+++ /dev/null
-/* Copyright (C) 1999, 2000, 2002 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.awt;
-
-import java.awt.event.*;
-import java.io.PrintStream;
-import java.io.PrintWriter;
-import java.util.EventListener;
-import java.awt.peer.ComponentPeer;
-import java.awt.peer.ContainerPeer;
-import java.awt.peer.LightweightPeer;
-
-/* A somewhat incomplete class. */
-
-public class Container extends Component
-{
- /* Serialized fields from the serialization spec. */
- int ncomponents;
- Component[] component;
- LayoutManager layoutMgr;
- /* LightweightDispatcher dispatcher; */ // wtf?
- Dimension maxSize;
- int containerSerializedDataVersion;
-
- /* Anything else is non-serializable, and should be declared "transient". */
- transient ContainerListener containerListener;
-
- /**
- * Default constructor for subclasses.
- */
- public Container()
- {
- }
-
- /**
- * Returns the number of components in this container.
- *
- * @return The number of components in this container.
- */
- public int getComponentCount()
- {
- return ncomponents;
- }
-
- /**
- * Returns the number of components in this container.
- *
- * @return The number of components in this container.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getComponentCount()</code>.
- */
- public int countComponents()
- {
- return ncomponents;
- }
-
- /**
- * Returns the component at the specified index.
- *
- * @param index The index of the component to retrieve.
- *
- * @return The requested component.
- *
- * @exception ArrayIndexOutOfBoundsException If the specified index is not
- * valid.
- */
- public Component getComponent (int n)
- {
- if (n < 0 || n >= ncomponents)
- throw new ArrayIndexOutOfBoundsException("no such component");
- return component[n];
- }
-
- /**
- * Returns an array of the components in this container.
- *
- * @return The components in this container.
- */
- public Component[] getComponents()
- {
- Component[] result = new Component[ncomponents];
- if (ncomponents > 0)
- System.arraycopy(component, 0, result, 0, ncomponents);
- return result;
- }
-
- /**
- * Returns the insets for this container, which is the space used for
- * borders, the margin, etc.
- *
- * @return The insets for this container.
- */
- public Insets getInsets()
- {
- if (peer == null)
- return new Insets(0, 0, 0, 0);
- return ((ContainerPeer) peer).getInsets();
- }
-
- /**
- * Returns the insets for this container, which is the space used for
- * borders, the margin, etc.
- *
- * @return The insets for this container.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getInsets()</code>.
- */
- public Insets insets()
- {
- return getInsets();
- }
-
- /**
- * Adds the specified component to this container at the end of the
- * component list.
- *
- * @param component The component to add to the container.
- *
- * @return The same component that was added.
- */
- public Component add (Component comp)
- {
- addImpl (comp, null, -1);
- return comp;
- }
-
- /**
- * Adds the specified component to the container at the end of the
- * component list. This method should not be used. Instead, use
- * <code>add(Component, Object</code>.
- *
- * @param name FIXME
- * @param component The component to be added.
- *
- * @return The same component that was added.
- */
- public Component add (String name, Component comp)
- {
- addImpl (comp, name, -1);
- return comp;
- }
-
- /**
- * Adds the specified component to this container at the specified index
- * in the component list.
- *
- * @param component The component to be added.
- * @param index The index in the component list to insert this child
- * at, or -1 to add at the end of the list.
- *
- * @return The same component that was added.
- *
- * @param throws ArrayIndexOutOfBounds If the specified index is invalid.
- */
- public Component add (Component comp, int index)
- {
- addImpl (comp, null, index);
- return comp;
- }
-
- /**
- * Adds the specified component to this container at the end of the
- * component list. The layout manager will use the specified constraints
- * when laying out this component.
- *
- * @param component The component to be added to this container.
- * @param constraints The layout constraints for this component.
- */
- public void add (Component comp, Object constraints)
- {
- addImpl (comp, constraints, -1);
- }
-
- /**
- * Adds the specified component to this container at the specified index
- * in the component list. The layout manager will use the specified
- * constraints when layout out this component.
- *
- * @param component The component to be added.
- * @param constraints The layout constraints for this component.
- * @param index The index in the component list to insert this child
- * at, or -1 to add at the end of the list.
- *
- * @param throws ArrayIndexOutOfBounds If the specified index is invalid.
