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LibGUI: Remember modified state on undo/redo actions

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This commit is contained in:
Carlos César Neves Enumo 2021-05-05 14:09:43 -03:00 • committed by Andreas Kling
parent 67537bfc80
commit 928f16d360
5 changed files with 39 additions and 12 deletions
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26
Userland/Libraries/LibGUI/UndoStack.cpp
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@ -61,6 +61,14 @@ void UndoStack::push(NonnullOwnPtr<Command>&& command)
if (m_stack_index > 0) {
for (size_t i = 0; i < m_stack_index; i++)
m_stack.remove(0);
if (m_clean_index.has_value()) {
if (m_clean_index.value() < m_stack_index)
m_clean_index.clear();
else
m_clean_index = m_clean_index.value() - m_stack_index;
}
m_stack_index = 0;
finalize_current_combo();
}
@ -78,12 +86,30 @@ void UndoStack::finalize_current_combo()
auto undo_commands_container = make<UndoCommandsContainer>();
m_stack.prepend(move(undo_commands_container));
if (m_clean_index.has_value())
m_clean_index = m_clean_index.value() + 1;
}
void UndoStack::set_current_unmodified()
{
// Skip empty container
if (can_undo() && m_stack[m_stack_index].m_undo_vector.is_empty())
m_clean_index = m_stack_index + 1;
else
m_clean_index = m_stack_index;
}
bool UndoStack::is_current_modified() const
{
return !m_clean_index.has_value() || m_stack_index != m_clean_index.value();
}
void UndoStack::clear()
{
m_stack.clear();
m_stack_index = 0;
m_clean_index.clear();
}
}