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Observe attributes and update options on change. Update default text on every attribute update. #128

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Observe attributes and update options on change. Update default text on every attribute update. #128

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0df2847
Observe options
Jul 30, 2015
49031cf
Make the default text logic more reliable and add binding
Jul 30, 2015
03f56b3
Apply fix for angular 1.5.0
Feb 8, 2016
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35 changes: 17 additions & 18 deletions chosen.js
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34 changes: 20 additions & 14 deletions src/chosen.coffee
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ angular.module('localytics.directives').directive 'chosen', ['$timeout', ($timeo

restrict: 'A'
require: '?ngModel'
terminal: true
priority: 1
link: (scope, element, attr, ngModel) ->

element.addClass('localytics-chosen')
Expand All @@ -43,30 +43,36 @@ angular.module('localytics.directives').directive 'chosen', ['$timeout', ($timeo

# Options defined as attributes take precedence
angular.forEach attr, (value, key) ->
options[snakeCase(key)] = scope.$eval(value) if key in CHOSEN_OPTION_WHITELIST
if key in CHOSEN_OPTION_WHITELIST

# Observe attributes
# Update the value in options. Set the default texts again. Update message.
attr.$observe key, (value) ->
options[snakeCase(key)] = scope.$eval(value)
chosen.set_default_text();
updateMessage();

options[snakeCase(key)] = scope.$eval(value)

startLoading = -> element.addClass('loading').attr('disabled', true).trigger('chosen:updated')
stopLoading = -> element.removeClass('loading').attr('disabled', false).trigger('chosen:updated')

chosen = null
defaultText = null
empty = false

initOrUpdate = ->
if chosen
element.trigger('chosen:updated')
else
chosen = element.chosen(options).data('chosen')
defaultText = chosen.default_text

# Use Chosen's placeholder or no results found text depending on whether there are options available
removeEmptyMessage = ->
empty = false
element.attr('data-placeholder', defaultText)

disableWithMessage = ->
empty = true
element.attr('data-placeholder', chosen.results_none_found).attr('disabled', true).trigger('chosen:updated')
updateMessage = ->
if empty
element.attr('data-placeholder', chosen.results_none_found).attr('disabled', true)
else
element.removeAttr('data-placeholder')
element.trigger('chosen:updated')

# Watch the underlying ngModel for updates and trigger an update when they occur.
if ngModel
Expand Down Expand Up @@ -99,11 +105,11 @@ angular.module('localytics.directives').directive 'chosen', ['$timeout', ($timeo
if angular.isUndefined(newVal)
startLoading()
else
removeEmptyMessage() if empty
empty = isEmpty(newVal)
stopLoading()
disableWithMessage() if isEmpty(newVal)
updateMessage()
)

scope.$on '$destroy', (event) ->
$timeout.cancel timer if timer?
]
]