Subversion-Projekte lars-tiefland.cienc

/*!
 * HTML5 export buttons for Buttons and DataTables.
 * 2015 SpryMedia Ltd - datatables.net/license
 *
 * FileSaver.js (2015-05-07.2) - MIT license
 * Copyright © 2015 Eli Grey - http://eligrey.com
 */

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


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * FileSaver.js dependency
 */

/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */

var _saveAs = (function(view) {
        // IE <10 is explicitly unsupported
        if (typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
                return;
        }
        var
                  doc = view.document
                  // only get URL when necessary in case Blob.js hasn't overridden it yet
                , get_URL = function() {
                        return view.URL || view.webkitURL || view;
                }
                , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
                , can_use_save_link = "download" in save_link
                , click = function(node) {
                        var event = doc.createEvent("MouseEvents");
                        event.initMouseEvent(
                                "click", true, false, view, 0, 0, 0, 0, 0
                                , false, false, false, false, 0, null
                        );
                        node.dispatchEvent(event);
                }
                , webkit_req_fs = view.webkitRequestFileSystem
                , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem
                , throw_outside = function(ex) {
                        (view.setImmediate || view.setTimeout)(function() {
                                throw ex;
                        }, 0);
                }
                , force_saveable_type = "application/octet-stream"
                , fs_min_size = 0
                // See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and
                // https://github.com/eligrey/FileSaver.js/commit/485930a#commitcomment-8768047
                // for the reasoning behind the timeout and revocation flow
                , arbitrary_revoke_timeout = 500 // in ms
                , revoke = function(file) {
                        var revoker = function() {
                                if (typeof file === "string") { // file is an object URL
                                        get_URL().revokeObjectURL(file);
                                } else { // file is a File
                                        file.remove();
                                }
                        };
                        if (view.chrome) {
                                revoker();
                        } else {
                                setTimeout(revoker, arbitrary_revoke_timeout);
                        }
                }
                , dispatch = function(filesaver, event_types, event) {
                        event_types = [].concat(event_types);
                        var i = event_types.length;
                        while (i--) {
                                var listener = filesaver["on" + event_types[i]];
                                if (typeof listener === "function") {
                                        try {
                                                listener.call(filesaver, event || filesaver);
                                        } catch (ex) {
                                                throw_outside(ex);
                                        }
                                }
                        }
                }
                , auto_bom = function(blob) {
                        // prepend BOM for UTF-8 XML and text/* types (including HTML)
                        if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
                                return new Blob(["\ufeff", blob], {type: blob.type});
                        }
                        return blob;
                }
                , FileSaver = function(blob, name) {
                        blob = auto_bom(blob);
                        // First try a.download, then web filesystem, then object URLs
                        var
                                  filesaver = this
                                , type = blob.type
                                , blob_changed = false
                                , object_url
                                , target_view
                                , dispatch_all = function() {
                                        dispatch(filesaver, "writestart progress write writeend".split(" "));
                                }
                                // on any filesys errors revert to saving with object URLs
                                , fs_error = function() {
                                        // don't create more object URLs than needed
                                        if (blob_changed || !object_url) {
                                                object_url = get_URL().createObjectURL(blob);
                                        }
                                        if (target_view) {
                                                target_view.location.href = object_url;
                                        } else {
                                                var new_tab = view.open(object_url, "_blank");
                                                if (new_tab === undefined && typeof safari !== "undefined") {
                                                        //Apple do not allow window.open, see http://bit.ly/1kZffRI
                                                        view.location.href = object_url;
                                                }
                                        }
                                        filesaver.readyState = filesaver.DONE;
                                        dispatch_all();
                                        revoke(object_url);
                                }
                                , abortable = function(func) {
                                        return function() {
                                                if (filesaver.readyState !== filesaver.DONE) {
                                                        return func.apply(this, arguments);
                                                }
