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GuiLyXFiles: Hide empty categories on filtering (#12584)
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5ee0ba6403
commit
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@ -26,6 +26,7 @@
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#include "support/qstring_helpers.h"
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#include "support/Package.h"
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#include <QVector>
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#include <QDirIterator>
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#include <QTreeWidget>
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@ -509,12 +510,43 @@ void GuiLyXFiles::filterLabels()
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{
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Qt::CaseSensitivity cs = csFindCB->isChecked() ?
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Qt::CaseSensitive : Qt::CaseInsensitive;
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// Collect "active" categories (containing entries
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// that match the filter)
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QVector<QTreeWidgetItem*> activeCats;
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QTreeWidgetItemIterator it(filesLW);
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while (*it) {
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(*it)->setHidden(
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(*it)->childCount() == 0
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&& !(*it)->text(0).contains(filter_->text(), cs)
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);
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if ((*it)->childCount() > 0) {
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// Unhide parents (will be hidden
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// below if necessary)
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(*it)->setHidden(false);
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++it;
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continue;
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}
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bool const match = (*it)->text(0).contains(filter_->text(), cs);
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if (match) {
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// Register parents of matched entries
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// so we don't hide those later.
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QTreeWidgetItem * twi = *it;
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while (true) {
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if (!twi->parent())
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break;
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activeCats << twi->parent();
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// ascend further up if possible
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twi = twi->parent();
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}
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}
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(*it)->setHidden(!match);
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++it;
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}
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// Iterate through parents once more
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// to hide empty categories
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it = QTreeWidgetItemIterator(filesLW);
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while (*it) {
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if ((*it)->childCount() == 0) {
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++it;
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continue;
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}
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(*it)->setHidden(!activeCats.contains(*it));
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++it;
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}
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}
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