source: Dev/trunk/src/client/dojox/calc/FuncGen.js

define([
        "dojo/_base/declare",
        "dojo/_base/lang",
        "dojo/dom-style",
        "dijit/_WidgetBase",
        "dijit/_WidgetsInTemplateMixin",
        "dijit/_TemplatedMixin",
        "dojox/math/_base",
        "dijit/registry",
        "dojo/text!./templates/FuncGen.html",
        "dojox/calc/_Executor",
        "dijit/form/ComboBox", // template
        "dijit/form/SimpleTextarea", // template
        "dijit/form/Button", // template
        "dijit/form/TextBox" // template
], function(declare, lang, domStyle, WidgetBase, WidgetsInTemplateMixin, TemplatedMixin, math, registry, template, calc){

        var FuncGen = declare(
                "dojox.calc.FuncGen",
                [WidgetBase, TemplatedMixin, WidgetsInTemplateMixin],
        {
                // summary:
                //              The dialog layout for making functions

                templateString: template,

                onSelect: function(){
                        // summary:
                        //              if they select something in the name combobox, then change the body and arguments to correspond to the function they selected
                        this.reset();
                },
                onClear: function(){
                        // summary:
                        //              The clear button in the template calls this.
                        //              Clear the name, arguments, and body if the user says yes.
                        var answer = confirm("Do you want to clear the name, argument, and body text?");
                        if(answer){
                                this.clear();
                        }
                },
                saveFunction: function(name, args, body){
                        // override me
                },
                onSaved: function(){
                        // this on save needs to be overriden if you want Executor parsing support
                        //console.log("Save was pressed");
                },
                clear: function(){
                        // summary:
                        //              clear the name, arguments, and body
                        this.textarea.set("value", "");
                        this.args.set("value", "");
                        this.combo.set("value", "");
                },
                reset: function(){
                        // summary:
                        //              set the arguments and body to match a function selected if it exists in the function list
                        if(this.combo.get("value") in this.functions){
                                this.textarea.set("value", this.functions[this.combo.get("value")].body);
                                this.args.set("value", this.functions[this.combo.get("value")].args);
                        }
                },
                onReset: function(){
                        // summary:
                        //              (Reset button on click event) reset the arguments and body to their previously saved state if the user says yes

                        //console.log("Reset was pressed");
                        if(this.combo.get("value") in this.functions){
                                var answer = confirm("Do you want to reset this function?");
                                if(answer){
                                        this.reset();
                                        this.status.set("value", "The function has been reset to its last save point.");
                                }
                        }
                },
                deleteThing: function(item){
                        // summary:
                        //              delete an item in the writestore
                        if(this.writeStore.isItem(item)){
                                // delete it
                                //console.log("Found item "+item);
                                this.writeStore.deleteItem(item);
                                this.writeStore.save();
                        }else{
                                //console.log("Unable to locate the item");
                        }
                },
                deleteFunction: function(name){
                        // override me
                },
                onDelete: function(){
                        // summary:
                        //              (Delete button on click event) delete a function if the user clicks yes

                        //console.log("Delete was pressed");

                        var name;
                        if((name = this.combo.get("value")) in this.functions){
                                var answer = confirm("Do you want to delete this function?");
                                if(answer){
                                        var item = this.combo.item;

                                        //this.writeStore.fetchItemByIdentity({identity:name, onItem: this.deleteThing, onError:null});

                                        this.writeStore.deleteItem(item);
                                        this.writeStore.save();

                                        this.deleteFunction(name);
                                        delete this.functions[name];
                                        this.clear();
                                }
                        }else{
                                this.status.set("value", "Function cannot be deleted, it isn't saved.");
                        }
                },
                readyStatus: function(){
                        // summary:
                        //              set the status in the template to ready
                        this.status.set("value", "Ready");
                },
                writeStore:null, //the user can save functions to the writestore
                readStore:null, // users cannot edit the read store contents, but they can use them
                functions:null, // use the names to get to the function

                /*postCreate: function(){
                        this.functions = []; // use the names to get to the function
                        this.writeStore = new dojo.data.ItemFileWriteStore({data: {identifier: 'name', items:[]}});

                        this.combo.set("store", this.writeStore);
                },*/

                startup: function(){
                        // summary:
                        //              make sure the parent has a close button if it needs to be able to close
                        //              link the write store too
                        this.combo.set("store", this.writeStore);

                        this.inherited(arguments);// this is super class startup
                        // close is only valid if the parent is a widget with a close function
                        var parent = registry.getEnclosingWidget(this.domNode.parentNode);
                        if(parent && typeof parent.close == "function"){
                                this.closeButton.set("onClick", lang.hitch(parent, 'close'));
                        }else{
                                domStyle.set(this.closeButton.domNode, { display: "none" }); // hide the button
                        }
                }
        });

        return lang.mixin(calc, { FuncGen: FuncGen });
});