/**
* @output wp-includes/js/wp-lists.js
*/

/* global ajaxurl, wpAjax */

/**
* @param {jQuery} $ jQuery object.
*/
( function( $ ) {
var functions = {
add: 'ajaxAdd',
del: 'ajaxDel',
dim: 'ajaxDim',
process: 'process',
recolor: 'recolor'
}, wpList;

/**
* @namespace
*/
wpList = {

/**
* @member {object}
*/
settings: {

/**
* URL for Ajax requests.
*
* @member {string}
*/
url: ajaxurl,

/**
* The HTTP method to use for Ajax requests.
*
* @member {string}
*/
type: 'POST',

/**
* ID of the element the parsed Ajax response will be stored in.
*
* @member {string}
*/
response: 'ajax-response',

/**
* The type of list.
*
* @member {string}
*/
what: '',

/**
* CSS class name for alternate styling.
*
* @member {string}
*/
alt: 'alternate',

/**
* Offset to start alternate styling from.
*
* @member {number}
*/
altOffset: 0,

/**
* Color used in animation when adding an element.
*
* Can be 'none' to disable the animation.
*
* @member {string}
*/
addColor: '#ffff33',

/**
* Color used in animation when deleting an element.
*
* Can be 'none' to disable the animation.
*
* @member {string}
*/
delColor: '#faafaa',

/**
* Color used in dim add animation.
*
* Can be 'none' to disable the animation.
*
* @member {string}
*/
dimAddColor: '#ffff33',

/**
* Color used in dim delete animation.
*
* Can be 'none' to disable the animation.
*
* @member {string}
*/
dimDelColor: '#ff3333',

/**
* Callback that's run before a request is made.
*
* @callback wpList~confirm
* @param {object} this
* @param {HTMLElement} list The list DOM element.
* @param {object} settings Settings for the current list.
* @param {string} action The type of action to perform: 'add', 'delete', or 'dim'.
* @param {string} backgroundColor Background color of the list's DOM element.
* @return {boolean} Whether to proceed with the action or not.
*/
confirm: null,

/**
* Callback that's run before an item gets added to the list.
*
* Allows to cancel the request.
*
* @callback wpList~addBefore
* @param {object} settings Settings for the Ajax request.
* @return {object|boolean} Settings for the Ajax request or false to abort.
*/
addBefore: null,

/**
* Callback that's run after an item got added to the list.
*
* @callback wpList~addAfter
* @param {XML} returnedResponse Raw response returned from the server.
* @param {object} settings Settings for the Ajax request.
* @param {jqXHR} settings.xml jQuery XMLHttpRequest object.
* @param {string} settings.status Status of the request: 'success', 'notmodified', 'nocontent', 'error',
* 'timeout', 'abort', or 'parsererror'.
* @param {object} settings.parsed Parsed response object.
*/
addAfter: null,

/**
* Callback that's run before an item gets deleted from the list.
*
* Allows to cancel the request.
*
* @callback wpList~delBefore
* @param {object} settings Settings for the Ajax request.
* @param {HTMLElement} list The list DOM element.
* @return {object|boolean} Settings for the Ajax request or false to abort.
*/
delBefore: null,

/**
* Callback that's run after an item got deleted from the list.
*
* @callback wpList~delAfter
* @param {XML} returnedResponse Raw response returned from the server.
* @param {object} settings Settings for the Ajax request.
* @param {jqXHR} settings.xml jQuery XMLHttpRequest object.
* @param {string} settings.status Status of the request: 'success', 'notmodified', 'nocontent', 'error',
* 'timeout', 'abort', or 'parsererror'.
* @param {object} settings.parsed Parsed response object.
*/
delAfter: null,

/**
* Callback that's run before an item gets dim'd.
*
* Allows to cancel the request.
*
* @callback wpList~dimBefore
* @param {object} settings Settings for the Ajax request.
* @return {object|boolean} Settings for the Ajax request or false to abort.
*/
dimBefore: null,

