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/* 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_BrowsingContextWebProgress_h
#define mozilla_dom_BrowsingContextWebProgress_h
#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"
#include "nsTObserverArray.h"
#include "nsWeakReference.h"
#include "nsCycleCollectionParticipant.h"
namespace mozilla::dom {
class CanonicalBrowsingContext;
/// Object acting as the nsIWebProgress instance for a BrowsingContext over its
/// lifetime.
///
/// An active toplevel CanonicalBrowsingContext will always have a
/// BrowsingContextWebProgress, which will be moved between contexts as
/// BrowsingContextGroup-changing loads are performed.
///
/// Subframes will only have a `BrowsingContextWebProgress` if they are loaded
/// in a content process, and will use the nsDocShell instead if they are loaded
/// in the parent process, as parent process documents cannot have or be
/// out-of-process iframes.
class BrowsingContextWebProgress final : public nsIWebProgress,
public nsIWebProgressListener {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(BrowsingContextWebProgress,
nsIWebProgress)
NS_DECL_NSIWEBPROGRESS
NS_DECL_NSIWEBPROGRESSLISTENER
explicit BrowsingContextWebProgress(
CanonicalBrowsingContext* aBrowsingContext);
struct ListenerInfo {
ListenerInfo(nsIWeakReference* aListener, unsigned long aNotifyMask)
: mWeakListener(aListener), mNotifyMask(aNotifyMask) {}
bool operator==(const ListenerInfo& aOther) const {
return mWeakListener == aOther.mWeakListener;
}
bool operator==(const nsWeakPtr& aOther) const {
return mWeakListener == aOther;
}
// Weak pointer for the nsIWebProgressListener...
nsWeakPtr mWeakListener;
// Mask indicating which notifications the listener wants to receive.
unsigned long mNotifyMask;
};
void ContextDiscarded();
void ContextReplaced(CanonicalBrowsingContext* aNewContext);
void SetLoadType(uint32_t aLoadType) { mLoadType = aLoadType; }
private:
virtual ~BrowsingContextWebProgress();
void UpdateAndNotifyListeners(
uint32_t aFlag,
const std::function<void(nsIWebProgressListener*)>& aCallback);
using ListenerArray = nsAutoTObserverArray<ListenerInfo, 4>;
ListenerArray mListenerInfoList;
// The current BrowsingContext which owns this BrowsingContextWebProgress.
// This context may change during navigations and may not be fully attached at
// all times.
RefPtr<CanonicalBrowsingContext> mCurrentBrowsingContext;
// The current request being actively loaded by the BrowsingContext. Only set
// while mIsLoadingDocument is true, and is used to fire STATE_STOP
// notifications if the BrowsingContext is discarded while the load is
// ongoing.
nsCOMPtr<nsIRequest> mLoadingDocumentRequest;
// The most recent load type observed for this BrowsingContextWebProgress.
uint32_t mLoadType = 0;
// Are we currently in the process of loading a document? This is true between
// the `STATE_START` notification from content and the `STATE_STOP`
// notification being received. Duplicate `STATE_START` events may be
// discarded while loading a document to avoid noise caused by process
// switches.
bool mIsLoadingDocument = false;
};
} // namespace mozilla::dom
#endif // mozilla_dom_BrowsingContextWebProgress_h
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