/*!
 * Flash export buttons for Buttons and DataTables.
 * 2015 SpryMedia Ltd - datatables.net/license
 *
 * ZeroClipbaord - MIT license
 * Copyright (c) 2012 Joseph Huckaby
 */

(function($, DataTable) {
"use strict";


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * ZeroClipboard dependency
 */

/*
 * ZeroClipboard 1.0.4 with modifications
 * Author: Joseph Huckaby
 * License: MIT
 *
 * Copyright (c) 2012 Joseph Huckaby
 */
var ZeroClipboard_TableTools = {
	version: "1.0.4-TableTools2",
	clients: {}, // registered upload clients on page, indexed by id
	moviePath: '', // URL to movie
	nextId: 1, // ID of next movie

	$: function(thingy) {
		// simple DOM lookup utility function
		if (typeof(thingy) == 'string') {
			thingy = document.getElementById(thingy);
		}
		if (!thingy.addClass) {
			// extend element with a few useful methods
			thingy.hide = function() { this.style.display = 'none'; };
			thingy.show = function() { this.style.display = ''; };
			thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; };
			thingy.removeClass = function(name) {
				this.className = this.className.replace( new RegExp("\\s*" + name + "\\s*"), " ").replace(/^\s+/, '').replace(/\s+$/, '');
			};
			thingy.hasClass = function(name) {
				return !!this.className.match( new RegExp("\\s*" + name + "\\s*") );
			};
		}
		return thingy;
	},

	setMoviePath: function(path) {
		// set path to ZeroClipboard.swf
		this.moviePath = path;
	},

	dispatch: function(id, eventName, args) {
		// receive event from flash movie, send to client
		var client = this.clients[id];
		if (client) {
			client.receiveEvent(eventName, args);
		}
	},

	register: function(id, client) {
		// register new client to receive events
		this.clients[id] = client;
	},

	getDOMObjectPosition: function(obj) {
		// get absolute coordinates for dom element
		var info = {
			left: 0,
			top: 0,
			width: obj.width ? obj.width : obj.offsetWidth,
			height: obj.height ? obj.height : obj.offsetHeight
		};

		if ( obj.style.width !== "" ) {
			info.width = obj.style.width.replace("px","");
		}

		if ( obj.style.height !== "" ) {
			info.height = obj.style.height.replace("px","");
		}

		while (obj) {
			info.left += obj.offsetLeft;
			info.top += obj.offsetTop;
			obj = obj.offsetParent;
		}

		return info;
	},

	Client: function(elem) {
		// constructor for new simple upload client
		this.handlers = {};

		// unique ID
		this.id = ZeroClipboard_TableTools.nextId++;
		this.movieId = 'ZeroClipboard_TableToolsMovie_' + this.id;

		// register client with singleton to receive flash events
		ZeroClipboard_TableTools.register(this.id, this);

		// create movie
		if (elem) {
			this.glue(elem);
		}
	}
};

ZeroClipboard_TableTools.Client.prototype = {

	id: 0, // unique ID for us
	ready: false, // whether movie is ready to receive events or not
	movie: null, // reference to movie object
	clipText: '', // text to copy to clipboard
	fileName: '', // default file save name
	action: 'copy', // action to perform
	handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor
	cssEffects: true, // enable CSS mouse effects on dom container
	handlers: null, // user event handlers
	sized: false,

	glue: function(elem, title) {
		// glue to DOM element
		// elem can be ID or actual DOM element object
		this.domElement = ZeroClipboard_TableTools.$(elem);

		// float just above object, or zIndex 99 if dom element isn't set
		var zIndex = 99;
		if (this.domElement.style.zIndex) {
			zIndex = parseInt(this.domElement.style.zIndex, 10) + 1;
		}

		// find X/Y position of domElement
		var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement);

		// create floating DIV above element
		this.div = document.createElement('div');
		var style = this.div.style;
		style.position = 'absolute';
		style.left = '0px';
		style.top = '0px';
		style.width = (box.width) + 'px';
		style.height = box.height + 'px';
		style.zIndex = zIndex;

		if ( typeof title != "undefined" && title !== "" ) {
			this.div.title = title;
		}
		if ( box.width !== 0 && box.height !== 0 ) {
			this.sized = true;
		}