/**
* Callback that's run after an item got dim'd.
*
* @callback wpList~dimAfter
* @param {XML} returnedResponse Raw response returned from the server.
* @param {object} settings Settings for the Ajax request.
* @param {jqXHR} settings.xml jQuery XMLHttpRequest object.
* @param {string} settings.status Status of the request: 'success', 'notmodified', 'nocontent', 'error',
* 'timeout', 'abort', or 'parsererror'.
* @param {object} settings.parsed Parsed response object.
*/
dimAfter: null
},

/**
* Finds a nonce.
*
* 1. Nonce in settings.
* 2. `_ajax_nonce` value in element's href attribute.
* 3. `_ajax_nonce` input field that is a descendant of element.
* 4. `_wpnonce` value in element's href attribute.
* 5. `_wpnonce` input field that is a descendant of element.
* 6. 0 if none can be found.
*
* @param {jQuery} element Element that triggered the request.
* @param {Object} settings Settings for the Ajax request.
* @return {string|number} Nonce
*/
nonce: function( element, settings ) {
var url = wpAjax.unserialize( element.attr( 'href' ) ),
$element = $( '#' + settings.element );

return settings.nonce || url._ajax_nonce || $element.find( 'input[name="_ajax_nonce"]' ).val() || url._wpnonce || $element.find( 'input[name="_wpnonce"]' ).val() || 0;
},

/**
* Extract list item data from a DOM element.
*
* Example 1: data-wp-lists="delete:the-comment-list:comment-{comment_ID}:66cc66:unspam=1"
* Example 2: data-wp-lists="dim:the-comment-list:comment-{comment_ID}:unapproved:e7e7d3:e7e7d3:new=approved"
*
* Returns an unassociative array with the following data:
* data[0] - Data identifier: 'list', 'add', 'delete', or 'dim'.
* data[1] - ID of the corresponding list. If data[0] is 'list', the type of list ('comment', 'category', etc).
* data[2] - ID of the parent element of all inputs necessary for the request.
* data[3] - Hex color to be used in this request. If data[0] is 'dim', dim class.
* data[4] - Additional arguments in query syntax that are added to the request. Example: 'post_id=1234'.
* If data[0] is 'dim', dim add color.
* data[5] - Only available if data[0] is 'dim', dim delete color.
* data[6] - Only available if data[0] is 'dim', additional arguments in query syntax that are added to the request.
*
* Result for Example 1:
* data[0] - delete
* data[1] - the-comment-list
* data[2] - comment-{comment_ID}
* data[3] - 66cc66
* data[4] - unspam=1
*
* @param {HTMLElement} element The DOM element.
* @param {string} type The type of data to look for: 'list', 'add', 'delete', or 'dim'.
* @return {Array} Extracted list item data.
*/
parseData: function( element, type ) {
var data = [], wpListsData;

try {
wpListsData = $( element ).data( 'wp-lists' ) || '';
wpListsData = wpListsData.match( new RegExp( type + ':[\\S]+' ) );

if ( wpListsData ) {
data = wpListsData[0].split( ':' );
}
} catch ( error ) {}

return data;
},

/**
* Calls a confirm callback to verify the action that is about to be performed.
*
* @param {HTMLElement} list The DOM element.
* @param {Object} settings Settings for this list.
* @param {string} action The type of action to perform: 'add', 'delete', or 'dim'.
* @return {Object|boolean} Settings if confirmed, false if not.
*/
pre: function( list, settings, action ) {
var $element, backgroundColor, confirmed;

settings = $.extend( {}, this.wpList.settings, {
element: null,
nonce: 0,
target: list.get( 0 )
}, settings || {} );

if ( typeof settings.confirm === 'function' ) {
$element = $( '#' + settings.element );

if ( 'add' !== action ) {
backgroundColor = $element.css( 'backgroundColor' );
$element.css( 'backgroundColor', '#ff9966' );
}

confirmed = settings.confirm.call( this, list, settings, action, backgroundColor );

