Select2 is a jQuery based replacement for select boxes.
It supports searching, remote data sets, and infinite scrolling of results.
Look and feel of Select2 is based on the excellent
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layout: main
-title: Select2 2.0
+title: Select2 2.1
group: navigation
+version: 2.1
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Select2 also supports multi-value select boxes. The select below is declared with the multiple attribute. Select2 automatially picks up on this:
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Example Code
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Multi-Value Select Boxes
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Select2 also supports multi-value select boxes. The select below is declared with the multiple attribute. Select2 automatially picks up on this:
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Example Code
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Placeholders
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A placeholder value can be defined and will be displayed until a selection is made:
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The placeholder can be declared via a data-placeholder attribute attached to the select, or via the placeholder configuration element as seen in the example code
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Optionally, a clear button (visible once a selection is made) is available to reset the select box back to the placeholder value.
A placeholder value can be defined and will be displayed until a selection is made:
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The placeholder can be declared via a data-placeholder attribute attached to the select, or via the placeholder configuration element as seen in the example code
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Optionally, a clear button (visible once a selection is made) is available to reset the select box back to the placeholder value.
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Example Code
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Example Code
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Minimum Input
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Select2 supports a minimum input setting which is useful for large remote datasets where short search terms are not very useful:
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Example Code
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Minimum Input
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Select2 supports a minimum input setting which is useful for large remote datasets where short search terms are not very useful:
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Example Code
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Templating
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Various display options of the Select2 component can be changed:
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Example Code
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Templating
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Various display options of the Select2 component can be changed:
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Example Code
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Loading Data
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Select2 uses a function to load result data. Here is a trivial example that creates choices that consist of user's input repeated a number of times:
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In order to take advantage of custom data loading Select2 should be attached to an input type='hidden' tag, otherwise data is parsed from select's option tags.
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Example Code
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Loading Data
+
Select2 uses a function to load result data. Here is a trivial example that creates choices that consist of user's input repeated a number of times:
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In order to take advantage of custom data loading Select2 should be attached to an input type='hidden' tag, otherwise data is parsed from select's option tags.
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Example Code
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Loading Array Data
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Select2 provides some shortcuts that make it easy to access local data stored in an array instead of having to write a query function mentioned in the example above.
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Example below inlines the data by specifying an array in the data element. Items in such an array must have id and text keys.
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If your data does not have a text key, an alternative key can be specified as a string:
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or as a function:
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Example Code
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Loading Array Data
+
Select2 provides some shortcuts that make it easy to access local data stored in an array instead of having to write a query function mentioned in the example above.
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Example below inlines the data by specifying an array in the data element. Items in such an array must have id and text keys.
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If your data does not have a text key, an alternative key can be specified as a string:
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or as a function:
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Example Code
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Loading Remote Data
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Select2 comes with AJAX/JSONP support built in. In this example we will search for a movie using Rotten Tomatoes API:
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If this example does not work it is probably because the Rotten Tomatoes API key usage of 10000 requests per day has been exhausted. Please try again tomorrow.
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Example Code
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Select2 uses jQuery's $.ajax function to execute the remote call by default. An alternative transport function can be specified in the ajax settings, or an entirely custom implementation can be built by providing a custom query function instead of using the ajax helper
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Loading Remote Data
+
Select2 comes with AJAX/JSONP support built in. In this example we will search for a movie using Rotten Tomatoes API:
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If this example does not work it is probably because the Rotten Tomatoes API key usage of 10000 requests per day has been exhausted. Please try again tomorrow.
+
Example Code
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Select2 uses jQuery's $.ajax function to execute the remote call by default. An alternative transport function can be specified in the ajax settings, or an entirely custom implementation can be built by providing a custom query function instead of using the ajax helper
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Infinite Scroll with Remote Data
+
Select2 supports lazy-appending of results when the result list is scrolled to the end.
+ In order to enable the remote service must support some sort of a paging mechanism and
+ the query function given to Select2 must take advantage of it. The following example demonstrates
+ how this can be set up. Search for some keyword and then scroll the result list to the end to
+ see more results load:
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+
If this example does not work it is probably because the Rotten Tomatoes API key usage of 10000 requests per day has been exhausted. Please try again tomorrow.
+
Example Code
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Infinite Scroll with Remote Data
-
Select2 supports lazy-appending of results when the result list is scrolled to the end.
- In order to enable the remote service must support some sort of a paging mechanism and
- the query function given to Select2 must take advantage of it. The following example demonstrates
- how this can be set up. Search for some keyword and then scroll the result list to the end to
- see more results load:
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If this example does not work it is probably because the Rotten Tomatoes API key usage of 10000 requests per day has been exhausted. Please try again tomorrow.
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Example Code
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Programmatic Access
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Select2 supports methods that allow programmatic control of the component
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Example Code
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Programmatic Access
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Select2 supports methods that allow programmatic control of the componentL
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Example Code
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Change Event
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Change Event
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Select2 triggers the change event on the original element whenever its value is changed by
+ the user
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Select2 triggers the change event on the original element whenever its value is changed by
- the user
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Example Code
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Example Code
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Tagging Support
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Tagging Support
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Select2 can be used to quickly set up fields used for tagging
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Select2 can be used to quickly set up fields used for tagging
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Note that when tagging is enabled the user can select from pre-existing tags or create a new tag by
- picking the first choice which is what the user has typed into the search box so far.
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Example Code
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Note that when tagging is enabled the user can select from pre-existing tags or create a new tag by
+ picking the first choice which is what the user has typed into the search box so far.
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Example Code
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Reacting to external value changes
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Reacting to external value changes
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Select2 can react to external value changes and keep its selection in-sync. This feature allows
- Select2 to work seamlessly with front-end frameworks that use data binding between ui components
- and model values.
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This feature is only available when initSelection() function is provided in
- the options. This function is needed to map the choice ids set on the element to objects used by
- Select2. This function is set by default when Select2 is attached to a select or when
- the tags helper function is used.
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Example Code
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Select2 can react to external value changes and keep its selection in-sync. This feature allows
+ Select2 to work seamlessly with front-end frameworks that use data binding between ui components
+ and model values.
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+
+
This feature is only available when initSelection() function is provided in
+ the options. This function is needed to map the choice ids set on the element to objects used by
+ Select2. This function is set by default when Select2 is attached to a select or when
+ the tags helper function is used.
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+
Example Code
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Select2 Lifecycle
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Select2 Lifecycle
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Example Code
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Example Code
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Select2 Drag and Drop Sorting
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+ Select2 supports drag and drop sorting of selected choices. Select2 does not, itself, provide the necessary code to perform dragging and dropping, instead it provides hooks that other libraries can use to provide the behavior. In this example we are using JQuery UI's sortable() plugin.
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The sorting is only available when Select2 is attached to a hidden input field.
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Example Code
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Select2 Disabled Mode
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Example Code
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Custom Matcher
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Unlike other dropdowns on this page, this one matches options only if the term appears in the beginning of the string as opposed to anywhere
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Example Code
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Documentation
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Constructor
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Parameter
Type
Description
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minimumInputLength
int
Number of characters necessary to start a search
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minimumResultsForSearch
int
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- The minimum number of results that must be initially (after opening the dropdown for the first time)
- populated in order to keep the search field. This
- is useful for cases where local data is used with just a few results, in which case the search box
- is not very useful and wastes screen space.
