- Author:
- JustDelight
- Posted:
- February 23, 2012
- Language:
- JavaScript
- Version:
- 1.3
- Score:
- 0 (after 2 ratings)
CitySelector is a jquery widget, allowing to pick cities from DB, filled by django_ipgeobase application. Also it includes widget for django forms, based on mentioned jquery plugin, views and urlconf, required to provide interaction between widget and DB and middleware, populating request with correspondent location.
Visit https://bitbucket.org/JustDelight/city_selector
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* Jquery UI city selector widget.
*
* Depends on:
* jquery.core.js v1.7
* jquery.ui.core.js v1.8
* jquery.ui.widget.js v1.8
*
* You can grab the rest of the code at https://bitbucket.org/JustDelight/city_selector
*/
(function($) {
"use strict";
var META = {
RES: {
COUNTRIES : 'countries',
REGIONS : 'regions',
CITIES : 'cities'
}
},
CachItem = {
store: function (data) {
if (!this.isNotEmpty()) {
this.data = data
Object.freeze(this)
}
},
isNotEmpty: function () {
return Object.isFrozen(this)
}
},
AbstractLoader = {
cache: {},
queues: {},
_getNestedItem: function (obj, descriptor) {
var nested = obj;
descriptor.forEach(function (item) {
if (!(item in nested)) {
nested[item] = {}
}
nested = nested[item]
})
return nested
},
_getQueue: function (descriptor) {
var last = descriptor.pop(),
nested = this._getNestedItem(this.queues, descriptor);
if (!(nested[last] instanceof Array)) {
nested[last] = []
}
return nested[last]
},
getCacheItem: function (descriptor) {
var item = this._getNestedItem(this.cache, descriptor);
if (item.__proto__ != CachItem) {
item.__proto__ = CachItem;
}
return item;
},
_getData: function (descriptor, callback, path_item) {
var res, queue,
cache_item = this.getCacheItem(descriptor);
if (cache_item.isNotEmpty()) {
callback.call(null, cache_item.data)
} else {
queue = this._getQueue(descriptor)
if (queue.push(callback) == 1) {
$.ajax({
context: this,
url: this.CONFIG.base_url + path_item,
dataType: 'json',
success: function (data, status, xhr) {
var callback;
while (callback = queue.pop()) {
callback.call(null, data)
}
cache_item.store(data)
},
error: function (e) {
console.error(e)
}
})
}
}
},
},
GeoItemsLoader = {
CONFIG: {
base_url: '/some_path/'
},
__proto__: AbstractLoader,
load: function (resource_description, callback) {
this._getData(resource_description, callback, resource_description.join('/') + '/')
}
};
$.widget("ui.city_selector", {
options : {
position: 'bottom',
base_url: '/select/',
locale: 'ru'
},
strings_pack: {
'ru': {
city: 'Город',
region: 'Регион',
country: 'Страна',
prompt: 'выберите город'
},
'en': {
city: 'City',
region: 'Region',
country: 'Country',
prompt: 'select the city'
}
},
_create: function () {
this._setLocale(this.options.locale)
GeoItemsLoader.CONFIG.base_url = this.options.base_url
this._buildWidget()
if ('data' in this.options) {
this.options.data.forEach(function (item) {
GeoItemsLoader.getCacheItem(item[0]).store(item[1])
})
}
if ('initial' in this.options) {
this._loadInitialData('data' in this.options)
}
this._loadCountires()
this._kbdHideHandler = this._handleDocMouseDown.bind(this)
this._mouseHideHandler = this._handleDocKeyPress.bind(this)
},
destroy: function () {
//TODO: implement it!
