JSContext (moe.platform.ios API)

java.lang.Object
- org.moe.natj.general.NativeObject
- - org.moe.natj.objc.ObjCObject
  - - apple.NSObject
    - - apple.javascriptcore.JSContext

All Implemented Interfaces:

NSObject
```
public class JSContext
extends NSObject
```
[@interface]
A JSContext is a JavaScript execution environment. All JavaScript execution takes place within a context, and all JavaScript values are tied to a context.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface JSContext.Block_exceptionHandler_ret

static interface JSContext.Block_setExceptionHandler
- Nested classes/interfaces inherited from class apple.NSObject
  NSObject.Function_instanceMethodForSelector_ret, NSObject.Function_methodForSelector_ret

Nested Classes
Modifier and Type	Class and Description
`static interface`	`JSContext.Block_exceptionHandler_ret`
`static interface`	`JSContext.Block_setExceptionHandler`

Constructor Summary

Constructors
Modifier Constructor and Description

protected JSContext(org.moe.natj.general.Pointer peer)

Constructors
Modifier	Constructor and Description
`protected`	`JSContext(org.moe.natj.general.Pointer peer)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`accessInstanceVariablesDirectly()`
`static JSContext`	`alloc()`
`static JSContext`	`allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)`
`static boolean`	`automaticallyNotifiesObserversForKey(java.lang.String key)`
`static void`	`cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)`
`static void`	`cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget, org.moe.natj.objc.SEL aSelector, java.lang.Object anArgument)`
`static NSArray<java.lang.String>`	`classFallbacksForKeyedArchiver()`
`static org.moe.natj.objc.Class`	`classForKeyedUnarchiver()`
`static JSContext`	`contextWithJSGlobalContextRef(JSGlobalContextRef jsGlobalContextRef)` Create a JSContext, wrapping its C API counterpart.
`static NSArray<?>`	`currentArguments()` Get the arguments to the current callback.
`static JSValue`	`currentCallee()` Get the JavaScript function that is currently executing.
`static JSContext`	`currentContext()` [@methodgroup] Callback Accessors
`static JSValue`	`currentThis()` Get the `this` value of the currently executing method.
`static java.lang.String`	`debugDescription_static()`
`static java.lang.String`	`description_static()`
`JSValue`	`evaluateScript(java.lang.String script)` [@methodgroup] Evaluating Scripts
`JSValue`	`evaluateScriptWithSourceURL(java.lang.String script, NSURL sourceURL)` Evaluate a string of JavaScript code, with a URL for the script's source file.
`JSValue`	`exception()` [@property]
`JSContext.Block_exceptionHandler_ret`	`exceptionHandler()` [@property]
`JSValue`	`globalObject()` [@property]
`static long`	`hash_static()`
`JSContext`	`init()` [@methodgroup] Creating New JSContexts
`JSContext`	`initWithVirtualMachine(JSVirtualMachine virtualMachine)` Create a JSContext in the specified virtual machine.
`static NSObject.Function_instanceMethodForSelector_ret`	`instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)`
`static NSMethodSignature`	`instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)`
`static boolean`	`instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)`
`static boolean`	`isSubclassOfClass(org.moe.natj.objc.Class aClass)`
`JSGlobalContextRef`	`JSGlobalContextRef()` [@property]
`static NSSet<java.lang.String>`	`keyPathsForValuesAffectingValueForKey(java.lang.String key)`
`java.lang.String`	`name()` [@property]
`static JSContext`	`new_objc()`
`JSValue`	`objectForKeyedSubscript(java.lang.Object key)` Get a particular property on the global object.
`static boolean`	`resolveClassMethod(org.moe.natj.objc.SEL sel)`
`static boolean`	`resolveInstanceMethod(org.moe.natj.objc.SEL sel)`
`void`	`setException(JSValue value)` [@property]
`void`	`setExceptionHandler(JSContext.Block_setExceptionHandler value)` [@property]
`void`	`setName(java.lang.String value)` [@property]
`void`	`setObjectForKeyedSubscript(java.lang.Object object, NSObject key)` Set a particular property on the global object.
`static void`	`setVersion_static(long aVersion)`
`static org.moe.natj.objc.Class`	`superclass_static()`
`static long`	`version_static()`
`JSVirtualMachine`	`virtualMachine()` [@property]

