| /* |
| * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. |
| * (http://www.torchmobile.com/) |
| * Copyright (C) 2009 Adam Barth. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef NavigationScheduler_h |
| #define NavigationScheduler_h |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/scoped_refptr.h" |
| #include "core/CoreExport.h" |
| #include "core/dom/Document.h" |
| #include "platform/WebTaskRunner.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/weborigin/KURL.h" |
| #include "platform/wtf/Forward.h" |
| #include "platform/wtf/HashMap.h" |
| #include "platform/wtf/text/WTFString.h" |
| #include "public/platform/scheduler/web_main_thread_scheduler.h" |
| |
| namespace blink { |
| |
| class FormSubmission; |
| class LocalFrame; |
| class ScheduledNavigation; |
| |
| class CORE_EXPORT NavigationScheduler final |
| : public GarbageCollectedFinalized<NavigationScheduler> { |
| public: |
| static NavigationScheduler* Create(LocalFrame* frame) { |
| return new NavigationScheduler(frame); |
| } |
| |
| ~NavigationScheduler(); |
| |
| bool LocationChangePending(); |
| bool IsNavigationScheduledWithin(double interval_in_seconds) const; |
| |
| void ScheduleRedirect(double delay, const KURL&, Document::HttpRefreshType); |
| void ScheduleFrameNavigation(Document*, |
| const KURL&, |
| bool replaces_current_item = true); |
| void SchedulePageBlock(Document*, int reason); |
| void ScheduleFormSubmission(Document*, FormSubmission*); |
| void ScheduleReload(); |
| |
| void StartTimer(); |
| void Cancel(); |
| |
| void Trace(blink::Visitor*); |
| |
| private: |
| explicit NavigationScheduler(LocalFrame*); |
| |
| bool ShouldScheduleReload() const; |
| bool ShouldScheduleNavigation(const KURL&) const; |
| |
| void NavigateTask(); |
| void Schedule(ScheduledNavigation*); |
| |
| static bool MustReplaceCurrentItem(LocalFrame* target_frame); |
| |
| Member<LocalFrame> frame_; |
| TaskHandle navigate_task_handle_; |
| Member<ScheduledNavigation> redirect_; |
| |
| // Exists because we can't deref m_frame in destructor. |
| scheduler::RendererScheduler::NavigatingFrameType frame_type_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NavigationScheduler); |
| }; |
| |
| class NavigationDisablerForBeforeUnload { |
| DISALLOW_COPY_AND_ASSIGN(NavigationDisablerForBeforeUnload); |
| STACK_ALLOCATED(); |
| |
| public: |
| NavigationDisablerForBeforeUnload() { navigation_disable_count_++; } |
| ~NavigationDisablerForBeforeUnload() { |
| DCHECK(navigation_disable_count_); |
| navigation_disable_count_--; |
| } |
| static bool IsNavigationAllowed() { return !navigation_disable_count_; } |
| |
| private: |
| static unsigned navigation_disable_count_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // NavigationScheduler_h |