cashless2ecash

dataTables.buttons.js (40956B)

---

 /*! Buttons for DataTables 1.3.1
  * ©2016 SpryMedia Ltd - datatables.net/license
  */
 
 (function( factory ){
 	if ( typeof define === 'function' && define.amd ) {
 		// AMD
 		define( ['jquery', 'datatables.net'], function ( $ ) {
 			return factory( $, window, document );
 		} );
 	}
 	else if ( typeof exports === 'object' ) {
 		// CommonJS
 		module.exports = function (root, $) {
 			if ( ! root ) {
 				root = window;
 			}
 
 			if ( ! $ || ! $.fn.dataTable ) {
 				$ = require('datatables.net')(root, $).$;
 			}
 
 			return factory( $, root, root.document );
 		};
 	}
 	else {
 		// Browser
 		factory( jQuery, window, document );
 	}
 }(function( $, window, document, undefined ) {
 'use strict';
 var DataTable = $.fn.dataTable;
 
 
 // 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 )
 {
 	// If there is no config set it to an empty object
 	if ( typeof( config ) === 'undefined' ) {
 		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: [],
 		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  {node} node Button element
 	 * @param  {function} action Function to set
 	 * @return {Buttons} Self for chaining
 	 */
 	action: function ( node, action )
 	{
 		var button = this._nodeToButton( node );
 
 		if ( action === undefined ) {
 			return button.conf.action;
 		}
 
 		button.conf.action = action;
 
 		return this;
 	},
 
 	/**
 	 * Add an active class to the button to make to look active or get current
 	 * active state.
 	 * @param  {node} node Button element
 	 * @param  {boolean} [flag] Enable / disable flag
 	 * @return {Buttons} Self for chaining or boolean for getter
 	 */
 	active: function ( node, flag ) {
 		var button = this._nodeToButton( node );
 		var klass = this.c.dom.button.active;
 		var jqNode = $(button.node);
 
 		if ( flag === undefined ) {
 			return jqNode.hasClass( klass );
 		}
 
 		jqNode.toggleClass( klass, flag === undefined ? true : flag );
 
 		return this;
 	},
 
 	/**
 	 * Add a new button
 	 * @param {object} config Button configuration object, base string name or function
 	 * @param {int|string} [idx] Button index for where to insert the button
 	 * @return {Buttons} Self for chaining
 	 */
 	add: function ( config, idx )
 	{
 		var buttons = this.s.buttons;
 
 		if ( typeof idx === 'string' ) {
 			var split = idx.split('-');
 			var base = this.s;
 
 			for ( var i=0, ien=split.length-1 ; i<ien ; i++ ) {
 				base = base.buttons[ split[i]*1 ];
 			}
 
 			buttons = base.buttons;
 			idx = split[ split.length-1 ]*1;
 		}
 
 		this._expandButton( buttons, config, false, idx );
 		this._draw();
 
 		return this;
 	},
 
 	/**
 	 * Get the container node for the buttons
 	 * @return {jQuery} Buttons node
 	 */
 	container: function ()
 	{
 		return this.dom.container;
 	},
 
 	/**
 	 * Disable a button
 	 * @param  {node} node Button node
 	 * @return {Buttons} Self for chaining
 	 */
 	disable: function ( node ) {
 		var button = this._nodeToButton( node );
 
 		$(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). Take a copy as the array is modified by `remove`
 		var buttons = this.s.buttons.slice();
 		var i, ien;
 		
 		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
 			this.remove( buttons[i].node );
 		}
 
 		// 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  {node} node Button node
 	 * @param  {boolean} [flag=true] Enable / disable flag
 	 * @return {Buttons} Self for chaining
 	 */
 	enable: function ( node, flag )
 	{
 		if ( flag === false ) {
 			return this.disable( node );
 		}
 
 		var button = this._nodeToButton( node );
 		$(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  {node} node Button node
 	 * @return {jQuery} Button element
 	 */
 	node: function ( node )
 	{
 		var button = this._nodeToButton( node );
 		return $(button.node);
 	},
 
