QItemSelection¶

The QItemSelection class manages information about selected items in a model. More…

Synopsis¶

Functions¶

def __add__ (arg__1)
def __eq__ (arg__1)
def __iadd__ (l)
def __lshift__ (l)
def __ne__ (arg__1)
def append (arg__1)
def append (l)
def at (i)
def back ()
def capacity ()
def clear ()
def constData ()
def constFirst ()
def constLast ()
def contains (index)
def count ()
def data ()
def empty ()
def first ()
def first (n)
def front ()
def indexes ()
def insert (arg__1, arg__2)
def isEmpty ()
def isSharedWith (other)
def last ()
def last (n)
def length ()
def merge (other, command)
def mid (pos[, len=-1])
def move (from, to)
def operator[] (i)
def pop_back ()
def pop_front ()
def prepend (arg__1)
def push_back (arg__1)
def push_front (arg__1)
def remove (i[, n=1])
def removeAll (arg__1)
def removeAt (i)
def removeFirst ()
def removeLast ()
def removeOne (arg__1)
def reserve (size)
def resize (size)
def select (topLeft, bottomRight)
def shrink_to_fit ()
def size ()
def sliced (pos)
def sliced (pos, n)
def squeeze ()
def swap (other)
def swapItemsAt (i, j)
def takeAt (i)
def toList ()
def toVector ()
def value (i)

Static functions¶

def fromList (list)
def fromVector (vector)
def split (range, other, result)

Detailed Description¶

A QItemSelection describes the items in a model that have been selected by the user. A QItemSelection is basically a list of selection ranges, see QItemSelectionRange . It provides functions for creating and manipulating selections, and selecting a range of items from a model.

The QItemSelection class is one of the Model/View Classes and is part of Qt’s model/view framework .

An item selection can be constructed and initialized to contain a range of items from an existing model. The following example constructs a selection that contains a range of items from the given model, beginning at the topLeft, and ending at the bottomRight.

selection = QItemSelection(topLeft, bottomRight)

An empty item selection can be constructed, and later populated as required. So, if the model is going to be unavailable when we construct the item selection, we can rewrite the above code in the following way:

selection = QItemSelection()
...
selection.select(topLeft, bottomRight)

QItemSelection saves memory, and avoids unnecessary work, by working with selection ranges rather than recording the model item index for each item in the selection. Generally, an instance of this class will contain a list of non-overlapping selection ranges.

Use merge() to merge one item selection into another without making overlapping ranges. Use split() to split one selection range into smaller ranges based on a another selection range.

See also

Model/View Programming QItemSelectionModel

class PySide6.QtCore.QItemSelection¶

PySide6.QtCore.QItemSelection(QItemSelection)

PySide6.QtCore.QItemSelection(topLeft, bottomRight)

Parameters

topLeft – PySide6.QtCore.QModelIndex
QItemSelection – PySide6.QtCore.QItemSelection
bottomRight – PySide6.QtCore.QModelIndex

Constructs an empty selection.

Constructs an item selection that extends from the top-left model item, specified by the topLeft index, to the bottom-right item, specified by bottomRight.

PySide6.QtCore.QItemSelection.append(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.append(l)

Parameters: l –

PySide6.QtCore.QItemSelection.at(i)¶

Parameters: i – qsizetype
Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.back()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.capacity()¶

Return type: qsizetype

PySide6.QtCore.QItemSelection.clear()¶

PySide6.QtCore.QItemSelection.constData()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.constFirst()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.constLast()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.contains(index)¶

Parameters: index – PySide6.QtCore.QModelIndex
Return type: bool

Returns true if the selection contains the given index; otherwise returns false.

PySide6.QtCore.QItemSelection.count()¶

Return type: qsizetype

PySide6.QtCore.QItemSelection.data()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.empty()¶

Return type: bool

PySide6.QtCore.QItemSelection.first(n)¶

Parameters: n – qsizetype
Return type

PySide6.QtCore.QItemSelection.first()

Return type: PySide6.QtCore.QItemSelectionRange

static PySide6.QtCore.QItemSelection.fromList(list)¶

Parameters: list –
Return type

static PySide6.QtCore.QItemSelection.fromVector(vector)¶

Parameters: vector –
Return type

PySide6.QtCore.QItemSelection.front()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.indexes()¶

Return type: QModelIndexList

Returns a list of model indexes that correspond to the selected items.

