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-rw-r--r--chrome/common/mac/attributed_string_coder.h119
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diff --git a/chrome/common/mac/attributed_string_coder.h b/chrome/common/mac/attributed_string_coder.h
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--- a/chrome/common/mac/attributed_string_coder.h
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-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_COMMON_MAC_ATTRIBUTED_STRING_CODER_H_
-#define CHROME_COMMON_MAC_ATTRIBUTED_STRING_CODER_H_
-#pragma once
-
-#include <set>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
-#include "content/common/font_descriptor_mac.h"
-#include "ipc/ipc_message_utils.h"
-#include "ui/base/range/range.h"
-
-#if __OBJC__
-@class NSAttributedString;
-@class NSDictionary;
-#else
-class NSAttributedString;
-class NSDictionary;
-#endif
-
-namespace mac {
-
-// This class will serialize the font information of an NSAttributedString so
-// that it can be sent over IPC. This class only stores the information of the
-// NSFontAttributeName. The motive is that of security: using NSArchiver and
-// friends to send objects from the renderer to the browser could lead to
-// deserialization of arbitrary objects. This class restricts serialization to
-// a specific object class and specific attributes of that object.
-class AttributedStringCoder {
- public:
- // A C++ IPC-friendly representation of the NSFontAttributeName attribute
- // set.
- class FontAttribute {
- public:
- FontAttribute(NSDictionary* ns_attributes, ui::Range effective_range);
- FontAttribute(FontDescriptor font, ui::Range range);
- FontAttribute();
- ~FontAttribute();
-
- // Creates an autoreleased NSDictionary that can be attached to an
- // NSAttributedString.
- NSDictionary* ToAttributesDictionary() const;
-
- // Whether or not the attribute should be placed in the EncodedString. This
- // can return false, e.g. if the Cocoa-based constructor can't find any
- // information to encode.
- bool ShouldEncode() const;
-
- // Accessors:
- FontDescriptor font_descriptor() const { return font_descriptor_; }
- ui::Range effective_range() const { return effective_range_; }
-
- private:
- FontDescriptor font_descriptor_;
- ui::Range effective_range_;
- };
-
- // A class that contains the pertinent information from an NSAttributedString,
- // which can be serialized over IPC.
- class EncodedString {
- public:
- explicit EncodedString(string16 string);
- EncodedString();
- ~EncodedString();
-
- // Accessors:
- string16 string() const { return string_; }
- const std::vector<FontAttribute>& attributes() const {
- return attributes_;
- }
- std::vector<FontAttribute>* attributes() { return &attributes_; }
-
- private:
- // The plain-text string.
- string16 string_;
- // The set of attributes that style |string_|.
- std::vector<FontAttribute> attributes_;
- };
-
- // Takes an NSAttributedString, extracts the pertinent attributes, and returns
- // an object that represents it. Caller owns the result.
- static const EncodedString* Encode(NSAttributedString* str);
-
- // Returns an autoreleased NSAttributedString from an encoded representation.
- static NSAttributedString* Decode(const EncodedString* str);
-
- private:
- AttributedStringCoder();
-};
-
-} // namespace mac
-
-// IPC ParamTraits specialization //////////////////////////////////////////////
-
-namespace IPC {
-
-template <>
-struct ParamTraits<mac::AttributedStringCoder::EncodedString> {
- typedef mac::AttributedStringCoder::EncodedString param_type;
- static void Write(Message* m, const param_type& p);
- static bool Read(const Message* m, void** iter, param_type* r);
- static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<mac::AttributedStringCoder::FontAttribute> {
- typedef mac::AttributedStringCoder::FontAttribute param_type;
- static void Write(Message* m, const param_type& p);
- static bool Read(const Message* m, void** iter, param_type* r);
- static void Log(const param_type& p, std::string* l);
-};
-
-} // namespace IPC
-
-#endif // CHROME_COMMON_MAC_ATTRIBUTED_STRING_CODER_H_