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$ = jQuery
$.fn.extend({
chosen: (options) ->
# Do no harm and return as soon as possible for unsupported browsers, namely IE6 and IE7
# Continue on if running IE document type but in compatibility mode
return this unless AbstractChosen.browser_is_supported()
this.each (input_field) ->
$this = $ this
chosen = $this.data('chosen')
if options is 'destroy'
if chosen instanceof Chosen
chosen.destroy()
return
unless chosen instanceof Chosen
$this.data('chosen', new Chosen(this, options))
return
})
class Chosen extends AbstractChosen
setup: ->
@form_field_jq = $ @form_field
@current_selectedIndex = @form_field.selectedIndex
set_up_html: ->
container_classes = ["chosen-container"]
container_classes.push "chosen-container-" + (if @is_multiple then "multi" else "single")
container_classes.push @form_field.className if @inherit_select_classes && @form_field.className
container_classes.push "chosen-rtl" if @is_rtl
container_props =
'class': container_classes.join ' '
'title': @form_field.title
container_props.id = @form_field.id.replace(/[^\w]/g, '_') + "_chosen" if @form_field.id.length
@container = ($ "<div />", container_props)
# CSP without 'unsafe-inline' doesn't allow setting the style attribute directly
@container.width this.container_width()
if @is_multiple
@container.html this.get_multi_html()
else
@container.html this.get_single_html()
@form_field_jq.hide().after @container
@dropdown = @container.find('div.chosen-drop').first()
@search_field = @container.find('input').first()
@search_results = @container.find('ul.chosen-results').first()
this.search_field_scale()
@search_no_results = @container.find('li.no-results').first()
if @is_multiple
@search_choices = @container.find('ul.chosen-choices').first()
@search_container = @container.find('li.search-field').first()
else
@search_container = @container.find('div.chosen-search').first()
@selected_item = @container.find('.chosen-single').first()
this.results_build()
this.set_tab_index()
this.set_label_behavior()
on_ready: ->
@form_field_jq.trigger("chosen:ready", {chosen: this})
register_observers: ->
@container.on 'touchstart.chosen', (evt) => this.container_mousedown(evt); return
@container.on 'touchend.chosen', (evt) => this.container_mouseup(evt); return
@container.on 'mousedown.chosen', (evt) => this.container_mousedown(evt); return
@container.on 'mouseup.chosen', (evt) => this.container_mouseup(evt); return
@container.on 'mouseenter.chosen', (evt) => this.mouse_enter(evt); return
@container.on 'mouseleave.chosen', (evt) => this.mouse_leave(evt); return
@search_results.on 'mouseup.chosen', (evt) => this.search_results_mouseup(evt); return
@search_results.on 'mouseover.chosen', (evt) => this.search_results_mouseover(evt); return
@search_results.on 'mouseout.chosen', (evt) => this.search_results_mouseout(evt); return
@search_results.on 'mousewheel.chosen DOMMouseScroll.chosen', (evt) => this.search_results_mousewheel(evt); return
@search_results.on 'touchstart.chosen', (evt) => this.search_results_touchstart(evt); return
@search_results.on 'touchmove.chosen', (evt) => this.search_results_touchmove(evt); return
@search_results.on 'touchend.chosen', (evt) => this.search_results_touchend(evt); return
@form_field_jq.on "chosen:updated.chosen", (evt) => this.results_update_field(evt); return
@form_field_jq.on "chosen:activate.chosen", (evt) => this.activate_field(evt); return
@form_field_jq.on "chosen:open.chosen", (evt) => this.container_mousedown(evt); return
@form_field_jq.on "chosen:close.chosen", (evt) => this.close_field(evt); return
@search_field.on 'blur.chosen', (evt) => this.input_blur(evt); return
@search_field.on 'keyup.chosen', (evt) => this.keyup_checker(evt); return
@search_field.on 'keydown.chosen', (evt) => this.keydown_checker(evt); return
@search_field.on 'focus.chosen', (evt) => this.input_focus(evt); return
@search_field.on 'cut.chosen', (evt) => this.clipboard_event_checker(evt); return