		// style.backgroundColor = '#f00'; // debug
		if ( this.domElement ) {
			this.domElement.appendChild(this.div);
			this.div.innerHTML = this.getHTML( box.width, box.height ).replace(/&/g, '&');
		}
	},

	positionElement: function() {
		var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement);
		var style = this.div.style;

		style.position = 'absolute';
		//style.left = (this.domElement.offsetLeft)+'px';
		//style.top = this.domElement.offsetTop+'px';
		style.width = box.width + 'px';
		style.height = box.height + 'px';

		if ( box.width !== 0 && box.height !== 0 ) {
			this.sized = true;
		} else {
			return;
		}

		var flash = this.div.childNodes[0];
		flash.width = box.width;
		flash.height = box.height;
	},

	getHTML: function(width, height) {
		// return HTML for movie
		var html = '';
		var flashvars = 'id=' + this.id +
			'&width=' + width +
			'&height=' + height;

		if (navigator.userAgent.match(/MSIE/)) {
			// IE gets an OBJECT tag
			var protocol = location.href.match(/^https/i) ? 'https://' : 'http://';
			html += '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="'+protocol+'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0" width="'+width+'" height="'+height+'" id="'+this.movieId+'" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+ZeroClipboard_TableTools.moviePath+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><param name="wmode" value="transparent"/></object>';
		}
		else {
			// all other browsers get an EMBED tag
			html += '<embed id="'+this.movieId+'" src="'+ZeroClipboard_TableTools.moviePath+'" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+width+'" height="'+height+'" name="'+this.movieId+'" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'" wmode="transparent" />';
		}
		return html;
	},

	hide: function() {
		// temporarily hide floater offscreen
		if (this.div) {
			this.div.style.left = '-2000px';
		}
	},

	show: function() {
		// show ourselves after a call to hide()
		this.reposition();
	},

	destroy: function() {
		// destroy control and floater
		var that = this;

		if (this.domElement && this.div) {
			$(this.div).remove();

			this.domElement = null;
			this.div = null;

			$.each( ZeroClipboard_TableTools.clients, function ( id, client ) {
				if ( client === that ) {
					delete ZeroClipboard_TableTools.clients[ id ];
				}
			} );
		}
	},

	reposition: function(elem) {
		// reposition our floating div, optionally to new container
		// warning: container CANNOT change size, only position
		if (elem) {
			this.domElement = ZeroClipboard_TableTools.$(elem);
			if (!this.domElement) {
				this.hide();
			}
		}

		if (this.domElement && this.div) {
			var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement);
			var style = this.div.style;
			style.left = '' + box.left + 'px';
			style.top = '' + box.top + 'px';
		}
	},

	clearText: function() {
		// clear the text to be copy / saved
		this.clipText = '';
		if (this.ready) {
			this.movie.clearText();
		}
	},

	appendText: function(newText) {
		// append text to that which is to be copied / saved
		this.clipText += newText;
		if (this.ready) { this.movie.appendText(newText) ;}
	},

	setText: function(newText) {
		// set text to be copied to be copied / saved
		this.clipText = newText;
		if (this.ready) { this.movie.setText(newText) ;}
	},

	setFileName: function(newText) {
		// set the file name
		this.fileName = newText;
		if (this.ready) {
			this.movie.setFileName(newText);
		}
	},

	setAction: function(newText) {
		// set action (save or copy)
		this.action = newText;
		if (this.ready) {
			this.movie.setAction(newText);
		}
	},

	addEventListener: function(eventName, func) {
		// add user event listener for event
		// event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel
		eventName = eventName.toString().toLowerCase().replace(/^on/, '');
		if (!this.handlers[eventName]) {
			this.handlers[eventName] = [];
		}
		this.handlers[eventName].push(func);
	},

	setHandCursor: function(enabled) {
		// enable hand cursor (true), or default arrow cursor (false)
		this.handCursorEnabled = enabled;
		if (this.ready) {
			this.movie.setHandCursor(enabled);
		}
	},

	setCSSEffects: function(enabled) {
		// enable or disable CSS effects on DOM container
		this.cssEffects = !!enabled;
	},

	receiveEvent: function(eventName, args) {
		var self;

