Add m-esr52 at 52.6.0

1 files changed, 179 insertions, 0 deletions

diff --git a/dom/svg/SVGDocument.cpp b/dom/svg/SVGDocument.cpp
new file mode 100644
index 000000000..f992e52f5
--- /dev/null
+++ b/dom/svg/SVGDocument.cpp
@@ -0,0 +1,179 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "mozilla/dom/SVGDocument.h"
+
+#include "mozilla/css/Loader.h"
+#include "nsICategoryManager.h"
+#include "nsISimpleEnumerator.h"
+#include "nsIStyleSheetService.h"
+#include "nsISupportsPrimitives.h"
+#include "nsLayoutStylesheetCache.h"
+#include "nsNetUtil.h"
+#include "nsServiceManagerUtils.h"
+#include "nsString.h"
+#include "nsLiteralString.h"
+#include "nsIDOMSVGElement.h"
+#include "mozilla/dom/Element.h"
+#include "nsSVGElement.h"
+#include "mozilla/StyleSheet.h"
+#include "mozilla/StyleSheetInlines.h"
+
+using namespace mozilla::css;
+using namespace mozilla::dom;
+
+namespace mozilla {
+namespace dom {
+
+//----------------------------------------------------------------------
+// Implementation
+
+//----------------------------------------------------------------------
+// nsISupports methods:
+
+nsresult
+SVGDocument::InsertChildAt(nsIContent* aKid, uint32_t aIndex, bool aNotify)
+{
+  if (aKid->IsElement() && !aKid->IsSVGElement()) {
+    // We can get here when well formed XML with a non-SVG root element is
+    // served with the SVG MIME type, for example. In that case we need to load
+    // the non-SVG UA sheets or else we can get bugs like bug 1016145.  Note
+    // that we have to do this _before_ the XMLDocument::InsertChildAt call,
+    // since that can try to construct frames, and we need to have the sheets
+    // loaded by then.
+    EnsureNonSVGUserAgentStyleSheetsLoaded();
+  }
+
+  return XMLDocument::InsertChildAt(aKid, aIndex, aNotify);
+}
+
+nsresult
+SVGDocument::Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const
+{
+  NS_ASSERTION(aNodeInfo->NodeInfoManager() == mNodeInfoManager,
+               "Can't import this document into another document!");
+
+  RefPtr<SVGDocument> clone = new SVGDocument();
+  nsresult rv = CloneDocHelper(clone.get());
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return CallQueryInterface(clone.get(), aResult);
+}
+
+void
+SVGDocument::EnsureNonSVGUserAgentStyleSheetsLoaded()
+{
+  if (mHasLoadedNonSVGUserAgentStyleSheets) {
+    return;
+  }
+
+  if (IsStaticDocument()) {
+    // If we're a static clone of a document, then
+    // nsIDocument::CreateStaticClone will handle cloning the original
+    // document's sheets, including the on-demand non-SVG UA sheets,
+    // for us.
+    return;
+  }
+
+  mHasLoadedNonSVGUserAgentStyleSheets = true;
+
+  BeginUpdate(UPDATE_STYLE);
+
+  if (IsBeingUsedAsImage()) {
+    // nsDocumentViewer::CreateStyleSet skipped loading all user-agent/user
+    // style sheets in this case, but we'll need B2G/Fennec's
+    // content.css. We could load all the sheets registered with the
+    // nsIStyleSheetService (and maybe we should) but most likely it isn't
+    // desirable or necessary for foreignObject in SVG-as-an-image. Instead we
+    // only load the "agent-style-sheets" that nsStyleSheetService::Init()
+    // pulls in from the category manager. That keeps memory use of
+    // SVG-as-an-image down.
+    //
+    // We do this before adding UASheet() etc. below because
+    // EnsureOnDemandBuiltInUASheet prepends, and B2G/Fennec's
+    // content.css must come after UASheet() etc.
+    nsCOMPtr<nsICategoryManager> catMan =
+    do_GetService(NS_CATEGORYMANAGER_CONTRACTID);
+    if (catMan) {
+      nsCOMPtr<nsISimpleEnumerator> sheets;
+      catMan->EnumerateCategory("agent-style-sheets", getter_AddRefs(sheets));
+      if (sheets) {
+        bool hasMore;
+        while (NS_SUCCEEDED(sheets->HasMoreElements(&hasMore)) && hasMore) {
+          nsCOMPtr<nsISupports> sheet;
+          if (NS_FAILED(sheets->GetNext(getter_AddRefs(sheet))))
+            break;
+
+          nsCOMPtr<nsISupportsCString> icStr = do_QueryInterface(sheet);
+          MOZ_ASSERT(icStr,
+                     "category manager entries must be nsISupportsCStrings");
+
+          nsAutoCString name;
+          icStr->GetData(name);
+
+          nsXPIDLCString spec;
+          catMan->GetCategoryEntry("agent-style-sheets", name.get(),
+                                   getter_Copies(spec));
+
+          mozilla::css::Loader* cssLoader = CSSLoader();
+          if (cssLoader->GetEnabled()) {
+            nsCOMPtr<nsIURI> uri;
+            NS_NewURI(getter_AddRefs(uri), spec);
+            if (uri) {
+              RefPtr<StyleSheet> sheet;
+              cssLoader->LoadSheetSync(uri,
+                                       mozilla::css::eAgentSheetFeatures,
+                                       true, &sheet);
+              if (sheet) {
+                EnsureOnDemandBuiltInUASheet(sheet);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  auto cache = nsLayoutStylesheetCache::For(GetStyleBackendType());
+
+  StyleSheet* sheet = cache->NumberControlSheet();
+  if (sheet) {
+    // number-control.css can be behind a pref
+    EnsureOnDemandBuiltInUASheet(sheet);
+  }
+  EnsureOnDemandBuiltInUASheet(cache->FormsSheet());
+  EnsureOnDemandBuiltInUASheet(cache->CounterStylesSheet());
+  EnsureOnDemandBuiltInUASheet(cache->HTMLSheet());
+  if (nsLayoutUtils::ShouldUseNoFramesSheet(this)) {
+    EnsureOnDemandBuiltInUASheet(cache->NoFramesSheet());
+  }
+  if (nsLayoutUtils::ShouldUseNoScriptSheet(this)) {
+    EnsureOnDemandBuiltInUASheet(cache->NoScriptSheet());
+  }
+  EnsureOnDemandBuiltInUASheet(cache->UASheet());
+
+  EndUpdate(UPDATE_STYLE);
+}
+
+} // namespace dom
+} // namespace mozilla
+
+////////////////////////////////////////////////////////////////////////
+// Exported creation functions
+
+nsresult
+NS_NewSVGDocument(nsIDocument** aInstancePtrResult)
+{
+  RefPtr<SVGDocument> doc = new SVGDocument();
+
+  nsresult rv = doc->Init();
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  doc.forget(aInstancePtrResult);
+  return rv;
+}