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LibGUI+TextEditor: Make TextDocument modified state track undo stack
This was quite unreliable before. Changes to the undo stack's modified state are now reflected in the document's modified state, and the GUI::TextEditor widget has its undo/redo actions updated automatically. UndoStack is still a bit hard to understand due to the lazy coalescing of commands, and that's something we should improve upon (e.g with more explicit, incremental command merging.) But for now, this is a nice improvement and undo/redo finally behaves in a way that feels natural.
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4 changed files with 23 additions and 4 deletions
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@ -134,6 +134,7 @@ public:
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virtual void redo() { document().redo(); }
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Function<void()> on_change;
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Function<void(bool modified)> on_modified_change;
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Function<void()> on_mousedown;
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Function<void()> on_return_pressed;
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Function<void()> on_escape_pressed;
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