3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include "irrlichttypes.h"
27 #include "util/enriched_string.h"
28 #include "util/Optional.h"
31 // Chat console related classes
37 // name of sending player, or empty if sent by server
42 ChatLine(const std::wstring &a_name, const std::wstring &a_text):
48 ChatLine(const EnrichedString &a_name, const EnrichedString &a_text):
55 struct ChatFormattedFragment
61 // web link is empty for most frags
67 struct ChatFormattedLine
69 // Array of text fragments
70 std::vector<ChatFormattedFragment> fragments;
71 // true if first line of one formatted ChatLine
78 ChatBuffer(u32 scrollback);
79 ~ChatBuffer() = default;
82 // Removes oldest chat line if scrollback size is reached
83 void addLine(const std::wstring &name, const std::wstring &text);
85 // Remove all chat lines
88 // Get number of lines currently in buffer.
89 u32 getLineCount() const;
90 // Get reference to i-th chat line.
91 const ChatLine& getLine(u32 index) const;
93 // Increase each chat line's age by dtime.
95 // Delete oldest N chat lines.
96 void deleteOldest(u32 count);
97 // Delete lines older than maxAge.
98 void deleteByAge(f32 maxAge);
100 // Get number of rows, 0 if reformat has not been called yet.
102 // Update console size and reformat all formatted lines.
103 void reformat(u32 cols, u32 rows);
104 // Get formatted line for a given row (0 is top of screen).
105 // Only valid after reformat has been called at least once
106 const ChatFormattedLine& getFormattedLine(u32 row) const;
107 // Scrolling in formatted buffer (relative)
108 // positive rows == scroll up, negative rows == scroll down
109 void scroll(s32 rows);
110 // Scrolling in formatted buffer (absolute)
111 void scrollAbsolute(s32 scroll);
112 // Scroll to bottom of buffer (newest)
115 // Functions for keeping track of whether the lines were modified by any
116 // preceding operations
117 // If they were not changed, getLineCount() and getLine() output the same as
119 bool getLinesModified() const { return m_lines_modified; }
120 void resetLinesModified() { m_lines_modified = false; }
122 // Format a chat line for the given number of columns.
123 // Appends the formatted lines to the destination array and
124 // returns the number of formatted lines.
125 u32 formatChatLine(const ChatLine& line, u32 cols,
126 std::vector<ChatFormattedLine>& destination) const;
128 void resize(u32 scrollback);
131 s32 getTopScrollPos() const;
132 s32 getBottomScrollPos() const;
137 // Array of unformatted chat lines
138 std::vector<ChatLine> m_unformatted;
140 // Number of character columns in console
142 // Number of character rows in console
144 // Scroll position (console's top line index into m_formatted)
146 // Array of formatted lines
147 std::vector<ChatFormattedLine> m_formatted;
148 // Empty formatted line, for error returns
149 ChatFormattedLine m_empty_formatted_line;
151 // Enable clickable chat weblinks
152 bool m_cache_clickable_chat_weblinks;
153 // Color of clickable chat weblinks
154 irr::video::SColor m_cache_chat_weblink_color;
156 // Whether the lines were modified since last markLinesUnchanged()
157 // Is always set to true when m_unformatted is modified, because that's what
158 // determines the output of getLineCount() and getLine()
159 bool m_lines_modified = true;
165 ChatPrompt(const std::wstring &prompt, u32 history_limit);
166 ~ChatPrompt() = default;
168 // Input character or string
169 void input(wchar_t ch);
170 void input(const std::wstring &str);
172 // Add a string to the history
173 void addToHistory(const std::wstring &line);
176 std::wstring getLine() const { return getLineRef(); }
178 // Get section of line that is currently selected
179 std::wstring getSelection() const { return getLineRef().substr(m_cursor, m_cursor_len); }
181 // Clear the current line
184 // Replace the current line with the given text
185 std::wstring replace(const std::wstring &line);
187 // Select previous command from history
189 // Select next command from history
193 void nickCompletion(const std::list<std::string>& names, bool backwards);
195 // Update console size and reformat the visible portion of the prompt
196 void reformat(u32 cols);
197 // Get visible portion of the prompt.
198 std::wstring getVisiblePortion() const;
199 // Get cursor position (relative to visible portion). -1 if invalid
200 s32 getVisibleCursorPosition() const;
201 // Get length of cursor selection
202 s32 getCursorLength() const { return m_cursor_len; }
211 // Cursor operation direction
217 // Cursor operation scope
219 CURSOROP_SCOPE_CHARACTER,
222 CURSOROP_SCOPE_SELECTION
226 // op specifies whether it's a move or delete operation
227 // dir specifies whether the operation goes left or right
228 // scope specifies how far the operation will reach (char/word/line)
230 // cursorOperation(CURSOROP_MOVE, CURSOROP_DIR_RIGHT, CURSOROP_SCOPE_LINE)
231 // moves the cursor to the end of the line.
232 // cursorOperation(CURSOROP_DELETE, CURSOROP_DIR_LEFT, CURSOROP_SCOPE_WORD)
233 // deletes the word to the left of the cursor.
234 void cursorOperation(CursorOp op, CursorOpDir dir, CursorOpScope scope);
237 const std::wstring &getLineRef() const;
239 std::wstring &makeLineRef();
241 // set m_view to ensure that 0 <= m_view <= m_cursor < m_view + m_cols
242 // if line can be fully shown, set m_view to zero
243 // else, also ensure m_view <= m_line.size() + 1 - m_cols
247 struct HistoryEntry {
249 // If line is edited, saved holds the unedited version.
250 Optional<std::wstring> saved;
252 HistoryEntry(const std::wstring &line): line(line) {}
254 bool operator==(const HistoryEntry &other);
255 bool operator!=(const HistoryEntry &other) { return !(*this == other); }
259 std::wstring m_prompt = L"";
260 // Non-historical edited line
261 std::wstring m_line = L"";
263 std::vector<HistoryEntry> m_history;
264 // History index (0 <= m_history_index <= m_history.size())
265 u32 m_history_index = 0;
266 // Maximum number of history entries
269 // Number of columns excluding columns reserved for the prompt
271 // Start of visible portion (index into m_line)
273 // Cursor (index into m_line)
275 // Cursor length (length of selected portion of line)
276 s32 m_cursor_len = 0;
278 // Last nick completion start (index into m_line)
279 s32 m_nick_completion_start = 0;
280 // Last nick completion start (index into m_line)
281 s32 m_nick_completion_end = 0;
288 ~ChatBackend() = default;
291 void addMessage(const std::wstring &name, std::wstring text);
292 // Parse and add unparsed chat message
293 void addUnparsedMessage(std::wstring line);
295 // Get the console buffer
296 ChatBuffer& getConsoleBuffer();
297 // Get the recent messages buffer
298 ChatBuffer& getRecentBuffer();
299 // Concatenate all recent messages
300 EnrichedString getRecentChat() const;
301 // Get the console prompt
302 ChatPrompt& getPrompt();
304 // Reformat all buffers
305 void reformat(u32 cols, u32 rows);
307 // Clear all recent messages
308 void clearRecentChat();
310 // Age recent messages
311 void step(float dtime);
314 void scroll(s32 rows);
315 void scrollPageDown();
318 // Resize recent buffer based on settings
319 void applySettings();
322 ChatBuffer m_console_buffer;
323 ChatBuffer m_recent_buffer;