/**
* Forwards the <code>DocumentEvent</code> to the give child view. This simply messages the view
* with a call to <code>insertUpdate</code>, <code>removeUpdate</code>, or <code>changedUpdate
* </code> depending upon the type of the event. This is called by <a
* href="#forwardUpdate">forwardUpdate</a> to forward the event to children that need it.
*
* @param v the child view to forward the event to
* @param e the change information from the associated document
* @param a the current allocation of the view
* @param f the factory to use to rebuild if the view has children
* @see #forwardUpdate
* @since 1.3
*/
protected void forwardUpdateToView(View v, DocumentEvent e, Shape a, ViewFactory f) {
DocumentEvent.EventType type = e.getType();
if (type == DocumentEvent.EventType.INSERT) {
v.insertUpdate(e, a, f);
} else if (type == DocumentEvent.EventType.REMOVE) {
v.removeUpdate(e, a, f);
} else {
v.changedUpdate(e, a, f);
}
}
/** Invoked when the Elements attributes have changed. Recreates the image. */
@Override
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) {
super.changedUpdate(e, a, f);
synchronized (this) {
state |= RELOAD_FLAG | RELOAD_IMAGE_FLAG;
}
// Assume the worst.
preferenceChanged(null, true, true);
}
/** My attributes may have changed. */
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) {
if (DEBUG) System.out.println("ImageView: changedUpdate begin...");
super.changedUpdate(e, a, f);
float align = getVerticalAlignment();
int height = fHeight;
int width = fWidth;
initialize(getElement());
boolean hChanged = fHeight != height;
boolean wChanged = fWidth != width;
if (hChanged || wChanged || getVerticalAlignment() != align) {
if (DEBUG) System.out.println("ImageView: calling preferenceChanged");
getParent().preferenceChanged(this, hChanged, wChanged);
}
if (DEBUG) System.out.println("ImageView: changedUpdate end; valign=" + getVerticalAlignment());
}