ModelView::TopItemsViewModel Class Reference

View model to show top level items of SessionModel in Qt trees and tables. More...

Inheritance diagram for ModelView::TopItemsViewModel:

Collaboration diagram for ModelView::TopItemsViewModel:

Public Member Functions
	TopItemsViewModel (SessionModel *model, QObject *parent=nullptr)
void	appendRow (ViewItem *parent, std::vector< std::unique_ptr< ViewItem >> items)
	Appends row of items to given parent. More...
void	clearRows (ViewItem *parent)
int	columnCount (const QModelIndex &parent=QModelIndex()) const override
QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
std::vector< ViewItem * >	findViews (const ModelView::SessionItem *item) const
	Returns vector of all ViewItem's representing given SessionItem. More...
Qt::ItemFlags	flags (const QModelIndex &index) const override
	Returns the item flags for the given index. More...
QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override
QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
QModelIndex	indexFromItem (const ViewItem *item) const
	Returns the QModelIndex associated with the given item. More...
QModelIndexList	indexOfSessionItem (const SessionItem *item) const
	Returns list of model indices representing given SessionItem. More...
void	insertRow (ViewItem *parent, int row, std::vector< std::unique_ptr< ViewItem >> items)
	Insert a row of items at index 'row' to given parent. More...
ViewItem *	itemFromIndex (const QModelIndex &index) const
	Returns a pointer to the RefViewItem associated with the given index. More...
QModelIndex	parent (const QModelIndex &child) const override
void	removeRow (ViewItem *parent, int row)
ViewItem *	rootItem () const
	Returns a pointer to invisible root item. More...
SessionItem *	rootSessionItem ()
int	rowCount (const QModelIndex &parent=QModelIndex()) const override
SessionItem *	sessionItemFromIndex (const QModelIndex &index) const
SessionModel *	sessionModel () const
bool	setData (const QModelIndex &index, const QVariant &value, int role) override
void	setRootSessionItem (SessionItem *item)
ViewItem *	viewItemFromIndex (const QModelIndex &index) const

Private Member Functions
void	setRootViewItem (std::unique_ptr< ViewItem > root_item)
	Sets new root item. Previous item will be deleted, model will be reset. More...

Private Attributes
std::unique_ptr< ViewModelController >	m_controller
std::unique_ptr< ViewModelBaseImpl >	p_impl

Detailed Description

View model to show top level items of SessionModel in Qt trees and tables.

All property items (i.e. "thickness", "color" etc) will be filtered out, top level items (i.e. Layer, MultiLayer, ...) will be presented as simple parent/child tree.

Definition at line 26 of file topitemsviewmodel.h.

Constructor & Destructor Documentation

TopItemsViewModel()

TopItemsViewModel::TopItemsViewModel	(	SessionModel *	model,
		QObject *	parent = nullptr
	)

Definition at line 20 of file topitemsviewmodel.cpp.

    : ViewModel(std::make_unique<TopItemsViewModelController>(model, this), parent)
{
}

Member Function Documentation

appendRow()

void ViewModelBase::appendRow ( ViewItem *  parent, std::vector< std::unique_ptr< ViewItem >>  items  )

inherited

Appends row of items to given parent.

Definition at line 165 of file viewmodelbase.cpp.

{
    insertRow(parent, parent->rowCount(), std::move(items));
}

References ModelView::ViewModelBase::insertRow(), and ModelView::ViewModelBase::parent().

Referenced by ModelView::ViewModelController::ViewModelControllerImpl::iterate(), and TEST_F().

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clearRows()

void ViewModelBase::clearRows ( ViewItem *  parent )

inherited

Definition at line 135 of file viewmodelbase.cpp.

{
    if (!p_impl->item_belongs_to_model(parent))
        throw std::runtime_error(
            "Error in ViewModelBase: attempt to use parent from another model");
 
    if (!parent->rowCount())
        return;
 
    beginRemoveRows(indexFromItem(parent), 0, parent->rowCount() - 1);
    parent->clear();
    endRemoveRows();
}

References ModelView::ViewModelBase::indexFromItem(), ModelView::ViewModelBase::p_impl, and ModelView::ViewModelBase::parent().

Referenced by ModelView::ViewModelController::ViewModelControllerImpl::remove_children_of_view(), and TEST_F().

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columnCount()

int ViewModelBase::columnCount ( const QModelIndex &  parent = QModelIndex() ) const

overrideinherited

Definition at line 70 of file viewmodelbase.cpp.

{
    auto parent_item = itemFromIndex(parent);
    return parent_item ? parent_item->columnCount() : rootItem()->columnCount();
}

References ModelView::ViewItem::columnCount(), ModelView::ViewModelBase::itemFromIndex(), ModelView::ViewModelBase::parent(), and ModelView::ViewModelBase::rootItem().

