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/* -*- Mode: C++; tab-width: 8; 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/. */
#ifndef nsIScriptGlobalObject_h__
#define nsIScriptGlobalObject_h__
#include "nsISupports.h"
#include "nsIGlobalObject.h"
#include "js/TypeDecls.h"
#include "mozilla/EventForwards.h"
class nsIScriptContext;
class nsIScriptGlobalObject;
namespace mozilla {
namespace dom {
struct ErrorEventInit;
} // namespace dom
} // namespace mozilla
// A helper function for nsIScriptGlobalObject implementations to use
// when handling a script error. Generally called by the global when a context
// notifies it of an error via nsIScriptGlobalObject::HandleScriptError.
// Returns true if HandleDOMEvent was actually called, in which case
// aStatus will be filled in with the status.
bool
NS_HandleScriptError(nsIScriptGlobalObject *aScriptGlobal,
const mozilla::dom::ErrorEventInit &aErrorEvent,
nsEventStatus *aStatus);
#define NS_ISCRIPTGLOBALOBJECT_IID \
{ 0x876f83bd, 0x6314, 0x460a, \
{ 0xa0, 0x45, 0x1c, 0x8f, 0x46, 0x2f, 0xb8, 0xe1 } }
/**
* The global object which keeps a script context for each supported script
* language. This often used to store per-window global state.
* This is a heavyweight interface implemented only by DOM globals, and
* it might go away some time in the future.
*/
class nsIScriptGlobalObject : public nsIGlobalObject
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCRIPTGLOBALOBJECT_IID)
/**
* Ensure that the script global object is initialized for working with the
* specified script language ID. This will set up the nsIScriptContext
* and 'script global' for that language, allowing these to be fetched
* and manipulated.
* @return NS_OK if successful; error conditions include that the language
* has not been registered, as well as 'normal' errors, such as
* out-of-memory
*/
virtual nsresult EnsureScriptEnvironment() = 0;
/**
* Get a script context (WITHOUT added reference) for the specified language.
*/
virtual nsIScriptContext *GetScriptContext() = 0;
nsIScriptContext* GetContext() {
return GetScriptContext();
}
/**
* Handle a script error. Generally called by a script context.
*/
virtual nsresult HandleScriptError(
const mozilla::dom::ErrorEventInit &aErrorEventInit,
nsEventStatus *aEventStatus) {
NS_ENSURE_STATE(NS_HandleScriptError(this, aErrorEventInit, aEventStatus));
return NS_OK;
}
virtual bool IsBlackForCC(bool aTracingNeeded = true) { return false; }
protected:
virtual ~nsIScriptGlobalObject() {}
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIScriptGlobalObject,
NS_ISCRIPTGLOBALOBJECT_IID)
#endif
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