- */
- public void add (Component comp, Object constraints, int index)
- {
- addImpl (comp, constraints, index);
- }
-
- /**
- * This method is called by all the <code>add()</code> methods to perform
- * the actual adding of the component. Subclasses who wish to perform
- * their own processing when a component is added should override this
- * method. Any subclass doing this must call the superclass version of
- * this method in order to ensure proper functioning of the container.
- *
- * @param component The component to be added.
- * @param constraints The layout constraints for this component, or
- * <code>null</code> if there are no constraints.
- * @param index The index in the component list to insert this child
- * at, or -1 to add at the end of the list.
- *
- * @param throws ArrayIndexOutOfBounds If the specified index is invalid.
- */
- protected void addImpl (Component comp, Object constraints, int index)
- {
- if (index > ncomponents
- || (index < 0 && index != -1)
- || comp instanceof Window
- || (comp instanceof Container
- && ((Container) comp).isAncestorOf (this)))
- throw new IllegalArgumentException ();
-
- // Reparent component, and make sure component is instantiated if
- // we are.
- if (comp.parent != null)
- comp.parent.remove (comp);
- comp.parent = this;
- if (peer != null)
- {
- comp.addNotify ();
-
- if (comp.isLightweight())
- enableEvents(comp.eventMask);
- }
-
- invalidate ();
-
- if (component == null)
- component = new Component[4]; // FIXME, better initial size?
-
- // This isn't the most efficient implementation. We could do less
- // copying when growing the array. It probably doesn't matter.
- if (ncomponents >= component.length)
- {
- int nl = component.length * 2;
- Component[] c = new Component[nl];
- System.arraycopy (component, 0, c, 0, ncomponents);
- component = c;
- }
- if (index == -1)
- component[ncomponents++] = comp;
- else
- {
- System.arraycopy (component, index, component, index + 1,
- ncomponents - index);
- component[index] = comp;
- ++ncomponents;
- }
-
- // Notify the layout manager.
- if (layoutMgr != null)
- {
- if (layoutMgr instanceof LayoutManager2)
- {
- LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
- lm2.addLayoutComponent (comp, constraints);
- }
- else if (constraints instanceof String)
- layoutMgr.addLayoutComponent ((String) constraints, comp);
- else
- layoutMgr.addLayoutComponent (null, comp);
- }
-
- // Post event to notify of adding the container.
- ContainerEvent ce = new ContainerEvent (this,
- ContainerEvent.COMPONENT_ADDED,
- comp);
- getToolkit().getSystemEventQueue().postEvent(ce);
- }
-
- /**
- * Removes the component at the specified index from this container.
- *
- * @param index The index of the component to remove.
- */
- public void remove (int index)
- {
- Component r = component[index];
-
- r.removeNotify ();
-
- System.arraycopy (component, index + 1, component, index,
- ncomponents - index - 1);
- component[--ncomponents] = null;
-
- invalidate ();
-
- if (layoutMgr != null)
- layoutMgr.removeLayoutComponent (r);
-
- // Post event to notify of adding the container.
- ContainerEvent ce = new ContainerEvent (this,
- ContainerEvent.COMPONENT_REMOVED,
- r);
- getToolkit().getSystemEventQueue().postEvent(ce);
- }
-
- /**
- * Removes the specified component from this container.
- *
- * @return component The component to remove from this container.
- */
- public void remove (Component comp)
- {
- for (int i = 0; i < ncomponents; ++i)
- {
- if (component[i] == comp)
- {
- remove (i);
- break;
- }
- }
- }
-
- /**
- * Removes all components from this container.
- */
- public void removeAll()
- {
- while (ncomponents > 0)
- remove (0);
- }
-
- /**
- * Returns the current layout manager for this container.
- *
- * @return The layout manager for this container.
- */
- public LayoutManager getLayout()
- {
- return layoutMgr;
- }
-
- /**
- * Sets the layout manager for this container to the specified layout
- * manager.
- *
- * @param mgr The new layout manager for this container.
- */
- public void setLayout(LayoutManager mgr)
- {
- layoutMgr = mgr;
- invalidate ();
- }
-
- /**
- * Layout the components in this container.
- */
- public void doLayout()
- {
- if (layoutMgr != null)
- layoutMgr.layoutContainer (this);
- }
-
- /**
- * Layout the components in this container.
