Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Apple 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 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #include "config.h" |
| 28 | #include "core/dom/ContextLifecycleObserver.h" |
| 29 | |
| 30 | #include "core/dom/ScriptExecutionContext.h" |
| 31 | |
| 32 | namespace WebCore { |
| 33 | |
| 34 | ContextLifecycleObserver::ContextLifecycleObserver(ScriptExecutionContext* scriptExecutionContext, Type type) |
Ben Murdoch | 0019e4e | 2013-07-18 11:57:54 +0100 | [diff] [blame] | 35 | : LifecycleObserver(scriptExecutionContext) |
| 36 | , m_scriptExecutionContext(0) |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 37 | { |
| 38 | observeContext(scriptExecutionContext, type); |
| 39 | } |
| 40 | |
| 41 | ContextLifecycleObserver::~ContextLifecycleObserver() |
| 42 | { |
| 43 | if (m_scriptExecutionContext) |
| 44 | observeContext(0, GenericType); |
| 45 | } |
| 46 | |
| 47 | void ContextLifecycleObserver::observeContext(ScriptExecutionContext* scriptExecutionContext, Type as) |
| 48 | { |
| 49 | if (m_scriptExecutionContext) { |
| 50 | ASSERT(m_scriptExecutionContext->isContextThread()); |
| 51 | m_scriptExecutionContext->wasUnobservedBy(this, as); |
| 52 | } |
| 53 | |
| 54 | m_scriptExecutionContext = scriptExecutionContext; |
Ben Murdoch | 0019e4e | 2013-07-18 11:57:54 +0100 | [diff] [blame] | 55 | m_lifecycleContext = scriptExecutionContext; |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 56 | |
| 57 | if (m_scriptExecutionContext) { |
| 58 | ASSERT(m_scriptExecutionContext->isContextThread()); |
| 59 | m_scriptExecutionContext->wasObservedBy(this, as); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | void ContextLifecycleObserver::contextDestroyed() |
| 64 | { |
| 65 | m_scriptExecutionContext = 0; |
Ben Murdoch | 0019e4e | 2013-07-18 11:57:54 +0100 | [diff] [blame] | 66 | |
| 67 | LifecycleObserver::contextDestroyed(); |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | } // namespace WebCore |