ModelView::ViewModelDelegate Class Reference

Model delegate to provide editing/painting for custom variants. More...

Inheritance diagram for ModelView::ViewModelDelegate:

Collaboration diagram for ModelView::ViewModelDelegate:

Public Slots
void	onCustomEditorDataChanged ()

Public Member Functions
	ViewModelDelegate (QObject *parent=nullptr)
	~ViewModelDelegate () override
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
void	setCellDecoration (std::unique_ptr< CellDecoratorInterface > cell_decoration)
void	setEditorData (QWidget *editor, const QModelIndex &index) const override
void	setEditorFactory (std::unique_ptr< EditorFactoryInterface > editor_factory)
void	setModelData (QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override
QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Increases height of the row by 20% wrt the default. More...
void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Makes an editor occupying whole available space in a cell. More...

Protected Member Functions
void	initStyleOption (QStyleOptionViewItem *option, const QModelIndex &index) const override

Protected Attributes
std::unique_ptr< CellDecoratorInterface >	m_cell_decoration
std::unique_ptr< EditorFactoryInterface >	m_editor_factory

Detailed Description

Model delegate to provide editing/painting for custom variants.

Definition at line 29 of file viewmodeldelegate.h.

Constructor & Destructor Documentation

ViewModelDelegate()

ViewModelDelegate::ViewModelDelegate ( QObject *  parent = nullptr )

explicit

Definition at line 28 of file viewmodeldelegate.cpp.

    : QStyledItemDelegate(parent)
    , m_editor_factory(std::make_unique<DefaultEditorFactory>())
    , m_cell_decoration(std::make_unique<DefaultCellDecorator>())
{
}

~ViewModelDelegate()

ViewModelDelegate::~ViewModelDelegate ( )

overridedefault

Member Function Documentation

createEditor()

QWidget * ViewModelDelegate::createEditor ( QWidget *  parent, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Definition at line 47 of file viewmodeldelegate.cpp.

{
    if (auto editor = m_editor_factory->createEditor(index)) {
        editor->setParent(parent);
        connect(editor.get(), &CustomEditor::dataChanged, this,
                &ViewModelDelegate::onCustomEditorDataChanged);
        return editor.release();
    }
    return QStyledItemDelegate::createEditor(parent, option, index);
}

References ModelView::CustomEditor::dataChanged(), m_editor_factory, and onCustomEditorDataChanged().

Referenced by ViewModelDelegateTest::TestData::create_editor().

Here is the call graph for this function:

initStyleOption()

void ViewModelDelegate::initStyleOption ( QStyleOptionViewItem *  option, const QModelIndex &  index  ) const

overrideprotected

Definition at line 112 of file viewmodeldelegate.cpp.

{
    QStyledItemDelegate::initStyleOption(option, index);
 
    if (m_cell_decoration && m_cell_decoration->hasCustomDecoration(index))
        m_cell_decoration->initStyleOption(option, index);
}

References m_cell_decoration.

onCustomEditorDataChanged

void ViewModelDelegate::onCustomEditorDataChanged ( )

slot

Definition at line 104 of file viewmodeldelegate.cpp.

{
    auto editor = qobject_cast<CustomEditor*>(sender());
    emit commitData(editor);
    if (!editor->is_persistent())
        emit closeEditor(editor);
}

Referenced by ModelView::PropertyFlatView::PropertyFlatViewImpl::create_editor(), and createEditor().

setCellDecoration()

void ViewModelDelegate::setCellDecoration

(

std::unique_ptr< CellDecoratorInterface >

cell_decoration

)

Definition at line 42 of file viewmodeldelegate.cpp.

{
    m_cell_decoration = std::move(cell_decoration);
}

References m_cell_decoration.

setEditorData()

void ViewModelDelegate::setEditorData ( QWidget *  editor, const QModelIndex &  index  ) const

override

Definition at line 59 of file viewmodeldelegate.cpp.

{
    if (!index.isValid())
        return;
 
    if (auto customEditor = dynamic_cast<CustomEditor*>(editor))
        customEditor->setData(index.data());
    else
        QStyledItemDelegate::setEditorData(editor, index);
}

setEditorFactory()

void ViewModelDelegate::setEditorFactory

(

std::unique_ptr< EditorFactoryInterface >

editor_factory

)

Definition at line 37 of file viewmodeldelegate.cpp.

{
    m_editor_factory = std::move(editor_factory);
}

References m_editor_factory.

setModelData()

void ViewModelDelegate::setModelData ( QWidget *  editor, QAbstractItemModel *  model, const QModelIndex &  index  ) const

override

Definition at line 70 of file viewmodeldelegate.cpp.

{
    if (!index.isValid())
        return;
 
    if (auto customEditor = dynamic_cast<CustomEditor*>(editor)) {
        model->setData(index, customEditor->data());
    } else {
        QStyledItemDelegate::setModelData(editor, model, index);
    }
}

sizeHint()

QSize ViewModelDelegate::sizeHint ( const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Increases height of the row by 20% wrt the default.

Definition at line 85 of file viewmodeldelegate.cpp.

{
    QSize result = QStyledItemDelegate::sizeHint(option, index);
    result.setHeight(static_cast<int>(result.height() * scale_default_height_factor));
    return result;
}

updateEditorGeometry()

void ViewModelDelegate::updateEditorGeometry ( QWidget *  editor, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Makes an editor occupying whole available space in a cell.

If cell contains an icon as a decoration (i.e. icon of material property), it will be hidden as soon as editor up and running.

Definition at line 97 of file viewmodeldelegate.cpp.

{
    QStyledItemDelegate::updateEditorGeometry(editor, option, index);
    editor->setGeometry(option.rect);
}

Member Data Documentation

m_cell_decoration

std::unique_ptr<CellDecoratorInterface> ModelView::ViewModelDelegate::m_cell_decoration

protected

Definition at line 58 of file viewmodeldelegate.h.

Referenced by initStyleOption(), and setCellDecoration().

m_editor_factory

std::unique_ptr<EditorFactoryInterface> ModelView::ViewModelDelegate::m_editor_factory

protected

Definition at line 57 of file viewmodeldelegate.h.

Referenced by createEditor(), and setEditorFactory().

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

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