141 lines
2.4 KiB
C++
141 lines
2.4 KiB
C++
#include <NtxCmdList.h>
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namespace ntx
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{
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NtxCmdList::NtxCmdList()
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: m_executedCount(0)
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{
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setDescription("Multi Command");
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}
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NtxCmdList::NtxCmdList(const NtxString& description)
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: m_executedCount(0)
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{
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setDescription(description);
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}
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bool NtxCmdList::execute()
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{
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m_executedCount = 0;
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for (size_t i = 0; i < m_commands.size(); ++i)
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{
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if (!m_commands[i]->canExecute())
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{
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rollback(i);
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return false;
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}
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if (!m_commands[i]->execute())
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{
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rollback(i);
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return false;
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}
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m_executedCount++;
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}
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return true;
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}
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bool NtxCmdList::undo()
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{
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if (m_executedCount == 0)
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return false;
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for (size_t i = m_executedCount; i > 0; --i)
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{
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size_t index = i - 1;
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if (!m_commands[index]->canUndo())
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continue;
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m_commands[index]->undo();
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}
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m_executedCount = 0;
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return true;
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}
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bool NtxCmdList::canExecute() const
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{
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if (m_commands.empty())
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return false;
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for (const auto& cmd : m_commands)
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{
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if (!cmd->canExecute())
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return false;
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}
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return true;
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}
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bool NtxCmdList::canUndo() const
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{
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if (m_executedCount == 0)
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return false;
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for (size_t i = 0; i < m_executedCount; ++i)
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{
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if (m_commands[i]->canUndo())
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return true;
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}
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return false;
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}
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NtxString NtxCmdList::getDescription() const
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{
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NtxString desc = NtxICommand::getDescription();
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if (!desc.empty())
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return desc;
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if (m_commands.empty())
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return "Empty Multi Command";
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return "Multi Command (" + std::to_string(m_commands.size()) + " commands)";
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}
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void NtxCmdList::addCommand(NtxCommandUPtr command)
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{
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if (command)
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{
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m_commands.push_back(std::move(command));
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}
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}
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void NtxCmdList::clear()
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{
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m_commands.clear();
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m_executedCount = 0;
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}
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size_t NtxCmdList::count() const
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{
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return m_commands.size();
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}
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bool NtxCmdList::isEmpty() const
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{
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return m_commands.empty();
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}
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void NtxCmdList::rollback(size_t upToIndex)
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{
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for (size_t i = upToIndex; i > 0; --i)
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{
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size_t index = i - 1;
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if (m_commands[index]->canUndo())
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{
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m_commands[index]->undo();
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}
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}
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m_executedCount = 0;
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}
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} // namespace ntx
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