[rbdr/dotfiles] / atom / packages / ex-mode / node_modules / space-pen / node_modules / jquery / src / callbacks.js

define([
        "./core",
        "./var/rnotwhite"
], function( jQuery, rnotwhite ) {

// String to Object options format cache
var optionsCache = {};

// Convert String-formatted options into Object-formatted ones and store in cache
function createOptions( options ) {
        var object = optionsCache[ options ] = {};
        jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) {
                object[ flag ] = true;
        });
        return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *      options: an optional list of space-separated options that will change how
 *                      the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *      once:                   will ensure the callback list can only be fired once (like a Deferred)
 *
 *      memory:                 will keep track of previous values and will call any callback added
 *                                      after the list has been fired right away with the latest "memorized"
 *                                      values (like a Deferred)
 *
 *      unique:                 will ensure a callback can only be added once (no duplicate in the list)
 *
 *      stopOnFalse:    interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

        // Convert options from String-formatted to Object-formatted if needed
        // (we check in cache first)
        options = typeof options === "string" ?
                ( optionsCache[ options ] || createOptions( options ) ) :
                jQuery.extend( {}, options );

        var // Last fire value (for non-forgettable lists)
                memory,
                // Flag to know if list was already fired
                fired,
                // Flag to know if list is currently firing
                firing,
                // First callback to fire (used internally by add and fireWith)
                firingStart,
                // End of the loop when firing
                firingLength,
                // Index of currently firing callback (modified by remove if needed)
                firingIndex,
                // Actual callback list
                list = [],
                // Stack of fire calls for repeatable lists
                stack = !options.once && [],
                // Fire callbacks
                fire = function( data ) {
                        memory = options.memory && data;
                        fired = true;
                        firingIndex = firingStart || 0;
                        firingStart = 0;
                        firingLength = list.length;
                        firing = true;
                        for ( ; list && firingIndex < firingLength; firingIndex++ ) {
                                if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
                                        memory = false; // To prevent further calls using add
                                        break;
                                }
                        }
                        firing = false;
                        if ( list ) {
                                if ( stack ) {
                                        if ( stack.length ) {
                                                fire( stack.shift() );
                                        }
                                } else if ( memory ) {
                                        list = [];
                                } else {
                                        self.disable();
                                }
                        }
                },
                // Actual Callbacks object
                self = {
                        // Add a callback or a collection of callbacks to the list
                        add: function() {
                                if ( list ) {
                                        // First, we save the current length
                                        var start = list.length;
                                        (function add( args ) {
                                                jQuery.each( args, function( _, arg ) {
                                                        var type = jQuery.type( arg );
                                                        if ( type === "function" ) {
                                                                if ( !options.unique || !self.has( arg ) ) {
                                                                        list.push( arg );
                                                                }
                                                        } else if ( arg && arg.length && type !== "string" ) {
                                                                // Inspect recursively
                                                                add( arg );
                                                        }
                                                });
                                        })( arguments );
                                        // Do we need to add the callbacks to the
                                        // current firing batch?
                                        if ( firing ) {
                                                firingLength = list.length;
                                        // With memory, if we're not firing then
                                        // we should call right away
                                        } else if ( memory ) {
                                                firingStart = start;
                                                fire( memory );
                                        }
                                }
                                return this;
                        },
                        // Remove a callback from the list
                        remove: function() {
                                if ( list ) {
                                        jQuery.each( arguments, function( _, arg ) {
                                                var index;
                                                while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
                                                        list.splice( index, 1 );
                                                        // Handle firing indexes
                                                        if ( firing ) {
                                                                if ( index <= firingLength ) {
                                                                        firingLength--;
                                                                }
                                                                if ( index <= firingIndex ) {
                                                                        firingIndex--;
                                                                }
                                                        }
                                                }
                                        });
                                }
                                return this;
                        },
                        // Check if a given callback is in the list.
                        // If no argument is given, return whether or not list has callbacks attached.
                        has: function( fn ) {
                                return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length );
                        },
                        // Remove all callbacks from the list
                        empty: function() {
                                list = [];
                                firingLength = 0;
                                return this;
                        },
                        // Have the list do nothing anymore
                        disable: function() {
                                list = stack = memory = undefined;
                                return this;
                        },
                        // Is it disabled?
                        disabled: function() {
                                return !list;
                        },
                        // Lock the list in its current state
                        lock: function() {
                                stack = undefined;
                                if ( !memory ) {
                                        self.disable();
                                }
                                return this;
                        },
                        // Is it locked?
                        locked: function() {
                                return !stack;
                        },
                        // Call all callbacks with the given context and arguments
                        fireWith: function( context, args ) {
                                if ( list && ( !fired || stack ) ) {
                                        args = args || [];
                                        args = [ context, args.slice ? args.slice() : args ];
                                        if ( firing ) {
                                                stack.push( args );
                                        } else {
                                                fire( args );
                                        }
                                }
                                return this;
                        },
                        // Call all the callbacks with the given arguments
                        fire: function() {
                                self.fireWith( this, arguments );
                                return this;
                        },
                        // To know if the callbacks have already been called at least once
                        fired: function() {
                                return !!fired;
                        }
                };

        return self;
};

return jQuery;
});