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LibGUI: Use UndoStack::on_state_change inside TextDocument/TextEditor

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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.
This commit is contained in:
Andreas Kling 2021-05-08 13:16:37 +02:00
parent 0cb6103928
commit ee19f7c0aa
5 changed files with 17 additions and 2 deletions
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Userland/Libraries/LibGUI/TextDocument.h
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@ -47,6 +47,7 @@ public:
virtual void document_did_change() = 0;
virtual void document_did_set_text() = 0;
virtual void document_did_set_cursor(const TextPosition&) = 0;
virtual void document_did_update_undo_stack() = 0;
virtual bool is_automatic_indentation_enabled() const = 0;
virtual int soft_tab_width() const = 0;