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00038 #include "mythwizard.h"
00039
00040 #include "qlayout.h"
00041 #include "qpushbutton.h"
00042 #include "qcursor.h"
00043 #include "qlabel.h"
00044 #include "qwidgetstack.h"
00045 #include "qapplication.h"
00046 #include "qptrlist.h"
00047 #include "qpainter.h"
00048
00049 #include "mythcontext.h"
00050
00051 class MythWizardPrivate
00052 {
00053 public:
00054 struct Page {
00055 Page( QWidget * widget, const QString & title ):
00056 w( widget ), t( title ),
00057 backEnabled( TRUE ), nextEnabled( TRUE ), finishEnabled( FALSE ),
00058 appropriate( TRUE )
00059 {}
00060 QWidget * w;
00061 QString t;
00062 bool backEnabled;
00063 bool nextEnabled;
00064 bool finishEnabled;
00065 bool appropriate;
00066 };
00067
00068 QVBoxLayout * v;
00069 Page * current;
00070 QWidgetStack * ws;
00071 QPtrList<Page> pages;
00072 QLabel * title;
00073 MythPushButton * backButton;
00074 MythPushButton * nextButton;
00075 MythPushButton * finishButton;
00076 MythPushButton * cancelButton;
00077
00078 QGroupBox *helpgroup;
00079 QLabel *help;
00080
00081 QFrame * hbar1, * hbar2;
00082
00083 Page * page( const QWidget * w )
00084 {
00085 if ( !w )
00086 return 0;
00087 int i = pages.count();
00088 while( --i >= 0 && pages.at( i ) && pages.at( i )->w != w ) { }
00089 return i >= 0 ? pages.at( i ) : 0;
00090 }
00091
00092 };
00093
00094 MythWizard::MythWizard(MythMainWindow *parent, const char *name)
00095 : MythDialog(parent, name)
00096 {
00097 d = new MythWizardPrivate();
00098 d->current = 0;
00099 d->ws = new QWidgetStack( this, "qt_widgetstack" );
00100 d->pages.setAutoDelete( TRUE );
00101 d->title = new QLabel( this, "title label" );
00102 d->title->setBackgroundOrigin(QWidget::WindowOrigin);
00103
00104
00105 d->nextButton = new MythPushButton( this, "next" );
00106 d->finishButton = new MythPushButton( this, "finish" );
00107 d->backButton = new MythPushButton( this, "back" );
00108 d->cancelButton = new MythPushButton( this, "cancel" );
00109
00110 d->ws->installEventFilter( this );
00111
00112 d->helpgroup = 0;
00113 d->help = 0;
00114 d->v = 0;
00115 d->hbar1 = 0;
00116 d->hbar2 = 0;
00117
00118 d->cancelButton->setText( tr( "&Cancel" ) );
00119 d->backButton->setText( tr( "< &Back" ) );
00120 d->nextButton->setText( tr( "&Next >" ) );
00121 d->finishButton->setText( tr( "&Finish" ) );
00122
00123 d->nextButton->setDefault( TRUE );
00124
00125 connect( d->backButton, SIGNAL(clicked()),
00126 this, SLOT(back()) );
00127 connect( d->nextButton, SIGNAL(clicked()),
00128 this, SLOT(next()) );
00129 connect( d->finishButton, SIGNAL(clicked()),
00130 this, SLOT(accept()) );
00131 connect( d->cancelButton, SIGNAL(clicked()),
00132 this, SLOT(reject()) );
00133 }
00134
00135 MythWizard::~MythWizard()
00136 {
00137 delete d;
00138 }
00139
00140 void MythWizard::Show()
00141 {
00142 if ( d->current )
00143 showPage( d->current->w );
00144 else if ( pageCount() > 0 )
00145 showPage( d->pages.at( 0 )->w );
00146 else
00147 showPage( 0 );
00148
00149 MythDialog::Show();
00150 }
00151
00152 void MythWizard::setFont( const QFont & font )
00153 {