 	/**
 	 * Set / get a processing class on the selected button
 	 * @param  {boolean} flag true to add, false to remove, undefined to get
 	 * @return {boolean|Buttons} Getter value or this if a setter.
 	 */
 	processing: function ( node, flag )
 	{
 		var button = this._nodeToButton( node );
 
 		if ( flag === undefined ) {
 			return $(button.node).hasClass( 'processing' );
 		}
 
 		$(button.node).toggleClass( 'processing', flag );
 
 		return this;
 	},
 
 	/**
 	 * Remove a button.
 	 * @param  {node} node Button node
 	 * @return {Buttons} Self for chaining
 	 */
 	remove: function ( node )
 	{
 		var button = this._nodeToButton( node );
 		var host = this._nodeToHost( node );
 		var dt = this.s.dt;
 
 		// Remove any child buttons first
 		if ( button.buttons.length ) {
 			for ( var i=button.buttons.length-1 ; i>=0 ; i-- ) {
 				this.remove( button.buttons[i].node );
 			}
 		}
 
 		// Allow the button to remove event handlers, etc
 		if ( button.conf.destroy ) {
 			button.conf.destroy.call( dt.button(node), dt, $(node), button.conf );
 		}
 
 		this._removeKey( button.conf );
 
 		$(button.node).remove();
 
 		var idx = $.inArray( button, host );
 		host.splice( idx, 1 );
 
 		return this;
 	},
 
 	/**
 	 * Get the text for a button
 	 * @param  {int|string} node Button index
 	 * @return {string} Button text
 	 *//**
 	 * Set the text for a button
 	 * @param  {int|string|function} node Button index
 	 * @param  {string} label Text
 	 * @return {Buttons} Self for chaining
 	 */
 	text: function ( node, label )
 	{
 		var button = this._nodeToButton( node );
 		var buttonLiner = this.c.dom.collection.buttonLiner;
 		var linerTag = button.inCollection && buttonLiner && buttonLiner.tag ?
 			buttonLiner.tag :
 			this.c.dom.buttonLiner.tag;
 		var dt = this.s.dt;
 		var jqNode = $(button.node);
 		var text = function ( opt ) {
 			return typeof opt === 'function' ?
 				opt( dt, jqNode, button.conf ) :
 				opt;
 		};
 
 		if ( label === undefined ) {
 			return text( button.conf.text );
 		}
 
 		button.conf.text = label;
 
 		if ( linerTag ) {
 			jqNode.children( linerTag ).html( text(label) );
 		}
 		else {
 			jqNode.html( text(label) );
 		}
 
 		return this;
 	},
 
 
 	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 	 * Constructor
 	 */
 
 	/**
 	 * Buttons constructor
 	 * @private
 	 */
 	_constructor: function ()
 	{
 		var that = this;
 		var dt = this.s.dt;
 		var dtSettings = dt.settings()[0];
 		var buttons =  this.c.buttons;
 
 		if ( ! dtSettings._buttons ) {
 			dtSettings._buttons = [];
 		}
 
 		dtSettings._buttons.push( {
 			inst: this,
 			name: this.c.name
 		} );
 
 		for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
 			this.add( buttons[i] );
 		}
 
 		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} conf Resolved button configuration object
 	 * @private
 	 */
 	_addKey: function ( conf )
 	{
 		if ( conf.key ) {
 			this.s.listenKeys += $.isPlainObject( conf.key ) ?
 				conf.key.key :
 				conf.key;
 		}
 	},
 
 	/**
 	 * Insert the buttons into the container. Call without parameters!
 	 * @param  {node} [container] Recursive only - Insert point
 	 * @param  {array} [buttons] Recursive only - Buttons array
 	 * @private
 	 */
 	_draw: function ( container, buttons )
 	{
 		if ( ! container ) {
 			container = this.dom.container;
 			buttons = this.s.buttons;
 		}
 
 		container.children().detach();
 
 		for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
 			container.append( buttons[i].inserter );
 
 			if ( buttons[i].buttons && buttons[i].buttons.length ) {
 				this._draw( buttons[i].collection, buttons[i].buttons );
 			}
 		}
 	},
 
