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Thread: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterProxymo

  1. #1
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    Default Get names of filtered files,folders in list using QFileSystemModel,QSortFilterProxymo

    I am using QFileSystemModel for exploring my drive and QSortFilterProxyModel for filtering all the files and folders in it. It works well when i try to display the model in a QTreeview. Now my problem is, when i try to get all the files and folders names in a list. It gives me unfiltered names. I am using this:


    Qt Code:
    1. QFileSystemModel *fileSystemModel;
    2. fileSystemModel = new QFileSystemModel(this);
    3. QSortFilterProxyModel proxyModel = new QSortFilterProxyModel(targetDir);
    4. QModelIndex rootModelIndex = fileSystemModel->setRootPath(path);
    5. QStringList filters;
    6. filters <<"*.jpeg" <<"*.pict" ;
    7. fileSystemModel->setNameFilters(filters);
    8. fileSystemModel->setNameFilterDisables(0);
    9. proxyModel->setSourceModel(fileSystemModel);
    10. fileSystemModel->fetchMore(rootModelIndex);
    11. fileSystemModel->sort(0,Qt::AscendingOrder);
    12. ui->treeView_2->setModel(proxyModel);
    13. ui->treeView_2->setRootIndex(proxyModel->mapFromSource(rootModelIndex));
    14. connect(fileSystemModel,SIGNAL(directoryLoaded(QString)),this,SLOT(onDirLoaded(QString)));
    15.  
    16. for names list i am using the Directoryloaded() signal of QFileSystemModel:
    17.  
    18. void MainWindow::onDirLoaded(QString path)
    19. {
    20. QModelIndex index = fileSystemModel->index(path);
    21. int rowCount = fileSystemModel->rowCount(index);
    22. for(int i=0;i<rowCount;i++)
    23. {
    24. QModelIndex mi = fileSystemModel->index(i,0,index);
    25.  
    26. QFileInfo fileInfo = fileSystemModel->fileInfo(mi);
    27. if (!templist.contains(fileInfo.absoluteFilePath()))
    28. {
    29. templist << fileInfo.absoluteFilePath();
    30. tempNamelist << fileInfo.fileName();
    31. }
    32. if(!bloaded)
    33. {
    34. if(fileSystemModel->hasChildren(mi))
    35. {
    36. QModelIndex index1 = fileSystemModel->index(i,0,index);
    37. int rowCount1 = fileSystemModel->rowCount(index1);
    38. if(rowCount1)
    39. {
    40. onDirLoaded(fileInfo.absoluteFilePath());
    41. }
    42. }
    43. }
    44. }
    45. }
    To copy to clipboard, switch view to plain text mode 

    After this i am getting list of all the files and folders but its unfiltered names.I want filtered names. Is there anyone who can help me in this ? Your help will really appreciate guys.
    Thanks.

  2. #2
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    Not sure what your problem is.
    The slot works with the QFIleSystemModel instance which of course doesn't know anything about things the QSortFilterProxyModel does.

    If you want to get the things the view sees, you have to get the data from the same model that the view uses.

    Cheers,
    _

  3. #3
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    Thanks for your response, I am doing the same as you are saying. I am trying to get the names from the same model but i think i am missing something. Can you tell me how to use the data of that model ? FYI, my problem is I want filtered names list of only those files and folders which have a particular type of file extension(*.mp3,*.jpg).
    Really appreciate if you could help me out of this.
    Thanks.
    Last edited by Dev; 29th October 2013 at 03:29.

  4. #4
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    Quote Originally Posted by Dev View Post
    Thanks for your response, I am doing the same as you are saying. I am trying to get the names from the same model but i think i am missing something.
    The code you posted used different models. The view uses a filter proxy model, the slot uses the file system model.

    If your current code is different and you use the filtered data in both places and it still does not work, please post updated code.

    Cheers,
    _

  5. #5
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    thanks,
    Its my updated code.First half of the code is working fine.

    Qt Code:
    1. QFileSystemModel *fileSystemModel;
    2. fileSystemModel = new QFileSystemModel(this);
    3. QSortFilterProxyModel proxyModel = new QSortFilterProxyModel(targetDir);
    4. QModelIndex rootModelIndex = fileSystemModel->setRootPath(path);
    5. QStringList filters;
    6. filters <<"*.jpeg" <<"*.pict" ;
    7. fileSystemModel->setNameFilters(filters);
    8. fileSystemModel->setNameFilterDisables(0);
    9. proxyModel->setSourceModel(fileSystemModel);
    10. fileSystemModel->fetchMore(rootModelIndex);
    11. fileSystemModel->sort(0,Qt::AscendingOrder);
    12. ui->treeView_2->setModel(proxyModel);
    13. ui->treeView_2->setRootIndex(proxyModel->mapFromSource(rootModelIndex));
    To copy to clipboard, switch view to plain text mode 

    after this i am trying to fill the names of files and folders in the model. so i am calling a signal directoryloaded() for files and folders names from the model and the model name is fileSystemModel. Thats i am using that model in other part of my code. Am i on right way ? If not then tell me what is the proper solution for getting names. Thanks.

  6. #6
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    Ah, but the problem is in the other part of the code.

    See, for the view you are using
    Qt Code:
    1. ui->treeView_2->setModel(proxyModel);
    To copy to clipboard, switch view to plain text mode 

    But for the slot you are using
    Qt Code:
    1. int rowCount = fileSystemModel->rowCount(index);
    To copy to clipboard, switch view to plain text mode 

    Are those the same? I.e. is that the same pointer just with different names in different code parts?

    Cheers,
    _

  7. The following user says thank you to anda_skoa for this useful post:

    Dev (15th November 2013)

  8. #7
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    thanks, i have done it. it works fine.
    But In my second part of the code, i am not getting the filtered names of the files and subfolders as my treeview is displaying.
    Can you please tell what is problem behind this ?

  9. #8
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    Default Re: Get names of filtered files,folders in list using QFileSystemModel,QSortFilterPro

    Just to be sure: your onDirectoryLoaded() now also uses the proxyModel instance?

    Cheers,
    _

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