ComponentProxyModel Class Reference

Proxy model to adjust SessionModel for component editor (right bottom corner of SampleView and similar). More...

Inheritance diagram for ComponentProxyModel:

Collaboration diagram for ComponentProxyModel:

Public Member Functions
	ComponentProxyModel (QObject *parent=nullptr)
int	columnCount (const QModelIndex &parent={}) const
bool	hasChildren (const QModelIndex &parent) const
QModelIndex	index (int row, int column, const QModelIndex &parent={}) const
QModelIndex	mapFromSource (const QModelIndex &sourceIndex) const
QModelIndex	mapToSource (const QModelIndex &proxyIndex) const
QModelIndex	parent (const QModelIndex &child) const
int	rowCount (const QModelIndex &parent={}) const
void	setProxyStrategy (ProxyModelStrategy *strategy)
void	setRootIndex (const QModelIndex &sourceRootIndex)
void	setSessionModel (SessionModel *model)

Private Slots
void	sourceDataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector< int > &roles={})
void	sourceRowsInserted (const QModelIndex &parent, int start, int end)
void	sourceRowsRemoved (const QModelIndex &parent, int start, int end)

Private Member Functions
void	buildModelMap ()
	Main method to build the map of persistent indeses. More...
void	updateModelMap ()

Private Attributes
SessionModel *	m_model
std::unique_ptr< ProxyModelStrategy >	m_proxyStrategy

Friends
class	ProxyModelStrategy

Detailed Description

Proxy model to adjust SessionModel for component editor (right bottom corner of SampleView and similar).

The model hides all SessionItems which are not PropertyItems. The model hides GroupPropertyItem children and shows grand-children of currently selected item one level up.

Definition at line 33 of file ComponentProxyModel.h.

Constructor & Destructor Documentation

ComponentProxyModel()

ComponentProxyModel::ComponentProxyModel

(

QObject *

parent = nullptr

)

Definition at line 22 of file ComponentProxyModel.cpp.

    : QAbstractProxyModel(parent)
    , m_model(nullptr)
    //    , m_proxyStrategy(new IndentityProxyStrategy)
    , m_proxyStrategy(new ComponentProxyStrategy)
{
}

Member Function Documentation

buildModelMap()

void ComponentProxyModel::buildModelMap ( )

private

Main method to build the map of persistent indeses.

Definition at line 178 of file ComponentProxyModel.cpp.

{
    if (!m_model)
        return;
    m_proxyStrategy->buildModelMap(m_model, this);
    layoutChanged();
}

References m_model, and m_proxyStrategy.

Referenced by setProxyStrategy(), setRootIndex(), setSessionModel(), sourceRowsInserted(), and sourceRowsRemoved().

columnCount()

int ComponentProxyModel::columnCount

(

const QModelIndex &

parent = {}

)

const

Definition at line 130 of file ComponentProxyModel.cpp.

{
    if (parent.isValid() && parent.column() != 0)
        return 0;
    return SessionFlags::MAX_COLUMNS;
}

References SessionFlags::MAX_COLUMNS, and parent().

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hasChildren()

bool ComponentProxyModel::hasChildren

(

const QModelIndex &

parent

)

const

Definition at line 137 of file ComponentProxyModel.cpp.

{
    QModelIndex source_parent = mapToSource(parent);
    if (parent.isValid() && !source_parent.isValid())
        return false;
 
    return rowCount(parent) != 0;
}

References mapToSource(), parent(), and rowCount().

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index()

QModelIndex ComponentProxyModel::index	(	int	row,
		int	column,
		const QModelIndex &	parent = {}
	)		const

Definition at line 88 of file ComponentProxyModel.cpp.

{
    QModelIndex sourceParent;
    if (parent.isValid())
        sourceParent = mapToSource(parent);
 
    QMapIterator<QPersistentModelIndex, QPersistentModelIndex> it(
        m_proxyStrategy->proxySourceParent());
    while (it.hasNext()) {
        it.next();
        if (it.value() == sourceParent && it.key().row() == row && it.key().column() == column)
            return it.key();
    }
    return QModelIndex();
}

References m_proxyStrategy, mapToSource(), and parent().

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mapFromSource()

QModelIndex ComponentProxyModel::mapFromSource

(

const QModelIndex &

sourceIndex

)

const

Definition at line 80 of file ComponentProxyModel.cpp.

{
    if (!sourceIndex.isValid())
        return QModelIndex();
 
    return m_proxyStrategy->sourceToProxy().value(sourceIndex);
}

References m_proxyStrategy.

Referenced by parent(), ComponentTreeView::setRootIndex(), and sourceDataChanged().

mapToSource()

QModelIndex ComponentProxyModel::mapToSource

(

const QModelIndex &

proxyIndex

)

const

Definition at line 72 of file ComponentProxyModel.cpp.

{
    if (!proxyIndex.isValid())
        return QModelIndex();
 
    return m_proxyStrategy->sourceToProxy().key(proxyIndex);
}

References m_proxyStrategy.

Referenced by hasChildren(), index(), ComponentTreeView::onCustomContextMenuRequested(), and rowCount().

parent()

QModelIndex ComponentProxyModel::parent

(

const QModelIndex &

child

)

const

Definition at line 104 of file ComponentProxyModel.cpp.

{
    QModelIndex sourceParent = m_proxyStrategy->proxySourceParent().value(child);
    if (sourceParent.isValid())
        return mapFromSource(sourceParent);
 
    return QModelIndex();
}

References m_proxyStrategy, and mapFromSource().

Referenced by columnCount(), hasChildren(), index(), rowCount(), sourceRowsInserted(), and sourceRowsRemoved().

