src/frontends/ButtonPolicies.C

   1 // -*- C++ -*-
   2 /* ButtonPolicies.C
   3  * Provides a state machine implementation of the various button policies
   4  * used by the dialogs.
   5  * Author: Allan Rae <rae@lyx.org>
   6  * This file is part of
   7  * ======================================================
   8  *
   9  *           LyX, The Document Processor
  10  *
  11  *           Copyright 1995 Matthias Ettrich
  12  *           Copyright 1995-2000 The LyX Team.
  13  *
  14  *           This file Copyright 2000
  15  *           Allan Rae
  16  * ======================================================
  17  */
  18
  19 #include <config.h>
  20 #include "ButtonPolicies.h"
  21 #include "debug.h"
  22
  23
  24 // Helper function
  25 inline void nextState(ButtonPolicy::State & state,
  26                ButtonPolicy::SMInput in,
  27                ButtonPolicy::StateMachine s_m,
  28                char const * function_name = "nextState")
  29 {
  30         ButtonPolicy::State tmp = s_m[state][in];
  31         if (ButtonPolicy::BOGUS != tmp) {
  32                 state = tmp;
  33         } else {
  34                 lyxerr << function_name
  35                        << ": No transition for input "
  36                        << in
  37                        << " from state "
  38                        << state
  39                        << std::endl;
  40         }
  41 }
  42
  43
  44 /*-----------------------------PreferencesPolicy-----------------------------*/
  45
  46
  47 PreferencesPolicy::PreferencesPolicy()
  48         : state_(INITIAL),
  49           outputs_(APPLIED+1,
  50                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
  51           state_machine_(APPLIED+1,
  52                          StateArray(SMI_TOTAL,
  53                                     static_cast<State const &>(BOGUS)))
  54 {
  55         // Build the state output map
  56         outputs_[INITIAL] = CLOSE;
  57         outputs_[VALID] = UNDO_ALL | OKAY | APPLY | CANCEL;
  58         outputs_[INVALID] = UNDO_ALL | CANCEL;
  59         outputs_[APPLIED] = OKAY | CLOSE;
  60
  61         // Build the state machine one state at a time
  62         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
  63         //        left out of the state machine and handled explicitly
  64         //        in input().  This won't necessarily be true for all
  65         //        policies though so I'll leave those two as distinct
  66         //        inputs rather than merge them.  For example, a dialog
  67         //        that doesn't update it's input fields when reshown
  68         //        after being hidden needs a policy where CANCEL and
  69         //        HIDE are treated differently.
  70         //
  71         // State::INITIAL
  72         state_machine_[INITIAL][SMI_READ_ONLY] = INITIAL;
  73         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
  74         state_machine_[INITIAL][SMI_VALID] = VALID;
  75         state_machine_[INITIAL][SMI_INVALID] = INVALID;
  76         // State::VALID
  77         state_machine_[VALID][SMI_VALID] = VALID;
  78         state_machine_[VALID][SMI_READ_ONLY] = VALID;
  79         state_machine_[VALID][SMI_READ_WRITE] = VALID;
  80         state_machine_[VALID][SMI_INVALID] = INVALID;
  81         state_machine_[VALID][SMI_APPLY] = APPLIED;
  82         state_machine_[VALID][SMI_OKAY] = INITIAL;
  83         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
  84         // State::INVALID
  85         state_machine_[INVALID][SMI_VALID] = VALID;
  86         state_machine_[INVALID][SMI_INVALID] = INVALID;
  87         state_machine_[INVALID][SMI_READ_ONLY] = INVALID;
  88         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
  89         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
  90         // State::APPLIED
  91         state_machine_[APPLIED][SMI_VALID] = VALID;
  92         state_machine_[APPLIED][SMI_INVALID] = INVALID;
  93         state_machine_[APPLIED][SMI_OKAY] = INITIAL;
  94         state_machine_[APPLIED][SMI_READ_ONLY] = APPLIED;
  95         state_machine_[APPLIED][SMI_READ_WRITE] = APPLIED;
  96 }
  97
  98
  99 void PreferencesPolicy::input(SMInput input)
 100 {
 101         // CANCEL and HIDE always take us to INITIAL for all cases.
