/*
* 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.
*/
import javax.accessibility.*;
/**
* A generic Abstract Window Toolkit(AWT) container object is a component
* that can contain other AWT components.
* <p>
* Components added to a container are tracked in a list. The order
* of the list will define the components' front-to-back stacking order
* within the container. If no index is specified when adding a
* component to a container, it will be added to the end of the list
* (and hence to the bottom of the stacking order).
* <p>
* <b>Note</b>: For details on the focus subsystem, see
* How to Use the Focus Subsystem</a>,
* a section in <em>The Java Tutorial</em>, and the
* <a href="../../java/awt/doc-files/FocusSpec.html">Focus Specification</a>
* for more information.
*
* @author Arthur van Hoff
* @author Sami Shaio
* @see #add(java.awt.Component, int)
* @see #getComponent(int)
* @see LayoutManager
* @since JDK1.0
*/
private static final PlatformLogger eventLog = PlatformLogger.getLogger("java.awt.event.Container");
/**
* The components in this container.
* @see #add
* @see #getComponents
*/
/**
* Layout manager for this container.
* @see #doLayout
* @see #setLayout
* @see #getLayout
*/
/**
* Event router for lightweight components. If this container
* is native, this dispatcher takes care of forwarding and
* retargeting the events to lightweight components contained
* (if any).
*/
/**
* The focus traversal policy that will manage keyboard traversal of this
* Container's children, if this Container is a focus cycle root. If the
* value is null, this Container inherits its policy from its focus-cycle-
* root ancestor. If all such ancestors of this Container have null
* policies, then the current KeyboardFocusManager's default policy is
* used. If the value is non-null, this policy will be inherited by all
* focus-cycle-root children that have no keyboard-traversal policy of
* their own (as will, recursively, their focus-cycle-root children).
* <p>
* If this Container is not a focus cycle root, the value will be
* remembered, but will not be used or inherited by this or any other
* Containers until this Container is made a focus cycle root.
*
* @see #setFocusTraversalPolicy
* @see #getFocusTraversalPolicy
* @since 1.4
*/
/**
* Indicates whether this Component is the root of a focus traversal cycle.
* Once focus enters a traversal cycle, typically it cannot leave it via
* focus traversal unless one of the up- or down-cycle keys is pressed.
* Normal traversal is limited to this Container, and all of this
* Container's descendants that are not descendants of inferior focus cycle
* roots.
*
* @see #setFocusCycleRoot
* @see #isFocusCycleRoot
* @since 1.4
*/
private boolean focusCycleRoot = false;
/**
* Stores the value of focusTraversalPolicyProvider property.
* @since 1.5
* @see #setFocusTraversalPolicyProvider
*/
private boolean focusTraversalPolicyProvider;
// keeps track of the threads that are printing this component
// True if there is at least one thread that's printing this component
private transient boolean printing = false;
/* HierarchyListener and HierarchyBoundsListener support */
transient int listeningChildren;
transient int listeningBoundsChildren;
transient int descendantsCount;
/* Non-opaque window support -- see Window.setLayersOpaque */
/**
* JDK 1.1 serialVersionUID
*/
/**
* A constant which toggles one of the controllable behaviors
* of <code>getMouseEventTarget</code>. It is used to specify whether
* the method can return the Container on which it is originally called
* in case if none of its children are the current mouse event targets.
*
* @see #getMouseEventTarget(int, int, boolean, boolean, boolean)
*/
static final boolean INCLUDE_SELF = true;
/**
* A constant which toggles one of the controllable behaviors
* of <code>getMouseEventTarget</code>. It is used to specify whether
* the method should search only lightweight components.
*
* @see #getMouseEventTarget(int, int, boolean, boolean, boolean)
*/
static final boolean SEARCH_HEAVYWEIGHTS = true;
/*
* Number of HW or LW components in this container (including
* all descendant containers).
*/
private static final PlatformLogger mixingLog = PlatformLogger.getLogger("java.awt.mixing.Container");
/**
* @serialField ncomponents int
* The number of components in this container.
* This value can be null.
* @serialField component Component[]
* The components in this container.
* @serialField layoutMgr LayoutManager
* Layout manager for this container.
* @serialField dispatcher LightweightDispatcher
* Event router for lightweight components. If this container
* is native, this dispatcher takes care of forwarding and
* retargeting the events to lightweight components contained
* (if any).
* @serialField maxSize Dimension
* Maximum size of this Container.
* @serialField focusCycleRoot boolean
* Indicates whether this Component is the root of a focus traversal cycle.
* Once focus enters a traversal cycle, typically it cannot leave it via
* focus traversal unless one of the up- or down-cycle keys is pressed.
* Normal traversal is limited to this Container, and all of this
* Container's descendants that are not descendants of inferior focus cycle
* roots.
* @serialField containerSerializedDataVersion int
* Container Serial Data Version.
* @serialField focusTraversalPolicyProvider boolean
* Stores the value of focusTraversalPolicyProvider property.
*/
};
static {
/* ensure that the necessary native libraries are loaded */
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
}
});
}
/**
* Initialize JNI field and method IDs for fields that may be
called from C.
*/
private static native void initIDs();
/**
* Constructs a new Container. Containers can be extended directly,
* but are lightweight in this case and must be contained by a parent
* somewhere higher up in the component tree that is native.
* (such as Frame for example).
*/
public Container() {
}
void initializeFocusTraversalKeys() {
}
/**
* Gets the number of components in this panel.
* <p>
* Note: This method should be called under AWT tree lock.
*
* @return the number of components in this panel.
* @see #getComponent
* @since JDK1.1
* @see Component#getTreeLock()
*/
public int getComponentCount() {
return countComponents();
}
/**
* @deprecated As of JDK version 1.1,
* replaced by getComponentCount().
*/
public int countComponents() {
// This method is not synchronized under AWT tree lock.
// Instead, the calling code is responsible for the
// synchronization. See 6784816 for details.
}
/**
* Gets the nth component in this container.
* <p>
* Note: This method should be called under AWT tree lock.
*
* @param n the index of the component to get.
* @return the n<sup>th</sup> component in this container.
* @exception ArrayIndexOutOfBoundsException
* if the n<sup>th</sup> value does not exist.
* @see Component#getTreeLock()
*/
// This method is not synchronized under AWT tree lock.
// Instead, the calling code is responsible for the
// synchronization. See 6784816 for details.
try {
} catch (IndexOutOfBoundsException z) {
throw new ArrayIndexOutOfBoundsException("No such child: " + n);
}
}
/**
* Gets all the components in this container.
* <p>
* Note: This method should be called under AWT tree lock.
*
* @return an array of all the components in this container.
* @see Component#getTreeLock()
*/
// This method is not synchronized under AWT tree lock.
// Instead, the calling code is responsible for the
// synchronization. See 6784816 for details.
return getComponents_NoClientCode();
}
// NOTE: This method may be called by privileged threads.
// This functionality is implemented in a package-private method
// to insure that it cannot be overridden by client subclasses.
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
}
/*
* Wrapper for getComponents() method with a proper synchronization.
*/
synchronized (getTreeLock()) {
return getComponents();
}
}
/**
* Determines the insets of this container, which indicate the size
* of the container's border.
* <p>
* A <code>Frame</code> object, for example, has a top inset that
* corresponds to the height of the frame's title bar.
* @return the insets of this container.
* @see Insets
* @see LayoutManager
* @since JDK1.1
*/
return insets();
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>getInsets()</code>.
*/
if (peer instanceof ContainerPeer) {
}
}
/**
* Appends the specified component to the end of this container.
* This is a convenience method for {@link #addImpl}.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
* @param comp the component to be added
* @exception NullPointerException if {@code comp} is {@code null}
* @see #addImpl
* @see #invalidate
* @see #validate
* @see javax.swing.JComponent#revalidate()
* @return the component argument
*/
return comp;
}
/**
* Adds the specified component to this container.
* This is a convenience method for {@link #addImpl}.
* <p>
* This method is obsolete as of 1.1. Please use the
* method <code>add(Component, Object)</code> instead.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
* @exception NullPointerException if {@code comp} is {@code null}
* @see #add(Component, Object)
* @see #invalidate
*/
return comp;
}
/**
* Adds the specified component to this container at the given
* position.
* This is a convenience method for {@link #addImpl}.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
*
* @param comp the component to be added
* @param index the position at which to insert the component,
* or <code>-1</code> to append the component to the end
* @exception NullPointerException if {@code comp} is {@code null}
* @exception IllegalArgumentException if {@code index} is invalid (see
* {@link #addImpl} for details)
* @return the component <code>comp</code>
* @see #addImpl
* @see #remove
* @see #invalidate
* @see #validate
* @see javax.swing.JComponent#revalidate()
*/
return comp;
}
/**
* Checks that the component
* isn't supposed to be added into itself.
*/
throw new IllegalArgumentException("adding container's parent to itself");
}
}
}
}
/**
* Checks that the component is not a Window instance.
*/
throw new IllegalArgumentException("adding a window to a container");
}
}
/**
* Checks that the component comp can be added to this container
* Checks : index in bounds of container's size,
* comp is not one of this container's parents,
* and comp is not a window.
* Comp and container must be on the same GraphicsDevice.
* if comp is container, all sub-components must be on
* same GraphicsDevice.
*
* @since 1.5
*/
throw new IllegalArgumentException("illegal component position");
}
throw new IllegalArgumentException("illegal component position " +
}
}
if (thisTopLevel != compTopLevel) {
throw new IllegalArgumentException("component and container should be in the same top-level window");
}
}
}
/**
* Removes component comp from this container without making unneccessary changes
* and generating unneccessary events. This function intended to perform optimized
* remove, for example, if newParent and current parent are the same it just changes
* index without calling removeNotify.
* Note: Should be called while holding treeLock
* Returns whether removeNotify was invoked
* @since: 1.5
*/
if (needRemoveNotify) {
comp.removeNotify();
}
if (newParent != this) {
}
if (needRemoveNotify) {
}
} else {
// We should remove component and then
// add it by the newIndex without newIndex decrement if even we shift components to the left
// after remove. Consult the rules below:
// 2->4: 012345 -> 013425, 2->5: 012345 -> 013452
// 4->2: 012345 -> 014235
}
if (containerListener != null ||
ContainerEvent e = new ContainerEvent(this,
comp);
dispatchEvent(e);
}
this, HierarchyEvent.PARENT_CHANGED,
}
}
return needRemoveNotify;
}
/**
* Checks whether this container can contain component which is focus owner.
* Verifies that container is enable and showing, and if it is focus cycle root
* its FTP allows component to be focus owner
* @since 1.5
*/
if (!(isEnabled() && isDisplayable()
&& isVisible() && isFocusable()))
{
return false;
}
if (isFocusCycleRoot()) {
if (policy instanceof DefaultFocusTraversalPolicy) {
return false;
}
}
}
synchronized(getTreeLock()) {
}
}
return true;
}
/**
* Checks whether or not this container has heavyweight children.
* Note: Should be called while holding tree lock
* @return true if there is at least one heavyweight children in a container, false otherwise
* @since 1.5
*/
final boolean hasHeavyweightDescendants() {
return numOfHWComponents > 0;
}
/**
* Checks whether or not this container has lightweight children.
