Re-factor Chosen into Coffescript
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Patrick Filler
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chosen/chosen.proto.min.js
vendored
2
chosen/chosen.proto.min.js
vendored
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631
coffee/chosen.proto.coffee
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631
coffee/chosen.proto.coffee
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###
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Chosen for Protoype.js
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by Patrick Filler for Harvest
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Copyright (c) 2011 Harvest
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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###
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root = exports ? this
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class Chosen
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constructor: (elmn) ->
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this.set_default_values()
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@form_field = elmn
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@is_multiple = @form_field.multiple
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@default_text_default = if @form_field.multiple then "Select Some Options" else "Select an Option"
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this.set_up_html()
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this.register_observers()
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set_default_values: ->
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@click_test_action = (evt) => this.test_active_click(evt)
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@active_field = false
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@mouse_on_container = false
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@results_showing = false
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@result_highlighted = null
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@result_single_selected = null
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@choices = 0
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# HTML Templates
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@single_temp = new Template('<a href="#" class="chzn-single"><span>#{default}</span><div><b></b></div></a><div class="chzn-drop" style="left:-9000px;"><div class="chzn-search"><input type="text" /></div><ul class="chzn-results"></ul></div>')
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@multi_temp = new Template('<ul class="chzn-choices"><li class="search-field"><input type="text" value="#{default}" class="default" style="width:25px;" /></li></ul><div class="chzn-drop" style="left:-9000px;"><ul class="chzn-results"></ul></div>')
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@choice_temp = new Template('<li class="search-choice" id="#{id}"><span>#{choice}</span><a href="#" class="search-choice-close" rel="#{position}"></a></li>')
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@no_results_temp = new Template('<li class="no-results">No results match "<span>#{terms}</span>"</li>')
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set_up_html: ->
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@container_id = @form_field.id + "_chzn"
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@f_width = if @form_field.getStyle("width") then parseInt @form_field.getStyle("width"), 10 else @form_field.getWidth()
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container_props =
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'id': @container_id
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'class': 'chzn-container'
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'style': 'width: ' + (@f_width) + 'px' #use parens around @f_width so coffeescript doesn't think + ' px' is a function parameter
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@default_text = if @form_field.readAttribute 'title' then @form_field.readAttribute 'title' else @default_text_default
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base_template = if @is_multiple then new Element('div', container_props).update( @multi_temp.evaluate({ "default": @default_text}) ) else new Element('div', container_props).update( @single_temp.evaluate({ "default":@default_text }) )
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@form_field.hide().insert({ after: base_template })
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@container = $(@container_id)
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@container.addClassName( "chzn-container-" + (if @is_multiple then "multi" else "single") )
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@dropdown = @container.down('div.chzn-drop')
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dd_top = @container.getHeight()
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dd_width = (@f_width - get_side_border_padding(@dropdown))
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@dropdown.setStyle({"width": dd_width + "px", "top": dd_top + "px"})
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@search_field = @container.down('input')
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@search_results = @container.down('ul.chzn-results')
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this.search_field_scale()
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@search_no_results = @container.down('li.no-results')
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if @is_multiple
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@search_choices = @container.down('ul.chzn-choices')
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@search_container = @container.down('li.search-field')
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else
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@search_container = @container.down('div.chzn-search')
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@selected_item = @container.down('.chzn-single')
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sf_width = dd_width - get_side_border_padding(@search_container) - get_side_border_padding(@search_field)
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@search_field.setStyle( {"width" : sf_width + "px"} )
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this.results_build()
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this.set_tab_index()
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register_observers: ->
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@container.observe "click", (evt) => this.container_click(evt)
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@container.observe "mouseenter", (evt) => this.mouse_enter(evt)
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@container.observe "mouseleave", (evt) => this.mouse_leave(evt)
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@search_results.observe "click", (evt) => this.search_results_click(evt)
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@search_results.observe "mouseover", (evt) => this.search_results_mouseover(evt)
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@search_results.observe "mouseout", (evt) => this.search_results_mouseout(evt)
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@form_field.observe "liszt:updated", (evt) => this.results_update_field(evt)
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@search_field.observe "blur", (evt) => this.input_blur(evt)
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@search_field.observe "keyup", (evt) => this.keyup_checker(evt)
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@search_field.observe "keydown", (evt) => this.keydown_checker(evt)
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if @is_multiple
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@search_choices.observe "click", (evt) => this.choices_click(evt)
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@search_field.observe "focus", (evt) => this.input_focus(evt)
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else
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@selected_item.observe "focus", (evt) => this.activate_field(evt)
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container_click: (evt) ->
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if evt and evt.type is "click"
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evt.stop()
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if not @pending_destroy_click
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if not @active_field
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@search_field.clear() if @is_multiple
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document.observe "click", @click_test_action
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this.results_show()
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else if not @is_multiple and evt and (evt.target is @selected_item || evt.target.up("a.chzn-single"))
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this.results_show()
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this.activate_field()
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else
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@pending_destroy_click = false
