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/* -*- 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 mozilla_dom_BrowserHost_h
#define mozilla_dom_BrowserHost_h
#include "nsIRemoteTab.h"
#include "mozilla/dom/RemoteBrowser.h"
#include "mozilla/dom/BrowserParent.h"
class nsPIDOMWindowOuter;
namespace mozilla {
namespace a11y {
class DocAccessibleParent;
} // namespace a11y
namespace dom {
class Element;
/**
* BrowserHost manages a remote browser from the chrome process.
*
* It is used via the RemoteBrowser interface in nsFrameLoader and supports
* operations over the tree of BrowserParent/BrowserBridgeParent's.
*
* See `dom/docs/Fission-IPC-Diagram.svg` for an overview of the DOM IPC
* actors.
*/
class BrowserHost : public RemoteBrowser,
public nsIRemoteTab,
public nsSupportsWeakReference {
public:
typedef mozilla::layers::LayersId LayersId;
explicit BrowserHost(BrowserParent* aParent);
static BrowserHost* GetFrom(nsIRemoteTab* aRemoteTab);
// NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
// nsIRemoteTab
NS_DECL_NSIREMOTETAB
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(BrowserHost, RemoteBrowser)
// Get the IPDL actor for the root BrowserParent. This method should be
// avoided and consumers migrated to use this class.
BrowserParent* GetActor() { return mRoot; }
ContentParent* GetContentParent() const {
return mRoot ? mRoot->Manager() : nullptr;
}
BrowserHost* AsBrowserHost() override { return this; }
BrowserBridgeHost* AsBrowserBridgeHost() override { return nullptr; }
TabId GetTabId() const override;
LayersId GetLayersId() const override;
BrowsingContext* GetBrowsingContext() const override;
nsILoadContext* GetLoadContext() const override;
bool CanRecv() const override;
Element* GetOwnerElement() const { return mRoot->GetOwnerElement(); }
already_AddRefed<nsPIDOMWindowOuter> GetParentWindowOuter() const {
return mRoot->GetParentWindowOuter();
}
a11y::DocAccessibleParent* GetTopLevelDocAccessible() const;
// Visit each BrowserParent in the tree formed by PBrowser and
// PBrowserBridge that is anchored by `mRoot`.
template <typename Callback>
void VisitAll(Callback aCallback) {
if (!mRoot) {
return;
}
mRoot->VisitAll(aCallback);
}
void LoadURL(nsDocShellLoadState* aLoadState) override;
void ResumeLoad(uint64_t aPendingSwitchId) override;
void DestroyStart() override;
void DestroyComplete() override;
bool Show(const OwnerShowInfo&) override;
void UpdateDimensions(const nsIntRect& aRect,
const ScreenIntSize& aSize) override;
void UpdateEffects(EffectsInfo aInfo) override;
private:
virtual ~BrowserHost() = default;
// The TabID for the root BrowserParent, we cache this so that we can access
// it after the remote browser has been destroyed
TabId mId;
// The root BrowserParent of this remote browser
RefPtr<BrowserParent> mRoot;
EffectsInfo mEffectsInfo;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_BrowserHost_h
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