Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 114 insertions, 0 deletions

diff --git a/dom/base/nsMimeTypeArray.h b/dom/base/nsMimeTypeArray.h
new file mode 100644
index 0000000000..aaeedba3ae
--- /dev/null
+++ b/dom/base/nsMimeTypeArray.h
@@ -0,0 +1,114 @@
+/* -*- 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/. */
+
+#ifndef nsMimeTypeArray_h___
+#define nsMimeTypeArray_h___
+
+#include "nsWrapperCache.h"
+#include "nsCOMPtr.h"
+#include "nsPIDOMWindow.h"
+#include "nsTArray.h"
+#include "mozilla/dom/BindingDeclarations.h"
+
+class nsMimeType;
+class nsPluginElement;
+
+/**
+ * Array class backing HTML's navigator.mimeTypes.  This always holds
+ * references to the hard-coded set of PDF MIME types defined by HTML but it
+ * only consults them if "pdfjs.disabled" is false.  There is never more
+ * than one of these per DOM window.
+ */
+class nsMimeTypeArray final : public nsISupports, public nsWrapperCache {
+ public:
+  nsMimeTypeArray(nsPIDOMWindowInner* aWindow,
+                  const mozilla::Array<RefPtr<nsMimeType>, 2>& aMimeTypes);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(nsMimeTypeArray)
+
+  nsPIDOMWindowInner* GetParentObject() const;
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  // MimeTypeArray WebIDL methods
+  uint32_t Length() { return ForceNoPlugins() ? 0 : ArrayLength(mMimeTypes); }
+
+  nsMimeType* Item(uint32_t aIndex) {
+    bool unused;
+    return IndexedGetter(aIndex, unused);
+  }
+
+  nsMimeType* NamedItem(const nsAString& aName) {
+    bool unused;
+    return NamedGetter(aName, unused);
+  }
+
+  nsMimeType* IndexedGetter(uint32_t index, bool& found);
+
+  nsMimeType* NamedGetter(const nsAString& name, bool& found);
+
+  void GetSupportedNames(nsTArray<nsString>& retval);
+
+ protected:
+  virtual ~nsMimeTypeArray();
+
+  bool ForceNoPlugins();
+
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
+  mozilla::Array<RefPtr<nsMimeType>, 2> mMimeTypes;
+};
+
+/**
+ * Mime type class backing entries in HTML's navigator.mimeTypes array.  There
+ * is a fixed set of these, as defined by HTML.
+ */
+class nsMimeType final : public nsWrapperCache {
+ public:
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(nsMimeType)
+  NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(nsMimeType)
+
+  nsMimeType(nsPluginElement* aPluginElement, const nsAString& aName);
+
+  nsPluginElement* GetParentObject() const { return mPluginElement; }
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  // MimeType WebIDL methods
+  void GetDescription(mozilla::dom::DOMString& retval) const {
+    retval.SetKnownLiveString(kMimeDescription);
+  }
+
+  already_AddRefed<nsPluginElement> EnabledPlugin() const {
+    return do_AddRef(mPluginElement);
+  }
+
+  void GetSuffixes(mozilla::dom::DOMString& retval) const {
+    retval.SetKnownLiveString(kMimeSuffix);
+  }
+
+  void GetType(nsString& retval) const { retval = mName; }
+  const nsString& Name() const { return mName; }
+
+ protected:
+  virtual ~nsMimeType();
+
+  static constexpr nsLiteralString kMimeDescription =
+      u"Portable Document Format"_ns;
+  static constexpr nsLiteralString kMimeSuffix = u"pdf"_ns;
+
+  // Note that this creates an explicit reference cycle:
+  //
+  // nsMimeType -> nsPluginElement -> nsPluginArray ->
+  //    nsMimeTypeArray -> nsMimeType
+  //
+  // We rely on the cycle collector to break this cycle.
+  RefPtr<nsPluginElement> mPluginElement;
+  nsString mName;
+};
+
+#endif /* nsMimeTypeArray_h___ */