2 * This file is part of LyX, the document processor.
3 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
8 * Full author contact details are available in file CREDITS
13 #include "CutAndPaste.h"
14 #include "BufferView.h"
16 #include "paragraph.h"
17 #include "ParagraphParameters.h"
19 #include "lyxcursor.h"
20 #include "iterators.h"
21 #include "lyxtextclasslist.h"
22 #include "undo_funcs.h"
24 #include "paragraph_funcs.h"
27 #include "insets/inseterror.h"
29 #include "support/LAssert.h"
30 #include "support/lstrings.h"
31 #include "support/limited_stack.h"
39 using lyx::textclass_type;
41 extern BufferView * current_view;
43 // Jürgen, note that this means that you cannot currently have a list
44 // of selections cut/copied. So IMHO later we should have a
45 // list/vector/deque that we could store
46 // struct selection_item {
47 // ParagraphList copy_pars;
48 // LyXTextClassList::size_type textclass;
50 // in and some method of choosing beween them (based on the first few chars
51 // in the selection probably.) This would be a nice feature and quite
52 // easy to implement. (Lgb)
54 // Sure but I just cleaned up this code for now with the same functionality
55 // as before. I also want to add a XClipboard function so that we can copy
56 // text from LyX to some other X-application in the form of ASCII or in the
57 // form of LaTeX (or Docbook depending on the document-class!). Think how nice
58 // it could be to select a math-inset do a "Copy to X-Clipboard as LaTeX" and
59 // then do a middle mouse button click in the application you want and have
60 // the whole formula there in LaTeX-Code. (Jug)
64 limited_stack<pair<ParagraphList, textclass_type> > cuts(10);
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);
175 ParagraphList paragraphs;
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);
191 cuts.push(make_pair(paragraphs, tc));
197 pair<PitPosPair, ParagraphList::iterator>
198 CutAndPaste::pasteSelection(ParagraphList & pars,
199 ParagraphList::iterator pit, int pos,
202 return pasteSelection(pars, pit, pos, tc, 0);
205 pair<PitPosPair, ParagraphList::iterator>
206 CutAndPaste::pasteSelection(ParagraphList & pars,
207 ParagraphList::iterator pit, int pos,
208 textclass_type tc, size_t cut_index)
210 if (!checkPastePossible())
211 return make_pair(PitPosPair(pit, pos), pit);
213 lyx::Assert (pos <= pit->size());
215 // Make a copy of the CaP paragraphs.
216 ParagraphList simple_cut_clone = cuts[cut_index].first;
217 textclass_type const textclass = cuts[cut_index].second;
219 // Now remove all out of the pars which is NOT allowed in the
220 // new environment and set also another font if that is required.
222 // Make sure there is no class difference.
223 SwitchLayoutsBetweenClasses(textclass, tc, simple_cut_clone);
225 ParagraphList::iterator tmpbuf = simple_cut_clone.begin();
226 int depth_delta = pit->params().depth() - tmpbuf->params().depth();
228 Paragraph::depth_type max_depth = pit->getMaxDepthAfter();
230 for (; tmpbuf != simple_cut_clone.end(); ++tmpbuf) {
231 // If we have a negative jump so that the depth would
232 // go below 0 depth then we have to redo the delta to
233 // this new max depth level so that subsequent
234 // paragraphs are aligned correctly to this paragraph
236 if ((int(tmpbuf->params().depth()) + depth_delta) < 0)
239 // Set the right depth so that we are not too deep or shallow.
240 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
241 if (tmpbuf->params().depth() > max_depth)
242 tmpbuf->params().depth(max_depth);
244 // Only set this from the 2nd on as the 2nd depends
245 // for maxDepth still on pit.
246 if (tmpbuf != simple_cut_clone.begin())
247 max_depth = tmpbuf->getMaxDepthAfter();
249 // Set the inset owner of this paragraph.
250 tmpbuf->setInsetOwner(pit->inInset());
251 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
252 if (tmpbuf->getChar(i) == Paragraph::META_INSET) {
253 if (!pit->insetAllowed(tmpbuf->getInset(i)->lyxCode())) {
257 LyXFont f1 = tmpbuf->getFont(current_view->buffer()->params, i, outerFont(pit, pars));
259 if (!pit->checkInsertChar(f1)) {
261 } else if (f1 != f2) {
262 tmpbuf->setFont(i, f1);
268 // Make the buf exactly the same layout than
269 // the cursor paragraph.
270 simple_cut_clone.begin()->makeSameLayout(*pit);
272 bool paste_the_end = false;
274 // Open the paragraph for inserting the buf
276 if (pit->size() > pos || boost::next(pit) == pars.end()) {
277 breakParagraphConservative(current_view->buffer()->params,
279 paste_the_end = true;
282 // Set the end for redoing later.
283 ParagraphList::iterator endpit = boost::next(boost::next(pit));
287 ParagraphList::iterator past_pit = boost::next(pit);
288 pars.splice(past_pit, simple_cut_clone);
289 ParagraphList::iterator last_paste = boost::prior(past_pit);
291 // If we only inserted one paragraph.
292 if (boost::next(pit) == last_paste)
295 mergeParagraph(current_view->buffer()->params, pars, pit);
297 // Store the new cursor position.
299 pos = last_paste->size();
301 // Maybe some pasting.
302 #warning CHECK! Are we comparing last_paste to the wrong list here? (Lgb)
303 if (boost::next(last_paste) != pars.end() &&
305 if (boost::next(last_paste)->hasSameLayout(*last_paste)) {
306 mergeParagraph(current_view->buffer()->params, pars,
308 } else if (boost::next(last_paste)->empty()) {
309 boost::next(last_paste)->makeSameLayout(*last_paste);
310 mergeParagraph(current_view->buffer()->params, pars,
312 } else if (last_paste->empty()) {
313 last_paste->makeSameLayout(*boost::next(last_paste));
314 mergeParagraph(current_view->buffer()->params, pars,
317 boost::next(last_paste)->stripLeadingSpaces();
320 return make_pair(PitPosPair(pit, pos), endpit);
324 int CutAndPaste::nrOfParagraphs()
326 return cuts.empty() ? 0 : cuts[0].first.size();
330 int CutAndPaste::SwitchLayoutsBetweenClasses(textclass_type c1,
332 ParagraphList & pars)
334 lyx::Assert(!pars.empty());
336 Paragraph * par = &*pars.begin();
342 LyXTextClass const & tclass1 = textclasslist[c1];
343 LyXTextClass const & tclass2 = textclasslist[c2];
344 ParIterator end = ParIterator();
345 for (ParIterator it = ParIterator(par); it != end; ++it) {
347 string const name = par->layout()->name();
348 bool hasLayout = tclass2.hasLayout(name);
351 par->layout(tclass2[name]);
353 par->layout(tclass2.defaultLayout());
355 if (!hasLayout && name != tclass1.defaultLayoutName()) {
357 string const s = bformat(
358 _("Layout had to be changed from\n%1$s to %2$s\n"
359 "because of class conversion from\n%3$s to %4$s"),
360 name, par->layout()->name(), tclass1.name(), tclass2.name());
361 // To warn the user that something had to be done.
362 par->insertInset(0, new InsetError(s));
369 bool CutAndPaste::checkPastePossible()
371 return !cuts.empty() && !cuts[0].first.empty();