| 310 | } |
| 311 | |
| 312 | void QMappingSequenceEdit::updateUndoRedoButtonsEnabled() |
| 313 | { |
| 314 | if (!ui) { |
| 315 | return; |
| 316 | } |
| 317 | |
| 318 | const bool canUndo = (!m_HistorySnapshots.isEmpty() && m_HistoryIndex > 0); |
| 319 | const bool canRedo = (!m_HistorySnapshots.isEmpty() && m_HistoryIndex >= 0 && m_HistoryIndex < (m_HistorySnapshots.size() - 1)); |
| 320 | |
| 321 | if (ui->undoButton) { |
| 322 | ui->undoButton->setEnabled(canUndo); |
| 323 | } |
| 324 | if (ui->redoButton) { |
| 325 | ui->redoButton->setEnabled(canRedo); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | void QMappingSequenceEdit::ensureBaseSnapshotBeforeListChange() |
| 330 | { |