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authorFriedemann Kleint <Friedemann.Kleint@digia.com>2014-10-08 11:53:21 +0200
committerFriedemann Kleint <Friedemann.Kleint@digia.com>2014-10-08 12:32:41 +0200
commit5abd67e0645d2382861f86f6d3c6772e7727a811 (patch)
tree14bb74b95b2639dd9885846b8109297cf8195bed /examples
parenteef0ba60200d8039c05073ce707c2352ac0944a8 (diff)
downloadqtxmlpatterns-5abd67e0645d2382861f86f6d3c6772e7727a811.tar.gz
Polish schema example.
Add some error handling, fix warning on startup: QIODevice::read: device not open caused by MainWindow::schemaSelected(0) which clears the instance combo causing the current index to temporarily change to -1. Change-Id: I213d68b07b2dee4e2bbc1404aaf149ce7c189713 Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Diffstat (limited to 'examples')
-rw-r--r--examples/xmlpatterns/schema/mainwindow.cpp26
1 files changed, 22 insertions, 4 deletions
diff --git a/examples/xmlpatterns/schema/mainwindow.cpp b/examples/xmlpatterns/schema/mainwindow.cpp
index 0de5309..bb18e38 100644
--- a/examples/xmlpatterns/schema/mainwindow.cpp
+++ b/examples/xmlpatterns/schema/mainwindow.cpp
@@ -130,8 +130,15 @@ void MainWindow::schemaSelected(int index)
}
textChanged();
- QFile schemaFile(QString(":/schema_%1.xsd").arg(index));
- schemaFile.open(QIODevice::ReadOnly);
+ const QString fileName = QStringLiteral(":/schema_")
+ + QString::number(index) + QStringLiteral(".xsd");
+ QFile schemaFile(fileName);
+ if (!schemaFile.open(QIODevice::ReadOnly)) {
+ qWarning() << "Cannot open" << QDir::toNativeSeparators(fileName)
+ << ':' << schemaFile.errorString();
+ return;
+ }
+
const QString schemaText(QString::fromUtf8(schemaFile.readAll()));
schemaView->setPlainText(schemaText);
@@ -142,8 +149,19 @@ void MainWindow::schemaSelected(int index)
//! [2]
void MainWindow::instanceSelected(int index)
{
- QFile instanceFile(QString(":/instance_%1.xml").arg((2*schemaSelection->currentIndex()) + index));
- instanceFile.open(QIODevice::ReadOnly);
+ if (index < 0) {
+ instanceEdit->setPlainText(QString());
+ return;
+ }
+ const QString fileName = QStringLiteral(":/instance_")
+ + QString::number(2 * schemaSelection->currentIndex() + index)
+ + QStringLiteral(".xml");
+ QFile instanceFile(fileName);
+ if (!instanceFile.open(QIODevice::ReadOnly)) {
+ qWarning() << "Cannot open" << QDir::toNativeSeparators(fileName)
+ << ':' << instanceFile.errorString();
+ return;
+ }
const QString instanceText(QString::fromUtf8(instanceFile.readAll()));
instanceEdit->setPlainText(instanceText);