},
_setOption: function(option, value) {
if (option == 'locale') {
this._setLocale(value)
} else if ((option == 'position') && ((value != 'top') || (value != 'bottom'))) {
throw 'unsupported postion'
}
this.options[option] = value
},
_: function(name) {
return this._localeStrings[name]
},
_setLocale: function(locale) {
if (!(locale in this.strings_pack)) {
throw 'Unsupported locale: ' + locale
} else {
this._localeStrings = this.strings_pack[locale]
}
},
_loadInitialData: function () {
var res, value;
for (res in this.options['initial']) {
value = this.options['initial'][res]
$(this).bind(res, (function (res, value, e) {
$(this).unbind(e)
this._setSelectedValue(res, value)
}).bind(this, res, value))
}
},
_buildWidget: function () {
var title = this.element.attr('value') ? this.element.attr('value') : this._('prompt'),
value, name, id, comp_style,
show_handler = (function () {
this._root.is(":visible") ? this.hide() : this.show()
}).bind(this),
country_change_handler = this._loadRegions.bind(this),
region_change_handler = this._loadCities.bind(this);
this.anchor = $('<a href="#" class="ui-city_celector">' + title + '</a>');
this.element.after(this.anchor)
this.element.hide()
this.anchor.click(show_handler)
this.anchor.addClass(this.options.position == 'top' ? 'bottom' : 'top')
this._root = $('<div></div>').addClass("ui-widget ui-widget-content ui-city_celector").appendTo($(document.body)).hide()
this._selects = {}
this._selects[META.RES.COUNTRIES] = $('<select/>').attr('name', 'country').appendTo(this._root)
this._selects[META.RES.REGIONS] = $('<select/>').attr('name', 'region').appendTo(this._root).hide()
this._selects[META.RES.CITIES] = $('<select/>').attr('name', 'city').appendTo(this._root).hide()
this._selects[META.RES.COUNTRIES].change(function (e) {
country_change_handler($(this).attr('value'))
})
this._selects[META.RES.REGIONS].change(function (e) {
region_change_handler($(this).attr('value'))
})
this._selects[META.RES.CITIES].change(this._setValue.bind(this))
},
show: function () {
var root_element = this._root, root_style = {
left: this.anchor.offset().left
};
switch (this.options.position) {
case 'bottom':
root_style.top = parseInt(this.anchor.offset().top) - 1
root_style.paddingTop = this.anchor.outerHeight()
break;
case 'top':
root_style.bottom = parseInt($(document).height() - this.anchor.offset().top - this.anchor.outerHeight())
root_style.paddingBottom = this.anchor.outerHeight()
}
root_element.css(root_style)
window.setTimeout(function () {
root_element.show()
root_element.focus()
}, 0)
$(document).bind('mousedown', this._kbdHideHandler)
$(document).bind('keypress', this._mouseHideHandler)
this.anchor && this.anchor.toggleClass('ui-state-active')
return false;
},
_handleDocMouseDown: function (e) {
//TODO: try to simplify hiding
if (!($(e.target).closest('.ui-city_celector').is(this._root) || $(e.target).is(this.anchor))) {
this.hide()
}
},
_handleDocKeyPress: function (e) {
if (e.keyCode == 27) {
this.hide()
}
},
hide: function () {
$(document).unbind('mousedown', this._kbdHideHandler)
$(document).unbind('keypress', this._mouseHideHandl)
this.anchor.toggleClass('ui-state-active')
this._root.hide()
},
_generateOptionTag: function (title, value) {
return $('<option/>').text(title).attr('value', value)
},
_fillSelect: function (kind, value_field, title, options) {
var select = this._selects[kind];
select.children().detach()
for(var i = options.length - 1; i >= 0; i--) {
this._generateOptionTag(options[i].name, options[i][value_field]).prependTo(select)
}
if (title !== null) {
this._generateOptionTag(title, 0).prependTo(select)
}
select.show()
select.children(':first-child').attr('selected', true)
$(this).trigger(kind)
},
_lockSelect: function (kind) {
var select = this._selects[kind];
select.children().detach()
select.hide()
},
_setSelectedValue: function (kind, value, silently) {
var select = this._selects[kind];
$('option[value=' + value + ']', select).attr('selected', true)
!silently && select.change()
},
_loadCountires: function () {
GeoItemsLoader.load([META.RES.COUNTRIES], this._fillSelect.bind(this, META.RES.COUNTRIES, 'code', padString(this._('country'), 50, '-')))
},
_loadRegions: function (country_code) {
this._lockSelect(META.RES.CITIES)
if (country_code != 0) {
GeoItemsLoader.load([META.RES.REGIONS, country_code], this._fillSelect.bind(this, META.RES.REGIONS, 'id', padString(this._('region'), 50, '-')))
} else {
this._lockSelect(META.RES.REGIONS)
}
},
_loadCities: function (region_id) {
if (region_id != 0) {
GeoItemsLoader.load([META.RES.CITIES, region_id], this._fillSelect.bind(this, META.RES.CITIES, 'id', padString(this._('city'), 50, '-')))
} else {
this._lockSelect(META.RES.CITIES)
}
},
_setValue: function (e) {
var select = this._selects[META.RES.CITIES],
value = select.attr('value'), city_name = $('option[value=' + value + ']', select).text();
if (value != 0) {
this.element.attr('value', city_name)
this.anchor.text(city_name)
}
}
});
function padString(str, len, spacer) {
var pad_len = (len - str.length) / 2, res = [];
spacer = spacer || ' '
for (var i = Math.ceil(pad_len); i >=0; i--) {
res.push(spacer)
}
res.push(str)
for (var i = Math.floor(pad_len); i >=0; i--) {
res.push(spacer)
}
return res.join('')
}
})(jQuery);
|
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Comments
The link goes to your private repository. So we cannot see the code. You should include a sample of how to use your code here and then can reference it with a link to your bitbucket project, make sure that is public though.
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Sorry, i've shared it.
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