if ( 'add' !== action ) {
$element.css( 'backgroundColor', backgroundColor );
}

if ( ! confirmed ) {
return false;
}
}

return settings;
},

/**
* Adds an item to the list via Ajax.
*
* @param {HTMLElement} element The DOM element.
* @param {Object} settings Settings for this list.
* @return {boolean} Whether the item was added.
*/
ajaxAdd: function( element, settings ) {
var list = this,
$element = $( element ),
data = wpList.parseData( $element, 'add' ),
formValues, formData, parsedResponse, returnedResponse;

settings = settings || {};
settings = wpList.pre.call( list, $element, settings, 'add' );

settings.element = data[2] || $element.prop( 'id' ) || settings.element || null;
settings.addColor = data[3] ? '#' + data[3] : settings.addColor;

if ( ! settings ) {
return false;
}

if ( ! $element.is( '[id="' + settings.element + '-submit"]' ) ) {
return ! wpList.add.call( list, $element, settings );
}

if ( ! settings.element ) {
return true;
}

settings.action = 'add-' + settings.what;
settings.nonce = wpList.nonce( $element, settings );

if ( ! wpAjax.validateForm( '#' + settings.element ) ) {
return false;
}

settings.data = $.param( $.extend( {
_ajax_nonce: settings.nonce,
action: settings.action
}, wpAjax.unserialize( data[4] || '' ) ) );

formValues = $( '#' + settings.element + ' :input' ).not( '[name="_ajax_nonce"], [name="_wpnonce"], [name="action"]' );
formData = typeof formValues.fieldSerialize === 'function' ? formValues.fieldSerialize() : formValues.serialize();

if ( formData ) {
settings.data += '&' + formData;
}

if ( typeof settings.addBefore === 'function' ) {
settings = settings.addBefore( settings );

if ( ! settings ) {
return true;
}
}

if ( ! settings.data.match( /_ajax_nonce=[a-f0-9]+/ ) ) {
return true;
}

settings.success = function( response ) {
parsedResponse = wpAjax.parseAjaxResponse( response, settings.response, settings.element );
returnedResponse = response;

if ( ! parsedResponse || parsedResponse.errors ) {
return false;
}

if ( true === parsedResponse ) {
return true;
}

$.each( parsedResponse.responses, function() {
wpList.add.call( list, this.data, $.extend( {}, settings, { // this.firstChild.nodevalue
position: this.position || 0,
id: this.id || 0,
oldId: this.oldId || null
} ) );
} );

list.wpList.recolor();
$( list ).trigger( 'wpListAddEnd', [ settings, list.wpList ] );
wpList.clear.call( list, '#' + settings.element );
};

settings.complete = function( jqXHR, status ) {
if ( typeof settings.addAfter === 'function' ) {
settings.addAfter( returnedResponse, $.extend( {
xml: jqXHR,
status: status,
parsed: parsedResponse
}, settings ) );
}
};

$.ajax( settings );

return false;
},

/**
* Delete an item in the list via Ajax.
*
* @param {HTMLElement} element A DOM element containing item data.
* @param {Object} settings Settings for this list.
* @return {boolean} Whether the item was deleted.
*/
ajaxDel: function( element, settings ) {
var list = this,
$element = $( element ),
data = wpList.parseData( $element, 'delete' ),
$eventTarget, parsedResponse, returnedResponse;

settings = settings || {};
settings = wpList.pre.call( list, $element, settings, 'delete' );

settings.element = data[2] || settings.element || null;
settings.delColor = data[3] ? '#' + data[3] : settings.delColor;

if ( ! settings || ! settings.element ) {
return false;
}

settings.action = 'delete-' + settings.what;
settings.nonce = wpList.nonce( $element, settings );

settings.data = $.extend( {
_ajax_nonce: settings.nonce,
action: settings.action,
id: settings.element.split( '-' ).pop()
}, wpAjax.unserialize( data[4] || '' ) );

if ( typeof settings.delBefore === 'function' ) {
settings = settings.delBefore( settings, list );

if ( ! settings ) {
return true;
}
}

if ( ! settings.data._ajax_nonce ) {
return true;
}

$eventTarget = $( '#' + settings.element );

