mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
312 lines
7.6 KiB
C++
312 lines
7.6 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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#include "nsLayoutStylesheetCache.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/css/Loader.h"
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#include "nsIFile.h"
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#include "nsNetUtil.h"
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#include "nsIObserverService.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIXULRuntime.h"
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#include "nsCSSStyleSheet.h"
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NS_IMPL_ISUPPORTS2(
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nsLayoutStylesheetCache, nsIObserver, nsIMemoryReporter)
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nsresult
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nsLayoutStylesheetCache::Observe(nsISupports* aSubject,
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const char* aTopic,
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const PRUnichar* aData)
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{
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if (!strcmp(aTopic, "profile-before-change")) {
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mUserContentSheet = nullptr;
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mUserChromeSheet = nullptr;
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}
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else if (!strcmp(aTopic, "profile-do-change")) {
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InitFromProfile();
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}
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else if (strcmp(aTopic, "chrome-flush-skin-caches") == 0 ||
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strcmp(aTopic, "chrome-flush-caches") == 0) {
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mScrollbarsSheet = nullptr;
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mFormsSheet = nullptr;
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}
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else {
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NS_NOTREACHED("Unexpected observer topic.");
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}
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return NS_OK;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::ScrollbarsSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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if (!gStyleCache->mScrollbarsSheet) {
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nsCOMPtr<nsIURI> sheetURI;
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NS_NewURI(getter_AddRefs(sheetURI),
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NS_LITERAL_CSTRING("chrome://global/skin/scrollbars.css"));
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// Scrollbars don't need access to unsafe rules
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if (sheetURI)
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LoadSheet(sheetURI, gStyleCache->mScrollbarsSheet, false);
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NS_ASSERTION(gStyleCache->mScrollbarsSheet, "Could not load scrollbars.css.");
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}
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return gStyleCache->mScrollbarsSheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::FormsSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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if (!gStyleCache->mFormsSheet) {
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nsCOMPtr<nsIURI> sheetURI;
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NS_NewURI(getter_AddRefs(sheetURI),
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NS_LITERAL_CSTRING("resource://gre-resources/forms.css"));
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// forms.css needs access to unsafe rules
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if (sheetURI)
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LoadSheet(sheetURI, gStyleCache->mFormsSheet, true);
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NS_ASSERTION(gStyleCache->mFormsSheet, "Could not load forms.css.");
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}
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return gStyleCache->mFormsSheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::UserContentSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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return gStyleCache->mUserContentSheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::UserChromeSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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return gStyleCache->mUserChromeSheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::UASheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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return gStyleCache->mUASheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::QuirkSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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return gStyleCache->mQuirkSheet;
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}
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nsCSSStyleSheet*
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nsLayoutStylesheetCache::FullScreenOverrideSheet()
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{
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EnsureGlobal();
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if (!gStyleCache)
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return nullptr;
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return gStyleCache->mFullScreenOverrideSheet;
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}
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void
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nsLayoutStylesheetCache::Shutdown()
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{
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NS_IF_RELEASE(gCSSLoader);
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NS_IF_RELEASE(gStyleCache);
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}
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MOZ_DEFINE_MALLOC_SIZE_OF(LayoutStylesheetCacheMallocSizeOf)
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NS_IMETHODIMP
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nsLayoutStylesheetCache::CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData)
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{
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return MOZ_COLLECT_REPORT(
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"explicit/layout/style-sheet-cache", KIND_HEAP, UNITS_BYTES,
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SizeOfIncludingThis(LayoutStylesheetCacheMallocSizeOf),
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"Memory used for some built-in style sheets.");
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}
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size_t
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nsLayoutStylesheetCache::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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size_t n = aMallocSizeOf(this);
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#define MEASURE(s) n += s ? s->SizeOfIncludingThis(aMallocSizeOf) : 0;
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MEASURE(mScrollbarsSheet);
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MEASURE(mFormsSheet);
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MEASURE(mUserContentSheet);
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MEASURE(mUserChromeSheet);
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MEASURE(mUASheet);
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MEASURE(mQuirkSheet);
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MEASURE(mFullScreenOverrideSheet);
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - gCSSLoader
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return n;
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}
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nsLayoutStylesheetCache::nsLayoutStylesheetCache()
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{
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nsCOMPtr<nsIObserverService> obsSvc =
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mozilla::services::GetObserverService();
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NS_ASSERTION(obsSvc, "No global observer service?");
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if (obsSvc) {
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obsSvc->AddObserver(this, "profile-before-change", false);
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obsSvc->AddObserver(this, "profile-do-change", false);
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obsSvc->AddObserver(this, "chrome-flush-skin-caches", false);
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obsSvc->AddObserver(this, "chrome-flush-caches", false);
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}
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InitFromProfile();
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// And make sure that we load our UA sheets. No need to do this
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// per-profile, since they're profile-invariant.
