flutter_flutter/sky/engine/core/css/CSSStyleSheet.cpp
Hixie 87e83e552d Remove EventTarget, and subsequent fallout.
The primary goal of this change was to remove EventTarget from the
sky_engine C++ code. Since EventTarget is so core to the entire event
system that sky_engine was based on, this is a rather invasive change.
As such, it had some knock-on effects. I deleted some of the files
that were affected, and cauterised the remainder.

In many cases, a file would depend on another file that it didn't
include directly, but instead included indirectly via another file
that I deleted. When this happened, if the features that this broke
were obsolete, I sometimes just removed the features instead.

Specifically:
- removed EventTarget
- removed EventQueue, since without a target, what's a queue going to
  do?
- same with EventDispatch*
- removed ExecutionContext, since it had an EventQueue and nothing
  else it did was relevant to Sky anymore
- removed ActiveDOMObject, which was all about ExecutionContexts
- removed ContextLifecycleNotifier since it dependend on
  ExecutionContext and ActiveDOMObject
- removed the other Lifecycle classes for consistency, and replaced
  them with four booleans in the Document class
- removed some of the attributes that are no longer relevant from
  IDLExtendedAttributes (ConstructorCallWith and
  CallWith=ExecutionContext)
- removed the Document member on DOMDartState since we never set it to
  anything but null.
- removed BuiltinSky::InstallWindow since it relied on the Document
  member of DOMDartState
- removed EventHandler, EventListener, and mentions of those in
  various binding scripts
- removed NewEventHandler, since we're not using that either
- removed the following interfaces from the Sky Dart API:
  - EventTarget
  - EventListener (since without a target, there's no way to listen)
  - FocusEvent (since it's only member was an EventTarget)
  - HashChangeEvent (mostly by accident, but it's defunct anyway)
  - FontFace (it used ConstructorCallWith=ExecutionContext)
- changed the following interfaces of the Sky DART API:
  - MediaQueryList is no longer an EventTarget
  - Node is no longer an EventTarget
  - Document no longer has defaultView (depended on
    DOMDartState's document)
  - DocumentFragment, Element, Range, and Text no longer have a
    constructor (they all depended on DOMDartState's document, which
    is now gone)
  - Event lost its EventTarget members and path.
  - Window lost its WindowTimers partial interface (it used
    EventTarget and ExecutionContext a lot)
- removed numerous hacks in the bindings around features that are now
  gone, like addEventListener
- removed a bunch of console logging code, since that relied on
  ExecutionContext
- cauterised the wound in FontFace.cpp by removing constructors and
  methods that called now-removed features
- same with MediaQuery and friends
- same with some editor features and focus-related features
- same with Document
- removed DOMTimer classes since they use ExecutionContexts
2015-07-16 14:40:10 -07:00

85 lines
2.7 KiB
C++

/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2006, 2007, 2012 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "sky/engine/core/css/CSSStyleSheet.h"
#include "sky/engine/core/css/MediaList.h"
#include "sky/engine/core/css/StyleSheetContents.h"
#include "sky/engine/core/dom/Document.h"
#include "sky/engine/core/dom/Node.h"
namespace blink {
#if ENABLE(ASSERT)
static bool isAcceptableCSSStyleSheetParent(Node* parentNode)
{
// Only these nodes can be parents of StyleSheets, and they need to call
// clearOwnerNode() when moved out of document.
// Destruction of the style sheet counts as being "moved out of the
// document", but only in the non-oilpan version of blink. I.e. don't call
// clearOwnerNode() in the owner's destructor in oilpan.
return !parentNode
|| parentNode->isDocumentNode();
}
#endif
PassRefPtr<CSSStyleSheet> CSSStyleSheet::create(PassRefPtr<StyleSheetContents> sheet, Node* ownerNode)
{
ASSERT(sheet);
return adoptRef(new CSSStyleSheet(sheet, ownerNode));
}
PassRefPtr<CSSStyleSheet> CSSStyleSheet::create(Node* ownerNode, const KURL& baseURL)
{
CSSParserContext parserContext(ownerNode->document(), baseURL);
RefPtr<StyleSheetContents> sheet = StyleSheetContents::create(&ownerNode->document(), parserContext);
return adoptRef(new CSSStyleSheet(sheet.release(), ownerNode));
}
CSSStyleSheet::CSSStyleSheet(PassRefPtr<StyleSheetContents> contents, Node* ownerNode)
: m_contents(contents)
, m_ownerNode(ownerNode)
{
ASSERT(isAcceptableCSSStyleSheetParent(ownerNode));
}
CSSStyleSheet::~CSSStyleSheet()
{
}
void CSSStyleSheet::setMediaQueries(PassRefPtr<MediaQuerySet> mediaQueries)
{
m_mediaQueries = mediaQueries;
}
void CSSStyleSheet::clearOwnerNode()
{
if (Document* owner = ownerDocument())
owner->styleResolverChanged();
m_ownerNode = nullptr;
}
Document* CSSStyleSheet::ownerDocument() const
{
return ownerNode() ? &ownerNode()->document() : 0;
}
} // namespace blink