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Side by Side Diff: chrome/test/webdriver/webdriver_util.h

Issue 7522024: Refactor chromedriver's script execution to reduce amount of custom Value parsing. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef CHROME_TEST_WEBDRIVER_WEBDRIVER_UTIL_H_
6 #define CHROME_TEST_WEBDRIVER_WEBDRIVER_UTIL_H_
7 #pragma once
8
9 #include <string>
10 #include <vector>
11
12 #include "base/basictypes.h"
13 #include "base/compiler_specific.h"
14 #include "chrome/test/automation/value_conversion_traits.h"
15
16 class FilePath;
17
18 namespace base {
19 class Value;
20 }
21
22 namespace webdriver {
23
24 // Generates a random, 32-character hexidecimal ID.
25 std::string GenerateRandomID();
26
27 // Returns the equivalent JSON string for the given value.
28 std::string JsonStringify(const base::Value* value);
29
30 #if defined(OS_MACOSX)
31 // Gets the paths to the user and local application directory.
32 void GetApplicationDirs(std::vector<FilePath>* app_dirs);
33 #endif
34
35 // Parses a given value.
36 class ValueParser {
37 public:
38 virtual ~ValueParser();
39 virtual bool Parse(base::Value* value) const = 0;
40
41 protected:
42 ValueParser();
43
44 private:
45 DISALLOW_COPY_AND_ASSIGN(ValueParser);
46 };
47
48 // Define a special type and constant that allows users to skip parsing a value.
49 // Useful when wanting to skip parsing for one value out of many in a list.
50 enum SkipParsing { };
51 extern SkipParsing* kSkipParsing;
52
53 // Parses a given value using the |ValueConversionTraits| to the appropriate
54 // type. This assumes that a direct conversion can be performed without
55 // pulling the value out of a dictionary or list.
56 template <typename T>
57 class DirectValueParser : public ValueParser {
58 public:
59 explicit DirectValueParser(T* t) : t_(t) { }
60
61 virtual ~DirectValueParser() { }
62
63 virtual bool Parse(base::Value* value) const OVERRIDE {
64 return ValueConversionTraits<T>::SetFromValue(value, t_);
65 }
66
67 private:
68 T* t_;
69 DISALLOW_COPY_AND_ASSIGN(DirectValueParser);
70 };
71
72 // Convenience function for creating a DirectValueParser.
73 template <typename T>
74 DirectValueParser<T>* CreateDirectValueParser(T* t) {
75 return new DirectValueParser<T>(t);
76 }
77
78 } // namespace webdriver
79
80 // Value conversion traits for SkipParsing, which just return true.
81 template <>
82 struct ValueConversionTraits<webdriver::SkipParsing> {
83 static bool SetFromValue(const base::Value* value,
84 const webdriver::SkipParsing* t);
85 static bool CanConvert(const base::Value* value);
86 };
87
88 #endif // CHROME_TEST_WEBDRIVER_WEBDRIVER_UTIL_H_
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