00154 QApplication::postEvent( this, new QEvent( QEvent::LayoutHint ) );
00155 setFont( font );
00156 }
00157
00158 void MythWizard::addPage( QWidget * page, const QString & title )
00159 {
00160 if ( !page )
00161 return;
00162 if ( d->page( page ) ) {
00163 qWarning( "MythWizard::addPage(): already added %s/%s to %s/%s",
00164 page->className(), page->name(),
00165 className(), name() );
00166 return;
00167 }
00168 int i = d->pages.count();
00169
00170 if ( i > 0 )
00171 d->pages.at( i - 1 )->nextEnabled = TRUE;
00172
00173 MythWizardPrivate::Page * p = new MythWizardPrivate::Page( page, title );
00174 p->backEnabled = ( i > 0 );
00175 d->ws->addWidget( page, i );
00176 d->pages.append( p );
00177 }
00178
00179 void MythWizard::insertPage( QWidget * page, const QString & title, int index )
00180 {
00181 if ( !page )
00182 return;
00183 if ( d->page( page ) ) {
00184 qWarning( "MythWizard::insertPage(): already added %s/%s to %s/%s",
00185 page->className(), page->name(),
00186 className(), name() );
00187 return;
00188 }
00189
00190 if ( index < 0 || index > (int)d->pages.count() )
00191 index = d->pages.count();
00192
00193 if ( index > 0 && ( index == (int)d->pages.count() ) )
00194 d->pages.at( index - 1 )->nextEnabled = TRUE;
00195
00196 MythWizardPrivate::Page * p = new MythWizardPrivate::Page( page, title );
00197 p->backEnabled = ( index > 0 );
00198 p->nextEnabled = ( index < (int)d->pages.count() );
00199
00200 d->ws->addWidget( page, index );
00201 d->pages.insert( index, p );
00202 }
00203
00204 void MythWizard::showPage( QWidget * page )
00205 {
00206 MythWizardPrivate::Page * p = d->page( page );
00207 if ( p ) {
00208 int i;
00209 for( i = 0; i < (int)d->pages.count() && d->pages.at( i ) != p; i++ );
00210 bool notFirst( FALSE );
00211
00212 if ( i ) {
00213 i--;
00214 while( ( i >= 0 ) && !notFirst ) {
00215 notFirst |= appropriate( d->pages.at( i )->w );
00216 i--;
00217 }
00218 }
00219 setBackEnabled( notFirst );
00220 setNextEnabled( TRUE );
00221 d->ws->raiseWidget( page );
00222 d->current = p;
00223 }
00224
00225 layOut();
00226 updateButtons();
00227 emit selected( p ? p->t : QString::null );
00228
00229 if (indexOf(page) == pageCount()-1) {
00230
00231 finishButton()->setEnabled(TRUE);
00232 finishButton()->setFocus();
00233 } else {
00234 nextButton()->setFocus();
00235 }
00236 }
00237
00238 int MythWizard::pageCount() const
00239 {
00240 return d->pages.count();
00241 }
00242
00243 int MythWizard::indexOf( QWidget* page ) const
00244 {
00245 MythWizardPrivate::Page * p = d->page( page );
00246 if ( !p ) return -1;
00247
00248 return d->pages.find( p );
00249 }
00250
00251 void MythWizard::back()
00252 {
00253 int i = 0;
00254
00255 while( i < (int)d->pages.count() && d->pages.at( i ) &&
00256 d->current && d->pages.at( i )->w != d->current->w )
00257 i++;
00258
00259 i--;
00260 while( i >= 0 &&
00261 ( !d->pages.at( i ) || !appropriate( d->pages.at( i )->w ) ) )
00262 i--;
00263
00264 if ( i >= 0 )
00265 if ( d->pages.at( i ) )
00266 showPage( d->pages.at( i )->w );
00267 }
00268
00269 void MythWizard::next()
00270 {
00271 int i = 0;
