kdf

KDView = require './../../core/view' KDListViewBox = require './listviewbox' module.exports = class KDListView extends KDView constructor: (options = {}, data) -> options.type or= "default" options.lastToFirst ?= no options.boxed ?= no options.itemsPerBox ?= 10 options.cssClass = if options.cssClass? then "kdlistview kdlistview-#{options.type} #{options.cssClass}" else "kdlistview kdlistview-#{options.type}" super options, data @items = [] @boxes = [] # if @getOptions().boxed # @on 'viewAppended', => # @parent.on 'scroll', @bound 'handleScroll' empty: -> item.destroy() for item, i in @items when item @items = [] keyDown: (event) -> KD.utils.stopDOMEvent event @emit "KeyDownOnList", event sanitizeIndex: (index) -> {lastToFirst} = @getOptions() {length} = @items if lastToFirst index ?= 0 sanitizedIndex = Math.max 0, length - index - 1 else index ?= length sanitizedIndex = Math.min length, index return sanitizedIndex addItemView: (itemInstance, index) -> index = @sanitizeIndex index @insertItemAtIndex itemInstance, index return itemInstance addItem: (itemData, index) -> index = @sanitizeIndex index {itemOptions, itemClass, itemChildClass, itemChildOptions} = @getOptions() itemClass ?= KDListItemView itemOptions ?= {} itemOptions = @customizeItemOptions?(itemOptions, itemData) or itemOptions itemOptions.delegate or= this itemOptions.childClass or= itemChildClass itemOptions.childOptions or= itemChildOptions itemInstance = new itemClass itemOptions, itemData @insertItemAtIndex itemInstance, index return itemInstance removeItem: (item) -> index = @items.indexOf item return no if index < 0 @emit 'ItemWasRemoved', item, index item.destroy() @items.splice index, 1 return yes destroy: -> item.destroy() for item in @items super insertItemAtIndex: (item, index) -> {boxed, lastToFirst} = @getOptions() endIndex = @items.length - 1 isLastIndex = index > endIndex isFirstIndex = index is 0 isInBetween = 0 < index <= endIndex if isFirstIndex then @items.unshift item else if isLastIndex then @items.push item else @items.splice index, 0, item @emit 'ItemWasAdded', item, index addNeighborItem = (item, index) => element = item.getElement() neighborIndex = if @items.length - 1 is index then index else index + 1 neighborItem = @items[neighborIndex].getElement() neighborItem.parentNode.insertBefore element, neighborItem item.emit 'viewAppended' if @parentIsInDom unless boxed if isFirstIndex then @addSubView item, null, yes else if isLastIndex then @addSubView item else addNeighborItem item, index else {itemsPerBox} = @getOptions() if @boxes.length is 0 box = @createBox() box.addSubView item else if isFirstIndex or isLastIndex box = null which = if isFirstIndex then 'first' else 'last' if @boxes[which].getItems().length >= itemsPerBox then box = @createBox isFirstIndex else box = @boxes[which] box.addSubView item, null, isFirstIndex else if isInBetween addNeighborItem item, index @scrollDown() if @doIHaveToScroll() packageItem: (itemInstance) -> {itemsPerBox} = @getOptions() newBox = => box = @createBox prepend box.addSubView itemInstance potentialBox = if prepend then @boxes.first else @boxes.last return newBox() unless potentialBox items = potentialBox.getItems() if items.length < itemsPerBox then potentialBox.addSubView itemInstance, null, lastToFirst else newBox() createBox: (prepend) -> box = new KDListViewBox if prepend then @boxes.unshift box else @boxes.push box @addSubView box, null, prepend box.on 'BoxIsEmptied', (id) => # TODO: use indexOf here index = null for _box, i in @boxes when _box.getId() is id index = i break @boxes.splice(index, 1)[0].destroy() if index? return box # handle vertical and horizontal scrolls separately - SY handleScroll:-> getItemIndex: (item) -> @items.indexOf item moveItemToIndex: (item, newIndex) -> currentIndex = @getItemIndex item if currentIndex < 0 warn "Item doesn't exists", item return @items newIndex = Math.max(0, Math.min(@items.length-1, newIndex)) if newIndex >= @items.length-1 targetItem = @items.last targetItem.$().after item.$() else diff = if newIndex > currentIndex then 1 else 0 targetItem = @items[newIndex+diff] targetItem.$().before item.$() @items.splice(currentIndex, 1) @items.splice(newIndex, 0, item) return @items scrollDown: -> clearTimeout @_scrollDownTimeout @_scrollDownTimeout = KD.utils.wait 50, => scrollView = @$().closest(".kdscrollview") slidingView = scrollView.find '> .kdview' slidingHeight = slidingView.height() scrollView.animate scrollTop : slidingHeight , duration : 200 queue : no doIHaveToScroll: -> if @getOptions().autoScroll scrollView = @$().closest(".kdscrollview")[0] if scrollView.length and scrollView.scrollHeight > scrollView.outerHeight() then yes else @isScrollAtBottom scrollView else no isScrollAtBottom: (scrollView) -> slidingView = scrollView.find('> .kdview')[0] scrollTop = scrollView.scrollTop slidingHeight = slidingView.clientHeight scrollViewheight = scrollView.clientHeight return slidingHeight - scrollViewheight is scrollTop