[1505] | 1 | /* |
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| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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| 3 | * > www.orxonox.net < |
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| 4 | * |
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| 5 | * |
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| 6 | * License notice: |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Public License |
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| 10 | * as published by the Free Software Foundation; either version 2 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with this program; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 21 | * |
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| 22 | * Author: |
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| 23 | * Fabian 'x3n' Landau |
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| 24 | * Co-authors: |
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[6105] | 25 | * Reto Grieder |
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[1505] | 26 | * |
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| 27 | */ |
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| 28 | |
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[7401] | 29 | /** |
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| 30 | @defgroup ShellConsole Shell and console |
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| 31 | @ingroup Command |
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| 32 | */ |
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| 33 | |
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| 34 | /** |
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| 35 | @file |
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| 36 | @ingroup Command ShellConsole |
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| 37 | @brief Declaration of the Shell and ShellListener classes. |
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| 38 | */ |
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| 39 | |
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[1505] | 40 | #ifndef _Shell_H__ |
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| 41 | #define _Shell_H__ |
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| 42 | |
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[7203] | 43 | #include "core/CorePrereqs.h" |
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[1792] | 44 | |
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[1505] | 45 | #include <list> |
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[6105] | 46 | #include <sstream> |
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[3196] | 47 | #include <string> |
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[1505] | 48 | #include <vector> |
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| 49 | |
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[6105] | 50 | #include "util/OutputHandler.h" |
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[7203] | 51 | #include "core/OrxonoxClass.h" |
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| 52 | #include "core/input/InputBuffer.h" |
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[1505] | 53 | |
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| 54 | namespace orxonox |
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| 55 | { |
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[7401] | 56 | /** |
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| 57 | @brief An interface, used to get a notification if the state of the Shell changes. |
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| 58 | */ |
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[1505] | 59 | class _CoreExport ShellListener |
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| 60 | { |
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| 61 | friend class Shell; |
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| 62 | |
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| 63 | public: |
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| 64 | virtual ~ShellListener() {} |
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| 65 | |
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| 66 | private: |
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[7401] | 67 | virtual void linesChanged() {} ///< Called if all output-lines have changed |
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| 68 | virtual void onlyLastLineChanged() {} ///< Called if only the last output-line has changed |
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| 69 | virtual void lineAdded() {} ///< Called if a new line was added to the output |
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| 70 | virtual void inputChanged() {} ///< Called if the input has changed |
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| 71 | virtual void cursorChanged() {} ///< Called if the cursor in the input line has changed |
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| 72 | virtual void executed() {} ///< Called if a command from the input line was executed |
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| 73 | virtual void exit() {} ///< Called if the console should be closed |
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[1505] | 74 | }; |
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| 75 | |
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[6105] | 76 | |
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[7401] | 77 | /** |
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| 78 | @brief The Shell is the logical component of the console that displays output to the user and allows him to enter commands. |
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| 79 | |
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| 80 | The Shell gathers output sent from OutputHandler by inheriting from OutputListener. |
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| 81 | The output-lines are stored in the shell, so they can be displayed in a graphical |
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| 82 | console. Additionally the Shell has an InputBuffer which is needed by the user to |
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| 83 | enter commands. |
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| 84 | |
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| 85 | Different graphical consoles build upon a Shell, for example InGameConsole and IOConsole. |
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| 86 | */ |
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[6105] | 87 | class _CoreExport Shell : virtual public OrxonoxClass, public OutputListener |
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[1505] | 88 | { |
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| 89 | public: |
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[7401] | 90 | /// Defines the type of a line of text in the Shell - some types depend on the output level, others are of internal use. |
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[6417] | 91 | enum LineType |
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| 92 | { |
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| 93 | None = OutputLevel::None, |
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| 94 | Warning = OutputLevel::Warning, |
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| 95 | Error = OutputLevel::Error, |
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| 96 | Info = OutputLevel::Info, |
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| 97 | Debug = OutputLevel::Debug, |
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| 98 | Verbose = OutputLevel::Verbose, |
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| 99 | Ultra = OutputLevel::Ultra, |
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| 100 | Input, |
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| 101 | Command, |
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| 102 | Hint |
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| 103 | }; |
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| 104 | |
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| 105 | Shell(const std::string& consoleName, bool bScrollable); |
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[6105] | 106 | ~Shell(); |
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[1505] | 107 | |
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[6105] | 108 | void setConfigValues(); |
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[1747] | 109 | void commandHistoryOffsetChanged(); |
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| 110 | void commandHistoryLengthChanged(); |
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[1505] | 111 | |
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| 112 | void registerListener(ShellListener* listener); |
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| 113 | void unregisterListener(ShellListener* listener); |
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| 114 | |
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[7401] | 115 | /// Returns the input buffer which is needed by the user to enter text into the shell. |
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[1755] | 116 | inline InputBuffer* getInputBuffer() |
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| 117 | { return this->inputBuffer_; } |
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[1505] | 118 | |
