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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/TabGroup.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/Telemetry.h"
#include "mozilla/ThrottledEventQueue.h"
#include "nsIDocShell.h"
#include "nsIEffectiveTLDService.h"
#include "nsIURI.h"
namespace mozilla {
namespace dom {
static StaticRefPtr<TabGroup> sChromeTabGroup;
TabGroup::TabGroup(bool aIsChrome)
{
// Do not throttle runnables from chrome windows. In theory we should
// not have abuse issues from these windows and many browser chrome
// tests have races that fail if we do throttle chrome runnables.
if (aIsChrome) {
MOZ_ASSERT(!sChromeTabGroup);
return;
}
nsCOMPtr<nsIThread> mainThread;
NS_GetMainThread(getter_AddRefs(mainThread));
MOZ_DIAGNOSTIC_ASSERT(mainThread);
// This may return nullptr during xpcom shutdown. This is ok as we
// do not guarantee a ThrottledEventQueue will be present.
mThrottledEventQueue = ThrottledEventQueue::Create(mainThread);
}
TabGroup::~TabGroup()
{
MOZ_ASSERT(mDocGroups.IsEmpty());
MOZ_ASSERT(mWindows.IsEmpty());
}
TabGroup*
TabGroup::GetChromeTabGroup()
{
if (!sChromeTabGroup) {
sChromeTabGroup = new TabGroup(true /* chrome tab group */);
ClearOnShutdown(&sChromeTabGroup);
}
return sChromeTabGroup;
}
already_AddRefed<DocGroup>
TabGroup::GetDocGroup(const nsACString& aKey)
{
RefPtr<DocGroup> docGroup(mDocGroups.GetEntry(aKey)->mDocGroup);
return docGroup.forget();
}
already_AddRefed<DocGroup>
TabGroup::AddDocument(const nsACString& aKey, nsIDocument* aDocument)
{
HashEntry* entry = mDocGroups.PutEntry(aKey);
RefPtr<DocGroup> docGroup;
if (entry->mDocGroup) {
docGroup = entry->mDocGroup;
} else {
docGroup = new DocGroup(this, aKey);
entry->mDocGroup = docGroup;
}
// Make sure that the hashtable was updated and now contains the correct value
MOZ_ASSERT(RefPtr<DocGroup>(GetDocGroup(aKey)) == docGroup);
docGroup->mDocuments.AppendElement(aDocument);
return docGroup.forget();
}
/* static */ already_AddRefed<TabGroup>
TabGroup::Join(nsPIDOMWindowOuter* aWindow, TabGroup* aTabGroup)
{
RefPtr<TabGroup> tabGroup = aTabGroup;
if (!tabGroup) {
tabGroup = new TabGroup();
}
MOZ_ASSERT(!tabGroup->mWindows.Contains(aWindow));
tabGroup->mWindows.AppendElement(aWindow);
return tabGroup.forget();
}
void
TabGroup::Leave(nsPIDOMWindowOuter* aWindow)
{
MOZ_ASSERT(mWindows.Contains(aWindow));
mWindows.RemoveElement(aWindow);
}
nsresult
TabGroup::FindItemWithName(const nsAString& aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem* aOriginalRequestor,
nsIDocShellTreeItem** aFoundItem)
{
NS_ENSURE_ARG_POINTER(aFoundItem);
*aFoundItem = nullptr;
MOZ_ASSERT(!aName.LowerCaseEqualsLiteral("_blank") &&
!aName.LowerCaseEqualsLiteral("_top") &&
!aName.LowerCaseEqualsLiteral("_parent") &&
!aName.LowerCaseEqualsLiteral("_self"));
for (nsPIDOMWindowOuter* outerWindow : mWindows) {
// Ignore non-toplevel windows
if (outerWindow->GetScriptableParentOrNull()) {
continue;
}
nsCOMPtr<nsIDocShellTreeItem> docshell = outerWindow->GetDocShell();
if (!docshell) {
continue;
}
nsCOMPtr<nsIDocShellTreeItem> root;
docshell->GetSameTypeRootTreeItem(getter_AddRefs(root));
MOZ_RELEASE_ASSERT(docshell == root);
if (root && aRequestor != root) {
root->FindItemWithName(aName, this, aOriginalRequestor, aFoundItem);
if (*aFoundItem) {
break;
}
}
}
return NS_OK;
}
nsTArray<nsPIDOMWindowOuter*>
TabGroup::GetTopLevelWindows()
{
nsTArray<nsPIDOMWindowOuter*> array;
for (nsPIDOMWindowOuter* outerWindow : mWindows) {
if (!outerWindow->GetScriptableParentOrNull()) {
array.AppendElement(outerWindow);
}
}
return array;
}
ThrottledEventQueue*
TabGroup::GetThrottledEventQueue() const
{
return mThrottledEventQueue;
}
NS_IMPL_ISUPPORTS(TabGroup, nsISupports)
TabGroup::HashEntry::HashEntry(const nsACString* aKey)
: nsCStringHashKey(aKey), mDocGroup(nullptr)
{}
}
}
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