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LibGUI: Use UndoStack::on_state_change inside TextDocument/TextEditor
Have TextDocument listen for state changes on the internal undo stack, and forward those to all clients via a new virtual function. This simplifies updating the can_undo / can_redo states of TextEditor.
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5 changed files with 17 additions and 2 deletions
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@ -223,6 +223,7 @@ private:
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virtual void document_did_change() override;
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virtual void document_did_set_text() override;
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virtual void document_did_set_cursor(const TextPosition&) override;
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virtual void document_did_update_undo_stack() override;
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// ^Syntax::HighlighterClient
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virtual Vector<TextDocumentSpan>& spans() final { return document().spans(); }
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