1 /*
2 * Copyright 2009, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "bindings/modules/v8/V8Geolocation.h"
28
29 #include "bindings/modules/v8/V8PositionCallback.h"
30 #include "bindings/modules/v8/V8PositionErrorCallback.h"
31 #include "bindings/v8/V8Binding.h"
32 #include "bindings/v8/V8Callback.h"
33 #include "modules/geolocation/Geolocation.h"
34
35 using namespace WTF;
36
37 namespace WebCore {
38
createPositionOptions(v8::Local<v8::Value> value,v8::Isolate * isolate,bool & succeeded,ExceptionState & exceptionState)39 static PositionOptions* createPositionOptions(v8::Local<v8::Value> value, v8::Isolate* isolate, bool& succeeded, ExceptionState& exceptionState)
40 {
41 succeeded = true;
42
43 // Create default options.
44 PositionOptions* options = PositionOptions::create();
45
46 // Argument is optional (hence undefined is allowed), and null is allowed.
47 if (isUndefinedOrNull(value)) {
48 // Use default options.
49 return options;
50 }
51
52 // Given the above test, this will always yield an object.
53 v8::Local<v8::Object> object = value->ToObject();
54
55 // For all three properties, we apply the following ...
56 // - If the getter or the property's valueOf method throws an exception, we
57 // quit so as not to risk overwriting the exception.
58 // - If the value is absent or undefined, we don't override the default.
59 v8::Local<v8::Value> enableHighAccuracyValue = object->Get(v8AtomicString(isolate, "enableHighAccuracy"));
60 if (enableHighAccuracyValue.IsEmpty()) {
61 succeeded = false;
62 return nullptr;
63 }
64 if (!enableHighAccuracyValue->IsUndefined()) {
65 v8::Local<v8::Boolean> enableHighAccuracyBoolean = enableHighAccuracyValue->ToBoolean();
66 if (enableHighAccuracyBoolean.IsEmpty()) {
67 succeeded = false;
68 return nullptr;
69 }
70 options->setEnableHighAccuracy(enableHighAccuracyBoolean->Value());
71 }
72
73 v8::Local<v8::Value> timeoutValue = object->Get(v8AtomicString(isolate, "timeout"));
74 if (timeoutValue.IsEmpty()) {
75 succeeded = false;
76 return nullptr;
77 }
78 if (!timeoutValue->IsUndefined()) {
79 v8::Local<v8::Number> timeoutNumber = timeoutValue->ToNumber();
80 if (timeoutNumber.IsEmpty()) {
81 succeeded = false;
82 return nullptr;
83 }
84 if (timeoutNumber->Value() <= 0)
85 options->setTimeout(0);
86 else
87 options->setTimeout(toUInt32(timeoutValue, Clamp, exceptionState));
88 }
89
90 v8::Local<v8::Value> maximumAgeValue = object->Get(v8AtomicString(isolate, "maximumAge"));
91 if (maximumAgeValue.IsEmpty()) {
92 succeeded = false;
93 return nullptr;
94 }
95 if (!maximumAgeValue->IsUndefined()) {
96 v8::Local<v8::Number> maximumAgeNumber = maximumAgeValue->ToNumber();
97 if (maximumAgeNumber.IsEmpty()) {
98 succeeded = false;
99 return nullptr;
100 }
101 if (maximumAgeNumber->Value() <= 0)
102 options->setMaximumAge(0);
103 else
104 options->setMaximumAge(toUInt32(maximumAgeValue, Clamp, exceptionState));
105 }
106
107 return options;
108 }
109
getCurrentPositionMethodCustom(const v8::FunctionCallbackInfo<v8::Value> & info)110 void V8Geolocation::getCurrentPositionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
111 {
112 bool succeeded = false;
113
114 ExceptionState exceptionState(ExceptionState::ExecutionContext, "getCurrentPosition", "Geolocation", info.Holder(), info.GetIsolate());
115
116 OwnPtr<PositionCallback> positionCallback = createFunctionOnlyCallback<V8PositionCallback>(info[0], 1, succeeded, info.GetIsolate(), exceptionState);
117 if (!succeeded)
118 return;
119 ASSERT(positionCallback);
120
121 // Argument is optional (hence undefined is allowed), and null is allowed.
122 OwnPtr<PositionErrorCallback> positionErrorCallback = createFunctionOnlyCallback<V8PositionErrorCallback>(info[1], 2, succeeded, info.GetIsolate(), exceptionState, CallbackAllowUndefined | CallbackAllowNull);
123 if (!succeeded)
124 return;
125
126 PositionOptions* positionOptions = createPositionOptions(info[2], info.GetIsolate(), succeeded, exceptionState);
127 if (!succeeded)
128 return;
129 ASSERT(positionOptions);
130
131 Geolocation* geolocation = V8Geolocation::toNative(info.Holder());
132 geolocation->getCurrentPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions);
133 }
134
watchPositionMethodCustom(const v8::FunctionCallbackInfo<v8::Value> & info)135 void V8Geolocation::watchPositionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
136 {
137 bool succeeded = false;
138
139 ExceptionState exceptionState(ExceptionState::ExecutionContext, "watchCurrentPosition", "Geolocation", info.Holder(), info.GetIsolate());
140
141 OwnPtr<PositionCallback> positionCallback = createFunctionOnlyCallback<V8PositionCallback>(info[0], 1, succeeded, info.GetIsolate(), exceptionState);
142 if (!succeeded)
143 return;
144 ASSERT(positionCallback);
145
146 // Argument is optional (hence undefined is allowed), and null is allowed.
147 OwnPtr<PositionErrorCallback> positionErrorCallback = createFunctionOnlyCallback<V8PositionErrorCallback>(info[1], 2, succeeded, info.GetIsolate(), exceptionState, CallbackAllowUndefined | CallbackAllowNull);
148 if (!succeeded)
149 return;
150
151 PositionOptions* positionOptions = createPositionOptions(info[2], info.GetIsolate(), succeeded, exceptionState);
152 if (!succeeded)
153 return;
154 ASSERT(positionOptions);
155
156 Geolocation* geolocation = V8Geolocation::toNative(info.Holder());
157 int watchId = geolocation->watchPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions);
158 v8SetReturnValue(info, watchId);
159 }
160
161 } // namespace WebCore
162