src/minibuffer.C

   1 /* ###########################################################################
   2  *
   3  *                 The MiniBuffer Class
   4  *                 read minibuffer.h for more
   5  *                 information.
   6  *
   7  *           Copyright 1995 Matthias Ettrich
   8  *           Copyright 1995-2001 The LyX Team.
   9  *
  10  * ###########################################################################
  11  */
  12
  13 #include <config.h>
  14
  15 #include <iostream>
  16
  17 #ifdef __GNUG__
  18 #pragma implementation
  19 #endif
  20
  21 // FIXME: temporary
  22 #include "frontends/xforms/DropDown.h"
  23 #include "frontends/xforms/XFormsView.h"
  24
  25 #include "minibuffer.h"
  26
  27 #include "support/lyxalgo.h"
  28 #include "support/filetools.h"
  29 #include "support/lstrings.h"
  30 #include "frontends/LyXView.h"
  31 #include "gettext.h"
  32 #include "LyXAction.h"
  33 #include "BufferView.h"
  34 #include "frontends/Timeout.h"
  35
  36 #include <boost/bind.hpp>
  37
  38 #include <cctype>
  39
  40 #ifndef CXX_GLOBAL_CSTD
  41 using std::isprint;
  42 #endif
  43
  44 using std::vector;
  45 using std::back_inserter;
  46 using std::find;
  47
  48 extern LyXAction lyxaction;
  49
  50
  51 namespace {
  52
  53 struct prefix {
  54         string p;
  55         prefix(string const & s)
  56                 : p(s) {}
  57         bool operator()(string const & s) const {
  58                 return prefixIs(s, p);
  59         }
  60 };
  61
  62 } // end of anon namespace
  63
  64
  65 MiniBuffer::MiniBuffer(LyXView * o, FL_Coord x, FL_Coord y,
  66                        FL_Coord h, FL_Coord w)
  67         : stored_(false), owner_(o), state_(spaces)
  68 {
  69         add(FL_NORMAL_INPUT, x, y, h, w);
  70
  71         timer = new Timeout(6000);
  72         timer->timeout.connect(boost::bind(&MiniBuffer::init, this));
  73
  74         stored_timer = new Timeout(1500);
  75         stored_timer->timeout.connect(boost::bind(&MiniBuffer::stored_slot, this));
  76         deactivate();
  77 }
  78
  79
  80 // thanks for nothing, xforms (recursive creation not allowed)
  81 void MiniBuffer::dd_init()
  82 {
  83         dropdown_ = new DropDown(owner_, the_buffer);
  84         dropdown_->result.connect(boost::bind(&MiniBuffer::set_complete_input, this, _1));
  85         dropdown_->keypress.connect(boost::bind(&MiniBuffer::append_char, this, _1));
  86 }
  87
  88
  89 MiniBuffer::~MiniBuffer()
  90 {
  91         delete timer;
  92         delete stored_timer;
  93         delete dropdown_;
  94 }
  95
  96
  97 void MiniBuffer::stored_slot()
  98 {
  99         if (stored_) {
 100                 stored_ = false;
 101                 set_input(stored_input);
 102         }
 103 }
 104
 105
 106 void MiniBuffer::stored_set(string const & str)
 107 {
 108         stored_input = str;
 109         stored_ = true;
 110         stored_timer->start();
 111 }
 112
 113
 114 int MiniBuffer::peek_event(FL_OBJECT * ob, int event, int key)
 115 {
 116         switch (event) {
 117         case FL_UNFOCUS:
 118                 deactivate();
 119                 break;
 120         case FL_KEYBOARD:
 121         {
 122                 char const * tmp = fl_get_input(ob);
 123                 string input = tmp ? tmp : "";
 124                 if (stored_) {
 125                         stored_timer->stop();
 126                         input = stored_input;
 127                         set_input(input);
 128                         stored_ = false;
 129                 }
 130
 131                 switch (key) {
 132                 case XK_Down:
 133                         if (hist_iter != history_->end()) {
 134                                 ++hist_iter;
 135                         }
 136                         if (hist_iter == history_->end()) {
 137                                 // no further history
 138                                 stored_set(input);
 139                                 set_input(_("[End of history]"));
 140                         } else {
 141                                 set_input((*hist_iter));
 142                         }
 143                         return 1;
 144                 case XK_Up:
 145                         if (hist_iter == history_->begin()) {
 146                                 // no further history
 147                                 stored_set(input);
 148                                 set_input(_("[Beginning of history]"));
 149                         } else {
 150                                 --hist_iter;
 151                                 set_input((*hist_iter));
 152                         }
 153                         return 1;
 154                 case 9:
 155                 case XK_Tab:
 156                 {
 157                         // Completion handling.
