Uranium
Application Framework
|
Public Member Functions | |
def | __init__ (self, controller) |
def | push (self, operation) |
def | undo (self) |
def | redo (self) |
def | getOperations (self) |
def | canUndo (self) |
def | canRedo (self) |
Static Public Attributes | |
changed = Signal() | |
A stack of operations. This maintains the history of operations, which allows for undoing and re-doing these operations.
def UM.Operations.OperationStack.OperationStack.canRedo | ( | self | ) |
Whether we can redo any more operations. :return: True if we can redo any more operations, or False otherwise.
def UM.Operations.OperationStack.OperationStack.canUndo | ( | self | ) |
Whether we can undo any more operations. :return: True if we can undo any more operations, or False otherwise.
def UM.Operations.OperationStack.OperationStack.getOperations | ( | self | ) |
Get the list of operations in the stack. The end of the list represents the more recent operations. :return: A list of the operations on the stack, in order.
def UM.Operations.OperationStack.OperationStack.push | ( | self, | |
operation | |||
) |
Push an operation on the stack. This will perform the following things in sequence: - If the current index is pointing to an item lower in the stack than the top, remove all operations from the current index to the top. - Append the operation to the stack. - Call redo() on the operation. - Perform merging of operations. :param operation: :type{Operation} The operation to push onto the stack.
def UM.Operations.OperationStack.OperationStack.redo | ( | self | ) |
Redo the next operation. This will call redo() on the current operation and increment the current index.
def UM.Operations.OperationStack.OperationStack.undo | ( | self | ) |
Undo the current operation. This will call undo() on the current operation and decrement the current index.