イベント周りの実装を頑張ったのに消したやつ。供養供養

gistfile1.js

createToggleButton: function (o) {
                var defaultOpt = {
                    enableStateBackgroundImage: undefined,
                    disableStateBackgroundImage: undefined,
                    value: false,
                    confirmDialogOption: undefined
                };
                for ( var key in defaultOpt )
                    o[key] = o[key] || defaultOpt[key];
                var self = {
                    init: function (o) {
                        this.option = o;
                        this.userCallbacks = {};
                        this.defaultCallbackes = {};
                        this.value = o.value;
                        this.button = Ti.UI.createButton({
                            backgroundImage: this.value ? o.enableStateBackgroundImage : o.disableStateBackgroundImage,
                            width: o.width,
                            height: o.height
                        });
                        this.button.addEventListener("singletap", function () {
                            if (self.confirmDialog) self.confirmDialog.show();
                            else self.fireEvent("change")
                        });
                        this._addEventListenerTo(this.defaultCallbackes, "change", function () { self.value = !self.value; });
                        this._addEventListenerTo(this.defaultCallbackes, "change", this._updateSurface);

                        if (o.confirmDialogOption) {
                            var value = o.value;
                            this.confirmDialog = Ti.UI.createAlertDialog(o.confirmDialogOption);
                            this.confirmDialog.addEventListener("click", function (e) {
                                if(e.index === e.source.buttonNames.length - 1 )
                                    self.fireEvent("change");
                            });
                        }
                        return this;
                    },
                    _addEventListenerTo: function (callbackKindObject, type, callback) {
                        if (!callbackKindObject[type])
                            callbackKindObject[type] = [];
                        callbackKindObject[type].push(callback);
                    },
                    addEventListener: function (type, callback) {
                        this._addEventListenerTo(this.userCallbacks, type, callback);
                    },
                    _fireEventFor: function (callbackKindObject, type, e) {
                        if (!callbackKindObject[type] ) return true;
                        var isPrevented = false;

                        e = e || {};
                        e.type = type;
                        e.source = this;
                        e.preventDefault = function () { isPrevented = true; }
                        var isSucceeded = callbackKindObject[type].every(function (callback) {
                            return false !== callback.call(self, e);
                        });
                        return !isPrevented && isSucceeded;
                    },
                    fireEvent: function (type, e) {
                        [this.userCallbacks, this.defaultCallbackes].every(function (callbackKindObject) {
                            return self._fireEventFor.call(self, callbackKindObject, type, e);
                        });
                    },
                    append: function (tiUIView) {
                        tiUIView.add(this.button);
                    },
                    _updateSurface: function () {
                        this.button.backgroundImage = this.value ? this.option.enableStateBackgroundImage : this.option.disableStateBackgroundImage;
                    }
                };
                return self.init(o);
            }