/* * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * 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. */package sun.awt; import java.awt.Component;import java.awt.KeyboardFocusManager;import java.awt.Window;import java.awt.Canvas;import java.awt.Scrollbar;import java.awt.Panel; import java.awt.event.FocusEvent; import java.awt.peer.KeyboardFocusManagerPeer;import java.awt.peer.ComponentPeer; import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method; import sun.util.logging.PlatformLogger; public abstract class KeyboardFocusManagerPeerImpl implements KeyboardFocusManagerPeer { private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.awt.focus.KeyboardFocusManagerPeerImpl"); private static AWTAccessor.KeyboardFocusManagerAccessor kfmAccessor = AWTAccessor.getKeyboardFocusManagerAccessor(); // The constants are copied from java.awt.KeyboardFocusManager public static final int SNFH_FAILURE = 0; public static final int SNFH_SUCCESS_HANDLED = 1; public static final int SNFH_SUCCESS_PROCEED = 2; protected KeyboardFocusManager manager; public KeyboardFocusManagerPeerImpl(KeyboardFocusManager manager) { this.manager = manager; } @Override public void clearGlobalFocusOwner(Window activeWindow) { if (activeWindow != null) { Component focusOwner = activeWindow.getFocusOwner(); if (focusLog.isLoggable(PlatformLogger.FINE)) focusLog.fine("Clearing global focus owner " + focusOwner); if (focusOwner != null) { FocusEvent fl = new CausedFocusEvent(focusOwner, FocusEvent.FOCUS_LOST, false, null, CausedFocusEvent.Cause.CLEAR_GLOBAL_FOCUS_OWNER); SunToolkit.postPriorityEvent(fl); } } } /* * WARNING: Don't call it on the Toolkit thread. * * Checks if the component: * 1) accepts focus on click (in general) * 2) may be a focus owner (in particular) */ public static boolean shouldFocusOnClick(Component component) { boolean acceptFocusOnClick = false; // A component is generally allowed to accept focus on click // if its peer is focusable. There're some exceptions though. // CANVAS & SCROLLBAR accept focus on click if (component instanceof Canvas || component instanceof Scrollbar) { acceptFocusOnClick = true; // PANEL, empty only, accepts focus on click } else if (component instanceof Panel) { acceptFocusOnClick = (((Panel)component).getComponentCount() == 0); // Other components } else { ComponentPeer peer = (component != null ? component.getPeer() : null); acceptFocusOnClick = (peer != null ? peer.isFocusable() : false); } return acceptFocusOnClick && AWTAccessor.getComponentAccessor().canBeFocusOwner(component); } /* * Posts proper lost/gain focus events to the event queue. */ public static boolean deliverFocus(Component lightweightChild, Component target, boolean temporary, boolean focusedWindowChangeAllowed, long time, CausedFocusEvent.Cause cause, Component currentFocusOwner) // provided by the descendant peers { if (lightweightChild == null) { lightweightChild = (Component)target; } Component currentOwner = currentFocusOwner; if (currentOwner != null && currentOwner.getPeer() == null) { currentOwner = null; } if (currentOwner != null) { FocusEvent fl = new CausedFocusEvent(currentOwner, FocusEvent.FOCUS_LOST, false, lightweightChild, cause); if (focusLog.isLoggable(PlatformLogger.FINER)) focusLog.finer("Posting focus event: " + fl); SunToolkit.postPriorityEvent(fl); } FocusEvent fg = new CausedFocusEvent(lightweightChild, FocusEvent.FOCUS_GAINED, false, currentOwner, cause); if (focusLog.isLoggable(PlatformLogger.FINER)) focusLog.finer("Posting focus event: " + fg); SunToolkit.postPriorityEvent(fg); return true; } // WARNING: Don't call it on the Toolkit thread. public static boolean requestFocusFor(Component target, CausedFocusEvent.Cause cause) { return AWTAccessor.getComponentAccessor().requestFocus(target, cause); } // WARNING: Don't call it on the Toolkit thread. public static int shouldNativelyFocusHeavyweight(Component heavyweight, Component descendant, boolean temporary, boolean focusedWindowChangeAllowed, long time, CausedFocusEvent.Cause cause) { return kfmAccessor.shouldNativelyFocusHeavyweight( heavyweight, descendant, temporary, focusedWindowChangeAllowed, time, cause); } public static void removeLastFocusRequest(Component heavyweight) { kfmAccessor.removeLastFocusRequest(heavyweight); } // WARNING: Don't call it on the Toolkit thread. public static boolean processSynchronousLightweightTransfer(Component heavyweight, Component descendant, boolean temporary, boolean focusedWindowChangeAllowed, long time) { return kfmAccessor.processSynchronousLightweightTransfer( heavyweight, descendant, temporary, focusedWindowChangeAllowed, time); }}
/*
* Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* 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.
