How to show folder with certain file name in it



  • Now it compiles well. However, I want to show only files called abc.txt. I still don't know where is the file name in which variables. Any help?

    header
    @
    #ifndef MYCLASS_H
    #define MYCLASS_H
    #include <QSortFilterProxyModel>
    class myclass : public QSortFilterProxyModel
    {
    Q_OBJECT

    public:
    explicit myclass(QObject *parent = 0);

    protected:
    bool filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const;
    };

    #endif // MYCLASS_H
    @

    @

    #include "myclass.h"
    #include <QtGui>
    #include <QFileInfo>
    #include <QDir>
    #include <QString>
    #include <Qdebug>

    myclass::myclass(QObject *parent)
    : QSortFilterProxyModel(parent)
    {
    }

    bool myclass::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {
    QModelIndex index = sourceModel()->index(source_row, 0/column/, source_parent);
    QFileSystemModel* filemodel = qobject_cast<QFileSystemModel*>(sourceModel());

     qDebug() << filemodel->fileName(index) << filemodel->isDir(index) << filemodel->hasChildren(index);
    
     if (filemodel->fileName(index).contains("abc.txt", Qt::CaseInsensitive))
     {
         return true;
     }
         else
     {
         return false;
     }
    

    }

    @



  • Hi
    if you still using this:

    bq. QFileDialog dialog;
    myclass* proxyModel = new myclass();
    dialog.setProxyModel(proxyModel);
    dialog.exec();

    you need to set the source model to the proxy model like before:

    bq. QFileSystemModel *model = new QFileSystemModel;
    model->setRootPath(QDir::currentPath());
    MyClass *myClass = new MyClass;
    myClass->setSourceModel(model);
    QTreeView *tree = new QTreeView();
    tree->setModel(myClass);



  • I don't get the file info but the directory structure

    "/"
    "/Volumes/DATA/MAC/login-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug/login.app/Contents/MacOS"
    "/Volumes/DATA/MAC/login-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug/login.app/Contents"
    "/Volumes/DATA/MAC/login-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug/login.app"
    "/Volumes/DATA/MAC/login-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug"
    "/Volumes/DATA/MAC/tt-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug"
    "/Volumes/DATA/MAC"
    "/Volumes/DATA"
    "/Users"
    "/Volumes"
    QFileInfo::absolutePath: Constructed with empty filename
    2012-08-12 12:43:07.026 login[37625:407] Invalid URL passed to an open/save panel: '(null)'. Using 'file://localhost/Volumes/DATA/MAC/tt-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug/' instead.
    2012-08-12 12:43:07.786 login[37625:407] Invalid URL passed to an open/save panel: '(null)'. Using 'file://localhost/Volumes/DATA/MAC/tt-build-desktop-Desktop_Qt_4_7_3_for_GCC__Qt_SDK__Debug/' instead.
    "/"

    and when I do qDebug () << info.fileName();
    I get the folders without the path

    @
    void Login::on_loginbrowse_clicked()
    {
    // selecting a new setting.dB file
    //QSortFilterProxyModel *filterModel = new QSortFilterProxyModel(parent);
    //filterModel->setSourceModel(stringListModel);

    QFileSystemModel *model = new QFileSystemModel;
    model->setRootPath(QDir::currentPath());
    
    myclass *myClass  = new myclass (this);
    myClass->setSourceModel(model);
    
    QFileDialog *dialog = new QFileDialog;
    dialog->setDirectory(qApp->applicationDirPath());
    
    dialog->setProxyModel(myClass);
    dialog->exec&#40;&#41;;
    