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rowCount()

int ComponentProxyModel::rowCount

(

const QModelIndex &

parent = {}

)

const

Definition at line 113 of file ComponentProxyModel.cpp.

{
    QModelIndex sourceParent;
    if (parent.isValid())
        sourceParent = mapToSource(parent);
    QMapIterator<QPersistentModelIndex, QPersistentModelIndex> it(
        m_proxyStrategy->proxySourceParent());
 
    QSet<int> rows;
    while (it.hasNext()) {
        it.next();
        if (it.value() == sourceParent)
            rows.insert(it.key().row());
    }
    return rows.size();
}

References m_proxyStrategy, mapToSource(), and parent().

Referenced by hasChildren().

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setProxyStrategy()

void ComponentProxyModel::setProxyStrategy

(

ProxyModelStrategy *

strategy

)

Definition at line 66 of file ComponentProxyModel.cpp.

{
    m_proxyStrategy.reset(strategy);
    buildModelMap();
}

References buildModelMap(), and m_proxyStrategy.

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setRootIndex()

void ComponentProxyModel::setRootIndex

(

const QModelIndex &

sourceRootIndex

)

Definition at line 60 of file ComponentProxyModel.cpp.

{
    m_proxyStrategy->setRootIndex(sourceRootIndex);
    buildModelMap();
}

References buildModelMap(), and m_proxyStrategy.

Referenced by ComponentTreeView::setRootIndex().

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setSessionModel()

void ComponentProxyModel::setSessionModel

(

SessionModel *

model

)

Definition at line 30 of file ComponentProxyModel.cpp.

{
    beginResetModel();
 
    if (sourceModel()) {
        disconnect(sourceModel(), &QAbstractItemModel::dataChanged, this,
                   &ComponentProxyModel::sourceDataChanged);
        disconnect(sourceModel(), &QAbstractItemModel::rowsInserted, this,
                   &ComponentProxyModel::sourceRowsInserted);
        disconnect(sourceModel(), &QAbstractItemModel::rowsRemoved, this,
                   &ComponentProxyModel::sourceRowsRemoved);
    }
 
    QAbstractProxyModel::setSourceModel(model);
 
    if (sourceModel()) {
        connect(sourceModel(), &QAbstractItemModel::dataChanged, this,
                &ComponentProxyModel::sourceDataChanged);
        connect(sourceModel(), &QAbstractItemModel::rowsInserted, this,
                &ComponentProxyModel::sourceRowsInserted);
        connect(sourceModel(), &QAbstractItemModel::rowsRemoved, this,
                &ComponentProxyModel::sourceRowsRemoved);
    }
 
    endResetModel();
 
    m_model = model;
    buildModelMap();
}

References buildModelMap(), m_model, sourceDataChanged(), sourceRowsInserted(), and sourceRowsRemoved().

Referenced by ComponentTreeView::setModel().

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sourceDataChanged

void ComponentProxyModel::sourceDataChanged ( const QModelIndex &  topLeft, const QModelIndex &  bottomRight, const QVector< int > &  roles = {}  )

privateslot

Definition at line 146 of file ComponentProxyModel.cpp.

{
    ASSERT(topLeft.isValid() ? topLeft.model() == sourceModel() : true);
    ASSERT(bottomRight.isValid() ? bottomRight.model() == sourceModel() : true);
 
    if (SessionItem* item = m_model->itemForIndex(topLeft)) {
        if (item->modelType() == "GroupProperty")
            updateModelMap();
    }
    dataChanged(mapFromSource(topLeft), mapFromSource(bottomRight), roles);
}

References ASSERT, SessionModel::itemForIndex(), m_model, mapFromSource(), and updateModelMap().

Referenced by setSessionModel().

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sourceRowsInserted

void ComponentProxyModel::sourceRowsInserted ( const QModelIndex &  parent, int  start, int  end  )

privateslot

Definition at line 160 of file ComponentProxyModel.cpp.

{
    Q_UNUSED(parent);
    Q_UNUSED(start);
    Q_UNUSED(end);
    buildModelMap();
}

References buildModelMap(), and parent().

Referenced by setSessionModel().

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sourceRowsRemoved

void ComponentProxyModel::sourceRowsRemoved ( const QModelIndex &  parent, int  start, int  end  )

privateslot

Definition at line 168 of file ComponentProxyModel.cpp.

{
    Q_UNUSED(parent);
    Q_UNUSED(start);
    Q_UNUSED(end);
    buildModelMap();
}

References buildModelMap(), and parent().

Referenced by setSessionModel().

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updateModelMap()

void ComponentProxyModel::updateModelMap ( )

private

Definition at line 186 of file ComponentProxyModel.cpp.

{
    m_proxyStrategy->onDataChanged(m_model, this);
}

References m_model, and m_proxyStrategy.

Referenced by sourceDataChanged().

Friends And Related Function Documentation

ProxyModelStrategy

friend class ProxyModelStrategy

friend

Definition at line 36 of file ComponentProxyModel.h.

Member Data Documentation

m_model

SessionModel* ComponentProxyModel::m_model

private

Definition at line 67 of file ComponentProxyModel.h.

Referenced by buildModelMap(), setSessionModel(), sourceDataChanged(), and updateModelMap().

m_proxyStrategy

std::unique_ptr<ProxyModelStrategy> ComponentProxyModel::m_proxyStrategy

private

Definition at line 68 of file ComponentProxyModel.h.

Referenced by buildModelMap(), index(), mapFromSource(), mapToSource(), parent(), rowCount(), setProxyStrategy(), setRootIndex(), and updateModelMap().

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

• /home/www/ba/GUI/coregui/Models/ComponentProxyModel.h
• /home/www/ba/GUI/coregui/Models/ComponentProxyModel.cpp