		// receive event from flash
		eventName = eventName.toString().toLowerCase().replace(/^on/, '');

		// special behavior for certain events
		switch (eventName) {
			case 'load':
				// movie claims it is ready, but in IE this isn't always the case...
				// bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function
				this.movie = document.getElementById(this.movieId);
				if (!this.movie) {
					self = this;
					setTimeout( function() { self.receiveEvent('load', null); }, 1 );
					return;
				}

				// firefox on pc needs a "kick" in order to set these in certain cases
				if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) {
					self = this;
					setTimeout( function() { self.receiveEvent('load', null); }, 100 );
					this.ready = true;
					return;
				}

				this.ready = true;
				this.movie.clearText();
				this.movie.appendText( this.clipText );
				this.movie.setFileName( this.fileName );
				this.movie.setAction( this.action );
				this.movie.setHandCursor( this.handCursorEnabled );
				break;

			case 'mouseover':
				if (this.domElement && this.cssEffects) {
					//this.domElement.addClass('hover');
					if (this.recoverActive) {
						this.domElement.addClass('active');
					}
				}
				break;

			case 'mouseout':
				if (this.domElement && this.cssEffects) {
					this.recoverActive = false;
					if (this.domElement.hasClass('active')) {
						this.domElement.removeClass('active');
						this.recoverActive = true;
					}
					//this.domElement.removeClass('hover');
				}
				break;

			case 'mousedown':
				if (this.domElement && this.cssEffects) {
					this.domElement.addClass('active');
				}
				break;

			case 'mouseup':
				if (this.domElement && this.cssEffects) {
					this.domElement.removeClass('active');
					this.recoverActive = false;
				}
				break;
		} // switch eventName

		if (this.handlers[eventName]) {
			for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) {
				var func = this.handlers[eventName][idx];

				if (typeof(func) == 'function') {
					// actual function reference
					func(this, args);
				}
				else if ((typeof(func) == 'object') && (func.length == 2)) {
					// PHP style object + method, i.e. [myObject, 'myMethod']
					func[0][ func[1] ](this, args);
				}
				else if (typeof(func) == 'string') {
					// name of function
					window[func](this, args);
				}
			} // foreach event handler defined
		} // user defined handler for event
	}
};

ZeroClipboard_TableTools.hasFlash = function ()
{
	try {
		var fo = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
		if (fo) {
			return true;
		}
	}
	catch (e) {
		if (
			navigator.mimeTypes &&
			navigator.mimeTypes['application/x-shockwave-flash'] !== undefined &&
			navigator.mimeTypes['application/x-shockwave-flash'].enabledPlugin
		) {
			return true;
		}
	}

	return false;
};

// For the Flash binding to work, ZeroClipboard_TableTools must be on the global
// object list
window.ZeroClipboard_TableTools = ZeroClipboard_TableTools;



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Local (private) functions
 */

/**
 * If a Buttons instance is initlaised before it is placed into the DOM, Flash
 * won't be able to bind to it, so we need to wait until it is available, this
 * method abstracts that out.
 *
 * @param {ZeroClipboard} flash ZeroClipboard instance
 * @param {jQuery} node  Button
 */
var _glue = function ( flash, node )
{
	var id = node.attr('id');

	if ( node.parents('html').length ) {
		flash.glue( node[0], '' );
	}
	else {
		setTimeout( function () {
			_glue( flash, node );
		}, 500 );
	}
};

/**
 * Get the title / file name for an exported file.
 *
 * @param {object}  config       Button configuration
 * @param {boolean} incExtension Include the file name extension
 */
var _filename = function ( config, incExtension )
{
	var title = config.title;

	if ( title.indexOf( '*' ) !== -1 ) {
		title = title.replace( '*', $('title').text() );
	}

