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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Google, Inc. nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "core/loader/FrameLoaderStateMachine.h"
     31 
     32 #include "wtf/Assertions.h"
     33 
     34 namespace WebCore {
     35 
     36 
     37 FrameLoaderStateMachine::FrameLoaderStateMachine()
     38     : m_state(CreatingInitialEmptyDocument)
     39 {
     40 }
     41 
     42 bool FrameLoaderStateMachine::startedFirstRealLoad() const
     43 {
     44     return m_state >= StartedFirstRealLoad;
     45 }
     46 
     47 bool FrameLoaderStateMachine::committedFirstRealDocumentLoad() const
     48 {
     49     return m_state >= CommittedFirstRealLoad;
     50 }
     51 
     52 bool FrameLoaderStateMachine::creatingInitialEmptyDocument() const
     53 {
     54     return m_state == CreatingInitialEmptyDocument;
     55 }
     56 
     57 bool FrameLoaderStateMachine::committedMultipleRealLoads() const
     58 {
     59     return m_state == CommittedMultipleRealLoads;
     60 }
     61 
     62 bool FrameLoaderStateMachine::isDisplayingInitialEmptyDocument() const
     63 {
     64     return m_state >= DisplayingInitialEmptyDocument && m_state < CommittedFirstRealLoad;
     65 }
     66 
     67 void FrameLoaderStateMachine::advanceTo(State state)
     68 {
     69     ASSERT(m_state < state);
     70     m_state = state;
     71 }
     72 
     73 } // namespace WebCore
     74