atom/src/pane-element.coffee at master · feicc/atom · GitHub

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path = require 'path'

{CompositeDisposable} = require 'event-kit'

class PaneElement extends HTMLElement

attached: false

createdCallback: ->

@attached = false

@subscriptions = new CompositeDisposable

@inlineDisplayStyles = new WeakMap

@initializeContent()

@subscribeToDOMEvents()

attachedCallback: ->

@attached = true

@focus() if @model.isFocused()

detachedCallback: ->

@attached = false

initializeContent: ->

@setAttribute 'class', 'pane'

@setAttribute 'tabindex', -1

@appendChild @itemViews = document.createElement('div')

@itemViews.setAttribute 'class', 'item-views'

subscribeToDOMEvents: ->

handleFocus = (event) =>

@model.focus() unless @isActivating or @model.isDestroyed() or @contains(event.relatedTarget)

if event.target is this and view = @getActiveView()

view.focus()

event.stopPropagation()

handleBlur = (event) =>

@model.blur() unless @contains(event.relatedTarget)

handleDragOver = (event) ->

event.preventDefault()

event.stopPropagation()

handleDrop = (event) =>

event.preventDefault()

event.stopPropagation()

@getModel().activate()

pathsToOpen = Array::map.call event.dataTransfer.files, (file) -> file.path

@applicationDelegate.open({pathsToOpen}) if pathsToOpen.length > 0

@addEventListener 'focus', handleFocus, true

@addEventListener 'blur', handleBlur, true

@addEventListener 'dragover', handleDragOver

@addEventListener 'drop', handleDrop

initialize: (@model, {@views, @applicationDelegate}) ->

throw new Error("Must pass a views parameter when initializing PaneElements") unless @views?

throw new Error("Must pass an applicationDelegate parameter when initializing PaneElements") unless @applicationDelegate?

@subscriptions.add @model.onDidActivate(@activated.bind(this))

@subscriptions.add @model.observeActive(@activeStatusChanged.bind(this))

@subscriptions.add @model.observeActiveItem(@activeItemChanged.bind(this))

@subscriptions.add @model.onDidRemoveItem(@itemRemoved.bind(this))

@subscriptions.add @model.onDidDestroy(@paneDestroyed.bind(this))

@subscriptions.add @model.observeFlexScale(@flexScaleChanged.bind(this))

this

getModel: -> @model

activated: ->

@isActivating = true

@focus() unless @hasFocus() # Don't steal focus from children.

@isActivating = false

activeStatusChanged: (active) ->

if active

@classList.add('active')

else

@classList.remove('active')

activeItemChanged: (item) ->

delete @dataset.activeItemName

delete @dataset.activeItemPath

return unless item?

hasFocus = @hasFocus()

itemView = @views.getView(item)

if itemPath = item.getPath?()

@dataset.activeItemName = path.basename(itemPath)

@dataset.activeItemPath = itemPath

unless @itemViews.contains(itemView)

@itemViews.appendChild(itemView)

for child in @itemViews.children

if child is itemView

@showItemView(child) if @attached

else

@hideItemView(child)

itemView.focus() if hasFocus

showItemView: (itemView) ->

inlineDisplayStyle = @inlineDisplayStyles.get(itemView)

if inlineDisplayStyle?

itemView.style.display = inlineDisplayStyle

else

itemView.style.display = ''

hideItemView: (itemView) ->

inlineDisplayStyle = itemView.style.display

unless inlineDisplayStyle is 'none'

@inlineDisplayStyles.set(itemView, inlineDisplayStyle) if inlineDisplayStyle?

itemView.style.display = 'none'

itemRemoved: ({item, index, destroyed}) ->

if viewToRemove = @views.getView(item)

viewToRemove.remove()

paneDestroyed: ->

@subscriptions.dispose()

flexScaleChanged: (flexScale) ->

@style.flexGrow = flexScale

getActiveView: -> @views.getView(@model.getActiveItem())

hasFocus: ->

this is document.activeElement or @contains(document.activeElement)

module.exports = PaneElement = document.registerElement 'atom-pane', prototype: PaneElement.prototype

atom/src/pane-element.coffee at master · feicc/atom · GitHub

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