src/frontends/xforms/XMiniBuffer.C

   1 // -*- C++ -*-
   2 /**
   3  * \file XMiniBuffer.C
   4  * Copyright 1995-2002 the LyX Team
   5  * Read the file COPYING
   6  *
   7  * \author Lars
   8  * \author Asger and Juergen
   9  */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "frontends/xforms/DropDown.h"
  18 #include "frontends/xforms/XFormsView.h"
  19 #include "frontends/Timeout.h"
  20
  21 #include "XMiniBuffer.h"
  22 #include "BufferView.h"
  23 #include "LyXAction.h"
  24 #include "gettext.h"
  25 #include "support/lyxalgo.h"
  26 #include "support/lstrings.h"
  27
  28 #include <boost/bind.hpp>
  29
  30 #include <vector>
  31 #include <cctype>
  32
  33 #ifndef CXX_GLOBAL_CSTD
  34 using std::isprint;
  35 #endif
  36
  37 using std::vector;
  38
  39
  40 namespace {
  41
  42 struct prefix {
  43         string p;
  44         prefix(string const & s)
  45                 : p(s) {}
  46         bool operator()(string const & s) const {
  47                 return prefixIs(s, p);
  48         }
  49 };
  50
  51 } // end of anon namespace
  52
  53
  54 XMiniBuffer::XMiniBuffer(LyXView * o, FL_Coord x, FL_Coord y,
  55                          FL_Coord h, FL_Coord w)
  56         : MiniBuffer(o)
  57 {
  58         create_input_box(FL_NORMAL_INPUT, x, y, h, w);
  59         messageMode();
  60 }
  61
  62
  63 // thanks for nothing, xforms (recursive creation not allowed)
  64 void XMiniBuffer::dd_init()
  65 {
  66         dropdown_ = new DropDown(owner_, the_buffer);
  67         dropdown_->result.connect(boost::bind(&XMiniBuffer::set_complete_input, this, _1));
  68         dropdown_->keypress.connect(boost::bind(&XMiniBuffer::append_char, this, _1));
  69 }
  70
  71
  72 XMiniBuffer::~XMiniBuffer()
  73 {
  74         delete dropdown_;
  75 }
  76
  77
  78 int XMiniBuffer::peek_event(FL_OBJECT * ob, int event, int key, XEvent * xev)
  79 {
  80 #if 0
  81         if (dropdown_->isVisible()) {
  82                 return dropdown_->peek(xev);
  83         }
  84 #endif
  85
  86         switch (event) {
  87         case FL_UNFOCUS:
  88                 messageMode();
  89                 break;
  90         case FL_KEYBOARD:
  91         {
  92                 string input;
  93                 if (information_displayed_) {
  94                         information_timer_->stop();
  95                         input = stored_input;
  96                         restore_input();
  97                 } else {
  98                         char const * tmp = fl_get_input(ob);
  99                         input = tmp ? tmp : "";
 100                 }
 101
 102
 103                 switch (key) {
 104                 case XK_Down:
 105                         if (hist_iter != history_->end()) {
 106                                 ++hist_iter;
 107                         }
 108                         if (hist_iter == history_->end()) {
 109                                 // no further history
 110                                 show_information(_("[End of history]"), input);
 111                         } else {
 112                                 set_input((*hist_iter));
 113                         }
 114                         return 1;
 115                 case XK_Up:
 116                         if (hist_iter == history_->begin()) {
 117                                 // no further history
 118                                 show_information(_("[Beginning of history]"),
 119                                                  input);
 120                         } else {
 121                                 --hist_iter;
 122                                 set_input((*hist_iter));
 123                         }
 124                         return 1;
 125                 case 9:
 126                 case XK_Tab:
 127                 {
 128                         // Completion handling.