-
-
Only applies to single-value select boxes
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placeholder
object/string
-
Initial value that is selected if no other selection is made.
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- The value can be specified either as an object or as a string. If
- specified as a string any custom formatSelection function will be
- bypassed and the string value will be rendered directly.
-
-
The placeholder can also be specified as a data-placeholder attribute on the select
- or input element that Select2 is attached to. In this case only string
- values are supported
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+
-
Note that because browsers assume the first option element
- is selected in
- non-multi-value select boxes an empty first option element must be provided (<option></option>)
- for the placeholder to work.
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+
+
Documentation
+
-
When Select2 is used in multi-select mode the placeholder must be a string.
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allowClear
-
boolean
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-
- Whether or not a clear button is displayed when the select box has a selection. The
- button,
- when clicked, resets the value of the select box back to the placeholder, thus this option is
- only
- available when the placeholder is specified.
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+
Constructor
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+
Parameter
Type
Description
+
+
minimumInputLength
int
Number of characters necessary to start a search
+
minimumResultsForSearch
int
+
+ The minimum number of results that must be initially (after opening the dropdown for the first time)
+ populated in order to keep the search field. This
+ is useful for cases where local data is used with just a few results, in which case the search box
+ is not very useful and wastes screen space.
+
+
Only applies to single-value select boxes
+
+
+
placeholder
object/string
+
Initial value that is selected if no other selection is made.
+
+ The value can be specified either as an object or as a string. If
+ specified as a string any custom formatSelection function will be
+ bypassed and the string value will be rendered directly.
+
+
The placeholder can also be specified as a data-placeholder attribute on the select
+ or input element that Select2 is attached to. In this case only string
+ values are supported
+
-
- Also, note that this option only works with
- non-multi-value based selects because multi-value selects always provide such a button for every
- selected option.
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-
-
-
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multiple
-
boolean
-
-
- Whether or not Select2 allows selection of multiple values.
-
-
When Select2 is attached to a select element this value will be ignored and select's
- multiple attribute will be used instead.
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-
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-
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closeOnSelect
-
boolean
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-
- If set to true the dropdown is not closed after a selection is made, allowing for rapid selection of multiple items. By default this option is disabled.
-
+
Note that because browsers assume the first option element
+ is selected in
+ non-multi-value select boxes an empty first option element must be provided (<option></option>)
+ for the placeholder to work.
+
-
- Only applies when configured in multi-select mode.
-
-
-
-
id
function
- Function used to get the id from the choice object or a string representing the key under which the id is stored.
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id(object)
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Parameter
Type
Description
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object
object
A choice object
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<returns>
string
the id of the object
-
- The default implementation expects the object to have a id property that is returned.
-
-
formatSelection
function
- Function used to render the current selection.
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formatSelection(object)
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-
Parameter
Type
Description
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object
object
The selected result object returned from the query function
-
<returns>
string
Html that represents the selection
-
- The default implementation expects the object to have a text property that is returned.
-
-
formatResult
function
- Function used to render a result that the user can select.
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formatResult(object)
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Parameter
Type
Description
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object
object
One of the result objects returned from the query function
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<returns>
string
Html that represents the result
-
- The default implementation expects the object to have a text property that is returned.
-
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formatNoMatches
function
- Function used to render the "No matches" message
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formatNoMatches(term)
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Parameter
Type
Description
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term
string
Search string entered by user
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<returns>
string
Message html
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-
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formatInputTooShort
function
- Function used to render the "Search input too short" message
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formatInputTooShort(term, minLength)
-
-
Parameter
Type
Description
-
term
string
Search string entered by user
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minLength
int
Minimum required term length
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<returns>
string
Message html
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-
-
createSearchChoice
function
- Creates a new selectable choice from user's search term. Allows creation of choices not available via the query
- function. Useful when the user can create choices on the fly, eg for the 'tagging' usecase.
-
createSearchChoice(term)
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-
Parameter
Type
Description
-
term
string
Search string entered by user
-
<returns>
object (optional)
Object representing the new choice.
- Must at least contain an id attribute.
-
- If the function returns undefined or null no choice will be created. If a new
- choice is created it is displayed first in the selection list so that user may select it by simply pressing
- enter.
-
-
When used in combination with input[type=hidden] tag care
- must be taken to sanitize the id attribute of the choice object, especially stripping
- , as it is used as a value separator
-
-
initSelection
function
- Called when Select2 is created to allow the user to initialize the selection based on the value of the
- element select2 is attached to.
-
- Essentially this is an id->object mapping function.
-
-
initSelection(element)
-
-
Parameter
Type
Description
-
element
jQuery array
element Select2 is attached to
-
<returns>
object or array of objects
Object representing the choice
- to be selected, or an array of such objects in case Select2 is in multi mode.
-
-
This function will only be called when there is initial input to be processed.
- Here is an example implementation used for tags. Tags are the simplest form of data where the id is also
- the text:
+
When Select2 is used in multi-select mode the placeholder must be a string.
+
+
+
allowClear
+
boolean
+
+
+ Whether or not a clear button is displayed when the select box has a selection. The
+ button,
+ when clicked, resets the value of the select box back to the placeholder, thus this option is
+ only
+ available when the placeholder is specified.
+
+
When attached to a select an option with an empty value must be provided.
+ This is the option that will be selected when the button is pressed since a select box requires
+ at least one selection option.
+
+ Also, note that this option only works with
+ non-multi-value based selects because multi-value selects always provide such a button for every
+ selected option.
+
+
+
+
+
multiple
+
boolean
+
+
+ Whether or not Select2 allows selection of multiple values.
+
+
When Select2 is attached to a select element this value will be ignored and select's
+ multiple attribute will be used instead.
+
+
+
+
+
closeOnSelect
+
boolean
+
+
+ If set to true the dropdown is not closed after a selection is made, allowing for rapid selection of multiple items. By default this option is disabled.
+
+
+
+ Only applies when configured in multi-select mode.
+
+
+
+
id
function
+ Function used to get the id from the choice object or a string representing the key under which the id is stored.
+
id(object)
+
+
Parameter
Type
Description
+
object
object
A choice object
+
<returns>
string
the id of the object
+
+ The default implementation expects the object to have a id property that is returned.
+
+
matcher
function
+ Used to determine whether or not the search term matches an option when a built-in query function is used.
+ The built in query function is used when Select2 is attached to a select, or the local or tags helpers are used.
+
matcher(term, text)
+
+
Parameter
Type
Description
+
term
string
search term
+
text
string
text of the option being matched
+
<returns>
boolean
true if search term matches the option text, or false otherwise
+
+ The default implementation is case insensitive and matches anywhere in ther term:
+ function(term, text) { return text.toUpperCase().indexOf(term.toUpperCase())>0; }
+
+
formatSelection
function
+ Function used to render the current selection.
+
formatSelection(object)
+
+
Parameter
Type
Description
+
object
object
The selected result object returned from the query function
+
<returns>
string
Html that represents the selection
+
+ The default implementation expects the object to have a text property that is returned.
+
+
formatResult
function
+ Function used to render a result that the user can select.