Referenced by ModelView::ViewModelBase::index(), and TEST_F().

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data()

QVariant ViewModelBase::data ( const QModelIndex &  index, int  role = Qt::DisplayRole  ) const

overrideinherited

Definition at line 76 of file viewmodelbase.cpp.

{
    if (!rootItem())
        return QVariant();
 
    auto item = itemFromIndex(index);
    return item ? item->data(role) : QVariant();
}

References ModelView::ViewModelBase::index(), ModelView::ViewModelBase::itemFromIndex(), and ModelView::ViewModelBase::rootItem().

Referenced by gui2::DataViewModel::canDropMimeData(), gui2::DataViewModel::dropMimeData(), ModelView::ViewModel::headerData(), and TEST_F().

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findViews()

std::vector< ViewItem * > ViewModel::findViews ( const ModelView::SessionItem *  item ) const

inherited

Returns vector of all ViewItem's representing given SessionItem.

Definition at line 81 of file viewmodel.cpp.

{
    return m_controller->findViews(item);
}

References ModelView::ViewModel::m_controller.

Referenced by TEST_F().

flags()

Qt::ItemFlags ViewModelBase::flags ( const QModelIndex &  index ) const

overrideinherited

Returns the item flags for the given index.

Definition at line 172 of file viewmodelbase.cpp.

{
    Qt::ItemFlags result = QAbstractItemModel::flags(index);
    if (auto item = itemFromIndex(index); item)
        result |= item->flags();
    return result;
}

References ModelView::ViewModelBase::index(), and ModelView::ViewModelBase::itemFromIndex().

Referenced by gui2::DataViewModel::flags(), and TEST_F().

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headerData()

QVariant ViewModel::headerData ( int  section, Qt::Orientation  orientation, int  role = Qt::DisplayRole  ) const

overrideinherited

Definition at line 30 of file viewmodel.cpp.

{
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
        auto data = m_controller->horizontalHeaderLabels();
        if (section < data.size())
            return data.at(section);
    }
    return QVariant();
}

References ModelView::ViewModelBase::data(), and ModelView::ViewModel::m_controller.

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index()

QModelIndex ViewModelBase::index ( int  row, int  column, const QModelIndex &  parent = QModelIndex()  ) const

overrideinherited

Definition at line 42 of file viewmodelbase.cpp.

{
    auto parent_item = itemFromIndex(parent) ? itemFromIndex(parent) : rootItem();
    const bool is_valid_row = row >= 0 && row < rowCount(parent);
    const bool is_valid_column = column >= 0 && column < columnCount(parent);
    return is_valid_row && is_valid_column
               ? createIndex(row, column, parent_item->child(row, column))
               : QModelIndex();
}

References ModelView::ViewModelBase::columnCount(), ModelView::ViewModelBase::itemFromIndex(), ModelView::ViewModelBase::parent(), ModelView::ViewModelBase::rootItem(), and ModelView::ViewModelBase::rowCount().

Referenced by ModelView::ViewModelBase::data(), gui2::DataViewModel::flags(), ModelView::ViewModelBase::flags(), ModelView::ViewModelBase::itemFromIndex(), ModelView::ViewModel::sessionItemFromIndex(), ModelView::ViewModelBase::setData(), TEST_F(), and ModelView::ViewModel::viewItemFromIndex().

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indexFromItem()

QModelIndex ViewModelBase::indexFromItem ( const ViewItem *  item ) const

inherited

Returns the QModelIndex associated with the given item.

Definition at line 117 of file viewmodelbase.cpp.

{
    return item && item->parent()
               ? createIndex(item->row(), item->column(), const_cast<ViewItem*>(item))
               : QModelIndex();
}

References ModelView::ViewItem::column(), ModelView::ViewItem::parent(), and ModelView::ViewItem::row().

Referenced by ModelView::ViewModelBase::clearRows(), ModelView::ViewModel::indexOfSessionItem(), ModelView::ViewModelBase::insertRow(), ModelView::ViewModelBase::ViewModelBaseImpl::item_belongs_to_model(), ModelView::ViewModelBase::removeRow(), and TEST_F().

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indexOfSessionItem()

QModelIndexList ViewModel::indexOfSessionItem ( const SessionItem *  item ) const

inherited

Returns list of model indices representing given SessionItem.

Definition at line 71 of file viewmodel.cpp.

{
    QModelIndexList result;
    for (auto view : m_controller->findViews(item))
        result.push_back(indexFromItem(view));
    return result;
}

References ModelView::ViewModelBase::indexFromItem(), and ModelView::ViewModel::m_controller.

Referenced by gui2::DataSelectionModel::selectItems(), gui2::LayerSelectionModel::selectItems(), gui2::MaterialSelectionModel::selectItems(), and TEST_F().