 158
 159                         vector<string> comp;
 160                         lyx::copy_if(completion_.begin(),
 161                                      completion_.end(),
 162                                      back_inserter(comp), prefix(input));
 163
 164                         if (comp.empty()) {
 165                                 // No matches
 166                                 string const tmp = input + _(" [no match]");
 167                                 stored_set(input);
 168                                 set_input(tmp);
 169                         } else if (comp.size() == 1) {
 170                                 // Perfect match
 171                                 string const tmp =
 172                                         comp[0] + _(" [sole completion]");
 173                                 stored_set(comp[0] + " ");
 174                                 set_input(tmp);
 175                         } else {
 176                                 // More that one match
 177                                 // Find maximal avaliable prefix
 178                                 string const tmp = comp[0];
 179                                 string test(input);
 180                                 if (tmp.length() > test.length())
 181                                         test += tmp[test.length()];
 182                                 while (test.length() < tmp.length()) {
 183                                         vector<string> vtmp;
 184                                         lyx::copy_if(comp.begin(),
 185                                                      comp.end(),
 186                                                      back_inserter(vtmp),
 187                                                      prefix(test));
 188                                         if (vtmp.size() != comp.size()) {
 189                                                 test.erase(test.length() - 1);
 190                                                 break;
 191                                         }
 192                                         test += tmp[test.length()];
 193                                 }
 194                                 set_input(test);
 195
 196                                 int x,y,w,h;
 197                                 fl_get_wingeometry(fl_get_real_object_window(the_buffer),
 198                                         &x, &y, &w, &h);
 199
 200                                 // asynchronous completion
 201                                 int const air = the_buffer->x;
 202                                 x += air;
 203                                 y += h - (the_buffer->h + air);
 204                                 w = the_buffer->w;
 205                                 dropdown_->select(comp, x, y, w);
 206                         }
 207                         return 1;
 208                 }
 209                 case 27:
 210                 case XK_Escape:
 211                         // Abort
 212                         owner_->view()->focus(true);
 213                         init();
 214                         deactivate();
 215                         //escape.emit();
 216                         return 1;
 217                 case 13:
 218                 case XK_Return:
 219                 {
 220 #if 0
 221                         // This will go in again in a little while
 222                         // we need to be able to declare what types
 223                         // of argumetns LFUN's should have first. (Lgb)
 224                         // First check for match
 225                         vector<string>::const_iterator cit =
 226                                 find(completion_.begin(),
 227                                           completion_.end(),
 228                                           input);
 229                         if (cit == completion_.end()) {
 230                                 // no such func/item
 231                                 stored_set(input);
 232                                 string const tmp = input + _(" [no match]");
 233                                 set_input(tmp);
 234                         } else {
 235 #endif
 236                                 // Return the inputted string
 237                                 deactivate();
 238                                 owner_->view()->focus(true);
 239                                 if (!input.empty()) {
 240                                         history_->push_back(input);
 241                                 }
 242                                 stringReady(input);
 243 # if 0
 244                         }
 245 #endif
 246                         return 1;
 247                 }
 248                 case XK_space:
 249                 {
 250                         // Depending on the input state spaces might not
 251                         // be allowed.