+
formatResult(object)
+
+
Parameter
Type
Description
+
object
object
One of the result objects returned from the query function
+
<returns>
string
Html that represents the result
+
+ The default implementation expects the object to have a text property that is returned.
+
+
formatNoMatches
function
+ Function used to render the "No matches" message
+
formatNoMatches(term)
+
+
Parameter
Type
Description
+
term
string
Search string entered by user
+
<returns>
string
Message html
+
+
+
formatInputTooShort
function
+ Function used to render the "Search input too short" message
+
formatInputTooShort(term, minLength)
+
+
Parameter
Type
Description
+
term
string
Search string entered by user
+
minLength
int
Minimum required term length
+
<returns>
string
Message html
+
+
+
createSearchChoice
function
+ Creates a new selectable choice from user's search term. Allows creation of choices not available via the query
+ function. Useful when the user can create choices on the fly, eg for the 'tagging' usecase.
+
createSearchChoice(term)
+
+
Parameter
Type
Description
+
term
string
Search string entered by user
+
<returns>
object (optional)
Object representing the new choice.
+ Must at least contain an id attribute.
+
+ If the function returns undefined or null no choice will be created. If a new
+ choice is created it is displayed first in the selection list so that user may select it by simply pressing
+ enter.
+
+
When used in combination with input[type=hidden] tag care
+ must be taken to sanitize the id attribute of the choice object, especially stripping
+ , as it is used as a value separator
+
+
initSelection
function
+ Called when Select2 is created to allow the user to initialize the selection based on the value of the
+ element select2 is attached to.
+
+ Essentially this is an id->object mapping function.
+
+
initSelection(element)
+
+
Parameter
Type
Description
+
element
jQuery array
element Select2 is attached to
+
<returns>
object or array of objects
Object representing the choice
+ to be selected, or an array of such objects in case Select2 is in multi mode.
+
+
This function will only be called when there is initial input to be processed.
+ Here is an example implementation used for tags. Tags are the simplest form of data where the id is also
+ the text:
- Function used to query results for the search term.
-
query(options)
+
+
+
query
+
function
+
+ Function used to query results for the search term.
+
query(options)
+
+
Parameter
Type
Description
+
options.term
string
Search string entered by user
+
options.page
int
1-based page number tracked by Select2 for use with infinite scrolling of results
+
options.context
object
An object that persists across the lifecycle of queries for the same search term (the query to retrieve the initial results, and subsequent queries to retrieve more result pages for the same search term). When this function is first called for a new search term this object will be null. The user may choose to set any object in the results.context field - this object will then be used as the context parameter for all calls to the query method that will load more search results for the initial search term. The object will be reset back to null when a new search term is queried. This feature is useful when a page number is not easily mapped against the server side paging mechanism. For example, some server side paging mechanism may return a "continuation token" that needs to be passed back to them in order to retrieve the next page of search results.
+
options.callback
function
+
Callback function that should be called with the result object. The result object:
Parameter
Type
Description
-
options.term
string
Search string entered by user
-
options.page
int
1-based page number tracked by Select2 for use with infinite scrolling of results
-
options.callback
function
-
Callback function that should be called with the result object. The result object:
-
-
Parameter
Type
Description
-
result.results
[object]
Array of result objects. The default renderers expect objects with id and text keys. The id attribute is required, even if custom renderers are used.
-
result.more
boolean
trueif more results are available for the current search term
-
-
+
result.results
[object]
Array of result objects. The default renderers expect objects with id and text keys. The id attribute is required, even if custom renderers are used.
+
result.more
boolean
trueif more results are available for the current search term
+
results.context
object
A user-defined object that should be made available as the context parameter to the query function on subsequent queries to load more result pages for the same search term. See the description of options.context parameter.
-
In order for this function to work Select2 should be attached to a input type='hidden' tag instead of a select.
-
-
-
ajax
object
- Options for the built in ajax query function. This object acts as a shortcut for having to manually write a function that performs ajax requests. The built-in function supports more advanced features such as throttling and dropping out-of-order responses.
+
+
+
In order for this function to work Select2 should be attached to a input type='hidden' tag instead of a select.
+
+
+
ajax
object
+ Options for the built in ajax query function. This object acts as a shortcut for having to manually write a function that performs ajax requests. The built-in function supports more advanced features such as throttling and dropping out-of-order responses.
+
+
+
Parameter
Type
Description
+
transport
function
Function that will be used to perform the ajax request. Must be parameter-compatible with $.ajax. Defaults to $.ajax if not specified.
+ Allows the use of various ajax wrapper libraries such as: AjaxManager.
+
url
string
Ajax url
+
dataType
string
Data type for the request. ajax, jsonp, other formats supported by jquery
+
quietMillis
int
Number of milliseconds to wait for the user to stop typing before issuing the ajax request
+
data
function
+ Function to generate query parameters for the ajax request.
+
data(term, page)
+
+
Parameter
Type
Description
+
term
string
Search term
+
page
int
1-based page number tracked by Select2 for use with infinite scrolling of results
Results object. See "options.callback" in the "query" function for format.
+
+
+
+
In order for this function to work Select2 should be attached to a input type='hidden' tag instead of a select.
+
+
data
array/object
+ Options for the built in query function that works with arrays.
+
If this element contains an array, each element in the array must contain id and text keys
+
Alternatively, this element can be specified as an object in which results key must contain the data as an array and a text key can either be the name of the key in data items that contains text or a function that retrieves the text given a data element from the array
+
+
tags
array/function
+ Puts Select2 into 'tagging'mode where the user can add new choices and pre-existing tags are provided via
+ this options attribute which is either an array or a function that returns an
+ array of objects or strings. If strings are used instead of objects
+ they will be converted into an object that has an id and text attribute equal
+ to the value of the string.
+
+
+
+
+
val
+
+
Gets or sets the selection. If the value parameter is not specified, the id attribute of the currently selected element is returned. If the value parameter is specified it will become the current selection.
+
+
+
Parameter
Type
Description
+
+
value (optional)
object
+
+
+
+
Single-Valued
Multi-Valued
+
+
+
Attached to select
+
Value of the value attribute of the option that should be selected
+
Array of values specified to the left. null for empty.
+
+
+
Attached to input[type=hidden]
+
An object representing the selection. Should at least contain an id key. The rest of the keys should be determined by the custom rendering function, the default rendering function only needs an additional text key
+
Array of objects specified to the left. null for empty.
+
-
-
Parameter
Type
Description
-
transport
function
Function that will be used to perform the ajax request. Must be parameter-compatible with $.ajax. Defaults to $.ajax if not specified.
- Allows the use of various ajax wrapper libraries such as: AjaxManager.
-
url
string
Ajax url
-
dataType
stringt
Data type for the request. ajax, jsonp, other formats supported by jquery
-
quietMillis
int
Number of milliseconds to wait for the user to stop typing before issuing the ajax request
-
data
function
- Function to generate query parameters for the ajax request.
-
data(term, page)
-
-
Parameter
Type
Description
-
term
string
Search term
-
page
int
1-based page number tracked by Select2 for use with infinite scrolling of results
-
<returns>
object
Object containing url paramters
-
-
-
results
function
- Function used to build the query results object from the ajax response
-
results(data, page)
-
-
Parameter
Type
Description
-
data
object
Retrieved data
-
page
int
Page number that was passed into the data function above
-
<returns>
object
Results object. See "options.callback" in the "query" function for format.