	// Strip characters which the OS will object to
	title = title.replace(/[^a-zA-Z0-9_\u00A1-\uFFFF\.,\-_ !\(\)]/g, "");

	return incExtension === undefined || incExtension === true ?
		title+config.extension :
		title;
};

/**
 * Set the flash text. This has to be broken up into chunks as the Javascript /
 * Flash bridge has a size limit. There is no indication in the Flash
 * documentation what this is, and it probably depends upon the browser.
 * Experimentation shows that the point is around 50k when data starts to get
 * lost, so an 8K limit used here is safe.
 *
 * @param {ZeroClipboard} flash ZeroClipboard instance
 * @param {string}        data  Data to send to Flash
 */
var _setText = function ( flash, data )
{
	var parts = data.match(/[\s\S]{1,8192}/g) || [];

	flash.clearText();
	for ( var i=0, len=parts.length ; i<len ; i++ )
	{
		flash.appendText( parts[i] );
	}
};

/**
 * Get the newline character(s)
 *
 * @param {object}  config Button configuration
 * @return {string}        Newline character
 */
var _newLine = function ( config )
{
	return config.newline ?
		config.newline :
		navigator.userAgent.match(/Windows/) ?
			'\r\n' :
			'\n';
};

/**
 * Combine the data from the `buttons.exportData` method into a string that
 * will be used in the export file.
 *
 * @param  {DataTable.Api} dt     DataTables API instance
 * @param  {object}        config Button configuration
 * @return {object}               The data to export
 */
var _exportData = function ( dt, config )
{
	var newLine = _newLine( config );
	var data = dt.buttons.exportData( config.exportOptions );
	var join = function ( a ) {
		var s = '';
		var boundary = config.fieldBoundary;
		var separator = config.fieldSeparator;

		// If there is a field boundary, then we might need to escape it in
		// the source data
		for ( var i=0, ien=a.length ; i<ien ; i++ ) {
			if ( i > 0 ) {
				s += separator;
			}

			s += boundary ?
				boundary + a[i].replace( boundary, '\\'+boundary ) + boundary :
				a[i];
		}

		return s;
	};

	var header = config.header ? join( data.header )+newLine : '';
	var footer = config.footer ? newLine+join( data.footer ) : '';
	var body = [];

	for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
		body.push( join( data.body[i] ) );
	}

	return {
		str: header + body.join( newLine ) + footer,
		rows: body.length
	};
};


// Basic initialisation for the buttons is common between them
var flashButton = {
	available: function () {
		return ZeroClipboard_TableTools.hasFlash();
	},

	init: function ( dt, button, config ) {
		// Insert the Flash movie
		ZeroClipboard_TableTools.moviePath = DataTable.Buttons.swfPath;
		var flash = new ZeroClipboard_TableTools.Client();

		flash.setHandCursor( true );
		flash.addEventListener('mouseDown', function(client) {
			config._fromFlash = true;
			dt.button( button[0] ).trigger();
			config._fromFlash = false;
		} );

		_glue( flash, button );

		config._flash = flash;
	},

	destroy: function ( dt, button, config ) {
		config._flash.destroy();
	},

	fieldSeparator: ',',

	fieldBoundary: '"',

	exportOptions: {},

	title: '*',

	extension: '.csv',

	header: true,

	footer: false
};


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * DataTables options and methods
 */

// Set the default SWF path
DataTable.Buttons.swfPath = '//cdn.datatables.net/buttons/1.0.0/swf/flashExport.swf';

// Method to allow Flash buttons to be resized when made visible - as they are
// of zero height and width if initialised hidden
DataTable.Api.register( 'buttons.resize()', function () {
	$.each( ZeroClipboard_TableTools.clients, function ( i, client ) {
		if ( client.domElement !== undefined && client.domElement.parentNode ) {
			client.positionElement();
		}
	} );
} );


