Cleanup Itemviews examples

Cleanup the Itemviews examples
 - use nullptr instead 0
 - use for loop instead foreach
 - include own header first
 - remove uselss includes

Change-Id: I32e9f64356e42038707d063dcad977239ce1fe9e
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>

4 files changed, 15 insertions, 11 deletions

diff --git a/examples/widgets/itemviews/customsortfiltermodel/filterwidget.cpp b/examples/widgets/itemviews/customsortfiltermodel/filterwidget.cpp
index 74d88caae6..302042a6b3 100644
--- a/examples/widgets/itemviews/customsortfiltermodel/filterwidget.cpp
+++ b/examples/widgets/itemviews/customsortfiltermodel/filterwidget.cpp
@@ -52,13 +52,11 @@
 
 #include <QIcon>
 #include <QPixmap>
-#include <QImage>
 #include <QMenu>
 #include <QAction>
 #include <QActionGroup>
 #include <QToolButton>
 #include <QWidgetAction>
-#include <QDebug>
 
 FilterWidget::FilterWidget(QWidget *parent)
     : QLineEdit(parent)
@@ -127,7 +125,8 @@ QRegExp::PatternSyntax FilterWidget::patternSyntax() const
 
 void FilterWidget::setPatternSyntax(QRegExp::PatternSyntax s)
 {
-    foreach (QAction *a, m_patternGroup->actions()) {
+    const QList<QAction*> actions = m_patternGroup->actions();
+    for (QAction *a : actions) {
         if (patternSyntaxFromAction(a) == s) {
             a->setChecked(true);
             break;
diff --git a/examples/widgets/itemviews/customsortfiltermodel/filterwidget.h b/examples/widgets/itemviews/customsortfiltermodel/filterwidget.h
index ea12954e52..70214b862e 100644
--- a/examples/widgets/itemviews/customsortfiltermodel/filterwidget.h
+++ b/examples/widgets/itemviews/customsortfiltermodel/filterwidget.h
@@ -67,7 +67,7 @@ class FilterWidget : public QLineEdit
     Q_PROPERTY(Qt::CaseSensitivity caseSensitivity READ caseSensitivity WRITE setCaseSensitivity)
     Q_PROPERTY(QRegExp::PatternSyntax patternSyntax READ patternSyntax WRITE setPatternSyntax)
 public:
-    explicit FilterWidget(QWidget *parent = 0);
+    explicit FilterWidget(QWidget *parent = nullptr);
 
     Qt::CaseSensitivity caseSensitivity() const;
     void setCaseSensitivity(Qt::CaseSensitivity);
diff --git a/examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp b/examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp
index 35426657d9..4753d04d9b 100644
--- a/examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp
+++ b/examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp
@@ -48,10 +48,10 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
-
 #include "mysortfilterproxymodel.h"
 
+#include <QtWidgets>
+
 //! [0]
 MySortFilterProxyModel::MySortFilterProxyModel(QObject *parent)
     : QSortFilterProxyModel(parent)
@@ -77,7 +77,7 @@ void MySortFilterProxyModel::setFilterMaximumDate(const QDate &date)
 
 //! [3]
 bool MySortFilterProxyModel::filterAcceptsRow(int sourceRow,
-        const QModelIndex &sourceParent) const
+                                              const QModelIndex &sourceParent) const
 {
     QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
     QModelIndex index1 = sourceModel()->index(sourceRow, 1, sourceParent);
diff --git a/examples/widgets/itemviews/customsortfiltermodel/window.cpp b/examples/widgets/itemviews/customsortfiltermodel/window.cpp
index bfd2350da0..3356c971ad 100644
--- a/examples/widgets/itemviews/customsortfiltermodel/window.cpp
+++ b/examples/widgets/itemviews/customsortfiltermodel/window.cpp
@@ -48,12 +48,12 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
-
-#include "mysortfilterproxymodel.h"
 #include "window.h"
+#include "mysortfilterproxymodel.h"
 #include "filterwidget.h"
 
+#include <QtWidgets>
+
 //! [0]
 Window::Window()
 {
@@ -75,7 +75,7 @@ Window::Window()
 
     //! [3]
     filterWidget = new FilterWidget;
-    filterWidget->setText("Grace|Sports");
+    filterWidget->setText(tr("Grace|Sports"));
     connect(filterWidget, &FilterWidget::filterChanged, this, &Window::textFilterChanged);
 
     filterPatternLabel = new QLabel(tr("&Filter pattern:"));
@@ -137,6 +137,11 @@ void Window::setSourceModel(QAbstractItemModel *model)
 {
     proxyModel->setSourceModel(model);
     sourceView->setModel(model);
+
+    for (int i = 0; i < proxyModel->columnCount(); ++i)
+        proxyView->resizeColumnToContents(i);
+    for (int i = 0; i < model->columnCount(); ++i)
+        sourceView->resizeColumnToContents(i);
 }
 //! [7]