Subversion-Projekte lars-tiefland.cienc

/*! Buttons for DataTables 1.0.3
 * ©2015 SpryMedia Ltd - datatables.net/license
 */
(function(window, document, undefined) {


var factory = function( $, DataTable ) {
"use strict";

// Used for namespacing events added to the document by each instance, so they
// can be removed on destroy
var _instCounter = 0;

// Button namespacing counter for namespacing events on individual buttons
var _buttonCounter = 0;

var _dtButtons = DataTable.ext.buttons;

/**
 * [Buttons description]
 * @param {[type]}
 * @param {[type]}
 */
var Buttons = function( dt, config )
{
        // Allow a boolean true for defaults
        if ( config === true ) {
                config = {};
        }

        // For easy configuration of buttons an array can be given
        if ( $.isArray( config ) ) {
                config = { buttons: config };
        }

        this.c = $.extend( true, {}, Buttons.defaults, config );

        // Don't want a deep copy for the buttons
        if ( config.buttons ) {
                this.c.buttons = config.buttons;
        }

        this.s = {
                dt: new DataTable.Api( dt ),
                buttons: [],
                subButtons: [],
                listenKeys: '',
                namespace: 'dtb'+(_instCounter++)
        };

        this.dom = {
                container: $('<'+this.c.dom.container.tag+'/>')
                        .addClass( this.c.dom.container.className )
        };

        this._constructor();
};


$.extend( Buttons.prototype, {
        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Public methods
         */

        /**
         * Get the action of a button
         * @param  {int|string} Button index
         * @return {function}
         *//**
         * Set the action of a button
         * @param  {int|string} Button index
         * @param  {function} Function to set
         * @return {Buttons} Self for chaining
         */
        action: function ( idx, action )
        {
                var button = this._indexToButton( idx ).conf;

                if ( action === undefined ) {
                        return button.action;
                }

                button.action = action;

                return this;
        },

        /**
         * Add an active class to the button to make to look active
         * @param  {int|string} Button index
         * @param  {boolean} [flag=true] Enable / disable flag
         * @return {Buttons} Self for chaining
         */
        active: function ( idx, flag ) {
                var button = this._indexToButton( idx );
                button.node.toggleClass(
                        this.c.dom.button.active,
                        flag === undefined ? true : flag
                );

                return this;
        },

        /**
         * Add a new button
         * @param {int|string} Button index for where to insert the button
         * @param {object} Button configuration object, base string name or function
         * @return {Buttons} Self for chaining
         */
        add: function ( idx, config )
        {
                if ( typeof idx === 'string' && idx.indexOf('-') !== -1 ) {
                        var idxs = idx.split('-');
                        this.c.buttons[idxs[0]*1].buttons.splice( idxs[1]*1, 0, config );
                }
                else {
                        this.c.buttons.splice( idx*1, 0, config );
                }

                this.dom.container.empty();
                this._buildButtons( this.c.buttons );

                return this;
        },

        /**
         * Get the container node for the buttons
         * @return {jQuery} Buttons node
         */
        container: function ()
        {
                return this.dom.container;
        },

        /**
         * Disable a button
         * @param  {int|string} Button index
         * @return {Buttons} Self for chaining
         */
        disable: function ( idx ) {
                var button = this._indexToButton( idx );
                button.node.addClass( this.c.dom.button.disabled );

                return this;
        },

        /**
         * Destroy the instance, cleaning up event handlers and removing DOM
         * elements
         * @return {Buttons} Self for chaining
         */
        destroy: function ()
        {
                // Key event listener
                $('body').off( 'keyup.'+this.s.namespace );

                // Individual button destroy (so they can remove their own events if
                // needed
                var buttons = this.s.buttons;
                var subButtons = this.s.subButtons;
                var i, ien, j, jen;
                
                for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                        this.removePrep( i );

                        for ( j=0, jen=subButtons[i].length ; j<jen ; j++ ) {
                                this.removePrep( i+'-'+j );
                        }
                }

                this.removeCommit();

                // Container
                this.dom.container.remove();

                // Remove from the settings object collection
                var buttonInsts = this.s.dt.settings()[0];

                for ( i=0, ien=buttonInsts.length ; i<ien ; i++ ) {
                        if ( buttonInsts.inst === this ) {
                                buttonInsts.splice( i, 1 );
                                break;
                        }
                }

                return this;
        },

        /**
         * Enable / disable a button
         * @param  {int|string} Button index
         * @param  {boolean} [flag=true] Enable / disable flag
         * @return {Buttons} Self for chaining
         */
        enable: function ( idx, flag )
        {
                if ( flag === false ) {
                        return this.disable( idx );
                }

                var button = this._indexToButton( idx );
                button.node.removeClass( this.c.dom.button.disabled );

                return this;
        },

        /**
         * Get the instance name for the button set selector
         * @return {string} Instance name
         */
        name: function ()
        {
                return this.c.name;
        },