 	/**
 	 * Create buttons from an array of buttons
 	 * @param  {array} attachTo Buttons array to attach to
 	 * @param  {object} button Button definition
 	 * @param  {boolean} inCollection true if the button is in a collection
 	 * @private
 	 */
 	_expandButton: function ( attachTo, button, inCollection, attachPoint )
 	{
 		var dt = this.s.dt;
 		var buttonCounter = 0;
 		var buttons = ! $.isArray( button ) ?
 			[ button ] :
 			button;
 
 		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._expandButton( attachTo, conf, inCollection, attachPoint );
 				continue;
 			}
 
 			var built = this._buildButton( conf, inCollection );
 			if ( ! built ) {
 				continue;
 			}
 
 			if ( attachPoint !== undefined ) {
 				attachTo.splice( attachPoint, 0, built );
 				attachPoint++;
 			}
 			else {
 				attachTo.push( built );
 			}
 
 			if ( built.conf.buttons ) {
 				var collectionDom = this.c.dom.collection;
 				built.collection = $('<'+collectionDom.tag+'/>')
 					.addClass( collectionDom.className )
 					.attr( 'role', 'menu') ;
 				built.conf._collection = built.collection;
 
 				this._expandButton( built.buttons, built.conf.buttons, true, attachPoint );
 			}
 
 			// init call is made here, rather than buildButton as it needs to
 			// be selectable, and for that it needs to be in the buttons array
 			if ( conf.init ) {
 				conf.init.call( dt.button( built.node ), dt, $(built.node), conf );
 			}
 
 			buttonCounter++;
 		}
 	},
 
 	/**
 	 * Create an individual button
 	 * @param  {object} config            Resolved button configuration
 	 * @param  {boolean} inCollection `true` if a collection button
 	 * @return {jQuery} Created button node (jQuery)
 	 * @private
 	 */
 	_buildButton: function ( config, inCollection )
 	{
 		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 ( inCollection && collectionDom.button ) {
 			buttonDom = collectionDom.button;
 		}
 
 		if ( inCollection && 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 action = function ( e, dt, button, config ) {
 			config.action.call( dt.button( button ), e, dt, button, config );
 
 			$(dt.table().node()).triggerHandler( 'buttons-action.dt', [
 				dt.button( button ), dt, button, config 
 			] );
 		};
 
 		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 ) {
 					action( e, dt, button, config );
 				}
 
 				button.blur();
 			} )
 			.on( 'keyup.dtb', function (e) {
 				if ( e.keyCode === 13 ) {
 					if ( ! button.hasClass( buttonDom.disabled ) && config.action ) {
 						action( e, dt, button, config );
 					}
 				}
 			} );
 
 		// Make `a` tags act like a link
 		if ( buttonDom.tag.toLowerCase() === 'a' ) {
 			button.attr( 'href', '#' );
 		}
 
 		if ( linerDom.tag ) {
 			var liner = $('<'+linerDom.tag+'/>')
 				.html( text( config.text ) )
 				.addClass( linerDom.className );
 
 			if ( linerDom.tag.toLowerCase() === 'a' ) {
 				liner.attr( 'href', '#' );
 			}
 
 			button.append( liner );
 		}
 		else {
 			button.html( text( config.text ) );
 		}
 
 		if ( config.enabled === false ) {
 			button.addClass( buttonDom.disabled );
 		}
 
 		if ( config.className ) {
 			button.addClass( config.className );
 		}
 
 		if ( config.titleAttr ) {
 			button.attr( 'title', text( config.titleAttr ) );
 		}
 
 		if ( ! config.namespace ) {
 			config.namespace = '.dt-button-'+(_buttonCounter++);
 		}
 
 		var buttonContainer = this.c.dom.buttonContainer;
 		var inserter;
 		if ( buttonContainer && buttonContainer.tag ) {
 			inserter = $('<'+buttonContainer.tag+'/>')
 				.addClass( buttonContainer.className )
 				.append( button );
 		}
 		else {
 			inserter = button;
 		}
 
 		this._addKey( config );
 
 		return {
 			conf:         config,
 			node:         button.get(0),
 			inserter:     inserter,
 			buttons:      [],
 			inCollection: inCollection,
 			collection:   null
 		};
 	},
 
