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January 15, 2012 22:02
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Jan 20, 2012 . 1 changed file with 0 additions and 2 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -91,5 +91,3 @@ define -> filtered = _.filter @collection.models, (item) -> config.predicate(item) filteredViews = (@getByModelId(item.cid) for item in filtered) config.complete filteredViews -
Jan 20, 2012 . 1 changed file with 35 additions and 30 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -2,11 +2,14 @@ define -> # The CollectionView class provides a simple view manager for a Backbone Collection. # It listens to changes on the collection and reflects that on the view. It also provides # view filtering, grouping and sorting capabilities. class CollectionView extends Backbone.View initialize: (options)-> throw "collection property must be specified." if not @collection @_ready = $.Deferred() @_pendingCount = 0 @_byModelId = {} @createView = options.createView @renderItemView = options.renderItemView or @defaultRenderItemView @@ -42,49 +45,51 @@ define -> @el.append view.el view.postRender?() renderItem:(model, customRender)-> view = @createView model @_byModelId[model.cid] = view (customRender or @renderItemView).call @, view render: (options) -> {defer} = options or { defer: true } @_pendingCount = @collection.length @collection.each (item) => fn = => @renderItem item @_pendingCount-- @_ready.resolve() if not @_ready.isResolved() and @_pendingCount is 0 if defer then (_.defer => fn()) else fn() remove:-> view.remove() for cid, view of @_byModelId #----------- Filtering, Grouping and Sorting -------------------# applyOperations:(config)-> config = _.extend { sortFn:(->true), groupFn:(->true), complete:(->) }, config @_ready.done => groups = _.groupBy @collection.models, config.groupFn for key, items of groups sortedItems = _.sortBy items, config.sortFn groups[key] = sortedItems # Collect the views groupedViews = {} for key, items of groups itemViews = (@getByModelId(item.cid) for item in items) groupedViews[key] = itemViews config.complete groupedViews filter:(config) -> config = _.extend { predicate:(->true), complete:(->) }, config @_ready.done => filtered = _.filter @collection.models, (item) -> config.predicate(item) filteredViews = (@getByModelId(item.cid) for item in filtered) config.complete filteredViews #--------------------- Sorting -------------------- -
Jan 15, 2012 .There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,90 @@ define -> # The CollectionView class provides a simple view manager for a Backbone Collection. # It listens to changes on the collection and reflects that on the view. It also provides # view filtering, grouping and sorting capabilities. class window.CollectionView extends Backbone.View initialize: (options)-> throw "collection property must be specified." if not @collection @_byModelId = {} @createView = options.createView @renderItemView = options.renderItemView or @defaultRenderItemView # listen to collection changes @collection.bind 'add', @addItem, @ @collection.bind 'remove', @removeItem, @ @collection.bind 'reset', @resetItems, @ addItem:(model)-> @renderItem(model) removeItem:(model)-> view = @_byModelId[model.cid] delete @_byModelId[model.cid] view?.remove() resetItems:(models)-> view.remove() for cid, view of @_byModelId @_byModelId = {} getByModelId:(modelId)-> return @_byModelId[modelId] views:-> (view for key, view of @_byModelId) hasItem:(item)-> !!@_byModelId[item.model.cid] defaultRenderItemView:(view)-> view.render() @el.append view.el view.postRender?() renderItem:(model)-> view = @createView model @_byModelId[model.cid] = view @renderItemView view render: (options) -> {defer} = options or { defer: true } @collection.each (item) => fn = => @renderItem item if defer then (_.defer => fn()) else fn() remove:-> view.remove() for cid, view of @_byModelId #----------- Filtering and Grouping -------------------# applyOperations:-> @applyFilter() group:(grouping)-> @_grouping = grouping or (->'all') @groupView = if not grouping then NoGroupView else @options.groupView @applyGrouping() applyGrouping:-> groups = @collection.groupBy(@_grouping) view.el.detach() for cid, view of @_byModelId @el.empty() for key, items of groups itemViews = _.map items, (item)=>@_byModelId[item.cid] grpView = new @groupView key:key, views:itemViews, parent:@el grpView.render() filter:(predicate) -> @_filter = predicate or (->true) @applyFilter() applyFilter:-> keepers = [] nokeepers = [] @collection.each (item)=> if @_filter(item) then keepers.push(item) else nokeepers.push(item) _.each nokeepers, (item) => @removeItem item _.each keepers, (item) => return if @hasItem(item) else @addItem(item)