Examples of java.beans.VetoableChangeSupport

java.beans.VetoableChangeSupport
This is a utility class that can be used by beans that support constrained properties. You can use an instance of this class as a member field of your bean and delegate various work to it. This class is serializable. When it is serialized it will save (and restore) any listeners that are themselves serializable. Any non-serializable listeners will be skipped during serialization.

    aVetoSupport.fireVetoableChange(propertyName, oldValue, newValue);
  }


  protected final void fireVetoableChange(String propertyName, boolean oldValue, boolean newValue)
      throws PropertyVetoException {
    VetoableChangeSupport aVetoSupport = this.vetoSupport;
    if (aVetoSupport == null) {
      return;
    }
    aVetoSupport.fireVetoableChange(propertyName, oldValue, newValue);
  }

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    fireVetoableChange(propertyName, new Double(oldValue), new Double(newValue));
  }


  protected final void fireVetoableChange(String propertyName, int oldValue, int newValue)
      throws PropertyVetoException {
    VetoableChangeSupport aVetoSupport = this.vetoSupport;
    if (aVetoSupport == null) {
      return;
    }
    aVetoSupport.fireVetoableChange(propertyName, oldValue, newValue);
  }

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        fireMyPropertyChange(propName, oldVal, newVal);
    }


     protected void fireMyVetoableChange(String name, Object oldV, Object newV) throws PropertyVetoException {
        if (null == vcs) {
            vcs = new VetoableChangeSupport(this);
        }
        vcs.fireVetoableChange(name,oldV,newV);
    }

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        vcs.fireVetoableChange(name,oldV,newV);
    }
    
    protected void fireMyVetoableChange(String name, int oldV, int newV) throws PropertyVetoException {
        if (null == vcs) {
            vcs = new VetoableChangeSupport(this);
        }
        vcs.fireVetoableChange(name,oldV,newV);
    }

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    /** Add a Vetoable listener to this bean.
     * @param pcl VetoableChangeListener to add
     */    
   public void addVetoableChangeListener(VetoableChangeListener pcl) {
       if (null == vcs)
           vcs = new VetoableChangeSupport(this);
       vcs.addVetoableChangeListener(pcl);
   }

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    public void addVetoableChangeListener(VetoableChangeListener listener) {
        if (listener != null) {
            synchronized (this) {
                if (vetoableSupport == null) {
                    vetoableSupport =
                        new VetoableChangeSupport(this);
                }
                vetoableSupport.addVetoableChangeListener(listener);
            }
        }
    }

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     * @see #getVetoableChangeListeners(java.lang.String)
     * @since 1.4
     */
    public synchronized VetoableChangeListener[] getVetoableChangeListeners() {
        if (vetoableSupport == null) {
            vetoableSupport = new VetoableChangeSupport(this);
        }
        return vetoableSupport.getVetoableChangeListeners();
    }

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                                          VetoableChangeListener listener) {
        if (listener != null) {
            synchronized (this) {
                if (vetoableSupport == null) {
                    vetoableSupport =
                        new VetoableChangeSupport(this);
                }
                vetoableSupport.addVetoableChangeListener(propertyName,
                                                          listener);
            }
        }

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     * @see #getVetoableChangeListeners
     * @since 1.4
     */
    public synchronized VetoableChangeListener[] getVetoableChangeListeners(String propertyName) {
        if (vetoableSupport == null) {
            vetoableSupport = new VetoableChangeSupport(this);
        }
        return vetoableSupport.getVetoableChangeListeners(propertyName);
    }

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        throws PropertyVetoException
    {
        if (oldValue == newValue) {
            return;
        }
        VetoableChangeSupport vetoableSupport =
            this.vetoableSupport;
        if (vetoableSupport != null) {
            vetoableSupport.fireVetoableChange(propertyName, oldValue,
                                               newValue);
        }
    }

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