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nsCOMPtr<nsIURI> uri;
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NS_NewURI(getter_AddRefs(uri), "resource://gre-resources/ua.css");
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if (uri) {
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LoadSheet(uri, mUASheet, true);
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}
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NS_ASSERTION(mUASheet, "Could not load ua.css");
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NS_NewURI(getter_AddRefs(uri), "resource://gre-resources/quirk.css");
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if (uri) {
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LoadSheet(uri, mQuirkSheet, true);
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}
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NS_ASSERTION(mQuirkSheet, "Could not load quirk.css");
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NS_NewURI(getter_AddRefs(uri), "resource://gre-resources/full-screen-override.css");
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if (uri) {
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LoadSheet(uri, mFullScreenOverrideSheet, true);
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}
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NS_ASSERTION(mFullScreenOverrideSheet, "Could not load full-screen-override.css");
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}
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nsLayoutStylesheetCache::~nsLayoutStylesheetCache()
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{
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mozilla::UnregisterWeakMemoryReporter(this);
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gStyleCache = nullptr;
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}
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void
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nsLayoutStylesheetCache::InitMemoryReporter()
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{
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mozilla::RegisterWeakMemoryReporter(this);
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}
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void
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nsLayoutStylesheetCache::EnsureGlobal()
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{
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if (gStyleCache) return;
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gStyleCache = new nsLayoutStylesheetCache();
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if (!gStyleCache) return;
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NS_ADDREF(gStyleCache);
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gStyleCache->InitMemoryReporter();
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}
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void
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nsLayoutStylesheetCache::InitFromProfile()
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{
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nsCOMPtr<nsIXULRuntime> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
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if (appInfo) {
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bool inSafeMode = false;
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appInfo->GetInSafeMode(&inSafeMode);
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if (inSafeMode)
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return;
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}
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nsCOMPtr<nsIFile> contentFile;
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nsCOMPtr<nsIFile> chromeFile;
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NS_GetSpecialDirectory(NS_APP_USER_CHROME_DIR,
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getter_AddRefs(contentFile));
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if (!contentFile) {
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// if we don't have a profile yet, that's OK!
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return;
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}
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contentFile->Clone(getter_AddRefs(chromeFile));
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if (!chromeFile) return;
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contentFile->Append(NS_LITERAL_STRING("userContent.css"));
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chromeFile->Append(NS_LITERAL_STRING("userChrome.css"));
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LoadSheetFile(contentFile, mUserContentSheet);
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LoadSheetFile(chromeFile, mUserChromeSheet);
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}
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void
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nsLayoutStylesheetCache::LoadSheetFile(nsIFile* aFile, nsRefPtr<nsCSSStyleSheet> &aSheet)
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{
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bool exists = false;
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aFile->Exists(&exists);
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if (!exists) return;
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nsCOMPtr<nsIURI> uri;
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NS_NewFileURI(getter_AddRefs(uri), aFile);
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LoadSheet(uri, aSheet, false);
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}
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void
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nsLayoutStylesheetCache::LoadSheet(nsIURI* aURI,
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nsRefPtr<nsCSSStyleSheet> &aSheet,
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bool aEnableUnsafeRules)
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{
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if (!aURI) {
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NS_ERROR("Null URI. Out of memory?");
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return;
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}
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if (!gCSSLoader) {
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gCSSLoader = new mozilla::css::Loader();
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NS_IF_ADDREF(gCSSLoader);
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}
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if (gCSSLoader) {
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gCSSLoader->LoadSheetSync(aURI, aEnableUnsafeRules, true,
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getter_AddRefs(aSheet));
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}
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}
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nsLayoutStylesheetCache*
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nsLayoutStylesheetCache::gStyleCache = nullptr;
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mozilla::css::Loader*
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nsLayoutStylesheetCache::gCSSLoader = nullptr;
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