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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* This file is derived from the Original Code provided by mozilla.org,
* whose Initial Developer is Netscape Communications Corporation. Changes
* to the original file were made by SWT on September 18, 2013 and are marked
* with trailing comment "//SWT-20130918".
*/
#ifndef nsIScriptContext_h__
#define nsIScriptContext_h__
//#include "nscore.h" //SWT-20130918
//#include "nsStringGlue.h" //SWT-20130918
//#include "nsISupports.h" //SWT-20130918
//#include "nsCOMPtr.h" //SWT-20130918
//#include "nsIProgrammingLanguage.h" //SWT-20130918
//#include "jsfriendapi.h" //SWT-20130918
//#include "jspubtd.h" //SWT-20130918
//#include "js/GCAPI.h" //SWT-20130918
class nsIScriptGlobalObject;
class nsIScriptSecurityManager;
class nsIPrincipal;
class nsIAtom;
class nsIArray;
class nsIVariant;
class nsIObjectInputStream;
class nsIObjectOutputStream;
class nsIScriptObjectPrincipal;
class nsIDOMWindow;
class nsIURI;
#define NS_ISCRIPTCONTEXT_IID \
{ 0xef0c91ce, 0x14f6, 0x41c9, \
{ 0xa5, 0x77, 0xa6, 0xeb, 0xdc, 0x6d, 0x44, 0x7b } }
/* This MUST match JSVERSION_DEFAULT. This version stuff if we don't
know what language we have is a little silly... */
#define SCRIPTVERSION_DEFAULT JSVERSION_DEFAULT
#define nsresult int //SWT-20130918
/**
* It is used by the application to initialize a runtime and run scripts.
* A script runtime would implement this interface.
*/
class nsIScriptContext /* : public nsISupports */ //SWT-20130918
{
public:
// NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCRIPTCONTEXT_IID) //SWT-20130918
virtual nsresult QueryInterface(/* const nsIID & uuid, void **result */) = 0; //SWT-20130918
virtual nsresult AddRef(void) = 0; //SWT-20130918
virtual nsresult Release(void) = 0; //SWT-20130918
/**
* Compile and execute a script.
*
* @param aScript a string representing the script to be executed
* @param aScopeObject a script object for the scope to execute in.
* @param aOptions an options object. You probably want to at least set
* filename and line number. The principal is computed
* internally, though 'originPrincipals' may be passed.
* @param aCoerceToString if the return value is not JSVAL_VOID, convert it
* to a string before returning.
* @param aRetValue the result of executing the script. Pass null if you
* don't care about the result. Note that asking for a
* result will deoptimize your script somewhat in many cases.
*/
virtual nsresult EvaluateString(/* const nsAString& aScript, //SWT-20130918
JS::Handle aScopeObject,
JS::CompileOptions& aOptions,
bool aCoerceToString,
JS::Value* aRetValue */) = 0; //SWT-20130918
/**
* Compile a script.
*
* @param aText a PRUnichar buffer containing script source
* @param aTextLength number of characters in aText
* @param aPrincipal the principal that produced the script
* @param aURL the URL or filename for error messages
* @param aLineNo the starting line number of the script for error messages
* @param aVersion the script language version to use when executing
* @param aScriptObject an executable object that's the result of compiling
* the script.
* @param aSaveSource force the source code to be saved by the JS engine in memory
*
* @return NS_OK if the script source was valid and got compiled.
*
**/
virtual nsresult CompileScript(/* const PRUnichar* aText, //SWT-20130918
int32_t aTextLength,
nsIPrincipal* aPrincipal,
const char* aURL,
uint32_t aLineNo,
uint32_t aVersion,
JS::MutableHandle aScriptObject,
bool aSaveSource = false */) = 0; //SWT-20130918
/**
* Execute a precompiled script object.
*
* @param aScriptObject an object representing the script to be executed
* @param aScopeObject an object telling the scope in which to execute,
* or nullptr to use a default scope
* @param aRetValue the result of executing the script, may be null in
* which case no result string is computed
* @param aIsUndefined true if the result of executing the script is the
* undefined value, may be null for "don't care"
*
* @return NS_OK if the script was valid and got executed
*
*/
virtual nsresult ExecuteScript(/* JSScript* aScriptObject, //SWT-20130918
JSObject* aScopeObject */) = 0; //SWT-20130918
/**
* Bind an already-compiled event handler function to the given
* target. Scripting languages with static scoping must re-bind the
* scope chain for aHandler to begin (after the activation scope for
* aHandler itself, typically) with aTarget's scope.