PySide6.QtCore.QItemSelection.insert(arg__1, arg__2)¶

Parameters

arg__1 – qsizetype
arg__2 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.isEmpty()¶

Return type: bool

PySide6.QtCore.QItemSelection.isSharedWith(other)¶

Parameters: other –
Return type: bool

PySide6.QtCore.QItemSelection.last()¶

Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.last(n)

Parameters: n – qsizetype
Return type

PySide6.QtCore.QItemSelection.length()¶

Return type: qsizetype

PySide6.QtCore.QItemSelection.merge(other, command)¶

Parameters

other – PySide6.QtCore.QItemSelection
command – SelectionFlags

Merges the other selection with this QItemSelection using the command given. This method guarantees that no ranges are overlapping.

Note that only Select , Deselect , and Toggle are supported.

See also

split()

PySide6.QtCore.QItemSelection.mid(pos[, len=-1])¶

Parameters

pos – qsizetype
len – qsizetype

Return type

PySide6.QtCore.QItemSelection.move(from, to)¶

Parameters

from – qsizetype
to – qsizetype

PySide6.QtCore.QItemSelection.__ne__(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelection
Return type: bool

PySide6.QtCore.QItemSelection.__add__(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelection
Return type: PySide6.QtCore.QItemSelection

PySide6.QtCore.QItemSelection.__iadd__(l)¶

Parameters: l –
Return type

PySide6.QtCore.QItemSelection.__lshift__(l)¶

Parameters: l –
Return type

PySide6.QtCore.QItemSelection.__eq__(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelection
Return type: bool

PySide6.QtCore.QItemSelection.operator[](i)

Parameters: i – qsizetype
Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.pop_back()¶

PySide6.QtCore.QItemSelection.pop_front()¶

PySide6.QtCore.QItemSelection.prepend(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.push_back(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.push_front(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.remove(i[, n=1])¶

Parameters

i – qsizetype
n – qsizetype

PySide6.QtCore.QItemSelection.removeAll(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.removeAt(i)¶

Parameters: i – qsizetype

PySide6.QtCore.QItemSelection.removeFirst()¶

PySide6.QtCore.QItemSelection.removeLast()¶

PySide6.QtCore.QItemSelection.removeOne(arg__1)¶

Parameters: arg__1 – PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.reserve(size)¶

Parameters: size – qsizetype

PySide6.QtCore.QItemSelection.resize(size)¶

Parameters: size – qsizetype

PySide6.QtCore.QItemSelection.select(topLeft, bottomRight)¶

Parameters

topLeft – PySide6.QtCore.QModelIndex
bottomRight – PySide6.QtCore.QModelIndex

Adds the items in the range that extends from the top-left model item, specified by the topLeft index, to the bottom-right item, specified by bottomRight to the list.

Note

topLeft and bottomRight must have the same parent.

PySide6.QtCore.QItemSelection.shrink_to_fit()¶

PySide6.QtCore.QItemSelection.size()¶

Return type: qsizetype

PySide6.QtCore.QItemSelection.sliced(pos, n)¶

Parameters

pos – qsizetype
n – qsizetype

Return type

PySide6.QtCore.QItemSelection.sliced(pos)

Parameters: pos – qsizetype
Return type

static PySide6.QtCore.QItemSelection.split(range, other, result)¶

Parameters

range – PySide6.QtCore.QItemSelectionRange
other – PySide6.QtCore.QItemSelectionRange
result – PySide6.QtCore.QItemSelection

Splits the selection range using the selection other range. Removes all items in other from range and puts the result in result. This can be compared with the semantics of the subtract operation of a set.

See also

merge()

PySide6.QtCore.QItemSelection.squeeze()¶

PySide6.QtCore.QItemSelection.swap(other)¶

Parameters: other –

PySide6.QtCore.QItemSelection.swapItemsAt(i, j)¶

Parameters

i – qsizetype
j – qsizetype

PySide6.QtCore.QItemSelection.takeAt(i)¶

Parameters: i – qsizetype
Return type: PySide6.QtCore.QItemSelectionRange

PySide6.QtCore.QItemSelection.toList()¶

Return type

PySide6.QtCore.QItemSelection.toVector()¶

Return type

PySide6.QtCore.QItemSelection.value(i)¶

Parameters: i – qsizetype
Return type: PySide6.QtCore.QItemSelectionRange

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QItemSelection¶

Synopsis¶

Functions¶

Static functions¶

Detailed Description¶