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path: root/src/plugins/Ui/skinned/listwidget.cpp
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Diffstat (limited to 'src/plugins/Ui/skinned/listwidget.cpp')
-rw-r--r--src/plugins/Ui/skinned/listwidget.cpp45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/plugins/Ui/skinned/listwidget.cpp b/src/plugins/Ui/skinned/listwidget.cpp
index b82ab6e14..2a469e12d 100644
--- a/src/plugins/Ui/skinned/listwidget.cpp
+++ b/src/plugins/Ui/skinned/listwidget.cpp
@@ -64,6 +64,8 @@ ListWidget::ListWidget(QWidget *parent)
m_pressed_index = INVALID_INDEX;
m_first = 0;
m_row_count = 0;
+ m_count = 0;
+ m_firstItem = 0;
m_select_on_release = false;
setAcceptDrops(true);
@@ -321,9 +323,19 @@ void ListWidget::updateList(int flags)
m_first = qMax(0, m_model->count() - m_row_count);
emit positionChanged(m_first, m_first);
}
+ else if((m_count > 0) && (m_count != m_model->count()) &&
+ m_firstItem && m_model->item(m_first) != m_firstItem)
+ {
+ restoreFirstVisible();
+ emit positionChanged(m_first, m_model->count() - m_row_count);
+ }
else
+ {
emit positionChanged(m_first, m_model->count() - m_row_count);
+ }
+ m_firstItem = m_model->isEmpty() ? 0 : m_model->item(m_first);
+ m_count = m_model->count();
items = m_model->mid(m_first, m_row_count);
while(m_rows.count() < qMin(m_row_count, items.count()))
@@ -446,6 +458,8 @@ void ListWidget::setModel(PlayListModel *selected, PlayListModel *previous)
}
qApp->processEvents();
m_model = selected;
+ m_count = m_model->count();
+ m_firstItem = 0;
if(m_model->property("first_visible").isValid())
{
@@ -564,6 +578,37 @@ bool ListWidget::updateRowCount()
return false;
}
+void ListWidget::restoreFirstVisible()
+{
+ if(m_first >= m_model->count() || m_firstItem == m_model->item(m_first))
+ return;
+
+ int delta = m_model->count() - m_count;
+
+ if(delta > 0)
+ {
+ for(int i = m_first + 1; i <= qMin(m_model->count() - 1, m_first + delta); ++i)
+ {
+ if(m_model->item(i) == m_firstItem)
+ {
+ m_first = i;
+ break;
+ }
+ }
+ }
+ else
+ {
+ for(int i = m_first - 1; i >= qMax(0, m_first + delta); --i)
+ {
+ if(m_model->item(i) == m_firstItem)
+ {
+ m_first = i;
+ break;
+ }
+ }
+ }
+}
+
void ListWidget::mouseMoveEvent(QMouseEvent *e)
{
if(e->buttons() == Qt::LeftButton)