- *
- * @deprecated This method is deprecated in favor of
- * <code>doLayout()</code>.
- */
- public void layout()
- {
- doLayout();
- }
-
- /**
- * Invalidates this container to indicate that it (and all parent
- * containers) need to be laid out.
- */
- public void invalidate()
- {
- super.invalidate ();
- }
-
- /**
- * Re-lays out the components in this container.
- */
- public void validate()
- {
- // FIXME: use the tree lock?
- synchronized (this)
- {
- if (! isValid ())
- {
- validateTree ();
- }
- }
- }
-
- /**
- * Recursively validates the container tree, recomputing any invalid
- * layouts.
- */
- protected void validateTree()
- {
- if (valid)
- return;
-
- ContainerPeer cPeer = null;
- if ((peer != null) && !(peer instanceof LightweightPeer))
- {
- cPeer = (ContainerPeer) peer;
- cPeer.beginValidate();
- }
-
- doLayout ();
- for (int i = 0; i < ncomponents; ++i)
- {
- Component comp = component[i];
- if (! comp.isValid ())
- {
- if (comp instanceof Container)
- {
- ((Container) comp).validateTree();
- }
- else
- {
- component[i].validate();
- }
- }
- }
-
- /* children will call invalidate() when they are layed out. It
- is therefore imporant that valid is not set to true
- before after the children has been layed out. */
- valid = true;
-
- if (cPeer != null)
- cPeer.endValidate();
- }
-
- public void setFont(Font f)
- {
- super.setFont(f);
- // FIXME, should invalidate all children with font == null
- }
-
- /**
- * Returns the preferred size of this container.
- *
- * @return The preferred size of this container.
- */
- public Dimension getPreferredSize()
- {
- if (layoutMgr != null)
- return layoutMgr.preferredLayoutSize (this);
- else
- return super.getPreferredSize ();
- }
-
- /**
- * Returns the preferred size of this container.
- *
- * @return The preferred size of this container.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getPreferredSize()</code>.
- */
- public Dimension preferredSize()
- {
- return getPreferredSize();
- }
-
- /**
- * Returns the minimum size of this container.
- *
- * @return The minimum size of this container.
- */
- public Dimension getMinimumSize()
- {
- if (layoutMgr != null)
- return layoutMgr.minimumLayoutSize (this);
- else
- return super.getMinimumSize ();
- }
-
- /**
- * Returns the minimum size of this container.
- *
- * @return The minimum size of this container.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getMinimumSize()</code>.
- */
- public Dimension minimumSize()
- {
- return getMinimumSize();
- }
-
- /**
- * Returns the maximum size of this container.
- *
- * @return The maximum size of this container.
- */
- public Dimension getMaximumSize()
- {
- if (layoutMgr != null && layoutMgr instanceof LayoutManager2)
- {
- LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
- return lm2.maximumLayoutSize (this);
- }
- else
- return super.getMaximumSize ();
- }
-
- /**
- * Returns the preferred alignment along the X axis. This is a value
- * between 0 and 1 where 0 represents alignment flush left and
- * 1 means alignment flush right, and 0.5 means centered.
- *
- * @return The preferred alignment along the X axis.
- */
- public float getAlignmentX()
- {
- if (layoutMgr instanceof LayoutManager2)
- {
- LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
- return lm2.getLayoutAlignmentX (this);
- }
- else
- return super.getAlignmentX();
- }
-
- /**
- * Returns the preferred alignment along the Y axis. This is a value
- * between 0 and 1 where 0 represents alignment flush top and
- * 1 means alignment flush bottom, and 0.5 means centered.
- *
- * @return The preferred alignment along the Y axis.
- */
- public float getAlignmentY()
- {
- if (layoutMgr instanceof LayoutManager2)
- {
- LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
- return lm2.getLayoutAlignmentY (this);
- }
- else
- return super.getAlignmentY();
- }
-
- /**
- * Paints this container. The implementation of this method in this
- * class forwards to any lightweight components in this container. If
- * this method is subclassed, this method should still be invoked as
- * a superclass method so that lightweight components are properly
- * drawn.
- *
- * @param graphics The graphics context for this paint job.