if ( 'none' !== settings.delColor ) {
$eventTarget.css( 'backgroundColor', settings.delColor ).fadeOut( 350, function() {
list.wpList.recolor();
$( list ).trigger( 'wpListDelEnd', [ settings, list.wpList ] );
} );
} else {
list.wpList.recolor();
$( list ).trigger( 'wpListDelEnd', [ settings, list.wpList ] );
}

settings.success = function( response ) {
parsedResponse = wpAjax.parseAjaxResponse( response, settings.response, settings.element );
returnedResponse = response;

if ( ! parsedResponse || parsedResponse.errors ) {
$eventTarget.stop().stop().css( 'backgroundColor', '#faa' ).show().queue( function() {
list.wpList.recolor();
$( this ).dequeue();
} );

return false;
}
};

settings.complete = function( jqXHR, status ) {
if ( typeof settings.delAfter === 'function' ) {
$eventTarget.queue( function() {
settings.delAfter( returnedResponse, $.extend( {
xml: jqXHR,
status: status,
parsed: parsedResponse
}, settings ) );
} ).dequeue();
}
};

$.ajax( settings );

return false;
},

/**
* Dim an item in the list via Ajax.
*
* @param {HTMLElement} element A DOM element containing item data.
* @param {Object} settings Settings for this list.
* @return {boolean} Whether the item was dim'ed.
*/
ajaxDim: function( element, settings ) {
var list = this,
$element = $( element ),
data = wpList.parseData( $element, 'dim' ),
$eventTarget, isClass, color, dimColor, parsedResponse, returnedResponse;

// Prevent hidden links from being clicked by hotkeys.
if ( 'none' === $element.parent().css( 'display' ) ) {
return false;
}

settings = settings || {};
settings = wpList.pre.call( list, $element, settings, 'dim' );

settings.element = data[2] || settings.element || null;
settings.dimClass = data[3] || settings.dimClass || null;
settings.dimAddColor = data[4] ? '#' + data[4] : settings.dimAddColor;
settings.dimDelColor = data[5] ? '#' + data[5] : settings.dimDelColor;

if ( ! settings || ! settings.element || ! settings.dimClass ) {
return true;
}

settings.action = 'dim-' + settings.what;
settings.nonce = wpList.nonce( $element, settings );

settings.data = $.extend( {
_ajax_nonce: settings.nonce,
action: settings.action,
id: settings.element.split( '-' ).pop(),
dimClass: settings.dimClass
}, wpAjax.unserialize( data[6] || '' ) );

if ( typeof settings.dimBefore === 'function' ) {
settings = settings.dimBefore( settings );

if ( ! settings ) {
return true;
}
}

$eventTarget = $( '#' + settings.element );
isClass = $eventTarget.toggleClass( settings.dimClass ).is( '.' + settings.dimClass );
color = wpList.getColor( $eventTarget );
dimColor = isClass ? settings.dimAddColor : settings.dimDelColor;
$eventTarget.toggleClass( settings.dimClass );

if ( 'none' !== dimColor ) {
$eventTarget
.animate( { backgroundColor: dimColor }, 'fast' )
.queue( function() {
$eventTarget.toggleClass( settings.dimClass );
$( this ).dequeue();
} )
.animate( { backgroundColor: color }, {
complete: function() {
$( this ).css( 'backgroundColor', '' );
$( list ).trigger( 'wpListDimEnd', [ settings, list.wpList ] );
}
} );
} else {
$( list ).trigger( 'wpListDimEnd', [ settings, list.wpList ] );
}

if ( ! settings.data._ajax_nonce ) {
return true;
}

settings.success = function( response ) {
parsedResponse = wpAjax.parseAjaxResponse( response, settings.response, settings.element );
returnedResponse = response;

if ( true === parsedResponse ) {
return true;
}

if ( ! parsedResponse || parsedResponse.errors ) {
$eventTarget.stop().stop().css( 'backgroundColor', '#ff3333' )[isClass ? 'removeClass' : 'addClass']( settings.dimClass ).show().queue( function() {
list.wpList.recolor();
$( this ).dequeue();
} );

return false;
}

/** @property {string} comment_link Link of the comment to be dimmed. */
if ( 'undefined' !== typeof parsedResponse.responses[0].supplemental.comment_link ) {
var $submittedOn = $element.find( '.submitted-on' ),
$commentLink = $submittedOn.find( 'a' );