@search_field.on 'paste.chosen', (evt) => this.clipboard_event_checker(evt); return
if @is_multiple
@search_choices.on 'click.chosen', (evt) => this.choices_click(evt); return
else
@container.on 'click.chosen', (evt) -> evt.preventDefault(); return # gobble click of anchor
destroy: ->
$(@container[0].ownerDocument).off 'click.chosen', @click_test_action
@form_field_label.off 'click.chosen' if @form_field_label.length > 0
if @search_field[0].tabIndex
@form_field_jq[0].tabIndex = @search_field[0].tabIndex
@container.remove()
@form_field_jq.removeData('chosen')
@form_field_jq.show()
search_field_disabled: ->
@is_disabled = @form_field.disabled || @form_field_jq.parents('fieldset').is(':disabled')
@container.toggleClass 'chosen-disabled', @is_disabled
@search_field[0].disabled = @is_disabled
unless @is_multiple
@selected_item.off 'focus.chosen', this.activate_field
if @is_disabled
this.close_field()
else unless @is_multiple
@selected_item.on 'focus.chosen', this.activate_field
container_mousedown: (evt) ->
return if @is_disabled
if evt and evt.type in ['mousedown', 'touchstart'] and not @results_showing
evt.preventDefault()
if not (evt? and ($ evt.target).hasClass "search-choice-close")
if not @active_field
@search_field.val "" if @is_multiple
$(@container[0].ownerDocument).on 'click.chosen', @click_test_action
this.results_show()
else if not @is_multiple and evt and (($(evt.target)[0] == @selected_item[0]) || $(evt.target).parents("a.chosen-single").length)
evt.preventDefault()
this.results_toggle()
this.activate_field()
container_mouseup: (evt) ->
this.results_reset(evt) if evt.target.nodeName is "ABBR" and not @is_disabled
search_results_mousewheel: (evt) ->
delta = evt.originalEvent.deltaY or -evt.originalEvent.wheelDelta or evt.originalEvent.detail if evt.originalEvent
if delta?
evt.preventDefault()
delta = delta * 40 if evt.type is 'DOMMouseScroll'
@search_results.scrollTop(delta + @search_results.scrollTop())
blur_test: (evt) ->
this.close_field() if not @active_field and @container.hasClass "chosen-container-active"
close_field: ->
$(@container[0].ownerDocument).off "click.chosen", @click_test_action
@active_field = false
this.results_hide()
@container.removeClass "chosen-container-active"
this.clear_backstroke()
this.show_search_field_default()
this.search_field_scale()
@search_field.blur()
activate_field: ->
return if @is_disabled
@container.addClass "chosen-container-active"
@active_field = true
@search_field.val(@search_field.val())
@search_field.focus()
test_active_click: (evt) ->
active_container = $(evt.target).closest('.chosen-container')
if active_container.length and @container[0] == active_container[0]
@active_field = true
else
this.close_field()
results_build: ->
@parsing = true
@selected_option_count = null
@results_data = SelectParser.select_to_array @form_field
if @is_multiple
@search_choices.find("li.search-choice").remove()
else
this.single_set_selected_text()
if @disable_search or @form_field.options.length <= @disable_search_threshold
@search_field[0].readOnly = true
@container.addClass "chosen-container-single-nosearch"
else
@search_field[0].readOnly = false
@container.removeClass "chosen-container-single-nosearch"
this.update_results_content this.results_option_build({first:true})
this.search_field_disabled()
this.show_search_field_default()
this.search_field_scale()
@parsing = false
result_do_highlight: (el) ->
if el.length
this.result_clear_highlight()
@result_highlight = el
@result_highlight.addClass "highlighted"
maxHeight = parseInt @search_results.css("maxHeight"), 10
visible_top = @search_results.scrollTop()
visible_bottom = maxHeight + visible_top
high_top = @result_highlight.position().top + @search_results.scrollTop()
high_bottom = high_top + @result_highlight.outerHeight()
if high_bottom >= visible_bottom
@search_results.scrollTop if (high_bottom - maxHeight) > 0 then (high_bottom - maxHeight) else 0
else if high_top < visible_top
@search_results.scrollTop high_top
result_clear_highlight: ->
