зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
3.8 KiB
C++
114 строки
3.8 KiB
C++
/* -*- 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_PopupBlocker_h
|
|
#define mozilla_dom_PopupBlocker_h
|
|
|
|
#include "mozilla/BasicEvents.h"
|
|
|
|
class nsIPrincipal;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class PopupBlocker final {
|
|
public:
|
|
// Popup control state enum. The values in this enum must go from most
|
|
// permissive to least permissive so that it's safe to push state in
|
|
// all situations. Pushing popup state onto the stack never makes the
|
|
// current popup state less permissive.
|
|
// Keep this in sync with PopupBlockerState webidl dictionary!
|
|
enum PopupControlState {
|
|
openAllowed = 0, // open that window without worries
|
|
openControlled, // it's a popup, but allow it
|
|
openBlocked, // it's a popup, but not from an allowed event
|
|
openAbused, // it's a popup. disallow it, but allow domain override.
|
|
openOverridden // disallow window open
|
|
};
|
|
|
|
static PopupControlState PushPopupControlState(PopupControlState aState,
|
|
bool aForce);
|
|
|
|
static void PopPopupControlState(PopupControlState aState);
|
|
|
|
static PopupControlState GetPopupControlState();
|
|
|
|
static void PopupStatePusherCreated();
|
|
static void PopupStatePusherDestroyed();
|
|
|
|
// This method checks if the principal is allowed by open popups by user
|
|
// permissions. In this case, the caller should not block popups.
|
|
static bool CanShowPopupByPermission(nsIPrincipal* aPrincipal);
|
|
|
|
// This method returns true if the caller is allowed to show a popup, and it
|
|
// consumes the popup token for the current event. There is just 1 popup
|
|
// allowed per event.
|
|
static bool TryUsePopupOpeningToken();
|
|
|
|
static bool IsPopupOpeningTokenUnused();
|
|
|
|
static PopupBlocker::PopupControlState GetEventPopupControlState(
|
|
WidgetEvent* aEvent, Event* aDOMEvent = nullptr);
|
|
|
|
static void Initialize();
|
|
static void Shutdown();
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
#define NS_AUTO_POPUP_STATE_PUSHER nsAutoPopupStatePusherInternal
|
|
#else
|
|
#define NS_AUTO_POPUP_STATE_PUSHER nsAutoPopupStatePusherExternal
|
|
#endif
|
|
|
|
// Helper class that helps with pushing and popping popup control
|
|
// state. Note that this class looks different from within code that's
|
|
// part of the layout library than it does in code outside the layout
|
|
// library. We give the two object layouts different names so the symbols
|
|
// don't conflict, but code should always use the name
|
|
// |nsAutoPopupStatePusher|.
|
|
class NS_AUTO_POPUP_STATE_PUSHER {
|
|
public:
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
explicit NS_AUTO_POPUP_STATE_PUSHER(
|
|
mozilla::dom::PopupBlocker::PopupControlState aState,
|
|
bool aForce = false);
|
|
~NS_AUTO_POPUP_STATE_PUSHER();
|
|
#else
|
|
NS_AUTO_POPUP_STATE_PUSHER(
|
|
nsPIDOMWindowOuter* aWindow,
|
|
mozilla::dom::PopupBlocker::PopupControlState aState)
|
|
: mWindow(aWindow), mOldState(openAbused) {
|
|
if (aWindow) {
|
|
mOldState = PopupBlocker::PushPopupControlState(aState, false);
|
|
}
|
|
}
|
|
|
|
~NS_AUTO_POPUP_STATE_PUSHER() {
|
|
if (mWindow) {
|
|
PopupBlocker::PopPopupControlState(mOldState);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
protected:
|
|
#ifndef MOZILLA_INTERNAL_API
|
|
nsCOMPtr<nsPIDOMWindowOuter> mWindow;
|
|
#endif
|
|
mozilla::dom::PopupBlocker::PopupControlState mOldState;
|
|
|
|
private:
|
|
// Hide so that this class can only be stack-allocated
|
|
static void* operator new(size_t /*size*/) CPP_THROW_NEW { return nullptr; }
|
|
static void operator delete(void* /*memory*/) {}
|
|
};
|
|
|
|
#define nsAutoPopupStatePusher NS_AUTO_POPUP_STATE_PUSHER
|
|
|
|
#endif // mozilla_PopupBlocker_h
|