 	/**
 	 * Get the button object from a node (recursive)
 	 * @param  {node} node Button node
 	 * @param  {array} [buttons] Button array, uses base if not defined
 	 * @return {object} Button object
 	 * @private
 	 */
 	_nodeToButton: function ( node, buttons )
 	{
 		if ( ! buttons ) {
 			buttons = this.s.buttons;
 		}
 
 		for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
 			if ( buttons[i].node === node ) {
 				return buttons[i];
 			}
 
 			if ( buttons[i].buttons.length ) {
 				var ret = this._nodeToButton( node, buttons[i].buttons );
 
 				if ( ret ) {
 					return ret;
 				}
 			}
 		}
 	},
 
 	/**
 	 * Get container array for a button from a button node (recursive)
 	 * @param  {node} node Button node
 	 * @param  {array} [buttons] Button array, uses base if not defined
 	 * @return {array} Button's host array
 	 * @private
 	 */
 	_nodeToHost: function ( node, buttons )
 	{
 		if ( ! buttons ) {
 			buttons = this.s.buttons;
 		}
 
 		for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
 			if ( buttons[i].node === node ) {
 				return buttons;
 			}
 
 			if ( buttons[i].buttons.length ) {
 				var ret = this._nodeToHost( node, buttons[i].buttons );
 
 				if ( ret ) {
 					return ret;
 				}
 			}
 		}
 	},
 
 	/**
 	 * Handle a key press - determine if any button's key configured matches
 	 * what was typed and trigger the action if so.
 	 * @param  {string} character The character pressed
 	 * @param  {object} e Key event that triggered this call
 	 * @private
 	 */
 	_keypress: function ( character, e )
 	{
 		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();
 			}
 		};
 
 		var recurse = function ( a ) {
 			for ( var i=0, ien=a.length ; i<ien ; i++ ) {
 				run( a[i].conf, a[i].node );
 
 				if ( a[i].buttons.length ) {
 					recurse( a[i].buttons );
 				}
 			}
 		};
 
 		recurse( this.s.buttons );
 	},
 
 	/**
 	 * Remove a key from the key listener for this instance (to be used when a
 	 * button is removed)
 	 * @param  {object} conf Button configuration
 	 * @private
 	 */
 	_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} conf Button config to resolve
 	 * @return {object} Button configuration
 	 * @private
 	 */
 	_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 ( base === undefined ) {
 					return;
 				}
 
 				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
 			if ( ! _dtButtons[ conf.extend ] ) {
 				throw 'Cannot extend unknown button type: '+conf.extend;
 			}
 
 			var objArray = toConfObject( _dtButtons[ conf.extend ] );
 			if ( $.isArray( objArray ) ) {
 				return objArray;
 			}
 			else if ( ! objArray ) {
 				// This is a little brutal as it might be possible to have a
 				// valid button without the extend, but if there is no extend
 				// then the host button would be acting in an undefined state
 				return false;
 			}
 
 			// 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)
 					.removeClass( className )
 					.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 nodeBuilder = function ( a, buttons, baseIdx ) {
 		var button;
 		var idx;
 
 		for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
 			button = buttons[i];
 
 			if ( button ) {
 				idx = baseIdx !== undefined ?
 					baseIdx+i :
 					i+'';
 
 				a.push( {
 					node: button.node,
 					name: button.conf.name,
 					idx:  idx
 				} );
 
 				if ( button.buttons ) {
 					nodeBuilder( a, button.buttons, idx+'-' );
 				}
 			}
 		}
 	};
 
 	var run = function ( selector, inst ) {
 		var i, ien;
 		var buttons = [];
 		nodeBuilder( buttons, inst.s.buttons );
 