Methods inherited from class apple.NSObject
accessibilityActivate, accessibilityActivationPoint, accessibilityAssistiveTechnologyFocusedIdentifiers, accessibilityAttributedHint, accessibilityAttributedLabel, accessibilityAttributedUserInputLabels, accessibilityAttributedValue, accessibilityContainerType, accessibilityCustomActions, accessibilityCustomRotors, accessibilityDecrement, accessibilityDragSourceDescriptors, accessibilityDropPointDescriptors, accessibilityElementAtIndex, accessibilityElementCount, accessibilityElementDidBecomeFocused, accessibilityElementDidLoseFocus, accessibilityElementIsFocused, accessibilityElements, accessibilityElementsHidden, accessibilityFrame, accessibilityHint, accessibilityIncrement, accessibilityLabel, accessibilityLanguage, accessibilityNavigationStyle, accessibilityPath, accessibilityPerformEscape, accessibilityPerformMagicTap, accessibilityRespondsToUserInteraction, accessibilityScroll, accessibilityTextualContext, accessibilityTraits, accessibilityUserInputLabels, accessibilityValue, accessibilityViewIsModal, addObserverForKeyPathOptionsContext, attemptRecoveryFromErrorOptionIndex, attemptRecoveryFromErrorOptionIndexDelegateDidRecoverSelectorContextInfo, autoContentAccessingProxy, awakeAfterUsingCoder, awakeFromNib, class_objc, classForCoder, classForKeyedArchiver, copy, dealloc, debugDescription, description, dictionaryWithValuesForKeys, didChangeValueForKey, didChangeValueForKeyWithSetMutationUsingObjects, didChangeValuesAtIndexesForKey, doesNotRecognizeSelector, fileManagerShouldProceedAfterError, fileManagerWillProcessPath, finalize_objc, forwardingTargetForSelector, forwardInvocation, hash, indexOfAccessibilityElement, isAccessibilityElement, isEqual, isKindOfClass, isMemberOfClass, isProxy, methodForSelector, methodSignatureForSelector, mutableArrayValueForKey, mutableArrayValueForKeyPath, mutableCopy, mutableOrderedSetValueForKey, mutableOrderedSetValueForKeyPath, mutableSetValueForKey, mutableSetValueForKeyPath, observationInfo, observeValueForKeyPathOfObjectChangeContext, performSelector, performSelectorInBackgroundWithObject, performSelectorOnMainThreadWithObjectWaitUntilDone, performSelectorOnMainThreadWithObjectWaitUntilDoneModes, performSelectorOnThreadWithObjectWaitUntilDone, performSelectorOnThreadWithObjectWaitUntilDoneModes, performSelectorWithObject, performSelectorWithObjectAfterDelay, performSelectorWithObjectAfterDelayInModes, performSelectorWithObjectWithObject, prepareForInterfaceBuilder, provideImageDataBytesPerRowOrigin_Size_UserInfo, removeObserverForKeyPath, removeObserverForKeyPathContext, replacementObjectForCoder, replacementObjectForKeyedArchiver, respondsToSelector, self, setAccessibilityActivationPoint, setAccessibilityAttributedHint, setAccessibilityAttributedLabel, setAccessibilityAttributedUserInputLabels, setAccessibilityAttributedValue, setAccessibilityContainerType, setAccessibilityCustomActions, setAccessibilityCustomRotors, setAccessibilityDragSourceDescriptors, setAccessibilityDropPointDescriptors, setAccessibilityElements, setAccessibilityElementsHidden, setAccessibilityFrame, setAccessibilityHint, setAccessibilityLabel, setAccessibilityLanguage, setAccessibilityNavigationStyle, setAccessibilityPath, setAccessibilityRespondsToUserInteraction, setAccessibilityTextualContext, setAccessibilityTraits, setAccessibilityUserInputLabels, setAccessibilityValue, setAccessibilityViewIsModal, setIsAccessibilityElement, setNilValueForKey, setObservationInfo, setShouldGroupAccessibilityChildren, setValueForKey, setValueForKeyPath, setValueForUndefinedKey, setValuesForKeysWithDictionary, shouldGroupAccessibilityChildren, superclass, validateValueForKeyError, validateValueForKeyPathError, valueForKey, valueForKeyPath, valueForUndefinedKey, willChangeValueForKey, willChangeValueForKeyWithSetMutationUsingObjects, willChangeValuesAtIndexesForKey

Methods inherited from class org.moe.natj.objc.ObjCObject
equals, toString

Methods inherited from class org.moe.natj.general.NativeObject
finalize, getPeer, getPeerPointer

Methods inherited from class java.lang.Object
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - JSContext
```
protected JSContext(org.moe.natj.general.Pointer peer)
```
- Method Detail
  - accessInstanceVariablesDirectly
```
public static boolean accessInstanceVariablesDirectly()
```
  - alloc
```
public static JSContext alloc()
```
  - allocWithZone
```
public static JSContext allocWithZone(org.moe.natj.general.ptr.VoidPtr zone)
```
  - automaticallyNotifiesObserversForKey
```
public static boolean automaticallyNotifiesObserversForKey(java.lang.String key)
```
  - cancelPreviousPerformRequestsWithTarget
```
public static void cancelPreviousPerformRequestsWithTarget(java.lang.Object aTarget)
```
  - cancelPreviousPerformRequestsWithTargetSelectorObject
```
public static void cancelPreviousPerformRequestsWithTargetSelectorObject(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)
```
  - classFallbacksForKeyedArchiver
```
public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()
```
  - classForKeyedUnarchiver
```
public static org.moe.natj.objc.Class classForKeyedUnarchiver()
```
  - contextWithJSGlobalContextRef
```
public static JSContext contextWithJSGlobalContextRef(JSGlobalContextRef jsGlobalContextRef)
```
    Create a JSContext, wrapping its C API counterpart.
    