@result_highlight.removeClass "highlighted" if @result_highlight
@result_highlight = null
results_show: ->
if @is_multiple and @max_selected_options <= this.choices_count()
@form_field_jq.trigger("chosen:maxselected", {chosen: this})
return false
unless @is_multiple
@search_container.append @search_field
@container.addClass "chosen-with-drop"
@results_showing = true
@search_field.focus()
@search_field.val this.get_search_field_value()
this.winnow_results()
@form_field_jq.trigger("chosen:showing_dropdown", {chosen: this})
update_results_content: (content) ->
@search_results.html content
results_hide: ->
if @results_showing
this.result_clear_highlight()
unless @is_multiple
@selected_item.prepend @search_field
@search_field.focus()
@container.removeClass "chosen-with-drop"
@form_field_jq.trigger("chosen:hiding_dropdown", {chosen: this})
@results_showing = false
set_tab_index: (el) ->
if @form_field.tabIndex
ti = @form_field.tabIndex
@form_field.tabIndex = -1
@search_field[0].tabIndex = ti
set_label_behavior: ->
@form_field_label = @form_field_jq.parents("label") # first check for a parent label
if not @form_field_label.length and @form_field.id.length
@form_field_label = $("label[for='#{@form_field.id}']") #next check for a for=#{id}
if @form_field_label.length > 0
@form_field_label.on 'click.chosen', this.label_click_handler
show_search_field_default: ->
if @is_multiple and this.choices_count() < 1 and not @active_field
@search_field.val(@default_text)
@search_field.addClass "default"
else
@search_field.val("")
@search_field.removeClass "default"
search_results_mouseup: (evt) ->
target = if $(evt.target).hasClass "active-result" then $(evt.target) else $(evt.target).parents(".active-result").first()
if target.length
@result_highlight = target
this.result_select(evt)
@search_field.focus()
search_results_mouseover: (evt) ->
target = if $(evt.target).hasClass "active-result" then $(evt.target) else $(evt.target).parents(".active-result").first()
this.result_do_highlight( target ) if target
search_results_mouseout: (evt) ->
this.result_clear_highlight() if $(evt.target).hasClass("active-result") or $(evt.target).parents('.active-result').first()
choice_build: (item) ->
choice = $('<li />', { class: "search-choice" }).html("<span>#{this.choice_label(item)}</span>")
if item.disabled
choice.addClass 'search-choice-disabled'
else
close_link = $('<a />', { class: 'search-choice-close', 'data-option-array-index': item.array_index })
close_link.on 'click.chosen', (evt) => this.choice_destroy_link_click(evt)
choice.append close_link
@search_container.before choice
choice_destroy_link_click: (evt) ->
evt.preventDefault()
evt.stopPropagation()
this.choice_destroy $(evt.target) unless @is_disabled
choice_destroy: (link) ->
if this.result_deselect( link[0].getAttribute("data-option-array-index") )
if @active_field
@search_field.focus()
else
this.show_search_field_default()
this.results_hide() if @is_multiple and this.choices_count() > 0 and this.get_search_field_value().length < 1
link.parents('li').first().remove()
this.search_field_scale()
results_reset: ->
this.reset_single_select_options()
@form_field.options[0].selected = true
this.single_set_selected_text()
this.show_search_field_default()
this.results_reset_cleanup()
this.trigger_form_field_change()
this.results_hide() if @active_field
results_reset_cleanup: ->
@current_selectedIndex = @form_field.selectedIndex
@selected_item.find("abbr").remove()
result_select: (evt) ->
if @result_highlight
high = @result_highlight
this.result_clear_highlight()
if @is_multiple and @max_selected_options <= this.choices_count()
@form_field_jq.trigger("chosen:maxselected", {chosen: this})
return false
if @is_multiple
high.removeClass("active-result")
else
this.reset_single_select_options()
high.addClass("result-selected")
item = @results_data[ high[0].getAttribute("data-option-array-index") ]
item.selected = true
@form_field.options[item.options_index].selected = true
@selected_option_count = null
