UniqueValueListModel Class
A list model storing a list of unique values available in a unique value renderer. More...
| Header: | #include <UniqueValueListModel.h> |
| Since: | Esri::ArcGISRuntime 100.0 |
| Inherits: | QAbstractListModel and Esri::ArcGISRuntime::Iterable |
This class was introduced in Esri::ArcGISRuntime 100.0.
Public Types
| enum | UniqueValueRoles { UniqueValueDescriptionRole, UniqueValueLabelRole, UniqueValueValuesRole } |
Public Functions
| virtual | ~UniqueValueListModel() override |
| void | append(Esri::ArcGISRuntime::UniqueValue *uniqueValue) |
| void | clear() |
| bool | contains(Esri::ArcGISRuntime::UniqueValue *uniqueValue) const |
| Esri::ArcGISRuntime::UniqueValue * | first() const |
| int | indexOf(Esri::ArcGISRuntime::UniqueValue *uniqueValue) const |
| void | insert(int index, Esri::ArcGISRuntime::UniqueValue *uniqueValue) |
| bool | isEmpty() const |
| Esri::ArcGISRuntime::UniqueValue * | last() const |
| void | move(int from, int to) |
| void | removeAt(int index) |
| void | removeOne(Esri::ArcGISRuntime::UniqueValue *uniqueValue) |
Reimplemented Public Functions
| virtual Esri::ArcGISRuntime::UniqueValue * | at(int index) const override |
| virtual QVariant | data(const QModelIndex &index, int role = Qt::DisplayRole) const override |
| virtual int | size() const override |
Signals
| void | errorOccurred(Esri::ArcGISRuntime::Error error) |
| void | itemAdded(int index) |
| void | itemRemoved(int index) |
Detailed Description
Modifying this model (adding, removing, or moving) will update the unique values available in the unique value renderer.
This is a subclass of QAbstractListModel.
The model returns data for the following roles:
| Role | Type | Description | UniqueValueRoles |
|---|---|---|---|
| description | QString | The description of the unique value. | UniqueValueDescriptionRole |
| label | QString | The label used to display the unique value. | UniqueValueLabelRole |
| values | QVariantList | The attribute value or list of values that comprise the unique value. | UniqueValueValuesRole |
See also UniqueValueRenderer and UniqueValue.
Member Type Documentation
enum UniqueValueListModel::UniqueValueRoles
This enum specifies the custom roles which can be used with UniqueValueListModel::data.
| Constant | Value | Description |
|---|---|---|
Esri::ArcGISRuntime::UniqueValueListModel::UniqueValueDescriptionRole | Qt::UserRole + 1 | The description of the unique value. |
Esri::ArcGISRuntime::UniqueValueListModel::UniqueValueLabelRole | Qt::UserRole + 2 | The label used to display the unique value. |
Esri::ArcGISRuntime::UniqueValueListModel::UniqueValueValuesRole | Qt::UserRole + 3 | The attribute value or list of values that comprise the unique value. |
Member Function Documentation
[signal] void UniqueValueListModel::errorOccurred (Esri::ArcGISRuntime::Error error)
Signal emitted when an error occurs.
- error - Details about the error.
[signal] void UniqueValueListModel::itemAdded (int index)
Signal emitted when an item is added to the model.
index is the index of the added item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[signal] void UniqueValueListModel::itemRemoved (int index)
Signal emitted when an item is removed from the model.
index is the index of the removed item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[override virtual] UniqueValueListModel::~UniqueValueListModel ()
Destructor.
void UniqueValueListModel::append(Esri::ArcGISRuntime::UniqueValue *uniqueValue )
Appends the uniqueValue to the unique value list model.
[override virtual] Esri::ArcGISRuntime::UniqueValue *UniqueValueListModel::at(int index) const
Returns the unique value at the specified index.
void UniqueValueListModel::clear()
Removes all unique values from the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
bool UniqueValueListModel::contains(Esri::ArcGISRuntime::UniqueValue *uniqueValue ) const
Returns true if the provided uniqueValue is in the list model.
[override virtual] QVariant UniqueValueListModel::data(const QModelIndex &index, int role = Qt::DisplayRole) const
Reimplements: QAbstractItemModel::data(const QModelIndex &index, int role) const.
Returns the data stored under the given role for the unique value referred to by the index.
- index. The index in the model for which to return data.
- role. The role for which to return data.
Esri::ArcGISRuntime::UniqueValue *UniqueValueListModel::first() const
Returns the first unique value in the list model.
int UniqueValueListModel::indexOf (Esri::ArcGISRuntime::UniqueValue *uniqueValue ) const
Returns the index of the provided uniqueValue in the list model.
void UniqueValueListModel::insert(int index, Esri::ArcGISRuntime::UniqueValue *uniqueValue )
Inserts a uniqueValue at a specified index in the list model.
bool UniqueValueListModel::isEmpty () const
Returns true if this list model is empty.
Esri::ArcGISRuntime::UniqueValue *UniqueValueListModel::last() const
Returns the last unique value in the list model.
void UniqueValueListModel::move(int from, int to)
Moves one unique value from an index in the list model to a different index.
void UniqueValueListModel::removeAt (int index)
Removes a unique value at the specified index in the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
void UniqueValueListModel::removeOne (Esri::ArcGISRuntime::UniqueValue *uniqueValue )
Removes the specified uniqueValue from the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
[override virtual] int UniqueValueListModel::size() const
Returns the number of unique values in the model.