mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
277 lines
7.3 KiB
C++
277 lines
7.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Gecko Layout
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*
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* The Initial Developer of the Original Code is
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* Benjamin Smedberg <bsmedberg@covad.net>
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsLayoutStylesheetCache.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "mozilla/css/Loader.h"
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#include "nsIFile.h"
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#include "nsLayoutCID.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_ISUPPORTS1(nsLayoutStylesheetCache, nsIObserver)
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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 = nsnull;
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mUserChromeSheet = nsnull;
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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 = nsnull;
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mFormsSheet = nsnull;
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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 nsnull;
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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 nsnull;
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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 nsnull;
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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 nsnull;
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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 nsnull;
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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 nsnull;
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return gStyleCache->mQuirkSheet;
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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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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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}
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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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}
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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 = nsnull;
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mozilla::css::Loader*
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nsLayoutStylesheetCache::gCSSLoader = nsnull;
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