Hierarchy grid headers now themed like Tree grid when exported to excel (#14485)

* refactor(grid): update hierarchical grid headers to use theme colors instead of hardcoded ones (#14222)
---------

Co-authored-by: INFRAGISTICS\IPetrov <[email protected]>
Co-authored-by: Galina Edinakova <[email protected]>

Author: ivanvpetrov

projects/igniteui-angular/src/lib/services/excel/excel-strings.ts

@@ -22,7 +22,7 @@ export class ExcelStrings {
 
     public static getStyles(): string {
         return ExcelStrings.XML_STRING +
-        '<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac x16r2" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:x16r2="http://schemas.microsoft.com/office/spreadsheetml/2015/02/main"><numFmts count="5"><numFmt numFmtId="164" formatCode="&quot;$&quot;#,##0.00"/><numFmt numFmtId="165" formatCode="[$£-809]#,##0.00"/><numFmt numFmtId="166" formatCode="[$¥-804]#,##0.00"/><numFmt numFmtId="167" formatCode="#,##0.00\ [$€-1]"/><numFmt numFmtId="168" formatCode="[$¥-411]#,##0.00"/></numFmts><fonts count="2" x14ac:knownFonts="1"><font><sz val="11"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font><font><sz val="11"/><color rgb="FFB7B7B7"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts><fills count="3"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill><fill><patternFill patternType="solid"><fgColor rgb="FF0D1822"/><bgColor indexed="64"/></patternFill></fill></fills><borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs><cellXfs count="13"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="14" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyAlignment="1"><alignment horizontal="center" vertical="center"/></xf><xf numFmtId="164" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="21" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="22" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="10" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles><dxfs count="0"/><tableStyles count="0" defaultTableStyle="TableStyleMedium2" defaultPivotStyle="PivotStyleLight16"/><extLst><ext uri="{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main"><x14:slicerStyles defaultSlicerStyle="SlicerStyleLight1"/></ext><ext uri="{9260A510-F301-46a8-8635-F512D64BE5F5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:timelineStyles defaultTimelineStyle="TimeSlicerStyleLight1"/></ext></extLst></styleSheet>';
+        '<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac x16r2" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:x16r2="http://schemas.microsoft.com/office/spreadsheetml/2015/02/main"><numFmts count="5"><numFmt numFmtId="164" formatCode="&quot;$&quot;#,##0.00"/><numFmt numFmtId="165" formatCode="[$£-809]#,##0.00"/><numFmt numFmtId="166" formatCode="[$¥-804]#,##0.00"/><numFmt numFmtId="167" formatCode="#,##0.00\ [$€-1]"/><numFmt numFmtId="168" formatCode="[$¥-411]#,##0.00"/></numFmts><fonts count="2" x14ac:knownFonts="1"><font><sz val="11"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font><font><b/><sz val="11"/><color theme="0"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts><fills count="3"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill><fill><patternFill patternType="solid"><fgColor theme="4"/><bgColor indexed="64"/></patternFill></fill></fills><borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs><cellXfs count="13"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="14" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyAlignment="1"><alignment horizontal="center" vertical="center"/></xf><xf numFmtId="164" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="21" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="22" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="10" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles><dxfs count="0"/><tableStyles count="0" defaultTableStyle="TableStyleMedium2" defaultPivotStyle="PivotStyleLight16"/><extLst><ext uri="{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main"><x14:slicerStyles defaultSlicerStyle="SlicerStyleLight1"/></ext><ext uri="{9260A510-F301-46a8-8635-F512D64BE5F5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:timelineStyles defaultTimelineStyle="TimeSlicerStyleLight1"/></ext></extLst></styleSheet>';
     }
 
     public static getWorkbook(worksheetName: string): string {

projects/igniteui-angular/src/lib/services/excel/zip-helper.spec.ts

@@ -126,7 +126,7 @@ export class ZipFiles {
     }
 
     public static getStylesheetXML(): string {
-        return `<?xml version="1.0" encoding="UTF-8"?><styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac x16r2" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:x16r2="http://schemas.microsoft.com/office/spreadsheetml/2015/02/main"><numFmts count="5"><numFmt numFmtId="164" formatCode="&quot;$&quot;#,##0.00"/><numFmt numFmtId="165" formatCode="[$£-809]#,##0.00"/><numFmt numFmtId="166" formatCode="[$¥-804]#,##0.00"/><numFmt numFmtId="167" formatCode="#,##0.00\ [$€-1]"/><numFmt numFmtId="168" formatCode="[$¥-411]#,##0.00"/></numFmts><fonts count="2" x14ac:knownFonts="1"><font><sz val="11"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font><font><sz val="11"/><color rgb="FFB7B7B7"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts><fills count="3"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill><fill><patternFill patternType="solid"><fgColor rgb="FF0D1822"/><bgColor indexed="64"/></patternFill></fill></fills><borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs><cellXfs count="13"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="14" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyAlignment="1"><alignment horizontal="center" vertical="center"/></xf><xf numFmtId="164" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="21" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="22" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="10" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles><dxfs count="0"/><tableStyles count="0" defaultTableStyle="TableStyleMedium2" defaultPivotStyle="PivotStyleLight16"/><extLst><ext uri="{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main"><x14:slicerStyles defaultSlicerStyle="SlicerStyleLight1"/></ext><ext uri="{9260A510-F301-46a8-8635-F512D64BE5F5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:timelineStyles defaultTimelineStyle="TimeSlicerStyleLight1"/></ext></extLst></styleSheet>`;
+        return `<?xml version="1.0" encoding="UTF-8"?><styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac x16r2" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:x16r2="http://schemas.microsoft.com/office/spreadsheetml/2015/02/main"><numFmts count="5"><numFmt numFmtId="164" formatCode="&quot;$&quot;#,##0.00"/><numFmt numFmtId="165" formatCode="[$£-809]#,##0.00"/><numFmt numFmtId="166" formatCode="[$¥-804]#,##0.00"/><numFmt numFmtId="167" formatCode="#,##0.00\ [$€-1]"/><numFmt numFmtId="168" formatCode="[$¥-411]#,##0.00"/></numFmts><fonts count="2" x14ac:knownFonts="1"><font><sz val="11"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font><font><b/><sz val="11"/><color theme="0"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts><fills count="3"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill><fill><patternFill patternType="solid"><fgColor theme="4"/><bgColor indexed="64"/></patternFill></fill></fills><borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs><cellXfs count="13"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="14" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="0" fontId="1" fillId="2" borderId="0" xfId="0"/><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0" applyAlignment="1"><alignment horizontal="center" vertical="center"/></xf><xf numFmtId="164" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="165" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="166" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="167" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="168" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="21" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="22" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/><xf numFmtId="10" fontId="0" fillId="0" borderId="0" xfId="0" applyNumberFormat="1"/></cellXfs><cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles><dxfs count="0"/><tableStyles count="0" defaultTableStyle="TableStyleMedium2" defaultPivotStyle="PivotStyleLight16"/><extLst><ext uri="{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main"><x14:slicerStyles defaultSlicerStyle="SlicerStyleLight1"/></ext><ext uri="{9260A510-F301-46a8-8635-F512D64BE5F5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:timelineStyles defaultTimelineStyle="TimeSlicerStyleLight1"/></ext></extLst></styleSheet>`;
     }
 
     public static getSharedStringsXML(stringsData: string) {