ModelView::ViewItem Class Reference

Represents the view of SessionItem's data in a single cell of ViewModel. More...

Inheritance diagram for ModelView::ViewItem:

Classes
struct	ViewItemImpl

Public Member Functions
virtual	~ViewItem ()
void	appendRow (std::vector< std::unique_ptr< ViewItem >> items)
	Appends a row containing items. More...
ViewItem *	child (int row, int column) const
std::vector< ViewItem * >	children () const
void	clear ()
int	column () const
	Returns the column where the item is located in its parent's child table, or -1 if the item has no parent. More...
int	columnCount () const
	Returns the number of child item columns that the item has. More...
virtual QVariant	data (int qt_role) const
	Returns the data for given role according to Qt::ItemDataRole namespace definitions. More...
virtual Qt::ItemFlags	flags () const
	Returns Qt's item flags. More...
void	insertRow (int row, std::vector< std::unique_ptr< ViewItem >> items)
	Insert a row of items at index 'row'. More...
SessionItem *	item () const
int	item_role () const
ViewItem *	parent () const
void	removeRow (int row)
	Removes row of items at given 'row'. Items will be deleted. More...
int	row () const
	Returns the row where the item is located in its parent's child table, or -1 if the item has no parent. More...
int	rowCount () const
	Returns the number of child item rows that the item has. More...
virtual bool	setData (const QVariant &value, int qt_role)
	Sets the data to underlying SessionItem. More...

Protected Member Functions
	ViewItem (SessionItem *item, int role)
void	setParent (ViewItem *parent)

Private Attributes
std::unique_ptr< ViewItemImpl >	p_impl

Detailed Description

Represents the view of SessionItem's data in a single cell of ViewModel.

Definition at line 29 of file viewitem.h.

Constructor & Destructor Documentation

~ViewItem()

ViewItem::~ViewItem ( )

virtualdefault

ViewItem()

ViewItem::ViewItem ( SessionItem *  item, int  role  )

protected

Definition at line 105 of file viewitem.cpp.

                                              : p_impl(std::make_unique<ViewItemImpl>(item, role))
{
}

Member Function Documentation

appendRow()

void ViewItem::appendRow

(

std::vector< std::unique_ptr< ViewItem >>

items

)

Appends a row containing items.

Number of items should be the same as columnCount() (if there are already some rows). If it is a first row, then items can be of any size.

Definition at line 128 of file viewitem.cpp.

{
    for (auto& x : items)
        x->setParent(this);
    p_impl->appendRow(std::move(items));
}

References p_impl.

child()

ViewItem * ViewItem::child	(	int	row,
		int	column
	)		const

Definition at line 163 of file viewitem.cpp.

{
    return p_impl->child(row, column);
}

References column(), p_impl, and row().

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children()

std::vector< ViewItem * > ViewItem::children

(

)

const

Definition at line 237 of file viewitem.cpp.

{
    return p_impl->get_children();
}

References p_impl.

Referenced by ModelView::ViewModelController::ViewModelControllerImpl::remove_children_of_view().

clear()

void ViewItem::clear

(

)

Definition at line 151 of file viewitem.cpp.

{
    p_impl->children.clear();
    p_impl->rows = 0;
    p_impl->columns = 0;
}

References p_impl.

column()

int ViewItem::column

(

)

const

Returns the column where the item is located in its parent's child table, or -1 if the item has no parent.

Definition at line 190 of file viewitem.cpp.

{
    auto index = parent() ? parent()->p_impl->index_of_child(this) : -1;
    return index >= 0 ? index % parent()->p_impl->columns : -1;
}

References p_impl, and parent().

Referenced by ModelView::ViewItem::ViewItemImpl::child(), child(), and ModelView::ViewModelBase::indexFromItem().

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columnCount()

int ViewItem::columnCount

(

)

const

Returns the number of child item columns that the item has.

Definition at line 120 of file viewitem.cpp.

{
    return p_impl->columns;
}

References p_impl.

Referenced by ModelView::ViewModelBase::columnCount().

data()

QVariant ViewItem::data ( int  qt_role ) const

virtual

Returns the data for given role according to Qt::ItemDataRole namespace definitions.

Converts data and roles from underlying SessionItem to what Qt expects.

Reimplemented in ModelView::ViewDataItem, ModelView::ViewLabelItem, and ModelView::ViewEmptyItem.

Definition at line 199 of file viewitem.cpp.