 129
 130                         vector<string> comp;
 131                         lyx::copy_if(completion_.begin(),
 132                                      completion_.end(),
 133                                      back_inserter(comp), prefix(input));
 134
 135                         if (comp.empty()) {
 136                                 // No matches
 137                                 string const tmp = input + _(" [no match]");
 138                                 show_information(tmp, input);
 139                         } else if (comp.size() == 1) {
 140                                 // Perfect match
 141                                 string const tmp =
 142                                         comp[0] + _(" [sole completion]");
 143                                 show_information(tmp, comp[0] + " ");
 144                         } else {
 145                                 // More that one match
 146                                 // Find maximal avaliable prefix
 147                                 string const tmp = comp[0];
 148                                 string test(input);
 149                                 if (tmp.length() > test.length())
 150                                         test += tmp[test.length()];
 151                                 while (test.length() < tmp.length()) {
 152                                         vector<string> vtmp;
 153                                         lyx::copy_if(comp.begin(),
 154                                                      comp.end(),
 155                                                      back_inserter(vtmp),
 156                                                      prefix(test));
 157                                         if (vtmp.size() != comp.size()) {
 158                                                 test.erase(test.length() - 1);
 159                                                 break;
 160                                         }
 161                                         test += tmp[test.length()];
 162                                 }
 163                                 set_input(test);
 164
 165                                 int x,y,w,h;
 166                                 fl_get_wingeometry(fl_get_real_object_window(the_buffer),
 167                                                    &x, &y, &w, &h);
 168
 169                                 // asynchronous completion
 170                                 int const air = the_buffer->x;
 171                                 x += air;
 172                                 y += h - (the_buffer->h + air);
 173                                 w = the_buffer->w;
 174                                 dropdown_->select(comp, x, y, w);
 175                         }
 176                         return 1;
 177                 }
 178                 case 27:
 179                 case XK_Escape:
 180                         // Abort
 181 #if 0
 182                         owner_->view()->focus(true);
 183 #endif
 184                         message_timeout();
 185                         messageMode();
 186                         //escape.emit();
 187                         return 1;
 188                 case 13:
 189                 case XK_Return:
 190                 {
 191 #if 0
 192                         // This will go in again in a little while
 193                         // we need to be able to declare what types
 194                         // of argumetns LFUN's should have first. (Lgb)
 195                         // First check for match
 196                         vector<string>::const_iterator cit =
 197                                 find(completion_.begin(),
 198                                      completion_.end(),
 199                                      input);
 200                         if (cit == completion_.end()) {
 201                                 // no such func/item
 202                                 string const tmp = input + _(" [no match]");
 203                                 show_information(tmp, input);
 204                         } else {
 205 #endif
 206                                 // Return the inputted string
 207                                 messageMode();
 208 #if 0
 209                                 owner_->view()->focus(true);
 210 #endif
 211                                 if (!input.empty()) {
 212                                         history_->push_back(input);
 213                                 }
 214                                 inputReady(input);
 215 # if 0
 216                         }
 217 #endif
 218                         return 1;
 219                 }
 220                 default:
 221                         return 0;
 222                 }
 223         }
 224         default:
 225                 //lyxerr << "Unhandled minibuffer event!" << endl;
 226                 break;
 227         }
 228
 229         return 0;
 230 }
 231
 232
 233 extern "C" {
 234
 235         static
 236         int C_XMiniBuffer_peek_event(FL_OBJECT * ob, int event,
 237                                      FL_Coord, FL_Coord,
 238                                      int key, void * xev)
 239         {
 240                 XMiniBuffer * mini = static_cast<XMiniBuffer*>(ob->u_vdata);
 241                 return mini->peek_event(ob, event, key,
 242                                         static_cast<XEvent *>(xev));
 243         }
 244
 245 }
 246
 247
 248 FL_OBJECT * XMiniBuffer::create_input_box(int type, FL_Coord x, FL_Coord y,
 249                                           FL_Coord w, FL_Coord h)
 250 {
 251         FL_OBJECT * obj;
 252
 253         the_buffer = obj = fl_add_input(type, x, y, w, h, text.c_str());
 254         fl_set_object_boxtype(obj, FL_DOWN_BOX);
 255         fl_set_object_resize(obj, FL_RESIZE_ALL);
 256         fl_set_object_gravity(obj, SouthWestGravity, SouthEastGravity);
 257         fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 258         fl_set_object_lsize(obj, FL_NORMAL_SIZE);
 259
 260         // To intercept Up, Down, Table for history
 261         fl_set_object_prehandler(obj, C_XMiniBuffer_peek_event);
 262         obj->u_vdata = this;
 263         obj->wantkey = FL_KEY_TAB;
 264
 265         set_input(text);
 266
 267         return obj;
 268 }
 269
 270
 271 bool XMiniBuffer::isEditingMode() const
 272 {
 273         return the_buffer->focus;
 274 }
 275
 276
 277 void XMiniBuffer::editingMode()
 278 {
 279         fl_activate_object(the_buffer);
 280         fl_set_focus_object(static_cast<XFormsView *>(owner_)->getForm(),
 281                             the_buffer);
 282         redraw();
 283 }
 284
 285
 286 void XMiniBuffer::messageMode()
 287 {
 288         fl_deactivate_object(the_buffer);
 289         redraw();
 290 }
 291
 292
 293 void XMiniBuffer::redraw()
 294 {
 295         fl_redraw_object(the_buffer);
 296         XFlush(fl_display);
 297 }
 298
 299
 300 void XMiniBuffer::append_char(char c)
 301 {
 302         if (!c || !isprint(c))
 303                 return;
 304
 305         char const * tmp = fl_get_input(the_buffer);
 306         string str = tmp ? tmp : "";
 307
 308         str += c;
 309
 310         fl_set_input(the_buffer, str.c_str());
 311 }
 312
 313
 314 void XMiniBuffer::set_input(string const & str)
 315 {
 316         fl_set_input(the_buffer, str.c_str());
 317 }