    }
    @

    myclass
    @

    #include "myclass.h"
    #include <QtGui>
    #include <QFileInfo>
    #include <QDir>
    #include <QString>
    #include <Qdebug>

    myclass::myclass(QObject *parent)
    : QSortFilterProxyModel(parent)
    {
    }

    bool myclass::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {
    QModelIndex index = sourceModel()->index(source_row, 0/column/, source_parent);
    QFileSystemModel* filemodel = qobject_cast<QFileSystemModel*>(sourceModel());
    // QFileSystemModel filemodel = static_cast<QFileSystemModel>(sourceModel());
    filemodel->setRootPath(QDir::currentPath());
    QFileInfo info(filemodel->filePath(index));
    QString filePath = info.absoluteFilePath();
    QString fullPath = filemodel->fileInfo(index).absoluteFilePath();
    qDebug () << filePath;

     if (info.fileName().contains("Setting"))
     {
         return true;
     }
        return false;
    

    }

    @

    Header
    @
    #ifndef MYCLASS_H
    #define MYCLASS_H

    #include <QSortFilterProxyModel>
    class myclass : public QSortFilterProxyModel
    {
    Q_OBJECT

    public:
    explicit myclass(QObject *parent = 0);

    protected:
    bool filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const;
    };

    #endif // MYCLASS_H

    @



  • can you send me a working example. Please the full code, i am not accustomed to the terminologies used.



  • the following code works for me. i tested it on win7 but this QT so it need to run on MAC too.

    myfilterproxy.h
    @
    #ifndef MYFILTERPROXY_H
    #define MYFILTERPROXY_H

    #include <QSortFilterProxyModel>

    class MyFilterProxy : public QSortFilterProxyModel
    {
    Q_OBJECT
    public:
    explicit MyFilterProxy(QObject *parent = 0);

    protected:
    bool filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const;

    };

    #endif // MYFILTERPROXY_H
    @

    myfilterproxy.cpp

    @
    #include "myfilterproxy.h"
    #include <QDir>
    #include <QFileSystemModel>
    #include <QStringList>

    MyFilterProxy::MyFilterProxy(QObject *parent) :
    QSortFilterProxyModel(parent)
    {
    }

    bool MyFilterProxy::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {

    QModelIndex index = ((QFileSystemModel*)sourceModel())->index(source_row, 0/*column*/, source_parent);
    if( ((QFileSystemModel*)sourceModel())->isDir(index) && ((QFileSystemModel*)sourceModel())->hasChildren(index))
    {
        QString fullPath =   ((QFileSystemModel*)sourceModel())->fileInfo(index).absoluteFilePath();
        QDir dir(fullPath);
        QStringList children = dir.entryList( QDir::Files | QDir::NoSymLinks | QDir::NoDotAndDotDot);
        if( children.contains(QString("abc.txt")) )
            return true;
    }
    return false;
    

    }
    @

    main.cpp
    @
    #include <QtGui/QApplication>
    #include <QFileDialog>
    #include "myfilterproxy.h"

    int main(int argc, char *argv[])
    {
    QApplication a(argc, argv);
    MyFilterProxy myProxy;
    QFileDialog fileDialog;
    //its your call if to use this line (or default or other view mode)
    fileDialog.setViewMode(QFileDialog::Detail);
    fileDialog.setProxyModel(&myProxy);
    fileDialog.exec();
    return a.exec();
    }
    @

    i'll hope it help you.



  • I tested it but it does not function correctly. Lets change the function to make it simple. I want to be able to select abc.txt and unable to select all other files. Currently, I can select all files and folders.



  • sorry but i don't understand what you need to do exactly.
    you asked to show the user only the folder that include abc.txt and that what the code do.
    if you want that the user will show only the abc.txt files you can add a QRegExp to the MyFilterProxy and (i think) to remove the filterAcceptsRow

    or try this:
    @
    QFileDialog fileDialog;
    fileDialog.setFilter("abc.txt");
    fileDialog.exec();
    @

    the dialog will show you the file system and when you'll enter a folder with file name exactlly abc.txt you will see it and have the option to select it (the filter will ignore all other files name)



  • here is my last code.

