gui2::LayerSelectionModel Class Reference

Custom selection model for layer view model (AbstractViewModel). More...

Inheritance diagram for gui2::LayerSelectionModel:

Collaboration diagram for gui2::LayerSelectionModel:

Public Member Functions
	LayerSelectionModel (ModelView::ViewModel *view_model, QObject *parent=nullptr)
	~LayerSelectionModel ()=default
bool	firstSelected () const
	Checks if the first row is presen in the selection. More...
bool	lastSelected () const
	checks if the last row is present in the selection More...
std::vector< ModelView::SessionItem * >	selectedItems () const
	Returns vector of selected layers or multilayers. More...
void	selectItem (ModelView::SessionItem *item)
	Selects whole row corresponding to given item. More...
void	selectItems (std::vector< ModelView::SessionItem * > items)
	Selects all rows corresponding to given items. More...
const ModelView::ViewModel *	viewModel () const
	Return the casted view model. More...

Detailed Description

Custom selection model for layer view model (AbstractViewModel).

Definition at line 33 of file layerselectionmodel.h.

Constructor & Destructor Documentation

LayerSelectionModel()

gui2::LayerSelectionModel::LayerSelectionModel	(	ModelView::ViewModel *	view_model,
		QObject *	parent = nullptr
	)

Definition at line 23 of file layerselectionmodel.cpp.

    : QItemSelectionModel(view_model, parent)
{
    // FIXME cover with unit tests after implementing ViewItemSelectionModel
    connect(view_model, &ModelView::ViewModel::modelAboutToBeReset, [this]() { clearSelection(); });
}

~LayerSelectionModel()

gui2::LayerSelectionModel::~LayerSelectionModel ( )

default

Member Function Documentation

firstSelected()

bool gui2::LayerSelectionModel::firstSelected

(

)

const

Checks if the first row is presen in the selection.

Definition at line 81 of file layerselectionmodel.cpp.

{
    const QModelIndexList& selection = selectedRows();
    for (const auto& index : selection) {
        if (index.row() == 0)
            return true;
    }
    return false;
}

Referenced by gui2::LayerEditor::selectionChanged().

lastSelected()

bool gui2::LayerSelectionModel::lastSelected

(

)

const

checks if the last row is present in the selection

Definition at line 92 of file layerselectionmodel.cpp.

{
    const QModelIndexList& selection = selectedRows();
    for (const auto& index : selection) {
        if (index.row() == viewModel()->rowCount() - 1)
            return true;
    }
    return false;
}

References viewModel().

Referenced by gui2::LayerEditor::selectionChanged().

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selectedItems()

std::vector< ModelView::SessionItem * > gui2::LayerSelectionModel::selectedItems

(

)

const

Returns vector of selected layers or multilayers.

We assume, that there is a single line selection mode switched on, and that the columns contains property items related to either LayerItem or MultiLayerItem.

Definition at line 60 of file layerselectionmodel.cpp.

{
    const QModelIndexList& selection = selectedRows();
    if (selection.empty())
        return {};
 
    std::vector<ModelView::SessionItem*> result;
    for (const auto& index : selection)
        if (auto item = viewModel()->sessionItemFromIndex(index); item)
            result.push_back(item->parent());
 
    return result;
}

References viewModel().

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selectItem()

void gui2::LayerSelectionModel::selectItem

(

ModelView::SessionItem *

item

)

Selects whole row corresponding to given item.

Definition at line 51 of file layerselectionmodel.cpp.

{
    selectItems({item});
}

References selectItems().

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selectItems()

void gui2::LayerSelectionModel::selectItems

(

std::vector< ModelView::SessionItem * >

items

)

Selects all rows corresponding to given items.

Definition at line 32 of file layerselectionmodel.cpp.

{
    QModelIndexList indexes;
    for (auto item : items)
        indexes << viewModel()->indexOfSessionItem(item->getItem(LayerItem::P_NAME));
 
    if (indexes.empty())
        return;
 
    clearSelection();
 
    QItemSelection selection(indexes.front(), indexes.back());
    auto flags = QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows;
    select(selection, flags);
    //    setCurrentIndex(id, flags); What to do?
}

References ModelView::ViewModel::indexOfSessionItem(), gui2::LayerItem::P_NAME, and viewModel().

Referenced by selectItem().

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viewModel()

const ModelView::ViewModel * gui2::LayerSelectionModel::viewModel

(

)

const

Return the casted view model.

Definition at line 75 of file layerselectionmodel.cpp.

{
    return static_cast<const ModelView::ViewModel*>(model());
}

Referenced by lastSelected(), selectedItems(), and selectItems().

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

• /home/www/ba/gui2/layereditor/layerselectionmodel.h
• /home/www/ba/gui2/layereditor/layerselectionmodel.cpp