1 /*
   2  * Copyright (c) 2002, 2018, 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 package sun.awt.X11;
  26 
  27 import java.awt.*;
  28 import java.awt.peer.*;
  29 
  30 import sun.awt.AWTAccessor;
  31 import sun.awt.AWTAccessor.ComponentAccessor;
  32 import sun.awt.SunGraphicsCallback;
  33 
  34 public class XPanelPeer extends XCanvasPeer implements PanelPeer {
  35 
  36     XEmbeddingContainer embedder = null; //new XEmbeddingContainer();
  37     /**
  38      * Embeds the given window into container using XEmbed protocol
  39      */
  40     public void xembed(long window) {
  41         if (embedder != null) {
  42             embedder.add(window);
  43         }
  44     }
  45     XPanelPeer() {}
  46 
  47     XPanelPeer(XCreateWindowParams params) {
  48         super(params);
  49     }
  50 
  51     XPanelPeer(Component target) {
  52         super(target);
  53     }
  54 
  55     void postInit(XCreateWindowParams params) {
  56         super.postInit(params);
  57         if (embedder != null) {
  58             embedder.install(this);
  59         }
  60     }
  61 
  62     public Insets getInsets() {
  63         return new Insets(0, 0, 0, 0);
  64     }
  65     public void paint(Graphics g) {
  66         super.paint(g);
  67         SunGraphicsCallback.PaintHeavyweightComponentsCallback.getInstance().
  68             runComponents(((Container)target).getComponents(), g,
  69                           SunGraphicsCallback.LIGHTWEIGHTS |
  70                           SunGraphicsCallback.HEAVYWEIGHTS);
  71     }
  72     public void print(Graphics g) {
  73         super.print(g);
  74         SunGraphicsCallback.PrintHeavyweightComponentsCallback.getInstance().
  75             runComponents(((Container)target).getComponents(), g,
  76                           SunGraphicsCallback.LIGHTWEIGHTS |
  77                           SunGraphicsCallback.HEAVYWEIGHTS);
  78 
  79     }
  80 
  81     public void setBackground(Color c) {
  82         Component comp;
  83         int i;
  84 
  85         Container cont = (Container) target;
  86         final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
  87         synchronized(target.getTreeLock()) {
  88             int n = cont.getComponentCount();
  89             for(i=0; i < n; i++) {
  90                 comp = cont.getComponent(i);
  91                 ComponentPeer peer = acc.getPeer(comp);
  92                 if (peer != null) {
  93                     Color color = comp.getBackground();
  94                     if (color == null || color.equals(c)) {
  95                         peer.setBackground(c);
  96                     }
  97                 }
  98             }
  99         }
 100         super.setBackground(c);
 101     }
 102 
 103     public void setForeground(Color c) {
 104         setForegroundForHierarchy((Container) target, c);
 105     }
 106 
 107     private void setForegroundForHierarchy(Container cont, Color c) {
 108         synchronized(target.getTreeLock()) {
 109             final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
 110             int n = cont.getComponentCount();
 111             for(int i=0; i < n; i++) {
 112                 Component comp = cont.getComponent(i);
 113                 Color color = comp.getForeground();
 114                 if (color == null || color.equals(c)) {
 115                     ComponentPeer cpeer = acc.getPeer(comp);
 116                     if (cpeer != null) {
 117                         cpeer.setForeground(c);
 118                     }
 119                     if (cpeer instanceof LightweightPeer
 120                         && comp instanceof Container)
 121                     {
 122                         setForegroundForHierarchy((Container) comp, c);
 123                     }
 124                 }
 125             }
 126         }
 127     }
 128 
 129     public void dispose() {
 130         if (embedder != null) {
 131             embedder.deinstall();
 132         }
 133         super.dispose();
 134     }
 135 
 136     protected boolean shouldFocusOnClick() {
 137         // Return false if this container has children so in that case it won't
 138         // be focused. Return true otherwise.
 139         return ((Container)target).getComponentCount() == 0;
 140     }
 141 }