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ClassBreakListModel Class

class Esri::ArcGISRuntime::ClassBreakListModel

A list model storing a list of class breaks available in a class breaks renderer. More...

Header: #include <ClassBreakListModel>
Since: Esri::ArcGISRuntime 100.0
Inherits: QAbstractListModel and Esri::ArcGISRuntime::Iterable

This class was introduced in Esri::ArcGISRuntime 100.0.

Public Types

enum ClassBreakRoles { ClassBreakDescriptionRole, ClassBreakLabelRole, ClassBreakMaxValueRole, ClassBreakMinValueRole }

Public Functions

virtual ~ClassBreakListModel() override
void append(Esri::ArcGISRuntime::ClassBreak *classBreak)
void clear()
bool contains(Esri::ArcGISRuntime::ClassBreak *classBreak) const
Esri::ArcGISRuntime::ClassBreak *first() const
int indexOf(Esri::ArcGISRuntime::ClassBreak *classBreak) const
void insert(int index, Esri::ArcGISRuntime::ClassBreak *classBreak)
bool isEmpty() const
Esri::ArcGISRuntime::ClassBreak *last() const
void move(int from, int to)
void removeAt(int index)
void removeOne(Esri::ArcGISRuntime::ClassBreak *classBreak)

Reimplemented Public Functions

virtual Esri::ArcGISRuntime::ClassBreak *at(int index) const override
virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
virtual int size() const override


void classBreakAdded(int index)
void classBreakRemoved(int index)
void errorOccurred(Esri::ArcGISRuntime::Error error)

Detailed Description

Modifying this model (adding, removing, or moving) will update the class breaks available in the class breaks renderer.

This is a subclass of QAbstractListModel.

The model returns data for the following roles:

descriptionQStringThe description of the class break.ClassBreakDescriptionRole
labelQStringThe label used to display the class break.ClassBreakLabelRole
maxValuedoubleThe maximum value of the class break.ClassBreakMaxValueRole
minValuedoubleThe minimum value of the class break.ClassBreakMinValueRole

See also ClassBreaksRenderer and ClassBreak.

Member Type Documentation

enum ClassBreakListModel::ClassBreakRoles

This enum specifies the custom roles which can be used with ClassBreakListModel::data.

Esri::ArcGISRuntime::ClassBreakListModel::ClassBreakDescriptionRoleQt::UserRole + 1The description of the class break.
Esri::ArcGISRuntime::ClassBreakListModel::ClassBreakLabelRoleQt::UserRole + 2The label used to display the class break.
Esri::ArcGISRuntime::ClassBreakListModel::ClassBreakMaxValueRoleQt::UserRole + 3The maximum value of the class break.
Esri::ArcGISRuntime::ClassBreakListModel::ClassBreakMinValueRoleQt::UserRole + 4The minimum value of the class break.

Member Function Documentation

[signal] void ClassBreakListModel::classBreakAdded(int index)

Signal emitted when a class break is added to the model.

index is the index of the added class break.

[signal] void ClassBreakListModel::classBreakRemoved(int index)

Signal emitted when a class break is removed from the model.

index is the index of the removed class break.

[signal] void ClassBreakListModel::errorOccurred(Esri::ArcGISRuntime::Error error)

Signal emitted when an error occurs.

  • error - Details about the error.

[override virtual] ClassBreakListModel::~ClassBreakListModel()


void ClassBreakListModel::append(Esri::ArcGISRuntime::ClassBreak *classBreak)

Appends the classBreak to the class break list model.

[override virtual] Esri::ArcGISRuntime::ClassBreak *ClassBreakListModel::at(int index) const

Returns the class break at the specified index.

void ClassBreakListModel::clear()

Removes all class breaks from the list model.

bool ClassBreakListModel::contains(Esri::ArcGISRuntime::ClassBreak *classBreak) const

Returns true if the provided classBreak is in the list model.

[override virtual] QVariant ClassBreakListModel::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 class-break 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::ClassBreak *ClassBreakListModel::first() const

Returns the first class break in the list model.

int ClassBreakListModel::indexOf(Esri::ArcGISRuntime::ClassBreak *classBreak) const

Returns the index of the provided classBreak in the list model.

void ClassBreakListModel::insert(int index, Esri::ArcGISRuntime::ClassBreak *classBreak)

Inserts a classBreak at a specified index in the list model.

bool ClassBreakListModel::isEmpty() const

Returns true if this list model is empty.

Esri::ArcGISRuntime::ClassBreak *ClassBreakListModel::last() const

Returns the last class break in the list model.

void ClassBreakListModel::move(int from, int to)

Moves one class break from an index in the list model to a different index.

void ClassBreakListModel::removeAt(int index)

Removes a class break at the specified index in the list model.

void ClassBreakListModel::removeOne(Esri::ArcGISRuntime::ClassBreak *classBreak)

Removes the specified classBreak from the list model.

[override virtual] int ClassBreakListModel::size() const

Returns the number of class breaks in the model.

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