SymbolListModel Class
A list model storing a list of symbols. More...
| Header: | #include <SymbolListModel.h> |
| Since: | Esri::ArcGISRuntime 100.0 |
| Inherits: | QAbstractListModel and Esri::ArcGISRuntime::Iterable |
This class was introduced in Esri::ArcGISRuntime 100.0.
Public Types
| enum | SymbolRoles { SymbolUrlRole } |
Public Functions
| virtual | ~SymbolListModel() override |
| void | append(Esri::ArcGISRuntime::Symbol *symbol) |
| void | clear() |
| bool | contains(Esri::ArcGISRuntime::Symbol *symbol) const |
| Esri::ArcGISRuntime::Symbol * | first() const |
| int | indexOf(Esri::ArcGISRuntime::Symbol *symbol) const |
| void | insert(int index, Esri::ArcGISRuntime::Symbol *symbol) |
| bool | isEmpty() const |
| Esri::ArcGISRuntime::Symbol * | last() const |
| void | move(int from, int to) |
| void | removeAt(int index) |
| void | removeOne(Esri::ArcGISRuntime::Symbol *symbol) |
Reimplemented Public Functions
| virtual Esri::ArcGISRuntime::Symbol * | 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, moving) will update the symbols belonging to the model's parent type (i.e. CompositeSymbol).
The model returns data for the following roles:
| Role | Type | Description | SublayerRoles |
|---|---|---|---|
| symbolUrl | QUrl | A file URL to the symbol's swatch image. | SymbolUrlRole |
Member Type Documentation
enum SymbolListModel::SymbolRoles
This enum specifies the custom roles which can be used with SymbolListModel::data.
| Constant | Value | Description |
|---|---|---|
Esri::ArcGISRuntime::SymbolListModel::SymbolUrlRole | Qt::UserRole + 1 | A file URL to the symbol's swatch image. |
Member Function Documentation
[signal] void SymbolListModel::errorOccurred (Esri::ArcGISRuntime::Error error)
Signal emitted when an error occurs.
- error - Details about the error.
[signal] void SymbolListModel::itemAdded (int index)
Signal emitted when an item is added to the list model.
index is the index of the added item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[signal] void SymbolListModel::itemRemoved (int index)
Signal emitted when an item is removed from the list model.
index is the index of the removed item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[override virtual] SymbolListModel::~SymbolListModel ()
Destructor.
void SymbolListModel::append(Esri::ArcGISRuntime::Symbol *symbol)
Appends a symbol to the symbol list model.
[override virtual] Esri::ArcGISRuntime::Symbol *SymbolListModel::at(int index) const
Returns the Symbol at the specified index.
void SymbolListModel::clear()
Removes all symbols 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 SymbolListModel::contains(Esri::ArcGISRuntime::Symbol *symbol) const
Returns true if the list model contains the specified symbol.
[override virtual] QVariant SymbolListModel::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 symbol 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::Symbol *SymbolListModel::first() const
Returns the first symbol in the list model.
int SymbolListModel::indexOf (Esri::ArcGISRuntime::Symbol *symbol) const
Returns the index of the symbol specified.
void SymbolListModel::insert(int index, Esri::ArcGISRuntime::Symbol *symbol)
Inserts a symbol at a specified index in the list model.
This method will append to the list if the index is greater than the current size of the list model.
bool SymbolListModel::isEmpty () const
Returns true if the list model contains no symbols.
Esri::ArcGISRuntime::Symbol *SymbolListModel::last() const
Returns the last symbol in the list model.
void SymbolListModel::move(int from, int to)
Moves one symbol from an index in the list model to a different index.
void SymbolListModel::removeAt (int index)
Removes a symbol at the specified index.
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 SymbolListModel::removeOne (Esri::ArcGISRuntime::Symbol *symbol)
Removes the specified symbol 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 SymbolListModel::size() const
Returns the number of symbols contained in the list model.