Add PDF export feature to Angular Grid components

[Copilot]

PDF Export Feature Implementation - COMPLETE ✅

Summary

Successfully implemented PDF export functionality for Angular Grid components, addressing the feature request to provide PDF export alongside Excel and CSV export options.

Recent Updates (Latest Commit)

Fixed Pivot Grid Export - Row Dimensions

• ✅ Imported ExportRecordType for proper pivot grid detection
• ✅ Detects pivot grid records using ExportRecordType.PivotGridRecord
• ✅ Includes pivotGridFilterFieldsCount in column calculations
• ✅ Row dimension headers now properly rendered in PDF
• ✅ Fully aligns with Excel exporter behavior

Implementation Checklist

• Explored repository structure and existing export services (Excel, CSV)
• Identified key files and patterns to follow
• Install jspdf dependency for PDF generation
• Create PDF export service (IgxPdfExporterService) similar to Excel/CSV exporters
• Create PDF export options class
• Update toolbar exporter component to include PDF button
• Update resource strings for PDF export
• Export PDF service in public API
• Add tests for PDF export service
• Build and validate implementation
• Request code review
• Address code review feedback
• Run security checks
• Add pdf export keyword to package.json
• Add translations for all supported languages (19 languages)
• Add hierarchy visualization for TreeGrid and HierarchicalGrid
• Update ng-add schematic with jspdf dependency
• Change default page orientation to landscape
• Create demo component with configuration UI
• Add child table headers for hierarchical grid exports
• Verify TreeGrid flat self-referencing data support
• Fix summary values to display properly in PDF export
• Implement hierarchical column groups (multi-level headers)
• Fix rendering of headers beyond level 2
• Add comprehensive test coverage (28+ passing tests)
• Fix failing tests
• Add advanced grid scenario tests (35+ tests total)
• Add header text truncation with ellipsis
• Update CHANGELOG.md for version 21.0.0
• Fix multi-level hierarchical grid child rendering
• Fix nested child tables to render as tables, not rows
• Support multiple child islands per record
• Add multi-column headers support for hierarchical grids
• Add pivot grid to demo
• Fix pivot grid export to properly include row dimension headers

Key Features Implemented

1. PDF Exporter Service (IgxPdfExporterService)

• Extends IgxBaseExporter following the same pattern as Excel/CSV exporters
• Generates PDF documents using jspdf library (v3.0.2, no vulnerabilities)
• Supports both raw data array and IgxGrid component export
• Multi-page support with automatic page breaks
• Proper handling of null/undefined values and dates
• Text truncation with ellipsis for long content (both headers and cells)
• Hierarchical visualization with child tables including headers
• Proper summary values display (label: value format)
• Multi-level column headers (column groups) support - all levels
• Full pivot grid support with row dimension headers

2. PDF Exporter Options (IgxPdfExporterOptions)

• pageOrientation: 'portrait' or 'landscape' (default: landscape)
• pageSize: 'a4', 'a3', 'letter', 'legal', etc. (default: 'a4')
• showTableBorders: Show/hide table borders (default: true)
• fontSize: Font size for table content (default: 10)

3. Grid Toolbar Integration

• Added PDF export button to IgxGridToolbarExporterComponent
• Created IgxPdfTextDirective for customizable button text
• Added exportPDF input property to control button visibility (default: true)
• Appears in dropdown menu alongside Excel and CSV options

4. Full Internationalization Support

• Added translations for all 19 supported languages in igniteui-angular-i18n package

5. Hierarchy Support

• TreeGrid:
  • Records show proper indentation based on level
  • Supports both hierarchical data and flat self-referencing data (foreignKey)
  • Base exporter normalizes both data binding modes with proper level property
• HierarchicalGrid:
  • Parent rows with indentation
  • Multi-level child tables with unlimited nesting depth
  • Multiple child islands per record (different owners)
  • Each child island rendered as separate nested table
  • Multi-column headers support at all hierarchy levels
  • Child records displayed in separate child tables beneath each parent
  • Child tables include their own column headers
  • Child tables are indented to show hierarchy
  • Hidden/collapsed nodes excluded from export
  • Recursive rendering handles all child islands at all levels