 		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,
 					node: buttons[i].node
 				} );
 			}
 		}
 		else if ( typeof selector === 'number' ) {
 			// Main button index selector
 			ret.push( {
 				inst: inst,
 				node: inst.s.buttons[ selector ].node
 			} );
 		}
 		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
 				var indexes = $.map( buttons, function (v) {
 					return v.idx;
 				} );
 
 				ret.push( {
 					inst: inst,
 					node: buttons[ $.inArray( selector, indexes ) ].node
 				} );
 			}
 			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,
 							node: buttons[i].node
 						} );
 					}
 				}
 			}
 			else {
 				// jQuery selector on the nodes
 				$( nodes ).filter( selector ).each( function () {
 					ret.push( {
 						inst: inst,
 						node: this
 					} );
 				} );
 			}
 		}
 		else if ( typeof selector === 'object' && selector.nodeName ) {
 			// Node selector
 			var idx = $.inArray( selector, nodes );
 
 			if ( idx !== -1 ) {
 				ret.push( {
 					inst: inst,
 					node: 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 = '1.3.1';
 
 
 $.extend( _dtButtons, {
 	collection: {
 		text: function ( dt ) {
 			return dt.i18n( 'buttons.collection', 'Collection' );
 		},
 		className: 'buttons-collection',
 		action: function ( e, dt, button, config ) {
 			var host = button;
 			var hostOffset = host.offset();
 			var tableContainer = $( dt.table().container() );
 			var multiLevel = false;
 
 			// Remove any old collection
 			if ( $('div.dt-button-background').length ) {
 				multiLevel = $('.dt-button-collection').offset();
 				$('body').trigger( 'click.dtb-collection' );
 			}
 
 			config._collection
 				.addClass( config.collectionLayout )
 				.css( 'display', 'none' )
 				.appendTo( 'body' )
 				.fadeIn( config.fade );
 
 			var position = config._collection.css( 'position' );
 
 			if ( multiLevel && position === 'absolute' ) {
 				config._collection.css( {
 					top: multiLevel.top,
 					left: multiLevel.left
 				} );
 			}
 			else if ( 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 () {
 				// This is bonkers, but if we don't have a click listener on the
 				// background element, iOS Safari will ignore the body click
 				// listener below. An empty function here is all that is
 				// required to make it work...
 				$('div.dt-button-background').on( 'click.dtb-collection', function () {} );
 
 				$('body').on( 'click.dtb-collection', function (e) {
 					// andSelf is deprecated in jQ1.8, but we want 1.7 compat
 					var back = $.fn.addBack ? 'addBack' : 'andSelf';
 
 					if ( ! $(e.target).parents()[back]().filter( config._collection ).length ) {
 						config._collection
 							.fadeOut( config.fade, function () {
 								config._collection.detach();
 							} );
 
 						$('div.dt-button-background').off( 'click.dtb-collection' );
 						Buttons.background( false, config.backgroundClassName, config.fade );
 
 						$('body').off( 'click.dtb-collection' );
 						dt.off( 'buttons-action.b-internal' );
 					}
 				} );
 			}, 10 );
 
 			if ( config.autoClose ) {
 				dt.on( 'buttons-action.b-internal', function () {
 					$('div.dt-button-background').click();
 				} );
 			}
 		},
 		background: true,
 		collectionLayout: '',
 		backgroundClassName: 'dt-button-background',
 		autoClose: false,
 		fade: 400
 	},
 	copy: function ( dt, conf ) {
 		if ( _dtButtons.copyHtml5 ) {
 			return 'copyHtml5';
 		}
 		if ( _dtButtons.copyFlash && _dtButtons.copyFlash.available( dt, conf ) ) {
 			return 'copyFlash';
 		}
 	},
 	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';
 		}
 	},
 	pageLength: function ( dt ) {
 		var lengthMenu = dt.settings()[0].aLengthMenu;
 		var vals = $.isArray( lengthMenu[0] ) ? lengthMenu[0] : lengthMenu;
 		var lang = $.isArray( lengthMenu[0] ) ? lengthMenu[1] : lengthMenu;
 		var text = function ( dt ) {
 			return dt.i18n( 'buttons.pageLength', {
 				"-1": 'Show all rows',
 				_:    'Show %d rows'
 			}, dt.page.len() );
 		};
 