-
-
-
-
In order for this function to work Select2 should be attached to a input type='hidden' tag instead of a select.
-
-
data
array/object
- Options for the built in query function that works with arrays.
-
If this element contains an array, each element in the array must contain id and text keys
-
Alternatively, this element can be specified as an object in which results key must contain the data as an array and a text key can either be the name of the key in data items that contains text or a function that retrieves the text given a data element from the array
-
-
tags
array/function
- Puts Select2 into 'tagging'mode where the user can add new choices and pre-existing tags are provided via
- this options attribute which is either an array or a function that returns an
- array of objects or strings. If strings are used instead of objects
- they will be converted into an object that has an id and text attribute equal
- to the value of the string.
-
-
-
val
-
-
Gets or sets the selection. If the value parameter is not specified, the id attribute of the currently selected element is returned. If the value parameter is specified it will become the current selection.
-
-
-
Parameter
Type
Description
-
-
value (optional)
object
-
-
-
Single-Valued
Multi-Valued
-
-
-
Attached to select
-
Value of the value attribute of the option that should be selected
-
Array of values specified to the left. null for empty.
-
-
-
Attached to input[type=hidden]
-
An object representing the selection. Should at least contain an id key. The rest of the keys should be determined by the custom rendering function, the default rendering function only needs an additional text key
-
Array of objects specified to the left. null for empty.
-
+
+
+Example:
alert("Selected value is: "+$("#e8").select2("val")); $("#e8").select2("val", {id:"CA", text:"Califoria"});
-
+
+
destroy
+
+
Reverts changes to DOM done by Select2. Any selection done via Select2 will be preserved.
+
+
+
open
+
+
Opens the dropdown
+
+
close
+
+
Closes the dropdown
+
+
disable
+
+
Disables Select2. During this mode the user is not allowed to manipulate the selection.
+
+
enable
+
+
Enables Select2.
+
+
+
container
+
+
Retrieves the main container element that wraps all of DOM added by Select2
+ Example: console.log($("#tags").select2("container"));
+
+
onSortStart
+
+
Notifies Select2 that a drag and drop sorting operation has started. Select2 will hide all non-selection list items such as the search container, etc.
+ Example: $("#tags").select2("onSortStart");
+
+
onSortEnd
+
+
Notifies Select2 that a drag and drop sorting operation has finished. Select2 will re-display any elements previously hidden and update the selection of the element it is attached to.
+ Example: $("#tags").select2("onSortEnd");
+
-
-
- Example:
alert("Selected value is: "+$("#e8").select2("val")); $("#e8").select2("val", {id:"CA", text:"Califoria"});
+
+
Events
+
-
-
destroy
+
+
+
change
+
Fired when selection is changed.
+
This event is not fired when the selection is changed using Select2's val() method.
-
Reverts changes to DOM done by Select2. Any selection done via Select2 will be preserved.
-
-
-
open
-
-
Opens the dropdown
-
-
close
-
-
Closes the dropdown
+
-
-
Events
-
-
-
-
-
change
-
Fired when selection is changed.
-
This event is not fired when the selection is changed using Select2's val() method.
-
-
-
-
-
+
diff --git a/select2-1.0.html b/select2-1.0.html
index 1ff0b3af..b9a72ef4 100755
--- a/select2-1.0.html
+++ b/select2-1.0.html
@@ -2,6 +2,7 @@
layout: main
title: Select2 1.0
group: navigation
+version: 1.0
---
diff --git a/select2-2.1/README.md b/select2-2.1/README.md
new file mode 100755
index 00000000..222b3f3f
--- /dev/null
+++ b/select2-2.1/README.md
@@ -0,0 +1,60 @@
+Select2
+=================
+
+Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results. Look and feel of Select2 is based on the excellent [Chosen](http://harvesthq.github.com/chosen/) library.
+
+To get started -- checkout http://ivaynberg.github.com/select2!
+
+What Does Select2 Support That Chosen Does Not?
+-------------------------------------------------
+
+* Working with large datasets: Chosen requires the entire dataset to be loaded as `option` tags in the DOM, which limits
+it to working with small-ish datasets. Select2 uses a function to find results on-the-fly, which allows it to partially
+load results.
+* Paging of results: Since Select2 works with large datasets and only loads a small amount of matching results at a time
+it has to support paging. Select2 will call the search function when the user scrolls to the bottom of currently loaded
+result set allowing for the 'infinite scrolling' of results.
+* Custom markup for results: Chosen only supports rendering text results because that is the only markup supported by
+`option` tags. Select2 provides an extension point which can be used to produce any kind of markup to represent results.
+* Ability to add results on the fly: Select2 provides the ability to add results from the search term entered by the user, which allows it to be used for
+tagging.
+
+Browser Compatibility
+--------------------
+* IE 8+ (7 mostly works except for [issue with z-index](https://github.com/ivaynberg/select2/issues/37))
+* Chrome 8+
+* Firefox 3.5+
+* Safari 3+
+* Opera 10.6+
+
+Bug tracker
+-----------
+
+Have a bug? Please create an issue here on GitHub!
+
+https://github.com/ivaynberg/select2/issues
+
+
+Mailing list
+------------
+
+Have a question? Ask on our mailing list!
+
+select2@googlegroups.com
+
+https://groups.google.com/d/forum/select2
+
+
+Copyright and License
+---------------------
+
+Copyright 2012 Igor Vaynberg
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in
+compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is
+distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and limitations under the License.
\ No newline at end of file
diff --git a/select2-2.1/select2.css b/select2-2.1/select2.css
new file mode 100755
index 00000000..bbe5cfa6
--- /dev/null
+++ b/select2-2.1/select2.css
@@ -0,0 +1,456 @@
+/*
+Version: 2.1 Timestamp: Tue Jun 12 19:50:25 PDT 2012
+*/
+.select2-container {
+ position: relative;
+ display: inline-block;
+ /* inline-block for ie7 */
+ zoom: 1;
+ *display: inline;
+
+}
+
+.select2-container,
+.select2-drop,
+.select2-search,
+.select2-container .select2-search input{
+ /*
+ Force border-box so that % widths fit the parent
+ container without overlap because of margin/padding.