- */
- public void paint(Graphics g)
- {
- if (!isShowing())
- return;
- super.paint(g);
- visitChildren(g, GfxPaintVisitor.INSTANCE, true);
- }
-
- /**
- * Perform a graphics operation on the children of this container.
- * For each applicable child, the visitChild() method will be called
- * to perform the graphics operation.
- *
- * @param gfx The graphics object that will be used to derive new
- * graphics objects for the children.
- *
- * @param visitor Object encapsulating the graphics operation that
- * should be performed.
- *
- * @param lightweightOnly If true, only lightweight components will
- * be visited.
- */
- private void visitChildren(Graphics gfx, GfxVisitor visitor,
- boolean lightweightOnly)
- {
- // FIXME: do locking
-
- for (int i = 0; i < ncomponents; ++i)
- {
- Component comp = component[i];
- boolean applicable = comp.isVisible()
- && (comp.isLightweight() || !lightweightOnly);
-
- if (applicable)
- visitChild(gfx, visitor, comp);
- }
- }
-
- /**
- * Perform a graphics operation on a child. A translated and clipped
- * graphics object will be created, and the visit() method of the
- * visitor will be called to perform the operation.
- *
- * @param gfx The graphics object that will be used to derive new
- * graphics objects for the child.
- *
- * @param visitor Object encapsulating the graphics operation that
- * should be performed.
- *
- * @param comp The child component that should be visited.
- */
- private void visitChild(Graphics gfx, GfxVisitor visitor,
- Component comp)
- {
- Rectangle bounds = comp.getBounds();
- Rectangle clip = gfx.getClipBounds().intersection(bounds);
-
- if (clip.isEmpty()) return;
-
- Graphics gfx2 = gfx.create();
- gfx2.setClip(clip.x, clip.y, clip.width, clip.height);
- gfx2.translate(bounds.x, bounds.y);
-
- visitor.visit(comp, gfx2);
- }
-
- /**
- * Updates this container. The implementation of this method in this
- * class forwards to any lightweight components in this container. If
- * this method is subclassed, this method should still be invoked as
- * a superclass method so that lightweight components are properly
- * drawn.
- *
- * @param graphics The graphics context for this update.
- */
- public void update(Graphics g)
- {
- super.update(g);
- }
-
- /**
- * Prints this container. The implementation of this method in this
- * class forwards to any lightweight components in this container. If
- * this method is subclassed, this method should still be invoked as
- * a superclass method so that lightweight components are properly
- * drawn.
- *
- * @param graphics The graphics context for this print job.
- */
- public void print(Graphics g)
- {
- super.print(g);
- visitChildren(g, GfxPrintVisitor.INSTANCE, true);
- }
-
- /**
- * Paints all of the components in this container.
- *
- * @param graphics The graphics context for this paint job.
- */
- public void paintComponents(Graphics g)
- {
- super.paint(g);
- visitChildren(g, GfxPaintAllVisitor.INSTANCE, true);
- }
-
- /**
- * Prints all of the components in this container.
- *
- * @param graphics The graphics context for this print job.
- */
- public void printComponents(Graphics g)
- {
- super.paint(g);
- visitChildren(g, GfxPrintAllVisitor.INSTANCE, true);
- }
-
- void dispatchEventImpl(AWTEvent e)
- {
- if ((e.id <= ContainerEvent.CONTAINER_LAST
- && e.id >= ContainerEvent.CONTAINER_FIRST)
- && (containerListener != null
- || (eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0))
- processEvent(e);
- else
- super.dispatchEventImpl(e);
- }
-
- /**
- * Adds the specified container listener to this object's list of
- * container listeners.
- *
- * @param listener The listener to add.
- */
- public synchronized void addContainerListener(ContainerListener l)
- {
- containerListener = AWTEventMulticaster.add (containerListener, l);
- }
-
- /**
- * Removes the specified container listener from this object's list of
- * container listeners.
- *
- * @param listener The listener to remove.
- */
- public synchronized void removeContainerListener(ContainerListener l)
- {
- containerListener = AWTEventMulticaster.remove(containerListener, l);
- }
-
- /** @since 1.3 */
- public EventListener[] getListeners(Class listenerType)
- {
- if (listenerType == ContainerListener.class)
- return getListenersImpl(listenerType, containerListener);
- else return super.getListeners(listenerType);
- }
-
- /**
- * Processes the specified event. This method calls
- * <code>processContainerEvent()</code> if this method is a
- * <code>ContainerEvent</code>, otherwise it calls the superclass
- * method.
