1 /*
2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3  * Copyright (C) 2004, 2006, 2008, 2009, 2010, 2012 Apple Inc. All rights
4  * reserved.
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public License
17  * along with this library; see the file COPYING.LIB.  If not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  */
21 
22 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_LIST_H_
23 #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_LIST_H_
24 
25 #include "third_party/blink/renderer/core/core_export.h"
26 #include "third_party/blink/renderer/core/css/media_query.h"
27 #include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
28 #include "third_party/blink/renderer/platform/heap/handle.h"
29 #include "third_party/blink/renderer/platform/wtf/forward.h"
30 #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
31 #include "third_party/blink/renderer/platform/wtf/vector.h"
32 
33 namespace blink {
34 
35 class CSSRule;
36 class CSSStyleSheet;
37 class ExceptionState;
38 class ExecutionContext;
39 class MediaList;
40 class MediaQuery;
41 
42 class CORE_EXPORT MediaQuerySet : public RefCounted<MediaQuerySet> {
43  public:
Create()44   static scoped_refptr<MediaQuerySet> Create() {
45     return base::AdoptRef(new MediaQuerySet());
46   }
47   static scoped_refptr<MediaQuerySet> Create(const String& media_string,
48                                              const ExecutionContext*);
49 
50   bool Set(const String&, const ExecutionContext*);
51   bool Add(const String&, const ExecutionContext*);
52   bool Remove(const String&, const ExecutionContext*);
53 
54   void AddMediaQuery(std::unique_ptr<MediaQuery>);
55 
QueryVector()56   const Vector<std::unique_ptr<MediaQuery>>& QueryVector() const {
57     return queries_;
58   }
59 
60   String MediaText() const;
61 
Copy()62   scoped_refptr<MediaQuerySet> Copy() const {
63     return base::AdoptRef(new MediaQuerySet(*this));
64   }
65 
66  private:
67   MediaQuerySet();
68   MediaQuerySet(const MediaQuerySet&);
69 
70   Vector<std::unique_ptr<MediaQuery>> queries_;
71 };
72 
73 class MediaList final : public ScriptWrappable {
74   DEFINE_WRAPPERTYPEINFO();
75 
76  public:
77   MediaList(scoped_refptr<MediaQuerySet>, CSSStyleSheet* parent_sheet);
78   MediaList(scoped_refptr<MediaQuerySet>, CSSRule* parent_rule);
79 
length()80   unsigned length() const { return media_queries_->QueryVector().size(); }
81   String item(unsigned index) const;
82   void deleteMedium(const ExecutionContext*,
83                     const String& old_medium,
84                     ExceptionState&);
85   void appendMedium(const ExecutionContext*, const String& new_medium);
86 
87   // Note that this getter doesn't require the ExecutionContext, but the
88   // attribute is marked as [CallWith=ExecutionContext] so that the setter can
89   // have access to the ExecutionContext.
mediaText(const ExecutionContext *)90   String mediaText(const ExecutionContext*) const {
91     return media_queries_->MediaText();
92   }
93   void setMediaText(const ExecutionContext*, const String&);
94 
95   // Not part of CSSOM.
ParentRule()96   CSSRule* ParentRule() const { return parent_rule_; }
ParentStyleSheet()97   CSSStyleSheet* ParentStyleSheet() const { return parent_style_sheet_; }
98 
Queries()99   const MediaQuerySet* Queries() const { return media_queries_.get(); }
100 
101   void Reattach(scoped_refptr<MediaQuerySet>);
102 
103   void Trace(Visitor*) const override;
104 
105  private:
106   scoped_refptr<MediaQuerySet> media_queries_;
107   Member<CSSStyleSheet> parent_style_sheet_;
108   Member<CSSRule> parent_rule_;
109 };
110 
111 }  // namespace blink
112 
113 #endif
114