java.beans.VetoableChangeSupport.hasListeners java code examples

Common ways to obtain VetoableChangeSupport

private void myMethod () {
 VetoableChangeSupport v =Object sourceBean;new VetoableChangeSupport(sourceBean)
AbstractBean abstractBean;new VetoableChangeSupport(abstractBean)
PropertyEnv propertyEnv;new VetoableChangeSupport(propertyEnv)
Smart code suggestions by Codota
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

if (vetoableChangeSupport == null)
  return false;
return vetoableChangeSupport.hasListeners(null);

/**
 * Checks if there are any vetoable change listeners for a specific property, including those registered on all properties. If <code>propertyName</code> is
 * <code>null</code>, this method only checks for listeners registered on all properties.
 * @param propertyName The property name.
 * @return <code>true</code> if there are one or more listeners for the given property.
 */
public boolean hasVetoableChangeListeners(final String propertyName) {
  return vetoableChangeSupport != null ? vetoableChangeSupport.hasListeners(propertyName) : false; //if we have vetoable change support, ask it about listeners; if there is no support, there can be no listeners
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners (final String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName  the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs.hasListeners(propertyName);
}

public boolean hasListeners(String propertyName) {
  return support.hasListeners(propertyName);
}

/**
 * Check if there are any listeners for a specific property, including
 * those registered on all properties.  If <code>propertyName</code>
 * is null, only check for listeners registered on all properties.
 *
 * @param propertyName the property name.
 * @return true if there are one or more listeners for the given property
 */
protected final boolean hasVetoableChangeListeners(String propertyName) {
  return vcs().hasListeners(propertyName);
}

protected synchronized void setProperty(String property, Object value, Class<?> clazz) throws PropertyVetoException
{
  boolean pc = (_pcSupport != null) && _pcSupport.hasListeners(property);
  boolean vc = (_vcSupport != null) && _vcSupport.hasListeners(property);
  Object oldVal = null;
  Object newVal = ((value != null) && clazz.equals(String.class) && !(value instanceof String)) ? value.toString() : value;
  if (pc || vc)
  {
    oldVal = getProperty(property, clazz);
  }
  if (vc)
  {
    fireVetoableChange(property, oldVal, value);
  }
  setPropertySpi(property, newVal, clazz);
  if (pc)
  {
    firePropertyChange(property, oldVal, value);
  }
}

protected synchronized void setProperty(String property, Object value, Class<?> clazz) throws PropertyVetoException
{
  boolean pc = (_pcSupport != null) && _pcSupport.hasListeners(property);
  boolean vc = (_vcSupport != null) && _vcSupport.hasListeners(property);
  Object oldVal = null;
  Object newVal = ((value != null) && clazz.equals(String.class) && !(value instanceof String)) ? value.toString() : value;
  if (pc || vc)
  {
    oldVal = getProperty(property, clazz);
  }
  if (vc)
  {
    fireVetoableChange(property, oldVal, value);
  }
  setPropertySpi(property, newVal, clazz);
  if (pc)
  {
    firePropertyChange(property, oldVal, value);
  }
}

protected synchronized void setProperty(String property, Object value, Class<?> clazz) throws PropertyVetoException
{
  boolean pc = (_pcSupport != null) && _pcSupport.hasListeners(property);
  boolean vc = (_vcSupport != null) && _vcSupport.hasListeners(property);
  Object oldVal = null;
  Object newVal = ((value != null) && clazz.equals(String.class) && !(value instanceof String)) ? value.toString() : value;
  if (pc || vc)
  {
    oldVal = getProperty(property, clazz);
  }
  if (vc)
  {
    fireVetoableChange(property, oldVal, value);
  }
  setPropertySpi(property, newVal, clazz);
  if (pc)
  {
    firePropertyChange(property, oldVal, value);
  }
}

" in " + this.beanName + " - " +
(this.vetoableListeners==null?"null listener":
(this.vetoableListeners.hasListeners(null)?
"has listeners":"no listener")) );

Javadoc

Check if there are any listeners for a specific property, including those registered on all properties. If propertyName is null, only check for listeners registered on all properties.

Popular methods of VetoableChangeSupport

fireVetoableChange
Reports a boolean constrained property update to listeners that have been registered to track update
addVetoableChangeListener
Add a VetoableChangeListener for a specific property. The listener will be invoked only when a call
removeVetoableChangeListener
Remove a VetoableChangeListener for a specific property. If listener was added more than once to the
<init>
Constructs a VetoableChangeSupport object.
getVetoableChangeListeners
Returns an array of all the listeners which have been associated with the named property.

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How to use hasListenersmethodin java.beans.VetoableChangeSupport

Best Java code snippets using java.beans.VetoableChangeSupport.hasListeners (Showing top 18 results out of 315)

How to use
hasListeners
method
in
java.beans.VetoableChangeSupport