*
* The result of the bind operation is a new handler object, with
* principals now set and scope set as above. This is returned in
* aBoundHandler. When this function is called, aBoundHandler is
* expected to not be holding an object.
*
* @param aTarget an object telling the scope in which to bind the compiled
* event handler function. The context will presumably associate
* this nsISupports with a native script object.
* @param aScope the scope in which the script object for aTarget should be
* looked for.
* @param aHandler the function object to bind, created by an earlier call to
* CompileEventHandler
* @param aBoundHandler [out] the result of the bind operation.
* @return NS_OK if the function was successfully bound
*/
virtual nsresult BindCompiledEventHandler(/* nsISupports* aTarget, //SWT-20130918
JS::Handle aScope,
JS::Handle aHandler,
JS::MutableHandle aBoundHandler */) = 0; //SWT-20130918
/**
* Return the global object.
*
**/
virtual nsIScriptGlobalObject *GetGlobalObject() = 0;
/**
* Return the native script context
*
**/
virtual /* JSContext* */ void* GetNativeContext() = 0; //SWT-20130918
/**
* Return the native global object for this context.
*
**/
virtual /* JSObject* */ void* GetNativeGlobal() = 0; //SWT-20130918
/**
* Initialize the context generally. Does not create a global object.
**/
virtual nsresult InitContext() = 0;
/**
* Check to see if context is as yet intialized. Used to prevent
* reentrancy issues during the initialization process.
*
* @return true if initialized, false if not
*
*/
virtual bool IsContextInitialized() = 0;
/**
* For garbage collected systems, do a synchronous collection pass.
* May be a no-op on other systems
*
* @return NS_OK if the method is successful
*/
virtual void GC(/* JS::gcreason::Reason aReason */) = 0; //SWT-20130918
/**
* Inform the context that a script was evaluated.
* A GC may be done if "necessary."
* This call is necessary if script evaluation is done
* without using the EvaluateScript method.
* @param aTerminated If true then do script termination handling. Within DOM
* this will always be true, but outside callers (such as xpconnect) who
* may do script evaluations nested inside inside DOM script evaluations
* can pass false to avoid premature termination handling.
* @return NS_OK if the method is successful
*/
virtual void ScriptEvaluated(bool aTerminated) = 0;
virtual nsresult Serialize(/* nsIObjectOutputStream* aStream, //SWT-20130918
JS::Handle aScriptObject */) = 0; //SWT-20130918
/* Deserialize a script from a stream.
*/
virtual nsresult Deserialize(/* nsIObjectInputStream* aStream, //SWT-20130918
JS::MutableHandle aResult */) = 0; //SWT-20130918
/**
* Called to disable/enable script execution in this context.
*/
virtual bool GetScriptsEnabled() = 0;
virtual void SetScriptsEnabled(bool aEnabled, bool aFireTimeouts) = 0;
// SetProperty is suspect and jst believes should not be needed. Currenly
// used only for "arguments".
virtual nsresult SetProperty(/* JS::Handle aTarget, //SWT-20130918
const char* aPropName, nsISupports* aVal */) = 0; //SWT-20130918
/**
* Called to set/get information if the script context is
* currently processing a script tag
*/
virtual bool GetProcessingScriptTag() = 0;
virtual void SetProcessingScriptTag(bool aResult) = 0;
/**
* Called to find out if this script context might be executing script.
*/
virtual bool GetExecutingScript() = 0;
/**
* Initialize DOM classes on aGlobalObj, always call
* WillInitializeContext() before calling InitContext(), and always
* call DidInitializeContext() when a context is fully
* (successfully) initialized.
*/
virtual nsresult InitClasses(/* JS::Handle aGlobalObj */) = 0; //SWT-20130918
/**
* Tell the context we're about to be reinitialize it.
*/
virtual void WillInitializeContext() = 0;
/**
* Tell the context we're done reinitializing it.
*/
virtual void DidInitializeContext() = 0;
virtual void EnterModalState() = 0;
virtual void LeaveModalState() = 0;
};
// NS_DEFINE_STATIC_IID_ACCESSOR(nsIScriptContext, NS_ISCRIPTCONTEXT_IID) //SWT-20130918
#endif // nsIScriptContext_h__
