summaryrefslogtreecommitdiffstats
path: root/dom/base/TabGroup.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/base/TabGroup.h')
-rw-r--r--dom/base/TabGroup.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/dom/base/TabGroup.h b/dom/base/TabGroup.h
new file mode 100644
index 000000000..f9fa9eec5
--- /dev/null
+++ b/dom/base/TabGroup.h
@@ -0,0 +1,118 @@
+/* -*- 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 TabGroup_h
+#define TabGroup_h
+
+#include "nsISupports.h"
+#include "nsISupportsImpl.h"
+#include "nsIPrincipal.h"
+#include "nsTHashtable.h"
+#include "nsString.h"
+
+#include "mozilla/RefPtr.h"
+
+namespace mozilla {
+class ThrottledEventQueue;
+namespace dom {
+
+// Two browsing contexts are considered "related" if they are reachable from one
+// another through window.opener, window.parent, or window.frames. This is the
+// spec concept of a "unit of related browsing contexts"
+//
+// Two browsing contexts are considered "similar-origin" if they can be made to
+// have the same origin by setting document.domain. This is the spec concept of
+// a "unit of similar-origin related browsing contexts"
+//
+// A TabGroup is a set of browsing contexts which are all "related". Within a
+// TabGroup, browsing contexts are broken into "similar-origin" DocGroups. In
+// more detail, a DocGroup is actually a collection of documents, and a
+// TabGroup is a collection of DocGroups. A TabGroup typically will contain
+// (through its DocGroups) the documents from one or more tabs related by
+// window.opener. A DocGroup is a member of exactly one TabGroup.
+
+class DocGroup;
+
+class TabGroup final : public nsISupports
+{
+private:
+ class HashEntry : public nsCStringHashKey
+ {
+ public:
+ // NOTE: Weak reference. The DocGroup destructor removes itself from its
+ // owning TabGroup.
+ DocGroup* mDocGroup;
+ explicit HashEntry(const nsACString* aKey);
+ };
+
+ typedef nsTHashtable<HashEntry> DocGroupMap;
+public:
+ typedef DocGroupMap::Iterator Iterator;
+
+ friend class DocGroup;
+
+ NS_DECL_THREADSAFE_ISUPPORTS
+
+ static TabGroup*
+ GetChromeTabGroup();
+
+ explicit TabGroup(bool aIsChrome = false);
+
+ // Get the docgroup for the corresponding doc group key.
+ // Returns null if the given key hasn't been seen yet.
+ already_AddRefed<DocGroup>
+ GetDocGroup(const nsACString& aKey);
+
+ already_AddRefed<DocGroup>
+ AddDocument(const nsACString& aKey, nsIDocument* aDocument);
+
+ // Join the specified TabGroup, returning a reference to it. If aTabGroup is
+ // nullptr, create a new tabgroup to join.
+ static already_AddRefed<TabGroup>
+ Join(nsPIDOMWindowOuter* aWindow, TabGroup* aTabGroup);
+
+ void Leave(nsPIDOMWindowOuter* aWindow);
+
+ Iterator Iter()
+ {
+ return mDocGroups.Iter();
+ }
+
+
+ // Returns the nsIDocShellTreeItem with the given name, searching each of the
+ // docShell trees which are within this TabGroup. It will pass itself as
+ // aRequestor to each docShellTreeItem which it asks to search for the name,
+ // and will not search the docShellTreeItem which is passed as aRequestor.
+ //
+ // This method is used in order to correctly namespace named windows based on
+ // their unit of related browsing contexts.
+ //
+ // It is illegal to pass in the special case-insensitive names "_blank",
+ // "_self", "_parent" or "_top", as those should be handled elsewhere.
+ nsresult
+ FindItemWithName(const nsAString& aName,
+ nsIDocShellTreeItem* aRequestor,
+ nsIDocShellTreeItem* aOriginalRequestor,
+ nsIDocShellTreeItem** aFoundItem);
+
+ nsTArray<nsPIDOMWindowOuter*> GetTopLevelWindows();
+
+ // Get the event queue that associated windows can use to issue runnables to
+ // the main thread. This may return nullptr during browser shutdown.
+ ThrottledEventQueue*
+ GetThrottledEventQueue() const;
+
+private:
+ ~TabGroup();
+ DocGroupMap mDocGroups;
+ nsTArray<nsPIDOMWindowOuter*> mWindows;
+ RefPtr<ThrottledEventQueue> mThrottledEventQueue;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // defined(TabGroup_h)