1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#pragma once
22
23#include "CSSPropertyNames.h"
24#include "ExceptionOr.h"
25#include "ScriptWrappable.h"
26
27namespace WebCore {
28
29class CSSProperty;
30class CSSRule;
31class CSSStyleSheet;
32class CSSValue;
33class DeprecatedCSSOMValue;
34class MutableStyleProperties;
35class StyleProperties;
36class StyledElement;
37
38class CSSStyleDeclaration : public ScriptWrappable {
39 WTF_MAKE_NONCOPYABLE(CSSStyleDeclaration);
40 WTF_MAKE_ISO_ALLOCATED(CSSStyleDeclaration);
41public:
42 virtual ~CSSStyleDeclaration() = default;
43
44 virtual void ref() = 0;
45 virtual void deref() = 0;
46
47 virtual StyledElement* parentElement() const { return nullptr; }
48 virtual CSSRule* parentRule() const = 0;
49 virtual String cssText() const = 0;
50 virtual ExceptionOr<void> setCssText(const String&) = 0;
51 virtual unsigned length() const = 0;
52 virtual String item(unsigned index) const = 0;
53 virtual RefPtr<DeprecatedCSSOMValue> getPropertyCSSValue(const String& propertyName) = 0;
54 virtual String getPropertyValue(const String& propertyName) = 0;
55 virtual String getPropertyPriority(const String& propertyName) = 0;
56 virtual String getPropertyShorthand(const String& propertyName) = 0;
57 virtual bool isPropertyImplicit(const String& propertyName) = 0;
58 virtual ExceptionOr<void> setProperty(const String& propertyName, const String& value, const String& priority) = 0;
59 virtual ExceptionOr<String> removeProperty(const String& propertyName) = 0;
60
61 String cssFloat();
62 ExceptionOr<void> setCssFloat(const String&);
63
64 // CSSPropertyID versions of the CSSOM functions to support bindings and editing.
65 // Use the non-virtual methods in the concrete subclasses when possible.
66 // The CSSValue returned by this function should not be exposed to the web as it may be used by multiple documents at the same time.
67 virtual RefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) = 0;
68 virtual String getPropertyValueInternal(CSSPropertyID) = 0;
69 virtual ExceptionOr<bool> setPropertyInternal(CSSPropertyID, const String& value, bool important) = 0;
70
71 virtual Ref<MutableStyleProperties> copyProperties() const = 0;
72
73 virtual CSSStyleSheet* parentStyleSheet() const { return nullptr; }
74
75 // Bindings support.
76 Optional<Variant<String, double>> namedItem(const AtomicString&);
77 ExceptionOr<void> setNamedItem(const AtomicString& name, String value, bool& propertySupported);
78 Vector<AtomicString> supportedPropertyNames() const;
79
80 static CSSPropertyID getCSSPropertyIDFromJavaScriptPropertyName(const AtomicString&);
81protected:
82 CSSStyleDeclaration() = default;
83};
84
85} // namespace WebCore
86