        /**
         * Get a button's node
         * @param  {int|string} Button index
         * @return {jQuery} Button element
         */
        node: function ( idx )
        {
                var button = this._indexToButton( idx );
                return button.node;
        },

        /**
         * Tidy up any buttons that have been scheduled for removal. This is
         * required so multiple buttons can be removed without upsetting the button
         * indexes while removing them.
         * @param  {int|string} Button index
         * @return {Buttons} Self for chaining
         */
        removeCommit: function ()
        {
                var buttons = this.s.buttons;
                var subButtons = this.s.subButtons;
                var i, ien, j;

                for ( i=buttons.length-1 ; i>=0 ; i-- ) {
                        if ( buttons[i] === null ) {
                                buttons.splice( i, 1 );
                                subButtons.splice( i, 1 );
                                this.c.buttons.splice( i, 1 );
                        }
                }

                for ( i=0, ien=subButtons.length ; i<ien ; i++ ) {
                        for ( j=subButtons[i].length-1 ; j>=0 ; j-- ) {
                                if ( subButtons[i][j] === null ) {
                                        subButtons[i].splice( j, 1 );
                                        this.c.buttons[i].buttons.splice( j, 1 );
                                }
                        }
                }

                return this;
        },

        /**
         * Scheduled a button for removal. This is required so multiple buttons can
         * be removed without upsetting the button indexes while removing them.
         * @return {Buttons} Self for chaining
         */
        removePrep: function ( idx )
        {
                var button;
                var dt = this.s.dt;

                if ( typeof idx === 'number' || idx.indexOf('-') === -1 ) {
                        // Top level button
                        button = this.s.buttons[ idx*1 ];

                        if ( button.conf.destroy ) {
                                button.conf.destroy.call( dt.button(idx), dt, button, button.conf );
                        }

                        button.node.remove();
                        this._removeKey( button.conf );
                        this.s.buttons[ idx*1 ] = null;
                }
                else {
                        // Collection button
                        var idxs = idx.split('-');
                        button = this.s.subButtons[ idxs[0]*1 ][ idxs[1]*1 ];

                        if ( button.conf.destroy ) {
                                button.conf.destroy.call( dt.button(idx), dt, button, button.conf );
                        }

                        button.node.remove();
                        this._removeKey( button.conf );
                        this.s.subButtons[ idxs[0]*1 ][ idxs[1]*1 ] = null;
                }

                return this;
        },

        /**
         * Get the text for a button
         * @param  {int|string} Button index
         * @return {string} Button text
         *//**
         * Set the text for a button
         * @param  {int|string|function} Button index
         * @param  {string} Text
         * @return {Buttons} Self for chaining
         */
        text: function ( idx, label )
        {
                var button = this._indexToButton( idx );
                var linerTag = this.c.dom.buttonLiner.tag;
                var dt = this.s.dt;
                var text = function ( opt ) {
                        return typeof opt === 'function' ?
                                opt( dt, button.node, button.conf ) :
                                opt;
                };

                if ( label === undefined ) {
                        return text( button.conf.text );
                }

                button.conf.text = label;

                if ( linerTag ) {
                        button.node.children( linerTag ).html( text(label) );
                }
                else {
                        button.node.html( text(label) );
                }

                return this;
        },

        /**
         * Calculate button index from a node
         * @param  {node} Button node (_not_ a jQuery object)
         * @return {string} Index. Undefined if not found
         */
        toIndex: function ( node )
        {
                var i, ien, j, jen;
                var buttons = this.s.buttons;
                var subButtons = this.s.subButtons;

                // Loop the main buttons first
                for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                        if ( buttons[i].node[0] === node ) {
                                return i+'';
                        }
                }

                // Then the sub-buttons
                for ( i=0, ien=subButtons.length ; i<ien ; i++ ) {
                        for ( j=0, jen=subButtons[i].length ; j<jen ; j++ ) {
                                if ( subButtons[i][j].node[0] === node ) {
                                        return i+'-'+j;
                                }
                        }
                }
        },


        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Constructor
         */

        /**
         * Buttons constructor
         * @private
         */
        _constructor: function ()
        {
                var that = this;
                var dt = this.s.dt;
                var dtSettings = dt.settings()[0];

                if ( ! dtSettings._buttons ) {
                        dtSettings._buttons = [];
                }

                dtSettings._buttons.push( {
                        inst: this,
                        name: this.c.name
                } );

                this._buildButtons( this.c.buttons );

                dt.on( 'destroy', function () {
                        that.destroy();
                } );

                // Global key event binding to listen for button keys
                $('body').on( 'keyup.'+this.s.namespace, function ( e ) {
                        if ( ! document.activeElement || document.activeElement === document.body ) {
                                // SUse a string of characters for fast lookup of if we need to
                                // handle this
                                var character = String.fromCharCode(e.keyCode).toLowerCase();