                                        };
                                }
                                , create_if_not_found = {create: true, exclusive: false}
                                , slice
                        ;
                        filesaver.readyState = filesaver.INIT;
                        if (!name) {
                                name = "download";
                        }
                        if (can_use_save_link) {
                                object_url = get_URL().createObjectURL(blob);
                                save_link.href = object_url;
                                save_link.download = name;
                                click(save_link);
                                filesaver.readyState = filesaver.DONE;
                                dispatch_all();
                                revoke(object_url);
                                return;
                        }
                        // Object and web filesystem URLs have a problem saving in Google Chrome when
                        // viewed in a tab, so I force save with application/octet-stream
                        // http://code.google.com/p/chromium/issues/detail?id=91158
                        // Update: Google errantly closed 91158, I submitted it again:
                        // https://code.google.com/p/chromium/issues/detail?id=389642
                        if (view.chrome && type && type !== force_saveable_type) {
                                slice = blob.slice || blob.webkitSlice;
                                blob = slice.call(blob, 0, blob.size, force_saveable_type);
                                blob_changed = true;
                        }
                        // Since I can't be sure that the guessed media type will trigger a download
                        // in WebKit, I append .download to the filename.
                        // https://bugs.webkit.org/show_bug.cgi?id=65440
                        if (webkit_req_fs && name !== "download") {
                                name += ".download";
                        }
                        if (type === force_saveable_type || webkit_req_fs) {
                                target_view = view;
                        }
                        if (!req_fs) {
                                fs_error();
                                return;
                        }
                        fs_min_size += blob.size;
                        req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {
                                fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {
                                        var save = function() {
                                                dir.getFile(name, create_if_not_found, abortable(function(file) {
                                                        file.createWriter(abortable(function(writer) {
                                                                writer.onwriteend = function(event) {
                                                                        target_view.location.href = file.toURL();
                                                                        filesaver.readyState = filesaver.DONE;
                                                                        dispatch(filesaver, "writeend", event);
                                                                        revoke(file);
                                                                };
                                                                writer.onerror = function() {
                                                                        var error = writer.error;
                                                                        if (error.code !== error.ABORT_ERR) {
                                                                                fs_error();
                                                                        }
                                                                };
                                                                "writestart progress write abort".split(" ").forEach(function(event) {
                                                                        writer["on" + event] = filesaver["on" + event];
                                                                });
                                                                writer.write(blob);
                                                                filesaver.abort = function() {
                                                                        writer.abort();
                                                                        filesaver.readyState = filesaver.DONE;
                                                                };
                                                                filesaver.readyState = filesaver.WRITING;
                                                        }), fs_error);
                                                }), fs_error);
                                        };
                                        dir.getFile(name, {create: false}, abortable(function(file) {
                                                // delete file if it already exists
                                                file.remove();
                                                save();
                                        }), abortable(function(ex) {
                                                if (ex.code === ex.NOT_FOUND_ERR) {
                                                        save();
                                                } else {
                                                        fs_error();
                                                }
                                        }));
                                }), fs_error);
                        }), fs_error);
                }
                , FS_proto = FileSaver.prototype
                , saveAs = function(blob, name) {
                        return new FileSaver(blob, name);
                }
        ;
        // IE 10+ (native saveAs)
        if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
                return function(blob, name) {
                        return navigator.msSaveOrOpenBlob(auto_bom(blob), name);
                };
        }