- *
- * @param event The event to be processed.
- */
- protected void processEvent(AWTEvent e)
- {
- if (e instanceof ContainerEvent)
- processContainerEvent((ContainerEvent) e);
- else super.processEvent(e);
- }
-
- /**
- * Called when a container event occurs if container events are enabled.
- * This method calls any registered listeners.
- *
- * @param event The event that occurred.
- */
- protected void processContainerEvent(ContainerEvent e)
- {
- if (containerListener == null)
- return;
- switch (e.id)
- {
- case ContainerEvent.COMPONENT_ADDED:
- containerListener.componentAdded(e);
- break;
-
- case ContainerEvent.COMPONENT_REMOVED:
- containerListener.componentRemoved(e);
- break;
- }
- }
-
- /**
- * AWT 1.0 event processor.
- *
- * @param event The event that occurred.
- *
- * @deprecated This method is deprecated in favor of
- * <code>dispatchEvent()</code>.
- */
- public void deliverEvent(Event e)
- {
- }
-
- /**
- * Returns the component located at the specified point. This is done
- * by checking whether or not a child component claims to contain this
- * point. The first child component that does is returned. If no
- * child component claims the point, the container itself is returned,
- * unless the point does not exist within this container, in which
- * case <code>null</code> is returned.
- *
- * @param x The X coordinate of the point.
- * @param y The Y coordinate of the point.
- *
- * @return The component containing the specified point, or
- * <code>null</code> if there is no such point.
- */
- public Component getComponentAt (int x, int y)
- {
- if (! contains (x, y))
- return null;
- for (int i = 0; i < ncomponents; ++i)
- {
- // Ignore invisible children...
- if (!component[i].isVisible())
- continue;
-
- int x2 = x - component[i].x;
- int y2 = y - component[i].y;
- if (component[i].contains (x2, y2))
- return component[i];
- }
- return this;
- }
-
- /**
- * Returns the component located at the specified point. This is done
- * by checking whether or not a child component claims to contain this
- * point. The first child component that does is returned. If no
- * child component claims the point, the container itself is returned,
- * unless the point does not exist within this container, in which
- * case <code>null</code> is returned.
- *
- * @param point The point to return the component at.
- *
- * @return The component containing the specified point, or <code>null</code>
- * if there is no such point.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getComponentAt(int, int)</code>.
- */
- public Component locate(int x, int y)
- {
- return getComponentAt(x, y);
- }
-
- /**
- * Returns the component located at the specified point. This is done
- * by checking whether or not a child component claims to contain this
- * point. The first child component that does is returned. If no
- * child component claims the point, the container itself is returned,
- * unless the point does not exist within this container, in which
- * case <code>null</code> is returned.
- *
- * @param point The point to return the component at.
- *
- * @return The component containing the specified point, or <code>null</code>
- * if there is no such point.
- */
- public Component getComponentAt(Point p)
- {
- return getComponentAt(p.x, p.y);
- }
-
- public Component findComponentAt (int x, int y)
- {
- if (! contains (x, y))
- return null;
-
- for (int i = 0; i < ncomponents; ++i)
- {
- // Ignore invisible children...
- if (!component[i].isVisible())
- continue;
-
- int x2 = x - component[i].x;
- int y2 = y - component[i].y;
- // We don't do the contains() check right away because
- // findComponentAt would redundantly do it first thing.
- if (component[i] instanceof Container)
- {
- Container k = (Container) component[i];
- Component r = k.findComponentAt (x2, y2);
- if (r != null)
- return r;
- }
- else if (component[i].contains (x2, y2))
- return component[i];
- }
-
- return this;
- }
-
- public Component findComponentAt(Point p)
- {
- return findComponentAt(p.x, p.y);
- }
-
- /**
- * Called when this container is added to another container to inform it
- * to create its peer. Peers for any child components will also be
- * created.