    1- your code in the main, breaks on mac but the following works. It seems declaration should be only as pointers
    @
    myclass myProxy = new myclass;
    QFileDialog fileDialog = new QFileDialog;
    //fileDialog->setDirectory(qApp->applicationDirPath());
    //its your call if to use this line (or default or other view mode)
    fileDialog->setViewMode(QFileDialog::Detail);
    fileDialog->setProxyModel(myProxy);
    fileDialog->exec();
    @
    2- In myclass, I use the following code
    @ QModelIndex index = sourceModel()->index(source_row, 0/column/, source_parent);
    QFileSystemModel
    filemodel = qobject_cast<QFileSystemModel
    >(sourceModel());
    // QFileSystemModel filemodel = static_cast<QFileSystemModel>(sourceModel());
    filemodel->setRootPath(QDir::currentPath());
    QString fullPath = filemodel->fileInfo(index).absoluteFilePath();
    QDir dir(fullPath);
    QStringList children = dir.entryList( QDir::Files | QDir::NoSymLinks | QDir::NoDotAndDotDot);
    qDebug () << children;
    @
    It prints now the files in the folders

    Now I need to check in the Qstringlist for the file "abc.txt" and return true for this file only otherwise false.

     foreach (QString str,children)
        {
            
        }
    


  • Yes, I changed the target, instead of showing the folder that contains the file. I show the files and make the file "abc.txt" selectable .

    The setfilter does not work properly, it shows me all files are unselectable
    @QFileDialog fileDialog;
    fileDialog.setFilter("abc.txt");
    fileDialog.exec();
    @



  • first about your code bq. foreach (QString str,children) { }
    you can use:
    @if(children.contains("abc.txt")) return true; else false;@

    and about your last message:
    [quote author="SherifOmran" date="1344846279"]Yes, I changed the target, instead of showing the folder that contains the file. I show the files and make the file "abc.txt" selectable .

    [/quote]
    lets say you have 2 files named "abc.txt" at the paths:
    "C:\some_folder\abc.txt" and
    "D:\other_folder\new_folder\abc.txt"

    what you want the user will show in the QFileDialog?
    how the user will navigate to the paths if he will not see the folders (of the file system)

    please explain in more details as you can, what you are asking for and what you want the user will see, and if you have a image or you see your request working some where please refer to it



  • I want the user to see all folders but when he gets inside it, he does not see except only the abc.txt file to select it, all other files are hidden. something like in any open file in a windows program, say winword in the open window one sees *.doc but I can write abc.doc in the window and it will be filtered automatically.



  • hi i used this code: (as before)
    @
    #include <QtGui/QApplication>
    #include <QFileDialog>

    int main(int argc, char *argv[])
    {
    QApplication a(argc, argv);
    QFileDialog fileDialog;
    fileDialog.setViewMode(QFileDialog::Detail);
    fileDialog.setFilter("csb.log");
    fileDialog.exec();
    return a.exec();
    }
    @

    and is work it show me all folder and when i insert to folder if there are files he show me only the
    csb.log if it exist or only folder if not
    i don't have a MAC to test it so i don't know why it's not working to you



  • This code works on MAC only with a *

    @
    fileDialog.setFilter("*.log");
    @

    but once you put a filename, all files are disabled.



  • see this, setfilter controls only the file type
    @
    void QFileDialog::setFilter ( QDir::Filters filters )
    Sets the filter used by the model to filters. The filter is used to specify the kind of files that should be shown.

    This function was introduced in Qt 4.4.
    @



  • we are 1 step forward, i use this in the mycalss.cpp
    @
    QStringList files = dir.entryList(QStringList("abc.txt"),
    QDir::Files | QDir::NoSymLinks);

        qDebug () << files << files.contains("abc.txt");
    

    @
    now I get in the debug when I click on browse

    @
    () false
    ("abc.txt") true
    () false
    @

    but it ignores my if condition simply and shows me all the files ...

    any idea? may be i ve a mistake in the call?



  • [quote author="SherifOmran" date="1344933412"]we are 1 step forward, i use this in the mycalss.cpp

    but it ignores my if condition simply and shows me all the files ...
    [/quote]
    which if condition?



