mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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1ab8344d82
--HG-- rename : layout/style/CSSStyleSheet.cpp => layout/style/nsCSSStyleSheet.cpp rename : layout/style/CSSStyleSheet.h => layout/style/nsCSSStyleSheet.h
314 lines
9.1 KiB
C++
314 lines
9.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* implementation of interface for managing user and user-agent style sheets */
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#include "nsStyleSheetService.h"
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#include "nsIStyleSheet.h"
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#include "mozilla/CSSStyleSheet.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/unused.h"
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#include "mozilla/css/Loader.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/ipc/URIUtils.h"
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#include "nsIURI.h"
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#include "nsCOMPtr.h"
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#include "nsICategoryManager.h"
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#include "nsISupportsPrimitives.h"
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#include "nsNetUtil.h"
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#include "nsIObserverService.h"
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#include "nsLayoutStatics.h"
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using namespace mozilla;
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nsStyleSheetService *nsStyleSheetService::gInstance = nullptr;
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nsStyleSheetService::nsStyleSheetService()
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{
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PR_STATIC_ASSERT(0 == AGENT_SHEET && 1 == USER_SHEET && 2 == AUTHOR_SHEET);
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NS_ASSERTION(!gInstance, "Someone is using CreateInstance instead of GetService");
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gInstance = this;
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nsLayoutStatics::AddRef();
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}
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nsStyleSheetService::~nsStyleSheetService()
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{
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UnregisterWeakMemoryReporter(this);
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gInstance = nullptr;
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nsLayoutStatics::Release();
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}
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NS_IMPL_ISUPPORTS(
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nsStyleSheetService, nsIStyleSheetService, nsIMemoryReporter)
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void
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nsStyleSheetService::RegisterFromEnumerator(nsICategoryManager *aManager,
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const char *aCategory,
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nsISimpleEnumerator *aEnumerator,
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uint32_t aSheetType)
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{
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if (!aEnumerator)
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return;
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bool hasMore;
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while (NS_SUCCEEDED(aEnumerator->HasMoreElements(&hasMore)) && hasMore) {
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nsCOMPtr<nsISupports> element;
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if (NS_FAILED(aEnumerator->GetNext(getter_AddRefs(element))))
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break;
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nsCOMPtr<nsISupportsCString> icStr = do_QueryInterface(element);
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NS_ASSERTION(icStr,
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"category manager entries must be nsISupportsCStrings");
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nsAutoCString name;
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icStr->GetData(name);
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nsXPIDLCString spec;
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aManager->GetCategoryEntry(aCategory, name.get(), getter_Copies(spec));
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nsCOMPtr<nsIURI> uri;
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NS_NewURI(getter_AddRefs(uri), spec);
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if (uri)
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LoadAndRegisterSheetInternal(uri, aSheetType);
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}
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}
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int32_t
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nsStyleSheetService::FindSheetByURI(const nsCOMArray<nsIStyleSheet> &sheets,
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nsIURI *sheetURI)
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{
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for (int32_t i = sheets.Count() - 1; i >= 0; i-- ) {
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bool bEqual;
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nsIURI* uri = sheets[i]->GetSheetURI();
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if (uri
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&& NS_SUCCEEDED(uri->Equals(sheetURI, &bEqual))
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&& bEqual) {
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return i;
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}
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}
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return -1;
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}
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nsresult
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nsStyleSheetService::Init()
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{
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// If you make changes here, consider whether
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// SVGDocument::EnsureNonSVGUserAgentStyleSheetsLoaded should be updated too.
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// Child processes get their style sheets from the ContentParent.
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if (XRE_GetProcessType() == GeckoProcessType_Content) {
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return NS_OK;
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}
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// Enumerate all of the style sheet URIs registered in the category
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// manager and load them.
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nsCOMPtr<nsICategoryManager> catMan =
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do_GetService(NS_CATEGORYMANAGER_CONTRACTID);
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NS_ENSURE_TRUE(catMan, NS_ERROR_OUT_OF_MEMORY);
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nsCOMPtr<nsISimpleEnumerator> sheets;
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catMan->EnumerateCategory("agent-style-sheets", getter_AddRefs(sheets));
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RegisterFromEnumerator(catMan, "agent-style-sheets", sheets, AGENT_SHEET);
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catMan->EnumerateCategory("user-style-sheets", getter_AddRefs(sheets));
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RegisterFromEnumerator(catMan, "user-style-sheets", sheets, USER_SHEET);
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catMan->EnumerateCategory("author-style-sheets", getter_AddRefs(sheets));
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RegisterFromEnumerator(catMan, "author-style-sheets", sheets, AUTHOR_SHEET);
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RegisterWeakMemoryReporter(this);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsStyleSheetService::LoadAndRegisterSheet(nsIURI *aSheetURI,
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uint32_t aSheetType)
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{
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nsresult rv = LoadAndRegisterSheetInternal(aSheetURI, aSheetType);
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if (NS_SUCCEEDED(rv)) {
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const char* message;
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switch (aSheetType) {
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case AGENT_SHEET:
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message = "agent-sheet-added";
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break;
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case USER_SHEET:
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message = "user-sheet-added";
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break;
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case AUTHOR_SHEET:
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message = "author-sheet-added";
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break;
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default:
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return NS_ERROR_INVALID_ARG;
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}
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nsCOMPtr<nsIObserverService> serv = services::GetObserverService();
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if (serv) {
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// We're guaranteed that the new sheet is the last sheet in
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// mSheets[aSheetType]