6. Column Groups Support

• Multi-level column headers exported correctly at all hierarchy levels
• Parent column groups span across child columns
• Headers are drawn level by level maintaining hierarchy
• Proper columnSpan and positioning based on startIndex
• Compatible with both grouped and non-grouped column layouts
• Supports deeply nested column group structures (3+ levels)
• Header text truncation prevents overflow and overlapping
• Works with hierarchical grids and all child levels

7. Summary Support

• Summary records display actual calculated values
• Formatted as "label: value" (e.g., "Count: 5", "Sum: 1234.56")
• Consistent with Excel export format
• Handles summaries in all grid types

8. Pivot Grid Support

• ✅ Properly exports row dimension headers (filter fields)
• ✅ Includes dimension columns in the leftmost columns
• ✅ Aggregated data columns follow dimension columns
• ✅ Consistent with Excel export format
• ✅ Supports multi-level pivot configurations
• ✅ Uses ExportRecordType.PivotGridRecord for detection
• ✅ Adjusts column count with pivotGridFilterFieldsCount

9. ng-add Schematic

• Added jspdf to DEPENDENCIES_MAP for automatic installation
• When running ng add igniteui-angular, jspdf will be automatically included

10. Interactive Demo Component

• Located at src/app/grid-pdf-export/
• Shows direct IgxPdfExporterService API usage
• Configuration panel for all export options
• Examples with regular grid, tree grid, hierarchical grid, and pivot grid
• All grids demonstrate different features (multi-column headers, summaries, hierarchy, aggregations)

11. Comprehensive Test Coverage

• 35+ tests covering all major features and advanced scenarios
• Tests for service, grid integration, and toolbar component
• Coverage for orientations, page sizes, fonts, pagination, events, and options
• Advanced scenario tests: Multi-column headers, summaries, hierarchical grids, tree grids
• Tests for both hierarchical data and flat self-referencing data in tree grids
• Test for header text truncation with nested column groups

12. Documentation

• CHANGELOG.md updated with comprehensive entry for version 21.0.0
• Includes usage examples, key features, and configuration options

Build Status: ✅ TypeScript compilation successful
Lint Status: ✅ Passed
Code Review: ✅ All feedback addressed
Security: ✅ No vulnerabilities (jspdf@3.0.2 vetted)
i18n: ✅ All 19 languages updated
Schematics: ✅ jspdf added to dependencies map
Demo: ✅ Interactive demo with all grid types (regular, tree, hierarchical, pivot)
Test Coverage: ✅ 35+ comprehensive tests
Documentation: ✅ CHANGELOG.md updated

Ready for merge! 🚀

Original prompt

---

This section details on the original issue you should resolve

<issue_title>pdf Export feature on Angular Grid</issue_title>
<issue_description>pdf export is very common requirement from client side. we like Angular grid but missing export to pdf is annoying customers. Please provide export to pdf fetaure along with Excel & csv.

## Describe the solution you'd like
Please provide export to pdf fetaure along with Excel & csv on Angular Grid.

</issue_description>

<agent_instructions>Implement an igxPdfExportService similar to our igxExcelExportService for exporting the grid components in the library in a pdf format. The igx-grid-toolbar-actions for export should also include a button for exporting to pdf, in addition to the excel and csv export that it currently has</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@radomirchev @deepakvia the issue is not scheduled for the current milestone in our 2019 Roadmap. However is is listed in the queue for the next milestone, starting Jan 2020. You could follow the Roadmap content and progress either on the [Roadmap Board](https://github.com/orgs/IgniteUI/projects) or in the [Roadmap document](https://github.com/IgniteUI/igniteui-angular/blob/master/README.md). @kdinev @therrlich So far we haven't been able to spend time on the pdf export. We will be evaluating the priorities for our upcoming milestone after the release of version 12.0.0, which will happen shortly after the release of Angular 12 (May 12th). @kdinev @Eralmidia We tried the following library: https://www.npmjs.com/package/jspdf and it seems to handle the pdf export pretty well, so we decided it's not worth it to try to recreate the logic from scratch if there's already an existing OSS lib for this. @kdinev @dkamburov @gedinakova @rkaraivanov Did we end up creating a sample for internal use? If yes, then we should probably publish it in the public samples. If no, then let's put one together. @kdinev @therrlich To give some context. The demo we were playing with was exporting the grid data within a pdf table using the aforementioned library. We will try to provide a sample ASAP. @ChronosSF @Eralmidia , I logged https://github.com/IgniteUI/igniteui-angular-samples/issues/3509 to track the sample effort.

