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Delay applying a changed filter value

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When changing a filter value delay the application of the new value on
the table for a couple of milliseconds. This makes the filter process
much smoother for fast typing users working on large tables.

See issue #415.
This commit is contained in:
Martin Kleusberg
2015-10-15 11:42:59 +02:00
parent 9d7efcacfa
commit 71b7806f03
5 changed files with 114 additions and 42 deletions
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42
src/FilterTableHeader.cpp
View File

@@ -1,46 +1,8 @@
#include "FilterTableHeader.h"
#include "FilterLineEdit.h"
#include <QLineEdit>
#include <QTableView>
#include <QScrollBar>
#include <QKeyEvent>
#include <QDebug>
class FilterLineEdit : public QLineEdit
{
public:
explicit FilterLineEdit(QWidget* parent, QList<FilterLineEdit*>* filters, int columnnum) : QLineEdit(parent), filterList(filters), columnNumber(columnnum)
{
setPlaceholderText(tr("Filter"));
#if QT_VERSION >= QT_VERSION_CHECK(5, 2, 0)
setClearButtonEnabled(true);
#endif
setProperty("column", columnnum); // Store the column number for later use
}
protected:
void keyReleaseEvent(QKeyEvent* event)
{
if(event->key() == Qt::Key_Tab)
{
if(columnNumber < filterList->size() - 1)
{
filterList->at(columnNumber + 1)->setFocus();
event->accept();
}
} else if(event->key() == Qt::Key_Backtab) {
if(columnNumber > 0)
{
filterList->at(columnNumber - 1)->setFocus();
event->accept();
}
}
}
private:
QList<FilterLineEdit*>* filterList;
int columnNumber;
};
FilterTableHeader::FilterTableHeader(QTableView* parent) :
QHeaderView(Qt::Horizontal, parent)
@@ -78,7 +40,7 @@ void FilterTableHeader::generateFilters(int number, bool showFirst)
l->setVisible(false);
else
l->setVisible(true);
connect(l, SIGNAL(textChanged(QString)), this, SLOT(inputChanged(QString)));
connect(l, SIGNAL(delayedTextChanged(QString)), this, SLOT(inputChanged(QString)));
filterWidgets.push_back(l);
}