1 /* This file is part of
2 * ======================================================
4 * LyX, The Document Processor
6 * Copyright 1995-2001 The LyX Team.
8 * ====================================================== */
12 #include "CutAndPaste.h"
13 #include "BufferView.h"
15 #include "paragraph.h"
16 #include "ParagraphParameters.h"
18 #include "lyxcursor.h"
20 #include "iterators.h"
21 #include "lyxtextclasslist.h"
22 #include "undo_funcs.h"
23 #include "paragraph_funcs.h"
26 #include "insets/inseterror.h"
28 #include "support/BoostFormat.h"
29 #include "support/LAssert.h"
37 using lyx::textclass_type;
39 extern BufferView * current_view;
41 // Jürgen, note that this means that you cannot currently have a list
42 // of selections cut/copied. So IMHO later we should have a
43 // list/vector/deque that we could store
44 // struct selection_item {
46 // LyXTextClassList::size_type textclass;
48 // in and some method of choosing beween them (based on the first few chars
49 // in the selection probably.) This would be a nice feature and quite
50 // easy to implement. (Lgb)
52 // Sure but I just cleaned up this code for now with the same functionality
53 // as before. I also want to add a XClipboard function so that we can copy
54 // text from LyX to some other X-application in the form of ASCII or in the
55 // form of LaTeX (or Docbook depending on the document-class!). Think how nice
56 // it could be to select a math-inset do a "Copy to X-Clipboard as LaTeX" and
57 // then do a middle mouse button click in the application you want and have
58 // the whole formula there in LaTeX-Code. (Jug)
63 ParagraphList paragraphs;
64 textclass_type textclass = 0;
68 PitPosPair CutAndPaste::cutSelection(ParagraphList & pars,
69 ParagraphList::iterator startpit,
70 ParagraphList::iterator endpit,
71 int startpos, int endpos,
72 textclass_type tc, bool doclear)
74 copySelection(startpit, endpit, startpos, endpos, tc);
75 return eraseSelection(pars, startpit, endpit, startpos,
80 PitPosPair CutAndPaste::eraseSelection(ParagraphList & pars,
81 ParagraphList::iterator startpit,
82 ParagraphList::iterator endpit,
83 int startpos, int endpos, bool doclear)
85 if (startpit == pars.end() || (startpos > startpit->size()))
86 return PitPosPair(endpit, endpos);
88 if (endpit == pars.end() || startpit == endpit) {
89 endpos -= startpit->erase(startpos, endpos);
90 return PitPosPair(endpit, endpos);
93 // clear end/begin fragments of the first/last par in selection
94 bool all_erased = true;
96 startpit->erase(startpos, startpit->size());
97 if (startpit->size() != startpos)
100 endpos -= endpit->erase(0, endpos);
104 // Loop through the deleted pars if any, erasing as needed
106 ParagraphList::iterator pit = boost::next(startpit);
108 while (pit != endpit && pit != pars.end()) {
109 ParagraphList::iterator const next = boost::next(pit);
110 // "erase" the contents of the par
111 pit->erase(0, pit->size());
113 // remove the par if it's now empty
120 #if 0 // FIXME: why for cut but not copy ?
121 // the cut selection should begin with standard layout
123 buf->params().clear();
125 buf->layout(textclasslist[buffer->params.textclass].defaultLayoutName());
129 if (boost::next(startpit) == pars.end())
130 return PitPosPair(endpit, endpos);
133 boost::next(startpit)->stripLeadingSpaces();
136 // paste the paragraphs again, if possible
138 (startpit->hasSameLayout(*boost::next(startpit)) ||
139 boost::next(startpit)->empty())) {
140 #warning current_view used here.
141 // should we pass buffer or buffer->params around?
142 Buffer * buffer = current_view->buffer();
143 mergeParagraph(buffer->params, pars, &*startpit);
144 // this because endpar gets deleted here!
149 return PitPosPair(endpit, endpos);
156 struct resetOwnerAndChanges {
157 void operator()(Paragraph & p) {
165 bool CutAndPaste::copySelection(ParagraphList::iterator startpit,
166 ParagraphList::iterator endpit,
167 int start, int end, textclass_type tc)
169 lyx::Assert(&*startpit);
170 lyx::Assert(&*endpit);
171 lyx::Assert(0 <= start && start <= startpit->size());
172 lyx::Assert(0 <= end && end <= endpit->size());
173 lyx::Assert(startpit != endpit || start <= end);
177 // Clone the paragraphs within the selection.
178 ParagraphList::iterator postend = boost::next(endpit);
180 paragraphs.assign(startpit, postend);
181 for_each(paragraphs.begin(), paragraphs.end(), resetOwnerAndChanges());
183 // Cut out the end of the last paragraph.
184 Paragraph & back = paragraphs.back();
185 back.erase(end, back.size());
187 // Cut out the begin of the first paragraph
188 Paragraph & front = paragraphs.front();
189 front.erase(0, start);
195 pair<PitPosPair, ParagraphList::iterator>
196 CutAndPaste::pasteSelection(ParagraphList & pars,
197 ParagraphList::iterator pit, int pos,
200 if (!checkPastePossible())
201 return make_pair(PitPosPair(pit, pos), pit);
203 lyx::Assert (pos <= pit->size());
205 // Make a copy of the simple cut_buffer.