// Comment is approved; link the date field.
if ( '' !== parsedResponse.responses[0].supplemental.comment_link ) {
$submittedOn.html( $('<a></a>').text( $submittedOn.text() ).prop( 'href', parsedResponse.responses[0].supplemental.comment_link ) );

// Comment is not approved; unlink the date field.
} else if ( $commentLink.length ) {
$submittedOn.text( $commentLink.text() );
}
}
};

settings.complete = function( jqXHR, status ) {
if ( typeof settings.dimAfter === 'function' ) {
$eventTarget.queue( function() {
settings.dimAfter( returnedResponse, $.extend( {
xml: jqXHR,
status: status,
parsed: parsedResponse
}, settings ) );
} ).dequeue();
}
};

$.ajax( settings );

return false;
},

/**
* Returns the background color of the passed element.
*
* @param {jQuery|string} element Element to check.
* @return {string} Background color value in HEX. Default: '#ffffff'.
*/
getColor: function( element ) {
return $( element ).css( 'backgroundColor' ) || '#ffffff';
},

/**
* Adds something.
*
* @param {HTMLElement} element A DOM element containing item data.
* @param {Object} settings Settings for this list.
* @return {boolean} Whether the item was added.
*/
add: function( element, settings ) {
var $list = $( this ),
$element = $( element ),
old = false,
position, reference;

if ( 'string' === typeof settings ) {
settings = { what: settings };
}

settings = $.extend( { position: 0, id: 0, oldId: null }, this.wpList.settings, settings );

if ( ! $element.length || ! settings.what ) {
return false;
}

if ( settings.oldId ) {
old = $( '#' + settings.what + '-' + settings.oldId );
}

if ( settings.id && ( settings.id !== settings.oldId || ! old || ! old.length ) ) {
$( '#' + settings.what + '-' + settings.id ).remove();
}

if ( old && old.length ) {
old.before( $element );
old.remove();

} else if ( isNaN( settings.position ) ) {
position = 'after';

if ( '-' === settings.position.substr( 0, 1 ) ) {
settings.position = settings.position.substr( 1 );
position = 'before';
}

reference = $list.find( '#' + settings.position );

if ( 1 === reference.length ) {
reference[position]( $element );
} else {
$list.append( $element );
}

} else if ( 'comment' !== settings.what || 0 === $( '#' + settings.element ).length ) {
if ( settings.position < 0 ) {
$list.prepend( $element );
} else {
$list.append( $element );
}
}

if ( settings.alt ) {
$element.toggleClass( settings.alt, ( $list.children( ':visible' ).index( $element[0] ) + settings.altOffset ) % 2 );
}

if ( 'none' !== settings.addColor ) {
$element.css( 'backgroundColor', settings.addColor ).animate( { backgroundColor: wpList.getColor( $element ) }, {
complete: function() {
$( this ).css( 'backgroundColor', '' );
}
} );
}

// Add event handlers.
$list.each( function( index, list ) {
list.wpList.process( $element );
} );

return $element;
},

/**
* Clears all input fields within the element passed.
*
* @param {string} elementId ID of the element to check, including leading #.
*/
clear: function( elementId ) {
var list = this,
$element = $( elementId ),
type, tagName;

// Bail if we're within the list.
if ( list.wpList && $element.parents( '#' + list.id ).length ) {
return;
}

// Check each input field.
$element.find( ':input' ).each( function( index, input ) {

// Bail if the form was marked to not to be cleared.
if ( $( input ).parents( '.form-no-clear' ).length ) {
return;
}

type = input.type.toLowerCase();
tagName = input.tagName.toLowerCase();

if ( 'text' === type || 'password' === type || 'textarea' === tagName ) {
input.value = '';

} else if ( 'checkbox' === type || 'radio' === type ) {
input.checked = false;

