2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995-2001 the LyX Team.
9 * ====================================================== */
21 #include "commandtags.h"
38 /** This is not quite the correct place for this enum. I think
39 the correct would be to let each subclass of Inset declare
40 its own enum code. Actually the notion of an Inset::Code
41 should be avoided, but I am not sure how this could be done
47 TOC_CODE, // do these insets really need a code? (ale)
93 SPECIALCHAR_CODE, // 25
103 MATHMACRO_CODE, // 30
117 TEXT_TO_INSET_OFFSET = 2
131 Inset() : top_x(0), top_baseline(0), scx(0), id_(inset_id++), owner_(0) {}
132 /// Virtual base destructor
135 virtual int ascent(BufferView *, LyXFont const &) const = 0;
137 virtual int descent(BufferView *, LyXFont const &) const = 0;
139 virtual int width(BufferView *, LyXFont const &) const = 0;
141 virtual void draw(BufferView *, LyXFont const &,
142 int baseline, float & x, bool cleared) const = 0;
143 /// update the inset representation
144 virtual void update(BufferView *, LyXFont const &, bool = false)
147 virtual LyXFont const convertFont(LyXFont const & font) const;
148 /// what appears in the minibuffer when opening
149 virtual string const editMessage() const;
151 virtual void edit(BufferView *, int x, int y, unsigned int button);
153 virtual void edit(BufferView *, bool front = true);
155 virtual EDITABLE editable() const;
156 /// This is called when the user clicks inside an inset
157 virtual void insetButtonPress(BufferView *, int, int, int) {}
158 /// This is called when the user releases the button inside an inset
159 virtual void insetButtonRelease(BufferView *, int, int, int) {}
160 /// This is called when the user moves the mouse inside an inset
161 virtual void insetMotionNotify(BufferView *, int , int , int) {}
163 virtual bool isTextInset() const { return false; }
165 virtual bool doClearArea() const { return true; }
167 virtual bool autoDelete() const;
168 /// returns true the inset can hold an inset of given type
169 virtual bool insetAllowed(Inset::Code) const { return false; }
170 /// wrapper around the above
171 bool insetAllowed(Inset * in) const {
172 return insetAllowed(in->lyxCode());
175 virtual void write(Buffer const *, std::ostream &) const = 0;
177 virtual void read(Buffer const *, LyXLex & lex) = 0;
178 /** returns the number of rows (\n's) of generated tex code.
179 fragile == true means, that the inset should take care about
180 fragile commands by adding a \protect before.
181 If the free_spc (freespacing) variable is set, then this inset
182 is in a free-spacing paragraph.
184 virtual int latex(Buffer const *, std::ostream &, bool fragile,
185 bool free_spc) const = 0;
187 virtual int ascii(Buffer const *,
188 std::ostream &, int linelen = 0) const = 0;
190 virtual int linuxdoc(Buffer const *, std::ostream &) const = 0;
192 virtual int docBook(Buffer const *, std::ostream &) const = 0;
193 /// Updates needed features for this inset.
194 virtual void validate(LaTeXFeatures & features) const;
196 virtual bool deletable() const;
198 /// returns LyX code associated with the inset. Used for TOC, ...)
199 virtual Inset::Code lyxCode() const { return NO_CODE; }
201 virtual std::vector<string> const getLabelList() const {
202 return std::vector<string>();
206 virtual Inset * clone(Buffer const &, bool same_ids = false) const = 0;
208 /// returns true to override begin and end inset in file
209 virtual bool directWrite() const;
211 /// Returns true if the inset should be centered alone
212 virtual bool display() const { return false; }
213 /// Changes the display state of the inset
214 virtual void display(bool) {}
216 /// returns true if this inset needs a row on it's own
218 virtual bool needFullRow() const { return false; }
220 void setInsetName(string const & s) { name = s; }
222 string const getInsetName() const { return name; }
224 void setOwner(Inset * inset) { owner_ = inset; }
226 Inset * owner() const { return owner_; }
228 int x() const { return top_x; }
230 int y() const { return top_baseline; }
232 // because we could have fake text insets and have to call this
233 // inside them without cast!!!
235 virtual LyXText * getLyXText(BufferView const *,
236 bool const recursive = false) const;
238 virtual void deleteLyXText(BufferView *, bool = true) const {}
240 virtual void resizeLyXText(BufferView *, bool /*force*/= false) const {}
241 /// returns the actuall scroll-value
242 virtual int scroll(bool recursive=true) const {
243 if (!recursive || !owner_)
247 /// try to get a paragraph pointer from it's id if we have a
248 /// paragraph to give back!
249 virtual Paragraph * getParFromID(int /* id */) const {
252 /// try to get a inset pointer from it's id if we have
253 /// an inset to give back!
254 virtual Inset * getInsetFromID(int /* id */) const {
257 /// if this insets owns paragraphs (f.ex. InsetText) then it
258 /// should return it's very first one!
259 virtual Paragraph * firstParagraph() const {
262 /// return the cursor if we own one otherwise giv'em just the
263 /// BufferView cursor to work with.