  • class

    @

    bool myclass::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {

    QModelIndex index = sourceModel()->index(source_row, 0/*column*/, source_parent);
         QFileSystemModel* filemodel = qobject_cast<QFileSystemModel*>(sourceModel());
        // QFileSystemModel *filemodel = static_cast<QFileSystemModel*>(sourceModel());
        filemodel->setRootPath(QDir::currentPath());
        QString fullPath =   filemodel->fileInfo(index).absoluteFilePath();
        QDir dir(fullPath);
    
        QStringList  files = dir.entryList(QStringList("abc.txt"),
                                     QDir::Files | QDir::NoSymLinks);
    
        qDebug () << files << files.contains("abc.txt");
    

    if (files.contains("abc.txt")) return true; else false;

    }

    @



  • so you need to change the filterAcceptsRow function to be as:
    if the index represent a folder return true
    else if its a file and his name == to "abc.txt" return true
    else return false
    in that case you will get all folder (as empty) and you'll see only the file with name "abc.txt"

    @
    bool myclass::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {
    QModelIndex index = sourceModel()->index(source_row, 0/column/, source_parent);
    QFileSystemModel* filemodel = qobject_cast<QFileSystemModel*>(sourceModel());
    QFileInfo indexInfo = filemodel->fileInfo(index);
    if( indexInfo.isDir())
    return true;
    else if (indexInfo.isFile() && indexInfo.fileName() == QString("abc.txt"))
    return true;
    else return false;
    }
    @



  • It does not work.

    I use this as the calling function, is it correct?
    @
    QFileDialog *fileDialog = new QFileDialog;
    myclass *sourceModel = new myclass;
    QSortFilterProxyModel *proxyModel = new QSortFilterProxyModel(this);
    proxyModel->setSourceModel(sourceModel);
    fileDialog->setProxyModel(proxyModel);
    fileDialog->show();
    @



  • please see this link, it seems there is a bug
    https://bugreports.qt-project.org/browse/QTBUG-7739



  • the bug report refer to code like this:
    @
    QFileDialog fileDialog;
    fileDialog.setFilter("abc.txt");
    fileDialog.exec();
    @

    and not for the code using QSortFilterProxyModel.
    about your code:
    [quote author="SherifOmran" date="1344951506"]It does not work.

    I use this as the calling function, is it correct?
    @
    QFileDialog *fileDialog = new QFileDialog;
    myclass *sourceModel = new myclass;
    QSortFilterProxyModel *proxyModel = new QSortFilterProxyModel(this);
    proxyModel->setSourceModel(sourceModel);
    fileDialog->setProxyModel(proxyModel);
    fileDialog->show();
    @
    .
    [/quote]

    you use it in the wrong way instead use it as follow

    @
    QFileDialog *fileDialog = new QFileDialog;
    //you implemented MyClass as proxy model so you need to set it in QFileDialog as proxyModel
    myclass *proxyModel = new myclass;
    fileDialog->setProxyModel(proxyModel);
    fileDialog->show();
    @

    and use the filterAcceptRow as before

    [quote author="lahianim" date="1344944559"]so you need to change the filterAcceptsRow function to be as:
    if the index represent a folder return true
    else if its a file and his name == to "abc.txt" return true
    else return false
    in that case you will get all folder (as empty) and you'll see only the file with name "abc.txt"

    @
    bool myclass::filterAcceptsRow ( int source_row, const QModelIndex & source_parent ) const
    {
    QModelIndex index = sourceModel()->index(source_row, 0/column/, source_parent);
    QFileSystemModel* filemodel = qobject_cast<QFileSystemModel*>(sourceModel());
    QFileInfo indexInfo = filemodel->fileInfo(index);
    if( indexInfo.isDir())
    return true;
    else if (indexInfo.isFile() && indexInfo.fileName() == QString("abc.txt"))
    return true;
    else return false;
    }
    @[/quote]



  • even this, it does not work my friend on MAC. It seems to be a bug.




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