 102         // Note that I didn't put that special case in the helper function
 103         // because it doesn't belong there.  Some other
 104         // This is probably optimising for the wrong case since it occurs as the
 105         // dialog will be hidden.  It would have saved a little memory in the
 106         // state machine if I could have gotten map working. ARRae 20000813
 107         if (SMI_CANCEL == input
 108             || SMI_HIDE == input) {
 109                 state_ = INITIAL;
 110         } else {
 111                 nextState(state_,
 112                           input,
 113                           state_machine_,
 114                           "PreferencesPolicy");
 115         }
 116 }
 117
 118
 119 /*-------------------------------OkCancelPolicy------------------------------*/
 120
 121
 122 OkCancelPolicy::OkCancelPolicy()
 123         : state_(INITIAL),
 124           outputs_(INVALID+1,
 125                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 126           state_machine_(INVALID+1,
 127                          StateArray(SMI_TOTAL,
 128                                     static_cast<State const &>(BOGUS)))
 129 {
 130         // Build the state output map
 131         outputs_[INITIAL] = CLOSE;
 132         outputs_[VALID] = UNDO_ALL | OKAY | CANCEL;
 133         outputs_[INVALID] = UNDO_ALL | CANCEL;
 134
 135         // Build the state machine one state at a time
 136         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 137         //        left out of the state machine and handled explicitly
 138         //        in input()
 139         //
 140         // State::INITIAL
 141         state_machine_[INITIAL][SMI_READ_ONLY] = INITIAL;
 142         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 143         state_machine_[INITIAL][SMI_VALID] = VALID;
 144         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 145         // State::VALID
 146         state_machine_[VALID][SMI_VALID] = VALID;
 147         state_machine_[VALID][SMI_READ_ONLY] = VALID;
 148         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 149         state_machine_[VALID][SMI_INVALID] = INVALID;
 150         state_machine_[VALID][SMI_OKAY] = INITIAL;
 151         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 152         // State::INVALID
 153         state_machine_[INVALID][SMI_VALID] = VALID;
 154         state_machine_[INVALID][SMI_INVALID] = INVALID;
 155         state_machine_[INVALID][SMI_READ_ONLY] = INVALID;
 156         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 157         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 158 }
 159
 160
 161
 162 void OkCancelPolicy::input(SMInput input)
 163 {
 164         // CANCEL and HIDE always take us to INITIAL for all cases
 165         if (SMI_CANCEL == input
 166             || SMI_HIDE == input) {
 167                 state_ = INITIAL;
 168         } else {
 169                 nextState(state_, input, state_machine_, "OkCancelPolicy");
 170         }
 171 }
 172
 173
 174 /*---------------------------OkCancelReadOnlyPolicy-------------------------*/
 175
 176
 177 OkCancelReadOnlyPolicy::OkCancelReadOnlyPolicy()
 178         : state_(INITIAL),
 179           outputs_(RO_INVALID+1,
 180                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 181           state_machine_(RO_INVALID+1,
 182                          StateArray(SMI_TOTAL,
 183                                     static_cast<State const &>(BOGUS)))
 184 {
 185         // Build the state output map
 186         outputs_[INITIAL] = CLOSE;
 187         outputs_[VALID] = UNDO_ALL | OKAY | CANCEL;
 188         outputs_[INVALID] = UNDO_ALL | CANCEL;
 189         outputs_[RO_INITIAL] = CLOSE;
 190         outputs_[RO_VALID] = UNDO_ALL | CANCEL;
 191         outputs_[RO_INVALID] = UNDO_ALL | CANCEL;
 192
 193         // Build the state machine one state at a time
 194         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 195         //        left out of the state machine and handled explicitly
 196         //        in input()
 197         //
 198         // State::INITIAL
 199         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 200         state_machine_[INITIAL][SMI_VALID] = VALID;
 201         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 202         state_machine_[INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 203         // State::VALID
 204         state_machine_[VALID][SMI_VALID] = VALID;
 205         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 206         state_machine_[VALID][SMI_INVALID] = INVALID;
 207         state_machine_[VALID][SMI_OKAY] = INITIAL;
 208         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 209         state_machine_[VALID][SMI_READ_ONLY] = RO_VALID;
 210         // State::INVALID
 211         state_machine_[INVALID][SMI_INVALID] = INVALID;
 212         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 213         state_machine_[INVALID][SMI_VALID] = VALID;
 214         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 215         state_machine_[INVALID][SMI_READ_ONLY] = RO_INVALID;
 216         // State::RO_INITIAL
 217         state_machine_[RO_INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 218         state_machine_[RO_INITIAL][SMI_VALID] = RO_VALID;
 219         state_machine_[RO_INITIAL][SMI_INVALID] = RO_INVALID;
 220         state_machine_[RO_INITIAL][SMI_READ_WRITE] = INITIAL;
 221         // State::RO_VALID
 222         state_machine_[RO_VALID][SMI_VALID] = RO_VALID;
 223         state_machine_[RO_VALID][SMI_READ_ONLY] = RO_VALID;
 224         state_machine_[RO_VALID][SMI_INVALID] = RO_INVALID;
 225         state_machine_[RO_VALID][SMI_READ_WRITE] = VALID;
 226         state_machine_[RO_VALID][SMI_UNDO_ALL] = RO_INITIAL;
 227         // State::RO_INVALID
 228         state_machine_[RO_INVALID][SMI_READ_ONLY] = RO_INVALID;
 229         state_machine_[RO_INVALID][SMI_INVALID] = RO_INVALID;
 230         state_machine_[RO_INVALID][SMI_VALID] = RO_VALID;
 231         state_machine_[RO_INVALID][SMI_READ_WRITE] = INVALID;
 232         state_machine_[RO_INVALID][SMI_UNDO_ALL] = RO_INITIAL;
 233 }
 234
 235
 236 void OkCancelReadOnlyPolicy::input(SMInput input)
 237 {
 238         // CANCEL and HIDE always take us to INITIAL for all cases
 239         if (SMI_CANCEL == input
 240             || SMI_HIDE == input) {
 241                 state_ = INITIAL;
 242         } else {
 243                 nextState(state_,
 244                           input,
 245                           state_machine_,
 246                           "OkCancelReadOnlyPolicy");
 247         }
 248 }
 249
 250
 251 /*--------------------------NoRepeatedApplyReadOnlyPolicy----------------------*/
 252
 253
 254 NoRepeatedApplyReadOnlyPolicy::NoRepeatedApplyReadOnlyPolicy()
 255         : state_(INITIAL),
 256           outputs_(RO_INVALID+1,
 257                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 258           state_machine_(RO_INVALID+1,
 259                          StateArray(SMI_TOTAL,
 260                                     static_cast<State const &>(BOGUS)))
 261 {
 262         // Build the state output map
 263         outputs_[INITIAL] = CLOSE;
 264         outputs_[VALID] = UNDO_ALL | OKAY | APPLY | CANCEL;
 265         outputs_[INVALID] = UNDO_ALL | CANCEL;
 266         outputs_[RO_INITIAL] = CLOSE;
 267         outputs_[RO_VALID] = UNDO_ALL | CANCEL;
 268         outputs_[RO_INVALID] = UNDO_ALL | CANCEL;
 269
 270         // Build the state machine one state at a time
 271         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 272         //        left out of the state machine and handled explicitly
 273         //        in input()
 274         //
 275         // State::INITIAL
 276         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 277         state_machine_[INITIAL][SMI_VALID] = VALID;
 278         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 279         state_machine_[INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 280         // State::VALID
 281         state_machine_[VALID][SMI_VALID] = VALID;
 282         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 283         state_machine_[VALID][SMI_INVALID] = INVALID;
 284         state_machine_[VALID][SMI_OKAY] = INITIAL;
 285         state_machine_[VALID][SMI_APPLY] = INITIAL;
 286         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 287         state_machine_[VALID][SMI_READ_ONLY] = RO_VALID;
 288         // State::INVALID
 289         state_machine_[INVALID][SMI_INVALID] = INVALID;
 290         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 291         state_machine_[INVALID][SMI_VALID] = VALID;
 292         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 293         state_machine_[INVALID][SMI_READ_ONLY] = RO_INVALID;
 294         // State::RO_INITIAL
 295         state_machine_[RO_INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 296         state_machine_[RO_INITIAL][SMI_VALID] = RO_VALID;
 297         state_machine_[RO_INITIAL][SMI_INVALID] = RO_INVALID;
 298         state_machine_[RO_INITIAL][SMI_READ_WRITE] = INITIAL;
 299         // State::RO_VALID
 300         state_machine_[RO_VALID][SMI_VALID] = RO_VALID;
 301         state_machine_[RO_VALID][SMI_READ_ONLY] = RO_VALID;
 302         state_machine_[RO_VALID][SMI_INVALID] = RO_INVALID;
 303         state_machine_[RO_VALID][SMI_READ_WRITE] = VALID;
 304         state_machine_[RO_VALID][SMI_UNDO_ALL] = RO_INITIAL;
 305         // State::RO_INVALID
 306         state_machine_[RO_INVALID][SMI_INVALID] = RO_INVALID;
 307         state_machine_[RO_INVALID][SMI_READ_ONLY] = RO_INVALID;
 308         state_machine_[RO_INVALID][SMI_VALID] = RO_VALID;
 309         state_machine_[RO_INVALID][SMI_READ_WRITE] = INVALID;
 310         state_machine_[RO_INVALID][SMI_UNDO_ALL] = RO_INITIAL;
 311 }
 312
 313
 314 void NoRepeatedApplyReadOnlyPolicy::input(SMInput input)
 315 {
 316         // CANCEL and HIDE always take us to INITIAL for all cases
 317         if (SMI_CANCEL == input
 318             || SMI_HIDE == input) {
 319                 state_ = INITIAL;
 320         } else {
 321                 nextState(state_,
 322                           input,
 323                           state_machine_,
 324                           "NoRepeatedApplyReadOnlyPolicy");
 325         }
 326 }
 327
 328
 329 /*--------------------------OkApplyCancelReadOnlyPolicy----------------------*/
 330
 331
 332 OkApplyCancelReadOnlyPolicy::OkApplyCancelReadOnlyPolicy()
 333         : state_(INITIAL),
 334           outputs_(RO_APPLIED+1,
 335                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 336           state_machine_(RO_APPLIED+1,
 337                          StateArray(SMI_TOTAL,
 338                                     static_cast<State const &>(BOGUS)))
 339 {
 340         // Build the state output map
 341         outputs_[INITIAL] = CLOSE;
 342         outputs_[VALID] = UNDO_ALL | OKAY | APPLY | CANCEL;
 343         outputs_[INVALID] = UNDO_ALL | CANCEL;
 344         outputs_[APPLIED] = OKAY | APPLY | CLOSE;
 345         outputs_[RO_INITIAL] = CLOSE;
 346         outputs_[RO_VALID] = UNDO_ALL | CANCEL;
 347         outputs_[RO_INVALID] = UNDO_ALL | CANCEL;
 348         outputs_[RO_APPLIED] = CLOSE;
 349
 350         // Build the state machine one state at a time
 351         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 352         //        left out of the state machine and handled explicitly
 353         //        in input()
 354         //
 355         // State::INITIAL
 356         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 357         state_machine_[INITIAL][SMI_VALID] = VALID;
 358         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 359         state_machine_[INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 360         // State::VALID
 361         state_machine_[VALID][SMI_VALID] = VALID;
 362         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 363         state_machine_[VALID][SMI_INVALID] = INVALID;
 364         state_machine_[VALID][SMI_OKAY] = INITIAL;
