| // Backbone.BabySitter |
| // ------------------- |
| // v0.1.4 |
| // |
| // Copyright (c)2014 Derick Bailey, Muted Solutions, LLC. |
| // Distributed under MIT license |
| // |
| // http://github.com/marionettejs/backbone.babysitter |
| |
| (function(root, factory) { |
| |
| if (typeof define === 'function' && define.amd) { |
| define(['backbone', 'underscore'], function(Backbone, _) { |
| return factory(Backbone, _); |
| }); |
| } else if (typeof exports !== 'undefined') { |
| var Backbone = require('backbone'); |
| var _ = require('underscore'); |
| module.exports = factory(Backbone, _); |
| } else { |
| factory(root.Backbone, root._); |
| } |
| |
| }(this, function(Backbone, _) { |
| 'use strict'; |
| |
| var previousChildViewContainer = Backbone.ChildViewContainer; |
| |
| // BabySitter.ChildViewContainer |
| // ----------------------------- |
| // |
| // Provide a container to store, retrieve and |
| // shut down child views. |
| |
| Backbone.ChildViewContainer = (function (Backbone, _) { |
| |
| // Container Constructor |
| // --------------------- |
| |
| var Container = function(views){ |
| this._views = {}; |
| this._indexByModel = {}; |
| this._indexByCustom = {}; |
| this._updateLength(); |
| |
| _.each(views, this.add, this); |
| }; |
| |
| // Container Methods |
| // ----------------- |
| |
| _.extend(Container.prototype, { |
| |
| // Add a view to this container. Stores the view |
| // by `cid` and makes it searchable by the model |
| // cid (and model itself). Optionally specify |
| // a custom key to store an retrieve the view. |
| add: function(view, customIndex){ |
| var viewCid = view.cid; |
| |
| // store the view |
| this._views[viewCid] = view; |
| |
| // index it by model |
| if (view.model){ |
| this._indexByModel[view.model.cid] = viewCid; |
| } |
| |
| // index by custom |
| if (customIndex){ |
| this._indexByCustom[customIndex] = viewCid; |
| } |
| |
| this._updateLength(); |
| return this; |
| }, |
| |
| // Find a view by the model that was attached to |
| // it. Uses the model's `cid` to find it. |
| findByModel: function(model){ |
| return this.findByModelCid(model.cid); |
| }, |
| |
| // Find a view by the `cid` of the model that was attached to |
| // it. Uses the model's `cid` to find the view `cid` and |
| // retrieve the view using it. |
| findByModelCid: function(modelCid){ |
| var viewCid = this._indexByModel[modelCid]; |
| return this.findByCid(viewCid); |
| }, |
| |
| // Find a view by a custom indexer. |
| findByCustom: function(index){ |
| var viewCid = this._indexByCustom[index]; |
| return this.findByCid(viewCid); |
| }, |
| |
| // Find by index. This is not guaranteed to be a |
| // stable index. |
| findByIndex: function(index){ |
| return _.values(this._views)[index]; |
| }, |
| |
| // retrieve a view by its `cid` directly |
| findByCid: function(cid){ |
| return this._views[cid]; |
| }, |
| |
| // Remove a view |
| remove: function(view){ |
| var viewCid = view.cid; |
| |
| // delete model index |
| if (view.model){ |
| delete this._indexByModel[view.model.cid]; |
| } |
| |
| // delete custom index |
| _.any(this._indexByCustom, function(cid, key) { |
| if (cid === viewCid) { |
| delete this._indexByCustom[key]; |
| return true; |
| } |
| }, this); |
| |
| // remove the view from the container |
| delete this._views[viewCid]; |
| |
| // update the length |
| this._updateLength(); |
| return this; |
| }, |
| |
| // Call a method on every view in the container, |
| // passing parameters to the call method one at a |
| // time, like `function.call`. |
| call: function(method){ |
| this.apply(method, _.tail(arguments)); |
| }, |
| |
| // Apply a method on every view in the container, |
| // passing parameters to the call method one at a |
| // time, like `function.apply`. |
| apply: function(method, args){ |
| _.each(this._views, function(view){ |
| if (_.isFunction(view[method])){ |
| view[method].apply(view, args || []); |
| } |
| }); |
| }, |
| |
| // Update the `.length` attribute on this container |
| _updateLength: function(){ |
| this.length = _.size(this._views); |
| } |
| }); |
| |
| // Borrowing this code from Backbone.Collection: |
| // http://backbonejs.org/docs/backbone.html#section-106 |
| // |
| // Mix in methods from Underscore, for iteration, and other |
| // collection related features. |
| var methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter', |
| 'select', 'reject', 'every', 'all', 'some', 'any', 'include', |
| 'contains', 'invoke', 'toArray', 'first', 'initial', 'rest', |
| 'last', 'without', 'isEmpty', 'pluck']; |
| |
| _.each(methods, function(method) { |
| Container.prototype[method] = function() { |
| var views = _.values(this._views); |
| var args = [views].concat(_.toArray(arguments)); |
| return _[method].apply(_, args); |
| }; |
| }); |
| |
| // return the public API |
| return Container; |
| })(Backbone, _); |
| |
| |
| Backbone.ChildViewContainer.VERSION = '0.1.4'; |
| |
| Backbone.ChildViewContainer.noConflict = function () { |
| Backbone.ChildViewContainer = previousChildViewContainer; |
| return this; |
| }; |
| |
| return Backbone.ChildViewContainer; |
| |
| })); |