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,
  79                             int key, XEvent * /*xev*/)
  80 {
  81 #if 0
  82         if (dropdown_->isVisible()) {
  83                 return dropdown_->peek(xev);
  84         }
  85 #endif
  86
  87         switch (event) {
  88         case FL_UNFOCUS:
  89                 messageMode();
  90                 break;
  91         case FL_KEYBOARD:
  92         {
  93                 string input;
  94                 if (information_displayed_) {
  95                         information_timer_->stop();
  96                         input = stored_input;
  97                         restore_input();
  98                 } else {
  99                         char const * tmp = fl_get_input(ob);
 100                         input = tmp ? tmp : "";
 101                 }
 102
 103
 104                 switch (key) {
 105                 case XK_Down:
 106                         if (hist_iter != history_->end()) {
 107                                 ++hist_iter;
 108                         }
 109                         if (hist_iter == history_->end()) {
 110                                 // no further history
 111                                 show_information(_("[End of history]"), input);
 112                         } else {
 113                                 set_input((*hist_iter));
 114                         }
 115                         return 1;
 116                 case XK_Up:
 117                         if (hist_iter == history_->begin()) {
 118                                 // no further history
 119                                 show_information(_("[Beginning of history]"),
 120                                                  input);
 121                         } else {
 122                                 --hist_iter;
 123                                 set_input((*hist_iter));
 124                         }
 125                         return 1;
 126                 case 9:
 127                 case XK_Tab:
 128                 {
 129                         // Completion handling.
 130
 131                         vector<string> comp;
 132                         lyx::copy_if(completion_.begin(),
 133                                      completion_.end(),
 134                                      back_inserter(comp), prefix(input));
 135
 136                         if (comp.empty()) {
 137                                 // No matches
 138                                 string const tmp = input + _(" [no match]");
 139                                 show_information(tmp, input);
 140                         } else if (comp.size() == 1) {
 141                                 // Perfect match
 142                                 string const tmp =
 143                                         comp[0] + _(" [sole completion]");
 144                                 show_information(tmp, comp[0] + " ");
 145                         } else {
 146                                 // More that one match
 147                                 // Find maximal avaliable prefix
 148                                 string const tmp = comp[0];
 149                                 string test(input);
 150                                 if (tmp.length() > test.length())
 151                                         test += tmp[test.length()];
 152                                 while (test.length() < tmp.length()) {
 153                                         vector<string> vtmp;
 154                                         lyx::copy_if(comp.begin(),
 155                                                      comp.end(),
 156                                                      back_inserter(vtmp),
 157                                                      prefix(test));
 158                                         if (vtmp.size() != comp.size()) {
 159                                                 test.erase(test.length() - 1);
 160                                                 break;
 161                                         }
 162                                         test += tmp[test.length()];
 163                                 }
 164                                 set_input(test);
 165
 166                                 int x,y,w,h;
 167                                 fl_get_wingeometry(fl_get_real_object_window(the_buffer),
 168                                                    &x, &y, &w, &h);
 169
 170                                 // asynchronous completion
 171                                 int const air = the_buffer->x;
 172                                 x += air;
 173                                 y += h - (the_buffer->h + air);
 174                                 w = the_buffer->w;
 175                                 dropdown_->select(comp, x, y, w);
 176                         }
 177                         return 1;
 178                 }
 179                 case 27:
 180                 case XK_Escape:
 181                         // Abort
 182 #if 0
 183                         owner_->view()->focus(true);
 184 #endif
 185                         message_timeout();
 186                         messageMode();
 187                         //escape.emit();
 188                         return 1;
 189                 case 13:
 190                 case XK_Return:
 191                 {
 192 #if 0
 193                         // This will go in again in a little while
 194                         // we need to be able to declare what types
 195                         // of argumetns LFUN's should have first. (Lgb)
 196                         // First check for match
 197                         vector<string>::const_iterator cit =
 198                                 find(completion_.begin(),
 199                                      completion_.end(),
 200                                      input);
 201                         if (cit == completion_.end()) {
 202                                 // no such func/item
 203                                 string const tmp = input + _(" [no match]");
 204                                 show_information(tmp, input);
 205                         } else {
 206 #endif
 207                                 // Return the inputted string
 208                                 messageMode();
 209 #if 0
 210                                 owner_->view()->focus(true);
 211 #endif
 212                                 if (!input.empty()) {
 213                                         history_->push_back(input);
 214                                 }
 215                                 inputReady(input);
 216 # if 0
 217                         }
 218 #endif
 219                         return 1;
 220                 }
 221                 default:
 222                         return 0;
 223                 }
 224         }
 225         default:
 226                 //lyxerr << "Unhandled minibuffer event!" << endl;
 227                 break;
 228         }
 229
 230         return 0;
 231 }
 232
 233
 234 extern "C" {
 235
 236         static
 237         int C_XMiniBuffer_peek_event(FL_OBJECT * ob, int event,
 238                                      FL_Coord, FL_Coord,
 239                                      int key, void * xev)
 240         {
 241                 XMiniBuffer * mini = static_cast<XMiniBuffer*>(ob->u_vdata);
 242                 return mini->peek_event(ob, event, key,
 243                                         static_cast<XEvent *>(xev));
 244         }
 245
 246 }
 247
 248
 249 FL_OBJECT * XMiniBuffer::create_input_box(int type, FL_Coord x, FL_Coord y,
 250                                           FL_Coord w, FL_Coord h)
 251 {
 252         FL_OBJECT * obj;
 253
 254         the_buffer = obj = fl_add_input(type, x, y, w, h, text.c_str());
 255         fl_set_object_boxtype(obj, FL_DOWN_BOX);
 256         fl_set_object_resize(obj, FL_RESIZE_ALL);
 257         fl_set_object_gravity(obj, SouthWestGravity, SouthEastGravity);
 258         fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 259         fl_set_object_lsize(obj, FL_NORMAL_SIZE);
 260
 261         // To intercept Up, Down, Table for history
 262         fl_set_object_prehandler(obj, C_XMiniBuffer_peek_event);
 263         obj->u_vdata = this;
 264         obj->wantkey = FL_KEY_TAB;
 265
 266         set_input(text);
 267
 268         return obj;
 269 }
 270
 271
 272 bool XMiniBuffer::isEditingMode() const
 273 {
 274         return the_buffer->focus;
 275 }
 276
 277
 278 void XMiniBuffer::editingMode()
 279 {
 280         fl_activate_object(the_buffer);
 281         fl_set_focus_object(static_cast<XFormsView *>(owner_)->getForm(),
 282                             the_buffer);
 283         redraw();
 284 }
 285
 286
 287 void XMiniBuffer::messageMode()
 288 {
 289         fl_deactivate_object(the_buffer);
 290         redraw();
 291 }
 292
 293
 294 void XMiniBuffer::redraw()
 295 {
 296         fl_redraw_object(the_buffer);
 297         XFlush(fl_display);
 298 }
 299
 300
 301 void XMiniBuffer::append_char(char c)
 302 {
 303         if (!c || !isprint(c))
 304                 return;
 305
 306         char const * tmp = fl_get_input(the_buffer);
 307         string str = tmp ? tmp : "";
 308
 309         str += c;
 310
 311         fl_set_input(the_buffer, str.c_str());
 312 }
 313
 314
 315 void XMiniBuffer::set_input(string const & str)
 316 {
 317         fl_set_input(the_buffer, str.c_str());
 318 }