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LibGUI: Add UndoStack::{undo,redo}_action_text()

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These return the action_text() for the current undo and redo commands,
if available.
This commit is contained in:
Andreas Kling 2021-05-08 21:18:51 +02:00
parent 0bfbee4596
commit c670d8c56d
2 changed files with 17 additions and 0 deletions
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14
Userland/Libraries/LibGUI/UndoStack.cpp
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@ -109,4 +109,18 @@ void UndoStack::clear()
on_state_change(); on_state_change();
} }
Optional<String> UndoStack::undo_action_text() const
{
if (!can_undo())
return {};
return m_stack[m_stack_index - 1].action_text();
}
Optional<String> UndoStack::redo_action_text() const
{
if (!can_redo())
return {};
return m_stack[m_stack_index].action_text();
}
} }

3
Userland/Libraries/LibGUI/UndoStack.h
View file

@ -30,6 +30,9 @@ public:
void clear(); void clear();
Optional<String> undo_action_text() const;
Optional<String> redo_action_text() const;
Function<void()> on_state_change; Function<void()> on_state_change;
private: private: