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00038 #include "mythwizard.h"
00039
00040 #include <QCoreApplication>
00041
00042 #include <QLayout>
00043 #include <QKeyEvent>
00044 #include <QChildEvent>
00045 #include <QCursor>
00046 #include <QPainter>
00047
00048 #include <QStackedWidget>
00049 #include <QPushButton>
00050 #include <QBoxLayout>
00051 #include <QGroupBox>
00052 #include <QLabel>
00053
00054 #include "mythcorecontext.h"
00055
00056 class MythWizardPrivate
00057 {
00058 public:
00059 struct Page {
00060 Page( QWidget * widget, const QString & title ):
00061 w( widget ), t( title ),
00062 backEnabled( TRUE ), nextEnabled( TRUE ), finishEnabled( FALSE ),
00063 appropriate( TRUE )
00064 {}
00065 QWidget * w;
00066 QString t;
00067 bool backEnabled;
00068 bool nextEnabled;
00069 bool finishEnabled;
00070 bool appropriate;
00071 };
00072
00073 QVBoxLayout * v;
00074 Page * current;
00075 QStackedWidget * ws;
00076 QList<Page*> pages;
00077 QLabel * title;
00078 MythPushButton * backButton;
00079 MythPushButton * nextButton;
00080 MythPushButton * finishButton;
00081 MythPushButton * cancelButton;
00082
00083 QGroupBox *helpgroup;
00084 QLabel *help;
00085
00086 QFrame * hbar1, * hbar2;
00087
00088 Page * page( const QWidget * w )
00089 {
00090 if ( !w )
00091 return 0;
00092 int i = pages.count();
00093 while( --i >= 0 && pages.at( i ) && pages.at( i )->w != w ) { }
00094 return i >= 0 ? pages.at( i ) : 0;
00095 }
00096
00097 };
00098
00099 MythWizard::MythWizard(MythMainWindow *parent, const char *name)
00100 : MythDialog(parent, name)
00101 {
00102 d = new MythWizardPrivate();
00103 d->current = 0;
00104 d->ws = new QStackedWidget(this);
00105 d->ws->setObjectName("MythWizard - stacked widget");
00106 d->title = new QLabel(this);
00107 d->ws->setObjectName("MythWizard - title label");
00108
00109
00110 d->nextButton = new MythPushButton( this, "next" );
00111 d->finishButton = new MythPushButton( this, "finish" );
00112 d->backButton = new MythPushButton( this, "back" );
00113 d->cancelButton = new MythPushButton( this, "cancel" );
00114
00115 d->ws->installEventFilter( this );
00116
00117 d->helpgroup = 0;
00118 d->help = 0;
00119 d->v = 0;
00120 d->hbar1 = 0;
00121 d->hbar2 = 0;
00122
00123 d->cancelButton->setText( tr( "&Cancel" ) );
00124 d->backButton->setText( tr( "< &Back" ) );
00125 d->nextButton->setText( tr( "&Next >" ) );
00126 d->finishButton->setText( tr( "&Finish" ) );
00127
00128 d->nextButton->setDefault( TRUE );
00129
00130 connect( d->backButton, SIGNAL(clicked()),
00131 this, SLOT(back()) );
00132 connect( d->nextButton, SIGNAL(clicked()),
00133 this, SLOT(next()) );
00134 connect( d->finishButton, SIGNAL(clicked()),
00135 this, SLOT(accept()) );
00136 connect( d->cancelButton, SIGNAL(clicked()),
00137 this, SLOT(reject()) );
00138 }
00139
00140 MythWizard::~MythWizard()
00141 {
00142 while (!d->pages.empty())
00143 {
00144 delete d->pages.back();
00145 d->pages.pop_back();
00146 }
00147 delete d;
00148 }
00149
00150 void MythWizard::Show()
00151 {
00152 if ( d->current )
00153 showPage( d->current->w );
00154 else if ( pageCount() > 0 )
00155 showPage( d->pages[0]->w );
00156 else
00157 showPage( 0 );
00158
00159 MythDialog::Show();
00160 }
00161
00162 void MythWizard::setFont( const QFont & font )
00163 {
00164 QCoreApplication::postEvent( this, new QEvent( QEvent::LayoutRequest ) );
00165 MythDialog::setFont( font );
00166 }
00167
00168 void MythWizard::addPage( QWidget * page, const QString & title )
00169 {
00170 if ( !page )
00171 return;
00172 if ( d->page( page ) ) {
00173 qWarning( "MythWizard::addPage(): already added %s/%s to %s/%s",
