1/*
2 * Copyright (c) 1998, 2002, 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#include "awt_AWTEvent.h"
27#include "awt_Component.h"
28#include <java_awt_AWTEvent.h>
29
30/************************************************************************
31 * AwtAWTEvent fields
32 */
33
34jfieldID AwtAWTEvent::bdataID;
35jfieldID AwtAWTEvent::idID;
36jfieldID AwtAWTEvent::consumedID;
37
38/************************************************************************
39 * AwtAWTEvent static methods
40 */
41
42void AwtAWTEvent::saveMSG(JNIEnv *env, MSG *pMsg, jobject jevent)
43{
44    if (env->EnsureLocalCapacity(1) < 0) {
45        return;
46    }
47    jbyteArray bdata = env->NewByteArray(sizeof(MSG));
48    if(bdata == 0) {
49        throw std::bad_alloc();
50    }
51    env->SetByteArrayRegion(bdata, 0, sizeof(MSG), (jbyte *)pMsg);
52    DASSERT(AwtAWTEvent::bdataID);
53    env->SetObjectField(jevent, AwtAWTEvent::bdataID,  bdata);
54    env->DeleteLocalRef(bdata);
55}
56
57/************************************************************************
58 * AwtEvent native methods
59 */
60
61extern "C" {
62
63/*
64 * Class:     java_awt_AWTEvent
65 * Method:    initIDs
66 * Signature: ()V
67 */
68JNIEXPORT void JNICALL
69Java_java_awt_AWTEvent_initIDs(JNIEnv *env, jclass cls)
70{
71    TRY;
72
73    AwtAWTEvent::bdataID = env->GetFieldID(cls, "bdata", "[B");
74    DASSERT(AwtAWTEvent::bdataID != NULL);
75    CHECK_NULL(AwtAWTEvent::bdataID);
76
77    AwtAWTEvent::idID = env->GetFieldID(cls, "id", "I");
78    DASSERT(AwtAWTEvent::idID != NULL);
79    CHECK_NULL(AwtAWTEvent::idID);
80
81    AwtAWTEvent::consumedID = env->GetFieldID(cls, "consumed", "Z");
82    DASSERT(AwtAWTEvent::consumedID != NULL);
83    CHECK_NULL(AwtAWTEvent::consumedID);
84
85    CATCH_BAD_ALLOC;
86}
87
88/*
89 * Class:     java_awt_AWTEvent
90 * Method:    nativeSetSource
91 * Signature: (Ljava/awt/peer/ComponentPeer;)V
92 */
93JNIEXPORT void JNICALL Java_java_awt_AWTEvent_nativeSetSource
94    (JNIEnv *env, jobject self, jobject newSource)
95{
96    TRY;
97
98    JNI_CHECK_NULL_RETURN(self, "null AWTEvent");
99
100    MSG *pMsg;
101
102    jbyteArray bdata = (jbyteArray)
103        env->GetObjectField(self, AwtAWTEvent::bdataID);
104    if (bdata != NULL) {
105        jboolean dummy;
106        PDATA pData;
107        JNI_CHECK_PEER_RETURN(newSource);
108        AwtComponent *p = (AwtComponent *)pData;
109        HWND hwnd = p->GetHWnd();
110
111        pMsg = (MSG *)env->GetPrimitiveArrayCritical(bdata, &dummy);
112        if (pMsg == NULL) {
113            throw std::bad_alloc();
114        }
115        pMsg->hwnd = hwnd;
116        env->ReleasePrimitiveArrayCritical(bdata, (void *)pMsg, 0);
117    }
118
119    CATCH_BAD_ALLOC;
120}
121
122} /* extern "C" */
123