wx.RearrangeList

A listbox-like control allowing the user to rearrange the items and to enable or disable them.

This class allows changing the order of the items shown in it as well as checking or unchecking them individually. The data structure used to allow this is the order array which contains the items indices indexed by their position with an added twist that the unchecked items are represented by the bitwise complement of the corresponding index (for any architecture using two’s complement for negative numbers representation (i.e. just about any at all) this means that a checked item N is represented by -N-1 in unchecked state). In practice this means that you must apply the C bitwise complement operator when constructing the order array, e.g.

order = [0]  # checked item #0

So, for example, the array order [1 -3 0] used in conjunction with the items array [“first”, “second”, “third”] means that the items order is “second”, “third”, “first” and the “third” item is unchecked while the other two are checked.

This convention is used both for the order argument of the control constructor or Create and for the array returned from GetCurrentOrder.

Usually this control will be used together with other controls allowing to move the items around in it interactively. The simplest possible solution is to use wx.RearrangeCtrl which combines it with two standard buttons to move the current item up or down.

Note that while most of the methods for items manipulation such as Append, Insert or Delete, inherited from wx.ItemContainer work as expected for this class, Set somewhat unexpectedly resets the order of the items as it clears the control first, also clearing the order as a side effect, before adding the new items.

Added in version 2.9.0.

Class Hierarchy

Inheritance diagram for class RearrangeList:

Methods Summary

__init__	Default constructor.
CanMoveCurrentDown	Return True if the currently selected item can be moved down.
CanMoveCurrentUp	Return True if the currently selected item can be moved up.
Create	Effectively creates the window for an object created using the default constructor.
GetClassDefaultAttributes
GetCurrentOrder	Return the current order of the items.
MoveCurrentDown	Move the currently selected item one position below.
MoveCurrentUp	Move the currently selected item one position above.

Properties Summary

CurrentOrder

See GetCurrentOrder

Class API

class wx.RearrangeList(CheckListBox)

Possible constructors:

RearrangeList() -> None

RearrangeList(parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize,
              order=[], items=[], style=0, validator=DefaultValidator,
              name=RearrangeListNameStr) -> None

A listbox-like control allowing the user to rearrange the items and to enable or disable them.

Methods

__init__(self, *args, **kw)

Overloaded Implementations:

---

__init__ (self)

Default constructor.

Create must be called later to effectively create the control.

Return type:

None

---

__init__ (self, parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize, order=[], items=[], style=0, validator=DefaultValidator, name=RearrangeListNameStr)

Constructor really creating the control.

Please see Create for the parameters description.

Parameters:

• parent (wx.Window)

• id (wx.WindowID)

• pos (wx.Point)

• size (wx.Size)

• order (list of integers)

• items (list of strings)

• style (long)

• validator (wx.Validator)

• name (string)

Return type:

None

---

---

CanMoveCurrentDown(self)

Return True if the currently selected item can be moved down.

Return type:

bool

See also

CanMoveCurrentUp

---

CanMoveCurrentUp(self)

Return True if the currently selected item can be moved up.

This function is useful for EVT_UPDATE_UI handler for the standard “Up” button often used together with this control and wx.RearrangeCtrl uses it in this way.

Return type:

bool

Returns:

True if the currently selected item can be moved up in the listbox, False if there is no selection or the current item is the first one.

See also

CanMoveCurrentDown

---

Create(self, parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize, order=[], items=[], style=0, validator=DefaultValidator, name=RearrangeListNameStr)

Effectively creates the window for an object created using the default constructor.

This function is very similar to wx.CheckListBox.Create except that it has an additional parameter specifying the initial order of the items. Please see the class documentation for the explanation of the conventions used by the order argument.

Parameters:

• parent (wx.Window) – The parent window, must be not None.

• id (wx.WindowID) – The window identifier.

• pos (wx.Point) – The initial window position.

• size (wx.Size) – The initial window size.

• order (list of integers) – Array specifying the initial order of the items in items array.

• items (list of strings) – The items to display in the list.

• style (long) – The control style, there are no special styles for this class but the base class styles can be used here.

• validator (wx.Validator) – Optional window validator.

• name (string) – Optional window name.

Return type:

bool

---

static GetClassDefaultAttributes(variant=WINDOW_VARIANT_NORMAL)

Parameters:

variant (WindowVariant)

Return type:

wx.VisualAttributes

---

GetCurrentOrder(self)

Return the current order of the items.

The order may be different from the one passed to the constructor if MoveCurrentUp or MoveCurrentDown were called.

Return type:

List[int]

---

MoveCurrentDown(self)

Move the currently selected item one position below.

Return type:

bool

See also

MoveCurrentUp

---

MoveCurrentUp(self)

Move the currently selected item one position above.

This method is useful to implement the standard “Up” button behaviour and wx.RearrangeCtrl uses it for this.

Return type:

bool

Returns:

True if the item was moved or False if this couldn’t be done.

See also

MoveCurrentDown

Properties

CurrentOrder

See GetCurrentOrder