class QAbstractItemModelReplica#

The QAbstractItemModelReplica class serves as a convenience class for Replicas of Sources based on QAbstractItemModel. More…

Synopsis#

Methods#

def availableRoles()
def hasData()
def isInitialized()
def rootCacheSize()
def selectionModel()
def setRootCacheSize()

Signals#

def initialized()

Note

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Detailed Description#

QAbstractItemModelReplica makes replicating QAbstractItemModels more efficient by employing caching and pre-fetching.

See also

QAbstractItemModel

availableRoles()#

Return type:: .list of int

Returns a list of available roles.

See also

QAbstractItemModel

hasData(index, role)#

Parameters:

index – QModelIndex
role – int

Return type:

bool

Returns true if there exists role data for the item at index. Returns false in any other case.

initialized()#

The initialized signal is emitted the first time we receive data from the Source .

See also

isInitialized()

isInitialized()#

Return type:: bool

Returns true if this replica has been initialized with data from the Source object. Returns false otherwise.

See also

initialized()

rootCacheSize()#

Return type:: int

Returns the current size of the internal cache. By default this is set to the value of the QTRO_NODES_CACHE_SIZE environment variable, or a default of 1000 if it is invalid or doesn’t exist.

See also

setRootCacheSize()

selectionModel()#

Return type:: QItemSelectionModel

Returns a pointer to the QItemSelectionModel for the current QAbstractItemModelReplica .

setRootCacheSize(rootCacheSize)#

Parameters:: rootCacheSize – int

Sets the size of the internal cache to rootCacheSize.

See also

rootCacheSize()