* Note: Should be called while holding tree lock
* @return true if there is at least one lightweight children in a container, false otherwise
* @since 1.7
*/
final boolean hasLightweightDescendants() {
return numOfLWComponents > 0;
}
/**
* Returns closest heavyweight component to this container. If this container is heavyweight
* returns this.
* @since 1.5
*/
return this;
} else {
return getNativeContainer();
}
}
/**
* Detects whether or not remove from current parent and adding to new parent requires call of
* removeNotify on the component. Since removeNotify destroys native window this might (not)
* be required. For example, if new container and old containers are the same we don't need to
* destroy native window.
* @since: 1.5
*/
private static boolean isRemoveNotifyNeeded(Component comp, Container oldContainer, Container newContainer) {
return false;
}
return false;
}
// Component has peer but new Container doesn't - call removeNotify
return true;
}
// If component is lightweight non-Container or lightweight Container with all but heavyweight
// children there is no need to call remove notify
if (comp.isLightweight()) {
return false;
}
}
// If this point is reached, then the comp is either a HW or a LW container with HW descendants.
// All three components have peers, check for peer change
if (newNativeContainer != oldNativeContainer) {
// Native containers change - check whether or not current platform supports
// changing of widget hierarchy on native level without recreation.
// The current implementation forbids reparenting of LW containers with HW descendants
// into another native container w/o destroying the peers. Actually such an operation
// is quite rare. If we ever need to save the peers, we'll have to slightly change the
// addDelicately() method in order to handle such LW containers recursively, reparenting
// each HW descendant independently.
} else {
return false;
}
}
/**
* Moves the specified component to the specified z-order index in
* the container. The z-order determines the order that components
* are painted; the component with the highest z-order paints first
* and the component with the lowest z-order paints last.
* Where components overlap, the component with the lower
* z-order paints over the component with the higher z-order.
* <p>
* If the component is a child of some other container, it is
* removed from that container before being added to this container.
* The important difference between this method and
* <code>java.awt.Container.add(Component, int)</code> is that this method
* doesn't call <code>removeNotify</code> on the component while
* removing it from its previous container unless necessary and when
* allowed by the underlying native windowing system. This way, if the
* component has the keyboard focus, it maintains the focus when
* moved to the new position.
* <p>
* This property is guaranteed to apply only to lightweight
* non-<code>Container</code> components.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy.
* <p>
* <b>Note</b>: Not all platforms support changing the z-order of
* heavyweight components from one container into another without
* the call to <code>removeNotify</code>. There is no way to detect
* whether a platform supports this, so developers shouldn't make
* any assumptions.
*
* @param comp the component to be moved
* @param index the position in the container's list to
* insert the component, where <code>getComponentCount()</code>
* appends to the end
* @exception NullPointerException if <code>comp</code> is
* <code>null</code>
* @exception IllegalArgumentException if <code>comp</code> is one of the
* container's parents
* @exception IllegalArgumentException if <code>index</code> is not in
* the range <code>[0, getComponentCount()]</code> for moving
* between containers, or not in the range
* <code>[0, getComponentCount()-1]</code> for moving inside
* a container
* @exception IllegalArgumentException if adding a container to itself
* @exception IllegalArgumentException if adding a <code>Window</code>
* to a container
* @see #getComponentZOrder(java.awt.Component)
* @see #invalidate
* @since 1.5
*/
synchronized (getTreeLock()) {
// Store parent because remove will clear it
return;
}
// If the oldZindex == -1, the component gets inserted,
// rather than it changes its z-order.
// The new 'index' cannot be == -1.
// It gets checked at the checkAdding() method.
// Therefore both oldZIndex and index denote
// some existing positions at this point and
// this is actually a Z-order changing.
}
}
}
/**
* Traverses the tree of components and reparents children heavyweight component
* to new heavyweight parent.
* @since 1.5
*/
if (comp.isLightweight()) {
// If components is lightweight check if it is container
// If it is container it might contain heavyweight children we need to reparent
}
} else {
// Q: Need to update NativeInLightFixer?
}
}
}
/**
* Reparents child component peer to this container peer.
* Container must be heavyweight.
* @since 1.5
*/
return;
}
if (comp.isLightweight()) {
// If component is lightweight container we need to reparent all its explicit heavyweight children
// Traverse component's tree till depth-first until encountering heavyweight component
}
} else {
}
}
/**
* Adds component to this container. Tries to minimize side effects of this adding -
* doesn't call remove notify if it is not required.
* @since 1.5
*/
// Check if moving between containers
if (curParent != this) {
//index == -1 means add to the end.
if (index == -1) {
} else {
}
} else {
}
}
} else { // Both container and child have peers, it means child peer should be reparented.
// In both cases we need to reparent native widgets.
if (oldNativeContainer != newNativeContainer) {
// Native container changed - need to reparent native widgets
}
comp.updateZOrder();
// If component is heavyweight and one of the containers is lightweight
// the location of the component should be fixed.
}
}
}
if (curParent != this) {
/* Notify the layout manager of the added component. */
if (layoutMgr instanceof LayoutManager2) {
} else {
}
}
if (containerListener != null ||
ContainerEvent e = new ContainerEvent(this,
comp);
dispatchEvent(e);
}
this, HierarchyEvent.PARENT_CHANGED,
// If component is focus owner or parent container of focus owner check that after reparenting
// focus owner moved out if new container prohibit this kind of focus owner.
}
}
} else {
this, HierarchyEvent.HIERARCHY_CHANGED,
}
}
}
/**
* Returns the z-order index of the component inside the container.
* The higher a component is in the z-order hierarchy, the lower
* its index. The component with the lowest z-order index is
* painted last, above all other child components.
*
* @param comp the component being queried
* @return the z-order index of the component; otherwise
* returns -1 if the component is <code>null</code>
* or doesn't belong to the container
* @see #setComponentZOrder(java.awt.Component, int)
* @since 1.5
*/
return -1;
}
synchronized(getTreeLock()) {
// Quick check - container should be immediate parent of the component
return -1;
}
}
}
/**
* Adds the specified component to the end of this container.
* Also notifies the layout manager to add the component to
* this container's layout using the specified constraints object.
* This is a convenience method for {@link #addImpl}.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
*
* @param comp the component to be added
* @param constraints an object expressing
* layout contraints for this component
* @exception NullPointerException if {@code comp} is {@code null}
* @see #addImpl
* @see #invalidate
* @see #validate
* @see javax.swing.JComponent#revalidate()
* @see LayoutManager
* @since JDK1.1
*/
}
/**
* Adds the specified component to this container with the specified
* constraints at the specified index. Also notifies the layout
* manager to add the component to the this container's layout using
* the specified constraints object.
* This is a convenience method for {@link #addImpl}.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
*
* @param comp the component to be added
* @param constraints an object expressing layout contraints for this
* @param index the position in the container's list at which to insert
* the component; <code>-1</code> means insert at the end
* component
* @exception NullPointerException if {@code comp} is {@code null}
* @exception IllegalArgumentException if {@code index} is invalid (see
* {@link #addImpl} for details)
* @see #addImpl
* @see #invalidate
* @see #validate
* @see javax.swing.JComponent#revalidate()
* @see #remove
* @see LayoutManager
*/
}
/**
* Adds the specified component to this container at the specified
* index. This method also notifies the layout manager to add
* the component to this container's layout using the specified
* constraints object via the <code>addLayoutComponent</code>
* method.
* <p>
* The constraints are
* defined by the particular layout manager being used. For
* example, the <code>BorderLayout</code> class defines five
* constraints: <code>BorderLayout.NORTH</code>,
* <code>BorderLayout.SOUTH</code>, <code>BorderLayout.EAST</code>,
* <code>BorderLayout.WEST</code>, and <code>BorderLayout.CENTER</code>.
* <p>
* The <code>GridBagLayout</code> class requires a
* <code>GridBagConstraints</code> object. Failure to pass
* the correct type of constraints object results in an
* <code>IllegalArgumentException</code>.
* <p>
* If the current layout manager implements {@code LayoutManager2}, then
* {@link LayoutManager2#addLayoutComponent(Component,Object)} is invoked on
* it. If the current layout manager does not implement
* {@code LayoutManager2}, and constraints is a {@code String}, then
* {@link LayoutManager#addLayoutComponent(String,Component)} is invoked on it.
* <p>
* If the component is not an ancestor of this container and has a non-null
* parent, it is removed from its current parent before it is added to this
* container.
* <p>
* This is the method to override if a program needs to track
* every add request to a container as all other add methods defer
* to this one. An overriding method should
* usually include a call to the superclass's version of the method:
* <p>
* <blockquote>
* <code>super.addImpl(comp, constraints, index)</code>
* </blockquote>
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* display the added component.
*
* @param comp the component to be added
* @param constraints an object expressing layout constraints
* for this component
* @param index the position in the container's list at which to
* insert the component, where <code>-1</code>
* means append to the end
* @exception IllegalArgumentException if {@code index} is invalid;
* if {@code comp} is a child of this container, the valid
* range is {@code [-1, getComponentCount()-1]}; if component is
* not a child of this container, the valid range is
* {@code [-1, getComponentCount()]}
*
* @exception IllegalArgumentException if {@code comp} is an ancestor of
* this container
* @exception IllegalArgumentException if adding a window to a container
* @exception NullPointerException if {@code comp} is {@code null}
* @see #add(Component)
* @see #add(Component, int)
* @see #add(Component, java.lang.Object)
* @see #invalidate
* @see LayoutManager
* @see LayoutManager2
* @since JDK1.1
*/
synchronized (getTreeLock()) {
/* Check for correct arguments: index in bounds,
* comp cannot be one of this container's parents,
* and comp cannot be a window.
* comp and container must be on the same GraphicsDevice.
* if comp is container, all sub-components must be on
* same GraphicsDevice.
*/
throw new IllegalArgumentException(
"illegal component position");
}
}
/* Reparent the component and tidy up the tree's state. */
throw new IllegalArgumentException("illegal component position");
}
}
//index == -1 means add to the end.
if (index == -1) {
} else {
}
}
/* Notify the layout manager of the added component. */
if (layoutMgr instanceof LayoutManager2) {
} else if (constraints instanceof String) {
}
}
if (containerListener != null ||
ContainerEvent e = new ContainerEvent(this,
comp);
dispatchEvent(e);
}
this, HierarchyEvent.PARENT_CHANGED,
}
}
}
}
}
return ret;
}
/**
* Checks that all Components that this Container contains are on
* the same GraphicsDevice as this Container. If not, throws an
* IllegalArgumentException.
*/
}
}
}
/**
* Removes the component, specified by <code>index</code>,
* from this container.
* This method also notifies the layout manager to remove the
* component from this container's layout via the
* <code>removeLayoutComponent</code> method.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* reflect the changes.
*
*
* @param index the index of the component to be removed
* @throws ArrayIndexOutOfBoundsException if {@code index} is not in
* range {@code [0, getComponentCount()-1]}
* @see #add
* @see #invalidate
* @see #validate
* @see #getComponentCount
* @since JDK1.1
*/
synchronized (getTreeLock()) {
throw new ArrayIndexOutOfBoundsException(index);
}
comp.removeNotify();
}
}
if (containerListener != null ||
ContainerEvent e = new ContainerEvent(this,
comp);
dispatchEvent(e);
}
this, HierarchyEvent.PARENT_CHANGED,
}
}
}
/**
* Removes the specified component from this container.