 252                         switch (state_) {
 253                         case spaces:
 254                                 return 0;
 255                         case nospaces:
 256                         {
 257                                 stored_set(input);
 258                                 string const tmp = input + _(" [no match]");
 259                                 set_input(tmp);
 260                                 return 1;
 261                         }
 262                         }
 263
 264                 }
 265
 266                 default:
 267                         return 0;
 268                 }
 269         }
 270         default:
 271                 //lyxerr << "Unhandled minibuffer event!" << endl;
 272                 break;
 273         }
 274
 275         return 0;
 276 }
 277
 278
 279 extern "C" {
 280
 281         static
 282         int C_MiniBuffer_peek_event(FL_OBJECT * ob, int event,
 283                                     FL_Coord, FL_Coord,
 284                                     int key, void * /*xev*/)
 285         {
 286                 MiniBuffer * mini = static_cast<MiniBuffer*>(ob->u_vdata);
 287                 return mini->peek_event(ob, event, key);
 288         }
 289
 290 }
 291
 292
 293 void MiniBuffer::prepare()
 294 {
 295         text.erase();
 296         set_input("");
 297         activate();
 298         fl_set_focus_object(static_cast<XFormsView *>(owner_)->getForm(),
 299                             the_buffer);
 300 }
 301
 302
 303 FL_OBJECT * MiniBuffer::add(int type, FL_Coord x, FL_Coord y,
 304                            FL_Coord w, FL_Coord h)
 305 {
 306         FL_OBJECT * obj;
 307
 308         the_buffer = obj = fl_add_input(type, x, y, w, h, text.c_str());
 309         fl_set_object_boxtype(obj, FL_DOWN_BOX);
 310         fl_set_object_resize(obj, FL_RESIZE_ALL);
 311         fl_set_object_gravity(obj, SouthWestGravity, SouthEastGravity);
 312         fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 313         fl_set_object_lsize(obj, FL_NORMAL_SIZE);
 314
 315         // To intercept Up, Down, Table for history
 316         fl_set_object_prehandler(obj, C_MiniBuffer_peek_event);
 317         obj->u_vdata = this;
 318         obj->wantkey = FL_KEY_TAB;
 319
 320         set_input(text);
 321
 322         return obj;
 323 }
 324
 325
 326 void MiniBuffer::message(string const & str)
 327 {
 328         timer->restart();
 329         string const ntext = strip(str);
 330         if (!the_buffer->focus) {
 331                 set_input(ntext);
 332                 text = ntext;
 333         }
 334 }
 335
 336
 337 void MiniBuffer::messagePush(string const & str)
 338 {
 339         text_stored = text;
 340         message(str);
 341 }
 342
 343
 344 void MiniBuffer::messagePop()
 345 {
 346         if (!text_stored.empty()) {
 347                 message(text_stored);
 348                 text_stored.erase();
 349         }
 350 }
 351
 352
 353 void MiniBuffer::addSet(string const & s1, string const & s2)
 354 {
 355         string const str = text + ' ' +  s1 + ' ' + s2;
 356         message(str);
 357 }
 358
 359
 360 void MiniBuffer::getString(State spaces,
 361                            vector<string> const & completion,
 362                            vector<string> & history)
 363 {
 364         state_ = spaces;
 365         completion_ = completion;
 366         history_ = &history;
 367         hist_iter = history_->end();
 368         prepare();
 369 }
 370
 371
 372 void MiniBuffer::init()
 373 {
 374         // If we have focus, we don't want to change anything.
 375         if (the_buffer->focus)
 376                 return;
 377
 378         timeout();
 379         timer->stop();
 380 }
 381
 382
 383 void MiniBuffer::activate()
 384 {
 385         fl_activate_object(the_buffer);
 386         redraw();
 387 }
 388
 389
 390 void MiniBuffer::deactivate()
 391 {
 392         redraw();
 393         fl_deactivate_object(the_buffer);
 394         XFlush(fl_display);
 395 }
 396
 397
 398 void MiniBuffer::redraw()
 399 {
 400         fl_redraw_object(the_buffer);
 401         XFlush(fl_display);
 402 }
 403
 404
 405 void MiniBuffer::set_complete_input(string const & str)
 406 {
 407         if (!str.empty()) {
 408                 // add a space so the user can type
 409                 // an argument immediately
 410                 set_input(str + " ");
 411         }
 412 }
 413
 414
 415 void MiniBuffer::append_char(char c)
 416 {
 417         if (!c || !isprint(c))
 418                 return;
 419
 420         char const * tmp = fl_get_input(the_buffer);
 421         string str = tmp ? tmp : "";
 422
 423         str += c;
 424
 425         fl_set_input(the_buffer, str.c_str());
 426 }
 427
 428
 429 void MiniBuffer::set_input(string const & str)
 430 {
 431         fl_set_input(the_buffer, str.c_str());
 432         XFlush(fl_display);
 433 }