ViewSolutions::BaseHashModel< KEY, DATA > Class Template Reference

The BaseHashModel class is the base class of all GUI hash models. More...

#include <basehashmodel.h>

Inheritance diagram for ViewSolutions::BaseHashModel< KEY, DATA >:

Collaboration diagram for ViewSolutions::BaseHashModel< KEY, DATA >:

Public Member Functions
	BaseHashModel (QObject *parent=nullptr)
int	rowCount (const QModelIndex &parent) const override
QHash< int, QByteArray >	roleNames () const override
QVariant	data (const QModelIndex &index, int role) const override
virtual QVariant	getByKey (const KEY &key)
	getByKey returns value by key
const QHash< KEY, DATA > &	dateList () const
virtual void	setByKey (const KEY &key, const DATA &data)
	setByKey update delegate by key
virtual void	removeByKey (const KEY &key)
void	setDataList (const QHash< KEY, DATA > &newData)
	setDataList sets new date of model, and reset all model;

Detailed Description

template<class KEY, class DATA>
class ViewSolutions::BaseHashModel< KEY, DATA >

The BaseHashModel class is the base class of all GUI hash models.

A BaseHashModel stores its items in a hash table and exposes them to QML as a list model. Every item can be accessed by a unique key.

Template Parameters

KEY	- is type of hash table key,
DATA	- is main stored delegate model of all list items.

Concepts and usage rules:

• All models should provide delegate models based on QObject
• If the model requires a fast solution, just implement a BaseListModel<T> model instead

Note

To access the delegate model use the Qt::EditRole role: it is available in QML by the delegateModel keyword.

The BaseHashModel does not support the QML space directly, for short access in QML use the BaseListModel instead.

Example of a model based on the BaseHashModel:

class IntStringModel: public ViewSolutions::BaseHashModel<int, QString>
{
    Q_OBJECT
 
public:
    IntStringModel(QObject* parent = nullptr):
        ViewSolutions::BaseHashModel<int, QString>(parent) {}
};

C++ usage:

IntStringModel model;
model.setByKey(1, "first");
model.setByKey(2, "second");
 
QString value = model.getByKey(1).toString(); // "first"
model.removeByKey(1);

Definition at line 58 of file basehashmodel.h.

Constructor & Destructor Documentation

BaseHashModel()

template<class KEY, class DATA>

ViewSolutions::BaseHashModel< KEY, DATA >::BaseHashModel ( QObject * parent = nullptr )

inline

Definition at line 62 of file basehashmodel.h.

Member Function Documentation

data()

template<class KEY, class DATA>

QVariant ViewSolutions::BaseHashModel< KEY, DATA >::data ( const QModelIndex & index, int role ) const

inlineoverride

Definition at line 76 of file basehashmodel.h.

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dateList()

template<class KEY, class DATA>

const QHash< KEY, DATA > & ViewSolutions::BaseHashModel< KEY, DATA >::dateList ( ) const

inline

Definition at line 133 of file basehashmodel.h.

getByKey()

template<class KEY, class DATA>

virtual QVariant ViewSolutions::BaseHashModel< KEY, DATA >::getByKey ( const KEY & key )

inlinevirtual

getByKey returns value by key

Parameters

key

Returns

Definition at line 111 of file basehashmodel.h.

removeByKey()

template<class KEY, class DATA>

virtual void ViewSolutions::BaseHashModel< KEY, DATA >::removeByKey ( const KEY & key )

inlinevirtual

Definition at line 152 of file basehashmodel.h.

roleNames()

template<class KEY, class DATA>

QHash< int, QByteArray > ViewSolutions::BaseHashModel< KEY, DATA >::roleNames ( ) const

inlineoverride

Definition at line 70 of file basehashmodel.h.

rowCount()

template<class KEY, class DATA>

int ViewSolutions::BaseHashModel< KEY, DATA >::rowCount ( const QModelIndex & parent ) const

inlineoverride

Definition at line 66 of file basehashmodel.h.

setByKey()

template<class KEY, class DATA>

virtual void ViewSolutions::BaseHashModel< KEY, DATA >::setByKey ( const KEY & key, const DATA & data )

inlinevirtual

setByKey update delegate by key

Parameters

key
data

Definition at line 142 of file basehashmodel.h.

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setDataList()

template<class KEY, class DATA>

void ViewSolutions::BaseHashModel< KEY, DATA >::setDataList ( const QHash< KEY, DATA > & newData )

inline

setDataList sets new date of model, and reset all model;

Parameters

newData

Definition at line 167 of file basehashmodel.h.

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

• ViewSolutions/src/basehashmodel.h