* This method also notifies the layout manager to remove the
* component from this container's layout via the
* <code>removeLayoutComponent</code> method.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* reflect the changes.
*
* @param comp the component to be removed
* @throws NullPointerException if {@code comp} is {@code null}
* @see #add
* @see #invalidate
* @see #validate
* @see #remove(int)
*/
synchronized (getTreeLock()) {
if (index >= 0) {
}
}
}
}
/**
* Removes all the components from this container.
* This method also notifies the layout manager to remove the
* components from this container's layout via the
* <code>removeLayoutComponent</code> method.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy. If the container has already been
* displayed, the hierarchy must be validated thereafter in order to
* reflect the changes.
*
* @see #add
* @see #remove
* @see #invalidate
*/
public void removeAll() {
synchronized (getTreeLock()) {
comp.removeNotify();
}
}
if (containerListener != null ||
ContainerEvent e = new ContainerEvent(this,
comp);
dispatchEvent(e);
}
comp, this,
}
}
}
}
// Should only be called while holding tree lock
// Verify listeningChildren is correct
int sum = 0;
}
if (listeningChildren != sum) {
}
}
return listeningChildren + superListening;
// Verify listeningBoundsChildren is correct
int sum = 0;
}
if (listeningBoundsChildren != sum) {
}
}
return listeningBoundsChildren + superListening;
} else {
// assert false;
}
return superListening;
}
}
// Should only be called while holding tree lock
if (!toAssert) {
}
}
if (num == 0)
return;
listeningChildren += num;
}
}
}
// Should only be called while holding tree lock
if (num == 0)
return;
descendantsCount += num;
}
// Should only be called while holding tree lock
}
}
// Should only be called while holding tree lock
int countHierarchyMembers() {
// Verify descendantsCount is correct
int sum = 0;
}
if (descendantsCount != sum) {
}
}
return descendantsCount + 1;
}
if (enabledOnToolkit) {
return descendantsCount;
}
switch (id) {
return listeningChildren;
case HierarchyEvent.ANCESTOR_MOVED:
return listeningBoundsChildren;
default:
return 0;
}
}
{
}
return listeners +
}
boolean enabledOnToolkit)
{
return;
}
}
}
/**
* Gets the layout manager for this container.
* @see #doLayout
* @see #setLayout
*/
return layoutMgr;
}
/**
* Sets the layout manager for this container.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy.
*
* @param mgr the specified layout manager
* @see #doLayout
* @see #getLayout
* @see #invalidate
*/
}
/**
* Causes this container to lay out its components. Most programs
* should not call this method directly, but should invoke
* the <code>validate</code> method instead.
* @see LayoutManager#layoutContainer
* @see #setLayout
* @see #validate
* @since JDK1.1
*/
public void doLayout() {
layout();
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>doLayout()</code>.
*/
public void layout() {
layoutMgr.layoutContainer(this);
}
}
/**
* Indicates if this container is a <i>validate root</i>.
* <p>
* Layout-related changes, such as bounds of the validate root descendants,
* do not affect the layout of the validate root parent. This peculiarity
* enables the {@code invalidate()} method to stop invalidating the
* component hierarchy when the method encounters a validate root. However,
* to preserve backward compatibility this new optimized behavior is
* enabled only when the {@code java.awt.smartInvalidate} system property
* value is set to {@code true}.
* <p>
* If a component hierarchy contains validate roots and the new optimized
* {@code invalidate()} behavior is enabled, the {@code validate()} method
* must be invoked on the validate root of a previously invalidated
* component to restore the validity of the hierarchy later. Otherwise,
* calling the {@code validate()} method on the top-level container (such
* as a {@code Frame} object) should be used to restore the validity of the
* component hierarchy.
* <p>
* The {@code Window} class and the {@code Applet} class are the validate
* roots in AWT. Swing introduces more validate roots.
*
* @return whether this container is a validate root
* @see #invalidate
* @see java.awt.Component#invalidate
* @see javax.swing.JComponent#isValidateRoot
* @see javax.swing.JComponent#revalidate
* @since 1.7
*/
public boolean isValidateRoot() {
return false;
}
private static final boolean isJavaAwtSmartInvalidate;
static {
// Don't lazy-read because every app uses invalidate()
new GetBooleanAction("java.awt.smartInvalidate"));
}
/**
* Invalidates the parent of the container unless the container
* is a validate root.
*/
void invalidateParent() {
if (!isJavaAwtSmartInvalidate || !isValidateRoot()) {
super.invalidateParent();
}
}
/**
* Invalidates the container.
* <p>
* If the {@code LayoutManager} installed on this container is an instance
* of the {@code LayoutManager2} interface, then
* the {@link LayoutManager2#invalidateLayout(Container)} method is invoked
* on it supplying this {@code Container} as the argument.
* <p>
* Afterwards this method marks this container invalid, and invalidates its
* ancestors. See the {@link Component#invalidate} method for more details.
*
* @see #validate
* @see #layout
* @see LayoutManager2
*/
public void invalidate() {
if (layoutMgr instanceof LayoutManager2) {
lm.invalidateLayout(this);
}
super.invalidate();
}
/**
* Validates this container and all of its subcomponents.
* <p>
* Validating a container means laying out its subcomponents.
* Layout-related changes, such as setting the bounds of a component, or
* adding a component to the container, invalidate the container
* automatically. Note that the ancestors of the container may be
* invalidated also (see {@link Component#invalidate} for details.)
* Therefore, to restore the validity of the hierarchy, the {@code
* validate()} method should be invoked on the top-most invalid
* container of the hierarchy.
* <p>
* Validating the container may be a quite time-consuming operation. For
* performance reasons a developer may postpone the validation of the
* hierarchy till a set of layout-related operations completes, e.g. after
* adding all the children to the container.
* <p>
* If this {@code Container} is not valid, this method invokes
* the {@code validateTree} method and marks this {@code Container}
* as valid. Otherwise, no action is performed.
*
* @see #add(java.awt.Component)
* @see #invalidate
* @see Container#isValidateRoot
* @see javax.swing.JComponent#revalidate()
* @see #validateTree
*/
public void validate() {
boolean updateCur = false;
synchronized (getTreeLock()) {
if ((!isValid() || descendUnconditionallyWhenValidating)
{
ContainerPeer p = null;
if (peer instanceof ContainerPeer) {
p = (ContainerPeer) peer;
}
if (p != null) {
p.beginValidate();
}
validateTree();
if (p != null) {
p.endValidate();
// Avoid updating cursor if this is an internal call.
// See validateUnconditionally() for details.
}
}
}
}
if (updateCur) {
}
}
/**
* Indicates whether valid containers should also traverse their
* children and call the validateTree() method on them.
*
* Synchronization: TreeLock.
*
* The field is allowed to be static as long as the TreeLock itself is
* static.
*
* @see #validateUnconditionally()
*/
private static boolean descendUnconditionallyWhenValidating = false;
/**
* Unconditionally validate the component hierarchy.
*/
final void validateUnconditionally() {
boolean updateCur = false;
synchronized (getTreeLock()) {
validate();
if (peer instanceof ContainerPeer) {
}
descendUnconditionallyWhenValidating = false;
}
if (updateCur) {
}
}
/**
* Recursively descends the container tree and recomputes the
* layout for any subtrees marked as needing it (those marked as
* invalid). Synchronization should be provided by the method
* that calls this one: <code>validate</code>.
*
* @see #doLayout
* @see #validate
*/
protected void validateTree() {
if (!isValid() || descendUnconditionallyWhenValidating) {
if (peer instanceof ContainerPeer) {
}
if (!isValid()) {
doLayout();
}
{
} else {
}
}
if (peer instanceof ContainerPeer) {
}
}
super.validate();
}
/**
* Recursively descends the container tree and invalidates all
* contained components.
*/
void invalidateTree() {
synchronized (getTreeLock()) {
}
else {
}
}
}
}
/**
* Sets the font of this container.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy.
*
* @param f The font to become this container's font.
* @see Component#getFont
* @see #invalidate
* @since JDK1.0
*/
boolean shouldinvalidate = false;
super.setFont(f);
}
}
/**
* Returns the preferred size of this container. If the preferred size has
* not been set explicitly by {@link Component#setPreferredSize(Dimension)}
* and this {@code Container} has a {@code non-null} {@link LayoutManager},
* then {@link LayoutManager#preferredLayoutSize(Container)}
* is used to calculate the preferred size.
*
* <p>Note: some implementations may cache the value returned from the
* {@code LayoutManager}. Implementations that cache need not invoke
* {@code preferredLayoutSize} on the {@code LayoutManager} every time
* this method is invoked, rather the {@code LayoutManager} will only
* be queried after the {@code Container} becomes invalid.
*
* @return an instance of <code>Dimension</code> that represents
* the preferred size of this container.
* @see #getMinimumSize
* @see #getMaximumSize
* @see #getLayout
* @see LayoutManager#preferredLayoutSize(Container)
* @see Component#getPreferredSize
*/
return preferredSize();
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>getPreferredSize()</code>.
*/
/* Avoid grabbing the lock if a reasonable cached size value
* is available.
*/
synchronized (getTreeLock()) {
layoutMgr.preferredLayoutSize(this) :
super.preferredSize();
}
}
}
else{
return dim;
}
}
/**
* Returns the minimum size of this container. If the minimum size has
* not been set explicitly by {@link Component#setMinimumSize(Dimension)}
* and this {@code Container} has a {@code non-null} {@link LayoutManager},
* then {@link LayoutManager#minimumLayoutSize(Container)}
* is used to calculate the minimum size.
*
* <p>Note: some implementations may cache the value returned from the
* {@code LayoutManager}. Implementations that cache need not invoke
* {@code minimumLayoutSize} on the {@code LayoutManager} every time
* this method is invoked, rather the {@code LayoutManager} will only
* be queried after the {@code Container} becomes invalid.
*
* @return an instance of <code>Dimension</code> that represents
* the minimum size of this container.
* @see #getPreferredSize
* @see #getMaximumSize
* @see #getLayout
* @see LayoutManager#minimumLayoutSize(Container)
* @see Component#getMinimumSize
* @since JDK1.1
*/
return minimumSize();
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>getMinimumSize()</code>.
*/
/* Avoid grabbing the lock if a reasonable cached size value
* is available.
*/
synchronized (getTreeLock()) {
layoutMgr.minimumLayoutSize(this) :
super.minimumSize();
}
}
}
else{
return dim;
}
}
/**
* Returns the maximum size of this container. If the maximum size has
* not been set explicitly by {@link Component#setMaximumSize(Dimension)}
* and the {@link LayoutManager} installed on this {@code Container}
* is an instance of {@link LayoutManager2}, then
* {@link LayoutManager2#maximumLayoutSize(Container)}
* is used to calculate the maximum size.
*
* <p>Note: some implementations may cache the value returned from the
* {@code LayoutManager2}. Implementations that cache need not invoke
* {@code maximumLayoutSize} on the {@code LayoutManager2} every time
* this method is invoked, rather the {@code LayoutManager2} will only
* be queried after the {@code Container} becomes invalid.
*
* @return an instance of <code>Dimension</code> that represents
* the maximum size of this container.
* @see #getPreferredSize
* @see #getMinimumSize
* @see #getLayout
* @see LayoutManager2#maximumLayoutSize(Container)
* @see Component#getMaximumSize
*/
/* Avoid grabbing the lock if a reasonable cached size value
* is available.
*/
synchronized (getTreeLock()) {
if (layoutMgr instanceof LayoutManager2) {
} else {
maxSize = super.getMaximumSize();
}
}
}
}
else{
return dim;
}
}
/**
* Returns the alignment along the x axis. This specifies how
* the component would like to be aligned relative to other
* components. The value should be a number between 0 and 1
* where 0 represents alignment along the origin, 1 is aligned
* the furthest away from the origin, 0.5 is centered, etc.
*/
public float getAlignmentX() {
float xAlign;
if (layoutMgr instanceof LayoutManager2) {
synchronized (getTreeLock()) {
}
} else {
xAlign = super.getAlignmentX();
}
return xAlign;
}
/**
* Returns the alignment along the y axis. This specifies how
* the component would like to be aligned relative to other
* components. The value should be a number between 0 and 1
* where 0 represents alignment along the origin, 1 is aligned
* the furthest away from the origin, 0.5 is centered, etc.
*/
public float getAlignmentY() {
float yAlign;
if (layoutMgr instanceof LayoutManager2) {
synchronized (getTreeLock()) {
}
} else {
yAlign = super.getAlignmentY();
}
return yAlign;
}
/**
* Paints the container. This forwards the paint to any lightweight
* components that are children of this container. If this method is
* reimplemented, super.paint(g) should be called so that lightweight
* components are properly rendered. If a child component is entirely
* clipped by the current clipping setting in g, paint() will not be
* forwarded to that child.
*
* @param g the specified Graphics window
* @see Component#update(Graphics)
*/
if (isShowing()) {
synchronized (getObjectLock()) {
if (printing) {
return;
}
}
}
// The container is showing on screen and
// this paint() is not called from print().
// Paint self and forward the paint to lightweight subcomponents.
// super.paint(); -- Don't bother, since it's a NOP.
}
}
/**
* Updates the container. This forwards the update to any lightweight
* components that are children of this container. If this method is
* reimplemented, super.update(g) should be called so that lightweight
* components are properly rendered. If a child component is entirely
* clipped by the current clipping setting in g, update() will not be
* forwarded to that child.
*
* @param g the specified Graphics window
* @see Component#update(Graphics)
*/
if (isShowing()) {
if (! (peer instanceof LightweightPeer)) {
}
paint(g);
}
}
/**
* Prints the container. This forwards the print to any lightweight
* components that are children of this container. If this method is
* reimplemented, super.print(g) should be called so that lightweight
* components are properly rendered. If a child component is entirely
* clipped by the current clipping setting in g, print() will not be
* forwarded to that child.
*
* @param g the specified Graphics window
* @see Component#update(Graphics)
*/
if (isShowing()) {
try {
synchronized (getObjectLock()) {
if (printingThreads == null) {
printingThreads = new HashSet();
}
printingThreads.add(t);
printing = true;
}
super.print(g); // By default, Component.print() calls paint()
} finally {
synchronized (getObjectLock()) {
}
}
}
}
/**
* Paints each of the components in this container.
* @param g the graphics context.
* @see Component#paint
* @see Component#paintAll
*/
if (isShowing()) {
}
}
/**
* Simulates the peer callbacks into java.awt for printing of
* lightweight Containers.
* @param g the graphics context to use for printing.
* @see Component#printAll
* @see #printComponents
*/
super.lightweightPaint(g);
}
/**
* Prints all the heavyweight subcomponents.
*/
if (isShowing()) {
}
}
/**
* Prints each of the components in this container.
* @param g the graphics context.
* @see Component#print
* @see Component#printAll
*/
if (isShowing()) {
}
}
/**
* Simulates the peer callbacks into java.awt for printing of
* lightweight Containers.
* @param g the graphics context to use for printing.
* @see Component#printAll
* @see #printComponents
*/
super.lightweightPrint(g);
}
/**
* Prints all the heavyweight subcomponents.
*/
if (isShowing()) {
}
}
/**
* Adds the specified container listener to receive container events
* from this container.
* If l is null, no exception is thrown and no action is performed.
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
* >AWT Threading Issues</a> for details on AWT's threading model.
*
* @param l the container listener
*
* @see #removeContainerListener
* @see #getContainerListeners
*/
if (l == null) {
return;
}
newEventsOnly = true;
}
/**
* Removes the specified container listener so it no longer receives
* container events from this container.
* If l is null, no exception is thrown and no action is performed.
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
* >AWT Threading Issues</a> for details on AWT's threading model.
*
* @param l the container listener
*
* @see #addContainerListener
* @see #getContainerListeners
*/
if (l == null) {
return;
}
}
/**
* Returns an array of all the container listeners
* registered on this container.
*
* @return all of this container's <code>ContainerListener</code>s
* or an empty array if no container
* listeners are currently registered
*
* @see #addContainerListener
* @see #removeContainerListener
* @since 1.4
*/
}
/**
* Returns an array of all the objects currently registered
* as <code><em>Foo</em>Listener</code>s
* upon this <code>Container</code>.
* <code><em>Foo</em>Listener</code>s are registered using the
* <code>add<em>Foo</em>Listener</code> method.
*
* <p>
* You can specify the <code>listenerType</code> argument
* with a class literal, such as
* <code><em>Foo</em>Listener.class</code>.
* For example, you can query a
* <code>Container</code> <code>c</code>
* for its container listeners with the following code:
*
* <pre>ContainerListener[] cls = (ContainerListener[])(c.getListeners(ContainerListener.class));</pre>
*
* If no such listeners exist, this method returns an empty array.
*
* @param listenerType the type of listeners requested; this parameter
* should specify an interface that descends from
* <code>java.util.EventListener</code>
* @return an array of all objects registered as
* <code><em>Foo</em>Listener</code>s on this container,
* or an empty array if no such listeners have been added
* @exception ClassCastException if <code>listenerType</code>
* doesn't specify a class or interface that implements
* <code>java.util.EventListener</code>
* @exception NullPointerException if {@code listenerType} is {@code null}
*
* @see #getContainerListeners
*
* @since 1.3
*/
EventListener l = null;
if (listenerType == ContainerListener.class) {
l = containerListener;
} else {
return super.getListeners(listenerType);
}
}
// REMIND: remove when filtering is done at lower level
containerListener != null) {
return true;
}
return false;
}
return super.eventEnabled(e);
}
/**
* Processes events on this container. If the event is a
* <code>ContainerEvent</code>, it invokes the
* <code>processContainerEvent</code> method, else it invokes
* its superclass's <code>processEvent</code>.
* <p>Note that if the event parameter is <code>null</code>
* the behavior is unspecified and may result in an
* exception.
*
* @param e the event
*/
if (e instanceof ContainerEvent) {
return;
}
super.processEvent(e);
}
/**
* Processes container events occurring on this container by
* dispatching them to any registered ContainerListener objects.
* NOTE: This method will not be called unless container events
* are enabled for this component; this happens when one of the
* following occurs:
* <ul>
* <li>A ContainerListener object is registered via
* <code>addContainerListener</code>
* <li>Container events are enabled via <code>enableEvents</code>
* </ul>
* <p>Note that if the event parameter is <code>null</code>
* the behavior is unspecified and may result in an
* exception.
*
* @param e the container event
* @see Component#enableEvents
*/
switch(e.getID()) {
break;
break;
}
}
}
/*
* Dispatches an event to this component or one of its sub components.
* Create ANCESTOR_RESIZED and ANCESTOR_MOVED events in response to
* COMPONENT_RESIZED and COMPONENT_MOVED events. We have to do this
* here instead of in processComponentEvent because ComponentEvents
* may not be enabled for this Container.
* @param e the event
*/
// event was sent to a lightweight component. The
// native-produced event sent to the native container
// must be properly disposed of by the peer, so it
// gets forwarded. If the native host has been removed
// as a result of the sending the lightweight event,
// the peer reference will be null.
e.consume();
peer.handleEvent(e);
}
return;
}
super.dispatchEventImpl(e);
synchronized (getTreeLock()) {
switch (e.getID()) {
break;
break;
default:
break;
}
}
}
/*
* Dispatches an event to this component, without trying to forward
* it to any subcomponents
* @param e the event
*/
super.dispatchEventImpl(e);
}
/**
* Fetchs the top-most (deepest) lightweight component that is interested
* in receiving mouse events.
*/
return getMouseEventTarget(x, y, includeSelf,
}
/**
* Fetches the top-most (deepest) component to receive SunDropTargetEvents.
*/
return getMouseEventTarget(x, y, includeSelf,
}
/**
* A private version of getMouseEventTarget which has two additional
* controllable behaviors. This method searches for the top-most
* descendant of this container that contains the given coordinates
* and is accepted by the given filter. The search will be constrained to
* lightweight descendants if the last argument is <code>false</code>.
*
* @param filter EventTargetFilter instance to determine whether the
* given component is a valid target for this event.
* @param searchHeavyweights if <code>false</code>, the method
* will bypass heavyweight components during the search.
*/
boolean searchHeavyweights) {
if (searchHeavyweights) {
}
}
return comp;
}
/**
* A private version of getMouseEventTarget which has three additional
* controllable behaviors. This method searches for the top-most
* descendant of this container that contains the given coordinates
* and is accepted by the given filter. The search will be constrained to
* descendants of only lightweight children or only heavyweight children
* of this container depending on searchHeavyweightChildren. The search will
* be constrained to only lightweight descendants of the searched children
* of this container if searchHeavyweightDescendants is <code>false</code>.
*
* @param filter EventTargetFilter instance to determine whether the
* selected component is a valid target for this event.
* @param searchHeavyweightChildren if <code>true</code>, the method
* will bypass immediate lightweight children during the search.
* If <code>false</code>, the methods will bypass immediate
* heavyweight children during the search.
* @param searchHeavyweightDescendants if <code>false</code>, the method
* will bypass heavyweight descendants which are not immediate
* children during the search. If <code>true</code>, the method
* will traverse both lightweight and heavyweight descendants during
* the search.
*/
boolean searchHeavyweightChildren,
boolean searchHeavyweightDescendants) {
synchronized (getTreeLock()) {
// found a component that intersects the point, see if there
// is a deeper possibility.
x - child.x,
y - child.y,
return deeper;
}
} else {
// there isn't a deeper target, but this component
// is a target
return comp;
}
}
}
}
boolean isPeerOK;
boolean isMouseOverMe;
isMouseOverMe = contains(x,y);
// didn't find a child target, return this component if it's
// a possible target
return this;
}
// no possible target
return null;
}
}
static interface EventTargetFilter {
}
private MouseEventTargetFilter() {}
}
}
private DropTargetEventTargetFilter() {}
}
}
/**
* This is called by lightweight components that want the containing
* windowed parent to enable some kind of events on their behalf.
* This is needed for events that are normally only dispatched to
* windows to be accepted so that they can be forwarded downward to
* the lightweight component that has enabled them.
*/
if (peer instanceof LightweightPeer) {
// this container is lightweight.... continue sending it
// upward.
}
} else {
// This is a native container, so it needs to host
// one of it's children. If this function is called before
// a peer has been created we don't yet have a dispatcher
// because it has not yet been determined if this instance
// is lightweight.
if (dispatcher != null) {
}
}
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>dispatchEvent(AWTEvent e)</code>
*/
comp.deliverEvent(e);
} else {
postEvent(e);
}
}
/**
* Locates the component that contains the x,y position. The
* top-most child component is returned in the case where there
* is overlap in the components. This is determined by finding
* the component closest to the index 0 that claims to contain
* the given point via Component.contains(), except that Components
* which have native peers take precedence over those which do not
* (i.e., lightweight Components).
*
* @param x the <i>x</i> coordinate
* @param y the <i>y</i> coordinate
* @return null if the component does not contain the position.
* If there is no child component at the requested point and the
* point is within the bounds of the container the container itself
* is returned; otherwise the top-most child is returned.
* @see Component#contains
* @since JDK1.1
*/
return locate(x, y);
}
/**
* @deprecated As of JDK version 1.1,
* replaced by <code>getComponentAt(int, int)</code>.
*/
if (!contains(x, y)) {
return null;
}
synchronized (getTreeLock()) {
// Two passes: see comment in sun.awt.SunGraphicsCallback
return comp;
}
}
}
return comp;
}
}
}
}
return this;
}
/**
* Gets the component that contains the specified point.
* @param p the point.
* @return returns the component that contains the point,
* or <code>null</code> if the component does
* not contain the point.
* @see Component#contains
* @since JDK1.1
*/
return getComponentAt(p.x, p.y);
}
/**
* Returns the position of the mouse pointer in this <code>Container</code>'s
* coordinate space if the <code>Container</code> is under the mouse pointer,
* otherwise returns <code>null</code>.
* This method is similar to {@link Component#getMousePosition()} with the exception
* that it can take the <code>Container</code>'s children into account.
* If <code>allowChildren</code> is <code>false</code>, this method will return
* a non-null value only if the mouse pointer is above the <code>Container</code>
* directly, not above the part obscured by children.
* If <code>allowChildren</code> is <code>true</code>, this method returns
* a non-null value if the mouse pointer is above <code>Container</code> or any
* of its descendants.
*
* @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
* @param allowChildren true if children should be taken into account
* @see Component#getMousePosition
* @return mouse coordinates relative to this <code>Component</code>, or null
* @since 1.5
*/
if (GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
}
return MouseInfo.getPointerInfo();
}
}
);
synchronized (getTreeLock()) {
}
return null;
}
}
}
/**
* Locates the visible child component that contains the specified
* position. The top-most child component is returned in the case
* where there is overlap in the components. If the containing child
* component is a Container, this method will continue searching for
* the deepest nested child component. Components which are not
* visible are ignored during the search.<p>
*
* The findComponentAt method is different from getComponentAt in
* that getComponentAt only searches the Container's immediate
* children; if the containing component is a Container,
* findComponentAt will search that child to find a nested component.
*
* @param x the <i>x</i> coordinate
* @param y the <i>y</i> coordinate
* @return null if the component does not contain the position.
* If there is no child component at the requested point and the
* point is within the bounds of the container the container itself
* is returned.
* @see Component#contains
* @see #getComponentAt
* @since 1.2
*/
return findComponentAt(x, y, true);
}
/**
* Private version of findComponentAt which has a controllable
* behavior. Setting 'ignoreEnabled' to 'false' bypasses disabled
* Components during the search. This behavior is used by the
* lightweight cursor support in sun.awt.GlobalCursorManager.
* The cursor code calls this function directly via native code.
*
* The addition of this feature is temporary, pending the
* adoption of new, public API which exports this feature.
*/
synchronized (getTreeLock()) {
if (isRecursivelyVisible()){
return findComponentAtImpl(x, y, ignoreEnabled);
}
}
return null;
}
return null;
}
// Two passes: see comment in sun.awt.SunGraphicsCallback
y - comp.y,
} else {
}
{
return comp;
}
}
}
y - comp.y,
} else {
}
{
return comp;
}
}
}
return this;
}
/**
* Locates the visible child component that contains the specified
* point. The top-most child component is returned in the case
* where there is overlap in the components. If the containing child
* component is a Container, this method will continue searching for
* the deepest nested child component. Components which are not
* visible are ignored during the search.<p>
*
* The findComponentAt method is different from getComponentAt in
* that getComponentAt only searches the Container's immediate
* children; if the containing component is a Container,
* findComponentAt will search that child to find a nested component.
*
* @param p the point.
* @return null if the component does not contain the position.
* If there is no child component at the requested point and the
* point is within the bounds of the container the container itself
* is returned.
* @throws NullPointerException if {@code p} is {@code null}
* @see Component#contains
* @see #getComponentAt
* @since 1.2
*/
return findComponentAt(p.x, p.y);
}
/**
* Makes this Container displayable by connecting it to
* a native screen resource. Making a container displayable will
* cause all of its children to be made displayable.
* This method is called internally by the toolkit and should
* not be called directly by programs.
* @see Component#isDisplayable
* @see #removeNotify
*/
public void addNotify() {
synchronized (getTreeLock()) {
// addNotify() on the children may cause proxy event enabling
// on this instance, so we first call super.addNotify() and
// possibly create an lightweight event dispatcher before calling
// addNotify() on the children which may be lightweight.
super.addNotify();
if (! (peer instanceof LightweightPeer)) {
dispatcher = new LightweightDispatcher(this);
}
// We shouldn't use iterator because of the Swing menu
// implementation specifics:
// the menu is being assigned as a child to JLayeredPane
// instead of particular component so always affect
// collection of component if menu is becoming shown or hidden.
}
}
}
/**
* Makes this Container undisplayable by removing its connection
* to its native screen resource. Making a container undisplayable
* will cause all of its children to be made undisplayable.
* This method is called by the toolkit internally and should
* not be called directly by programs.
* @see Component#isDisplayable
* @see #addNotify
*/
public void removeNotify() {
synchronized (getTreeLock()) {
// We shouldn't use iterator because of the Swing menu
// implementation specifics:
// the menu is being assigned as a child to JLayeredPane
// instead of particular component so always affect
// collection of component if menu is becoming shown or hidden.
// Fix for 6607170.
// We want to suppress focus change on disposal
// of the focused component. But because of focus
// is asynchronous, we should suppress focus change
// on every component in case it receives native focus
// in the process of disposal.
comp.setAutoFocusTransferOnDisposal(false);
comp.removeNotify();
}
}
// If some of the children had focus before disposal then it still has.
// Auto-transfer focus to the next (or previous) component if auto-transfer
// is enabled.
if (!transferFocus(false)) {
transferFocusBackward(true);
}
}
if ( dispatcher != null ) {
dispatcher = null;
}
super.removeNotify();
}
}
/**
* Checks if the component is contained in the component hierarchy of
* this container.
* @param c the component
* @return <code>true</code> if it is an ancestor;
* <code>false</code> otherwise.
* @since JDK1.1
*/
Container p;
return false;
}
while (p != null) {
if (p == this) {
return true;
}
p = p.getParent();
}
return false;
}
/*
* The following code was added to support modal JInternalFrames
* Unfortunately this code has to be added here so that we can get access to
* some private AWT classes like SequencedEvent.
*
* The native container of the LW component has this field set
* to tell it that it should block Mouse events for all LW
* children except for the modal component.
*
* In the case of nested Modal components, we store the previous
* modal component in the new modal components value of modalComp;
*/
private void startLWModal() {
// Store the app context on which this component is being shown.
// Event dispatch thread of this app context will be sleeping until
// we wake it by any event from hideAndDisposeHandler().
// keep the KeyEvents from being dispatched
// until the focus has been transfered
Component predictedFocusOwner = (Component.isInstanceOf(this, "javax.swing.JInternalFrame")) ? ((javax.swing.JInternalFrame)(this)).getMostRecentFocusOwner() : null;
if (predictedFocusOwner != null) {
}
// We have two mechanisms for blocking: 1. If we're on the
// EventDispatchThread, start a new event pump. 2. If we're
// on any other thread, call wait() on the treelock.
final Container nativeContainer;
synchronized (getTreeLock()) {
nativeContainer.modalComp = this;
return;
}
else {
nativeContainer.modalComp = this;
}
}
public void run() {
new Conditional() {
public boolean evaluate() {
}
}, Container.this);
}
};
if (EventQueue.isDispatchThread()) {
if (currentSequencedEvent != null) {
}
} else {
synchronized (getTreeLock()) {
while ((windowClosingException == null) &&
{
try {
getTreeLock().wait();
} catch (InterruptedException e) {
break;
}
}
}
}
if (windowClosingException != null) {
throw windowClosingException;
}
if (predictedFocusOwner != null) {
}
}
private void stopLWModal() {
synchronized (getTreeLock()) {
if (modalAppContext != null) {
if(nativeContainer != null) {
return;
}
else {
}
}
// Wake up event dispatch thread on which the dialog was
// initially shown
new PeerEvent(this,
new WakingRunnable(),
}
getTreeLock().notifyAll();
}
}
public void run() {
}
}
/* End of JOptionPane support code */
/**
* Returns a string representing the state of this <code>Container</code>.
* This method is intended to be used only for debugging purposes, and the
* content and format of the returned string may vary between
* implementations. The returned string may be empty but may not be
* <code>null</code>.
*
* @return the parameter string of this container
*/
}
return str;
}
/**
* Prints a listing of this container to the specified output
* stream. The listing starts at the specified indentation.
* <p>
* The immediate children of the container are printed with
* an indentation of <code>indent+1</code>. The children
* of those children are printed at <code>indent+2</code>
* and so on.
*
* @param out a print stream
* @param indent the number of spaces to indent
* @throws NullPointerException if {@code out} is {@code null}
* @see Component#list(java.io.PrintStream, int)
* @since JDK1.0
*/
synchronized(getTreeLock()) {
}
}
}
}
/**
* Prints out a list, starting at the specified indentation,
* to the specified print writer.
* <p>
* The immediate children of the container are printed with
* an indentation of <code>indent+1</code>. The children
* of those children are printed at <code>indent+2</code>
* and so on.
*
* @param out a print writer
* @param indent the number of spaces to indent
* @throws NullPointerException if {@code out} is {@code null}
* @see Component#list(java.io.PrintWriter, int)
* @since JDK1.1
*/
synchronized(getTreeLock()) {
}
}
}
}
/**
* Sets the focus traversal keys for a given traversal operation for this
* Container.
* <p>
* The default values for a Container's focus traversal keys are
* implementation-dependent. Sun recommends that all implementations for a
* particular native platform use the same default values. The
* recommendations for Windows and Unix are listed below. These
* recommendations are used in the Sun AWT implementations.
