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Java Standard Edition (SE)

UndoableEditSupport


javax.swing.undo

Class UndoableEditSupport



  • public class UndoableEditSupport
    extends Object
    A support class used for managing UndoableEdit listeners.
    • Constructor Detail

      • UndoableEditSupport

        public UndoableEditSupport()
        Constructs an UndoableEditSupport object.
      • UndoableEditSupport

        public UndoableEditSupport(Object r)
        Constructs an UndoableEditSupport object.
        Parameters:
        r - an Object
    • Method Detail

      • getUndoableEditListeners

        public UndoableEditListener[] getUndoableEditListeners()
        Returns an array of all the UndoableEditListeners added to this UndoableEditSupport with addUndoableEditListener().
        Returns:
        all of the UndoableEditListeners added or an empty array if no listeners have been added
        Since:
        1.4
      • _postEdit

        protected void _postEdit(UndoableEdit e)
        Called only from postEdit and endUpdate. Calls undoableEditHappened in all listeners. No synchronization is performed here, since the two calling methods are synchronized.
      • postEdit

        public void postEdit(UndoableEdit e)
        DEADLOCK WARNING: Calling this method may call undoableEditHappened in all listeners. It is unwise to call this method from one of its listeners.
      • getUpdateLevel

        public int getUpdateLevel()
        Returns the update level value.
        Returns:
        an integer representing the update level
      • beginUpdate

        public void beginUpdate()
      • createCompoundEdit

        protected CompoundEdit createCompoundEdit()
        Called only from beginUpdate. Exposed here for subclasses' use.
      • endUpdate

        public void endUpdate()
        DEADLOCK WARNING: Calling this method may call undoableEditHappened in all listeners. It is unwise to call this method from one of its listeners.
      • toString

        public String toString()
        Returns a string that displays and identifies this object's properties.
        Overrides:
        toString in class Object
        Returns:
        a String representation of this object


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