                                if ( that.s.listenKeys.toLowerCase().indexOf( character ) !== -1 ) {
                                        that._keypress( character, e );
                                }
                        }
                } );
        },


        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Private methods
         */

        /**
         * Add a new button to the key press listener
         * @param {object} Resolved button configuration object
         * @private
         */
        _addKey: function ( conf )
        {
                if ( conf.key ) {
                        this.s.listenKeys += $.isPlainObject( conf.key ) ?
                                conf.key.key :
                                conf.key;
                }
        },

        /**
         * Create buttons from an array of buttons
         * @param  {array} Buttons to create
         * @param  {jQuery} Container node into which the created button should be
         *   inserted.
         * @param  {int} Counter for sub-buttons to be stored in a collection
         * @private
         */
        _buildButtons: function ( buttons, container, collectionCounter )
        {
                var dt = this.s.dt;

                if ( ! container ) {
                        container = this.dom.container;
                        this.s.buttons = [];
                        this.s.subButtons = [];
                }

                for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
                        var conf = this._resolveExtends( buttons[i] );

                        if ( ! conf ) {
                                continue;
                        }

                        // If the configuration is an array, then expand the buttons at this
                        // point
                        if ( $.isArray( conf ) ) {
                                this._buildButtons( conf, container, collectionCounter );
                                continue;
                        }

                        var button = this._buildButton(
                                conf,
                                collectionCounter!==undefined ? true : false
                        );

                        if ( ! button ) {
                                continue;
                        }

                        var buttonNode = button.node;
                        container.append( button.inserter );

                        if ( collectionCounter === undefined ) {
                                this.s.buttons.push( {
                                        node:     buttonNode,
                                        conf:     conf,
                                        inserter: button.inserter
                                } );
                                this.s.subButtons.push( [] );
                        }
                        else {
                                this.s.subButtons[ collectionCounter ].push( {
                                        node:     buttonNode,
                                        conf:     conf,
                                        inserter: button.inserter
                                } );
                        }

                        if ( conf.buttons ) {
                                var collectionDom = this.c.dom.collection;
                                conf._collection = $('<'+collectionDom.tag+'/>')
                                        .addClass( collectionDom.className );

                                this._buildButtons( conf.buttons, conf._collection, i );
                        }

                        // init call is made here, rather than buildButton as it needs to
                        // have been added to the buttons / subButtons array first
                        if ( conf.init ) {
                                conf.init.call( dt.button( buttonNode ), dt, buttonNode, conf );
                        }
                }
        },

        /**
         * Create an individual button
         * @param  {object} config            Resolved button configuration
         * @param  {boolean} collectionButton `true` if a collection button
         * @return {jQuery} Created button node (jQuery)
         * @private
         */
        _buildButton: function ( config, collectionButton )
        {
                var that = this;
                var buttonDom = this.c.dom.button;
                var linerDom = this.c.dom.buttonLiner;
                var collectionDom = this.c.dom.collection;
                var dt = this.s.dt;
                var text = function ( opt ) {
                        return typeof opt === 'function' ?
                                opt( dt, button, config ) :
                                opt;
                };

                if ( collectionButton && collectionDom.button ) {
                        buttonDom = collectionDom.button;
                }

                if ( collectionButton && collectionDom.buttonLiner ) {
                        linerDom = collectionDom.buttonLiner;
                }

                // Make sure that the button is available based on whatever requirements
                // it has. For example, Flash buttons require Flash
                if ( config.available && ! config.available( dt, config ) ) {
                        return false;
                }

                var button = $('<'+buttonDom.tag+'/>')
                        .addClass( buttonDom.className )
                        .attr( 'tabindex', this.s.dt.settings()[0].iTabIndex )
                        .attr( 'aria-controls', this.s.dt.table().node().id )
                        .on( 'click.dtb', function (e) {
                                e.preventDefault();

                                if ( ! button.hasClass( buttonDom.disabled ) && config.action ) {
                                        config.action.call( dt.button( button ), e, dt, button, config );
                                }

                                button.blur();
                        } )
                        .on( 'keyup.dtb', function (e) {
                                if ( e.keyCode === 13 ) {
                                        if ( ! button.hasClass( buttonDom.disabled ) && config.action ) {
                                                config.action.call( dt.button( button ), e, dt, button, config );
                                        }
                                }
                        } );

                if ( linerDom.tag ) {
                        button.append(
                                $('<'+linerDom.tag+'/>')
                                        .html( text( config.text ) )
                                        .addClass( linerDom.className )
                        );
                }
                else {
                        button.html( text( config.text ) );
                }

                if ( config.enabled === false ) {
                        button.addClass( buttonDom.disabled );
                }

                if ( config.className ) {
                        button.addClass( config.className );
                }

                if ( ! config.namespace ) {
                        config.namespace = '.dt-button-'+(_buttonCounter++);
                }

                var buttonContainer = this.c.dom.buttonContainer;
                var inserter;
                if ( buttonContainer ) {
                        inserter = $('<'+buttonContainer.tag+'/>')
                                .addClass( buttonContainer.className )
                                .append( button );
                }
                else {
                        inserter = button;
                }

                this._addKey( config );

                return {
                        node: button,
                        inserter: inserter
                };
        },

