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node_element = require './node_element'
NodeElement = node_element.NodeElement
util = require './util'
html_escape = util.html_escape
$ = jQuery
class ElementsRenderer
constructor: (tree_widget) ->
@tree_widget = tree_widget
@opened_icon_element = @createButtonElement(tree_widget.options.openedIcon)
@closed_icon_element = @createButtonElement(tree_widget.options.closedIcon)
render: (from_node) ->
if from_node and from_node.parent
@renderFromNode(from_node)
else
@renderFromRoot()
renderFromRoot: ->
$element = @tree_widget.element
$element.empty()
@createDomElements($element[0], @tree_widget.tree.children, true, true, 1)
renderFromNode: (node) ->
# remember current li
$previous_li = $(node.element)
# create element
li = @createLi(node, node.getLevel())
@attachNodeData(node, li)
# add element to dom
$previous_li.after(li)
# remove previous li
$previous_li.remove()
# create children
if node.children
@createDomElements(li, node.children, false, false, node.getLevel() + 1)
createDomElements: (element, children, is_root_node, is_open, level) ->
ul = @createUl(is_root_node)
element.appendChild(ul)
for child in children
li = @createLi(child, level)
ul.appendChild(li)
@attachNodeData(child, li)
if child.hasChildren()
@createDomElements(li, child.children, false, child.is_open, level + 1)
return null
attachNodeData: (node, li) ->
node.element = li
$(li).data('node', node)
createUl: (is_root_node) ->
if !is_root_node
class_string = ''
role = 'group'
else
class_string = 'jqtree-tree'
role = 'tree'
if @tree_widget.options.rtl
class_string += ' jqtree-rtl'
ul = document.createElement('ul')
ul.className = "jqtree_common #{ class_string }"
ul.setAttribute('role', role)
return ul
createLi: (node, level) ->
is_selected = @tree_widget.select_node_handler and @tree_widget.select_node_handler.isNodeSelected(node)
if node.isFolder()
li = @createFolderLi(node, level, is_selected)
else
li = @createNodeLi(node, level, is_selected)
if @tree_widget.options.onCreateLi
@tree_widget.options.onCreateLi(node, $(li))
return li
createFolderLi: (node, level, is_selected) ->
button_classes = @getButtonClasses(node)
folder_classes = @getFolderClasses(node, is_selected)
if node.is_open
icon_element = @opened_icon_element
else
icon_element = @closed_icon_element
# li
li = document.createElement('li')
li.className = "jqtree_common #{ folder_classes }"
li.setAttribute('role', 'presentation')
# div
div = document.createElement('div')
div.className = "jqtree-element jqtree_common"
div.setAttribute('role', 'presentation')
li.appendChild(div)
# button link
button_link = document.createElement('a')
button_link.className = button_classes
button_link.appendChild(
icon_element.cloneNode(false)
)
button_link.setAttribute('role', 'presentation')
button_link.setAttribute('aria-hidden', 'true')
if @tree_widget.options.buttonLeft
div.appendChild(button_link)
# title span
div.appendChild(
@createTitleSpan(node.name, level, is_selected, node.is_open, is_folder=true)
)
if not @tree_widget.options.buttonLeft
div.appendChild(button_link)
return li
createNodeLi: (node, level, is_selected) ->
li_classes = ['jqtree_common']
if is_selected
li_classes.push('jqtree-selected')
class_string = li_classes.join(' ')
# li
li = document.createElement('li')
li.className = class_string
li.setAttribute('role', 'presentation')
# div
div = document.createElement('div')
div.className = "jqtree-element jqtree_common"
div.setAttribute('role', 'presentation')
li.appendChild(div)
# title span
div.appendChild(
@createTitleSpan(node.name, level, is_selected, node.is_open, is_folder=false)
)
return li
createTitleSpan: (node_name, level, is_selected, is_open, is_folder) ->
title_span = document.createElement('span')
classes = "jqtree-title jqtree_common"
if is_folder
classes += " jqtree-title-folder"
title_span.className = classes
title_span.setAttribute('role', 'treeitem')
title_span.setAttribute('aria-level', level)
title_span.setAttribute('aria-selected', util.getBoolString(is_selected))
title_span.setAttribute('aria-expanded', util.getBoolString(is_open))
if is_selected
title_span.setAttribute('tabindex', 0)
title_span.innerHTML = @escapeIfNecessary(node_name)
return title_span
getButtonClasses: (node) ->
classes = ['jqtree-toggler', 'jqtree_common']
if not node.is_open
classes.push('jqtree-closed')
if @tree_widget.options.buttonLeft
classes.push('jqtree-toggler-left')
else
classes.push('jqtree-toggler-right')
return classes.join(' ')
getFolderClasses: (node, is_selected) ->
classes = ['jqtree-folder']
if not node.is_open
classes.push('jqtree-closed')
if is_selected
classes.push('jqtree-selected')
if node.is_loading
classes.push('jqtree-loading')
return classes.join(' ')
escapeIfNecessary: (value) ->
if @tree_widget.options.autoEscape
return html_escape(value)
else
return value
createButtonElement: (value) ->
if typeof value == 'string'
# convert value to html
div = document.createElement('div')
div.innerHTML = value
return document.createTextNode(div.innerHTML)
else
return $(value)[0]
module.exports = ElementsRenderer
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