+
+ More Info : http://www.quirksmode.org/css/box.html
+ */
+ -moz-box-sizing: border-box; /* firefox */
+ -ms-box-sizing: border-box; /* ie */
+ -webkit-box-sizing: border-box; /* webkit */
+ -khtml-box-sizing: border-box; /* konqueror */
+ box-sizing: border-box; /* css3 */
+}
+
+.select2-container .select2-choice {
+ background-color: #fff;
+ background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #eeeeee), color-stop(0.5, white));
+ background-image: -webkit-linear-gradient(center bottom, #eeeeee 0%, white 50%);
+ background-image: -moz-linear-gradient(center bottom, #eeeeee 0%, white 50%);
+ background-image: -o-linear-gradient(bottom, #eeeeee 0%, #ffffff 50%);
+ background-image: -ms-linear-gradient(top, #eeeeee 0%, #ffffff 50%);
+ filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#eeeeee', endColorstr = '#ffffff', GradientType = 0);
+ background-image: linear-gradient(top, #eeeeee 0%, #ffffff 50%);
+ -webkit-border-radius: 4px;
+ -moz-border-radius: 4px;
+ border-radius: 4px;
+ -moz-background-clip: padding;
+ -webkit-background-clip: padding-box;
+ background-clip: padding-box;
+ border: 1px solid #aaa;
+ display: block;
+ overflow: hidden;
+ white-space: nowrap;
+ position: relative;
+ height: 26px;
+ line-height: 26px;
+ padding: 0 0 0 8px;
+ color: #444;
+ text-decoration: none;
+}
+
+.select2-container .select2-choice span {
+ margin-right: 26px;
+ display: block;
+ overflow: hidden;
+ white-space: nowrap;
+ -o-text-overflow: ellipsis;
+ -ms-text-overflow: ellipsis;
+ text-overflow: ellipsis;
+}
+
+.select2-container .select2-choice abbr {
+ display: block;
+ position: absolute;
+ right: 26px;
+ top: 8px;
+ width: 12px;
+ height: 12px;
+ font-size: 1px;
+ background: url(select2.png) right top no-repeat;
+ cursor: pointer;
+ text-decoration: none;
+ border:0;
+ outline: 0;
+}
+.select2-container .select2-choice abbr:hover {
+ background-position: right -11px;
+ cursor: pointer;
+}
+
+.select2-container .select2-drop {
+ background: #fff;
+ border: 1px solid #aaa;
+ border-top: 0;
+ position: absolute;
+ top: 100%;
+ -webkit-box-shadow: 0 4px 5px rgba(0, 0, 0, .15);
+ -moz-box-shadow: 0 4px 5px rgba(0, 0, 0, .15);
+ -o-box-shadow: 0 4px 5px rgba(0, 0, 0, .15);
+ box-shadow: 0 4px 5px rgba(0, 0, 0, .15);
+ z-index: 999;
+ width:100%;
+ margin-top:-1px;
+
+ -webkit-border-radius: 0 0 4px 4px;
+ -moz-border-radius: 0 0 4px 4px;
+ border-radius: 0 0 4px 4px;
+}
+
+.select2-container .select2-choice div {
+ -webkit-border-radius: 0 4px 4px 0;
+ -moz-border-radius: 0 4px 4px 0;
+ border-radius: 0 4px 4px 0;
+ -moz-background-clip: padding;
+ -webkit-background-clip: padding-box;
+ background-clip: padding-box;
+ background: #ccc;
+ background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #ccc), color-stop(0.6, #eee));
+ background-image: -webkit-linear-gradient(center bottom, #ccc 0%, #eee 60%);
+ background-image: -moz-linear-gradient(center bottom, #ccc 0%, #eee 60%);
+ background-image: -o-linear-gradient(bottom, #ccc 0%, #eee 60%);
+ background-image: -ms-linear-gradient(top, #cccccc 0%, #eeeeee 60%);
+ filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#cccccc', endColorstr = '#eeeeee', GradientType = 0);
+ background-image: linear-gradient(top, #cccccc 0%, #eeeeee 60%);
+ border-left: 1px solid #aaa;
+ position: absolute;
+ right: 0;
+ top: 0;
+ display: block;
+ height: 100%;
+ width: 18px;
+}
+
+.select2-container .select2-choice div b {
+ background: url('select2.png') no-repeat 0 1px;
+ display: block;
+ width: 100%;
+ height: 100%;
+}
+
+.select2-container .select2-search {
+ display: inline-block;
+ white-space: nowrap;
+ z-index: 1010;
+ min-height: 26px;
+ width: 100%;
+ margin: 0;
+ padding-left: 4px;
+ padding-right: 4px;
+}
+
+.select2-container .select2-search-hidden {
+ display: block;
+ position: absolute;
+ left: -10000px;
+}
+
+.select2-container .select2-search input {
+ background: #fff url('select2.png') no-repeat 100% -22px;
+ background: url('select2.png') no-repeat 100% -22px, -webkit-gradient(linear, left bottom, left top, color-stop(0.85, white), color-stop(0.99, #eeeeee));
+ background: url('select2.png') no-repeat 100% -22px, -webkit-linear-gradient(center bottom, white 85%, #eeeeee 99%);
+ background: url('select2.png') no-repeat 100% -22px, -moz-linear-gradient(center bottom, white 85%, #eeeeee 99%);
+ background: url('select2.png') no-repeat 100% -22px, -o-linear-gradient(bottom, white 85%, #eeeeee 99%);
+ background: url('select2.png') no-repeat 100% -22px, -ms-linear-gradient(top, #ffffff 85%, #eeeeee 99%);
+ background: url('select2.png') no-repeat 100% -22px, linear-gradient(top, #ffffff 85%, #eeeeee 99%);
+ padding: 4px 20px 4px 5px;
+ outline: 0;
+ border: 1px solid #aaa;
+ font-family: sans-serif;
+ font-size: 1em;
+ width:100%;
+ margin:0;
+ height:auto !important;
+ min-height: 26px;
+ -webkit-box-shadow: none;
+ -moz-box-shadow: none;
+ box-shadow: none;
+ border-radius: 0;
+ -moz-border-radius: 0;
+ -webkit-border-radius: 0;
+}
+
+.select2-container .select2-search input.select2-active {
+ background: #fff url('spinner.gif') no-repeat 100%;
+ background: url('spinner.gif') no-repeat 100%, -webkit-gradient(linear, left bottom, left top, color-stop(0.85, white), color-stop(0.99, #eeeeee));
+ background: url('spinner.gif') no-repeat 100%, -webkit-linear-gradient(center bottom, white 85%, #eeeeee 99%);
+ background: url('spinner.gif') no-repeat 100%, -moz-linear-gradient(center bottom, white 85%, #eeeeee 99%);
+ background: url('spinner.gif') no-repeat 100%, -o-linear-gradient(bottom, white 85%, #eeeeee 99%);
+ background: url('spinner.gif') no-repeat 100%, -ms-linear-gradient(top, #ffffff 85%, #eeeeee 99%);
+ background: url('spinner.gif') no-repeat 100%, linear-gradient(top, #ffffff 85%, #eeeeee 99%);
+}
+
+
+.select2-container-active .select2-choice,
+.select2-container-active .select2-choices {
+ -webkit-box-shadow: 0 0 5px rgba(0,0,0,.3);
+ -moz-box-shadow : 0 0 5px rgba(0,0,0,.3);
+ -o-box-shadow : 0 0 5px rgba(0,0,0,.3);
+ box-shadow : 0 0 5px rgba(0,0,0,.3);
+ border: 1px solid #5897fb;
+ outline: none;
+}
+
+.select2-dropdown-open .select2-choice {
+ border: 1px solid #aaa;
+ border-bottom-color: transparent;
+ -webkit-box-shadow: 0 1px 0 #fff inset;
+ -moz-box-shadow : 0 1px 0 #fff inset;
+ -o-box-shadow : 0 1px 0 #fff inset;
+ box-shadow : 0 1px 0 #fff inset;
+ background-color: #eee;
+ background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, white), color-stop(0.5, #eeeeee));
+ background-image: -webkit-linear-gradient(center bottom, white 0%, #eeeeee 50%);
+ background-image: -moz-linear-gradient(center bottom, white 0%, #eeeeee 50%);
+ background-image: -o-linear-gradient(bottom, white 0%, #eeeeee 50%);
+ background-image: -ms-linear-gradient(top, #ffffff 0%,#eeeeee 50%);
+ filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eeeeee',GradientType=0 );
+ background-image: linear-gradient(top, #ffffff 0%,#eeeeee 50%);
+ -webkit-border-bottom-left-radius : 0;
+ -webkit-border-bottom-right-radius: 0;
+ -moz-border-radius-bottomleft : 0;
