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JavaScript

9 months ago
/**
* allows for downloading of grid data (store) directly into excel
* Method: extracts data of gridPanel store, uses columnModel to construct XML excel document,
* converts to Base64, then loads everything into a data URL link.
*
* @author Animal <extjs support team>
*
*/
/**
* base64 encode / decode
*
* @location http://www.webtoolkit.info/
*
*/
var Base64 = (function () {
// Private property
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
// Private method for UTF-8 encoding
function utf8Encode(string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
}
else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
}
else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
}
// Public method for encoding
return {
encode: (typeof btoa == 'function') ? function (input) {
return btoa(utf8Encode(input));
} : function (input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = utf8Encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output +
keyStr.charAt(enc1) + keyStr.charAt(enc2) +
keyStr.charAt(enc3) + keyStr.charAt(enc4);
}
return output;
}
};
})();
Ext.override(Ext.grid.GridPanel, {
getExcelXml: function (includeHidden) {
var worksheet = this.createWorksheet(includeHidden);
//var totalWidth = this.getColumnModel().getTotalWidth(includeHidden);
return '<xml version="1.0" encoding="utf-8">' +
'<ss:Workbook xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:o="urn:schemas-microsoft-com:office:office">' +
'<o:DocumentProperties><o:Title>' + this.title + '</o:Title></o:DocumentProperties>' +
'<ss:ExcelWorkbook>' +
'<ss:WindowHeight>' + worksheet.height + '</ss:WindowHeight>' +
'<ss:WindowWidth>' + worksheet.width + '</ss:WindowWidth>' +
'<ss:ProtectStructure>False</ss:ProtectStructure>' +
'<ss:ProtectWindows>False</ss:ProtectWindows>' +
'</ss:ExcelWorkbook>' +
'<ss:Styles>' +
'<ss:Style ss:ID="Default">' +
'<ss:Alignment ss:Vertical="Top" ss:WrapText="1" />' +
'<ss:Font ss:FontName="arial" ss:Size="10" />' +
'<ss:Borders>' +
'<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Top" />' +
'<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Bottom" />' +
'<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Left" />' +
'<ss:Border ss:Color="#e4e4e4" ss:Weight="1" ss:LineStyle="Continuous" ss:Position="Right" />' +
'</ss:Borders>' +
'<ss:Interior />' +
'<ss:NumberFormat />' +
'<ss:Protection />' +
'</ss:Style>' +
'<ss:Style ss:ID="title">' +
'<ss:Borders />' +
'<ss:Font />' +
'<ss:Alignment ss:WrapText="1" ss:Vertical="Center" ss:Horizontal="Center" />' +
'<ss:NumberFormat ss:Format="@" />' +
'</ss:Style>' +
'<ss:Style ss:ID="headercell">' +
'<ss:Font ss:Bold="1" ss:Size="10" />' +
'<ss:Alignment ss:WrapText="1" ss:Horizontal="Center" />' +
'<ss:Interior ss:Pattern="Solid" ss:Color="#A3C9F1" />' +
'</ss:Style>' +
'<ss:Style ss:ID="even">' +
'<ss:Interior ss:Pattern="Solid" ss:Color="#DDFFFF" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="even" ss:ID="evendate">' +
'<ss:NumberFormat ss:Format="yyyy-mm-dd" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="even" ss:ID="evenint">' +
'<ss:NumberFormat ss:Format="0" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="even" ss:ID="evenfloat">' +
'<ss:NumberFormat ss:Format="0.00" />' +
'</ss:Style>' +
'<ss:Style ss:ID="odd">' +
'<ss:Interior ss:Pattern="Solid" ss:Color="#EEEEFF" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="odd" ss:ID="odddate">' +
'<ss:NumberFormat ss:Format="yyyy-mm-dd" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="odd" ss:ID="oddint">' +
'<ss:NumberFormat ss:Format="0" />' +
'</ss:Style>' +
'<ss:Style ss:Parent="odd" ss:ID="oddfloat">' +
'<ss:NumberFormat ss:Format="0.00" />' +
'</ss:Style>' +
'</ss:Styles>' +
worksheet.xml +
'</ss:Workbook>';
},
createWorksheet: function (includeHidden) {
// Calculate cell data types and extra class names which affect formatting
