ModelView::SessionItemData Class Reference

Handles data roles for SessionItem. More...

Public Types
using	const_iterator = container_type::const_iterator
using	container_type = std::vector< DataRole >

Public Member Functions
const_iterator	begin () const
Variant	data (int role) const
const_iterator	end () const
bool	hasData (int role) const
	Returns true if item has data with given role. More...
std::vector< int >	roles () const
bool	setData (const Variant &value, int role)
	Sets the data for given role. More...

Private Member Functions
void	assure_validity (const Variant &variant, int role)
	Check if variant is compatible. More...

Private Attributes
container_type	m_values

Detailed Description

Handles data roles for SessionItem.

Definition at line 26 of file sessionitemdata.h.

Member Typedef Documentation

const_iterator

using ModelView::SessionItemData::const_iterator = container_type::const_iterator

Definition at line 29 of file sessionitemdata.h.

container_type

using ModelView::SessionItemData::container_type = std::vector<DataRole>

Definition at line 28 of file sessionitemdata.h.

Member Function Documentation

assure_validity()

void SessionItemData::assure_validity ( const Variant &  variant, int  role  )

private

Check if variant is compatible.

Definition at line 83 of file sessionitemdata.cpp.

{
    if (variant.typeName() == QStringLiteral("QString"))
        throw std::runtime_error("Attempt to set QString based variant");
 
    if (!Utils::CompatibleVariantTypes(data(role), variant)) {
        std::ostringstream ostr;
        ostr << "SessionItemData::assure_validity() -> Error. Variant types mismatch. "
             << "Old variant type '" << data(role).typeName() << "' "
             << "new variant type '" << variant.typeName() << "\n";
        throw std::runtime_error(ostr.str());
    }
}

References ModelView::Utils::CompatibleVariantTypes(), data(), and QStringLiteral.

Referenced by setData().

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begin()

SessionItemData::const_iterator SessionItemData::begin

(

)

const

Definition at line 63 of file sessionitemdata.cpp.

{
    return m_values.begin();
}

References m_values.

data()

Variant SessionItemData::data

(

int

role

)

const

Definition at line 31 of file sessionitemdata.cpp.

{
    for (const auto& value : m_values) {
        if (value.m_role == role)
            return value.m_data;
    }
    return Variant();
}

References m_values.

Referenced by assure_validity(), and TEST_F().

end()

SessionItemData::const_iterator SessionItemData::end

(

)

const

Definition at line 68 of file sessionitemdata.cpp.

{
    return m_values.end();
}

References m_values.

hasData()

bool SessionItemData::hasData

(

int

role

)

const

Returns true if item has data with given role.

Definition at line 75 of file sessionitemdata.cpp.

{
    auto has_role = [role](const auto& x) { return x.m_role == role; };
    return std::find_if(m_values.begin(), m_values.end(), has_role) != m_values.end();
}

References m_values.

Referenced by TEST_F().

roles()

std::vector< int > SessionItemData::roles

(

)

const

Definition at line 23 of file sessionitemdata.cpp.

{
    std::vector<int> result;
    for (const auto& value : m_values)
        result.push_back(value.m_role);
    return result;
}

References m_values.

Referenced by ModelView::JsonItemDataConverter::from_json(), and TEST_F().

setData()

bool SessionItemData::setData	(	const Variant &	value,
		int	role
	)

Sets the data for given role.

Returns true if data was changed. If variant is invalid, corresponding role will be removed.

Definition at line 43 of file sessionitemdata.cpp.

{
    assure_validity(value, role);
 
    for (auto it = m_values.begin(); it != m_values.end(); ++it) {
        if (it->m_role == role) {
            if (value.isValid()) {
                if (Utils::IsTheSame(it->m_data, value))
                    return false;
                it->m_data = value;
            } else {
                m_values.erase(it);
            }
            return true;
        }
    }
    m_values.push_back(DataRole(value, role));
    return true;
}

References assure_validity(), ModelView::Utils::IsTheSame(), and m_values.

Referenced by ModelView::JsonItemDataConverter::from_json(), and TEST_F().

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Member Data Documentation

m_values

container_type ModelView::SessionItemData::m_values

private

Definition at line 44 of file sessionitemdata.h.

Referenced by begin(), data(), end(), hasData(), roles(), and setData().

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

• /home/www/ba/mvvm/model/mvvm/model/sessionitemdata.h
• /home/www/ba/mvvm/model/mvvm/model/sessionitemdata.cpp