Add m-esr52 at 52.6.0

1 files changed, 204 insertions, 0 deletions

diff --git a/dom/xbl/nsXBLPrototypeResources.cpp b/dom/xbl/nsXBLPrototypeResources.cpp
new file mode 100644
index 0000000000..a1ec426635
--- /dev/null
+++ b/dom/xbl/nsXBLPrototypeResources.cpp
@@ -0,0 +1,204 @@
+/* -*- 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 "nsIStyleRuleProcessor.h"
+#include "nsIDocument.h"
+#include "nsIContent.h"
+#include "nsIServiceManager.h"
+#include "nsXBLResourceLoader.h"
+#include "nsXBLPrototypeResources.h"
+#include "nsXBLPrototypeBinding.h"
+#include "nsIDocumentObserver.h"
+#include "mozilla/css/Loader.h"
+#include "nsIURI.h"
+#include "nsLayoutCID.h"
+#include "nsCSSRuleProcessor.h"
+#include "nsStyleSet.h"
+#include "mozilla/dom/URL.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/StyleSheet.h"
+#include "mozilla/StyleSheetInlines.h"
+
+using namespace mozilla;
+using mozilla::dom::IsChromeURI;
+
+nsXBLPrototypeResources::nsXBLPrototypeResources(nsXBLPrototypeBinding* aBinding)
+{
+  MOZ_COUNT_CTOR(nsXBLPrototypeResources);
+
+  mLoader = new nsXBLResourceLoader(aBinding, this);
+}
+
+nsXBLPrototypeResources::~nsXBLPrototypeResources()
+{
+  MOZ_COUNT_DTOR(nsXBLPrototypeResources);
+  if (mLoader) {
+    mLoader->mResources = nullptr;
+  }
+}
+
+void
+nsXBLPrototypeResources::AddResource(nsIAtom* aResourceType, const nsAString& aSrc)
+{
+  if (mLoader)
+    mLoader->AddResource(aResourceType, aSrc);
+}
+
+void
+nsXBLPrototypeResources::LoadResources(bool* aResult)
+{
+  if (mLoader)
+    mLoader->LoadResources(aResult);
+  else
+    *aResult = true; // All resources loaded.
+}
+
+void
+nsXBLPrototypeResources::AddResourceListener(nsIContent* aBoundElement)
+{
+  if (mLoader)
+    mLoader->AddResourceListener(aBoundElement);
+}
+
+nsresult
+nsXBLPrototypeResources::FlushSkinSheets()
+{
+  if (mStyleSheetList.Length() == 0)
+    return NS_OK;
+
+  nsCOMPtr<nsIDocument> doc =
+    mLoader->mBinding->XBLDocumentInfo()->GetDocument();
+
+  // If doc is null, we're in the process of tearing things down, so just
+  // return without rebuilding anything.
+  if (!doc) {
+    return NS_OK;
+  }
+
+  // We have scoped stylesheets.  Reload any chrome stylesheets we
+  // encounter.  (If they aren't skin sheets, it doesn't matter, since
+  // they'll still be in the chrome cache.  Skip inline sheets, which
+  // skin sheets can't be, and which in any case don't have a usable
+  // URL to reload.)
+
+  nsTArray<RefPtr<StyleSheet>> oldSheets;
+
+  oldSheets.SwapElements(mStyleSheetList);
+
+  mozilla::css::Loader* cssLoader = doc->CSSLoader();
+
+  for (size_t i = 0, count = oldSheets.Length(); i < count; ++i) {
+    StyleSheet* oldSheet = oldSheets[i];
+
+    nsIURI* uri = oldSheet->GetSheetURI();
+
+    RefPtr<StyleSheet> newSheet;
+    if (!oldSheet->IsInline() && IsChromeURI(uri)) {
+      if (NS_FAILED(cssLoader->LoadSheetSync(uri, &newSheet)))
+        continue;
+    }
+    else {
+      newSheet = oldSheet;
+    }
+
+    mStyleSheetList.AppendElement(newSheet);
+  }
+
+  GatherRuleProcessor();
+
+  return NS_OK;
+}
+
+nsresult
+nsXBLPrototypeResources::Write(nsIObjectOutputStream* aStream)
+{
+  if (mLoader)
+    return mLoader->Write(aStream);
+  return NS_OK;
+}
+
+void
+nsXBLPrototypeResources::Traverse(nsCycleCollectionTraversalCallback &cb)
+{
+  NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "proto mResources mLoader");
+  cb.NoteXPCOMChild(mLoader);
+
+  CycleCollectionNoteChild(cb, mRuleProcessor.get(), "mRuleProcessor");
+  ImplCycleCollectionTraverse(cb, mStyleSheetList, "mStyleSheetList");
+}
+
+void
+nsXBLPrototypeResources::Unlink()
+{
+  mStyleSheetList.Clear();
+  mRuleProcessor = nullptr;
+}
+
+void
+nsXBLPrototypeResources::ClearLoader()
+{
+  mLoader = nullptr;
+}
+
+void
+nsXBLPrototypeResources::GatherRuleProcessor()
+{
+  nsTArray<RefPtr<CSSStyleSheet>> sheets(mStyleSheetList.Length());
+  for (StyleSheet* sheet : mStyleSheetList) {
+    MOZ_ASSERT(sheet->IsGecko(),
+               "GatherRuleProcessor must only be called for "
+               "nsXBLPrototypeResources objects with Gecko-flavored style "
+               "backends");
+    sheets.AppendElement(sheet->AsGecko());
+  }
+  mRuleProcessor = new nsCSSRuleProcessor(Move(sheets),
+                                          SheetType::Doc,
+                                          nullptr,
+                                          mRuleProcessor);
+}
+
+void
+nsXBLPrototypeResources::AppendStyleSheet(StyleSheet* aSheet)
+{
+  mStyleSheetList.AppendElement(aSheet);
+}
+
+void
+nsXBLPrototypeResources::RemoveStyleSheet(StyleSheet* aSheet)
+{
+  mStyleSheetList.RemoveElement(aSheet);
+}
+
+void
+nsXBLPrototypeResources::InsertStyleSheetAt(size_t aIndex, StyleSheet* aSheet)
+{
+  mStyleSheetList.InsertElementAt(aIndex, aSheet);
+}
+
+StyleSheet*
+nsXBLPrototypeResources::StyleSheetAt(size_t aIndex) const
+{
+  return mStyleSheetList[aIndex];
+}
+
+size_t
+nsXBLPrototypeResources::SheetCount() const
+{
+  return mStyleSheetList.Length();
+}
+
+bool
+nsXBLPrototypeResources::HasStyleSheets() const
+{
+  return !mStyleSheetList.IsEmpty();
+}
+
+void
+nsXBLPrototypeResources::AppendStyleSheetsTo(
+                                      nsTArray<StyleSheet*>& aResult) const
+{
+  aResult.AppendElements(mStyleSheetList);
+}