*
* <table border=1 summary="Recommended default values for a Container's focus traversal keys">
* <tr>
* <th>Identifier</th>
* <th>Meaning</th>
* <th>Default</th>
* </tr>
* <tr>
* <td>KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS</td>
* <td>Normal forward keyboard traversal</td>
* <td>TAB on KEY_PRESSED, CTRL-TAB on KEY_PRESSED</td>
* </tr>
* <tr>
* <td>KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS</td>
* <td>Normal reverse keyboard traversal</td>
* <td>SHIFT-TAB on KEY_PRESSED, CTRL-SHIFT-TAB on KEY_PRESSED</td>
* </tr>
* <tr>
* <td>KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS</td>
* <td>Go up one focus traversal cycle</td>
* <td>none</td>
* </tr>
* <tr>
* <td>KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS<td>
* <td>Go down one focus traversal cycle</td>
* <td>none</td>
* </tr>
* </table>
*
* To disable a traversal key, use an empty Set; Collections.EMPTY_SET is
* recommended.
* <p>
* Using the AWTKeyStroke API, client code can specify on which of two
* specific KeyEvents, KEY_PRESSED or KEY_RELEASED, the focus traversal
* operation will occur. Regardless of which KeyEvent is specified,
* however, all KeyEvents related to the focus traversal key, including the
* associated KEY_TYPED event, will be consumed, and will not be dispatched
* to any Container. It is a runtime error to specify a KEY_TYPED event as
* mapping to a focus traversal operation, or to map the same event to
* multiple default focus traversal operations.
* <p>
* If a value of null is specified for the Set, this Container inherits the
* Set from its parent. If all ancestors of this Container have null
* specified for the Set, then the current KeyboardFocusManager's default
* Set is used.
*
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
* @param keystrokes the Set of AWTKeyStroke for the specified operation
* @see #getFocusTraversalKeys
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
* @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
* @throws IllegalArgumentException if id is not one of
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS, or if keystrokes
* contains null, or if any Object in keystrokes is not an
* AWTKeyStroke, or if any keystroke represents a KEY_TYPED event,
* or if any keystroke already maps to another focus traversal
* operation for this Container
* @since 1.4
* @beaninfo
* bound: true
*/
{
throw new IllegalArgumentException("invalid focus traversal key identifier");
}
// Don't call super.setFocusTraversalKey. The Component parameter check
// does not allow DOWN_CYCLE_TRAVERSAL_KEYS, but we do.
}
/**
* Returns the Set of focus traversal keys for a given traversal operation
* for this Container. (See
* <code>setFocusTraversalKeys</code> for a full description of each key.)
* <p>
* If a Set of traversal keys has not been explicitly defined for this
* Container, then this Container's parent's Set is returned. If no Set
* has been explicitly defined for any of this Container's ancestors, then
* the current KeyboardFocusManager's default Set is returned.
*
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
* @return the Set of AWTKeyStrokes for the specified operation. The Set
* will be unmodifiable, and may be empty. null will never be
* returned.
* @see #setFocusTraversalKeys
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
* @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
* @throws IllegalArgumentException if id is not one of
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
* @since 1.4
*/
throw new IllegalArgumentException("invalid focus traversal key identifier");
}
// Don't call super.getFocusTraversalKey. The Component parameter check
// does not allow DOWN_CYCLE_TRAVERSAL_KEY, but we do.
return getFocusTraversalKeys_NoIDCheck(id);
}
/**
* Returns whether the Set of focus traversal keys for the given focus
* traversal operation has been explicitly defined for this Container. If
* this method returns <code>false</code>, this Container is inheriting the
* Set from an ancestor, or from the current KeyboardFocusManager.
*
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
* @return <code>true</code> if the the Set of focus traversal keys for the
* given focus traversal operation has been explicitly defined for
* this Component; <code>false</code> otherwise.
* @throws IllegalArgumentException if id is not one of
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
* @since 1.4
*/
throw new IllegalArgumentException("invalid focus traversal key identifier");
}
}
/**
* Returns whether the specified Container is the focus cycle root of this
* Container's focus traversal cycle. Each focus traversal cycle has only
* a single focus cycle root and each Container which is not a focus cycle
* root belongs to only a single focus traversal cycle. Containers which
* are focus cycle roots belong to two cycles: one rooted at the Container
* itself, and one rooted at the Container's nearest focus-cycle-root
* ancestor. This method will return <code>true</code> for both such
* Containers in this case.
*
* @param container the Container to be tested
* @return <code>true</code> if the specified Container is a focus-cycle-
* root of this Container; <code>false</code> otherwise
* @see #isFocusCycleRoot()
* @since 1.4
*/
if (isFocusCycleRoot() && container == this) {
return true;
} else {
return super.isFocusCycleRoot(container);
}
}
// I potentially have two roots, myself and my root parent
// If I am the current root, then use me
// If none of my parents are roots, then use me
// If my root parent is the current root, then use my root parent
// If neither I nor my root parent is the current root, then
// use my root parent (a guess)
if (currentFocusCycleRoot == this) {
root = this;
} else {
root = this;
}
}
if (root != currentFocusCycleRoot) {
}
return root;
}
final boolean containsFocus() {
return isParentOf(focusOwner);
}
/**
* Check if this component is the child of this container or its children.
* Note: this function acquires treeLock
* Note: this function traverses children tree only in one Window.
* @param comp a component in test, must not be null
*/
synchronized(getTreeLock()) {
}
return (comp == this);
}
}
void clearMostRecentFocusOwnerOnHide() {
boolean reset = false;
synchronized (getTreeLock()) {
// This synchronized should always be the second in a pair
// (tree lock, KeyboardFocusManager.class)
synchronized(KeyboardFocusManager.class) {
}
}
}
}
if (reset) {
}
}
void clearCurrentFocusCycleRootOnHide() {
}
}
if (isFocusCycleRoot()) {
return findTraversalRoot();
}
return super.getTraversalRoot();
}
/**
* Sets the focus traversal policy that will manage keyboard traversal of
* this Container's children, if this Container is a focus cycle root. If
* the argument is null, this Container inherits its policy from its focus-
* cycle-root ancestor. If the argument is non-null, this policy will be
* inherited by all focus-cycle-root children that have no keyboard-
* traversal policy of their own (as will, recursively, their focus-cycle-
* root children).
* <p>
* If this Container is not a focus cycle root, the policy will be
* remembered, but will not be used or inherited by this or any other
* Containers until this Container is made a focus cycle root.
*
* @param policy the new focus traversal policy for this Container
* @see #getFocusTraversalPolicy
* @see #setFocusCycleRoot
* @see #isFocusCycleRoot
* @since 1.4
* @beaninfo
* bound: true
*/
synchronized (this) {
oldPolicy = this.focusTraversalPolicy;
this.focusTraversalPolicy = policy;
}
}
/**
* Returns the focus traversal policy that will manage keyboard traversal
* of this Container's children, or null if this Container is not a focus
* cycle root. If no traversal policy has been explicitly set for this
* Container, then this Container's focus-cycle-root ancestor's policy is
* returned.
*
* @return this Container's focus traversal policy, or null if this
* Container is not a focus cycle root.
* @see #setFocusTraversalPolicy
* @see #setFocusCycleRoot
* @see #isFocusCycleRoot
* @since 1.4
*/
if (!isFocusTraversalPolicyProvider() && !isFocusCycleRoot()) {
return null;
}
return policy;
}
if (rootAncestor != null) {
return rootAncestor.getFocusTraversalPolicy();
} else {
}
}
/**
* Returns whether the focus traversal policy has been explicitly set for
* this Container. If this method returns <code>false</code>, this
* Container will inherit its focus traversal policy from an ancestor.
*
* @return <code>true</code> if the focus traversal policy has been
* explicitly set for this Container; <code>false</code> otherwise.
* @since 1.4
*/
public boolean isFocusTraversalPolicySet() {
return (focusTraversalPolicy != null);
}
/**
* Sets whether this Container is the root of a focus traversal cycle. Once
* focus enters a traversal cycle, typically it cannot leave it via focus
* traversal unless one of the up- or down-cycle keys is pressed. Normal
* traversal is limited to this Container, and all of this Container's
* descendants that are not descendants of inferior focus cycle roots. Note
* that a FocusTraversalPolicy may bend these restrictions, however. For
* example, ContainerOrderFocusTraversalPolicy supports implicit down-cycle
* traversal.
* <p>
* The alternative way to specify the traversal order of this Container's
* children is to make this Container a
* <a href="doc-files/FocusSpec.html#FocusTraversalPolicyProviders">focus traversal policy provider</a>.
*
* @param focusCycleRoot indicates whether this Container is the root of a
* focus traversal cycle
* @see #isFocusCycleRoot()
* @see #setFocusTraversalPolicy
* @see #getFocusTraversalPolicy
* @see ContainerOrderFocusTraversalPolicy
* @see #setFocusTraversalPolicyProvider
* @since 1.4
* @beaninfo
* bound: true
*/
boolean oldFocusCycleRoot;
synchronized (this) {
oldFocusCycleRoot = this.focusCycleRoot;
this.focusCycleRoot = focusCycleRoot;
}
}
/**
* Returns whether this Container is the root of a focus traversal cycle.
* Once focus enters a traversal cycle, typically it cannot leave it via
* focus traversal unless one of the up- or down-cycle keys is pressed.
* Normal traversal is limited to this Container, and all of this
* Container's descendants that are not descendants of inferior focus
* cycle roots. Note that a FocusTraversalPolicy may bend these
* restrictions, however. For example, ContainerOrderFocusTraversalPolicy
* supports implicit down-cycle traversal.
*
* @return whether this Container is the root of a focus traversal cycle
* @see #setFocusCycleRoot
* @see #setFocusTraversalPolicy
* @see #getFocusTraversalPolicy
* @see ContainerOrderFocusTraversalPolicy
* @since 1.4
*/
public boolean isFocusCycleRoot() {
return focusCycleRoot;
}
/**
* Sets whether this container will be used to provide focus
* traversal policy. Container with this property as
* <code>true</code> will be used to acquire focus traversal policy
* instead of closest focus cycle root ancestor.
* @param provider indicates whether this container will be used to
* provide focus traversal policy
* @see #setFocusTraversalPolicy
* @see #getFocusTraversalPolicy
* @see #isFocusTraversalPolicyProvider
* @since 1.5
* @beaninfo
* bound: true
*/
boolean oldProvider;
synchronized(this) {
}
}
/**
* Returns whether this container provides focus traversal
* policy. If this property is set to <code>true</code> then when
* keyboard focus manager searches container hierarchy for focus
* traversal policy and encounters this container before any other
* container with this property as true or focus cycle roots then
* its focus traversal policy will be used instead of focus cycle
* root's policy.
* @see #setFocusTraversalPolicy
* @see #getFocusTraversalPolicy
* @see #setFocusCycleRoot
* @see #setFocusTraversalPolicyProvider
* @return <code>true</code> if this container provides focus traversal
* policy, <code>false</code> otherwise
* @since 1.5
* @beaninfo
* bound: true
*/
public final boolean isFocusTraversalPolicyProvider() {
return focusTraversalPolicyProvider;
}
/**
* Transfers the focus down one focus traversal cycle. If this Container is
* a focus cycle root, then the focus owner is set to this Container's
* default Component to focus, and the current focus cycle root is set to
* this Container. If this Container is not a focus cycle root, then no
* focus traversal operation occurs.