 		return {
 			extend: 'collection',
 			text: text,
 			className: 'buttons-page-length',
 			autoClose: true,
 			buttons: $.map( vals, function ( val, i ) {
 				return {
 					text: lang[i],
 					className: 'button-page-length',
 					action: function ( e, dt ) {
 						dt.page.len( val ).draw();
 					},
 					init: function ( dt, node, conf ) {
 						var that = this;
 						var fn = function () {
 							that.active( dt.page.len() === val );
 						};
 
 						dt.on( 'length.dt'+conf.namespace, fn );
 						fn();
 					},
 					destroy: function ( dt, node, conf ) {
 						dt.off( 'length.dt'+conf.namespace );
 					}
 				};
 			} ),
 			init: function ( dt, node, conf ) {
 				var that = this;
 				dt.on( 'length.dt'+conf.namespace, function () {
 					that.text( text( dt ) );
 				} );
 			},
 			destroy: function ( dt, node, conf ) {
 				dt.off( 'length.dt'+conf.namespace );
 			}
 		};
 	}
 } );
 
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  * 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;
 	}
 
 	this.selector.buttonGroup = group;
 
 	var res = this.iterator( true, 'table', function ( ctx ) {
 		if ( ctx._buttons ) {
 			return Buttons.buttonSelector(
 				Buttons.instanceSelector( group, ctx._buttons ),
 				selector
 			);
 		}
 	}, true );
 
 	res._groupSelector = group;
 	return res;
 } );
 
 // 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.registerPlural( 'buttons().active()', 'button().active()', function ( flag ) {
 	if ( flag === undefined ) {
 		return this.map( function ( set ) {
 			return set.inst.active( set.node );
 		} );
 	}
 
 	return this.each( function ( set ) {
 		set.inst.active( set.node, 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.node );
 		} );
 	}
 
 	return this.each( function ( set ) {
 		set.inst.action( set.node, action );
 	} );
 } );
 
 // Enable / disable buttons
 DataTable.Api.register( ['buttons().enable()', 'button().enable()'], function ( flag ) {
 	return this.each( function ( set ) {
 		set.inst.enable( set.node, flag );
 	} );
 } );
 
 // Disable buttons
 DataTable.Api.register( ['buttons().disable()', 'button().disable()'], function () {
 	return this.each( function ( set ) {
 		set.inst.disable( set.node );
 	} );
 } );
 
 // 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.node ) );
 	} ) );
 
 	return jq;
 } );
 
 // Get / set button processing state
 DataTable.Api.registerPlural( 'buttons().processing()', 'button().processing()', function ( flag ) {
 	if ( flag === undefined ) {
 		return this.map( function ( set ) {
 			return set.inst.processing( set.node );
 		} );
 	}
 
 	return this.each( function ( set ) {
 		set.inst.processing( set.node, flag );
 	} );
 } );
 
 // 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.node );
 		} );
 	}
 
 	return this.each( function ( set ) {
 		set.inst.text( set.node, label );
 	} );
 } );
 
 // Trigger a button's action
 DataTable.Api.registerPlural( 'buttons().trigger()', 'button().trigger()', function () {
 	return this.each( function ( set ) {
 		set.inst.node( set.node ).trigger( 'click' );
 	} );
 } );
 
 // Get the container elements
 DataTable.Api.registerPlural( 'buttons().containers()', 'buttons().container()', function () {
 	var jq = $();
 	var groupSelector = this._groupSelector;
 
