tablesorter/js/widgets/widget-output.js

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2014-07-17 17:40:11 +00:00
/* Output widget (beta) for TableSorter 7/17/2014 (v2.17.5)
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* Requires tablesorter v2.8+ and jQuery 1.7+
* Modified from:
* HTML Table to CSV: http://www.kunalbabre.com/projects/table2CSV.php (License unknown?)
* Download-File-JS: https://github.com/PixelsCommander/Download-File-JS (http://www.apache.org/licenses/LICENSE-2.0)
*/
/*jshint browser:true, jquery:true, unused:false */
/*global jQuery: false */
;(function($){
"use strict";
var ts = $.tablesorter,
output = ts.output = {
event : 'outputTable',
// wrap line breaks & tabs in quotes
regexQuote : /([\n\t]|<[^<]+>)/, // test
regexBR : /(<br([\s\/])?>|\n)/g, // replace
regexIMG : /<img[^>]+alt\s*=\s*['"]([^'"]+)['"][^>]*>/i, // match
regexHTML : /<[^<]+>/g, // replace
replaceCR : '\\n',
replaceTab : '\\t',
popupTitle : 'Output',
popupStyle : 'width:100%;height:100%;', // for textarea
message : 'Your device does not support downloading. Please try again in desktop browser.',
init : function(c) {
c.$table
.off(output.event)
.on(output.event, function(){
// explicitly use table.config.widgetOptions because we want
// the most up-to-date values; not the "wo" from initialization
output.process(c, c.widgetOptions);
});
},
processRow: function(c, $rows, isHeader, isJSON) {
var $this, row, col, rowlen, collen, txt,
wo = c.widgetOptions,
tmpRow = [],
dupe = wo.output_duplicateSpans,
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addSpanIndex = isHeader && isJSON && wo.output_headerRows && $.isFunction(wo.output_callbackJSON),
cellIndex = 0;
$rows.each(function(rowIndex) {
if (!tmpRow[rowIndex]) { tmpRow[rowIndex] = []; }
cellIndex = 0;
$(this).children().each(function(){
$this = $(this);
// process rowspans
if ($this.filter('[rowspan]').length) {
rowlen = parseInt( $this.attr('rowspan'), 10) - 1;
txt = output.formatData( wo, $this.attr(wo.output_dataAttrib) || $this.html(), isHeader );
for (row = 1; row <= rowlen; row++) {
if (!tmpRow[rowIndex + row]) { tmpRow[rowIndex + row] = []; }
tmpRow[rowIndex + row][cellIndex] = isHeader ? txt : dupe ? txt : '';
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}
}
// process colspans
if ($this.filter('[colspan]').length) {
collen = parseInt( $this.attr('colspan'), 10) - 1;
txt = output.formatData( wo, $this.attr(wo.output_dataAttrib) || $this.html(), isHeader );
for (col = 1; col <= collen; col++) {
// if we're processing the header & making JSON, the header names need to be unique
if ($this.filter('[rowspan]').length) {
rowlen = parseInt( $this.attr('rowspan'), 10);
for (row = 0; row < rowlen; row++) {
if (!tmpRow[rowIndex + row]) { tmpRow[rowIndex + row] = []; }
tmpRow[rowIndex + row][cellIndex + col] = addSpanIndex ?
wo.output_callbackJSON($this, txt, cellIndex + col) || txt + '(' + (cellIndex + col) + ')' : isHeader ? txt : dupe ? txt : '';
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}
} else {
tmpRow[rowIndex][cellIndex + col] = addSpanIndex ?
