The Tor Browser: comparison content/base/public/nsIScriptElement.h

--1:000000000000
+:866cbe8ab4a9
+/* -*- 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/. */
+#ifndef nsIScriptElement_h___
+#define nsIScriptElement_h___
+#include "nsISupports.h"
+#include "nsIURI.h"
+#include "nsCOMPtr.h"
+#include "nsIScriptLoaderObserver.h"
+#include "nsWeakPtr.h"
+#include "nsIParser.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsIDOMHTMLScriptElement.h"
+#include "mozilla/CORSMode.h"
+#define NS_ISCRIPTELEMENT_IID \
+{ 0x491628bc, 0xce7c, 0x4db4, \
+{ 0x93, 0x3f, 0xce, 0x1b, 0x75, 0xee, 0x75, 0xce } }
+/**
+* Internal interface implemented by script elements
+*/
+class nsIScriptElement : public nsIScriptLoaderObserver {
+public:
+NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCRIPTELEMENT_IID)
+nsIScriptElement(mozilla::dom::FromParser aFromParser)
+: mLineNumber(0),
+mAlreadyStarted(false),
+mMalformed(false),
+mDoneAddingChildren(aFromParser == mozilla::dom::NOT_FROM_PARSER ||
+aFromParser == mozilla::dom::FROM_PARSER_FRAGMENT),
+mForceAsync(aFromParser == mozilla::dom::NOT_FROM_PARSER ||
+aFromParser == mozilla::dom::FROM_PARSER_FRAGMENT),
+mFrozen(false),
+mDefer(false),
+mAsync(false),
+mExternal(false),
+mParserCreated(aFromParser == mozilla::dom::FROM_PARSER_FRAGMENT ?
+mozilla::dom::NOT_FROM_PARSER : aFromParser),
+// Fragment parser-created scripts (if executable)
+// behave like script-created scripts.
+mCreatorParser(nullptr)
+{
+}
+/**
+* Content type identifying the scripting language. Can be empty, in
+* which case javascript will be assumed.
+*/
+virtual void GetScriptType(nsAString& type) = 0;
+/**
+* Location of script source text. Can return null, in which case
+* this is assumed to be an inline script element.
+*/
+nsIURI* GetScriptURI()
+{
+NS_PRECONDITION(mFrozen, "Not ready for this call yet!");
+return mUri;
+}
+/**
+* Script source text for inline script elements.
+*/
+virtual void GetScriptText(nsAString& text) = 0;
+virtual void GetScriptCharset(nsAString& charset) = 0;
+/**
+* Freezes the return values of GetScriptDeferred(), GetScriptAsync() and
+* GetScriptURI() so that subsequent modifications to the attributes don't
+* change execution behavior.
+*/
+virtual void FreezeUriAsyncDefer() = 0;
+/**
+* Is the script deferred. Currently only supported by HTML scripts.
+*/
+bool GetScriptDeferred()
+{
+NS_PRECONDITION(mFrozen, "Not ready for this call yet!");
+return mDefer;
+}
+/**
+* Is the script async. Currently only supported by HTML scripts.
+*/
+bool GetScriptAsync()
+{
+NS_PRECONDITION(mFrozen, "Not ready for this call yet!");
+return mAsync;
+}
+/**
+* Is the script an external script?
+*/
+bool GetScriptExternal()
+{
+NS_PRECONDITION(mFrozen, "Not ready for this call yet!");
+return mExternal;
+}
+/**
+* Returns how the element was created.
+*/
+mozilla::dom::FromParser GetParserCreated()
+{
+return mParserCreated;
+}
+void SetScriptLineNumber(uint32_t aLineNumber)
+{
+mLineNumber = aLineNumber;
+}
+uint32_t GetScriptLineNumber()
+{
+return mLineNumber;
+}
+void SetIsMalformed()
+{
+mMalformed = true;
+}
+bool IsMalformed()
+{
+return mMalformed;
+}
+void PreventExecution()
+{
+mAlreadyStarted = true;
+}
+void LoseParserInsertedness()
+{
+mFrozen = false;
+mUri = nullptr;
+mCreatorParser = nullptr;
+mParserCreated = mozilla::dom::NOT_FROM_PARSER;
+bool async = false;
+nsCOMPtr<nsIDOMHTMLScriptElement> htmlScript = do_QueryInterface(this);
+if (htmlScript) {
+htmlScript->GetAsync(&async);
+}
+mForceAsync = !async;
+}
+void SetCreatorParser(nsIParser* aParser)
+{
+mCreatorParser = do_GetWeakReference(aParser);
+}
+/**
+* Unblocks the creator parser
+*/
+void UnblockParser()
+{
+nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+if (parser) {