    Returns:
    
    The JSContext equivalent of the provided JSGlobalContextRef.
  - currentArguments
```
public static NSArray<?> currentArguments()
```
    Get the arguments to the current callback.
    This method may be called from within an Objective-C block or method invoked as a callback from JavaScript to retrieve the callback's arguments, objects in the returned array are instances of JSValue. Outside of a callback from JavaScript this method will return nil.
    
    Returns:
    
    An NSArray of the arguments nil if there is no current callback.
  - currentCallee
```
public static JSValue currentCallee()
```
    Get the JavaScript function that is currently executing.
    This method may be called from within an Objective-C block or method invoked as a callback from JavaScript to retrieve the callback's context. Outside of a callback from JavaScript this method will return nil.
    
    Returns:
    
    The currently executing JavaScript function or nil if there isn't one.
  - currentContext
```
public static JSContext currentContext()
```
    [@methodgroup] Callback Accessors
    Get the JSContext that is currently executing.
    This method may be called from within an Objective-C block or method invoked as a callback from JavaScript to retrieve the callback's context. Outside of a callback from JavaScript this method will return nil.
    
    Returns:
    
    The currently executing JSContext or nil if there isn't one.
  - currentThis
```
public static JSValue currentThis()
```
    Get the this value of the currently executing method.
    This method may be called from within an Objective-C block or method invoked as a callback from JavaScript to retrieve the callback's this value. Outside of a callback from JavaScript this method will return nil.
    
    Returns:
    
    The current this value or nil if there isn't one.
  - debugDescription_static
```
public static java.lang.String debugDescription_static()
```
  - description_static
```
public static java.lang.String description_static()
```
  - hash_static
```
public static long hash_static()
```
  - instanceMethodForSelector
```
public static NSObject.Function_instanceMethodForSelector_ret instanceMethodForSelector(org.moe.natj.objc.SEL aSelector)
```
  - instanceMethodSignatureForSelector
```
public static NSMethodSignature instanceMethodSignatureForSelector(org.moe.natj.objc.SEL aSelector)
```
  - instancesRespondToSelector
```
public static boolean instancesRespondToSelector(org.moe.natj.objc.SEL aSelector)
```
  - isSubclassOfClass
```
public static boolean isSubclassOfClass(org.moe.natj.objc.Class aClass)
```
  - keyPathsForValuesAffectingValueForKey
```
public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey(java.lang.String key)
```
  - new_objc
```
public static JSContext new_objc()
```
  - resolveClassMethod
```
public static boolean resolveClassMethod(org.moe.natj.objc.SEL sel)
```
  - resolveInstanceMethod
```
public static boolean resolveInstanceMethod(org.moe.natj.objc.SEL sel)
```
  - setVersion_static
```
public static void setVersion_static(long aVersion)
```
  - superclass_static
```
public static org.moe.natj.objc.Class superclass_static()
```
  - version_static
```
public static long version_static()
```
  - JSGlobalContextRef
```
public JSGlobalContextRef JSGlobalContextRef()
```
    [@property]
    Get the C API counterpart wrapped by a JSContext.
    
    Returns:
    
    The C API equivalent of this JSContext.
  - evaluateScript
```
public JSValue evaluateScript(java.lang.String script)
```
    [@methodgroup] Evaluating Scripts
    Evaluate a string of JavaScript code.
    
    Parameters:
    
    script - A string containing the JavaScript code to evaluate.
    
    Returns:
    
    The last value generated by the script.
  - evaluateScriptWithSourceURL
```
public JSValue evaluateScriptWithSourceURL(java.lang.String script,
                                           NSURL sourceURL)
```
    Evaluate a string of JavaScript code, with a URL for the script's source file.
    
    Parameters:
    
    script - A string containing the JavaScript code to evaluate.
    
    sourceURL - A URL for the script's source file. Used by debuggers and when reporting exceptions. This parameter is informative only: it does not change the behavior of the script.
    