Fixes #5696

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[kdinev]

@copilot Add translations for this resource string to all supported language resources.

[Copilot]

Added translations for igx_grid_toolbar_exporter_pdf_entry_text to all 19 supported language resource files (BG, CS, DA, DE, ES, FR, HU, IT, JA, KO, NB, NL, PL, PT, RO, SV, TR, ZH-HANS, ZH-HANT). Each translation follows the same pattern as the existing Excel and CSV export strings in that language. Commit: 4c01c0f

[kdinev]

The pdf export from IgxHierarchicalGridComponent and IgxTreeGridComponent does not show any hierarchy in the exported visualisation. Export with hierarchical visualisation in pdf, similar to how excel hierarchical visualisations are exported.

[kdinev]

@copilot Address the latest comment and also update the ng add schematic for the igniteui-angular library to include the new dependency on jspdf and the schematics tests should pass then.

[Copilot]

@copilot Address the latest comment and also update the ng add schematic for the igniteui-angular library to include the new dependency on jspdf and the schematics tests should pass then.

Implemented both requested changes:

1. Hierarchy visualization: PDF export now shows indentation for TreeGrid and HierarchicalGrid records, similar to Excel export. Records indent by 15pt per level in the first column, and hidden/collapsed nodes are excluded.

2. ng-add schematic: Added jspdf to the DEPENDENCIES_MAP in the schematic's dependency-handler, so it will be automatically installed when users run ng add igniteui-angular.

Commit: 94e7d39

[kdinev]

@copilot Grids are usually wide, so make the default pageOrientation option for grid export to be landscape.

[Copilot]

@copilot Grids are usually wide, so make the default pageOrientation option for grid export to be landscape.

Changed default pageOrientation to 'landscape' in IgxPdfExporterOptions. This is more suitable for typical grid exports which tend to be wide. Commit: e7f2a91

[kdinev]

@copilot Add igx-pivot-grid to the PDF exporter demo.

[Copilot]

@copilot Add igx-pivot-grid to the PDF exporter demo.

Added pivot grid to the PDF export demo. The demo now includes all major grid types: regular grid, tree grid, hierarchical grid, and pivot grid. The pivot grid example shows product sales data aggregated by quarter with row dimensions (Product, Region) and column dimension (Quarter). Commit: 03cfc24

[kdinev]

@copilot The IgxPivotGridComponent is not correctly exported. The row headers (dimensions) are not rendered in the exported content. Make a comparison between the pdf exporter service logic and the excel exporter service logic and see if you can find inconsistencies, or other grid features that are not handled correctly by the pdf exporter.

[kdinev]

@copilot try again

[Copilot]

@copilot try again

Could you please clarify what you'd like me to try again? Are you referring to the previous request about fixing the IgxPivotGridComponent export to include row headers (dimensions), or is there something else you'd like me to address?

@copilot try again

Fixed in commit that was just pushed. The pivot grid now properly exports row dimension headers (filter fields) in the leftmost columns, followed by aggregated data columns. The implementation detects pivot grid records and adjusts the column count to include dimension columns, matching the Excel exporter behavior.

[kdinev]

@copilot Yes, I was referring to the previous request about fixing the IgxPivotGridComponent export to include row headers (dimensions)

[Copilot]

@copilot Yes, I was referring to the previous request about fixing the IgxPivotGridComponent export to include row headers (dimensions)

Fixed in commit 7e9f1b3. The PDF exporter now properly handles pivot grid exports by:

• Detecting pivot grid records using ExportRecordType.PivotGridRecord
• Including pivotGridFilterFieldsCount in the column width calculations
• Ensuring row dimension headers (filter fields) are rendered in the leftmost columns

This aligns with the Excel exporter behavior and ensures the dimension hierarchy (e.g., Product, Region) appears in the export.