Source/bindings/v8/custom/V8PopStateEventCustom.cpp - Issue 331373002: Split bindings/v8/custom into core and modules.

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Issue 331373002: Split bindings/v8/custom into core and modules. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Patch for landing Created 6 years, 6 months ago

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1 /*

2 * Copyright (C) 2010 Google Inc. All rights reserved.

3 *

4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions are

6 * met:

7 *

8 * * Redistributions of source code must retain the above copyright

9 * notice, this list of conditions and the following disclaimer.

10 * * Redistributions in binary form must reproduce the above

11 * copyright notice, this list of conditions and the following disclaimer

12 * in the documentation and/or other materials provided with the

13 * distribution.

14 * * Neither the name of Google Inc. nor the names of its

15 * contributors may be used to endorse or promote products derived from

16 * this software without specific prior written permission.

17 *

18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

29 */

30

31 #include "config.h"

32 #include "bindings/core/v8/V8PopStateEvent.h"

33

34 #include "bindings/core/v8/V8History.h"

35 #include "bindings/v8/SerializedScriptValue.h"

36 #include "bindings/v8/V8HiddenValue.h"

37 #include "core/events/PopStateEvent.h"

38 #include "core/frame/History.h"

39

40 namespace WebCore {

41

42 // Save the state value to a hidden attribute in the V8PopStateEvent, and return it, for convenience.

43 static v8::Handle<v8::Value> cacheState(v8::Handle<v8::Object> popStateEvent, v8 ::Handle<v8::Value> state, v8::Isolate* isolate)

44 {

45 V8HiddenValue::setHiddenValue(isolate, popStateEvent, V8HiddenValue::state(i solate), state);

46 return state;

47 }

48

49 void V8PopStateEvent::stateAttributeGetterCustom(const v8::PropertyCallbackInfo< v8::Value>& info)

50 {

51 v8::Handle<v8::Value> result = V8HiddenValue::getHiddenValue(info.GetIsolate (), info.Holder(), V8HiddenValue::state(info.GetIsolate()));

52

53 if (!result.IsEmpty()) {

54 v8SetReturnValue(info, result);

55 return;

56 }

57

58 PopStateEvent* event = V8PopStateEvent::toNative(info.Holder());

59 History* history = event->history();

60 if (!history \|\| !event->serializedState()) {

61 if (!event->serializedState()) {

62 // If we're in an isolated world and the event was created in the ma in world,

63 // we need to find the 'state' property on the main world wrapper an d clone it.

64 v8::Local<v8::Value> mainWorldState = V8HiddenValue::getHiddenValueF romMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::state(info.GetIsola te()));

65 if (!mainWorldState.IsEmpty())

66 event->setSerializedState(SerializedScriptValue::createAndSwallo wExceptions(mainWorldState, info.GetIsolate()));

67 }

68 if (event->serializedState())

69 result = event->serializedState()->deserialize();

70 else

71 result = v8::Null(info.GetIsolate());

72 v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate ()));

73 return;

74 }

75

76 // There's no cached value from a previous invocation, nor a state value was provided by the

77 // event, but there is a history object, so first we need to see if the stat e object has been

78 // deserialized through the history object already.

79 // The current history state object might've changed in the meantime, so we need to take care

80 // of using the correct one, and always share the same deserialization with history.state.

81

82 bool isSameState = history->isSameAsCurrentState(event->serializedState());

83

84 if (isSameState) {

85 v8::Handle<v8::Object> v8History = toV8(history, info.Holder(), info.Get Isolate()).As<v8::Object>();

86 if (!history->stateChanged()) {

87 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), v8History, V8HiddenValue::state(info.GetIsolate()));

88 if (!result.IsEmpty()) {

89 v8SetReturnValue(info, cacheState(info.Holder(), result, info.Ge tIsolate()));

90 return;

91 }

92 }

93 result = event->serializedState()->deserialize(info.GetIsolate());

94 V8HiddenValue::setHiddenValue(info.GetIsolate(), v8History, V8HiddenValu e::state(info.GetIsolate()), result);

95 } else {

96 result = event->serializedState()->deserialize(info.GetIsolate());

97 }

98

99 v8SetReturnValue(info, cacheState(info.Holder(), result, info.GetIsolate())) ;

100 }

101

102 } // namespace WebCore

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