/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* The KeyboardManager class is used to help dispatch keyboard actions for the
* WHEN_IN_FOCUSED_WINDOW style actions. Actions with other conditions are handled
* directly in JComponent.
*
* Here's a description of the symantics of how keyboard dispatching should work
* atleast as I understand it.
*
* KeyEvents are dispatched to the focused component. The focus manager gets first
* crack at processing this event. If the focus manager doesn't want it, then
* the JComponent calls super.processKeyEvent() this allows listeners a chance
* to process the event.
*
* If none of the listeners "consumes" the event then the keybindings get a shot.
* This is where things start to get interesting. First, KeyStokes defined with the
* WHEN_FOCUSED condition get a chance. If none of these want the event, then the component
* walks though it's parents looked for actions of type WHEN_ANCESTOR_OF_FOCUSED_COMPONENT.
*
* If no one has taken it yet, then it winds up here. We then look for components registered
* for WHEN_IN_FOCUSED_WINDOW events and fire to them. Note that if none of those are found
* then we pass the event to the menubars and let them have a crack at it. They're handled differently.
*
* Lastly, we check if we're looking at an internal frame. If we are and no one wanted the event
* then we move up to the InternalFrame's creator and see if anyone wants the event (and so on and so on).
*
*
* @see InputMap
*/
class KeyboardManager {
/**
* maps top-level containers to a sub-hashtable full of keystrokes
*/
/**
* This is mainly used for fast unregister operations
*/
Hashtable<ComponentKeyStrokePair, Container> componentKeyStrokeMap = new Hashtable<ComponentKeyStrokePair, Container>();
return currentManager;
}
currentManager = km;
}
/**
* register keystrokes here which are for the WHEN_IN_FOCUSED_WINDOW
* case.
* Other types of keystrokes will be handled by walking the hierarchy
* That simplifies some potentially hairy stuff.
*/
if (topContainer == null) {
return;
}
}
if (!v.contains(c)) { // only add if this keystroke isn't registered for this component
v.addElement(c);
}
} else if (tmp instanceof JComponent) {
// if a JComponent is there then remove it and replace it with a vector
// Then add the old compoennt and the new compoent to the vector
// then insert the vector in the table
if (tmp != c) { // this means this is already registered for this component, no need to dup
v.addElement(c);
}
} else {
}
// Check for EmbeddedFrame case, they know how to process accelerators even
// when focus is not in Java
if (topContainer instanceof EmbeddedFrame) {
}
}
/**
* Find the top focusable Window, Applet, or InternalFrame
*/
p instanceof Applet || p instanceof JInternalFrame) {
return p;
}
}
return null;
}
// component may have already been removed from the hierarchy, we
// need to look up the container using the componentKeyStrokeMap.
return;
}
return;
}
return;
}
//System.out.println("removed a stroke" + ks);
} else if (tmp instanceof Vector ) { // this means there is more than one component reg for this key
v.removeElement(c);
if ( v.isEmpty() ) {
//System.out.println("removed a ks vector");
}
}
//System.out.println("removed a container");
}
// Check for EmbeddedFrame case, they know how to process accelerators even
// when focus is not in Java
if (topContainer instanceof EmbeddedFrame) {
}
}
/**
* This method is called when the focused component (and none of
* its ancestors) want the key event. This will look up the keystroke
* to see if any chidren (or subchildren) of the specified container
* want a crack at the event.
* If one of them wants it, then it will "DO-THE-RIGHT-THING"
*/
if (e.isConsumed()) {
}
// There may be two keystrokes associated with a low-level key event;
// in this case a keystroke made of an extended key code has a priority.
} else {
if(e.getKeyCode() != e.getExtendedKeyCode()) {
}
}
// extended code has priority
}
}
}
// don't do anything
} else if ( tmp instanceof JComponent) {
}
// There is no well defined order for WHEN_IN_FOCUSED_WINDOW
// bindings, but we give precedence to those bindings just
// added. This is done so that JMenus WHEN_IN_FOCUSED_WINDOW
// bindings are accessed before those of the JRootPane (they
// both have a WHEN_IN_FOCUSED_WINDOW binding for enter).
//System.out.println("Trying collision: " + c + " vector = "+ v.size());
if (e.isConsumed())
return true;
}
}
} else {
// This means that tmp wasn't null, a JComponent, or a Vector. What is it?
}
}
if (e.isConsumed()) {
return true;
}
// if no one else handled it, then give the menus a crack
// The're handled differently. The key is to let any JMenuBars
// process the event
if (v != null) {
while (iter.hasMoreElements()) {
if (extended) {
}
if (!extended || !e.isConsumed()) {
}
if (e.isConsumed()) {
return true;
}
}
}
}
}
return e.isConsumed();
}
pressed)) {
e.consume();
}
}
return;
}
}
// use the menubar class as the key
// then make one.
}
}
}
if (topContainer == null) {
return;
}
if (v != null) {
v.removeElement(mb);
if (v.isEmpty()) {
// remove table to enable GC
}
}
}
}
}
return keyMap;
}
/**
* This class is used to create keys for a hashtable
* which looks up topContainers based on component, keystroke pairs
* This is used to make unregistering KeyStrokes fast
*/
class ComponentKeyStrokePair {
}
if ( !(o instanceof ComponentKeyStrokePair)) {
return false;
}
}
public int hashCode() {
}
}
} // end KeyboardManager