@search_field.val("")
if @is_multiple
this.choice_build item
else
this.single_set_selected_text(this.choice_label(item))
if @is_multiple && (!@hide_results_on_select || (evt.metaKey or evt.ctrlKey))
this.winnow_results()
else
this.results_hide()
this.show_search_field_default()
this.trigger_form_field_change selected: @form_field.options[item.options_index].value if @is_multiple || @form_field.selectedIndex != @current_selectedIndex
@current_selectedIndex = @form_field.selectedIndex
evt.preventDefault()
this.search_field_scale()
single_set_selected_text: (text=@default_text) ->
if text is @default_text
@selected_item.addClass("chosen-default")
else
this.single_deselect_control_build()
@selected_item.removeClass("chosen-default")
@selected_item.find("span").html(text)
result_deselect: (pos) ->
result_data = @results_data[pos]
if not @form_field.options[result_data.options_index].disabled
result_data.selected = false
@form_field.options[result_data.options_index].selected = false
@selected_option_count = null
this.result_clear_highlight()
this.winnow_results() if @results_showing
this.trigger_form_field_change deselected: @form_field.options[result_data.options_index].value
this.search_field_scale()
return true
else
return false
single_deselect_control_build: ->
return unless @allow_single_deselect
@selected_item.find("span").first().after "<abbr class=\"search-choice-close\"></abbr>" unless @selected_item.find("abbr").length
@selected_item.addClass("chosen-single-with-deselect")
get_search_field_value: ->
@search_field.val()
get_search_text: ->
$.trim this.get_search_field_value()
escape_html: (text) ->
$('<div/>').text(text).html()
winnow_results_set_highlight: ->
selected_results = if not @is_multiple then @search_results.find(".result-selected.active-result") else []
do_high = if selected_results.length then selected_results.first() else @search_results.find(".active-result").first()
this.result_do_highlight do_high if do_high?
no_results: (terms) ->
no_results_html = this.get_no_results_html(terms)
@search_results.append no_results_html
@form_field_jq.trigger("chosen:no_results", {chosen:this})
no_results_clear: ->
@search_results.find(".no-results").remove()
keydown_arrow: ->
if @results_showing and @result_highlight
next_sib = @result_highlight.nextAll("li.active-result").first()
this.result_do_highlight next_sib if next_sib
else
this.results_show()
keyup_arrow: ->
if not @results_showing and not @is_multiple
this.results_show()
else if @result_highlight
prev_sibs = @result_highlight.prevAll("li.active-result")
if prev_sibs.length
this.result_do_highlight prev_sibs.first()
else
this.results_hide() if this.choices_count() > 0
this.result_clear_highlight()
keydown_backstroke: ->
if @pending_backstroke
this.choice_destroy @pending_backstroke.find("a").first()
this.clear_backstroke()
else
next_available_destroy = @search_container.siblings("li.search-choice").last()
if next_available_destroy.length and not next_available_destroy.hasClass("search-choice-disabled")
@pending_backstroke = next_available_destroy
if @single_backstroke_delete
@keydown_backstroke()
else
@pending_backstroke.addClass "search-choice-focus"
clear_backstroke: ->
@pending_backstroke.removeClass "search-choice-focus" if @pending_backstroke
@pending_backstroke = null
search_field_scale: ->
return unless @is_multiple
style_block =
position: 'absolute'
left: '-1000px'
top: '-1000px'
display: 'none'
whiteSpace: 'pre'
styles = ['fontSize', 'fontStyle', 'fontWeight', 'fontFamily', 'lineHeight', 'textTransform', 'letterSpacing']
for style in styles
style_block[style] = @search_field.css(style)
div = $('<div />').css(style_block)
div.text this.get_search_field_value()
$('body').append div
width = div.width() + 25
div.remove()
if @container.is(':visible')
width = Math.min(@container.outerWidth() - 10, width)
@search_field.width(width)
trigger_form_field_change: (extra) ->
@form_field_jq.trigger "input", extra
@form_field_jq.trigger "change", extra