 	// We need to use the group selector directly, since if there are no buttons
 	// the result set will be empty
 	this.iterator( true, 'table', function ( ctx ) {
 		if ( ctx._buttons ) {
 			var insts = Buttons.instanceSelector( groupSelector, ctx._buttons );
 
 			for ( var i=0, ien=insts.length ; i<ien ; i++ ) {
 				jq = jq.add( insts[i].container() );
 			}
 		}
 	} );
 
 	return jq;
 } );
 
 // Add a new button
 DataTable.Api.register( 'button().add()', function ( idx, conf ) {
 	var ctx = this.context;
 
 	// Don't use `this` as it could be empty - select the instances directly
 	if ( ctx.length ) {
 		var inst = Buttons.instanceSelector( this._groupSelector, ctx[0]._buttons );
 
 		if ( inst.length ) {
 			inst[0].add( conf, idx );
 		}
 	}
 
 	return this.button( this._groupSelector, idx );
 } );
 
 // Destroy the button sets selected
 DataTable.Api.register( 'buttons().destroy()', function () {
 	this.pluck( 'inst' ).unique().each( function ( inst ) {
 		inst.destroy();
 	} );
 
 	return this;
 } );
 
 // Remove a button
 DataTable.Api.registerPlural( 'buttons().remove()', 'buttons().remove()', function () {
 	this.each( function ( set ) {
 		set.inst.remove( set.node );
 	} );
 
 	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 _exportTextarea = $('<textarea/>')[0];
 var _exportData = function ( dt, inOpts )
 {
 	var config = $.extend( true, {}, {
 		rows:           null,
 		columns:        '',
 		modifier:       {
 			search: 'applied',
 			order:  'applied'
 		},
 		orthogonal:     'display',
 		stripHtml:      true,
 		stripNewlines:  true,
 		decodeEntities: true,
 		trim:           true,
 		format:         {
 			header: function ( d ) {
 				return strip( d );
 			},
 			footer: function ( d ) {
 				return strip( d );
 			},
 			body: function ( d ) {
 				return strip( d );
 			}
 		}
 	}, inOpts );
 
 	var strip = function ( str ) {
 		if ( typeof str !== 'string' ) {
 			return str;
 		}
 
 		// Always remove script tags
 		str = str.replace( /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '' );
 
 		if ( config.stripHtml ) {
 			str = str.replace( /<[^>]*>/g, '' );
 		}
 
 		if ( config.trim ) {
 			str = str.replace( /^\s+|\s+$/g, '' );
 		}
 
 		if ( config.stripNewlines ) {
 			str = str.replace( /\n/g, ' ' );
 		}
 
 		if ( config.decodeEntities ) {
 			_exportTextarea.innerHTML = str;
 			str = _exportTextarea.value;
 		}
 
 		return str;
 	};
 
 
 	var header = dt.columns( config.columns ).indexes().map( function (idx) {
 		var el = dt.column( idx ).header();
 		return config.format.header( el.innerHTML, idx, el );
 	} ).toArray();
 
 	var footer = dt.table().footer() ?
 		dt.columns( config.columns ).indexes().map( function (idx) {
 			var el = dt.column( idx ).footer();
 			return config.format.footer( el ? el.innerHTML : '', idx, el );
 		} ).toArray() :
 		null;
 
 	var rowIndexes = dt.rows( config.rows, config.modifier ).indexes().toArray();
 	var selectedCells = dt.cells( rowIndexes, config.columns );
 	var cells = selectedCells
 		.render( config.orthogonal )
 		.toArray();
 	var cellNodes = selectedCells
 		.nodes()
 		.toArray();
 
 	var columns = header.length;
 	var rows = columns > 0 ? cells.length / columns : 0;
 	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] = config.format.body( cells[ cellCounter ], i, j, cellNodes[ 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. Listen for `init` for compatibility with pre 1.10.10, but to
 // be removed in future.
 $(document).on( 'init.dt plugin-init.dt', function (e, settings) {
 	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 || DataTable.defaults.buttons;
 
 		return new Buttons( api, opts ).container();
 	},
 	cFeature: "B"
 } );
 
 
 return Buttons;
 }));