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insertRow()

void ViewModelBase::insertRow ( ViewItem *  parent, int  row, std::vector< std::unique_ptr< ViewItem >>  items  )

inherited

Insert a row of items at index 'row' to given parent.

Definition at line 151 of file viewmodelbase.cpp.

{
    if (!p_impl->item_belongs_to_model(parent))
        throw std::runtime_error(
            "Error in ViewModelBase: attempt to use parent from another model");
 
    beginInsertRows(indexFromItem(parent), row, row);
    parent->insertRow(row, std::move(items));
    endInsertRows();
}

References ModelView::ViewModelBase::indexFromItem(), ModelView::ViewModelBase::p_impl, and ModelView::ViewModelBase::parent().

Referenced by ModelView::ViewModelBase::appendRow(), ModelView::ViewModelController::ViewModelControllerImpl::insert_view(), and TEST_F().

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itemFromIndex()

ViewItem * ViewModelBase::itemFromIndex ( const QModelIndex &  index ) const

inherited

Returns a pointer to the RefViewItem associated with the given index.

If index is invalid, returns nullptr.

Definition at line 110 of file viewmodelbase.cpp.

{
    return index.isValid() ? static_cast<ViewItem*>(index.internalPointer()) : nullptr;
}

References ModelView::ViewModelBase::index().

Referenced by ModelView::ViewModelBase::columnCount(), ModelView::ViewModelBase::data(), ModelView::ViewModelController::ViewModelControllerImpl::findViews(), ModelView::ViewModelBase::flags(), ModelView::ViewModelBase::index(), ModelView::ViewModelBase::parent(), ModelView::ViewModelBase::rowCount(), ModelView::ViewModel::sessionItemFromIndex(), ModelView::ViewModelBase::setData(), TEST_F(), and ModelView::ViewModel::viewItemFromIndex().

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parent()

QModelIndex ViewModelBase::parent ( const QModelIndex &  child ) const

overrideinherited

Definition at line 52 of file viewmodelbase.cpp.

{
    if (auto child_item = itemFromIndex(child); child_item) {
        auto parent_item = child_item->parent();
        return parent_item == rootItem()
                   ? QModelIndex()
                   : createIndex(parent_item->row(), parent_item->column(), parent_item);
    }
 
    return QModelIndex();
}

References ModelView::ViewModelBase::itemFromIndex(), and ModelView::ViewModelBase::rootItem().

Referenced by ModelView::ViewModelBase::appendRow(), gui2::DataViewModel::canDropMimeData(), ModelView::ViewModelBase::clearRows(), ModelView::ViewModelBase::columnCount(), gui2::DataViewModel::dropMimeData(), ModelView::ViewModelBase::index(), ModelView::ViewModelBase::insertRow(), ModelView::ViewModelBase::removeRow(), ModelView::ViewModelBase::rowCount(), and TEST_F().

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removeRow()

void ViewModelBase::removeRow ( ViewItem *  parent, int  row  )

inherited

Definition at line 124 of file viewmodelbase.cpp.

{
    if (!p_impl->item_belongs_to_model(parent))
        throw std::runtime_error(
            "Error in ViewModelBase: attempt to use parent from another model");
 
    beginRemoveRows(indexFromItem(parent), row, row);
    parent->removeRow(row);
    endRemoveRows();
}

References ModelView::ViewModelBase::indexFromItem(), ModelView::ViewModelBase::p_impl, and ModelView::ViewModelBase::parent().

Referenced by ModelView::ViewModelController::ViewModelControllerImpl::remove_row_of_views(), and TEST_F().

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rootItem()

ViewItem * ViewModelBase::rootItem ( ) const

inherited

Returns a pointer to invisible root item.

Definition at line 102 of file viewmodelbase.cpp.

{
    return p_impl->root.get();
}

References ModelView::ViewModelBase::p_impl.

Referenced by ModelView::ViewModel::ViewModel(), ModelView::ViewModelBase::columnCount(), ModelView::ViewModelBase::data(), ModelView::ViewModelController::ViewModelControllerImpl::findViews(), ModelView::ViewModelBase::index(), ModelView::ViewModelController::ViewModelControllerImpl::init_view_model(), ModelView::ViewModelBase::ViewModelBaseImpl::item_belongs_to_model(), ModelView::ViewModelBase::parent(), ModelView::ViewModelBase::rowCount(), and TEST_F().

rootSessionItem()

SessionItem * ViewModel::rootSessionItem ( )

inherited

Definition at line 45 of file viewmodel.cpp.