        FS_proto.abort = function() {
                var filesaver = this;
                filesaver.readyState = filesaver.DONE;
                dispatch(filesaver, "abort");
        };
        FS_proto.readyState = FS_proto.INIT = 0;
        FS_proto.WRITING = 1;
        FS_proto.DONE = 2;

        FS_proto.error =
        FS_proto.onwritestart =
        FS_proto.onprogress =
        FS_proto.onwrite =
        FS_proto.onabort =
        FS_proto.onerror =
        FS_proto.onwriteend =
                null;

        return saveAs;
}(window));



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

/**
 * 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;
};

/**
 * 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
        };
};

/**
 * Safari's data: support for creating and downloading files is really poor, so
 * various options need to be disabled in it. See
 * https://bugs.webkit.org/show_bug.cgi?id=102914
 * 
 * @return {Boolean} `true` if Safari
 */
var _isSafari = function ()
{
        return navigator.userAgent.indexOf('Safari') !== -1 &&
                navigator.userAgent.indexOf('Chrome') === -1 &&
                navigator.userAgent.indexOf('Opera') === -1;
};


// Excel - Pre-defined strings to build a minimal XLSX file
var excelStrings = {
        "_rels/.rels": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">\
        <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>\
</Relationships>',

        "xl/_rels/workbook.xml.rels": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">\
        <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/>\
</Relationships>',

        "[Content_Types].xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\
<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">\
        <Default Extension="xml" ContentType="application/xml"/>\
        <Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>\
        <Default Extension="jpeg" ContentType="image/jpeg"/>\
        <Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>\
        <Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>\
</Types>',

        "xl/workbook.xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\
<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">\
        <fileVersion appName="xl" lastEdited="5" lowestEdited="5" rupBuild="24816"/>\
        <workbookPr showInkAnnotation="0" autoCompressPictures="0"/>\
        <bookViews>\
                <workbookView xWindow="0" yWindow="0" windowWidth="25600" windowHeight="19020" tabRatio="500"/>\
        </bookViews>\
        <sheets>\
                <sheet name="Sheet1" sheetId="1" r:id="rId1"/>\
        </sheets>\
</workbook>',

        "xl/worksheets/sheet1.xml": '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\
<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac">\
        <sheetData>\
                __DATA__\
        </sheetData>\
</worksheet>'
};



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Buttons
 */

//
// Copy to clipboard
//
DataTable.ext.buttons.copyHtml5 = {
        className: 'buttons-copy buttons-html5',

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

        action: function ( e, dt, button, config ) {
                // This button is slightly sneaky as there is no HTML API to copy text
                // to a clipboard, so what it does is use the buttons information
                // element with an also completely hidden textarea that contains the
                // data to be copied. That is pre-selected so the user just needs to
                // activate their system clipboard.
                var newLine = _newLine( config );
                var output = _exportData( dt, config ).str;
                var message = $('<span>'+dt.i18n( 'buttons.copyKeys',
                                'Press <i>ctrl</i> or <i>\u2318</i> + <i>C</i> to copy the table data<br>to your system clipboard.<br><br>'+
                                'To cancel, click this message or press escape.' )+'</span>'
                        )
                        .append( $('<div/>')
                                .css( {
                                        height: 1,
                                        width: 1,
                                        overflow: 'hidden'
                                } )
                                .append(
                                        $('<textarea readonly/>').val( output )
                                )
                );

                dt.buttons.info( dt.i18n( 'buttons.copyTitle', 'Copy to clipboard' ), message, 0 );

                // Select the text so when the user activates their system clipboard
                // it will copy that text
                message.find('textarea')[0].focus();
                message.find('textarea')[0].select();

                // Event to hide the message when the user is done
                var container = $(message).closest('.dt-button-info');
                var close = function () {
                        container.off( 'click.buttons-copy' );
                        $(document).off( '.buttons-copy' );
                        dt.buttons.info( false );
                };

                container.on( 'click.buttons-copy', close );
                $(document)
                        .on( 'keydown.buttons-copy', function (e) {
                                if ( e.keyCode === 27 ) { // esc
                                        close();
                                }
                        } )
                        .on( 'copy.buttons-copy cut.buttons-copy', function () {
                                close();
                        } );
        },

        exportOptions: {},

        fieldSeparator: '\t',

        fieldBoundary: '',

        header: true,

        footer: false
};

//
// CSV export
//
DataTable.ext.buttons.csvHtml5 = {
        className: 'buttons-csv buttons-html5',

        available: function () {
                return window.FileReader !== undefined && window.Blob;
        },

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

        action: function ( e, dt, button, config ) {
                // Set the text
                var newLine = _newLine( config );
                var output = _exportData( dt, config ).str;

                _saveAs(
                        new Blob( [output], {type : 'text/csv'} ),
                        _filename( config )
                );
        },

        title: '*',

        extension: '.csv',

        exportOptions: {},

        fieldSeparator: ',',

        fieldBoundary: '"',

        header: true,

        footer: false
};

//
// Excel (xlsx) export
//
DataTable.ext.buttons.excelHtml5 = {
        className: 'buttons-excel buttons-html5',

        available: function () {
                return window.FileReader !== undefined && window.JSZip !== undefined && ! _isSafari();
        },