} else if ( 'select' === tagName ) {
input.selectedIndex = null;
}
} );
},

/**
* Registers event handlers to add, delete, and dim items.
*
* @param {string} elementId
*/
process: function( elementId ) {
var list = this,
$element = $( elementId || document );

$element.on( 'submit', 'form[data-wp-lists^="add:' + list.id + ':"]', function() {
return list.wpList.add( this );
} );

$element.on( 'click', '[data-wp-lists^="add:' + list.id + ':"], input[data-wp-lists^="add:' + list.id + ':"]', function() {
return list.wpList.add( this );
} );

$element.on( 'click', '[data-wp-lists^="delete:' + list.id + ':"]', function() {
return list.wpList.del( this );
} );

$element.on( 'click', '[data-wp-lists^="dim:' + list.id + ':"]', function() {
return list.wpList.dim( this );
} );
},

/**
* Updates list item background colors.
*/
recolor: function() {
var list = this,
evenOdd = [':even', ':odd'],
items;

// Bail if there is no alternate class name specified.
if ( ! list.wpList.settings.alt ) {
return;
}

items = $( '.list-item:visible', list );

if ( ! items.length ) {
items = $( list ).children( ':visible' );
}

if ( list.wpList.settings.altOffset % 2 ) {
evenOdd.reverse();
}

items.filter( evenOdd[0] ).addClass( list.wpList.settings.alt ).end();
items.filter( evenOdd[1] ).removeClass( list.wpList.settings.alt );
},

/**
* Sets up `process()` and `recolor()` functions.
*/
init: function() {
var $list = this;

$list.wpList.process = function( element ) {
$list.each( function() {
this.wpList.process( element );
} );
};

$list.wpList.recolor = function() {
$list.each( function() {
this.wpList.recolor();
} );
};
}
};

/**
* Initializes wpList object.
*
* @param {Object} settings
* @param {string} settings.url URL for ajax calls. Default: ajaxurl.
* @param {string} settings.type The HTTP method to use for Ajax requests. Default: 'POST'.
* @param {string} settings.response ID of the element the parsed ajax response will be stored in.
* Default: 'ajax-response'.
*
* @param {string} settings.what Default: ''.
* @param {string} settings.alt CSS class name for alternate styling. Default: 'alternate'.
* @param {number} settings.altOffset Offset to start alternate styling from. Default: 0.
* @param {string} settings.addColor Hex code or 'none' to disable animation. Default: '#ffff33'.
* @param {string} settings.delColor Hex code or 'none' to disable animation. Default: '#faafaa'.
* @param {string} settings.dimAddColor Hex code or 'none' to disable animation. Default: '#ffff33'.
* @param {string} settings.dimDelColor Hex code or 'none' to disable animation. Default: '#ff3333'.
*
* @param {wpList~confirm} settings.confirm Callback that's run before a request is made. Default: null.
* @param {wpList~addBefore} settings.addBefore Callback that's run before an item gets added to the list.
* Default: null.
* @param {wpList~addAfter} settings.addAfter Callback that's run after an item got added to the list.
* Default: null.
* @param {wpList~delBefore} settings.delBefore Callback that's run before an item gets deleted from the list.
* Default: null.
* @param {wpList~delAfter} settings.delAfter Callback that's run after an item got deleted from the list.
* Default: null.
* @param {wpList~dimBefore} settings.dimBefore Callback that's run before an item gets dim'd. Default: null.
* @param {wpList~dimAfter} settings.dimAfter Callback that's run after an item got dim'd. Default: null.
* @return {$.fn} wpList API function.
*/
$.fn.wpList = function( settings ) {
this.each( function( index, list ) {
list.wpList = {
settings: $.extend( {}, wpList.settings, { what: wpList.parseData( list, 'list' )[1] || '' }, settings )
};

$.each( functions, function( func, callback ) {
list.wpList[func] = function( element, setting ) {
return wpList[callback].call( list, element, setting );
};
} );
} );

wpList.init.call( this );
this.wpList.process();

return this;
};
} ) ( jQuery );