wo.output_callbackJSON($this, txt, cellIndex + col) || txt + '(' + (cellIndex + col) + ')' : isHeader ? txt : dupe ? txt : '';
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}
}
}
// don't include hidden columns
if ( $this.css('display') !== 'none' ) {
// skip column if already defined
while (typeof tmpRow[rowIndex][cellIndex] !== 'undefined') { cellIndex++; }
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tmpRow[rowIndex][cellIndex] = tmpRow[rowIndex][cellIndex] ||
output.formatData( wo, $this.attr(wo.output_dataAttrib) || $this.html(), isHeader );
cellIndex++;
}
});
});
return tmpRow;
},
ignoreColumns : function(wo, data) {
// ignore columns -> remove data from built array (because we've already processed any rowspan/colspan)
$.each( data, function(indx, val){
data[indx] = $.grep(val, function(v, cellIndx){
return $.inArray(cellIndx, wo.output_ignoreColumns) < 0;
});
});
return data;
},
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process : function(c, wo) {
var mydata, $this, $rows, headers, csvData, len,
hasStringify = window.JSON && JSON.hasOwnProperty('stringify'),
indx = 0,
tmpData = (wo.output_separator || ',').toLowerCase(),
outputJSON = tmpData === 'json',
outputArray = tmpData === 'array',
separator = outputJSON || outputArray ? ',' : wo.output_separator,
$el = c.$table;
// regex to look for the set separator or HTML
wo.output_regex = new RegExp('(' + (/\\/.test(separator) ? '\\' : '' ) + separator + ')' );
// get header cells
$this = $el.find('thead tr:visible').not('.' + (ts.css.filterRow || 'tablesorter-filter-row') );
headers = output.processRow(c, $this, true, outputJSON);
// all tbody rows
$rows = $el.children('tbody').children('tr');
// get (f)iltered, (v)isible or all rows (look for the first letter only)
$rows = /f/.test(wo.output_saveRows) ? $rows.not('.' + (wo.filter_filteredRow || 'filtered') ) :
/v/.test(wo.output_saveRows) ? $rows.filter(':visible') : $rows;
// process to array of arrays
csvData = output.processRow(c, $rows);
len = headers.length;
if (wo.output_ignoreColumns.length) {
headers = output.ignoreColumns(wo, headers);
csvData = output.ignoreColumns(wo, csvData);
}
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if (outputJSON) {
tmpData = [];
$.each( csvData, function(indx, val){
// multiple header rows & output_headerRows = true, pick the last row...
tmpData.push( output.row2Hash( headers[ (len > 1 && wo.output_headerRows) ? indx % len : len - 1], val ) );
});
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// requires JSON stringify; if it doesn't exist, the output will show [object Object],... in the output window
mydata = hasStringify ? JSON.stringify(tmpData) : tmpData;
} else {
tmpData = output.row2CSV(wo, wo.output_headerRows ? headers : [ headers[ (len > 1 && wo.output_headerRows) ? indx % len : len - 1] ], outputArray)
.concat( output.row2CSV(wo, csvData, outputArray) );
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// stringify the array; if stringify doesn't exist the array will be flattened
mydata = outputArray && hasStringify ? JSON.stringify(tmpData) : tmpData.join('\n');
}
// callback; if true returned, continue processing
if ($.isFunction(wo.output_callback) && !wo.output_callback(c, mydata)) { return; }
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if ( /p/.test( (wo.output_delivery || '').toLowerCase() ) ) {
output.popup(mydata, wo.output_popupStyle, outputJSON || outputArray);
} else {
output.download(wo, mydata);
}
}, // end process
row2CSV : function(wo, tmpRow, outputArray) {
var tmp, rowIndex,
csvData = [],
rowLen = tmpRow.length;
for (rowIndex = 0; rowIndex < rowLen; rowIndex++) {
// remove any blank rows
tmp = tmpRow[rowIndex].join('').replace(/\"/g,'');
if (tmpRow[rowIndex].length > 0 && tmp !== '') {
csvData[csvData.length] = outputArray ? tmpRow[rowIndex] : tmpRow[rowIndex].join(wo.output_separator);
}
}
return csvData;
},
row2Hash : function(keys, values) {
var json = {};
$.each(values, function(indx, val) {
if ( indx < keys.length ) {
json[ keys[indx] ] = val;
}
});
return json;
},
formatData : function(wo, input, isHeader) {
var txt,
quotes = (wo.output_separator || ',').toLowerCase(),
separator = quotes === 'json' || quotes === 'array',
// replace " with “ if undefined
result = input.replace(/\"/g, wo.output_replaceQuote || '\u201c');
// replace line breaks with \\n & tabs with \\t
result = result.replace(output.regexBR, output.replaceCR).replace(/\t/g, output.replaceTab);
// extract img alt text