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

        action: function ( e, dt, button, config ) {
                // Set the text
                var xml = '';
                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 );
                }

                var zip           = new window.JSZip();
                var _rels         = zip.folder("_rels");
                var xl            = zip.folder("xl");
                var xl_rels       = zip.folder("xl/_rels");
                var xl_worksheets = zip.folder("xl/worksheets");

                zip.file(           '[Content_Types].xml', excelStrings['[Content_Types].xml'] );
                _rels.file(         '.rels',               excelStrings['_rels/.rels'] );
                xl.file(            'workbook.xml',        excelStrings['xl/workbook.xml'] );
                xl_rels.file(       'workbook.xml.rels',   excelStrings['xl/_rels/workbook.xml.rels'] );
                xl_worksheets.file( 'sheet1.xml',          excelStrings['xl/worksheets/sheet1.xml'].replace( '__DATA__', xml ) );

                _saveAs(
                        zip.generate( {type:"blob"} ),
                        _filename( config )
                );
        },

        title: '*',

        extension: '.xlsx',

        exportOptions: {},

        header: true,

        footer: false
};

//
// PDF export - using pdfMake - http://pdfmake.org
//
DataTable.ext.buttons.pdfHtml5 = {
        className: 'buttons-pdf buttons-html5',

        available: function () {
                return window.FileReader !== undefined && window.pdfMake;
        },

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

        action: function ( e, dt, button, config ) {
                var newLine = _newLine( config );
                var data = dt.buttons.exportData( config.exportOptions );
                var rows = [];

                if ( config.header ) {
                        rows.push( $.map( data.header, function ( d ) {
                                return {
                                        text: d,
                                        style: 'tableHeader'
                                };
                        } ) );
                }

                for ( var i=0, ien=data.body.length ; i<ien ; i++ ) {
                        rows.push( $.map( data.body[i], function ( d ) {
                                return {
                                        text: d,
                                        style: i % 2 ? 'tableBodyEven' : 'tableBodyOdd'
                                };
                        } ) );
                }

                if ( config.footer ) {
                        rows.push( $.map( data.footer, function ( d ) {
                                return {
                                        text: d,
                                        style: 'tableFooter'
                                };
                        } ) );
                }

                var doc = {
                        pageSize: config.pageSize,
                        pageOrientation: config.orientation,
                        content: [
                                {
                                        table: {
                                                headerRows: 1,
                                                body: rows
                                        },
                                        layout: 'noBorders'
                                }
                        ],
                        styles: {
                                tableHeader: {
                                        bold: true,
                                        fontSize: 11,
                                        color: 'white',
                                        fillColor: '#2d4154',
                                        alignment: 'center'
                                },
                                tableBodyEven: {},
                                tableBodyOdd: {
                                        fillColor: '#f3f3f3'
                                },
                                tableFooter: {
                                        bold: true,
                                        fontSize: 11,
                                        color: 'white',
                                        fillColor: '#2d4154'
                                },
                                title: {
                                        alignment: 'center',
                                        fontSize: 15
                                },
                                message: {}
                        },
                        defaultStyle: {
                                fontSize: 10
                        }
                };

                if ( config.message ) {
                        doc.content.unshift( {
                                text: config.message,
                                style: 'message',
                                margin: [ 0, 0, 0, 12 ]
                        } );
                }

                if ( config.title ) {
                        doc.content.unshift( {
                                text: _filename( config, false ),
                                style: 'title',
                                margin: [ 0, 0, 0, 12 ]
                        } );
                }

                if ( config.customize ) {
                        config.customize( doc );
                }

                var pdf = window.pdfMake.createPdf( doc );

                if ( config.download === 'open' && ! _isSafari() ) {
                        pdf.open();
                }
                else {
                        pdf.getBuffer( function (buffer) {
                                var blob = new Blob( [buffer], {type:'application/pdf'} );

                                _saveAs( blob, _filename( config ) );
                        } );
                }
        },

        title: '*',

        extension: '.pdf',

        exportOptions: {},

        orientation: 'portrait',

        pageSize: 'A4',

        header: true,

        footer: false,

        message: null,

        customize: null,

        download: 'download'
};


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