- */
- public void addNotify ()
- {
- addNotifyContainerChildren ();
- super.addNotify();
- }
-
- private void addNotifyContainerChildren()
- {
- for (int i = ncomponents; --i >= 0; )
- {
- component[i].addNotify();
- if (component[i].isLightweight())
- enableEvents(component[i].eventMask);
- }
- }
-
- /**
- * Called when this container is removed from its parent container to
- * inform it to destroy its peer. This causes the peers of all child
- * component to be destroyed as well.
- */
- public void removeNotify()
- {
- for (int i = 0; i < ncomponents; ++i)
- component[i].removeNotify ();
- super.removeNotify();
- }
-
- /**
- * Tests whether or not the specified component is contained within
- * this components subtree.
- *
- * @param component The component to test.
- *
- * @return <code>true</code> if this container is an ancestor of the
- * specified component, <code>false</code>.
- */
- public boolean isAncestorOf (Component comp)
- {
- for (;;)
- {
- if (comp == null)
- return false;
- if (comp == this)
- return true;
- comp = comp.getParent();
- }
- }
-
- /**
- * Returns a string representing the state of this container for
- * debugging purposes.
- *
- * @return A string representing the state of this container.
- */
- protected String paramString()
- {
- String param = super.paramString();
- if (layoutMgr != null)
- param = param + "," + layoutMgr.getClass().getName();
-
- return param;
- }
-
- /**
- * Writes a listing of this container to the specified stream starting
- * at the specified indentation point.
- *
- * @param stream The <code>PrintStream</code> to write to.
- * @param indent The indentation point.
- */
- public void list (PrintStream out, int indent)
- {
- super.list (out, indent);
- for (int i = 0; i < ncomponents; ++i)
- component[i].list (out, indent + 2);
- }
-
- /**
- * Writes a listing of this container to the specified stream starting
- * at the specified indentation point.
- *
- * @param stream The <code>PrintWriter</code> to write to.
- * @param indent The indentation point.
- */
- public void list(PrintWriter out, int indent)
- {
- super.list (out, indent);
- for (int i = 0; i < ncomponents; ++i)
- component[i].list (out, indent + 2);
- }
-
-
- /* The following classes are used in concert with the
- visitChildren() method to implement all the graphics operations
- that requires traversal of the containment hierarchy. */
-
- abstract static class GfxVisitor
- {
- public abstract void visit(Component c, Graphics gfx);
- }
-
- static class GfxPaintVisitor extends GfxVisitor
- {
- public void visit(Component c, Graphics gfx) { c.paint(gfx); }
- public static final GfxVisitor INSTANCE = new GfxPaintVisitor();
- }
-
- static class GfxPrintVisitor extends GfxVisitor
- {
- public void visit(Component c, Graphics gfx) { c.print(gfx); }
- public static final GfxVisitor INSTANCE = new GfxPrintVisitor();
- }
-
- static class GfxPaintAllVisitor extends GfxVisitor
- {
- public void visit(Component c, Graphics gfx) { c.paintAll(gfx); }
- public static final GfxVisitor INSTANCE = new GfxPaintAllVisitor();
- }
-
- static class GfxPrintAllVisitor extends GfxVisitor
- {
- public void visit(Component c, Graphics gfx) { c.printAll(gfx); }
- public static final GfxVisitor INSTANCE = new GfxPrintAllVisitor();
- }
-
- // This is used to implement Component.transferFocus.
- Component findNextFocusComponent (Component child)
- {
- int start, end;
- if (child != null)
- {
- for (start = 0; start < ncomponents; ++start)
- {
- if (component[start] == child)
- break;
- }
- end = start;
- // This special case lets us be sure to terminate.
- if (end == 0)
- end = ncomponents;
- ++start;
- }
- else
- {
- start = 0;
- end = ncomponents;
- }
-
- for (int j = start; j != end; ++j)
- {
- if (j >= ncomponents)
- {
- // The JCL says that we should wrap here. However, that
- // seems wrong. To me it seems that focus order should be
- // global within in given window. So instead if we reach
- // the end we try to look in our parent, if we have one.
- if (parent != null)
- return parent.findNextFocusComponent (this);
- j -= ncomponents;
- }
- if (component[j] instanceof Container)
- {
- Component c = component[j];
- c = c.findNextFocusComponent (null);
- if (c != null)
- return c;
- }
- else if (component[j].isFocusTraversable ())
- return component[j];
- }
-
- return null;
- }
-}
projects / msp430-gcc.git / blobdiff