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Fixup c30b0aac: protect against bad recursion

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Adding this particular line created bad redraw interactions. See
thread on lyx-devel here:
https://marc.info/?l=lyx-devel&m=165648365808777&w=2

The code is reorganized a bit:

- the part of updateGUI() that (en|dis)abled elements is not moved to
  updateBottons ; the rest is renamed updateWorkAreas()

- only updateButtons is called now in eventFilter

- finally the recursion curse is fixed now in updateWorkAreas() by
  setting the old_buffer value _before_ calling copy_params. This
  avoid recursion if some bad update were to happen again.
This commit is contained in:
Jean-Marc Lasgouttes 2022-06-30 14:13:57 +02:00
parent 8c8f558c4d
commit 2104ae8068
2 changed files with 20 additions and 19 deletions
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37
src/frontends/qt/FindAndReplace.cpp
View File

@ -86,7 +86,7 @@ void FindAndReplaceWidget::dockLocationChanged(Qt::DockWidgetArea area)
bool FindAndReplaceWidget::eventFilter(QObject * obj, QEvent * event)
{
updateGUI();
updateButtons();
if (event->type() != QEvent::KeyPress
|| (obj != find_work_area_ && obj != replace_work_area_))
return QWidget::eventFilter(obj, event);
@ -644,13 +644,6 @@ bool FindAndReplaceWidget::initialiseParams(std::string const & /*params*/)
}
void FindAndReplace::updateView()
{
widget_->updateGUI();
widget_->updateButtons();
}
FindAndReplace::FindAndReplace(GuiView & parent,
Qt::DockWidgetArea area,
Qt::WindowFlags flags)
@ -683,25 +676,17 @@ bool FindAndReplace::initialiseParams(std::string const & params)
}
void FindAndReplaceWidget::updateGUI()
void FindAndReplaceWidget::updateWorkAreas()
{
BufferView * bv = view_.documentBufferView();
if (bv) {
if (old_buffer_ != &bv->buffer()) {
old_buffer_ = &bv->buffer();
copy_params(*bv, find_work_area_->bufferView());
copy_params(*bv, replace_work_area_->bufferView());
old_buffer_ = &bv->buffer();
}
} else
old_buffer_ = nullptr;
bool const find_enabled = !find_work_area_->bufferView().buffer().empty();
findNextPB->setEnabled(find_enabled);
bool const replace_enabled = find_enabled && bv && !bv->buffer().isReadonly();
replaceLabel->setEnabled(replace_enabled);
replace_work_area_->setEnabled(replace_enabled);
replacePB->setEnabled(replace_enabled);
replaceallPB->setEnabled(replace_enabled);
}
@ -718,6 +703,22 @@ void FindAndReplaceWidget::updateButtons()
replacePB->setText(qt_("Rep&lace >"));
replacePB->setToolTip(qt_("Replace and find next occurrence (Enter, backwards: Shift+Enter)"));
}
BufferView * bv = view_.documentBufferView();
bool const find_enabled = !find_work_area_->bufferView().buffer().empty();
findNextPB->setEnabled(find_enabled);
bool const replace_enabled = find_enabled && bv && !bv->buffer().isReadonly();
replaceLabel->setEnabled(replace_enabled);
replace_work_area_->setEnabled(replace_enabled);
replacePB->setEnabled(replace_enabled);
replaceallPB->setEnabled(replace_enabled);
}
void FindAndReplace::updateView()
{
widget_->updateWorkAreas();
widget_->updateButtons();
}

2
src/frontends/qt/FindAndReplace.h
View File

@ -33,7 +33,7 @@ class FindAndReplaceWidget : public QTabWidget, public Ui::FindAndReplaceUi
public:
FindAndReplaceWidget(GuiView & view);
bool initialiseParams(std::string const & params);
void updateGUI();
void updateWorkAreas();
void updateButtons();
// return true if \c wa is one if the adv. F&R workareas