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mouse_enter: -> @mouse_on_container = true
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mouse_leave: -> @mouse_on_container = false
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input_focus: (evt) ->
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setTimeout this.container_click.bind(this), 50 unless @active_field
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input_blur: (evt) ->
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if not @mouse_on_container
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@active_field = false
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setTimeout this.blur_test.bind(this), 100
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blur_test: (evt) ->
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this.close_field() if not @active_field and @container.hasClassName("chzn-container-active")
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close_field: ->
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document.stopObserving "click", @click_test_action
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if not @is_multiple
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@selected_item.tabIndex = @search_field.tabIndex
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@search_field.tabIndex = -1
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@active_field = false
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this.results_hide()
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@container.removeClassName "chzn-container-active"
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this.winnow_results_clear()
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this.clear_backstroke()
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this.show_search_field_default()
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this.search_field_scale()
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activate_field: ->
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if not @is_multiple and not @active_field
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@search_field.tabIndex = @selected_item.tabIndex
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@selected_item.tabIndex = -1
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@container.addClassName "chzn-container-active"
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@active_field = true
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@search_field.value = @search_field.value
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@search_field.focus()
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test_active_click: (evt) ->
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if evt.target.up('#' + @container.id)
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@active_field = true
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else
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this.close_field()
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results_build: ->
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startTime = new Date()
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@parsing = true
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@results_data = OptionsParser.select_to_array @form_field
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if @is_multiple and @choices > 0
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@search_choices.select("li.search-choice").invoke("remove")
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@choices = 0
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else if not @is_multiple
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@selected_item.down("span").update(@default_text)
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content = ''
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for data in @results_data
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if data.group
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content += this.result_add_group data
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else
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content += this.result_add_option data
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if data.selected and @is_multiple
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this.choice_build data
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else if data.selected and not @is_multiple
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@selected_item.down("span").update( data.text )
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this.show_search_field_default()
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@search_results.update content
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@parsing = false
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result_add_group: (group) ->
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if not group.disabled
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group.dom_id = @form_field.id + "chzn_g_" + group.id
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'<li id="' + group.dom_id + '" class="group-result">' + group.label.escapeHTML() + '</li>'
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else
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""
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result_add_option: (option) ->
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if not option.disabled
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option.dom_id = @form_field.id + "chzn_o_" + option.id
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classes = if option.selected and @is_multiple then [] else ["active-result"]
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classes.push "result-selected" if option.selected
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classes.push "group-option" if option.group_id >= 0
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'<li id="' + option.dom_id + '" class="' + classes.join(' ') + '">' + option.text.escapeHTML() + '</li>'
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else
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""
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results_update_field: ->
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this.result_clear_highlight()
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@result_single_selected = null
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this.results_build()
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result_do_highlight: (el) ->
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this.result_clear_highlight();
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@result_highlight = el;
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@result_highlight.addClassName "highlighted"
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maxHeight = parseInt @search_results.getStyle('maxHeight'), 10
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visible_top = @search_results.scrollTop
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visible_bottom = maxHeight + visible_top
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high_top = @result_highlight.positionedOffset().top
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high_bottom = high_top + @result_highlight.getHeight()
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if high_bottom >= visible_bottom
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@search_results.scrollTop = if (high_bottom - maxHeight) > 0 then (high_bottom - maxHeight) else 0
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else if high_top < visible_top
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@search_results.scrollTop = high_top
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result_clear_highlight: ->
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@result_highlight.removeClassName('highlighted') if @result_highlight
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@result_highlight = null
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results_show: ->
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if not @is_multiple
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@selected_item.addClassName('chzn-single-with-drop')
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if @result_single_selected
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this.result_do_highlight( @result_single_selected )
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dd_top = if @is_multiple then @container.getHeight() else (@container.getHeight() - 1)
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@dropdown.setStyle {"top": dd_top + "px", "left":0}
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@results_showing = true
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@search_field.focus()
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@search_field.value = @search_field.value
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this.winnow_results()
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results_hide: ->
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@selected_item.removeClassName('chzn-single-with-drop') unless @is_multiple
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this.result_clear_highlight()
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@dropdown.setStyle({"left":"-9000px"})
