15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2010 Google Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 1202772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * documentation and/or other materials provided with the distribution. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 3. Neither the name of Google, Inc. nor the names of 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * its contributors may be used to endorse or promote products derived 1502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * from this software without specific prior written permission. 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef FrameLoaderStateMachine_h 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define FrameLoaderStateMachine_h 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 32e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/Noncopyable.h" 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 34c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)// Encapsulates a state machine for FrameLoader. Note that this is different from FrameState, 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)// which stores the state of the current load that FrameLoader is executing. 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class FrameLoaderStateMachine { 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_NONCOPYABLE(FrameLoaderStateMachine); 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FrameLoaderStateMachine(); 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Once a load has been committed, the state may 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // alternate between CommittedFirstRealLoad and FirstLayoutDone. 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Otherwise, the states only go down the list. 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) enum State { 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CreatingInitialEmptyDocument, 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) DisplayingInitialEmptyDocument, 4951b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles) CommittedFirstRealLoad, 5051b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles) CommittedMultipleRealLoads 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool committedFirstRealDocumentLoad() const; 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool creatingInitialEmptyDocument() const; 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isDisplayingInitialEmptyDocument() const; 5651b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles) bool committedMultipleRealLoads() const; 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void advanceTo(State); 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) State m_state; 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 63c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // FrameLoaderStateMachine_h 66