Package org.eclipse.nebula.visualization.internal.xygraph.undo

Class SizeLimitedStack<T>

java.lang.Object
org.eclipse.nebula.visualization.internal.xygraph.undo.SizeLimitedStack<T>
public class SizeLimitedStack<T>
extends java.lang.Object
A stack with limited size. If the stack is full, the oldest element will be removed when new element was pushed.

  • Constructor Summary

    Constructors 
    Constructor Description
    SizeLimitedStack​(int sizeLimit)
    Constructor

  • Method Summary

    Modifier and Type Method Description
    void clear()
    Empty the stack.
    T peek()
    Looks at the object at the top of this stack without removing it from the stack.
    T pop()
    Removes the object at the top of this stack and returns that object as the value of this function.
    void push​(T e)
    Pushes an item onto the top of this stack.
    int size()
    Returns the number of elements in this stack.
    java.lang.Object[] toArray()
    Return an array of all elements in the stack.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • SizeLimitedStack

      public SizeLimitedStack​(int sizeLimit)
      Constructor
      Parameters:
      sizeLimit - the maximum number of elements in the stack. If the stack is full, the oldest element will be removed when new element was pushed.

  • Method Details

    • push

      public void push​(T e)
      Pushes an item onto the top of this stack.
      Parameters:
      e - the item to be pushed onto this stack.

    • pop

      public T pop()
      Removes the object at the top of this stack and returns that object as the value of this function.
      Returns:
      The object at the top of this stack (the last item of the Vector object).
      Throws:
      java.util.NoSuchElementException - if this list is empty

    • peek

      public T peek()
      Looks at the object at the top of this stack without removing it from the stack.
      Returns:
      the object at the top of this stack (the last item of the Vector object).
      Throws:
      java.util.NoSuchElementException - if this list is empty

    • clear

      public void clear()
      Empty the stack.

    • toArray

      public java.lang.Object[] toArray()
      Return an array of all elements in the stack. The oldest element is the first element of the returned array.
      Returns:
      the array contained all elements in the stack.

    • size

      public int size()
      Returns the number of elements in this stack.
      Returns:
      the number of elements in this stack