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@results_showing = false
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set_tab_index: (el) ->
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if @form_field.tabIndex
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ti = @form_field.tabIndex
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@form_field.tabIndex = -1
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if @is_multiple
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@search_field.tabIndex = ti
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else
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@selected_item.tabIndex = ti
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@search_field.tabIndex = -1
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show_search_field_default: ->
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if @is_multiple and @choices < 1 and not @active_field
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@search_field.value = @default_text
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@search_field.addClassName "default"
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else
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@search_field.value = ""
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@search_field.removeClassName "default"
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search_results_click: (evt) ->
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target = if evt.target.hasClassName("active-result") then evt.target else evt.target.up(".active-result")
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if target
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@result_highlight = target
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this.result_select()
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search_results_mouseover: (evt) ->
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target = if evt.target.hasClassName("active-result") then evt.target else evt.target.up(".active-result")
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this.result_do_highlight( target ) if target
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search_results_mouseout: (evt) ->
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this.result_clear_highlight() if evt.target.hasClassName('active-result') or evt.target.up('.active-result')
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choices_click: (evt) ->
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evt.preventDefault()
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if( @active_field and not(evt.target.hasClassName('search-choice') or evt.target.up('.search-choice')) and not @results_showing )
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this.results_show()
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choice_build: (item) ->
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choice_id = @form_field.id + "_chzn_c_" + item.id
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@choices += 1
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@search_container.insert { before: @choice_temp.evaluate({"id":choice_id, "choice":item.text, "position":item.id}) }
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link = $(choice_id).down('a')
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link.observe "click", (evt) => this.choice_destroy_link_click(evt)
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choice_destroy_link_click: (evt) ->
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evt.preventDefault()
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@pending_destroy_click = true
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this.choice_destroy evt.target
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choice_destroy: (link) ->
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@choices -= 1
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this.show_search_field_default()
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this.results_hide() if @is_multiple and @choices > 0 and @search_field.value.length < 1
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this.result_deselect link.readAttribute("rel")
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link.up('li').remove()
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result_select: ->
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if @result_highlight
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high = @result_highlight
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this.result_clear_highlight();
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high.addClassName("result-selected")
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if @is_multiple
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this.result_deactivate high
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else
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@result_single_selected = high
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position = high.id.substr(high.id.lastIndexOf("_") + 1 )
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item = @results_data[position]
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item.selected = true
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@form_field.options[item.select_index].selected = true
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if @is_multiple
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this.choice_build item
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else
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@selected_item.down("span").update(item.text)
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this.results_hide()
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@search_field.value = ""
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@form_field.simulate("change") if typeof Event.simulate is 'function'
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this.search_field_scale()
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result_activate: (el) ->
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el.addClassName("active-result").show()
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result_deactivate: (el) ->
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el.removeClassName("active-result").hide()
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result_deselect: (pos) ->
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result_data = @results_data[pos]
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result_data.selected = false
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@form_field.options[result_data.select_index].selected = false
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result = $(@form_field.id + "chzn_o_" + pos)
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result.removeClassName("result-selected").addClassName("active-result").show()
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this.result_clear_highlight()
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this.winnow_results()
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@form_field.simulate("change") if typeof Event.simulate is 'function'
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this.search_field_scale()
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results_search: (evt) ->
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if @results_showing
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this.winnow_results()
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else
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this.results_show()
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winnow_results: ->
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startTime = new Date()
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this.no_results_clear()
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results = 0
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searchText = if @search_field.value is @default_text then "" else @search_field.value.strip()
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regex = new RegExp('^' + searchText.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&"), 'i')
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zregex = new RegExp(searchText.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&"), 'i')
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for option in @results_data
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if not option.disabled
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if option.group
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$(option.dom_id).hide()
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else if not (@is_multiple and option.selected)
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found = false
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result_id = @form_field.id + "chzn_o_" + option.id
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if regex.test option.text
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found = true;
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results += 1;
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else if option.text.indexOf(" ") >= 0 or option.text.indexOf("[") == 0
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#TODO: replace this substitution of /\[\]/ with a list of characters to skip.