*/
package sun.awt;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Window;
import java.awt.Canvas;
import java.awt.Scrollbar;
import java.awt.Panel;
import java.awt.event.FocusEvent;
import java.awt.peer.KeyboardFocusManagerPeer;
import java.awt.peer.ComponentPeer;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import sun.util.logging.PlatformLogger;
public abstract class KeyboardFocusManagerPeerImpl implements KeyboardFocusManagerPeer {
private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.awt.focus.KeyboardFocusManagerPeerImpl");
private static AWTAccessor.KeyboardFocusManagerAccessor kfmAccessor =
AWTAccessor.getKeyboardFocusManagerAccessor();
// The constants are copied from java.awt.KeyboardFocusManager
public static final int SNFH_FAILURE = 0;
public static final int SNFH_SUCCESS_HANDLED = 1;
public static final int SNFH_SUCCESS_PROCEED = 2;
protected KeyboardFocusManager manager;
public KeyboardFocusManagerPeerImpl(KeyboardFocusManager manager) {
this.manager = manager;
}
@Override
public void clearGlobalFocusOwner(Window activeWindow) {
if (activeWindow != null) {
Component focusOwner = activeWindow.getFocusOwner();
if (focusLog.isLoggable(PlatformLogger.FINE))
focusLog.fine("Clearing global focus owner " + focusOwner);
if (focusOwner != null) {
FocusEvent fl = new CausedFocusEvent(focusOwner, FocusEvent.FOCUS_LOST, false, null,
CausedFocusEvent.Cause.CLEAR_GLOBAL_FOCUS_OWNER);
SunToolkit.postPriorityEvent(fl);
}
}
}
/*
* WARNING: Don't call it on the Toolkit thread.
*
* Checks if the component:
* 1) accepts focus on click (in general)
* 2) may be a focus owner (in particular)
*/
public static boolean shouldFocusOnClick(Component component) {
boolean acceptFocusOnClick = false;
// A component is generally allowed to accept focus on click
// if its peer is focusable. There're some exceptions though.
// CANVAS & SCROLLBAR accept focus on click
if (component instanceof Canvas ||
component instanceof Scrollbar)
{
acceptFocusOnClick = true;
// PANEL, empty only, accepts focus on click
} else if (component instanceof Panel) {
acceptFocusOnClick = (((Panel)component).getComponentCount() == 0);
// Other components
} else {
ComponentPeer peer = (component != null ? component.getPeer() : null);
acceptFocusOnClick = (peer != null ? peer.isFocusable() : false);
}
return acceptFocusOnClick &&
AWTAccessor.getComponentAccessor().canBeFocusOwner(component);
}
/*
* Posts proper lost/gain focus events to the event queue.
*/
public static boolean deliverFocus(Component lightweightChild,
Component target,
boolean temporary,
boolean focusedWindowChangeAllowed,
long time,
CausedFocusEvent.Cause cause,
Component currentFocusOwner) // provided by the descendant peers
{
if (lightweightChild == null) {
lightweightChild = (Component)target;
}
Component currentOwner = currentFocusOwner;
if (currentOwner != null && currentOwner.getPeer() == null) {
currentOwner = null;
}
if (currentOwner != null) {
FocusEvent fl = new CausedFocusEvent(currentOwner, FocusEvent.FOCUS_LOST,
false, lightweightChild, cause);
if (focusLog.isLoggable(PlatformLogger.FINER))
focusLog.finer("Posting focus event: " + fl);
SunToolkit.postPriorityEvent(fl);
}
FocusEvent fg = new CausedFocusEvent(lightweightChild, FocusEvent.FOCUS_GAINED,
false, currentOwner, cause);
if (focusLog.isLoggable(PlatformLogger.FINER))
focusLog.finer("Posting focus event: " + fg);
SunToolkit.postPriorityEvent(fg);
return true;
}
// WARNING: Don't call it on the Toolkit thread.
public static boolean requestFocusFor(Component target, CausedFocusEvent.Cause cause) {
return AWTAccessor.getComponentAccessor().requestFocus(target, cause);
}
// WARNING: Don't call it on the Toolkit thread.
public static int shouldNativelyFocusHeavyweight(Component heavyweight,
Component descendant,
boolean temporary,
boolean focusedWindowChangeAllowed,
long time,
CausedFocusEvent.Cause cause)
{
return kfmAccessor.shouldNativelyFocusHeavyweight(
heavyweight, descendant, temporary, focusedWindowChangeAllowed, time, cause);
}
public static void removeLastFocusRequest(Component heavyweight) {
kfmAccessor.removeLastFocusRequest(heavyweight);
}
// WARNING: Don't call it on the Toolkit thread.
public static boolean processSynchronousLightweightTransfer(Component heavyweight,
Component descendant,
boolean temporary,
boolean focusedWindowChangeAllowed,
long time)
{
return kfmAccessor.processSynchronousLightweightTransfer(
heavyweight, descendant, temporary, focusedWindowChangeAllowed, time);
}
}