composite

#= require ./view
class Dtime.Backbone.CompositeView extends Dtime.Backbone.View
  leave: ->
    this.unbindFromAll()
    this.remove()
    this._leaveChildren()
    this._removeFromParent()

  renderChild: (view)->
    view.parent = this
    view.render()
    this.children ||= _([])
    this.children.push(view)

  appendChild: (view)->
    this.renderChild(view)
    $(@el).append(view.el)
    
  prependChild: (view)->
    this.renderChild(view)
    $(@el).prepend(view.el)

  renderChildInto: (view, container)->
    this.renderChild(view)
    $(container).empty().append(view.el)

  appendChildInto: (view, container)->
    this.renderChild(view)
    @$(container).append(view.el)

  prependChildInto: (view, container)->
    this.renderChild(view)
    @$(container).prepend(view.el)

  _leaveChildren: ->
    this.children?.chain().clone().each (view)->
      view.leave?()

  _removeFromParent: ()->
    @parent?._removeChild(this)

  _removeChild: (view)->
    index = this.children.indexOf(view)
    this.children.splice(index, 1)

observe

#= require ./view
class Dtime.Backbone.Observer 
  bindToModel: (event, callback) ->
    source = @model
    @bindTo(source, event, callback)

  bindTo: (source, event, callback) ->
    source.bind(event, callback, this)
    this.bindings = this.bindings || []
    this.bindings.push({ source: source, event: event, callback: callback })
  unbindFromAll: () ->
    _.each(this.bindings, (binding) ->
      binding.source.unbind(binding.event, binding.callback); 
    )
    this.bindings = []

_.extend(Dtime.Backbone.View::, Dtime.Backbone.Observer::)