1/*
2 * Copyright (c) 2003, 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
23 * questions.
24 */
25
26package sun.awt.X11;
27
28import java.awt.*;
29import java.util.HashMap;
30import java.awt.event.KeyEvent;
31import sun.awt.AWTAccessor;
32
33public class XEmbeddingContainer extends XEmbedHelper implements XEventDispatcher {
34    HashMap<Long, java.awt.peer.ComponentPeer> children = new HashMap<>();
35
36    XEmbeddingContainer() {
37    }
38
39    XWindow embedder;
40    void install(XWindow embedder) {
41        this.embedder = embedder;
42        XToolkit.addEventDispatcher(embedder.getWindow(), this);
43    }
44    void deinstall() {
45        XToolkit.removeEventDispatcher(embedder.getWindow(), this);
46    }
47
48    void add(long child) {
49        if (checkXEmbed(child)) {
50            Component proxy = createChildProxy(child);
51            ((Container)embedder.getTarget()).add("Center", proxy);
52            XEmbeddedFramePeer peer = AWTAccessor.getComponentAccessor()
53                                                 .getPeer(proxy);
54            if (peer != null) {
55                children.put(Long.valueOf(child), peer);
56            }
57        }
58    }
59
60    Component createChildProxy(long child) {
61        return new XEmbedChildProxy(this, child);
62    }
63    void notifyChildEmbedded(long child) {
64        sendMessage(child, XEMBED_EMBEDDED_NOTIFY, embedder.getWindow(), XEMBED_VERSION, 0);
65    }
66
67    void childResized(Component child) {
68    }
69
70    boolean checkXEmbed(long child) {
71        long data = unsafe.allocateMemory(8);
72        try {
73            if (XEmbedInfo.getAtomData(child, data, 2)) {
74                int protocol = unsafe.getInt(data);
75                int flags = unsafe.getInt(data);
76                return true;
77            }
78        } finally {
79            unsafe.freeMemory(data);
80        }
81        return false;
82    }
83
84    void detachChild(long child) {
85        // The embedder can unmap the client and reparent the client window
86        // to the root window. If the client receives an ReparentNotify
87        // event, it should check the parent field of the XReparentEvent
88        // structure. If this is the root window of the window's screen, then
89        // the protocol is finished and there is no further interaction. If
90        // it is a window other than the root window, then the protocol
91        // continues with the new parent acting as the embedder window.
92        XToolkit.awtLock();
93        try {
94            XlibWrapper.XUnmapWindow(XToolkit.getDisplay(), child);
95            XlibWrapper.XReparentWindow(XToolkit.getDisplay(), child, XToolkit.getDefaultRootWindow(), 0, 0);
96        }
97        finally {
98            XToolkit.awtUnlock();
99        }
100    }
101
102    void focusGained(long child) {
103        sendMessage(child, XEMBED_FOCUS_IN, XEMBED_FOCUS_CURRENT, 0, 0);
104    }
105    void focusLost(long child) {
106        sendMessage(child, XEMBED_FOCUS_OUT);
107    }
108
109    XEmbedChildProxyPeer getChild(long child) {
110        return (XEmbedChildProxyPeer)children.get(Long.valueOf(child));
111    }
112    public void handleClientMessage(XEvent xev) {
113        XClientMessageEvent msg = xev.get_xclient();
114        if (msg.get_message_type() == XEmbed.getAtom()) {
115            switch ((int)msg.get_data(1)) {
116              case XEMBED_REQUEST_FOCUS:
117                  long child = msg.get_data(2); // Unspecified
118                  getChild(child).requestXEmbedFocus();
119                  break;
120            }
121        }
122    }
123    public void dispatchEvent(XEvent xev) {
124        switch(xev.get_type()) {
125          case XConstants.ClientMessage:
126              handleClientMessage(xev);
127              break;
128        }
129    }
130
131    void forwardKeyEvent(long child, KeyEvent e) {
132        byte[] bdata = AWTAccessor.getAWTEventAccessor().getBData(e);
133        long data = Native.toData(bdata);
134        if (data == 0) {
135            return;
136        }
137        XKeyEvent ke = new XKeyEvent(data);
138        ke.set_window(child);
139        XToolkit.awtLock();
140        try {
141            XlibWrapper.XSendEvent(XToolkit.getDisplay(), child, false, XConstants.NoEventMask, data);
142        }
143        finally {
144            XToolkit.awtUnlock();
145        }
146        XlibWrapper.unsafe.freeMemory(data);
147    }
148}
149