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parts = option.text.replace(/\[|\]/g, "").split(" ")
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if parts.length
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for part in parts
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if regex.test part
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found = true
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results += 1
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if found
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if searchText.length
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startpos = option.text.search zregex
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text = option.text.substr(0, startpos + searchText.length) + '</em>' + option.text.substr(startpos + searchText.length)
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text = text.substr(0, startpos) + '<em>' + text.substr(startpos)
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else
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text = option.text
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$(result_id).update text if $(result_id).innerHTML != text
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this.result_activate $(result_id)
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$(@results_data[option.group_id].dom_id).show() if option.group_id?
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else
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this.result_clear_highlight() if $(result_id) is @result_highlight
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this.result_deactivate $(result_id)
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if results < 1 and searchText.length
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this.no_results(searchText)
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else
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||||
this.winnow_results_set_highlight()
|
||||
|
||||
winnow_results_clear: ->
|
||||
@search_field.clear()
|
||||
lis = @search_results.select("li")
|
||||
|
||||
for li in lis
|
||||
if li.hasClassName("group-result")
|
||||
li.show()
|
||||
else if not @is_multiple or not li.hasClassName("result-selected")
|
||||
this.result_activate li
|
||||
|
||||
winnow_results_set_highlight: ->
|
||||
if not @result_highlight
|
||||
do_high = @search_results.down(".active-result")
|
||||
if(do_high)
|
||||
this.result_do_highlight do_high
|
||||
|
||||
no_results: (terms) ->
|
||||
@search_results.insert @no_results_temp.evaluate({"terms":terms.escapeHTML()})
|
||||
|
||||
no_results_clear: ->
|
||||
nr = null
|
||||
nr.remove() while nr = @search_results.down(".no-results")
|
||||
|
||||
|
||||
keydown_arrow: ->
|
||||
actives = @search_results.select("li.active-result")
|
||||
if actives.length
|
||||
if not @result_highlight
|
||||
this.result_do_highlight actives.first()
|
||||
else if @results_showing
|
||||
sibs = @result_highlight.nextSiblings()
|
||||
nexts = sibs.intersect(actives)
|
||||
this.result_do_highlight nexts.first() if nexts.length
|
||||
this.results_show() if not @results_showing
|
||||
|
||||
keyup_arrow: ->
|
||||
if not @results_showing and not @is_multiple
|
||||
this.results_show()
|
||||
else if @result_highlight
|
||||
sibs = @result_highlight.previousSiblings()
|
||||
actives = @search_results.select("li.active-result")
|
||||
prevs = sibs.intersect(actives)
|
||||
|
||||
if prevs.length
|
||||
this.result_do_highlight prevs.first()
|
||||
else
|
||||
this.results_hide() if @choices > 0
|
||||
this.result_clear_highlight()
|
||||
|
||||
keydown_backstroke: ->
|
||||
if @pending_backstroke
|
||||
this.choice_destroy @pending_backstroke.down("a")
|
||||
this.clear_backstroke()
|
||||
else
|
||||
@pending_backstroke = @search_container.siblings("li.search-choice").last()
|
||||
@pending_backstroke.addClassName("search-choice-focus")