+ -moz-border-radius-bottomright: 0;
+ border-bottom-left-radius : 0;
+ border-bottom-right-radius: 0;
+}
+
+.select2-dropdown-open .select2-choice div {
+ background: transparent;
+ border-left: none;
+}
+.select2-dropdown-open .select2-choice div b {
+ background-position: -18px 1px;
+}
+
+/* results */
+.select2-container .select2-results {
+ margin: 4px 4px 4px 0;
+ padding: 0 0 0 4px;
+ position: relative;
+ overflow-x: hidden;
+ overflow-y: auto;
+ max-height: 200px;
+}
+.select2-container .select2-results li {
+ line-height: 80%;
+ padding: 7px 7px 8px;
+ margin: 0;
+ list-style: none;
+ cursor: pointer;
+ display: list-item;
+}
+
+.select2-container .select2-results .select2-highlighted {
+ background: #3875d7;
+ color: #fff;
+}
+.select2-container .select2-results li em {
+ background: #feffde;
+ font-style: normal;
+}
+.select2-container .select2-results .select2-highlighted em {
+ background: transparent;
+}
+.select2-container .select2-results .select2-no-results {
+ background: #f4f4f4;
+ display: list-item;
+}
+
+/*
+disabled look for already selected choices in the results dropdown
+.select2-container .select2-results .select2-disabled.select2-highlighted {
+ color: #666;
+ background: #f4f4f4;
+ display: list-item;
+ cursor: default;
+}
+.select2-container .select2-results .select2-disabled {
+ background: #f4f4f4;
+ display: list-item;
+ cursor: default;
+}
+*/
+.select2-container .select2-results .select2-disabled {
+ display: none;
+}
+
+.select2-more-results.select2-active {
+ background: #f4f4f4 url('spinner.gif') no-repeat 100%;
+}
+
+.select2-more-results {
+ background: #f4f4f4;
+ display: list-item;
+}
+
+/* disabled styles */
+
+.select2-container.select2-container-disabled .select2-choice {
+ background-color: #f4f4f4;
+ background-image: none;
+ border: 1px solid #ddd;
+ cursor: default;
+}
+
+.select2-container.select2-container-disabled .select2-choice div {
+ background-color: #f4f4f4;
+ background-image: none;
+ border-left: 0;
+}
+
+
+/* multiselect */
+
+.select2-container-multi .select2-choices {
+ background-color: #fff;
+ background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(1%, #eeeeee), color-stop(15%, #ffffff));
+ background-image: -webkit-linear-gradient(top, #eeeeee 1%, #ffffff 15%);
+ background-image: -moz-linear-gradient(top, #eeeeee 1%, #ffffff 15%);
+ background-image: -o-linear-gradient(top, #eeeeee 1%, #ffffff 15%);
+ background-image: -ms-linear-gradient(top, #eeeeee 1%, #ffffff 15%);
+ background-image: linear-gradient(top, #eeeeee 1%, #ffffff 15%);
+ border: 1px solid #aaa;
+ margin: 0;
+ padding: 0;
+ cursor: text;
+ overflow: hidden;
+ height: auto !important;
+ height: 1%;
+ position: relative;
+}
+
+.select2-container-multi .select2-drop {
+ margin-top:0;
+}
+
+.select2-container-multi .select2-choices {
+ min-height: 26px;
+}
+
+.select2-container-multi.select2-container-active .select2-choices {
+ -webkit-box-shadow: 0 0 5px rgba(0,0,0,.3);
+ -moz-box-shadow : 0 0 5px rgba(0,0,0,.3);
+ -o-box-shadow : 0 0 5px rgba(0,0,0,.3);
+ box-shadow : 0 0 5px rgba(0,0,0,.3);
+ border: 1px solid #5897fb;
+ outline: none;
+}
+.select2-container-multi .select2-choices li {
+ float: left;
+ list-style: none;
+}
+.select2-container-multi .select2-choices .select2-search-field {
+ white-space: nowrap;
+ margin: 0;
+ padding: 0;
+}
+
+.select2-container-multi .select2-choices .select2-search-field input {
+ color: #666;
+ background: transparent !important;
+ font-family: sans-serif;
+ font-size: 100%;
+ height: 15px;
+ padding: 5px;
+ margin: 1px 0;
+ outline: 0;
+ border: 0;
+ -webkit-box-shadow: none;
+ -moz-box-shadow : none;
+ -o-box-shadow : none;
+ box-shadow : none;
+}
+
+
+.select2-default {
+ color: #999 !important;
+}
+
+.select2-container-multi .select2-choices .select2-search-choice {
+ -webkit-border-radius: 3px;
+ -moz-border-radius : 3px;
+ border-radius : 3px;
+ -moz-background-clip : padding;
+ -webkit-background-clip: padding-box;
+ background-clip : padding-box;
+ background-color: #e4e4e4;
+ filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f4f4f4', endColorstr='#eeeeee', GradientType=0 );
+ background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(20%, #f4f4f4), color-stop(50%, #f0f0f0), color-stop(52%, #e8e8e8), color-stop(100%, #eeeeee));
+ background-image: -webkit-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eeeeee 100%);
+ background-image: -moz-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eeeeee 100%);
+ background-image: -o-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eeeeee 100%);
+ background-image: -ms-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eeeeee 100%);
+ background-image: linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eeeeee 100%);
+ -webkit-box-shadow: 0 0 2px #ffffff inset, 0 1px 0 rgba(0,0,0,0.05);
+ -moz-box-shadow : 0 0 2px #ffffff inset, 0 1px 0 rgba(0,0,0,0.05);
+ box-shadow : 0 0 2px #ffffff inset, 0 1px 0 rgba(0,0,0,0.05);
+ color: #333;
+ border: 1px solid #aaaaaa;
+ line-height: 13px;
+ padding: 3px 5px 3px 18px;
+ margin: 3px 0 3px 5px;
+ position: relative;
+ cursor: default;
+}
+.select2-container-multi .select2-choices .select2-search-choice span {
+ cursor: default;
+}
+.select2-container-multi .select2-choices .select2-search-choice-focus {
+ background: #d4d4d4;
+}
+
+.select2-search-choice-close {
+ display: block;
+ position: absolute;
+ right: 3px;
+ top: 4px;
+ width: 12px;
+ height: 13px;
+ font-size: 1px;
+ background: url(select2.png) right top no-repeat;
+ outline: none;
+}
+
+.select2-container-multi .select2-search-choice-close {
+ left: 3px;
+}
+
+
+.select2-container-multi .select2-choices .select2-search-choice .select2-search-choice-close:hover {
+ background-position: right -11px;
+}
+.select2-container-multi .select2-choices .select2-search-choice-focus .select2-search-choice-close {
+ background-position: right -11px;
+}
+
+
+.select2-container-multi .select2-results {
+ margin: -1px 0 0;
+ padding: 0;
+}
+
+/* disabled styles */
+
+.select2-container-multi.select2-container-disabled .select2-choices{
+ background-color: #f4f4f4;
+ background-image: none;
+ border: 1px solid #ddd;
+ cursor: default;
+}
+
+.select2-container-multi.select2-container-disabled .select2-choices .select2-search-choice {
+ background-image: none;
+ background-color: #f4f4f4;
+ border: 1px solid #ddd;
+ padding: 3px 5px 3px 5px;
+}
+
+.select2-container-multi.select2-container-disabled .select2-choices .select2-search-choice .select2-search-choice-close {
+ display: none;
+}
+/* end multiselect */
diff --git a/select2-2.1/select2.js b/select2-2.1/select2.js
new file mode 100755
index 00000000..e9490c5e
--- /dev/null
+++ b/select2-2.1/select2.js
@@ -0,0 +1,1579 @@
+/*
+ Copyright 2012 Igor Vaynberg
+
+ Version: 2.1 Timestamp: Tue Jun 12 19:50:25 PDT 2012
+
+ Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in
+ compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software distributed under the License is
+ distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and limitations under the License.