var cellType = [];
var cellTypeClass = [];
var cm = this.columns;
var totalWidthInPixels = 0;
var colXml = '';
var headerXml = '';
var visibleColumnCountReduction = 0;
var colCount = cm.length;
var recordCount = this.store.getCount();
for (var i = 0; i < colCount; i++) {
var column = cm[i];
if ((column.dataIndex != '')
&& (includeHidden || !column.isHidden())) {
var w = column.getWidth();
totalWidthInPixels += w;
if (column.text === "") {
cellType.push("None");
cellTypeClass.push("");
++visibleColumnCountReduction;
}
else {
colXml += '<ss:Column ss:AutoFitWidth="1" ss:Width="' + w + '" />';
headerXml += '<ss:Cell ss:StyleID="headercell">' +
'<ss:Data ss:Type="String">' + column.text + '</ss:Data>' +
'<ss:NamedCell ss:Name="Print_Titles" /></ss:Cell>';
var fldtype = 'string';
if (recordCount > 0) {
var model = this.store.getAt(0);
var fields = model.fields;
var field = null;
for (key in fields.items) {
if (fields.items[key].name == column.dataIndex) {
field = fields.items[key];
break;
}
}
//var field = fields.items.indexOf(column.dataIndex);// fields.items[i];
if (field != null)
fldtype = field.type.type;
}
switch (fldtype) {
case "int":
cellType.push("Number");
cellTypeClass.push("int");
break;
case "float":
cellType.push("Number");
cellTypeClass.push("float");
break;
case "bool":
case "boolean":
cellType.push("String");
cellTypeClass.push("");
break;
case "date":
cellType.push("DateTime");
cellTypeClass.push("date");
break;
default:
cellType.push("String");
cellTypeClass.push("");
break;
}
}
}
}
var visibleColumnCount = cellType.length - visibleColumnCountReduction;
var result = {
height: 9000,
width: Math.floor(totalWidthInPixels * 30) + 50
};
// Generate worksheet header details.
var t = '<ss:Worksheet ss:Name="' + this.title + '">' +
'<ss:Names>' +
'<ss:NamedRange ss:Name="Print_Titles" ss:RefersTo="=\'' + this.title + '\'!R1:R2" />' +
'</ss:Names>' +
'<ss:Table x:FullRows="1" x:FullColumns="1"' +
' ss:ExpandedColumnCount="' + (visibleColumnCount + 2) +
'" ss:ExpandedRowCount="' + (this.store.getCount() + 2) + '">' +
colXml +
// '<ss:Row ss:Height="38">' +
// '<ss:Cell ss:StyleID="title" ss:MergeAcross="' + (visibleColumnCount - 1) + '">' +
// '<ss:Data xmlns:html="http://www.w3.org/TR/REC-html40" ss:Type="String">' +
// '<html:B>Generated by ExtJS</html:B></ss:Data><ss:NamedCell ss:Name="Print_Titles" />' +
// '</ss:Cell>' +
// '</ss:Row>' +
'<ss:Row ss:AutoFitHeight="1">' +
headerXml +
'</ss:Row>';
// Generate the data rows from the data in the Store
for (var i = 0, it = this.store.data.items, l = it.length; i < l; i++) {
t += '<ss:Row>';
var cellClass = (i & 1) ? 'odd' : 'even';
r = it[i].data;
var k = 0;
for (var j = 0; j < colCount; j++) {
var datacolumn = cm[j];
if ((datacolumn.dataIndex != '')
&& (includeHidden || !datacolumn.isHidden())) {
var v = r[datacolumn.dataIndex];
if (cellType[k] !== "None") {
t += '<ss:Cell ss:StyleID="' + cellClass + cellTypeClass[k] + '"><ss:Data ss:Type="' + cellType[k] + '">';
if (cellType[k] == 'DateTime') {
if (v == null) {
t += "";
} else {
var _s = "";
_s = Ext.util.Format.date(v, "Y-m-d");
t += _s;
}
} else {
t += v;
}
t += '</ss:Data></ss:Cell>';
}
k++;
}
}
t += '</ss:Row>';
}
result.xml = t + '</ss:Table>' +
'<x:WorksheetOptions>' +
'<x:PageSetup>' +
'<x:Layout x:CenterHorizontal="1" x:Orientation="Landscape" />' +
'<x:Footer x:Data="Page &amp;P of &amp;N" x:Margin="0.5" />' +
'<x:PageMargins x:Top="0.5" x:Right="0.5" x:Left="0.5" x:Bottom="0.8" />' +
'</x:PageSetup>' +
'<x:FitToPage />' +
'<x:Print>' +
'<x:PrintErrors>Blank</x:PrintErrors>' +
'<x:FitWidth>1</x:FitWidth>' +
'<x:FitHeight>32767</x:FitHeight>' +
'<x:ValidPrinterInfo />' +
'<x:VerticalResolution>600</x:VerticalResolution>' +
'</x:Print>' +
'<x:Selected />' +
'<x:DoNotDisplayGridlines />' +
'<x:ProtectObjects>False</x:ProtectObjects>' +
'<x:ProtectScenarios>False</x:ProtectScenarios>' +
'</x:WorksheetOptions>' +
'</ss:Worksheet>';
return result;
}
});