{
    return m_controller->rootSessionItem();
}

References ModelView::ViewModel::m_controller.

rowCount()

int ViewModelBase::rowCount ( const QModelIndex &  parent = QModelIndex() ) const

overrideinherited

Definition at line 64 of file viewmodelbase.cpp.

{
    auto parent_item = itemFromIndex(parent);
    return parent_item ? parent_item->rowCount() : rootItem()->rowCount();
}

References ModelView::ViewModelBase::itemFromIndex(), ModelView::ViewModelBase::parent(), ModelView::ViewModelBase::rootItem(), and ModelView::ViewItem::rowCount().

Referenced by ModelView::ViewModelBase::index(), and TEST_F().

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sessionItemFromIndex()

SessionItem * ViewModel::sessionItemFromIndex ( const QModelIndex &  index ) const

inherited

Definition at line 59 of file viewmodel.cpp.

{
    return index.isValid() ? itemFromIndex(index)->item() : m_controller->rootSessionItem();
}

References ModelView::ViewModelBase::index(), ModelView::ViewItem::item(), ModelView::ViewModelBase::itemFromIndex(), and ModelView::ViewModel::m_controller.

Referenced by gui2::DataViewModel::canDropMimeData(), gui2::DataViewModel::dropMimeData(), gui2::DataViewModel::flags(), and TEST_F().

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sessionModel()

SessionModel * ViewModel::sessionModel ( ) const

inherited

Definition at line 40 of file viewmodel.cpp.

{
    return m_controller->sessionModel();
}

References ModelView::ViewModel::m_controller.

Referenced by ModelView::ViewModel::ViewModel(), and gui2::DataViewModel::dropMimeData().

setData()

bool ViewModelBase::setData ( const QModelIndex &  index, const QVariant &  value, int  role  )

overrideinherited

Definition at line 85 of file viewmodelbase.cpp.

{
    if (!index.isValid())
        return false;
 
    if (auto item = itemFromIndex(index); item) {
        bool result = item->setData(value, role);
        if (result)
            dataChanged(index, index, QVector<int>() << role);
        return result;
    }
 
    return false;
}

References ModelView::ViewModelBase::index(), and ModelView::ViewModelBase::itemFromIndex().

Referenced by TEST_F().

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setRootSessionItem()

void ViewModel::setRootSessionItem ( SessionItem *  item )

inherited

Definition at line 52 of file viewmodel.cpp.

{
    if (!item)
        throw std::runtime_error("Error in ViewModel: atttemp to set nulptr as root item");
    m_controller->setRootSessionItem(item);
}

References ModelView::ViewModel::m_controller.

Referenced by gui2::ImportDataEditor::ImportDataEditor(), ModelView::PropertyTreeView::setItem(), and TEST_F().

setRootViewItem()

void ViewModelBase::setRootViewItem ( std::unique_ptr< ViewItem >  root_item )

privateinherited

Sets new root item. Previous item will be deleted, model will be reset.

Definition at line 182 of file viewmodelbase.cpp.

{
    p_impl->root = std::move(root_item);
}

References ModelView::ViewModelBase::p_impl.

Referenced by ModelView::ViewModelBase::ViewModelBase(), and ModelView::ViewModelController::ViewModelControllerImpl::setRootSessionItemIntern().

viewItemFromIndex()

ViewItem * ViewModel::viewItemFromIndex ( const QModelIndex &  index ) const

inherited

Definition at line 64 of file viewmodel.cpp.

{
    return itemFromIndex(index);
}

References ModelView::ViewModelBase::index(), and ModelView::ViewModelBase::itemFromIndex().

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Member Data Documentation

m_controller

std::unique_ptr<ViewModelController> ModelView::ViewModel::m_controller

privateinherited

Definition at line 54 of file viewmodel.h.

Referenced by ModelView::ViewModel::ViewModel(), ModelView::ViewModel::findViews(), ModelView::ViewModel::headerData(), ModelView::ViewModel::indexOfSessionItem(), ModelView::ViewModel::rootSessionItem(), ModelView::ViewModel::sessionItemFromIndex(), ModelView::ViewModel::sessionModel(), and ModelView::ViewModel::setRootSessionItem().

p_impl

std::unique_ptr<ViewModelBaseImpl> ModelView::ViewModelBase::p_impl

privateinherited

Definition at line 70 of file viewmodelbase.h.

Referenced by ModelView::ViewModelBase::clearRows(), ModelView::ViewModelBase::insertRow(), ModelView::ViewModelBase::removeRow(), ModelView::ViewModelBase::rootItem(), and ModelView::ViewModelBase::setRootViewItem().

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The documentation for this class was generated from the following files:

• /home/www/ba/mvvm/viewmodel/mvvm/viewmodel/topitemsviewmodel.h
• /home/www/ba/mvvm/viewmodel/mvvm/viewmodel/topitemsviewmodel.cpp