        /**
         * Get a button's host information from a button index
         * @param  {int|string} Button index
         * @return {object} Button information - object contains `node` and `conf`
         *   properties
         * @private
         */
        _indexToButton: function ( idx )
        {
                if ( typeof idx === 'number' || idx.indexOf('-') === -1 ) {
                        return this.s.buttons[ idx*1 ];
                }

                var idxs = idx.split('-');
                return this.s.subButtons[ idxs[0]*1 ][ idxs[1]*1 ];
        },

        /**
         * Handle a key press - determine if any button's key configured matches
         * what was typed and trigger the action if so.
         * @param  {string} The character pressed
         * @param  {object} Key event that triggered this call
         * @private
         */
        _keypress: function ( character, e )
        {
                var i, ien, j, jen;
                var buttons = this.s.buttons;
                var subButtons = this.s.subButtons;
                var run = function ( conf, node ) {
                        if ( ! conf.key ) {
                                return;
                        }

                        if ( conf.key === character ) {
                                node.click();
                        }
                        else if ( $.isPlainObject( conf.key ) ) {
                                if ( conf.key.key !== character ) {
                                        return;
                                }

                                if ( conf.key.shiftKey && ! e.shiftKey ) {
                                        return;
                                }

                                if ( conf.key.altKey && ! e.altKey ) {
                                        return;
                                }

                                if ( conf.key.ctrlKey && ! e.ctrlKey ) {
                                        return;
                                }

                                if ( conf.key.metaKey && ! e.metaKey ) {
                                        return;
                                }

                                // Made it this far - it is good
                                node.click();
                        }
                };

                // Loop the main buttons first
                for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                        run( buttons[i].conf, buttons[i].node );
                }

                // Then the sub-buttons
                for ( i=0, ien=subButtons.length ; i<ien ; i++ ) {
                        for ( j=0, jen=subButtons[i].length ; j<jen ; j++ ) {
                                run( subButtons[i][j].conf, subButtons[i][j].node );
                        }
                }
        },

        /**
         * Remove a key from the key listener for this instance (to be used when a
         * button is removed)
         * @param  {object} Button configuration
         */
        _removeKey: function ( conf )
        {
                if ( conf.key ) {
                        var character = $.isPlainObject( conf.key ) ?
                                conf.key.key :
                                conf.key;

                        // Remove only one character, as multiple buttons could have the
                        // same listening key
                        var a = this.s.listenKeys.split('');
                        var idx = $.inArray( character, a );
                        a.splice( idx, 1 );
                        this.s.listenKeys = a.join('');
                }
        },

        /**
         * Resolve a button configuration
         * @param  {string|function|object} Button config to resolve
         * @return {object} Button configuration
         */
        _resolveExtends: function ( conf )
        {
                var dt = this.s.dt;
                var i, ien;
                var toConfObject = function ( base ) {
                        var loop = 0;

                        // Loop until we have resolved to a button configuration, or an
                        // array of button configurations (which will be iterated
                        // separately)
                        while ( ! $.isPlainObject(base) && ! $.isArray(base) ) {
                                if ( typeof base === 'function' ) {
                                        base = base( dt, conf );

                                        if ( ! base ) {
                                                return false;
                                        }
                                }
                                else if ( typeof base === 'string' ) {
                                        if ( ! _dtButtons[ base ] ) {
                                                throw 'Unknown button type: '+base;
                                        }

                                        base = _dtButtons[ base ];
                                }

                                loop++;
                                if ( loop > 30 ) {
                                        // Protect against misconfiguration killing the browser
                                        throw 'Buttons: Too many iterations';
                                }
                        }

                        return $.isArray( base ) ?
                                base :
                                $.extend( {}, base );
                };

                conf = toConfObject( conf );

                while ( conf && conf.extend ) {
                        // Use `toConfObject` in case the button definition being extended
                        // is itself a string or a function
                        var objArray = toConfObject( _dtButtons[ conf.extend ] );
                        if ( $.isArray( objArray ) ) {
                                return objArray;
                        }

                        // Stash the current class name
                        var originalClassName = objArray.className;

                        conf = $.extend( {}, objArray, conf );

                        // The extend will have overwritten the original class name if the
                        // `conf` object also assigned a class, but we want to concatenate
                        // them so they are list that is combined from all extended buttons
                        if ( originalClassName && conf.className !== originalClassName ) {
                                conf.className = originalClassName+' '+conf.className;
                        }

                        // Buttons to be added to a collection  -gives the ability to define
                        // if buttons should be added to the start or end of a collection
                        var postfixButtons = conf.postfixButtons;
                        if ( postfixButtons ) {
                                if ( ! conf.buttons ) {
                                        conf.buttons = [];
                                }

