Class

PapersViewUndoContext

Description [src]

final class PapersView.UndoContext : GObject.Object
{
  /* No available fields */
}

This context singleton manages two stacks of PpsUndoAction that contain actions that may be undone or redone.

These actions may be added by a number of objects that implement PpsUndoHandler (e.g. the annotations context). Each handler provides a pointer to an opaque structure that contains data to undo the action.

The switch between the undo/redo stacks is done transparently: actions are added to the redo stack if and only if another action is being undone (i.e. pps_undo_context_undo is being called).

Ancestors

Constructors

pps_undo_context_new
No description available.

Instance methods

pps_undo_context_add_action

This method adds a new action to the undo (or redo if it is used while undoing) stack. If it is undone in the future, pps_undo_handler_undo will be called on handler with data.

pps_undo_context_get_last_action
No description available.

pps_undo_context_get_last_handler
No description available.

pps_undo_context_redo

Similar to the undo method, but taking an action from the redo stack.

pps_undo_context_undo

This pops the last action on the undo stack and undoes it by calling the undo interface method of the PpsUndoHandler associated to the action. While undoing, the PpsUndoHandler should add a new action with pps_undo_context_add_action to redo what has just been undone, it will be added to the redo stack by the undo context.

Methods inherited from GObject (43)

Please see GObject for a full list of methods.

Properties

PapersView.UndoContext:document-model
No description available.

Signals

Signals inherited from GObject (1)
GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

Class structure

struct PapersViewUndoContextClass {
  GObjectClass parent_class;
  
}

No description available.

Class members
parent_class: GObjectClass

No description available.