+ */
+(function ($, undefined) {
+ "use strict";
+ /*global document, window, jQuery, console */
+
+ if (window.Select2 !== undefined) {
+ return;
+ }
+
+ var KEY, AbstractSelect2, SingleSelect2, MultiSelect2;
+
+ KEY = {
+ TAB: 9,
+ ENTER: 13,
+ ESC: 27,
+ SPACE: 32,
+ LEFT: 37,
+ UP: 38,
+ RIGHT: 39,
+ DOWN: 40,
+ SHIFT: 16,
+ CTRL: 17,
+ ALT: 18,
+ PAGE_UP: 33,
+ PAGE_DOWN: 34,
+ HOME: 36,
+ END: 35,
+ BACKSPACE: 8,
+ DELETE: 46,
+ isArrow: function (k) {
+ k = k.which ? k.which : k;
+ switch (k) {
+ case KEY.LEFT:
+ case KEY.RIGHT:
+ case KEY.UP:
+ case KEY.DOWN:
+ return true;
+ }
+ return false;
+ },
+ isControl: function (k) {
+ k = k.which ? k.which : k;
+ switch (k) {
+ case KEY.SHIFT:
+ case KEY.CTRL:
+ case KEY.ALT:
+ return true;
+ }
+ return false;
+ },
+ isFunctionKey: function (k) {
+ k = k.which ? k.which : k;
+ return k >= 112 && k <= 123;
+ }
+ };
+
+ function indexOf(value, array) {
+ var i = 0, l = array.length, v;
+
+ if (typeof value === "undefined") {
+ return -1;
+ }
+
+ if (value.constructor === String) {
+ for (; i < l; i = i + 1) if (value.localeCompare(array[i]) === 0) return i;
+ } else {
+ for (; i < l; i = i + 1) {
+ v = array[i];
+ if (v.constructor === String) {
+ if (v.localeCompare(value) === 0) return i;
+ } else {
+ if (v === value) return i;
+ }
+ }
+ }
+ return -1;
+ }
+
+ /**
+ * Compares equality of a and b taking into account that a and b may be strings, in which case localCompare is used
+ * @param a
+ * @param b
+ */
+ function equal(a, b) {
+ if (a === b) return true;
+ if (a === undefined || b === undefined) return false;
+ if (a === null || b === null) return false;
+ if (a.constructor === String) return a.localeCompare(b) === 0;
+ if (b.constructor === String) return b.localeCompare(a) === 0;
+ return false;
+ }
+
+ /**
+ * Splits the string into an array of values, trimming each value. An empty array is returned for nulls or empty
+ * strings
+ * @param string
+ * @param separator
+ */
+ function splitVal(string, separator) {
+ var val, i, l;
+ if (string === null || string.length < 1) return [];
+ val = string.split(separator);
+ for (i = 0, l = val.length; i < l; i = i + 1) val[i] = $.trim(val[i]);
+ return val;
+ }
+
+ function getSideBorderPadding(element) {
+ return element.outerWidth() - element.width();
+ }
+
+ function installKeyUpChangeEvent(element) {
+ element.bind("keydown", function () {
+ element.data("keyup-change-value", element.val());
+ });
+ element.bind("keyup", function () {
+ if (element.val() !== element.data("keyup-change-value")) {
+ element.trigger("keyup-change");
+ }
+ });
+ }
+
+ /**
+ * filters mouse events so an event is fired only if the mouse moved.
+ *
+ * filters out mouse events that occur when mouse is stationary but
+ * the elements under the pointer are scrolled.
+ */
+ $(document).delegate("*", "mousemove", function (e) {
+ $(document).data("select2-lastpos", {x: e.pageX, y: e.pageY});
+ });
+ function installFilteredMouseMove(element) {
+ element.bind("mousemove", function (e) {
+ var lastpos = $(document).data("select2-lastpos");
+ if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
+ $(e.target).trigger("mousemove-filtered", e);
+ }
+ });
+ }
+
+ /**
+ * Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
+ * within the last quietMillis milliseconds.
+ *
+ * @param quietMillis number of milliseconds to wait before invoking fn
+ * @param fn function to be debounced
+ * @return debounced version of fn
+ */
+ function debounce(quietMillis, fn) {
+ var timeout;
+ return function () {
+ window.clearTimeout(timeout);
+ timeout = window.setTimeout(fn, quietMillis);
+ };
+ }
+
+ function installDebouncedScroll(threshold, element) {
+ var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
+ element.bind("scroll", function (e) {
+ if (indexOf(e.target, element.get()) >= 0) notify(e);
+ });
+ }
+
+ function killEvent(event) {
+ event.preventDefault();
+ event.stopPropagation();
+ }
+
+ function measureTextWidth(e) {
+ var sizer, width;
+ sizer = $("").css({
+ position: "absolute",
+ left: "-1000px",
+ top: "-1000px",
+ display: "none",
+ fontSize: e.css("fontSize"),
+ fontFamily: e.css("fontFamily"),
+ fontStyle: e.css("fontStyle"),
+ fontWeight: e.css("fontWeight"),
+ letterSpacing: e.css("letterSpacing"),
+ textTransform: e.css("textTransform"),
+ whiteSpace: "nowrap"
+ });
+ sizer.text(e.val());
+ $("body").append(sizer);
+ width = sizer.width();
+ sizer.remove();
+ return width;
+ }
+
+ /**
+ * Produces an ajax-based query function
+ *
+ * @param options object containing configuration paramters
+ * @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
+ * @param options.url url for the data
+ * @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
+ * @param options.dataType request data type: ajax, jsonp, other datatatypes supported by jQuery's $.ajax function or the transport function if specified
+ * @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
+ * @param options.results a function(remoteData, pageNumber) that converts data returned form the remote request to the format expected by Select2.
