1 /*
   2  * Copyright (c) 2002, 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
  23  * questions.
  24  */
  25 
  26 package javax.swing.plaf.synth;
  27 
  28 import javax.swing.*;
  29 import javax.swing.plaf.ComboBoxUI;
  30 import javax.swing.plaf.basic.BasicComboPopup;
  31 import java.awt.*;
  32 
  33 
  34 /**
  35  * Synth's ComboPopup.
  36  *
  37  * @author Scott Violet
  38  */
  39 @SuppressWarnings("serial") // Superclass is not serializable across versions
  40 class SynthComboPopup extends BasicComboPopup {
  41     public SynthComboPopup( JComboBox combo ) {
  42         super(combo);
  43     }
  44 
  45     /**
  46      * Configures the list which is used to hold the combo box items in the
  47      * popup. This method is called when the UI class
  48      * is created.
  49      *
  50      * @see #createList
  51      */
  52     @Override
  53     protected void configureList() {
  54         list.setFont( comboBox.getFont() );
  55         list.setCellRenderer( comboBox.getRenderer() );
  56         list.setFocusable( false );
  57         list.setSelectionMode( ListSelectionModel.SINGLE_SELECTION );
  58         int selectedIndex = comboBox.getSelectedIndex();
  59         if ( selectedIndex == -1 ) {
  60             list.clearSelection();
  61         }
  62         else {
  63             list.setSelectedIndex( selectedIndex );
  64             list.ensureIndexIsVisible( selectedIndex );
  65         }
  66         installListListeners();
  67     }
  68 
  69     /**
  70      * @inheritDoc
  71      *
  72      * Overridden to take into account any popup insets specified in
  73      * SynthComboBoxUI
  74      */
  75     @Override
  76     protected Rectangle computePopupBounds(int px, int py, int pw, int ph) {
  77         ComboBoxUI ui = comboBox.getUI();
  78         if (ui instanceof SynthComboBoxUI) {
  79             SynthComboBoxUI sui = (SynthComboBoxUI) ui;
  80             if (sui.popupInsets != null) {
  81                 Insets i = sui.popupInsets;
  82                 return super.computePopupBounds(
  83                         px + i.left,
  84                         py + i.top,
  85                         pw - i.left - i.right,
  86                         ph - i.top - i.bottom);
  87             }
  88         }
  89         return super.computePopupBounds(px, py, pw, ph);
  90     }
  91 }