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