define([
    'dojo/_base/declare',
    'dojo/_base/event',
    'dojo/_base/lang',
    'dojo/when',
    '../store',
    '../app/Content',
    '../app/Router',
    '../app/Page',
    '../model/classes/Question',
    '../model/widgets/QuestionEditorPreview',
    '../model/widgets/QuestionEditorToolkit',
    'dojo/text!./templates/question.html'
],function(declare, event, lang, when, store, Content, Router, Page, Question, QuestionEditorPreview, QuestionEditorToolkit, template){
    return declare([Page], {
        templateString: template,
        question: null,
        _toolkit: null,
        _preview: null,
        
        startup: function() {
            if ( this._started ) { return; }
            this.inherited(arguments);
            if ( !this.questionId ) {
                throw new Error("Error: no reference to object set!");
            }
            this._setupEditor();
            if (this.questionId === "new") {
                this.question = Question.create();
                this._refresh();
            } else {
                when(store.get(this.questionId))
                .then(lang.hitch(this, function(obj) {
                    this.question = obj;
                    this._refresh();
                }));
            }
        },
        onLeave: function() {
            this.inherited(arguments);
        },
        _refresh: function () {
            this.titleNode.innerHTML = Question.DisplayTitle.get(this.question);
            this._toolkit.set('value',this.question);
            this._preview.appendItems(Question.Content.get(this.question));
        },
        _onSave: function(evt) {
            lang.mixin(this.question, this._toolkit.get('value'));
            Question.Content.set(this.question, this._preview.getItems());
            store.put(this.question)
            .then(function() {
                Router.go('/questions');
            },function(err){
                Content.notify(err,'error');
            });
            if ( evt ) { event.stop( evt ); }
            return false;
        },
        _onDiscard: function() {
            Router.go('/questions');
            return true;
        },
        _setupEditor: function() {
            this._toolkit = new QuestionEditorToolkit({
            },this.QuestionEditorToolkitNode);
            this._toolkit.on('submit',lang.hitch(this,"_onSave"));
            this._toolkit.startup();

            this._preview = new QuestionEditorPreview({ 
            },this.QuestionEditorPreviewNode);
            this._preview.startup();
            this._supportingWidgets.push(this._toolkit, this._preview);
        }
    });
});