1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* Copyright (C) 2021 Metrological Group B.V.
* Copyright (C) 2021 Igalia S.L.
* Copyright (C) 2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CachedFont.h"
#include "CachedFontClient.h"
#include "CachedResourceHandle.h"
#include "FontLoadRequest.h"
#include "FontSelectionAlgorithm.h"
#include "ScriptExecutionContext.h"
#include <wtf/text/MakeString.h>
namespace WebCore {
class FontCreationContext;
class CachedFontLoadRequest final : public FontLoadRequest, public CachedFontClient {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(Loader);
public:
CachedFontLoadRequest(CachedFont& font, ScriptExecutionContext& context)
: m_font(&font)
, m_context(context)
{
}
~CachedFontLoadRequest()
{
if (m_fontLoadRequestClient)
protectedCachedFont()->removeClient(*this);
}
CachedFont& cachedFont() const { return *m_font; }
CachedResourceHandle<CachedFont> protectedCachedFont() const { return m_font; }
private:
const URL& url() const final { return m_font->url(); }
bool isPending() const final { return m_font->status() == CachedResource::Status::Pending; }
bool isLoading() const final { return m_font->isLoading(); }
bool errorOccurred() const final { return m_font->errorOccurred(); }
bool ensureCustomFontData() final
{
bool result = m_font->ensureCustomFontData();
if (!result && m_font->didRefuseToParseCustomFontWithSafeFontParser()) {
if (RefPtr context = m_context.get()) {
auto message = makeString("[Lockdown Mode] This font wasn't parsed: "_s, m_font->url().string());
context->addConsoleMessage(MessageSource::Security, MessageLevel::Info, message);
}
}
return result;
}
RefPtr<Font> createFont(const FontDescription& description, bool syntheticBold, bool syntheticItalic, const FontCreationContext& fontCreationContext) final
{
return protectedCachedFont()->createFont(description, syntheticBold, syntheticItalic, fontCreationContext);
}
void setClient(FontLoadRequestClient* client) final
{
WeakPtr oldClient = m_fontLoadRequestClient;
m_fontLoadRequestClient = client;
if (!client && oldClient)
protectedCachedFont()->removeClient(*this);
else if (client && !oldClient)
protectedCachedFont()->addClient(*this);
}
bool isCachedFontLoadRequest() const final { return true; }
void fontLoaded(CachedFont& font) final
{
if (m_fontLoadedProcessed)
return;
m_fontLoadedProcessed = true;
ASSERT_UNUSED(font, &font == m_font.get());
if (m_fontLoadRequestClient)
m_fontLoadRequestClient->fontLoaded(*this); // fontLoaded() might destroy this object. Don't deref its members after it.
}
CachedResourceHandle<CachedFont> m_font;
WeakPtr<FontLoadRequestClient> m_fontLoadRequestClient;
WeakPtr<ScriptExecutionContext> m_context;
bool m_fontLoadedProcessed { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_FONTLOADREQUEST(WebCore::CachedFontLoadRequest, isCachedFontLoadRequest())
|
