QDirModel with QSortFilterProxyModel and regexp

[mchrk]

Hello,

I'm trying to create a QDirModel that only shows .cpp files but it doesn't display anything.
What am I doing wrong?

QDirModel dirModel;
QTreeView tree;
QSortFilterProxyModel proxyModel;
 
dirModel.setFilter( QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot );
 
proxyModel.setSourceModel(&dirModel);
tree.setModel(&proxyModel);
 
QModelIndex idx = proxyModel.mapFromSource(dirModel.index("./") );
tree.setRootIndex(idx);
 
 proxyModel.setFilterRegExp(QRegExp(".cpp", Qt::CaseInsensitive, QRegExp::FixedString));
 proxyModel.setFilterKeyColumn(0);
 
 tree.setAnimated(false);
 tree.setIndentation(20);
 tree.setSortingEnabled(true);
 
 tree.setWindowTitle(QObject::tr("Dir View"));
 tree.resize(640, 480);
 tree.show();

QDirModel dirModel;
QTreeView tree;
QSortFilterProxyModel proxyModel;
						
dirModel.setFilter( QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot );

proxyModel.setSourceModel(&dirModel);
tree.setModel(&proxyModel);
	
QModelIndex idx = proxyModel.mapFromSource(dirModel.index("./") );
tree.setRootIndex(idx);
		
 proxyModel.setFilterRegExp(QRegExp(".cpp", Qt::CaseInsensitive, QRegExp::FixedString));
 proxyModel.setFilterKeyColumn(0);
	
 tree.setAnimated(false);
 tree.setIndentation(20);
 tree.setSortingEnabled(true);

 tree.setWindowTitle(QObject::tr("Dir View"));
 tree.resize(640, 480);
 tree.show();

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[caduel]

assuming you want all files with the extension .cpp that would be one of

QRegExp("*.cpp", Qt::CaseInsensitive, QRegExp::WildCard)
QRegExp("\\.*.cpp", Qt::CaseInsensitive)

QRegExp("*.cpp", Qt::CaseInsensitive, QRegExp::WildCard)
QRegExp("\\.*.cpp", Qt::CaseInsensitive)

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Your regexp only matches files named ".cpp" without anything in front of it.

HTH

[wysota]

...or QRegExp(".*\\.cpp").

I'm not sure about mapping the slashdot like that, by the way.

[mchrk]

assuming you want all files with the extension .cpp that would be one of

QRegExp("*.cpp", Qt::CaseInsensitive, QRegExp::WildCard)
QRegExp("\\.*.cpp", Qt::CaseInsensitive)

QRegExp("*.cpp", Qt::CaseInsensitive, QRegExp::WildCard)
QRegExp("\\.*.cpp", Qt::CaseInsensitive)

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Your regexp only matches files named ".cpp" without anything in front of it.

HTH

Sorry, forgott to mention that I tried your approach to, this does not work, I just get a empty list.

[mchrk]

...or QRegExp(".*\\.cpp").

I'm not sure about mapping the slashdot like that, by the way.

How should I map it any other way? I tried to map it to "/Users/mchrk/code/foo/src/" and I got the same result as before (nothing).

[caduel]

@Wysota: oops... that was wrong of course. the \\ indeed has to be in front of the second .
@mchrk: have you checked if it works without setting a rootIndex?
have you checked that proxyModel.mapFromSource(dirModel.index("./") ) yields a valid QModelIndex?

[mchrk]

@Wysota: oops... that was wrong of course. the \\ indeed has to be in front of the second .
@mchrk: have you checked if it works without setting a rootIndex?
have you checked that proxyModel.mapFromSource(dirModel.index("./") ) yields a valid QModelIndex?

Yes I checked the model index with idx.isValid() and it returns true.