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| 119 | void setCursorPosition(unsigned int cursor); |
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[7401] | 120 | /// Returns the current position of the cursor in the input buffer. |
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[1505] | 121 | inline unsigned int getCursorPosition() const |
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| 122 | { return this->inputBuffer_->getCursorPosition(); } |
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| 123 | |
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[7401] | 124 | /// Returns the current content of the input buffer (the text which was entered by the user) |
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[6417] | 125 | inline const std::string& getInput() const |
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[1505] | 126 | { return this->inputBuffer_->get(); } |
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| 127 | |
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[6417] | 128 | typedef std::list<std::pair<std::string, LineType> > LineList; |
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| 129 | LineList::const_iterator getNewestLineIterator() const; |
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| 130 | LineList::const_iterator getEndIterator() const; |
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[1505] | 131 | |
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[6417] | 132 | void addOutput(const std::string& text, LineType type = None); |
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[6105] | 133 | void clearOutput(); |
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[1505] | 134 | |
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[7401] | 135 | /// Returns the number of output-lines that are displayed in the shell. |
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[1505] | 136 | inline unsigned int getNumLines() const |
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[6105] | 137 | { return this->outputLines_.size(); } |
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[7401] | 138 | /// Returns the line which is currently viewed if the user scrolls through the older output-lines in the shell. |
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[1505] | 139 | inline unsigned int getScrollPosition() const |
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| 140 | { return this->scrollPosition_; } |
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| 141 | |
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[7401] | 142 | /// Returns the cache size that is actually used in CommandExecutor, but placed here for better readability of the config file. |
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[7229] | 143 | static inline unsigned int getCacheSize() |
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| 144 | { return Shell::cacheSize_s; } |
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| 145 | |
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[1505] | 146 | private: |
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| 147 | Shell(const Shell& other); |
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| 148 | |
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| 149 | void addToHistory(const std::string& command); |
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[6417] | 150 | const std::string& getFromHistory() const; |
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[6105] | 151 | void clearInput(); |
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| 152 | // OutputListener |
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| 153 | void outputChanged(int level); |
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[1505] | 154 | |
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[6105] | 155 | void configureInputBuffer(); |
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| 156 | |
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| 157 | // InputBuffer callbacks |
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[1505] | 158 | void inputChanged(); |
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| 159 | void execute(); |
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[6105] | 160 | void hintAndComplete(); |
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[1505] | 161 | void backspace(); |
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[6105] | 162 | void deleteChar(); |
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| 163 | void cursorRight(); |
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| 164 | void cursorLeft(); |
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| 165 | void cursorEnd(); |
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| 166 | void cursorHome(); |
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| 167 | void historyUp(); |
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| 168 | void historyDown(); |
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| 169 | void historySearchUp(); |
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| 170 | void historySearchDown(); |
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| 171 | void scrollUp(); |
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| 172 | void scrollDown(); |
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[1505] | 173 | void exit(); |
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| 174 | |
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[7401] | 175 | /// Iterates through all registered @ref ShellListener "shell listeners" and calls the function @a F. |
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[6105] | 176 | template <void (ShellListener::*F)()> |
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| 177 | void updateListeners() |
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| 178 | { |
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| 179 | for (std::list<ShellListener*>::const_iterator it = this->listeners_.begin(); it != this->listeners_.end(); ) |
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| 180 | ((*(it++))->*F)(); |
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| 181 | } |
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| 182 | |
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[7401] | 183 | std::list<ShellListener*> listeners_; ///< The registered shell listeners |
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| 184 | InputBuffer* inputBuffer_; ///< The input buffer that is needed by the user to enter text |
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| 185 | std::stringstream outputBuffer_; ///< The output buffer that is used to retrieve lines of output from OutputListener |
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| 186 | bool bFinishedLastLine_; ///< Stores if the most recent output-line was terminated with a line-break or if more output is expected for this line |
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| 187 | LineList outputLines_; ///< A list of all output-lines that were displayed in the shell so far |
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| 188 | LineList::const_iterator scrollIterator_; ///< An iterator to an entry of the list of output-lines, changes if the user scrolls through the output in the shell |
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| 189 | unsigned int scrollPosition_; ///< The number of the line that is currently being referenced by scrollIterator_ |
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| 190 | unsigned int historyPosition_; ///< If the user scrolls through the history of entered commands (stored in commandHistory_), this contains the currently viewed history entry |
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[1792] | 191 | |
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[7401] | 192 | const std::string consoleName_; ///< The name of this shell - used to define the name of the soft-debug-level config-value |
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| 193 | const bool bScrollable_; ///< If true, the user can scroll through the output-lines |
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[3280] | 194 | |
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[6105] | 195 | // Config values |
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[7401] | 196 | unsigned int maxHistoryLength_; ///< The maximum number of saved commands |
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| 197 | unsigned int historyOffset_; ///< The command history is a circular buffer, this variable defines the current write-offset |
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| 198 | std::vector<std::string> commandHistory_; ///< The history of commands that were entered by the user |
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| 199 | int softDebugLevel_; ///< The maximum level of output that is displayed in the shell (will be passed to OutputListener to filter output) |
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| 200 | static unsigned int cacheSize_s; ///< The maximum cache size of the CommandExecutor - this is stored here for better readability of the config file and because CommandExecutor is no OrxonoxClass |
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[1505] | 201 | }; |
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| 202 | } |
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| 203 | |
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| 204 | #endif /* _Shell_H__ */ |
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