{
    if (!p_impl->item)
        return QVariant();
 
    if (qt_role == Qt::DisplayRole || qt_role == Qt::EditRole)
        return Utils::toQtVariant(p_impl->data());
#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
    else if (qt_role == Qt::ForegroundRole)
#else
    else if (qt_role == Qt::TextColorRole)
#endif
        return Utils::TextColorRole(*p_impl->item);
    else if (qt_role == Qt::ToolTipRole)
        return Utils::ToolTipRole(*p_impl->item);
    else
        return QVariant();
}

References SessionItemUtils::ForegroundRole(), p_impl, ModelView::Utils::TextColorRole(), ModelView::Utils::ToolTipRole(), SessionItemUtils::ToolTipRole(), and ModelView::Utils::toQtVariant().

Referenced by ModelView::PropertyFlatView::PropertyFlatViewImpl::create_label(), ModelView::ViewLabelItem::data(), and ModelView::ViewDataItem::data().

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flags()

Qt::ItemFlags ViewItem::flags ( ) const

virtual

Returns Qt's item flags.

Converts internal SessionItem's status enable/disabled/readonly to what Qt expects.

Reimplemented in ModelView::ViewDataItem.

Definition at line 231 of file viewitem.cpp.

{
    Qt::ItemFlags result = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
    return result;
}

Referenced by ModelView::ViewDataItem::flags(), and TEST_F().

insertRow()

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

Insert a row of items at index 'row'.

Definition at line 137 of file viewitem.cpp.

{
    for (auto& x : items)
        x->setParent(this);
    p_impl->insertRow(row, std::move(items));
}

References p_impl, and row().

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item()

SessionItem * ViewItem::item

(

)

const

Definition at line 168 of file viewitem.cpp.

{
    return p_impl->item;
}

References p_impl.

Referenced by ModelView::PropertyFlatView::PropertyFlatViewImpl::create_label(), ModelView::ViewLabelItem::data(), ModelView::ViewDataItem::data(), ModelView::ViewModelController::ViewModelControllerImpl::findViews(), ModelView::ViewDataItem::flags(), ModelView::ViewModel::sessionItemFromIndex(), and TEST_F().

item_role()

int ViewItem::item_role

(

)

const

Definition at line 173 of file viewitem.cpp.

{
    return p_impl->role;
}

References p_impl.

Referenced by TEST_F().

parent()

ViewItem * ViewItem::parent

(

)

const

Definition at line 158 of file viewitem.cpp.

{
    return p_impl->parent();
}

References p_impl.

Referenced by column(), ModelView::ViewModelBase::indexFromItem(), ModelView::ViewModelController::ViewModelControllerImpl::remove_row_of_views(), row(), and setParent().

removeRow()

void ViewItem::removeRow

(

int

row

)

Removes row of items at given 'row'. Items will be deleted.

Definition at line 146 of file viewitem.cpp.

{
    p_impl->removeRow(row);
}

References p_impl, and row().

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row()

int ViewItem::row

(

)

const

Returns the row where the item is located in its parent's child table, or -1 if the item has no parent.

Definition at line 181 of file viewitem.cpp.

{
    auto index = parent() ? parent()->p_impl->index_of_child(this) : -1;
    return index >= 0 ? index / parent()->p_impl->columns : -1;
}

References p_impl, and parent().

Referenced by ModelView::ViewItem::ViewItemImpl::child(), child(), ModelView::ViewModelBase::indexFromItem(), ModelView::ViewItem::ViewItemImpl::insertRow(), insertRow(), ModelView::ViewModelController::ViewModelControllerImpl::remove_row_of_views(), ModelView::ViewItem::ViewItemImpl::removeRow(), and removeRow().

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rowCount()

int ViewItem::rowCount

(

)

const

Returns the number of child item rows that the item has.

Definition at line 113 of file viewitem.cpp.

{
    return p_impl->rows;
}

References p_impl.

Referenced by ModelView::ViewModelBase::rowCount().

setData()

bool ViewItem::setData ( const QVariant &  value, int  qt_role  )

virtual

Sets the data to underlying SessionItem.

Converts data and roles from Qt definitions to what SessionItem expects.

Definition at line 221 of file viewitem.cpp.

{
    if (p_impl->item && qt_role == Qt::EditRole)
        return p_impl->item->setData(Utils::toCustomVariant(value), p_impl->role);
    return false;
}

References p_impl, and ModelView::Utils::toCustomVariant().

Referenced by TEST_F().

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setParent()

void ViewItem::setParent ( ViewItem *  parent )

protected

Definition at line 242 of file viewitem.cpp.

{
    p_impl->parent_view_item = parent;
}

References p_impl, and parent().

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Member Data Documentation

p_impl

std::unique_ptr<ViewItemImpl> ModelView::ViewItem::p_impl

private

Definition at line 71 of file viewitem.h.

Referenced by appendRow(), child(), children(), clear(), column(), columnCount(), data(), insertRow(), item(), item_role(), parent(), removeRow(), row(), rowCount(), setData(), and setParent().

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

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