 365         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 366         state_machine_[VALID][SMI_APPLY] = APPLIED;
 367         state_machine_[VALID][SMI_READ_ONLY] = RO_VALID;
 368         // State::INVALID
 369         state_machine_[INVALID][SMI_INVALID] = INVALID;
 370         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 371         state_machine_[INVALID][SMI_VALID] = VALID;
 372         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 373         state_machine_[INVALID][SMI_READ_ONLY] = RO_INVALID;
 374         // State::APPLIED
 375         state_machine_[APPLIED][SMI_APPLY] = APPLIED;
 376         state_machine_[APPLIED][SMI_READ_WRITE] = APPLIED;
 377         state_machine_[APPLIED][SMI_VALID] = VALID;
 378         state_machine_[APPLIED][SMI_INVALID] = INVALID;
 379         state_machine_[APPLIED][SMI_OKAY] = INITIAL;
 380         state_machine_[APPLIED][SMI_READ_ONLY] = RO_APPLIED;
 381         // State::RO_INITIAL
 382         state_machine_[RO_INITIAL][SMI_READ_ONLY] = RO_INITIAL;
 383         state_machine_[RO_INITIAL][SMI_VALID] = RO_VALID;
 384         state_machine_[RO_INITIAL][SMI_INVALID] = RO_INVALID;
 385         state_machine_[RO_INITIAL][SMI_READ_WRITE] = INITIAL;
 386         // State::RO_VALID
 387         state_machine_[RO_VALID][SMI_VALID] = RO_VALID;
 388         state_machine_[RO_VALID][SMI_READ_ONLY] = RO_VALID;
 389         state_machine_[RO_VALID][SMI_INVALID] = RO_INVALID;
 390         state_machine_[RO_VALID][SMI_READ_WRITE] = VALID;
 391         state_machine_[RO_VALID][SMI_UNDO_ALL] = RO_INITIAL;
 392         // State::RO_INVALID
 393         state_machine_[RO_INVALID][SMI_INVALID] = RO_INVALID;
 394         state_machine_[RO_INVALID][SMI_READ_ONLY] = RO_INVALID;
 395         state_machine_[RO_INVALID][SMI_VALID] = RO_VALID;
 396         state_machine_[RO_INVALID][SMI_READ_WRITE] = INVALID;
 397         state_machine_[RO_INVALID][SMI_UNDO_ALL] = RO_INITIAL;
 398         // State::RO_APPLIED
 399         state_machine_[RO_APPLIED][SMI_READ_ONLY] = RO_APPLIED;
 400         state_machine_[RO_APPLIED][SMI_INVALID] = RO_INVALID;
 401         state_machine_[RO_APPLIED][SMI_VALID] = RO_VALID;
 402         state_machine_[RO_APPLIED][SMI_READ_WRITE] = APPLIED;
 403 }
 404
 405
 406 void OkApplyCancelReadOnlyPolicy::input(SMInput input)
 407 {
 408         // CANCEL and HIDE always take us to INITIAL for all cases
 409         if (SMI_CANCEL == input
 410             || SMI_HIDE == input) {
 411                 state_ = INITIAL;
 412         } else {
 413                 nextState(state_,
 414                           input,
 415                           state_machine_,
 416                           "OkApplyCancelReadOnlyPolicy");
 417         }
 418 }
 419
 420
 421 /*--------------------------OkApplyCancelPolicy----------------------*/
 422
 423
 424 OkApplyCancelPolicy::OkApplyCancelPolicy()
 425         : state_(INITIAL),
 426           outputs_(APPLIED+1,
 427                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 428           state_machine_(APPLIED+1,
 429                          StateArray(SMI_TOTAL,
 430                                     static_cast<State const &>(BOGUS)))
 431 {
 432         // Build the state output map
 433         outputs_[INITIAL] = CLOSE;
 434         outputs_[VALID] = UNDO_ALL | OKAY | APPLY | CANCEL;
 435         outputs_[INVALID] = UNDO_ALL | CANCEL;
 436         outputs_[APPLIED] = OKAY | APPLY | CLOSE;
 437
 438         // Build the state machine one state at a time
 439         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 440         //        left out of the state machine and handled explicitly
 441         //        in input()
 442         //
 443         // State::INITIAL
 444         state_machine_[INITIAL][SMI_READ_ONLY] = INITIAL;
 445         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 446         state_machine_[INITIAL][SMI_VALID] = VALID;
 447         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 448         // State::VALID
 449         state_machine_[VALID][SMI_VALID] = VALID;