    Returns:
    
    The last value generated by the script.
  - exception
```
public JSValue exception()
```
    [@property]
    The exception property may be used to throw an exception to JavaScript.
    Before a callback is made from JavaScript to an Objective-C block or method, the prior value of the exception property will be preserved and the property will be set to nil. After the callback has completed the new value of the exception property will be read, and prior value restored. If the new value of exception is not nil, the callback will result in that value being thrown.
    This property may also be used to check for uncaught exceptions arising from API function calls (since the default behaviour of exceptionHandler is to assign an uncaught exception to this property).
  - exceptionHandler
```
public JSContext.Block_exceptionHandler_ret exceptionHandler()
```
    [@property]
    If a call to an API function results in an uncaught JavaScript exception, the exceptionHandler block will be invoked. The default implementation for the exception handler will store the exception to the exception property on context. As a consequence the default behaviour is for uncaught exceptions occurring within a callback from JavaScript to be rethrown upon return. Setting this value to nil will cause all exceptions occurring within a callback from JavaScript to be silently caught.
  - globalObject
```
public JSValue globalObject()
```
    [@property]
    Get the global object of the context.
    This method retrieves the global object of the JavaScript execution context. Instances of JSContext originating from WebKit will return a reference to the WindowProxy object.
    
    Returns:
    
    The global object.
  - init
```
public JSContext init()
```
    [@methodgroup] Creating New JSContexts
    Create a JSContext.
    
    Overrides:
    
    init in class NSObject
    
    Returns:
    
    The new context.
  - initWithVirtualMachine
```
public JSContext initWithVirtualMachine(JSVirtualMachine virtualMachine)
```
    Create a JSContext in the specified virtual machine.
    
    Parameters:
    
    virtualMachine - The JSVirtualMachine in which the context will be created.
    
    Returns:
    
    The new context.
  - name
```
public java.lang.String name()
```
    [@property]
    Name of the JSContext. Exposed when remote debugging the context.
  - objectForKeyedSubscript
```
public JSValue objectForKeyedSubscript(java.lang.Object key)
```
    Get a particular property on the global object.
    
    Returns:
    
    The JSValue for the global object's property.
  - setException
```
public void setException(JSValue value)
```
    [@property]
    The exception property may be used to throw an exception to JavaScript.
    Before a callback is made from JavaScript to an Objective-C block or method, the prior value of the exception property will be preserved and the property will be set to nil. After the callback has completed the new value of the exception property will be read, and prior value restored. If the new value of exception is not nil, the callback will result in that value being thrown.
    This property may also be used to check for uncaught exceptions arising from API function calls (since the default behaviour of exceptionHandler is to assign an uncaught exception to this property).
  - setExceptionHandler
```
public void setExceptionHandler(JSContext.Block_setExceptionHandler value)
```
    [@property]
    If a call to an API function results in an uncaught JavaScript exception, the exceptionHandler block will be invoked. The default implementation for the exception handler will store the exception to the exception property on context. As a consequence the default behaviour is for uncaught exceptions occurring within a callback from JavaScript to be rethrown upon return. Setting this value to nil will cause all exceptions occurring within a callback from JavaScript to be silently caught.
  - setName
```
public void setName(java.lang.String value)
```
    [@property]
    Name of the JSContext. Exposed when remote debugging the context.
  - setObjectForKeyedSubscript
```
public void setObjectForKeyedSubscript(java.lang.Object object,
                                       NSObject key)
```
    Set a particular property on the global object.
  - virtualMachine
```
public JSVirtualMachine virtualMachine()
```
    [@property]
    All instances of JSContext are associated with a JSVirtualMachine.

Class JSContext

Nested Class Summary

Nested classes/interfaces inherited from class apple.NSObject

Constructor Summary

Method Summary

Methods inherited from class apple.NSObject

Methods inherited from class org.moe.natj.objc.ObjCObject

Methods inherited from class org.moe.natj.general.NativeObject

Methods inherited from class java.lang.Object

Constructor Detail

JSContext

Method Detail

accessInstanceVariablesDirectly

alloc

allocWithZone

automaticallyNotifiesObserversForKey

cancelPreviousPerformRequestsWithTarget

cancelPreviousPerformRequestsWithTargetSelectorObject

classFallbacksForKeyedArchiver

classForKeyedUnarchiver

contextWithJSGlobalContextRef

currentArguments

currentCallee

currentContext

currentThis

debugDescription_static

description_static

hash_static

instanceMethodForSelector

instanceMethodSignatureForSelector

instancesRespondToSelector

isSubclassOfClass

keyPathsForValuesAffectingValueForKey

new_objc

resolveClassMethod

resolveInstanceMethod

setVersion_static

superclass_static

version_static

JSGlobalContextRef

evaluateScript

evaluateScriptWithSourceURL

exception

exceptionHandler

globalObject

init

initWithVirtualMachine

name

objectForKeyedSubscript

setException

setExceptionHandler

setName

setObjectForKeyedSubscript

virtualMachine