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BasemapListModel Class

  • BasemapListModel
  • class Esri::ArcGISRuntime::BasemapListModel

    The result of fetching the basemaps available for a portal. More...

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

    This class was introduced in Esri::ArcGISRuntime 100.0.

    Public Types

    enum BasemapRoles { BasemapNameRole, BasemapUrlRole, BasemapItemAccessInformationRole, BasemapItemCreatedRole, BasemapItemDescriptionRole, …, BasemapItemThumbnailUrlRole }

    Public Functions

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

    Reimplemented Public Functions

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

    Signals

    void basemapAdded(int index)
    void basemapRemoved(int index)
    void errorOccurred(Esri::ArcGISRuntime::Error error)

    Detailed Description

    The request is made by calling fetchBasemaps and if the operation is succesful, this type is returned by the portal's basemaps method.

    The basemaps contained in the model are initially unloaded.

    The model returns data for the following roles:

    RoleTypeDescriptionBasemapRoles
    namestringThe basemap's name.BasemapNameRole
    urlurlThe basemap's URL.BasemapUrlRole
    accessInformationstringThe item's access information.BasemapItemAccessInformationRole
    createddateThe date this item was created.BasemapItemCreatedRole
    descriptionstringThe item's description.BasemapItemDescriptionRole
    itemIdstringThe item's ID.BasemapItemIdRole
    typePortalItemTypeThe item's type.BasemapItemTypeRole
    modifieddateThe date this item was last modified.BasemapItemModifiedRole
    snippetstringThe item's snippet.BasemapItemSnippetRole
    tagslist<string>The item's tags.BasemapItemTagsRole
    titlestringThe item's title.BasemapItemTitleRole
    thumbnailUrlurlThe local file URL of the thumbnail image for this item.BasemapItemThumbnailUrlRole

    Example: Accessing roles from a BasemapListModel from within a QML delegate:

    Image {
        id: basemapImg
        anchors {
            bottom: basemapLabel.top;
            horizontalCenter: parent.horizontalCenter
        }
        height: parent.height - ( basemapLabel.height * 2 );
        source: thumbnailUrl // use the thumbnailUrl role of the model
        width: height
        fillMode: Image.PreserveAspectCrop
    }
    
    Text {
        id: basemapLabel
        anchors {
            bottom: parent.bottom;
            left: parent.left;
            right: parent.right
        }
        height: 16
        z: 100
        wrapMode: Text.Wrap
        horizontalAlignment: Text.AlignHCenter
        elide: Text.ElideRight
        text: title // use the title role of the model
        font.pointSize: 8
        font.bold: index === basemapsGrid.currentIndex
    }

    See also Portal, Basemap, and Loadable.

    Member Type Documentation

    enum BasemapListModel::BasemapRoles

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

    ConstantValueDescription
    Esri::ArcGISRuntime::BasemapListModel::BasemapNameRoleQt::UserRole + 1The basemap's name.
    Esri::ArcGISRuntime::BasemapListModel::BasemapUrlRoleQt::UserRole + 2The basemap's URL.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemAccessInformationRoleQt::UserRole + 3The item's access information.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemCreatedRoleQt::UserRole + 4The date this item was created.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemDescriptionRoleQt::UserRole + 5The item's description.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemIdRoleQt::UserRole + 6The item's ID.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemTypeRoleQt::UserRole + 7The item's type.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemModifiedRoleQt::UserRole + 8The date this item was last modified.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemSnippetRoleQt::UserRole + 9The item's snippet.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemTagsRoleQt::UserRole + 10The item's tags.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemTitleRoleQt::UserRole + 11The item's title.
    Esri::ArcGISRuntime::BasemapListModel::BasemapItemThumbnailUrlRoleQt::UserRole + 12The local file URL of the thumbnail image for this item.

    Member Function Documentation

    [signal] void BasemapListModel::basemapAdded(int index)

    Signal emitted when a basemap is added to the list model.

    index is the index of the added basemap.

    [signal] void BasemapListModel::basemapRemoved(int index)

    Signal emitted when a basemap is removed from the list model.

    index is the index of the removed basemap.

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

    Signal emitted when an error occurs.

    • error - Details about the error.

    [override virtual] BasemapListModel::~BasemapListModel()

    Destructor.

    void BasemapListModel::append(Esri::ArcGISRuntime::Basemap *basemap)

    Appends a basemap to the basemap list model.

    [override virtual] Esri::ArcGISRuntime::Basemap *BasemapListModel::at(int index) const

    Returns the basemap at the specified index.

    void BasemapListModel::clear()

    Removes all basemaps from the list model.

    bool BasemapListModel::contains(Esri::ArcGISRuntime::Basemap *basemap) const

    Returns true if the list model contains the specified basemap.

    [override virtual] QVariant BasemapListModel::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 basemap 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::Basemap *BasemapListModel::first() const

    Returns the first basemap in the list model.

    int BasemapListModel::indexOf(Esri::ArcGISRuntime::Basemap *basemap) const

    Returns the index of the basemap specified.

    void BasemapListModel::insert(int index, Esri::ArcGISRuntime::Basemap *basemap)

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

    This method will append to the list model if the index is greater than the current size of the list.

    bool BasemapListModel::isEmpty() const

    Returns true if the list model contains no basemaps.

    Esri::ArcGISRuntime::Basemap *BasemapListModel::last() const

    Returns the last basemap in the list model.

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

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

    void BasemapListModel::removeAt(int index)

    Removes a basemap at the specified index.

    void BasemapListModel::removeOne(Esri::ArcGISRuntime::Basemap *basemap)

    Removes the specified basemap from the list model.

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

    Returns the number of basemaps contained in the list model.

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