*
* @see Component#requestFocus()
* @see #isFocusCycleRoot
* @see #setFocusCycleRoot
* @since 1.4
*/
public void transferFocusDownCycle() {
if (isFocusCycleRoot()) {
getDefaultComponent(this);
}
}
}
}
}
}
}
boolean postsOldMouseEvents() {
return true;
}
/**
* Sets the <code>ComponentOrientation</code> property of this container
* and all components contained within it.
* <p>
* This method changes layout-related information, and therefore,
* invalidates the component hierarchy.
*
* @param o the new component orientation of this container and
* the components contained within it.
* @exception NullPointerException if <code>orientation</code> is null.
* @see Component#setComponentOrientation
* @see Component#getComponentOrientation
* @see #invalidate
* @since 1.4
*/
super.applyComponentOrientation(o);
synchronized (getTreeLock()) {
}
}
}
/**
* Adds a PropertyChangeListener to the listener list. The listener is
* registered for all bound properties of this class, including the
* following:
* <ul>
* <li>this Container's font ("font")</li>
* <li>this Container's background color ("background")</li>
* <li>this Container's foreground color ("foreground")</li>
* <li>this Container's focusability ("focusable")</li>
* <li>this Container's focus traversal keys enabled state
* ("focusTraversalKeysEnabled")</li>
* <li>this Container's Set of FORWARD_TRAVERSAL_KEYS
* ("forwardFocusTraversalKeys")</li>
* <li>this Container's Set of BACKWARD_TRAVERSAL_KEYS
* ("backwardFocusTraversalKeys")</li>
* <li>this Container's Set of UP_CYCLE_TRAVERSAL_KEYS
* ("upCycleFocusTraversalKeys")</li>
* <li>this Container's Set of DOWN_CYCLE_TRAVERSAL_KEYS
* ("downCycleFocusTraversalKeys")</li>
* <li>this Container's focus traversal policy ("focusTraversalPolicy")
* </li>
* <li>this Container's focus-cycle-root state ("focusCycleRoot")</li>
* </ul>
* Note that if this Container is inheriting a bound property, then no
* event will be fired in response to a change in the inherited property.
* <p>
* If listener is null, no exception is thrown and no action is performed.
*
* @param listener the PropertyChangeListener to be added
*
* @see Component#removePropertyChangeListener
* @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
*/
super.addPropertyChangeListener(listener);
}
/**
* Adds a PropertyChangeListener to the listener list for a specific
* property. The specified property may be user-defined, or one of the
* following defaults:
* <ul>
* <li>this Container's font ("font")</li>
* <li>this Container's background color ("background")</li>
* <li>this Container's foreground color ("foreground")</li>
* <li>this Container's focusability ("focusable")</li>
* <li>this Container's focus traversal keys enabled state
* ("focusTraversalKeysEnabled")</li>
* <li>this Container's Set of FORWARD_TRAVERSAL_KEYS
* ("forwardFocusTraversalKeys")</li>
* <li>this Container's Set of BACKWARD_TRAVERSAL_KEYS
* ("backwardFocusTraversalKeys")</li>
* <li>this Container's Set of UP_CYCLE_TRAVERSAL_KEYS
* ("upCycleFocusTraversalKeys")</li>
* <li>this Container's Set of DOWN_CYCLE_TRAVERSAL_KEYS
* ("downCycleFocusTraversalKeys")</li>
* <li>this Container's focus traversal policy ("focusTraversalPolicy")
* </li>
* <li>this Container's focus-cycle-root state ("focusCycleRoot")</li>
* <li>this Container's focus-traversal-policy-provider state("focusTraversalPolicyProvider")</li>
* <li>this Container's focus-traversal-policy-provider state("focusTraversalPolicyProvider")</li>
* </ul>
* Note that if this Container is inheriting a bound property, then no
* event will be fired in response to a change in the inherited property.
* <p>
* If listener is null, no exception is thrown and no action is performed.
*
* @param propertyName one of the property names listed above
* @param listener the PropertyChangeListener to be added
*
* @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
* @see Component#removePropertyChangeListener
*/
}
// Serialization support. A Container is responsible for restoring the
// parent fields of its component children.
/**
* Container Serial Data Version.
*/
/**
* Serializes this <code>Container</code> to the specified
* <code>ObjectOutputStream</code>.
* <ul>
* <li>Writes default serializable fields to the stream.</li>
* <li>Writes a list of serializable ContainerListener(s) as optional
* data. The non-serializable ContainerListner(s) are detected and
* no attempt is made to serialize them.</li>
* <li>Write this Container's FocusTraversalPolicy if and only if it
* is Serializable; otherwise, <code>null</code> is written.</li>
* </ul>
*
* @param s the <code>ObjectOutputStream</code> to write
* @serialData <code>null</code> terminated sequence of 0 or more pairs;
* the pair consists of a <code>String</code> and <code>Object</code>;
* the <code>String</code> indicates the type of object and
* is one of the following:
* <code>containerListenerK</code> indicating an
* <code>ContainerListener</code> object;
* the <code>Container</code>'s <code>FocusTraversalPolicy</code>,
* or <code>null</code>
*
* @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
* @see Container#containerListenerK
* @see #readObject(ObjectInputStream)
*/
s.writeFields();
s.writeObject(null);
} else {
s.writeObject(null);
}
}
/**
* Deserializes this <code>Container</code> from the specified
* <code>ObjectInputStream</code>.
* <ul>
* <li>Reads default serializable fields from the stream.</li>
* <li>Reads a list of serializable ContainerListener(s) as optional
* data. If the list is null, no Listeners are installed.</li>
* <li>Reads this Container's FocusTraversalPolicy, which may be null,
* as optional data.</li>
* </ul>
*
* @param s the <code>ObjectInputStream</code> to read
* @serial
* @see #addContainerListener
* @see #writeObject(ObjectOutputStream)
*/
throws ClassNotFoundException, IOException
{
for (int i = 0; i < ncomponents; ++i) {
}
// Old stream. Doesn't contain maxSize among Component's fields.
}
}
if (containerListenerK == key) {
} else {
// skip value for unrecognized key
s.readObject();
}
}
try {
if (policy instanceof FocusTraversalPolicy) {
}
// JDK 1.1/1.2/1.3 instances will not have this optional data.
// e.eof will be true to indicate that there is no more data
// available for this object. If e.eof is not true, throw the
// exception as it might have been caused by reasons unrelated to
// focusTraversalPolicy.
if (!e.eof) {
throw e;
}
}
}
/*
* --- Accessibility Support ---
*/
/**
* Inner class of Container used to provide default support for
* accessibility. This class is not meant to be used directly by
* application developers, but is instead meant only to be
* subclassed by container developers.
* <p>
* The class used to obtain the accessible role for this object,
* as well as implementing many of the methods in the
* AccessibleContainer interface.
* @since 1.3
*/
/**
* JDK1.3 serialVersionUID
*/
/**
* Returns the number of accessible children in the object. If all
* of the children of this object implement <code>Accessible</code>,
* then this method should return the number of children of this object.
*
* @return the number of accessible children in the object
*/
public int getAccessibleChildrenCount() {
return Container.this.getAccessibleChildrenCount();
}
/**
* Returns the nth <code>Accessible</code> child of the object.
*
* @param i zero-based index of child
* @return the nth <code>Accessible</code> child of the object
*/
return Container.this.getAccessibleChild(i);
}
/**
* Returns the <code>Accessible</code> child, if one exists,
* contained at the local coordinate <code>Point</code>.
*
* @param p the point defining the top-left corner of the
* <code>Accessible</code>, given in the coordinate space
* of the object's parent
* @return the <code>Accessible</code>, if it exists,
* at the specified location; else <code>null</code>
*/
return Container.this.getAccessibleAt(p);
}
/**
* Fire <code>PropertyChange</code> listener, if one is registered,
* when children are added or removed.
* @since 1.3
*/
protected class AccessibleContainerHandler
implements ContainerListener {
if (c != null && c instanceof Accessible) {
}
}
if (c != null && c instanceof Accessible) {
}
}
}
/**
* Adds a PropertyChangeListener to the listener list.
*
* @param listener the PropertyChangeListener to be added
*/
if (accessibleContainerHandler == null) {
}
super.addPropertyChangeListener(listener);
}
} // inner class AccessibleAWTContainer
/**
* Returns the <code>Accessible</code> child contained at the local
* coordinate <code>Point</code>, if one exists. Otherwise
* returns <code>null</code>.
*
* @param p the point defining the top-left corner of the
* <code>Accessible</code>, given in the coordinate space
* of the object's parent
* @return the <code>Accessible</code> at the specified location,
* if it exists; otherwise <code>null</code>
*/
synchronized (getTreeLock()) {
if (this instanceof Accessible) {
Accessible a = (Accessible)this;
for (int i=0; i < nchildren; i++) {
a = ac.getAccessibleChild(i);
if ((a != null)) {
ac = a.getAccessibleContext();
p.y-location.y);
return a;
}
}
}
}
}
}
return (Accessible)this;
} else {
if (!this.contains(p.x,p.y)) {
} else {
int ncomponents = this.getComponentCount();
for (int i=0; i < ncomponents; i++) {
}
}
}
}
if (ret instanceof Accessible) {
return (Accessible) ret;
}
}
return null;
}
}
/**
* Returns the number of accessible children in the object. If all
* of the children of this object implement <code>Accessible</code>,
* then this method should return the number of children of this object.
*
* @return the number of accessible children in the object
*/
int getAccessibleChildrenCount() {
synchronized (getTreeLock()) {
int count = 0;
if (children[i] instanceof Accessible) {
count++;
}
}
return count;
}
}
/**
* Returns the nth <code>Accessible</code> child of the object.
*
* @param i zero-based index of child
* @return the nth <code>Accessible</code> child of the object
*/
synchronized (getTreeLock()) {
int count = 0;
if (children[j] instanceof Accessible) {
if (count == i) {
return (Accessible) children[j];
} else {
count++;
}
}
}
return null;
}
}
// ************************** MIXING CODE *******************************
synchronized (getTreeLock()) {
if (!c.isDisplayable()) {
throw new IllegalStateException(
"Peer does not exist while invoking the increaseComponentCount() method"
);
}
int addHW = 0;
int addLW = 0;
if (c instanceof Container) {
}
if (c.isLightweight()) {
addLW++;
} else {
addHW++;
}
}
}
}
synchronized (getTreeLock()) {
if (!c.isDisplayable()) {
throw new IllegalStateException(
"Peer does not exist while invoking the decreaseComponentCount() method"
);
}
int subHW = 0;
int subLW = 0;
if (c instanceof Container) {
}
if (c.isLightweight()) {
subLW++;
} else {
subHW++;
}
}
}
}
private int getTopmostComponentIndex() {
if (getComponentCount() > 0) {
return 0;
}
return -1;
}
private int getBottommostComponentIndex() {
if (getComponentCount() > 0) {
return getComponentCount() - 1;
}
return -1;
}
/*
* This method is overriden to handle opaque children in non-opaque
* containers.
