4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
15 #include "dispatchresult.h"
16 #include "dociterator.h"
29 class MathUnknownInset;
33 /// The cursor class describes the position of a cursor within a document.
35 // The public inheritance should go in favour of a suitable data member
36 // (or maybe private inheritance) at some point of time.
37 class LCursor : public DocumentIterator {
40 /// create the cursor of a BufferView
41 explicit LCursor(BufferView & bv);
42 /// dispatch from innermost inset upwards
43 DispatchResult dispatch(FuncRequest const & cmd);
44 /// are we willing to handle this event?
45 bool getStatus(FuncRequest const & cmd, FuncStatus & flag);
47 /// add a new cursor slice
48 void push(InsetBase * inset);
49 /// add a new cursor slice, place cursor on left end
50 void pushLeft(InsetBase * inset);
51 /// pop one level off the cursor
53 /// pop one slice off the cursor stack and go left
55 /// pop one slice off the cursor stack and go right
58 void setCursor(DocumentIterator const & it, bool sel);
64 bool selection() const { return selection_; }
66 bool & selection() { return selection_; }
67 /// did we place the anchor?
68 bool mark() const { return mark_; }
69 /// did we place the anchor?
70 bool & mark() { return mark_; }
73 /// set selection at given position
74 void setSelection(DocumentIterator const & where, size_t n);
76 void clearSelection();
77 /// access start of selection
78 CursorSlice & selBegin();
79 /// access start of selection
80 CursorSlice const & selBegin() const;
81 /// access end of selection
82 CursorSlice & selEnd();
83 /// access end of selection
84 CursorSlice const & selEnd() const;
86 std::string grabSelection();
88 void eraseSelection();
90 std::string grabAndEraseSelection();
91 // other selection methods
98 /// pastes n-th element of cut buffer
99 void selPaste(size_t n);
101 void selHandle(bool selecting);
106 /// clears or deletes selection depending on lyxrc setting
107 void selClearOrDel();
109 std::string selectionAsString(bool label) const;
111 void paste(std::string const & data);
113 std::string currentState();
115 /// auto-correct mode
116 bool autocorrect() const { return autocorrect_; }
117 /// auto-correct mode
118 bool & autocorrect() { return autocorrect_; }
119 /// are we entering a macro name?
120 bool macromode() const { return macromode_; }
121 /// are we entering a macro name?
122 bool & macromode() { return macromode_; }
123 /// returns x,y position
124 void getPos(int & x, int & y) const;
125 /// returns cursor dimension
126 void getDim(int & asc, int & desc) const;
131 /// move one step to the left
133 /// move one step to the right
137 void insert(InsetBase *);
138 /// insert a single char
141 void insert(std::string const & str);
143 /// write acess to target x position of cursor
145 /// return target x position of cursor
146 int x_target() const;
147 /// clear target x position of cursor
150 /// access to selection anchor
151 CursorSlice & anchor();
152 /// access to selection anchor
153 CursorSlice const & anchor() const;
154 /// cache the absolute coordinate from the top inset
156 /// sets anchor to cursor position
158 /// access to owning BufferView
159 BufferView & bv() const;
160 /// get some interesting description of top position
161 void info(std::ostream & os) const;
162 /// are we in math mode (2), text mode (1) or unsure (0)?
166 /// for spellchecking
167 void replaceWord(std::string const & replacestring);
170 /// set dispatch result
171 void dispatched(dispatch_result_t res);
172 /// assume event was not (yet) dispatched
174 /// don't call update() when done
176 /// don't pop cursor to the level where the LFUN was handled
180 friend std::ostream & operator<<(std::ostream & os, LCursor const & cur);
183 /// the anchor position
184 DocumentIterator anchor_;
187 DispatchResult disp_;
193 * The target x position of the cursor. This is used for when
194 * we have text like :
196 * blah blah blah blah| blah blah blah
198 * blah blah blah blah blah blah
200 * When we move onto row 3, we would like to be vertically aligned
201 * with where we were in row 1, despite the fact that row 2 is
205 // do we have a selection?
207 // are we on the way to get one?
213 // math specific stuff that could be promoted to "global" later
215 /// do we allow autocorrection
217 /// are we entering a macro name?
221 ///////////////////////////////////////////////////////////////////
223 // The part below is the non-integrated rest of the original math
224 // cursor. This should be either generalized for texted or moved
225 // back to the math insets.
227 ///////////////////////////////////////////////////////////////////
231 void insert(MathAtom const &);
233 void insert(MathArray const &);
234 /// return false for empty math insets
236 /// return false for empty math insets
238 /// called for LFUN_UP etc
240 /// called for LFUN_DOWN etc
245 void plainInsert(MathAtom const & at);
247 void niceInsert(MathAtom const & at);
249 void niceInsert(std::string const & str);
251 /// in pixels from top of screen
252 void setScreenPos(int x, int y);
253 /// in pixels from left of screen
255 /// return the next enclosing grid inset and the cursor's index in it
256 MathGridInset * enclosingGrid(idx_type & idx) const;
257 /// adjust anchor position after deletions/insertions
258 void adjust(pos_type from, int diff);
260 MathHullInset * formula() const;
261 /// current offset in the top cell
262 /// interpret name a name of a macro
263 void macroModeClose();
264 /// are we currently typing the name of a macro?
265 bool inMacroMode() const;
266 /// get access to the macro we are currently typing
267 MathUnknownInset * activeMacro();
268 /// are we currently typing '#1' or '#2' or...?
269 bool inMacroArgMode() const;
271 /// replace selected stuff with at, placing the former
272 // selection in given cell of atom
273 void handleNest(MathAtom const & at, int cell = 0);
274 /// remove this as soon as LyXFunc::getStatus is "localized"
275 //inline std::string getLastCode() { return "mathnormal"; }
277 bool isInside(InsetBase const *);
283 /// make sure cursor position is valid
285 /// mark current cursor trace for redraw
288 /// returns the normalized anchor of the selection
289 CursorSlice normalAnchor();
291 /// hack for reveal codes
294 /// injects content of a cell into parent
296 /// split font inset etc
297 void handleFont(std::string const & font);
299 /// display a message
300 void message(std::string const & msg) const;
301 /// display an error message
302 void errorMessage(std::string const & msg) const;
304 std::string getPossibleLabel();
306 /// moves position somehow up or down
307 bool goUpDown(bool up);
308 /// moves position closest to (x, y) in given box
309 bool bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh);
310 /// moves position closest to (x, y) in current cell
311 void bruteFind2(int x, int y);
313 /// the name of the macro we are currently inputting
314 std::string macroName();
315 /// where in the curent cell does the macro name start?
317 /// can we enter the inset?
318 bool openable(MathAtom const &) const;
321 #endif // LYXCURSOR_H