                                for ( i=0, ien=postfixButtons.length ; i<ien ; i++ ) {
                                        conf.buttons.push( postfixButtons[i] );
                                }

                                conf.postfixButtons = null;
                        }

                        var prefixButtons = conf.prefixButtons;
                        if ( prefixButtons ) {
                                if ( ! conf.buttons ) {
                                        conf.buttons = [];
                                }

                                for ( i=0, ien=prefixButtons.length ; i<ien ; i++ ) {
                                        conf.buttons.splice( i, 0, prefixButtons[i] );
                                }

                                conf.prefixButtons = null;
                        }

                        // Although we want the `conf` object to overwrite almost all of
                        // the properties of the object being extended, the `extend`
                        // property should come from the object being extended
                        conf.extend = objArray.extend;
                }

                return conf;
        }
} );



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Statics
 */

/**
 * Show / hide a background layer behind a collection
 * @param  {boolean} Flag to indicate if the background should be shown or
 *   hidden 
 * @param  {string} Class to assign to the background
 * @static
 */
Buttons.background = function ( show, className, fade ) {
        if ( fade === undefined ) {
                fade = 400;
        }

        if ( show ) {
                $('<div/>')
                        .addClass( className )
                        .css( 'display', 'none' )
                        .appendTo( 'body' )
                        .fadeIn( fade );
        }
        else {
                $('body > div.'+className)
                        .fadeOut( fade, function () {
                                $(this).remove();
                        } );
        }
};

/**
 * Instance selector - select Buttons instances based on an instance selector
 * value from the buttons assigned to a DataTable. This is only useful if
 * multiple instances are attached to a DataTable.
 * @param  {string|int|array} Instance selector - see `instance-selector`
 *   documentation on the DataTables site
 * @param  {array} Button instance array that was attached to the DataTables
 *   settings object
 * @return {array} Buttons instances
 * @static
 */
Buttons.instanceSelector = function ( group, buttons )
{
        if ( ! group ) {
                return $.map( buttons, function ( v ) {
                        return v.inst;
                } );
        }

        var ret = [];
        var names = $.map( buttons, function ( v ) {
                return v.name;
        } );

        // Flatten the group selector into an array of single options
        var process = function ( input ) {
                if ( $.isArray( input ) ) {
                        for ( var i=0, ien=input.length ; i<ien ; i++ ) {
                                process( input[i] );
                        }
                        return;
                }

                if ( typeof input === 'string' ) {
                        if ( input.indexOf( ',' ) !== -1 ) {
                                // String selector, list of names
                                process( input.split(',') );
                        }
                        else {
                                // String selector individual name
                                var idx = $.inArray( $.trim(input), names );

                                if ( idx !== -1 ) {
                                        ret.push( buttons[ idx ].inst );
                                }
                        }
                }
                else if ( typeof input === 'number' ) {
                        // Index selector
                        ret.push( buttons[ input ].inst );
                }
        };
        
        process( group );

        return ret;
};

/**
 * Button selector - select one or more buttons from a selector input so some
 * operation can be performed on them.
 * @param  {array} Button instances array that the selector should operate on
 * @param  {string|int|node|jQuery|array} Button selector - see
 *   `button-selector` documentation on the DataTables site
 * @return {array} Array of objects containing `inst` and `idx` properties of
 *   the selected buttons so you know which instance each button belongs to.
 * @static
 */
Buttons.buttonSelector = function ( insts, selector )
{
        var ret = [];
        var run = function ( selector, inst ) {
                var i, ien, j, jen;
                var buttons = [];

                $.each( inst.s.buttons, function (i, v) {
                        if ( v !== null ) {
                                buttons.push( {
                                        node: v.node[0],
                                        name: v.name
                                } );
                        }
                } );

                $.each( inst.s.subButtons, function (i, v) {
                        $.each( v, function (j, w) {
                                if ( w !== null ) {
                                        buttons.push( {
                                                node: w.node[0],
                                                name: w.name
                                        } );
                                }
                        } );
                } );

                var nodes = $.map( buttons, function (v) {
                        return v.node;
                } );

                if ( $.isArray( selector ) || selector instanceof $ ) {
                        for ( i=0, ien=selector.length ; i<ien ; i++ ) {
                                run( selector[i], inst );
                        }
                        return;
                }

                if ( selector === null || selector === undefined || selector === '*' ) {
                        // Select all
                        for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                                ret.push( {
                                        inst: inst,
                                        idx: inst.toIndex( buttons[i].node )
                                } );
                        }
                }
                else if ( typeof selector === 'number' ) {
                        // Main button index selector
                        ret.push( {
                                inst: inst,
                                idx: selector
                        } );
                }
                else if ( typeof selector === 'string' ) {
                        if ( selector.indexOf( ',' ) !== -1 ) {
                                // Split
                                var a = selector.split(',');