00272 while( i < (int)d->pages.count() && d->pages.at( i ) &&
00273 d->current && d->pages.at( i )->w != d->current->w )
00274 i++;
00275 i++;
00276 while( i <= (int)d->pages.count()-1 &&
00277 ( !d->pages.at( i ) || !appropriate( d->pages.at( i )->w ) ) )
00278 i++;
00279 while ( i > 0 && (i >= (int)d->pages.count() || !d->pages.at( i ) ) )
00280 i--;
00281 if ( d->pages.at( i ) )
00282 showPage( d->pages.at( i )->w );
00283 }
00284
00285 void MythWizard::setBackEnabled( bool enable )
00286 {
00287 d->backButton->setEnabled( enable );
00288 }
00289
00290 void MythWizard::setNextEnabled( bool enable )
00291 {
00292 d->nextButton->setEnabled( enable );
00293 }
00294
00295 void MythWizard::setBackEnabled( QWidget * page, bool enable )
00296 {
00297 MythWizardPrivate::Page * p = d->page( page );
00298 if ( !p )
00299 return;
00300
00301 p->backEnabled = enable;
00302 updateButtons();
00303 }
00304
00305 void MythWizard::setNextEnabled( QWidget * page, bool enable )
00306 {
00307 MythWizardPrivate::Page * p = d->page( page );
00308 if ( !p )
00309 return;
00310
00311 p->nextEnabled = enable;
00312 updateButtons();
00313 }
00314
00315 void MythWizard::setFinishEnabled( QWidget * page, bool enable )
00316 {
00317 MythWizardPrivate::Page * p = d->page( page );
00318 if ( !p )
00319 return;
00320
00321 p->finishEnabled = enable;
00322 updateButtons();
00323 }
00324
00325 bool MythWizard::appropriate( QWidget * page ) const
00326 {
00327 MythWizardPrivate::Page * p = d->page( page );
00328 return p ? p->appropriate : TRUE;
00329 }
00330
00331 void MythWizard::setAppropriate( QWidget * page, bool appropriate )
00332 {
00333 MythWizardPrivate::Page * p = d->page( page );
00334 if ( p )
00335 p->appropriate = appropriate;
00336 }
00337
00338 void MythWizard::updateButtons()
00339 {
00340 if ( !d->current )
00341 return;
00342
00343 int i;
00344 for( i = 0; i < (int)d->pages.count() && d->pages.at( i ) != d->current; i++ );
00345 bool notFirst( FALSE );
00346 if ( i ) {
00347 i--;
00348 while( ( i >= 0 ) && !notFirst ) {
00349 notFirst |= appropriate( d->pages.at( i )->w );
00350 i--;
00351 }
00352 }
00353 setBackEnabled( d->current->backEnabled && notFirst );
00354 setNextEnabled( d->current->nextEnabled );
00355 d->finishButton->setEnabled( d->current->finishEnabled );
00356
00357 if ( ( d->current->finishEnabled && !d->finishButton->isVisible() ) ||
00358 ( d->current->backEnabled && !d->backButton->isVisible() ) ||
00359 ( d->current->nextEnabled && !d->nextButton->isVisible() ) )
00360 layOut();
00361 }
00362
00363 QWidget * MythWizard::currentPage() const
00364 {
00365 return d->ws->visibleWidget();
00366 }
00367
00368 QString MythWizard::title( QWidget * page ) const
00369 {
00370 MythWizardPrivate::Page * p = d->page( page );
00371 return p ? p->t : QString::null;
00372 }
00373
00374 void MythWizard::setTitle( QWidget *page, const QString &title )
00375 {
00376 MythWizardPrivate::Page * p = d->page( page );
00377 if ( p )
00378 p->t = title;
00379 if ( page == currentPage() )
00380 d->title->setText( title );
00381 }
00382
00383 QFont MythWizard::titleFont() const
00384 {
00385 return d->title->font();
00386 }
00387
