| /* |
| * 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. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_FRAME_LOADER_STATE_MACHINE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_FRAME_LOADER_STATE_MACHINE_H_ |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| // 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 CORE_EXPORT FrameLoaderStateMachine { |
| DISALLOW_NEW(); |
| |
| 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 { |
| kCreatingInitialEmptyDocument, |
| kDisplayingInitialEmptyDocument, |
| kCommittedFirstRealLoad, |
| kCommittedMultipleRealLoads |
| }; |
| |
| bool CommittedFirstRealDocumentLoad() const; |
| bool CreatingInitialEmptyDocument() const; |
| bool IsDisplayingInitialEmptyDocument() const; |
| bool CommittedMultipleRealLoads() const; |
| void AdvanceTo(State); |
| |
| String ToString() const; |
| |
| private: |
| State state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FrameLoaderStateMachine); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_FRAME_LOADER_STATE_MACHINE_H_ |