                                for ( i=0, ien=a.length ; i<ien ; i++ ) {
                                        run( $.trim(a[i]), inst );
                                }
                        }
                        else if ( selector.match( /^\d+(\-\d+)?$/ ) ) {
                                // Sub-button index selector
                                ret.push( {
                                        inst: inst,
                                        idx: selector
                                } );
                        }
                        else if ( selector.indexOf( ':name' ) !== -1 ) {
                                // Button name selector
                                var name = selector.replace( ':name', '' );

                                for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
                                        if ( buttons[i].name === name ) {
                                                ret.push( {
                                                        inst: inst,
                                                        idx: inst.toIndex( buttons[i].node )
                                                } );
                                        }
                                }
                        }
                        else {
                                // jQuery selector on the nodes
                                $( nodes ).filter( selector ).each( function () {
                                        ret.push( {
                                                inst: inst,
                                                idx: inst.toIndex( this )
                                        } );
                                } );
                        }
                }
                else if ( typeof selector === 'object' && selector.nodeName ) {
                        // Node selector
                        var idx = $.inArray( selector, nodes );

                        if ( idx !== -1 ) {
                                ret.push( {
                                        inst: inst,
                                        idx: inst.toIndex( nodes[ idx ] )
                                } );
                        }
                }
        };


        for ( var i=0, ien=insts.length ; i<ien ; i++ ) {
                var inst = insts[i];

                run( selector, inst );
        }

        return ret;
};


/**
 * Buttons defaults. For full documentation, please refer to the docs/option
 * directory or the DataTables site.
 * @type {Object}
 * @static
 */
Buttons.defaults = {
        buttons: [ 'copy', 'excel', 'csv', 'pdf', 'print' ],
        name: 'main',
        tabIndex: 0,
        dom: {
                container: {
                        tag: 'div',
                        className: 'dt-buttons'
                },
                collection: {
                        tag: 'div',
                        className: 'dt-button-collection'
                },
                button: {
                        tag: 'a',
                        className: 'dt-button',
                        active: 'active',
                        disabled: 'disabled'
                },
                buttonLiner: {
                        tag: 'span',
                        className: ''
                }
        }
};

/**
 * Version information
 * @type {string}
 * @static
 */
Buttons.version = '1.0.3';


$.extend( _dtButtons, {
        collection: {
                text: function ( dt, button, config ) {
                        return dt.i18n( 'buttons.collection', 'Collection' );
                },
                className: 'buttons-collection',
                action: function ( e, dt, button, config ) {
                        var background;
                        var host = button;
                        var hostOffset = host.offset();
                        var tableContainer = $( dt.table().container() );

                        config._collection
                                .addClass( config.collectionLayout )
                                .css( 'display', 'none' )
                                .appendTo( 'body' )
                                .fadeIn( config.fade );

                        if ( config._collection.css( 'position' ) === 'absolute' ) {
                                config._collection.css( {
                                        top: hostOffset.top + host.outerHeight(),
                                        left: hostOffset.left
                                } );

                                var listRight = hostOffset.left + config._collection.outerWidth();
                                var tableRight = tableContainer.offset().left + tableContainer.width();
                                if ( listRight > tableRight ) {
                                        config._collection.css( 'left', hostOffset.left - ( listRight - tableRight ) );
                                }
                        }
                        else {
                                // Fix position - centre on screen
                                var top = config._collection.height() / 2;
                                if ( top > $(window).height() / 2 ) {
                                        top = $(window).height() / 2;
                                }

                                config._collection.css( 'marginTop', top*-1 );
                        }

                        if ( config.background ) {
                                Buttons.background( true, config.backgroundClassName, config.fade );
                        }

                        // Need to break the 'thread' for the collection button being
                        // activated by a click - it would also trigger this event
                        setTimeout( function () {
                                $(document).on( 'click.dtb-collection', function (e) {
                                        if ( ! $(e.target).parents().andSelf().filter( config._collection ).length ) {
                                                config._collection
                                                        .fadeOut( config.fade, function () {
                                                                config._collection.detach();
                                                        } );

                                                Buttons.background( false, config.backgroundClassName, config.fade );

                                                $(document).off( 'click.dtb-collection' );
                                        }
                                } );
                        }, 10 );
                },
                background: true,
                collectionLayout: '',
                backgroundClassName: 'dt-button-background',
                fade: 400
        },
        copy: function ( dt, conf ) {
                if ( conf.preferHtml && _dtButtons.copyHtml5 ) {
                        return 'copyHtml5';
                }

