1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DeviceMotionClientImpl.h"
#include "WebViewCore.h"
#include <DeviceMotionController.h>
#include <Frame.h>
#include <JNIHelp.h>
namespace android {
using JSC::Bindings::getJNIEnv;
enum javaServiceClassMethods {
ServiceMethodStart = 0,
ServiceMethodStop,
ServiceMethodSuspend,
ServiceMethodResume,
ServiceMethodCount
};
static jmethodID javaServiceClassMethodIDs[ServiceMethodCount];
DeviceMotionClientImpl::DeviceMotionClientImpl(WebViewCore* webViewCore)
: m_webViewCore(webViewCore)
, m_javaServiceObject(0)
{
ASSERT(m_webViewCore);
}
DeviceMotionClientImpl::~DeviceMotionClientImpl()
{
releaseJavaInstance();
}
jobject DeviceMotionClientImpl::getJavaInstance()
{
// Lazily get the Java object. We can't do this until the WebViewCore is all
// set up.
if (m_javaServiceObject)
return m_javaServiceObject;
JNIEnv* env = getJNIEnv();
ASSERT(m_webViewCore);
jobject object = m_webViewCore->getDeviceMotionService();
if (!object)
return 0;
// Get the Java DeviceMotionService class.
jclass javaServiceClass = env->GetObjectClass(object);
ASSERT(javaServiceClass);
// Set up the methods we wish to call on the Java DeviceMotionService
// class.
javaServiceClassMethodIDs[ServiceMethodStart] =
env->GetMethodID(javaServiceClass, "start", "()V");
javaServiceClassMethodIDs[ServiceMethodStop] =
env->GetMethodID(javaServiceClass, "stop", "()V");
javaServiceClassMethodIDs[ServiceMethodSuspend] =
env->GetMethodID(javaServiceClass, "suspend", "()V");
javaServiceClassMethodIDs[ServiceMethodResume] =
env->GetMethodID(javaServiceClass, "resume", "()V");
env->DeleteLocalRef(javaServiceClass);
m_javaServiceObject = getJNIEnv()->NewGlobalRef(object);
getJNIEnv()->DeleteLocalRef(object);
ASSERT(m_javaServiceObject);
return m_javaServiceObject;
}
void DeviceMotionClientImpl::releaseJavaInstance()
{
if (m_javaServiceObject)
getJNIEnv()->DeleteGlobalRef(m_javaServiceObject);
}
void DeviceMotionClientImpl::startUpdating()
{
jobject javaInstance = getJavaInstance();
if (!javaInstance)
return;
getJNIEnv()->CallVoidMethod(javaInstance, javaServiceClassMethodIDs[ServiceMethodStart]);
}
void DeviceMotionClientImpl::stopUpdating()
{
jobject javaInstance = getJavaInstance();
if (!javaInstance)
return;
getJNIEnv()->CallVoidMethod(javaInstance, javaServiceClassMethodIDs[ServiceMethodStop]);
}
void DeviceMotionClientImpl::onMotionChange(PassRefPtr<DeviceMotionData> motion)
{
m_lastMotion = motion;
m_controller->didChangeDeviceMotion(m_lastMotion.get());
}
void DeviceMotionClientImpl::suspend()
{
jobject javaInstance = getJavaInstance();
if (!javaInstance)
return;
getJNIEnv()->CallVoidMethod(javaInstance, javaServiceClassMethodIDs[ServiceMethodSuspend]);
}
void DeviceMotionClientImpl::resume()
{
jobject javaInstance = getJavaInstance();
if (!javaInstance)
return;
getJNIEnv()->CallVoidMethod(javaInstance, javaServiceClassMethodIDs[ServiceMethodResume]);
}
} // namespace android
|
