drinkingtea/nostalgia
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[nostalgia/studio] Add redo and undo triggered signals to UndoStack

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This commit is contained in:
Gary Talent 2022-02-19 03:05:45 -06:00
parent 56ec063658
commit db2a225855
2 changed files with 8 additions and 2 deletions
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2
src/nostalgia/studio/lib/undostack.cpp
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@ -19,12 +19,14 @@ void UndoStack::redo() noexcept {
if (m_stackIdx < m_stack.size()) {
m_stack[m_stackIdx++]->redo();
}
redoTriggered.emit();
}
void UndoStack::undo() noexcept {
if (m_stackIdx) {
m_stack[--m_stackIdx]->undo();
}
undoTriggered.emit();
}
}

8
src/nostalgia/studio/lib/undostack.hpp
View File

@ -4,6 +4,7 @@
#pragma once
#include <ox/event/signal.hpp>
#include <ox/std/error.hpp>
#include <ox/std/memory.hpp>
#include <ox/std/vector.hpp>
@ -30,14 +31,17 @@ class UndoStack {
void undo() noexcept;
[[nodiscard]]
constexpr bool canRedo() noexcept {
constexpr bool canRedo() const noexcept {
return m_stackIdx < m_stack.size();
}
[[nodiscard]]
constexpr bool canUndo() noexcept {
constexpr bool canUndo() const noexcept {
return m_stackIdx;
}
ox::Signal<ox::Error()> redoTriggered;
ox::Signal<ox::Error()> undoTriggered;
};
}