BLOCKED - // - // (c) a string containing the name of an explicit Transition to use - // - // (d) an object where each property name is the Friendly Name of an - // object (meaning that this rule applies if both the event and - // the event's target object's Friendly Name match), and its - // property value is one of (a), (b) or (c), above. - for (var e in propValue) - { - var action = propValue[e]; - if (typeof(action) == "number" && - action != qx.util.fsm.FiniteStateMachine.EventHandling.PREDICATE && - action != qx.util.fsm.FiniteStateMachine.EventHandling.BLOCKED) - { - throw new Error("Invalid numeric value in events object: " + - e + ": " + action); - } - else if (typeof(action) == "object") - { - for (action_e in action) - { - if (typeof(action[action_e]) == "number" && - action != qx.util.fsm.FiniteStateMachine.EventHandling.PREDICATE && - action != qx.util.fsm.FiniteStateMachine.EventHandling.BLOCKED) - { - throw new Error("Invalid numeric value in events object " + - "(" + e + "): " + - action_e + ": " + action[action_e]); - } - else if (typeof(action[action_e]) != "string") - { - throw new Error("Invalid value in events object " + - "(" + e + "): " + - action_e + ": " + action[action_e]); - } - } - } - else if (typeof(action) != "string") - { - throw new Error("Invalid value in events object: " + - e + ": " + propValue[e]); - } - } - - // We're cool. No changes required. - return propValue; -}; - -qx.Proto._checkAutoActionsBeforeOnentry = function(propValue, propData) -{ - return qx.util.fsm.FiniteStateMachine._commonCheckAutoActions( - "autoActionsBeforeOnentry", - propValue, - propData); -}; - -qx.Proto._checkAutoActionsAfterOnentry = function(propValue, propData) -{ - return qx.util.fsm.FiniteStateMachine._commonCheckAutoActions( - "autoActionsAfterOnentry", - propValue, - propData); -}; - -qx.Proto._checkAutoActionsBeforeOnexit = function(propValue, propData) -{ - return qx.util.fsm.FiniteStateMachine._commonCheckAutoActions( - "autoActionsBeforeOnexit", - propValue, - propData); -}; - -qx.Proto._checkAutoActionsAfterOnexit = function(propValue, propData) -{ - return qx.util.fsm.FiniteStateMachine._commonCheckAutoActions( - "autoActionsAfterOnexit", - propValue, - propData); -}; - - -/* ---------------------------------------------------------------------------- - UTILITIES ---------------------------------------------------------------------------- -*/ - -/** - * Add a transition to a state - * - * @param trans {qx.util.fsm.Transition} - * An object of class qx.util.fsm.Transition representing a - * transition which is to be a part of this state. - */ -qx.Proto.addTransition = function(trans) -{ - // Ensure that we got valid transition info - if (! trans instanceof qx.util.fsm.Transition) - { - throw new Error("Invalid transition: not an instance of " + - "qx.util.fsm.Transition"); - } - - // Add the new transition object to the state - this.transitions[trans.getName()] = trans; -}; - - - - -/* ---------------------------------------------------------------------------- - EVENT LISTENERS ---------------------------------------------------------------------------- -*/ - - - -/* ---------------------------------------------------------------------------- - CLASS CONSTANTS ---------------------------------------------------------------------------- -*/ - - - -/* ---------------------------------------------------------------------------- - DISPOSER ---------------------------------------------------------------------------- -*/ - -qx.Proto.dispose = function() -{ - if (this.getDisposed()) { - return true; - } - - return qx.core.Object.prototype.dispose.call(this); -} |