                // Common option that will use the HTML5 or Flash export buttons
                // For copy, the Flash option gets priority since it is one click only
                if ( _dtButtons.copyFlash && _dtButtons.copyFlash.available( dt, conf ) ) {
                        return 'copyFlash';
                }
                if ( _dtButtons.copyHtml5 ) {
                        return 'copyHtml5';
                }
        },
        csv: function ( dt, conf ) {
                // Common option that will use the HTML5 or Flash export buttons
                if ( _dtButtons.csvHtml5 && _dtButtons.csvHtml5.available( dt, conf ) ) {
                        return 'csvHtml5';
                }
                if ( _dtButtons.csvFlash && _dtButtons.csvFlash.available( dt, conf ) ) {
                        return 'csvFlash';
                }
        },
        excel: function ( dt, conf ) {
                // Common option that will use the HTML5 or Flash export buttons
                if ( _dtButtons.excelHtml5 && _dtButtons.excelHtml5.available( dt, conf ) ) {
                        return 'excelHtml5';
                }
                if ( _dtButtons.excelFlash && _dtButtons.excelFlash.available( dt, conf ) ) {
                        return 'excelFlash';
                }
        },
        pdf: function ( dt, conf ) {
                // Common option that will use the HTML5 or Flash export buttons
                if ( _dtButtons.pdfHtml5 && _dtButtons.pdfHtml5.available( dt, conf ) ) {
                        return 'pdfHtml5';
                }
                if ( _dtButtons.pdfFlash && _dtButtons.pdfFlash.available( dt, conf ) ) {
                        return 'pdfFlash';
                }
        }
} );


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * DataTables API
 *
 * For complete documentation, please refer to the docs/api directory or the
 * DataTables site
 */

// Buttons group and individual button selector
DataTable.Api.register( 'buttons()', function ( group, selector ) {
        // Argument shifting
        if ( selector === undefined ) {
                selector = group;
                group = undefined;
        }

        return this.iterator( true, 'table', function ( ctx ) {
                if ( ctx._buttons ) {
                        return Buttons.buttonSelector(
                                Buttons.instanceSelector( group, ctx._buttons ),
                                selector
                        );
                }
        }, true );
} );

// Individual button selector
DataTable.Api.register( 'button()', function ( group, selector ) {
        // just run buttons() and truncate
        var buttons = this.buttons( group, selector );

        if ( buttons.length > 1 ) {
                buttons.splice( 1, buttons.length );
        }

        return buttons;
} );

// Active buttons
DataTable.Api.register( ['buttons().active()', 'button().active()'], function ( flag ) {
        return this.each( function ( set ) {
                set.inst.active( set.idx, flag );
        } );
} );

// Get / set button action
DataTable.Api.registerPlural( 'buttons().action()', 'button().action()', function ( action ) {
        if ( action === undefined ) {
                return this.map( function ( set ) {
                         return set.inst.action( set.idx );
                } );
        }

        return this.each( function ( set ) {
                set.inst.action( set.idx, action );
        } );
} );

// Enable / disable buttons
DataTable.Api.register( ['buttons().enable()', 'button().enable()'], function ( flag ) {
        return this.each( function ( set ) {
                set.inst.enable( set.idx, flag );
        } );
} );

// Disable buttons
DataTable.Api.register( ['buttons().disable()', 'button().disable()'], function () {
        return this.each( function ( set ) {
                set.inst.disable( set.idx );
        } );
} );

// Get button nodes
DataTable.Api.registerPlural( 'buttons().nodes()', 'button().node()', function () {
        var jq = $();

        // jQuery will automatically reduce duplicates to a single entry
        $( this.each( function ( set ) {
                jq = jq.add( set.inst.node( set.idx ) );
        } ) );

        return jq;
} );

// Get / set button text (i.e. the button labels)
DataTable.Api.registerPlural( 'buttons().text()', 'button().text()', function ( label ) {
        if ( label === undefined ) {
                return this.map( function ( set ) {
                         return set.inst.text( set.idx );
                } );
        }

        return this.each( function ( set ) {
                set.inst.text( set.idx, label );
        } );
} );

// Trigger a button's action
DataTable.Api.registerPlural( 'buttons().trigger()', 'button().trigger()', function () {
        return this.each( function ( set ) {
                set.inst.node( set.idx ).trigger( 'click' );
        } );
} );

// Get the container elements for the button sets selected
DataTable.Api.registerPlural( 'buttons().containers()', 'buttons().container()', function () {
        var jq = $();

        // jQuery will automatically reduce duplicates to a single entry
        $( this.each( function ( set ) {
                jq = jq.add( set.inst.container() );
        } ) );

        return jq;
} );

// Add a new button
DataTable.Api.register( 'button().add()', function ( idx, conf ) {
        if ( this.length === 1 ) {
                this[0].inst.add( idx, conf );
        }

        return this.button( idx );
} );

// Destroy the button sets selected
DataTable.Api.register( 'buttons().destroy()', function ( idx ) {
        this.pluck( 'inst' ).unique().each( function ( inst ) {
                inst.destroy();
        } );

        return this;
} );

