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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\PagedMedia; |
| 6 | |
| 7 | /** |
| 8 | * CSS Paged Media 3 §3.1 — `@page` pseudo-class selectors. |
| 9 | * |
| 10 | * A `@page :first` rule applies to the first page of a named-page |
| 11 | * group. `@page :left` / `@page :right` alternate for two-sided |
| 12 | * print. `@page :blank` matches pages forced empty by a `break- |
| 13 | * before: page` directive. |
| 14 | * |
| 15 | * CSS Paged Media 3 §3.1.5 — `:nth(an+b)` for arbitrary page indices. |
| 16 | * |
| 17 | * Phase 4G.1 (extraction) maps the at-rule prelude text (`:first`, |
| 18 | * `:left`, `:nth(2n+1)`, …) into the enum cases. `:nth(an+b)` is |
| 19 | * the only one that takes parameters and is represented by a |
| 20 | * separate value type (`NthSelector`) rather than an enum case. |
| 21 | */ |
| 22 | enum PageSelector: string |
| 23 | { |
| 24 | case First = 'first'; |
| 25 | case Left = 'left'; |
| 26 | case Right = 'right'; |
| 27 | case Blank = 'blank'; |
| 28 | } |