+parser->UnblockParser();
+}
+}
+/**
+* Attempts to resume parsing asynchronously
+*/
+void ContinueParserAsync()
+{
+nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+if (parser) {
+parser->ContinueInterruptedParsingAsync();
+}
+}
+/**
+* Informs the creator parser that the evaluation of this script is starting
+*/
+void BeginEvaluating()
+{
+nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+if (parser) {
+parser->BeginEvaluatingParserInsertedScript();
+}
+}
+/**
+* Informs the creator parser that the evaluation of this script is ending
+*/
+void EndEvaluating()
+{
+nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+if (parser) {
+parser->EndEvaluatingParserInsertedScript();
+}
+}
+/**
+* Retrieves a pointer to the creator parser if this has one or null if not
+*/
+already_AddRefed<nsIParser> GetCreatorParser()
+{
+nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
+return parser.forget();
+}
+/**
+* This method is called when the parser finishes creating the script
+* element's children, if any are present.
+*
+* @return whether the parser will be blocked while this script is being
+*         loaded
+*/
+bool AttemptToExecute()
+{
+mDoneAddingChildren = true;
+bool block = MaybeProcessScript();
+if (!mAlreadyStarted) {
+// Need to lose parser-insertedness here to allow another script to cause
+// execution later.
+LoseParserInsertedness();
+}
+return block;
+}
+/**
+* Get the CORS mode of the script element
+*/
+virtual mozilla::CORSMode GetCORSMode() const
+{
+/* Default to no CORS */
+return mozilla::CORS_NONE;
+}
+/**
+* Fire an error event
+*/
+virtual nsresult FireErrorEvent() = 0;
+protected:
+/**
+* Processes the script if it's in the document-tree and links to or
+* contains a script. Once it has been evaluated there is no way to make it
+* reevaluate the script, you'll have to create a new element. This also means
+* that when adding a src attribute to an element that already contains an
+* inline script, the script referenced by the src attribute will not be
+* loaded.
+*
+* In order to be able to use multiple childNodes, or to use the
+* fallback mechanism of using both inline script and linked script you have
+* to add all attributes and childNodes before adding the element to the
+* document-tree.
+*
+* @return whether the parser will be blocked while this script is being
+*         loaded
+*/
+virtual bool MaybeProcessScript() = 0;
+/**
+* The start line number of the script.
+*/
+uint32_t mLineNumber;
+/**
+* The "already started" flag per HTML5.
+*/
+bool mAlreadyStarted;
+/**
+* The script didn't have an end tag.
+*/
+bool mMalformed;
+/**
+* False if parser-inserted but the parser hasn't triggered running yet.
+*/
+bool mDoneAddingChildren;
+/**
+* If true, the .async property returns true instead of reflecting the
+* content attribute.
+*/
+bool mForceAsync;
+/**
+* Whether src, defer and async are frozen.
+*/
+bool mFrozen;
+/**
+* The effective deferredness.
+*/
+bool mDefer;
+/**
+* The effective asyncness.
+*/
+bool mAsync;
+/**
+* The effective externalness. A script can be external with mUri being null
+* if the src attribute contained an invalid URL string.
+*/
+bool mExternal;
+/**
+* Whether this element was parser-created.
+*/
+mozilla::dom::FromParser mParserCreated;
+/**
+* The effective src (or null if no src).
+*/
+nsCOMPtr<nsIURI> mUri;
+/**
+* The creator parser of a non-defer, non-async parser-inserted script.
+*/
+nsWeakPtr mCreatorParser;
+};
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIScriptElement, NS_ISCRIPTELEMENT_IID)
+#endif // nsIScriptElement_h___

The Tor Browser / file comparison

comparison: content/base/public/nsIScriptElement.h

content/base/public/nsIScriptElement.h