txt = result.match(output.regexIMG);
if (!wo.output_includeHTML && txt !== null) {
result = txt[1];
}
// replace/remove html
result = wo.output_includeHTML && !isHeader ? result : result.replace(output.regexHTML, '');
result = wo.output_trimSpaces || isHeader ? $.trim(result) : result;
// JSON & array outputs don't need quotes
quotes = separator ? false : wo.output_wrapQuotes || wo.output_regex.test(result) || output.regexQuote.test(result);
return quotes ? '"' + result + '"' : result;
},
popup : function(data, style, wrap) {
var generator = window.open('', output.popupTitle, style);
generator.document.write(
'<html><head><title>' + output.popupTitle + '</title></head><body>' +
'<textarea wrap="' + (wrap ? 'on' : 'off') + '" style="' + output.popupStyle + '">' + data + '\n</textarea>' +
'</body></html>'
);
generator.document.close();
generator.focus();
// select all text and focus within the textarea in the popup
// $(generator.document).find('textarea').select().focus();
return true;
},
// modified from https://github.com/PixelsCommander/Download-File-JS
// & http://html5-demos.appspot.com/static/a.download.html
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download : function (wo, data){
var e, blob, gotBlob,
nav = window.navigator,
link = document.createElement('a');
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// iOS devices do not support downloading. We have to inform user about this.
if (/(iP)/g.test(nav.userAgent)) {
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alert(output.message);
return false;
}
// test for blob support
try {
gotBlob = !!new Blob();
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} catch (err) {
gotBlob = false;
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}
// Use HTML5 Blob if browser supports it
if ( gotBlob ) {
window.URL = window.webkitURL || window.URL;
blob = new Blob([data], {type: wo.output_encoding});
if (nav.msSaveBlob) {
// IE 10+
nav.msSaveBlob(blob, wo.output_saveFileName);
} else {
// all other browsers
link.href = window.URL.createObjectURL(blob);
link.download = wo.output_saveFileName;
// Dispatching click event; using $(link).trigger() won't work
if (document.createEvent) {
e = document.createEvent('MouseEvents');
// event.initMouseEvent(type, canBubble, cancelable, view, detail, screenX, screenY, clientX, clientY, ctrlKey, altKey, shiftKey, metaKey, button, relatedTarget);
e.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
link.dispatchEvent(e);
}
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}
return false;
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}
// fallback to force file download (whether supported by server).
// not sure if this actually works in IE9 and older...
window.open( wo.output_encoding + encodeURIComponent(data) + '?download' , '_self');
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return true;
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},
remove : function(c) {
c.$table.off(output.event);
}
};
ts.addWidget({
id: "output",
options: {
output_separator : ',', // set to "json", "array" or any separator
output_ignoreColumns : [], // columns to ignore [0, 1,... ] (zero-based index)
output_dataAttrib : 'data-name', // header attrib containing modified header name
output_headerRows : false, // if true, include multiple header rows (JSON only)
output_delivery : 'popup', // popup, download
output_saveRows : 'filtered', // all, visible or filtered
output_duplicateSpans: true, // duplicate output data in tbody colspan/rowspan
output_replaceQuote : '\u201c;', // left double quote
output_includeHTML : false,
output_trimSpaces : true,
output_wrapQuotes : false,
output_popupStyle : 'width=500,height=300',
output_saveFileName : 'mytable.csv',
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// callback executed when processing completes
// return true to continue download/output
// return false to stop delivery & do something else with the data
output_callback : function(config, data){ return true; },
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// JSON callback executed when a colspan is encountered in the header
output_callbackJSON : function($cell, txt, cellIndex) { return txt + '(' + (cellIndex) + ')'; },
// the need to modify this for Excel no longer exists
output_encoding : 'data:application/octet-stream;charset=utf8,'
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},
init: function(table, thisWidget, c) {
output.init(c);
},
remove: function(table, c){
output.remove(c);
}
});
})(jQuery);