| /* |
| * Copyright (C) 2010 Google Inc. 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 Google, Inc. 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 THE COPYRIGHT HOLDERS AND 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. |
| */ |
| |
| #pragma once |
| |
| #include <wtf/Noncopyable.h> |
| |
| namespace WebCore { |
| |
| // Encapsulates a state machine for FrameLoader. Note that this is different from FrameState, |
| // which stores the state of the current load that FrameLoader is executing. |
| class FrameLoaderStateMachine { |
| WTF_MAKE_NONCOPYABLE(FrameLoaderStateMachine); |
| public: |
| FrameLoaderStateMachine(); |
| |
| // Once a load has been committed, the state may |
| // alternate between CommittedFirstRealLoad and FirstLayoutDone. |
| // Otherwise, the states only go down the list. |
| enum State { |
| CreatingInitialEmptyDocument, |
| DisplayingInitialEmptyDocument, |
| DisplayingInitialEmptyDocumentPostCommit, |
| CommittedFirstRealLoad, |
| FirstLayoutDone |
| }; |
| |
| WEBCORE_EXPORT bool committingFirstRealLoad() const; |
| bool committedFirstRealDocumentLoad() const; |
| bool creatingInitialEmptyDocument() const; |
| WEBCORE_EXPORT bool isDisplayingInitialEmptyDocument() const; |
| WEBCORE_EXPORT bool firstLayoutDone() const; |
| void advanceTo(State); |
| |
| private: |
| State m_state; |
| }; |
| |
| } // namespace WebCore |