29 lines
1.3 KiB
C#
29 lines
1.3 KiB
C#
using System.Collections.Generic;
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namespace KillerPDF
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{
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// The undo stack's entry type. Each entry is either an annotation removal or a full document
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// snapshot; AnnotationGroup removes a specific set in one step (a text edit = cover + text).
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//
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// TOP-LEVEL, not nested in MainWindow. The code that pushes undo entries - Annotations.cs and
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// TextEditing.cs - lives in KillerPDF.Controls, where a type nested in MainWindow only spells
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// as MainWindow.UndoEntry; that would mean qualifying roughly 30 call sites for no gain. As
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// top-level types in KillerPDF they resolve unqualified from the child namespace too.
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//
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// This also retires the CS0052 chain that made them internal in the first place: DocumentSession
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// had to be internal for the render cache, its UndoStack field is Stack<UndoEntry>, and a field
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// cannot be more accessible than its type.
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internal enum UndoKind { Annotation, Document, StampBatch, ClearAnnotations, AnnotationGroup, PageSnapshot }
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internal readonly record struct UndoEntry(
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UndoKind Kind,
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int PageIdx = -1,
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byte[]? DocBytes = null,
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bool WasDirty = false,
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int[]? Pages = null,
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PageAnnotation? Annot = null,
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Dictionary<int, List<PageAnnotation>>? AnnotSnapshot = null,
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List<PageAnnotation>? AnnotGroup = null);
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}
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