// Remove a button
DataTable.Api.registerPlural( 'buttons().remove()', 'buttons().remove()', function () {
        // Need to split into prep and commit so the indexes remain constant during the remove
        this.each( function ( set ) {
                set.inst.removePrep( set.idx );
        } );

        this.pluck( 'inst' ).unique().each( function ( inst ) {
                inst.removeCommit();
        } );

        return this;
} );

// Information box that can be used by buttons
var _infoTimer;
DataTable.Api.register( 'buttons.info()', function ( title, message, time ) {
        var that = this;

        if ( title === false ) {
                $('#datatables_buttons_info').fadeOut( function () {
                        $(this).remove();
                } );
                clearTimeout( _infoTimer );
                _infoTimer = null;

                return this;
        }

        if ( _infoTimer ) {
                clearTimeout( _infoTimer );
        }

        if ( $('#datatables_buttons_info').length ) {
                $('#datatables_buttons_info').remove();
        }

        title = title ? '<h2>'+title+'</h2>' : '';

        $('<div id="datatables_buttons_info" class="dt-button-info"/>')
                .html( title )
                .append( $('<div/>')[ typeof message === 'string' ? 'html' : 'append' ]( message ) )
                .css( 'display', 'none' )
                .appendTo( 'body' )
                .fadeIn();

        if ( time !== undefined && time !== 0 ) {
                _infoTimer = setTimeout( function () {
                        that.buttons.info( false );
                }, time );
        }

        return this;
} );

// Get data from the table for export - this is common to a number of plug-in
// buttons so it is included in the Buttons core library
DataTable.Api.register( 'buttons.exportData()', function ( options ) {
        if ( this.context.length ) {
                return _exportData( new DataTable.Api( this.context[0] ), options );
        }
} );

var _exportData = function ( dt, inOpts )
{
        var config = $.extend( true, {}, {
                rows:          null,
                columns:       '',
                modifier:      {
                        search: 'applied',
                        order:  'applied'
                },
                orthogonal:    'display',
                stripHtml:     true,
                stripNewlines: true,
                trim:          true
        }, inOpts );

        var strip = function ( str ) {
                if ( typeof str !== 'string' ) {
                        return str;
                }

                if ( config.stripHtml ) {
                        str = str.replace( /<.*?>/g, '' );
                }

                if ( config.trim ) {
                        str = str.replace( /^\s+|\s+$/g, '' );
                }

                if ( config.stripNewlines ) {
                        str = str.replace( /\n/g, ' ' );
                }

                return str;
        };

        var header = dt.columns( config.columns ).indexes().map( function (idx, i) {
                return strip( dt.column( idx ).header().innerHTML );
        } ).toArray();

        var footer = dt.table().footer() ?
                dt.columns( config.columns ).indexes().map( function (idx, i) {
                        var el = dt.column( idx ).footer();
                        return el ?
                                strip( el.innerHTML ) :
                                '';
                } ).toArray() :
                null;

        var cells = dt
                .cells( config.rows, config.columns, config.modifier )
                .render( config.orthogonal )
                .toArray();
        var columns = header.length;
        var rows = cells.length / columns;
        var body = new Array( rows );
        var cellCounter = 0;

        for ( var i=0, ien=rows ; i<ien ; i++ ) {
                var row = new Array( columns );

                for ( var j=0 ; j<columns ; j++ ) {
                        row[j] = strip( cells[ cellCounter ] );
                        cellCounter++;
                }

                body[i] = row;
        }

        return {
                header: header,
                footer: footer,
                body:   body
        };
};


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * DataTables interface
 */

// Attach to DataTables objects for global access
$.fn.dataTable.Buttons = Buttons;
$.fn.DataTable.Buttons = Buttons;



// DataTables creation - check if the buttons have been defined for this table,
// they will have been if the `B` option was used in `dom`, otherwise we should
// create the buttons instance here so they can be inserted into the document
// using the API
$(document).on( 'init.dt.dtb', function (e, settings, json) {
        if ( e.namespace !== 'dt' ) {
                return;
        }

        var opts = settings.oInit.buttons || DataTable.defaults.buttons;

        if ( opts && ! settings._buttons ) {
                new Buttons( settings, opts ).container();
        }
} );

// DataTables `dom` feature option
DataTable.ext.feature.push( {
        fnInit: function( settings ) {
                var api = new DataTable.Api( settings );
                var opts = api.init().buttons;

                return new Buttons( api, opts ).container();
        },
        cFeature: "B"
} );


return Buttons;
}; // /factory


// Define as an AMD module if possible
if ( typeof define === 'function' && define.amd ) {
        define( ['jquery', 'datatables'], factory );
}
else if ( typeof exports === 'object' ) {
    // Node/CommonJS
    factory( require('jquery'), require('datatables') );
}
else if ( jQuery && !jQuery.fn.dataTable.Buttons ) {
        // Otherwise simply initialise as normal, stopping multiple evaluation
        factory( jQuery, jQuery.fn.dataTable );
}


})(window, document);