Initial revision

From-SVN: r102074
2005-07-16 00:30:23 +00:00
parent 6f4434b39b
commit f911ba985a
4557 changed files with 1000262 additions and 0 deletions
@@ -0,0 +1,173 @@
+/* Panel.java -- Simple container object
+   Copyright (C) 1999, 2002, 2004, 2005  Free Software Foundation, Inc.
+
+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., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 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 javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+
+/**
+ * A panel is a simple container class. It's default layout is the
+ * <code>FlowLayout</code> manager.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @author Eric Blake (ebb9@email.byu.edu)
+ * @see FlowLayout
+ * @since 1.0
+ * @status updated to 1.4
+ */
+public class Panel extends Container implements Accessible
+{
+  /**
+   * Compatible with JDK 1.0+.
+   */
+  private static final long serialVersionUID = -2728009084054400034L;
+
+  /** The cached accessible context. */
+  private transient AccessibleContext context;
+
+  /** Flag set when the first system-requested paint event is
+      dispatched. */
+  private transient boolean initialSystemUpdateDone;
+
+  /** Flag set when the first application-requested paint event is
+      consumed. */
+  private transient boolean initialUpdateConsumed;
+
+  /*
+   * The number used to generate the name returned by getName.
+   */
+  private static transient long next_panel_number;
+
+  /**
+   * Initializes a new instance of <code>Panel</code> that has a default
+   * layout manager of <code>FlowLayout</code>.
+   */
+  public Panel()
+  {
+    this(new FlowLayout());
+  }
+
+  /**
+   * Initializes a new instance of <code>Panel</code> with the specified
+   * layout manager.
+   *
+   * @param layoutManager the layout manager for this object
+   * @since 1.1
+   */
+  public Panel(LayoutManager layoutManager)
+  {
+    setLayout(layoutManager);
+  }
+
+  /**
+   * Notifies this object to create its native peer.
+   *
+   * @see #isDisplayable()
+   * @see #removeNotify()
+   */
+  public void addNotify()
+  {
+    if (peer == null)
+      peer = getToolkit().createPanel(this);
+    super.addNotify();
+  }
+
+  /**
+   * Gets the AccessibleContext associated with this panel, creating one if
+   * necessary. This always returns an instance of {@link AccessibleAWTPanel}.
+   *
+   * @return the accessibility context of this panel
+   * @since 1.3
+   */
+  public AccessibleContext getAccessibleContext()
+  {
+    if (context == null)
+      context = new AccessibleAWTPanel();
+    return context;
+  }
+
+  /**
+   * This class provides accessibility support for Panels, and is the
+   * runtime type returned by {@link #getAccessibleContext()}.
+   *
+   * @author Eric Blake (ebb9@email.byu.edu)
+   * @since 1.3
+   */
+  protected class AccessibleAWTPanel extends AccessibleAWTContainer
+  {
+    /**
+     * Compatible with JDK 1.4+.
+     */
+    private static final long serialVersionUID = -6409552226660031050L;
+
+    /**
+     * The default constructor.
+     */
+    protected AccessibleAWTPanel()
+    {
+    }
+
+    /**
+     * Get the role of this accessible object, a panel.
+     *
+     * @return the role of the object
+     * @see AccessibleRole#PANEL
+     */
+    public AccessibleRole getAccessibleRole()
+    {
+      return AccessibleRole.PANEL;
+    }
+  }
+
+  /**
+   * Generate a unique name for this panel.
+   *
+   * @return A unique name for this panel.
+   */
+  String generateName ()
+  {
+    return "panel" + getUniqueLong ();
+  }
+
+  private static synchronized long getUniqueLong ()
+  {
+    return next_panel_number++;
+  }
+}