third_party/WebKit/Source/core/loader/FrameLoaderStateMachine.cpp

   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 blink {
  35
  36
  37 FrameLoaderStateMachine::FrameLoaderStateMachine()
  38     : m_state(CreatingInitialEmptyDocument)
  39 {
  40 }
  41
  42 bool FrameLoaderStateMachine::committedFirstRealDocumentLoad() const
  43 {
  44     return m_state >= CommittedFirstRealLoad;
  45 }
  46
  47 bool FrameLoaderStateMachine::creatingInitialEmptyDocument() const
  48 {
  49     return m_state == CreatingInitialEmptyDocument;
  50 }
  51
  52 bool FrameLoaderStateMachine::committedMultipleRealLoads() const
  53 {
  54     return m_state == CommittedMultipleRealLoads;
  55 }
  56
  57 bool FrameLoaderStateMachine::isDisplayingInitialEmptyDocument() const
  58 {
  59     return m_state >= DisplayingInitialEmptyDocument && m_state < CommittedFirstRealLoad;
  60 }
  61
  62 void FrameLoaderStateMachine::advanceTo(State state)
  63 {
  64     ASSERT(m_state < state);
  65     m_state = state;
  66 }
  67
  68 } // namespace blink