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Button definitions
 */

// Copy to clipboard
DataTable.ext.buttons.copyFlash = $.extend( {}, flashButton, {
	className: 'buttons-copy buttons-flash',

	text: function ( dt ) {
		return dt.i18n( 'buttons.copy', 'Copy' );
	},

	action: function ( e, dt, button, config ) {
		// Check that the trigger did actually occur due to a Flash activation
		if ( ! config._fromFlash ) {
			return;
		}

		var flash = config._flash;
		var data = _exportData( dt, config );

		flash.setAction( 'copy' );
		_setText( flash, data.str ); 

		dt.buttons.info(
			dt.i18n( 'buttons.copyTitle', 'Copy to clipboard' ),
			dt.i18n( 'buttons.copyInfo', {
				_: 'Copied %d rows to clipboard',
				1: 'Copied 1 row to clipboard'
			}, data.rows ),
			3000
		);
	},

	fieldSeparator: '\t',

	fieldBoundary: ''
} );

// CSV save file
DataTable.ext.buttons.csvFlash = $.extend( {}, flashButton, {
	className: 'buttons-csv buttons-flash',

	text: function ( dt ) {
		return dt.i18n( 'buttons.csv', 'CSV' );
	},

	action: function ( e, dt, button, config ) {
		// Set the text
		var flash = config._flash;
		var data = _exportData( dt, config );

		flash.setAction( 'csv' );
		flash.setFileName( _filename( config ) );
		_setText( flash, data.str );
	}
} );

// Excel save file - this is really a CSV file using UTF-8 that Excel can read
DataTable.ext.buttons.excelFlash = $.extend( {}, flashButton, {
	className: 'buttons-excel buttons-flash',

	text: function ( dt ) {
		return dt.i18n( 'buttons.excel', 'Excel' );
	},

	action: function ( e, dt, button, config ) {
		// Set the text
		var xml = '';
		var flash = config._flash;
		var data = dt.buttons.exportData( config.exportOptions );
		var addRow = function ( row ) {
			var cells = [];

			for ( var i=0, ien=row.length ; i<ien ; i++ ) {
				cells.push( $.isNumeric( row[i] ) ?
					'<c t="n"><v>'+row[i]+'</v></c>' :
					'<c t="inlineStr"><is><t>'+
						row[i].replace(/&(?!amp;)/g, '&amp;')+
					'</t></is></c>'
				);
			}

			return '<row>'+cells.join('')+'</row>';
		};

		if ( config.header ) {
			xml += addRow( data.header );
		}

		for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
			xml += addRow( data.body[i] );
		}

		if ( config.footer ) {
			xml += addRow( data.footer );
		}

		flash.setAction( 'excel' );
		flash.setFileName( _filename( config ) );
		_setText( flash, xml );
	},

	extension: '.xlsx'
} );

// PDF export
DataTable.ext.buttons.pdfFlash = $.extend( {}, flashButton, {
	className: 'buttons-pdf buttons-flash',

	text: function ( dt ) {
		return dt.i18n( 'buttons.pdf', 'PDF' );
	},

	action: function ( e, dt, button, config ) {
		// Set the text
		var flash = config._flash;
		var data = dt.buttons.exportData( config.exportOptions );
		var totalWidth = dt.table().node().offsetWidth;

		// Calculate the column width ratios for layout of the table in the PDF
		var ratios = dt.columns( config.columns ).indexes().map( function ( idx ) {
			return dt.column( idx ).header().offsetWidth / totalWidth;
		} );

		flash.setAction( 'pdf' );
		flash.setFileName( _filename( config ) );

		_setText( flash, JSON.stringify( {
			title:       _filename(config, false),
			message:     config.message,
			colWidth:    ratios.toArray(),
			orientation: config.orientation,
			size:        config.pageSize,
			header:      config.header ? data.header : null,
			footer:      config.footer ? data.footer : null,
			body:        data.body
		} ) );
	},

	extension: '.pdf',

	orientation: 'portrait',

	pageSize: 'A4',

	message: '',

	newline: '\n'
} );


})(jQuery, jQuery.fn.dataTable);