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1// Copyright (C) 2002-2012 Nikolaus Gebhardt
2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h
4
5#ifndef __I_LOGGER_H_INCLUDED__
6#define __I_LOGGER_H_INCLUDED__
7
8#include "IReferenceCounted.h"
9
10namespace irr
11{
12
13//! Possible log levels.
14//! When used has filter ELL_DEBUG means => log everything and ELL_NONE means => log (nearly) nothing.
15//! When used to print logging information ELL_DEBUG will have lowest priority while ELL_NONE
16//! messages are never filtered and always printed.
17enum ELOG_LEVEL
18{
19 //! Used for printing information helpful in debugging
20 ELL_DEBUG,
21
22 //! Useful information to print. For example hardware infos or something started/stopped.
23 ELL_INFORMATION,
24
25 //! Warnings that something isn't as expected and can cause oddities
26 ELL_WARNING,
27
28 //! Something did go wrong.
29 ELL_ERROR,
30
31 //! Logs with ELL_NONE will never be filtered.
32 //! And used as filter it will remove all logging except ELL_NONE messages.
33 ELL_NONE
34};
35
36
37//! Interface for logging messages, warnings and errors
38class ILogger : public virtual IReferenceCounted
39{
40public:
41
42 //! Destructor
43 virtual ~ILogger() {}
44
45 //! Returns the current set log level.
46 virtual ELOG_LEVEL getLogLevel() const = 0;
47
48 //! Sets a new log level.
49 /** With this value, texts which are sent to the logger are filtered
50 out. For example setting this value to ELL_WARNING, only warnings and
51 errors are printed out. Setting it to ELL_INFORMATION, which is the
52 default setting, warnings, errors and informational texts are printed
53 out.
54 \param ll: new log level filter value. */
55 virtual void setLogLevel(ELOG_LEVEL ll) = 0;
56
57 //! Prints out a text into the log
58 /** \param text: Text to print out.
59 \param ll: Log level of the text. If the text is an error, set
60 it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
61 is just an informational text, set it to ELL_INFORMATION. Texts are
62 filtered with these levels. If you want to be a text displayed,
63 independent on what level filter is set, use ELL_NONE. */
64 virtual void log(const c8* text, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
65
66 //! Prints out a text into the log
67 /** \param text: Text to print out.
68 \param hint: Additional info. This string is added after a " :" to the
69 string.
70 \param ll: Log level of the text. If the text is an error, set
71 it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
72 is just an informational text, set it to ELL_INFORMATION. Texts are
73 filtered with these levels. If you want to be a text displayed,
74 independent on what level filter is set, use ELL_NONE. */
75 virtual void log(const c8* text, const c8* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
76 virtual void log(const c8* text, const wchar_t* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
77
78 //! Prints out a text into the log
79 /** \param text: Text to print out.
80 \param hint: Additional info. This string is added after a " :" to the
81 string.
82 \param ll: Log level of the text. If the text is an error, set
83 it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
84 is just an informational text, set it to ELL_INFORMATION. Texts are
85 filtered with these levels. If you want to be a text displayed,
86 independent on what level filter is set, use ELL_NONE. */
87 virtual void log(const wchar_t* text, const wchar_t* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
88
89 //! Prints out a text into the log
90 /** \param text: Text to print out.
91 \param ll: Log level of the text. If the text is an error, set
92 it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
93 is just an informational text, set it to ELL_INFORMATION. Texts are
94 filtered with these levels. If you want to be a text displayed,
95 independent on what level filter is set, use ELL_NONE. */
96 virtual void log(const wchar_t* text, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
97};
98
99} // end namespace
100
101#endif
102