206 ParagraphList simple_cut_clone = paragraphs;
208 // Now remove all out of the buffer which is NOT allowed in the
209 // new environment and set also another font if that is required.
210 ParagraphList::iterator tmpbuf = simple_cut_clone.begin();
211 int depth_delta = pit->params().depth() - tmpbuf->params().depth();
213 // Make sure there is no class difference.
214 #warning current_view used here
215 SwitchLayoutsBetweenClasses(textclass, tc, &*tmpbuf,
216 current_view->buffer()->params);
218 Paragraph::depth_type max_depth = pit->getMaxDepthAfter();
220 for (; tmpbuf != simple_cut_clone.end(); ++tmpbuf) {
221 // If we have a negative jump so that the depth would
222 // go below 0 depth then we have to redo the delta to
223 // this new max depth level so that subsequent
224 // paragraphs are aligned correctly to this paragraph
226 if ((int(tmpbuf->params().depth()) + depth_delta) < 0)
228 // set the right depth so that we are not too deep or shallow.
229 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
230 if (tmpbuf->params().depth() > max_depth)
231 tmpbuf->params().depth(max_depth);
233 // Only set this from the 2nd on as the 2nd depends
234 // for maxDepth still on pit.
235 if (tmpbuf->previous() != pit)
236 max_depth = tmpbuf->getMaxDepthAfter();
238 // Set the inset owner of this paragraph.
239 tmpbuf->setInsetOwner(pit->inInset());
240 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
241 if (tmpbuf->getChar(i) == Paragraph::META_INSET) {
242 if (!pit->insetAllowed(tmpbuf->getInset(i)->lyxCode())) {
246 LyXFont f1 = tmpbuf->getFont(current_view->buffer()->params, i, outerFont(pit, pars));
248 if (!pit->checkInsertChar(f1)) {
250 } else if (f1 != f2) {
251 tmpbuf->setFont(i, f1);
257 // Make the buf exactly the same layout than
258 // the cursor paragraph.
259 simple_cut_clone.begin()->makeSameLayout(*pit);
261 // Find the end of the buffer.
262 // FIXME: change this to end() - 1
263 ParagraphList::iterator lastbuffer = simple_cut_clone.begin();
264 while (boost::next(lastbuffer) != simple_cut_clone.end())
267 bool paste_the_end = false;
269 // Open the paragraph for inserting the buf
271 if (pit->size() > pos || !pit->next()) {
272 breakParagraphConservative(current_view->buffer()->params,
274 paste_the_end = true;
277 // Set the end for redoing later.
278 ParagraphList::iterator endpit = boost::next(boost::next(pit));
281 lastbuffer->next(pit->next());
282 pit->next()->previous(&*lastbuffer);
284 pit->next(&*simple_cut_clone.begin());
285 simple_cut_clone.begin()->previous(&*pit);
287 if (boost::next(pit) == lastbuffer)
290 mergeParagraph(current_view->buffer()->params, pars, pit);
291 // Store the new cursor position.
293 pos = lastbuffer->size();
294 // Maybe some pasting.
295 if (boost::next(lastbuffer) != simple_cut_clone.end() && paste_the_end) {
296 if (boost::next(lastbuffer)->hasSameLayout(*lastbuffer)) {
297 mergeParagraph(current_view->buffer()->params, pars,
299 } else if (!boost::next(lastbuffer)->size()) {
300 boost::next(lastbuffer)->makeSameLayout(*lastbuffer);
301 mergeParagraph(current_view->buffer()->params, pars,
303 } else if (!lastbuffer->size()) {
304 lastbuffer->makeSameLayout(*boost::next(lastbuffer));
305 mergeParagraph(current_view->buffer()->params, pars,
308 boost::next(lastbuffer)->stripLeadingSpaces();
312 // For the time beeing we must do this to avoid deleting the
313 // newly pasted paragraphs.
314 simple_cut_clone.set(0);
317 return make_pair(PitPosPair(pit, pos), endpit);
321 int CutAndPaste::nrOfParagraphs()
323 return paragraphs.size();
327 int CutAndPaste::SwitchLayoutsBetweenClasses(textclass_type c1,
330 BufferParams const & /*bparams*/)
333 if (!par || c1 == c2)
336 LyXTextClass const & tclass1 = textclasslist[c1];
337 LyXTextClass const & tclass2 = textclasslist[c2];
338 ParIterator end = ParIterator();
339 for (ParIterator it = ParIterator(par); it != end; ++it) {
341 string const name = par->layout()->name();
342 bool hasLayout = tclass2.hasLayout(name);
345 par->layout(tclass2[name]);
347 par->layout(tclass2.defaultLayout());
349 if (!hasLayout && name != tclass1.defaultLayoutName()) {
352 boost::format fmt(_("Layout had to be changed from\n"
354 "because of class conversion from\n"
357 % par->layout()->name()
361 string const s = fmt.str();
363 string const s = _("Layout had to be changed from\n")
365 + par->layout()->name()
366 + _("\nbecause of class conversion from\n")
367 + tclass1.name() + _(" to ")
371 InsetError * new_inset = new InsetError(s);
372 LyXText * txt = current_view->getLyXText();
373 LyXCursor cur = txt->cursor;
374 txt->setCursorIntern(par, 0);
375 txt->insertInset(new_inset);
377 txt->setCursorIntern(cur.par(), cur.pos());
385 bool CutAndPaste::checkPastePossible()
387 return !paragraphs.empty();