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const nsCOMArray<nsIStyleSheet> & sheets = mSheets[aSheetType];
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serv->NotifyObservers(sheets[sheets.Count() - 1], message, nullptr);
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}
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if (XRE_GetProcessType() == GeckoProcessType_Default) {
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nsTArray<dom::ContentParent*> children;
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dom::ContentParent::GetAll(children);
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if (children.IsEmpty()) {
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return rv;
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}
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mozilla::ipc::URIParams uri;
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SerializeURI(aSheetURI, uri);
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for (uint32_t i = 0; i < children.Length(); i++) {
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unused << children[i]->SendLoadAndRegisterSheet(uri, aSheetType);
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}
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}
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}
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return rv;
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}
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nsresult
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nsStyleSheetService::LoadAndRegisterSheetInternal(nsIURI *aSheetURI,
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uint32_t aSheetType)
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{
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NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
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aSheetType == USER_SHEET ||
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aSheetType == AUTHOR_SHEET);
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NS_ENSURE_ARG_POINTER(aSheetURI);
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nsRefPtr<css::Loader> loader = new css::Loader();
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nsRefPtr<CSSStyleSheet> sheet;
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// Allow UA sheets, but not user sheets, to use unsafe rules
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nsresult rv = loader->LoadSheetSync(aSheetURI, aSheetType == AGENT_SHEET,
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true, getter_AddRefs(sheet));
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NS_ENSURE_SUCCESS(rv, rv);
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if (!mSheets[aSheetType].AppendObject(sheet)) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsStyleSheetService::SheetRegistered(nsIURI *sheetURI,
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uint32_t aSheetType, bool *_retval)
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{
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NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
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aSheetType == USER_SHEET ||
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aSheetType == AUTHOR_SHEET);
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NS_ENSURE_ARG_POINTER(sheetURI);
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NS_PRECONDITION(_retval, "Null out param");
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*_retval = (FindSheetByURI(mSheets[aSheetType], sheetURI) >= 0);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsStyleSheetService::UnregisterSheet(nsIURI *aSheetURI, uint32_t aSheetType)
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{
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NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
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aSheetType == USER_SHEET ||
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aSheetType == AUTHOR_SHEET);
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NS_ENSURE_ARG_POINTER(aSheetURI);
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int32_t foundIndex = FindSheetByURI(mSheets[aSheetType], aSheetURI);
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NS_ENSURE_TRUE(foundIndex >= 0, NS_ERROR_INVALID_ARG);
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nsCOMPtr<nsIStyleSheet> sheet = mSheets[aSheetType][foundIndex];
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mSheets[aSheetType].RemoveObjectAt(foundIndex);
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const char* message;
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switch (aSheetType) {
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case AGENT_SHEET:
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message = "agent-sheet-removed";
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break;
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case USER_SHEET:
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message = "user-sheet-removed";
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break;
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case AUTHOR_SHEET:
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message = "author-sheet-removed";
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break;
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}
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nsCOMPtr<nsIObserverService> serv = services::GetObserverService();
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if (serv)
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serv->NotifyObservers(sheet, message, nullptr);
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if (XRE_GetProcessType() == GeckoProcessType_Default) {
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nsTArray<dom::ContentParent*> children;
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dom::ContentParent::GetAll(children);
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if (children.IsEmpty()) {
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return NS_OK;
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}
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mozilla::ipc::URIParams uri;
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SerializeURI(aSheetURI, uri);
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for (uint32_t i = 0; i < children.Length(); i++) {
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unused << children[i]->SendUnregisterSheet(uri, aSheetType);
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}
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}
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return NS_OK;
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}
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//static
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nsStyleSheetService *
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nsStyleSheetService::GetInstance()
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{
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static bool first = true;
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if (first) {
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// make sure at first call that it's inited
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nsCOMPtr<nsIStyleSheetService> dummy =
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do_GetService(NS_STYLESHEETSERVICE_CONTRACTID);
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first = false;
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}
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return gInstance;
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}
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static size_t
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SizeOfElementIncludingThis(nsIStyleSheet* aElement,
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MallocSizeOf aMallocSizeOf, void *aData)
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{
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return aElement->SizeOfIncludingThis(aMallocSizeOf);
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}
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MOZ_DEFINE_MALLOC_SIZE_OF(StyleSheetServiceMallocSizeOf)
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NS_IMETHODIMP
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nsStyleSheetService::CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData, bool aAnonymize)
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{
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return MOZ_COLLECT_REPORT(
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"explicit/layout/style-sheet-service", KIND_HEAP, UNITS_BYTES,
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SizeOfIncludingThis(StyleSheetServiceMallocSizeOf),
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"Memory used for style sheets held by the style sheet service.");
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}
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size_t
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nsStyleSheetService::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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size_t n = aMallocSizeOf(this);
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n += mSheets[AGENT_SHEET].SizeOfExcludingThis(SizeOfElementIncludingThis,
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aMallocSizeOf);
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n += mSheets[USER_SHEET].SizeOfExcludingThis(SizeOfElementIncludingThis,
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aMallocSizeOf);
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n += mSheets[AUTHOR_SHEET].SizeOfExcludingThis(SizeOfElementIncludingThis,
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aMallocSizeOf);
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return n;
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}
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