 450         state_machine_[VALID][SMI_READ_ONLY] = VALID;
 451         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 452         state_machine_[VALID][SMI_INVALID] = INVALID;
 453         state_machine_[VALID][SMI_OKAY] = INITIAL;
 454         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 455         state_machine_[VALID][SMI_APPLY] = APPLIED;
 456         // State::INVALID
 457         state_machine_[INVALID][SMI_INVALID] = INVALID;
 458         state_machine_[INVALID][SMI_READ_ONLY] = INVALID;
 459         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 460         state_machine_[INVALID][SMI_VALID] = VALID;
 461         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 462         // State::APPLIED
 463         state_machine_[APPLIED][SMI_APPLY] = APPLIED;
 464         state_machine_[APPLIED][SMI_READ_ONLY] = APPLIED;
 465         state_machine_[APPLIED][SMI_READ_WRITE] = APPLIED;
 466         state_machine_[APPLIED][SMI_VALID] = VALID;
 467         state_machine_[APPLIED][SMI_INVALID] = INVALID;
 468         state_machine_[APPLIED][SMI_OKAY] = INITIAL;
 469 }
 470
 471
 472 void OkApplyCancelPolicy::input(SMInput input)
 473 {
 474         // CANCEL and HIDE always take us to INITIAL for all cases
 475         if (SMI_CANCEL == input
 476             || SMI_HIDE == input) {
 477                 state_ = INITIAL;
 478         } else {
 479                 nextState(state_,
 480                           input,
 481                           state_machine_,
 482                           "OkApplyCancelPolicy");
 483         }
 484 }
 485
 486
 487 /*--------------------------NoRepeatedApplyPolicy----------------------*/
 488
 489
 490 NoRepeatedApplyPolicy::NoRepeatedApplyPolicy()
 491         : state_(INITIAL),
 492           outputs_(INVALID+1,
 493                    static_cast<int const &>(OKAY | APPLY | CANCEL | UNDO_ALL)),
 494           state_machine_(INVALID+1,
 495                          StateArray(SMI_TOTAL,
 496                                     static_cast<State const &>(BOGUS)))
 497 {
 498         // Build the state output map
 499         outputs_[INITIAL] = CLOSE;
 500         outputs_[VALID] = UNDO_ALL | OKAY | APPLY | CANCEL;
 501         outputs_[INVALID] = UNDO_ALL | CANCEL;
 502
 503         // Build the state machine one state at a time
 504         // NOTE:  Since CANCEL and HIDE always go to INITIAL they are
 505         //        left out of the state machine and handled explicitly
 506         //        in input()
 507         //
 508         // State::INITIAL
 509         state_machine_[INITIAL][SMI_READ_ONLY] = INITIAL;
 510         state_machine_[INITIAL][SMI_READ_WRITE] = INITIAL;
 511         state_machine_[INITIAL][SMI_VALID] = VALID;
 512         state_machine_[INITIAL][SMI_INVALID] = INVALID;
 513         // State::VALID
 514         state_machine_[VALID][SMI_VALID] = VALID;
 515         state_machine_[VALID][SMI_READ_ONLY] = VALID;
 516         state_machine_[VALID][SMI_READ_WRITE] = VALID;
 517         state_machine_[VALID][SMI_INVALID] = INVALID;
 518         state_machine_[VALID][SMI_OKAY] = INITIAL;
 519         state_machine_[VALID][SMI_APPLY] = INITIAL;
 520         state_machine_[VALID][SMI_UNDO_ALL] = INITIAL;
 521         // State::INVALID
 522         state_machine_[INVALID][SMI_INVALID] = INVALID;
 523         state_machine_[INVALID][SMI_READ_ONLY] = INVALID;
 524         state_machine_[INVALID][SMI_READ_WRITE] = INVALID;
 525         state_machine_[INVALID][SMI_VALID] = VALID;
 526         state_machine_[INVALID][SMI_UNDO_ALL] = INITIAL;
 527 }
 528
 529
 530 void NoRepeatedApplyPolicy::input(SMInput input)
 531 {
 532         // CANCEL and HIDE always take us to INITIAL for all cases
 533         if (SMI_CANCEL == input
 534             || SMI_HIDE == input) {
 535                 state_ = INITIAL;
 536         } else {
 537                 nextState(state_,
 538                           input,
 539                           state_machine_,
 540                           "NoRepeatedApplyPolicy");
 541         }
 542 }