QDirModel and QTreeView

[ChMaster]

hi guys,

i have a littel problem with QDirModel.

QString workspace = QFileDialog::getExistingDirectory( this, tr("Open worspace"), QDir::homePath() );
if ( workspace.isEmpty() )
    return;
 
QDirModel *model = new QDirModel();
model->setFilter( QDir::AllDirs );	
model->setLazyChildCount( true );
model->setData( model->index( workspace ), QVariant(workspace), Qt::DisplayRole );
model->setHeaderData(0, Qt::Horizontal, workspace); 
 
tvWorkspace->setModel( model );
tvWorkspace->setRootIndex( model->index( workspace ) );
tvWorkspace->header()->setSortIndicatorShown( true );
tvWorkspace->header()->setClickable( true );
tvWorkspace->setColumnHidden( 1, true );
tvWorkspace->setColumnHidden( 2, true );
tvWorkspace->setColumnHidden( 3, true );
 
connect( tvWorkspace, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( workspaceItemChanged( const QModelIndex & ) ) );

QString workspace = QFileDialog::getExistingDirectory( this, tr("Open worspace"), QDir::homePath() );
if ( workspace.isEmpty() )
    return;
	    
QDirModel *model = new QDirModel();
model->setFilter( QDir::AllDirs );	
model->setLazyChildCount( true );
model->setData( model->index( workspace ), QVariant(workspace), Qt::DisplayRole );
model->setHeaderData(0, Qt::Horizontal, workspace); 
	
tvWorkspace->setModel( model );
tvWorkspace->setRootIndex( model->index( workspace ) );
tvWorkspace->header()->setSortIndicatorShown( true );
tvWorkspace->header()->setClickable( true );
tvWorkspace->setColumnHidden( 1, true );
tvWorkspace->setColumnHidden( 2, true );
tvWorkspace->setColumnHidden( 3, true );
	
connect( tvWorkspace, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( workspaceItemChanged( const QModelIndex & ) ) );

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it is work but i see only the folders in this QTreeView:

|-include
|-src
|-ui

but i would like this:

/home/alex/project/test
|-include
|-src
|-ui

i searched on forum index, but can not found items of this ....
but how? can anyone help me? .....

[wysota]

You mean you want the whole directory path to be displayed for the root item?

[ChMaster]

yes,

but i can not find examples/solution for this
i have all tested ..... or?

[wysota]

Subclass the model and reimplement data() to return an absolute path for items with invalid parents, more or less like so:

QVariant MyDirModel::data(const QModelIndex & index, int role) const{
  if((role==DisplayRole || role==EditRole) 
  && index.isValid() && !index.parent().isValid()) 
    return filePath(index);
  return QDirModel::data(index, role);
}

QVariant MyDirModel::data(const QModelIndex & index, int role) const{
  if((role==DisplayRole || role==EditRole) 
  && index.isValid() && !index.parent().isValid()) 
    return filePath(index);
  return QDirModel::data(index, role);
}

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[ChMaster]

the target is nearby

MTWorkSpaceModel *model = new MTWorkSpaceModel();
 
QDirModel *modelDir = new QDirModel();	
modelDir->setFilter( QDir::AllDirs );
modelDir->setLazyChildCount( true );
QVariant data = model->data( modelDir->index( workspace ), Qt::DisplayRole );
qDebug() << data; // data returns QVariant(QString, "/home/alex/test")
 
modelDir->setData( modelDir->index( workspace ), data, Qt::DisplayRole );
 
dirModel = modelDir;
 
tvWorkspace->setModel( modelDir );
tvWorkspace->setRootIndex( modelDir->index( workspace ) );
tvWorkspace->header()->setSortIndicatorShown( true );
tvWorkspace->header()->setClickable( true );
tvWorkspace->setColumnHidden( 1, true );
tvWorkspace->setColumnHidden( 2, true );
tvWorkspace->setColumnHidden( 3, true );
 
connect( tvWorkspace, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( workspaceItemChanged( const QModelIndex & ) ) );

MTWorkSpaceModel *model = new MTWorkSpaceModel();
	
QDirModel *modelDir = new QDirModel();	
modelDir->setFilter( QDir::AllDirs );
modelDir->setLazyChildCount( true );
QVariant data = model->data( modelDir->index( workspace ), Qt::DisplayRole );
qDebug() << data; // data returns QVariant(QString, "/home/alex/test")
	
modelDir->setData( modelDir->index( workspace ), data, Qt::DisplayRole );

dirModel = modelDir;
	
tvWorkspace->setModel( modelDir );
tvWorkspace->setRootIndex( modelDir->index( workspace ) );
tvWorkspace->header()->setSortIndicatorShown( true );
tvWorkspace->header()->setClickable( true );
tvWorkspace->setColumnHidden( 1, true );
tvWorkspace->setColumnHidden( 2, true );
tvWorkspace->setColumnHidden( 3, true );

connect( tvWorkspace, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( workspaceItemChanged( const QModelIndex & ) ) );

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MTWorkSpaceModel

QVariant MTWorkSpaceModel::data( const QModelIndex & index, int role ) const {
	if((role == Qt::DisplayRole || role == Qt::EditRole ) && index.isValid() && index.parent().isValid())
	    return filePath( index );
 
	return QDirModel::data( index, role );
}

QVariant MTWorkSpaceModel::data( const QModelIndex & index, int role ) const {
	if((role == Qt::DisplayRole || role == Qt::EditRole ) && index.isValid() && index.parent().isValid())
	    return filePath( index );
	
	return QDirModel::data( index, role );
}

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but not realy function .... why? is the error on

modelDir->setData( modelDir->index( workspace ), data, Qt::DisplayRole );

modelDir->setData( modelDir->index( workspace ), data, Qt::DisplayRole );

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or

tvWorkspace->setRootIndex( modelDir->index( workspace ) );

tvWorkspace->setRootIndex( modelDir->index( workspace ) );

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sorry for my bad english

[wysota]

What exactly doesn't work? Could you describe the problem?

[ChMaster]

i have the subclass created and QDirModel reimplemented with QVariant data(...)

in the code (see above) set i the data of QDirModel with my subclass ....
but it is not function, i see in the treeview only the folder
|-ui
|-src
|-include

but not
/home/alex/test
|-ui
|-src
|-include

in short form: i can not see rootItem .....

[wysota]

See the attached file for a working version.

[ChMaster]

thank you very much, for this example, i'm so happy and it works *kiss*