+ * The expected format is an object containing the following keys:
+ * results array of objects that will be used as choices
+ * more (optional) boolean indicating whether there are more results available
+ * Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
+ */
+ function ajax(options) {
+ var timeout, // current scheduled but not yet executed request
+ requestSequence = 0, // sequence used to drop out-of-order responses
+ handler = null,
+ quietMillis = options.quietMillis || 100;
+
+ return function (query) {
+ window.clearTimeout(timeout);
+ timeout = window.setTimeout(function () {
+ requestSequence += 1; // increment the sequence
+ var requestNumber = requestSequence, // this request's sequence number
+ data = options.data, // ajax data function
+ transport = options.transport || $.ajax;
+
+ data = data.call(this, query.term, query.page, query.context);
+
+ if( null !== handler){
+ handler.abort();
+ }
+ handler = transport.call(null, {
+ url: options.url,
+ dataType: options.dataType,
+ data: data,
+ success: function (data) {
+ if (requestNumber < requestSequence) {
+ return;
+ }
+ // TODO 3.0 - replace query.page with query so users have access to term, page, etc.
+ var results = options.results(data, query.page);
+ query.callback(results);
+ }
+ });
+ }, quietMillis);
+ };
+ }
+
+ /**
+ * Produces a query function that works with a local array
+ *
+ * @param options object containing configuration parameters. The options parameter can either be an array or an
+ * object.
+ *
+ * If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
+ *
+ * If the object form is used ti is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
+ * an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
+ * key can either be a String in which case it is expected that each element in the 'data' array has a key with the
+ * value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
+ * the text.
+ */
+ function local(options) {
+ var data = options, // data elements
+ text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search
+
+ if (!$.isArray(data)) {
+ text = data.text;
+ // if text is not a function we assume it to be a key name
+ if (!$.isFunction(text)) text = function (item) { return item[data.text]; };
+ data = data.results;
+ }
+
+ return function (query) {
+ var t = query.term, filtered = {};
+ if (t === "") {
+ query.callback({results: data});
+ return;
+ }
+ filtered.results = $(data)
+ .filter(function () {return query.matcher(t, text(this));})
+ .get();
+ query.callback(filtered);
+ };
+ }
+
+ // TODO javadoc
+ function tags(data) {
+ // TODO even for a function we should probably return a wrapper that does the same object/string check as
+ // the function for arrays. otherwise only functions that return objects are supported.
+ if ($.isFunction(data)) {
+ return data;
+ }
+
+ // if not a function we assume it to be an array
+
+ return function (query) {
+ var t = query.term, filtered = {results: []};
+ $(data).each(function () {
+ var isObject = this.text !== undefined,
+ text = isObject ? this.text : this;
+ if (t === "" || query.matcher(t, text)) {
+ filtered.results.push(isObject ? this : {id: this, text: this});
+ }
+ });
+ query.callback(filtered);
+ };
+ }
+
+ /**
+ * blurs any Select2 container that has focus when an element outside them was clicked or received focus
+ */
+ $(document).ready(function () {
+ $(document).delegate("*", "mousedown focusin touchend", function (e) {
+ var target = $(e.target).closest("div.select2-container").get(0);
+ $(document).find("div.select2-container-active").each(function () {
+ if (this !== target) $(this).data("select2").blur();
+ });
+ });
+ });
+
+ /**
+ * Creates a new class
+ *
+ * @param superClass
+ * @param methods
+ */
+ function clazz(SuperClass, methods) {
+ var constructor = function () {};
+ constructor.prototype = new SuperClass;
+ constructor.prototype.constructor = constructor;
+ constructor.prototype.parent = SuperClass.prototype;
+ constructor.prototype = $.extend(constructor.prototype, methods);
+ return constructor;
+ }
+
+ AbstractSelect2 = clazz(Object, {
+
+ bind: function (func) {
+ var self = this;
+ return function () {
+ func.apply(self, arguments);
+ };
+ },
+
+ init: function (opts) {
+ var results, search, resultsSelector = ".select2-results";
+
+ // prepare options
+ this.opts = opts = this.prepareOpts(opts);
+
+ this.id=opts.id;
+
+ // destroy if called on an existing component
+ if (opts.element.data("select2") !== undefined &&
+ opts.element.data("select2") !== null) {
+ this.destroy();
+ }
+
+ this.enabled=true;
+ this.container = this.createContainer();
+
+ if (opts.element.attr("class") !== undefined) {
+ this.container.addClass(opts.element.attr("class"));
+ }
+
+ // swap container for the element
+ this.opts.element
+ .data("select2", this)
+ .hide()
+ .after(this.container);
+ this.container.data("select2", this);
+
+ this.dropdown = this.container.find(".select2-drop");
+ this.results = results = this.container.find(resultsSelector);
+ this.search = search = this.container.find("input[type=text]");
+
+ this.resultsPage = 0;
+ this.context = null;
+
+ // initialize the container
+ this.initContainer();
+
+ installFilteredMouseMove(this.results);
+ this.container.delegate(resultsSelector, "mousemove-filtered", this.bind(this.highlightUnderEvent));
+
+ installDebouncedScroll(80, this.results);
+ this.container.delegate(resultsSelector, "scroll-debounced", this.bind(this.loadMoreIfNeeded));
+
+ // if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
+ if ($.fn.mousewheel) {
+ results.mousewheel(function (e, delta, deltaX, deltaY) {
+ var top = results.scrollTop(), height;
+ if (deltaY > 0 && top - deltaY <= 0) {
+ results.scrollTop(0);
+ killEvent(e);
+ } else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
+ results.scrollTop(results.get(0).scrollHeight - results.height());
+ killEvent(e);
+ }
+ });
+ }
+
+ installKeyUpChangeEvent(search);
+ search.bind("keyup-change", this.bind(this.updateResults));
+ search.bind("focus", function () { search.addClass("select2-focused");});
+ search.bind("blur", function () { search.removeClass("select2-focused");});
+
+ this.container.delegate(resultsSelector, "click", this.bind(function (e) {
+ if ($(e.target).closest(".select2-result:not(.select2-disabled)").length > 0) {
+ this.highlightUnderEvent(e);
+ this.selectHighlighted(e);
+ } else {
+ killEvent(e);
+ this.focusSearch();
+ }
+ }));
+
+ if ($.isFunction(this.opts.initSelection)) {
+ // initialize selection based on the current value of the source element
+ this.initSelection();
+
+ // if the user has provided a function that can set selection based on the value of the source element
+ // we monitor the change event on the element and trigger it, allowing for two way synchronization
+ this.monitorSource();
+ }
+
+ if (opts.element.is(":disabled")) this.disable();
+ },
+
+ destroy: function () {
+ var select2 = this.opts.element.data("select2");
+ if (select2 !== undefined) {
+ select2.container.remove();
+ select2.opts.element
+ .removeData("select2")
+ .unbind(".select2")
+ .show();
+ }
+ },
+
+ prepareOpts: function (opts) {
+ var element, select, idKey;
+
+ element = opts.element;
+
+ if (element.get(0).tagName.toLowerCase() === "select") {
+ this.select = select = opts.element;
+ }
+
+ if (select) {
+ // these options are not allowed when attached to a select because they are picked up off the element itself
+ $.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
+ if (this in opts) {
+ throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a