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jQuery Tag Handler v1.0.1
Copyright (C) 2010 Mark Jubenville
Mark Jubenville - [email protected]
http://ioncache.github.com/Tag-Handler

Development time supported by:
Raybec Communications
http://www.raybec.com
http://www.mysaleslink.com

Modified by Javier Fernandez Escribano - [email protected]
Added autocomplete queries as the user writes

Development time supported by:
Tourist Eye
http://www.touristeye.com

Based heavily on:
Tag it! by Levy Carneiro Jr (http://levycarneiro.com/)
http://levycarneiro.com/projects/tag-it/example.html
http://github.com/levycarneiro/tag-it
http://plugins.jquery.com/project/tag-it

Tag icons/cursors converted from:
From the famfamfam.com Silk icon set:
http://www.famfamfam.com/lab/icons/silk/

Loader image created at:
Preloaders.net
http://preloaders.net/

------------------------------------------------------------------------------
Description 
------------------------------------------------------------------------------

Tag Handler is a jQuery plugin used for managing tag-type metadata. 

------------------------------------------------------------------------------
Basic Usage Instructions
------------------------------------------------------------------------------

* Tag Handler must be attached to one or more <ul> tags in your HTML.

* To add a tag, click on the tag box, type in a name, and hit enter or comma.

* Tags may be removed from the tag box by hitting backspace inside the box or
  by clicking on the tag.

* The list of tags may be initialized in 1 of 3 ways:

     1. By passing arrays of tag names as options to the plugin
        ("availableTags" and "assignedTags"); or,

     2. By supplying a "getURL" for the tags to be retrieved via AJAX.

        When using this method, the server must supply a JSON formatted array
        named "availableTags" and optionally an additional array named
        "assignedTags".
     
     3. By supplying a "getURL" and initLoad: false.

        When using this method, it will get the "assignedTags" from the array as in 
        method 1. When the user writes a tag, it will query the server searching for
        similar tags.        
     
  
  Either way, the information from these 3 methods will be used in the
  following manner:

  availableTags: each item in this array will populate the autocomplete
  drop-down list

  assignedTags: each item this array will become a tag in the tag box

* Tags may be sent back to the server by supplying an "updateURL". In this case,
  an array will be sent back to the server named "tags".

* You can define whether the user can create new tags or select tags only.

* You can define if the user can edit the tags.

* A sample CSS file is included that can be used to help with formatting tags.


------------------------------------------------------------------------------
Plugin Examples
------------------------------------------------------------------------------

Example 1: The Tag Handler will be initialized with no options and no default
           tags:

    $("#basic_tag_handler").tagHandler();

Example 2: The Tag Handler will be initialized with preset tags from the
           assignedTags and availableTags arrays, and autocomplete witll be
           turned on:

    $("#array_tag_handler").tagHandler({
        assignedTags: [ 'Perl' ],
        availableTags: [ 'C', 'C++', 'C#', 'Java', 'Perl', 'PHP', 'Python' ],
        autocomplete: true
    });

Example 3: The Tag Handler will be initialized and pull data via ajax, also
           sending some data to the server:

    $("#ajaxget_tag_handler").tagHandler({
        getData: { id: 'user123', type: 'user' },
        getURL: '/ajaxtest/get',
        autocomplete: true
    });

Example 4: Same as Example 3, but a different user is set in the getData /
           UpdateData options and now the tags will save when clicking the save
           button:
           
    $("#ajaxupdate_tag_handler").tagHandler({
        getData: { id: 'user234', type: 'user' },
        getURL: '/ajaxtest/get',
        updateData: { id: 'user234', type: 'user' },
        updateURL: '/ajaxtest/update',
        autocomplete: true
    });

Example 5: Same as Example 4, but autoUpdate is true, tags will save
           automatically (no save button will be shown):

    $("#ajaxautoupdate_tag_handler").tagHandler({
        getData: { id: 'user234', type: 'user' },
        getURL: '/ajaxtest/get',
        updateData: { id: 'user234', type: 'user' },
        updateURL: '/ajaxtest/update',
        autocomplete: true,
        autoUpdate: true
    });

Example 6: The Tag Handler will be initialized but it will request the tag list when the user writes more than 2 chars, also sending some data to the server:

    $("#ajaxget_tag_handler").tagHandler({
        getData: { id: 'user123', type: 'user' },
        initLoad: false,
        getURL: '/ajaxtest/get',
        autocomplete: true,
        minChars: 2
    });

Example 7: Same as example 6, but the user cannot create new tags:

    $("#ajaxget_tag_handler").tagHandler({
        getData: { id: 'user123', type: 'user' },
        initLoad: false,
        getURL: '/ajaxtest/get',
        autocomplete: true,
        minChars: 2,
        allowAdd: false
    });
    
        
------------------------------------------------------------------------------
Plugin Options
------------------------------------------------------------------------------

Tag data specific options:
--------------------------

Option          Description                                     Default Value
--------------  ----------------------------------------------  --------------
assignedTags    array to pass a list of already assigned tags   []
availableTags   array to pass a list of all available tags      []
getData         data field with info for getURL                 ''
getURL          URL for retrieving tag lists via ajax           ''
initLoad:       indicates if load all tags at init              true
updatetData     data field with additional info for updtateURL  ''
updateURL       URL for saving tags via ajax                    ''

Miscellaneous options:
----------------------

Option          Description                                     Default Value
--------------  ----------------------------------------------  --------------
allowEdit       indicates whether the tag list is editable      true
allowAdd        indicates whether the user can add new tags     true
autocomplete    requires jqueryui autocomplete plugin           false
autoUpdate      indicates whether updating occurs automatically false
                whenever a tag is added/deleted - if set true,
                the save button will not be shown
className       base class name that will be added to the tag   'tagHandler'
                container 
queryname       variable name to query the server               'q'
debug           will turn on some console logging debug info    false
delimiter       extra delimiter to use to separate tags         ''
                note 'enter' and 'comma' are always allowed 
sortTags        sets sorting of tag names alphabetically        true
minChars        minimum number of chars to query the server     0
msgNoNewTag     message shown when the user cannot add a new    "You don't have enough points
                tag                                              to create a new tag"
msgError        message shown when there is an error loading    "There was an error getting
                the tags                                         the tag list."

------------------------------------------------------------------------------
License
------------------------------------------------------------------------------

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see < http://www.gnu.org/licenses/ >.

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Tag Handler is a jQuery plugin used for managing tag-type metadata.

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