1 /*
   2  * Copyright (c) 2011, 2013, 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
  23  * questions.
  24  */
  25 
  26 
  27 package sun.lwawt;
  28 
  29 import java.awt.Label;
  30 import java.awt.peer.LabelPeer;
  31 
  32 import javax.swing.JLabel;
  33 import javax.swing.SwingConstants;
  34 
  35 /**
  36  * Lightweight implementation of {@link LabelPeer}. Delegates most of the work
  37  * to the {@link JLabel}.
  38  */
  39 final class LWLabelPeer extends LWComponentPeer<Label, JLabel>
  40         implements LabelPeer {
  41 
  42     LWLabelPeer(final Label target, final PlatformComponent platformComponent) {
  43         super(target, platformComponent);
  44     }
  45 
  46     @Override
  47     JLabel createDelegate() {
  48         return new JLabel();
  49     }
  50 
  51     @Override
  52     void initializeImpl() {
  53         super.initializeImpl();
  54         setText(getTarget().getText());
  55         setAlignment(getTarget().getAlignment());
  56     }
  57 
  58     @Override
  59     public void setText(final String label) {
  60         synchronized (getDelegateLock()) {
  61             getDelegate().setText(label);
  62         }
  63     }
  64 
  65     @Override
  66     public void setAlignment(final int alignment) {
  67         synchronized (getDelegateLock()) {
  68             getDelegate().setHorizontalAlignment(convertAlignment(alignment));
  69         }
  70     }
  71 
  72     /**
  73      * Converts {@code Label} alignment constant to the {@code JLabel} constant.
  74      * If wrong Label alignment provided returns default alignment.
  75      *
  76      * @param alignment {@code Label} constant.
  77      *
  78      * @return {@code JLabel} constant.
  79      */
  80     private static int convertAlignment(final int alignment) {
  81         switch (alignment) {
  82             case Label.CENTER:
  83                 return SwingConstants.CENTER;
  84             case Label.RIGHT:
  85                 return SwingConstants.RIGHT;
  86             default:
  87                 return SwingConstants.LEFT;
  88         }
  89     }
  90 }