src/java.desktop/share/classes/java/awt/Scrollbar.java

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   1 /*
   2  * Copyright (c) 1995, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 416     }
 417 
 418     /**
 419      * Constructs a name for this component.  Called by <code>getName</code>
 420      * when the name is <code>null</code>.
 421      */
 422     String constructComponentName() {
 423         synchronized (Scrollbar.class) {
 424             return base + nameCounter++;
 425         }
 426     }
 427 
 428     /**
 429      * Creates the <code>Scrollbar</code>'s peer.  The peer allows you to modify
 430      * the appearance of the <code>Scrollbar</code> without changing any of its
 431      * functionality.
 432      */
 433     public void addNotify() {
 434         synchronized (getTreeLock()) {
 435             if (peer == null)
 436                 peer = getToolkit().createScrollbar(this);
 437             super.addNotify();
 438         }
 439     }
 440 
 441     /**
 442      * Returns the orientation of this scroll bar.
 443      *
 444      * @return    the orientation of this scroll bar, either
 445      *               <code>Scrollbar.HORIZONTAL</code> or
 446      *               <code>Scrollbar.VERTICAL</code>
 447      * @see       java.awt.Scrollbar#setOrientation
 448      */
 449     public int getOrientation() {
 450         return orientation;
 451     }
 452 
 453     /**
 454      * Sets the orientation for this scroll bar.
 455      *
 456      * @param orientation  the orientation of this scroll bar, either


   1 /*
   2  * Copyright (c) 1995, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 416     }
 417 
 418     /**
 419      * Constructs a name for this component.  Called by <code>getName</code>
 420      * when the name is <code>null</code>.
 421      */
 422     String constructComponentName() {
 423         synchronized (Scrollbar.class) {
 424             return base + nameCounter++;
 425         }
 426     }
 427 
 428     /**
 429      * Creates the <code>Scrollbar</code>'s peer.  The peer allows you to modify
 430      * the appearance of the <code>Scrollbar</code> without changing any of its
 431      * functionality.
 432      */
 433     public void addNotify() {
 434         synchronized (getTreeLock()) {
 435             if (peer == null)
 436                 peer = getComponentFactory().createScrollbar(this);
 437             super.addNotify();
 438         }
 439     }
 440 
 441     /**
 442      * Returns the orientation of this scroll bar.
 443      *
 444      * @return    the orientation of this scroll bar, either
 445      *               <code>Scrollbar.HORIZONTAL</code> or
 446      *               <code>Scrollbar.VERTICAL</code>
 447      * @see       java.awt.Scrollbar#setOrientation
 448      */
 449     public int getOrientation() {
 450         return orientation;
 451     }
 452 
 453     /**
 454      * Sets the orientation for this scroll bar.
 455      *
 456      * @param orientation  the orientation of this scroll bar, either