00388 void MythWizard::setTitleFont( const QFont & font )
00389 {
00390 d->title->setFont( font );
00391 }
00392
00393 MythPushButton * MythWizard::backButton() const
00394 {
00395 return d->backButton;
00396 }
00397
00398 MythPushButton * MythWizard::nextButton() const
00399 {
00400 return d->nextButton;
00401 }
00402
00403 MythPushButton * MythWizard::finishButton() const
00404 {
00405 return d->finishButton;
00406 }
00407
00408 MythPushButton * MythWizard::cancelButton() const
00409 {
00410 return d->cancelButton;
00411 }
00412
00413 void MythWizard::layOutButtonRow( QHBoxLayout * layout )
00414 {
00415 bool hasEarlyFinish = FALSE;
00416
00417 int i = d->pages.count() - 2;
00418 while ( !hasEarlyFinish && i >= 0 ) {
00419 if ( d->pages.at( i ) && d->pages.at( i )->finishEnabled )
00420 hasEarlyFinish = TRUE;
00421 i--;
00422 }
00423
00424 QBoxLayout * h = new QBoxLayout( QBoxLayout::LeftToRight );
00425 layout->addLayout( h );
00426
00427 h->addWidget( d->cancelButton );
00428
00429 h->addStretch( 42 );
00430
00431 h->addWidget( d->backButton );
00432
00433 h->addSpacing( 6 );
00434
00435 if ( hasEarlyFinish ) {
00436 d->nextButton->show();
00437 d->finishButton->show();
00438 h->addWidget( d->nextButton );
00439 h->addSpacing( 12 );
00440 h->addWidget( d->finishButton );
00441 } else if ( d->pages.count() == 0 ||
00442 d->current->finishEnabled ||
00443 d->current == d->pages.at( d->pages.count()-1 ) ) {
00444 d->nextButton->hide();
00445 d->finishButton->show();
00446 h->addWidget( d->finishButton );
00447 } else {
00448 d->nextButton->show();
00449 d->finishButton->hide();
00450 h->addWidget( d->nextButton );
00451 }
00452
00453
00454 i = d->pages.count()-1;
00455 if ( i >= 0 && !appropriate( d->pages.at( i )->w ) &&
00456 d->current == d->pages.at( d->pages.count()-2 ) ) {
00457 d->nextButton->hide();
00458 d->finishButton->show();
00459 h->addWidget( d->finishButton );
00460 }
00461 }
00462
00463 void MythWizard::layOutTitleRow( QHBoxLayout * layout, const QString & title )
00464 {
00465 d->title->setText( title );
00466 layout->addWidget( d->title, 10 );
00467 }
00468
00469 void MythWizard::layOut()
00470 {
00471 delete d->v;
00472 d->v = new QVBoxLayout( this, 6, 0, "top-level layout" );
00473
00474 QHBoxLayout * l;
00475 l = new QHBoxLayout( 6 );
00476 d->v->addLayout( l, 0 );
00477 layOutTitleRow( l, d->current ? d->current->t : QString::null );
00478
00479 if ( ! d->hbar1 ) {
00480 d->hbar1 = new QFrame( this, "<hr>", 0 );
00481 d->hbar1->setBackgroundOrigin(QWidget::WindowOrigin);
00482 d->hbar1->setFrameStyle( QFrame::Sunken + QFrame::HLine );
00483 d->hbar1->setFixedHeight( 12 );
00484 }
00485
00486 d->v->addWidget( d->hbar1 );
00487
00488 d->v->addWidget( d->ws, 10 );
00489
00490 if (!d->helpgroup)
00491 {
00492 d->helpgroup = new QGroupBox(this, "help-group-box");
00493 d->helpgroup->setBackgroundOrigin(QWidget::WindowOrigin);
00494
00495 d->help = new QLabel(d->helpgroup, "help text");
00496 d->help->setBackgroundOrigin(QWidget::WindowOrigin);
00497
00498 d->help->setAlignment(Qt::WordBreak | Qt::AlignLeft | Qt::AlignTop);
00499
00500 d->help->setMinimumWidth(screenwidth - (int)(40 * wmult));
