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Brush up the basicsortfiltermodel example

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- Add a clear button to the line edit
- Indicate invalid regular expressions

Change-Id: I1dbeaa0f9168224ccb9134c0c1fe281da14dcbce
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
This commit is contained in:
Friedemann Kleint 2020-10-09 09:26:19 +02:00
parent b0cd3bcec4
commit d55940d7f6
1 changed files with 25 additions and 1 deletions
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26
examples/widgets/itemviews/basicsortfiltermodel/window.cpp
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@ -52,6 +52,20 @@
#include "window.h"
static inline QColor textColor(const QPalette &palette)
{
return palette.color(QPalette::Active, QPalette::Text);
}
static void setTextColor(QWidget *w, const QColor &c)
{
auto palette = w->palette();
if (textColor(palette) != c) {
palette.setColor(QPalette::Active, QPalette::Text, c);
w->setPalette(palette);
}
}
Window::Window()
{
proxyModel = new QSortFilterProxyModel;
@ -70,6 +84,7 @@ Window::Window()
filterCaseSensitivityCheckBox = new QCheckBox(tr("Case sensitive filter"));
filterPatternLineEdit = new QLineEdit;
filterPatternLineEdit->setClearButtonEnabled(true);
filterPatternLabel = new QLabel(tr("&Filter pattern:"));
filterPatternLabel->setBuddy(filterPatternLineEdit);
@ -160,7 +175,16 @@ void Window::filterRegularExpressionChanged()
if (!filterCaseSensitivityCheckBox->isChecked())
options |= QRegularExpression::CaseInsensitiveOption;
QRegularExpression regularExpression(pattern, options);
proxyModel->setFilterRegularExpression(regularExpression);
if (regularExpression.isValid()) {
filterPatternLineEdit->setToolTip(QString());
proxyModel->setFilterRegularExpression(regularExpression);
setTextColor(filterPatternLineEdit, textColor(style()->standardPalette()));
} else {
filterPatternLineEdit->setToolTip(regularExpression.errorString());
proxyModel->setFilterRegularExpression(QRegularExpression());
setTextColor(filterPatternLineEdit, Qt::red);
}
}
void Window::filterColumnChanged()