|
||||
|
||||
clear_backstroke: ->
|
||||
@pending_backstroke.removeClassName("search-choice-focus") if @pending_backstroke
|
||||
@pending_backstroke = null
|
||||
|
||||
keyup_checker: (evt) ->
|
||||
stroke = evt.which ? evt.keyCode
|
||||
this.search_field_scale()
|
||||
|
||||
switch stroke
|
||||
when 8
|
||||
if @is_multiple and @backstroke_length < 1 and @choices > 0
|
||||
this.keydown_backstroke()
|
||||
else if not @pending_backstroke
|
||||
this.results_search()
|
||||
when 13
|
||||
evt.preventDefault()
|
||||
this.result_select() if this.results_showing
|
||||
when 9, 13, 38, 40, 16
|
||||
# don't do anything on these keys
|
||||
else this.results_search()
|
||||
|
||||
|
||||
keydown_checker: (evt) ->
|
||||
stroke = evt.which ? evt.keyCode
|
||||
this.search_field_scale()
|
||||
|
||||
this.clear_backstroke() if stroke != 8 and this.pending_backstroke
|
||||
|
||||
switch stroke
|
||||
when 8
|
||||
@backstroke_length = this.search_field.value.length
|
||||
when 9
|
||||
@mouse_on_container = false
|
||||
when 13
|
||||
evt.preventDefault()
|
||||
when 38
|
||||
evt.preventDefault()
|
||||
this.keyup_arrow()
|
||||
when 40
|
||||
this.keydown_arrow()
|
||||
|
||||
|
||||
search_field_scale: ->
|
||||
if @is_multiple
|
||||
h = 0
|
||||
w = 0
|
||||
|
||||
style_block = "position:absolute; left: -1000px; top: -1000px; display:none;"
|
||||
styles = ['font-size','font-style', 'font-weight', 'font-family','line-height', 'text-transform', 'letter-spacing']
|
||||
|
||||
for style of styles
|
||||
style_block += style + ":" + @search_field.getStyle(style) + ";"
|
||||
|
||||
div = new Element('div', { 'style' : style_block }).update(@search_field.value)
|
||||
document.body.appendChild(div)
|
||||
|
||||
w = Element.measure(div, 'width') + 25
|
||||
div.remove()
|
||||
|
||||
if( w > @f_width-10 )
|
||||
w = @f_width - 10
|
||||
|
||||
@search_field.setStyle({'width': w + 'px'})
|
||||
|
||||
dd_top = @container.getHeight()
|
||||
@dropdown.setStyle({"top": dd_top + "px"})
|
||||
|
||||
root.Chosen = Chosen
|
||||
|
||||
document.observe 'dom:loaded', (evt) ->
|
||||
selects = $$(".chzn-select")
|
||||
new Chosen select for select in selects
|
||||
|
||||
get_side_border_padding = (elmt) ->
|
||||
layout = new Element.Layout(elmt)
|
||||
side_border_padding = layout.get("border-left") + layout.get("border-right") + layout.get("padding-left") + layout.get("padding-right")
|
||||
|
||||
root.get_side_border_padding = get_side_border_padding
|
||||
|
||||
root = exports ? this
|
||||
|
||||
class OptionsParser
|
||||
|
||||
constructor: ->
|
||||
@group_index = 0
|
||||
@sel_index = 0
|
||||
@parsed = []
|
||||
|
||||
add_node: (child) ->
|
||||
if child.nodeName is "OPTGROUP"
|
||||
this.add_group child
|
||||
else
|
||||
this.add_option child
|
||||
|
||||
add_group: (group) ->
|
||||
group_id = @sel_index + @group_index
|
||||
@parsed.push
|
||||
id: group_id
|
||||
group: true
|
||||
label: group.label
|
||||
position: @group_index
|
||||
children: 0
|
||||
disabled: group.disabled
|
||||
this.add_option( option, group_id, group.disabled ) for option in group.childNodes
|
||||
@group_index += 1
|
||||
|
||||
add_option: (option, group_id, group_disabled) ->
|
||||
if option.nodeName is "OPTION" and (@sel_index > 0 or option.text != "")
|
||||
if group_id || group_id is 0
|
||||
@parsed[group_id].children += 1
|
||||
@parsed.push
|
||||
id: @sel_index + @group_index
|
||||
select_index: @sel_index
|
||||
value: option.value
|
||||
text: option.text
|
||||
selected: option.selected
|
||||
disabled: ((group_disabled is true) ? group_disabled : option.disabled)
|
||||
group_id: group_id
|
||||
@sel_index += 1
|
||||
|
||||
OptionsParser.select_to_array = (select) ->
|
||||
parser = new OptionsParser()
|
||||
parser.add_node( child ) for child in select.childNodes
|
||||
parser.parsed
|
||||
|
||||
root.OptionsParser = OptionsParser
|
||||
Loading…
Reference in a new issue