00501 d->help->setMaximumHeight((int)(80 * hmult));
00502 d->help->setMinimumHeight((int)(80 * hmult));
00503
00504 QVBoxLayout *helplayout = new QVBoxLayout(d->helpgroup, 10);
00505 helplayout->add(d->help);
00506 }
00507 else
00508 {
00509 d->help->setText("");
00510 }
00511
00512 d->v->addWidget(d->helpgroup);
00513
00514 if ( ! d->hbar2 ) {
00515 d->hbar2 = new QFrame( this, "<hr>", 0 );
00516 d->hbar2->setBackgroundOrigin(QWidget::WindowOrigin);
00517 d->hbar2->setFrameStyle( QFrame::Sunken + QFrame::HLine );
00518 d->hbar2->setFixedHeight( 12 );
00519 }
00520 d->v->addWidget( d->hbar2 );
00521
00522 l = new QHBoxLayout( 6 );
00523 d->v->addLayout( l );
00524 layOutButtonRow( l );
00525 d->v->activate();
00526 }
00527
00528 bool MythWizard::eventFilter( QObject * o, QEvent * e )
00529 {
00530 if ( o == d->ws && e && e->type() == QEvent::ChildRemoved ) {
00531 QChildEvent * c = (QChildEvent*)e;
00532 if ( c->child() && c->child()->isWidgetType() )
00533 removePage( (QWidget *)c->child() );
00534 }
00535 return QWidget::eventFilter( o, e );
00536 }
00537
00538 void MythWizard::keyPressEvent(QKeyEvent* e)
00539 {
00540 bool handled = false;
00541 QStringList actions;
00542 if (gContext->GetMainWindow()->TranslateKeyPress("qt", e, actions))
00543 {
00544 for (unsigned int i = 0; i < actions.size() && !handled; i++)
00545 {
00546 QString action = actions[i];
00547 handled = true;
00548
00549 if (action == "SELECT")
00550 {
00551 if (indexOf(currentPage()) == pageCount()-1)
00552 accept();
00553 else
00554 next();
00555 }
00556 else if (action == "ESCAPE")
00557 {
00558 if (indexOf(currentPage()) == 0)
00559 reject();
00560 else
00561 {
00562 back();
00563 QApplication::postEvent(gContext->GetMainWindow(),
00564 new ExitToMainMenuEvent());
00565 }
00566 }
00567 else
00568 handled = false;
00569 }
00570 }
00571
00572 if (!handled)
00573 MythDialog::keyPressEvent(e);
00574 }
00575
00576 void MythWizard::removePage( QWidget * page )
00577 {
00578 if ( !page )
00579 return;
00580
00581 int i = d->pages.count();
00582 QWidget* cp = currentPage();
00583 while( --i >= 0 && d->pages.at( i ) && d->pages.at( i )->w != page ) { }
00584 if ( i < 0 )
00585 return;
00586 MythWizardPrivate::Page * p = d->pages.at( i );
00587 d->pages.removeRef( p );
00588 d->ws->removeWidget( page );
00589
00590 if ( cp == page ) {
00591 i--;
00592 if ( i < 0 )
00593 i = 0;
00594 if ( pageCount() > 0 )
00595 showPage( MythWizard::page( i ) );
00596 }
00597 }
00598
00599 QWidget* MythWizard::page( int index ) const
00600 {
00601 if ( index >= pageCount() || index < 0 )
00602 return 0;
00603
00604 return d->pages.at( index )->w;
00605 }
00606
00607 void MythWizard::setHelpText(QString helptext)
00608 {
00609 if (!d->help)
00610 return;
00611
00612 d->help->setText(helptext);
00613 d->help->setMinimumWidth(screenwidth - (int)(40 * wmult));
00614 d->help->setMaximumHeight((int)(80 * hmult));
00615 }
00616
00617 MythJumpWizard::MythJumpWizard(MythMainWindow *parent, const char *name) :
00618 MythWizard(parent, name)
00619 {
00620 }
00621
00622 MythJumpWizard::~MythJumpWizard()
00623 {
00624 }