*/
if (isLightweight() && isNonOpaqueForMixing()
{
if (c.isLightweight() && c.isShowing()) {
s = s.getUnion(c.getOpaqueShape());
}
}
return s.getIntersection(getNormalShape());
}
return super.getOpaqueShape();
}
}
}
}
if (fromZorder == -1) {
return;
}
return;
}
// An invalid container with not-null layout should be ignored
// by the mixing code, the container will be validated later
// and the mixing code will be executed later.
return;
}
if (!comp.isLightweight()) {
}
}
}
final void recursiveApplyCurrentShape() {
}
}
}
if (fromZorder == -1) {
return;
}
// An invalid container with not-null layout should be ignored
// by the mixing code, the container will be validated later
// and the mixing code will be executed later.
return;
}
if (!comp.isLightweight()) {
}
}
}
}
private void recursiveShowHeavyweightChildren() {
if (!hasHeavyweightDescendants() || !isVisible()) {
return;
}
if (comp.isLightweight()) {
}
} else {
peer.setVisible(true);
}
}
}
}
}
private void recursiveHideHeavyweightChildren() {
if (!hasHeavyweightDescendants()) {
return;
}
if (comp.isLightweight()) {
}
} else {
peer.setVisible(false);
}
}
}
}
}
if (comp.isLightweight()) {
{
}
} else {
}
}
}
}
/**
* Checks if the container and its direct lightweight containers are
* visible.
*
* Consider the heavyweight container hides or shows the HW descendants
* automatically. Therefore we care of LW containers' visibility only.
*
* This method MUST be invoked under the TreeLock.
*/
final boolean isRecursivelyVisibleUpToHeavyweightContainer() {
if (!isLightweight()) {
return true;
}
{
return false;
}
}
return true;
}
void mixOnShowing() {
synchronized (getTreeLock()) {
}
boolean isLightweight = isLightweight();
}
if (!isMixingNeeded()) {
return;
}
}
super.mixOnShowing();
}
}
synchronized (getTreeLock()) {
"; isLightweight=" + isLightweight);
}
if (isLightweight) {
}
super.mixOnHiding(isLightweight);
}
}
void mixOnReshaping() {
synchronized (getTreeLock()) {
}
boolean isMixingNeeded = isMixingNeeded();
if (isLightweight() && hasHeavyweightDescendants()) {
{
}
if (!isMixingNeeded) {
return;
}
}
if (!isMixingNeeded) {
return;
}
super.mixOnReshaping();
}
}
synchronized (getTreeLock()) {
}
if (!isMixingNeeded()) {
return;
}
}
}
}
void mixOnValidating() {
synchronized (getTreeLock()) {
}
if (!isMixingNeeded()) {
return;
}
if (hasHeavyweightDescendants()) {
}
if (isLightweight() && isNonOpaqueForMixing()) {
}
super.mixOnValidating();
}
}
// ****************** END OF MIXING CODE ********************************
}
/**
* Class to manage the dispatching of MouseEvents to the lightweight descendants
* and SunDropTargetEvents to both lightweight and heavyweight descendants
* contained by a native container.
*
* NOTE: the class name is not appropriate anymore, but we cannot change it
* because we must keep serialization compatibility.
*
* @author Timothy Prinzing
*/
/*
* JDK 1.1 serialVersionUID
*/
/*
* Our own mouse event for when we're dragged over from another hw
* container
*/
private static final PlatformLogger eventLog = PlatformLogger.getLogger("java.awt.event.LightweightDispatcher");
this.nativeContainer = nativeContainer;
eventMask = 0;
}
/*
* Clean up any resources allocated when dispatcher was created;
* should be called from Container.removeNotify
*/
void dispose() {
//System.out.println("Disposing lw dispatcher");
}
/**
* Enables events to subcomponents.
*/
}
/**
* Dispatches an event to a sub-component if necessary, and
* returns whether or not the event was forwarded to a
* sub-component.
*
* @param e the event
*/
boolean ret = false;
/*
* Fix for BugTraq Id 4389284.
* Dispatch SunDropTargetEvents regardless of eventMask value.
* Do not update cursor on dispatching SunDropTargetEvents.
*/
if (e instanceof SunDropTargetEvent) {
} else {
}
}
}
return ret;
}
/* This method effectively returns whether or not a mouse button was down
* just BEFORE the event happened. A better method name might be
* wasAMouseButtonDownBeforeThisEvent().
*/
int modifiers = e.getModifiersEx();
{
switch (e.getButton()) {
case MouseEvent.BUTTON1:
break;
case MouseEvent.BUTTON2:
break;
case MouseEvent.BUTTON3:
break;
}
}
/* modifiers now as just before event */
}
/**
* This method attempts to distribute a mouse event to a lightweight
* component. It tries to avoid doing any unnecessary probes down
* into the component tree to minimize the overhead of determining
* where to route the event, since mouse movement events tend to
* come in large and frequent amounts.
*/
// 4508327 : MOUSE_CLICKED should only go to the recipient of
// the accompanying MOUSE_PRESSED, so don't reset mouseEventTarget on a
// MOUSE_CLICKED.
}
if (mouseEventTarget != null) {
switch (id) {
case MouseEvent.MOUSE_ENTERED:
case MouseEvent.MOUSE_EXITED:
break;
case MouseEvent.MOUSE_PRESSED:
break;
case MouseEvent.MOUSE_RELEASED:
break;
case MouseEvent.MOUSE_CLICKED:
// 4508327: MOUSE_CLICKED should never be dispatched to a Component
// other than that which received the MOUSE_PRESSED event. If the
// mouse is now over a different Component, don't dispatch the event.
// The previous fix for a similar problem was associated with bug
// 4155217.
if (mouseOver == mouseEventTarget) {
}
break;
case MouseEvent.MOUSE_MOVED:
break;
case MouseEvent.MOUSE_DRAGGED:
if (isMouseGrab(e)) {
}
break;
case MouseEvent.MOUSE_WHEEL:
// This may send it somewhere that doesn't have MouseWheelEvents
// enabled. In this case, Component.dispatchEventImpl() will
// retarget the event to a parent that DOES have the events enabled.
}
break;
}
//Consuming of wheel events is implemented in "retargetMouseEvent".
e.consume();
}
}
return e.isConsumed();
}
int x = e.getX();
int y = e.getY();
/*
* Fix for BugTraq ID 4395290.
* It is possible that SunDropTargetEvent's Point is outside of the
* native container bounds. In this case we truncate coordinates.
*/
if (!nativeContainer.contains(x, y)) {
if (d.width <= x) {
x = d.width - 1;
} else if (x < 0) {
x = 0;
}
if (d.height <= y) {
y = d.height - 1;
} else if (y < 0) {
y = 0;
}
}
switch (id) {
break;
default:
e.consume();
break;
}
}
return e.isConsumed();
}
/*
* @param targetOver Target mouse is over (including native container)
* @param e Mouse event in native container
*/
if (e instanceof SunDropTargetEvent &&
isMouseInNativeContainer == true) {
// This can happen if a lightweight component which initiated the
// drag has an associated drop target. MOUSE_ENTERED comes when the
// mouse is in the native container already. To propagate this event
// properly we should null out targetLastEntered.
id != LWD_MOUSE_DRAGGED_OVER &&
isMouseInNativeContainer == false ) {
// any event but an exit or drag means we're in the native container
isMouseInNativeContainer = true;
isMouseInNativeContainer = false;
}
if (isMouseInNativeContainer) {
}
if (targetLastEntered == targetEnter) {
return;
}
if (targetLastEntered != null) {
}
// consume native exit event if we generate one
e.consume();
}
if (targetEnter != null) {
}
// consume native enter event if we generate one
e.consume();
}
}
/*
* Listens to global mouse drag events so even drags originating
* events in this container
*/
private void startListeningForOtherDrags() {
//System.out.println("Adding AWTEventListener");
LightweightDispatcher.this,
return null;
}
}
);
}
private void stopListeningForOtherDrags() {
//System.out.println("Removing AWTEventListener");
return null;
}
}
);
}
/*
* (Implementation of AWTEventListener)
* Listen for drag events posted in other hw components so we can
*/
boolean isForeignDrag = (e instanceof MouseEvent) &&
!(e instanceof SunDropTargetEvent) &&
(e.getSource() != nativeContainer);
if (!isForeignDrag) {
// only interested in drags from other hw components
return;
}
synchronized (nativeContainer.getTreeLock()) {
// component may have disappeared since drag event posted
// (i.e. Swing hierarchical menus)
if ( !srcComponent.isShowing() ) {
return;
}
// see 5083555
// check if srcComponent is in any modal blocked window
Component c = nativeContainer;
c = c.getParent_NoClientCode();
}
return;
}
//
// create an internal 'dragged-over' event indicating
// we are being dragged over from another hw component
//
// translate coordinates to this native container
public void run() {
if (!nativeContainer.isShowing() ) {
return;
}
ptSrcOrigin.y - ptDstOrigin.y );
mouseEvent.getY(),
}
};
return;
} else {
if (!nativeContainer.isShowing() ) {
return;
}
}
}
//System.out.println("Track event: " + me);
// code (not a real event so don't pass it to dispatchEvent)
}
/**
* Sends a mouse event to the current mouse event recipient using
* the given event (sent to the windowed host) as a srcEvent. If
* the mouse event target is still in the component tree, the
* coordinates of the event are translated to those of the target.
* If the target has been removed, we don't bother to send the
* message.
*/
return; // mouse is over another hw component or target is disabled
}
x -= component.x;
y -= component.y;
}
if (e instanceof SunDropTargetEvent) {
id,
x,
y,
((SunDropTargetEvent)e).getDispatcher());
id,
e.getWhen(),
e.getModifiersEx() | e.getModifiers(),
x,
y,
e.getXOnScreen(),
e.getYOnScreen(),
e.getClickCount(),
e.isPopupTrigger(),
((MouseWheelEvent)e).getScrollType(),
((MouseWheelEvent)e).getScrollAmount(),
((MouseWheelEvent)e).getWheelRotation(),
((MouseWheelEvent)e).getPreciseWheelRotation());
}
else {
id,
e.getWhen(),
e.getModifiersEx() | e.getModifiers(),
x,
y,
e.getXOnScreen(),
e.getYOnScreen(),
e.getClickCount(),
e.isPopupTrigger(),
e.getButton());
}
if (target == nativeContainer) {
// avoid recursively calling LightweightDispatcher...
} else {
} else {
e.consume();
}
} else {
}
}
//An exception for wheel bubbling to the native system.
//In "processMouseEvent" total event consuming for wheel events is skipped.
//Protection from bubbling of Java-accepted wheel events.
e.consume();
}
}
}
// --- member variables -------------------------------
/**
* The windowed container that might be hosting events for
* subcomponents.
*/
/**
* This variable is not used, but kept for serialization compatibility
*/
/**
* The current subcomponent being hosted by this windowed
* component that has events being forwarded to it. If this
* is null, there are currently no events being forwarded to
* a subcomponent.
*/
/**
* The last component entered
*/
/**
* Is the mouse over the native container
*/
private transient boolean isMouseInNativeContainer = false;
/**
* This variable is not used, but kept for serialization compatibility
*/
/**
* The event mask for contained lightweight components. Lightweight
* components need a windowed container to host window-related
* events. This separate mask indicates events that have been
* requested by contained lightweight components without effecting
* the mask of the windowed component itself.
*/
private long eventMask;
/**
* The kind of events routed to lightweight components from windowed
* hosts.
*/
private static final long PROXY_EVENT_MASK =
private static final long MOUSE_MASK =
}