264 virtual LyXCursor const & cursor(BufferView * bview) const;
269 /// used to toggle insets
270 // is the inset open?
271 virtual bool isOpen() const { return false; }
272 // open or close the inset, depending on the bool
273 virtual void open(BufferView *, bool) {}
278 mutable int top_baseline;
284 static unsigned int inset_id;
294 // Updatable Insets. These insets can be locked and receive
295 // directly user interaction. Currently used only for mathed.
296 // Note that all pure methods from Inset class are pure here too.
297 // [Alejandro 080596]
299 /** Extracted from Matthias notes:
301 * An inset can simple call LockInset in it's edit call and *ONLY*
304 * Unlocking is either done by LyX or the inset itself with a
307 * During the lock, all button and keyboard events will be modified
308 * and send to the inset through the following inset-features. Note that
309 * Inset::insetUnlock will be called from inside UnlockInset. It is meant
310 * to contain the code for restoring the menus and things like this.
312 * If a inset wishes any redraw and/or update it just has to call
315 * It's is completly irrelevant, where the inset is. UpdateInset will
316 * find it in any paragraph in any buffer.
317 * Of course the_locking_inset and the insets in the current paragraph/buffer
318 * are checked first, so no performance problem should occur.
320 class UpdatableInset : public Inset {
322 /** Dispatch result codes
323 Now that nested updatable insets are allowed, the local dispatch
324 becomes a bit complex, just two possible results (boolean)
327 DISPATCHED = the inset catched the action
328 DISPATCHED_NOUPDATE = the inset catched the action and no update
329 is needed here to redraw the inset
330 FINISHED = the inset must be unlocked as a result
332 UNDISPATCHED = the action was not catched, it should be
333 dispatched by lower level insets
342 /// To convert old binary dispatch results
343 RESULT DISPATCH_RESULT(bool b) {
344 return b ? DISPATCHED : FINISHED;
348 UpdatableInset() : cursor_visible_(false), block_drawing_(false) {}
351 virtual EDITABLE editable() const;
353 /// may call ToggleLockedInsetCursor
354 virtual void toggleInsetCursor(BufferView *);
356 virtual void showInsetCursor(BufferView *, bool show = true);
358 virtual void hideInsetCursor(BufferView *);
360 virtual void fitInsetCursor(BufferView *) const;
362 virtual void getCursorPos(BufferView *, int &, int &) const {}
364 virtual void insetButtonPress(BufferView *, int x, int y, int button);
366 virtual void insetButtonRelease(BufferView *,
367 int x, int y, int button);
369 virtual void insetKeyPress(XKeyEvent * ev);
371 virtual void insetMotionNotify(BufferView *, int x, int y, int state);
373 virtual void insetUnlock(BufferView *);
375 virtual void edit(BufferView *, int x, int y, unsigned int button);
377 virtual void edit(BufferView *, bool front = true);
379 virtual void draw(BufferView *, LyXFont const &,
380 int baseline, float & x, bool cleared) const;
382 virtual void setFont(BufferView *, LyXFont const &,
383 bool toggleall = false, bool selectall = false);
385 virtual bool insertInset(BufferView *, Inset *) { return false; }
387 virtual UpdatableInset * getLockingInset() const {
388 return const_cast<UpdatableInset *>(this);
391 virtual UpdatableInset * getFirstLockingInsetOfType(Inset::Code c)
392 { return (c == lyxCode()) ? this : 0; }
394 virtual unsigned int insetInInsetY() { return 0; }
396 virtual bool updateInsetInInset(BufferView *, Inset *)
399 virtual bool lockInsetInInset(BufferView *, UpdatableInset *)
402 virtual bool unlockInsetInInset(BufferView *, UpdatableInset *,
405 /// An updatable inset could handle lyx editing commands
406 virtual RESULT localDispatch(BufferView *, kb_action, string const &);
408 bool isCursorVisible() const { return cursor_visible_; }
410 virtual int getMaxWidth(BufferView * bv, UpdatableInset const *) const;
412 int scroll(bool recursive = true) const {
413 // We need this method to not clobber the real method in Inset
414 return Inset::scroll(recursive);
417 virtual bool showInsetDialog(BufferView *) const { return false; }
419 virtual void nodraw(bool b) {
423 virtual bool nodraw() const {
424 return block_drawing_;
427 // needed for spellchecking text
429 virtual string selectNextWord(BufferView *, float & value) const;
430 virtual void selectSelectedWord(BufferView *) { return; }
431 virtual void toggleSelection(BufferView *, bool /*kill_selection*/) {
435 // needed for search/replace functionality
437 virtual bool searchForward(BufferView *, string const &,
438 bool const & = true, bool const & = false);
439 virtual bool searchBackward(BufferView *, string const &,
440 bool const & = true, bool const & = false);
444 void toggleCursorVisible() const {
445 cursor_visible_ = !cursor_visible_;
448 void setCursorVisible(bool b) const {
451 /// scrolls to absolute position in bufferview-workwidth * sx units
452 void scroll(BufferView *, float sx) const;
453 /// scrolls offset pixels
454 void scroll(BufferView *, int offset) const;
458 mutable bool cursor_visible_;