00174 page->metaObject()->className(), qPrintable(page->objectName()),
00175 metaObject()->className(), qPrintable(objectName()) );
00176 return;
00177 }
00178 int i = d->pages.size();
00179
00180 if ( i > 0 )
00181 d->pages[i - 1]->nextEnabled = true;
00182
00183 MythWizardPrivate::Page * p = new MythWizardPrivate::Page( page, title );
00184 p->backEnabled = ( i > 0 );
00185 d->ws->addWidget(page);
00186 d->pages.append( p );
00187 }
00188
00189 void MythWizard::insertPage( QWidget * page, const QString & title, int index )
00190 {
00191 if ( !page )
00192 return;
00193 if ( d->page( page ) ) {
00194 qWarning( "MythWizard::insertPage(): already added %s/%s to %s/%s",
00195 page->metaObject()->className(), qPrintable(page->objectName()),
00196 metaObject()->className(), qPrintable(objectName()) );
00197 return;
00198 }
00199
00200 if ( index < 0 || index > (int)d->pages.size() )
00201 index = d->pages.size();
00202
00203 if ( index > 0 && ( index == (int)d->pages.size() ) )
00204 d->pages[index - 1]->nextEnabled = true;
00205
00206 MythWizardPrivate::Page * p = new MythWizardPrivate::Page( page, title );
00207 p->backEnabled = ( index > 0 );
00208 p->nextEnabled = ( index < (int)d->pages.size() );
00209
00210 d->ws->addWidget(page);
00211 d->pages.insert( index, p );
00212 }
00213
00214 void MythWizard::showPage( QWidget * page )
00215 {
00216 MythWizardPrivate::Page * p = d->page( page );
00217 if ( p ) {
00218 int i;
00219 for( i = 0; i < (int)d->pages.size() && d->pages[i] != p; i++ );
00220 bool notFirst( FALSE );
00221
00222 if (i)
00223 {
00224 i--;
00225 while ((i >= 0) && !notFirst)
00226 {
00227 notFirst |= appropriate(d->pages[i]->w);
00228 i--;
00229 }
00230 }
00231 setBackEnabled( notFirst );
00232 setNextEnabled( TRUE );
00233 d->ws->setCurrentWidget(page);
00234 d->current = p;
00235 }
00236
00237 layOut();
00238 updateButtons();
00239 emit selected( p ? p->t : QString::null );
00240
00241 if (indexOf(page) == pageCount()-1) {
00242
00243 finishButton()->setEnabled(TRUE);
00244 finishButton()->setFocus();
00245 } else {
00246 nextButton()->setFocus();
00247 }
00248 }
00249
00250 int MythWizard::pageCount() const
00251 {
00252 return d->pages.size();
00253 }
00254
00255 int MythWizard::indexOf( QWidget* page ) const
00256 {
00257 MythWizardPrivate::Page * p = d->page( page );
00258 if ( !p ) return -1;
00259
00260 return d->pages.indexOf( p );
00261 }
00262
00263 void MythWizard::back()
00264 {
00265 int i = 0;
00266
00267 while( i < (int)d->pages.size() && d->pages[i] &&
00268 d->current && d->pages[i]->w != d->current->w )
00269 i++;
00270
00271 i--;
00272 while( i >= 0 &&
00273 ( !d->pages[i] || !appropriate( d->pages[i]->w ) ) )
00274 i--;
00275
00276 if ( i >= 0 )
00277 if ( d->pages[i] )
00278 showPage( d->pages[i]->w );
00279 }
00280
00281 void MythWizard::next()
00282 {
00283 int i = 0;
00284 while( i < (int)d->pages.size() && d->pages[i] &&
00285 d->current && d->pages[i]->w != d->current->w )
00286 i++;
00287 i++;
00288 while( i <= (int)d->pages.size()-1 &&
00289 ( !d->pages[i] || !appropriate( d->pages[i]->w ) ) )
00290 i++;
00291 while ( i > 0 && (i >= (int)d->pages.size() || !d->pages[i] ) )
00292 i--;
00293 if ( d->pages[i] )
00294 showPage( d->pages[i]->w );
00295 }
00296
00297 void MythWizard::setBackEnabled( bool enable )
00298 {
00299 d->backButton->setEnabled( enable );
00300 }
00301
00302 void MythWizard::setNextEnabled( bool enable )
00303 {
00304 d->nextButton->setEnabled( enable );
00305 }
00306
00307 void MythWizard::setBackEnabled( QWidget * page, bool enable )
00308 {
00309 MythWizardPrivate::Page * p = d->page( page );
00310 if ( !p )
00311 return;
00312
00313 p->backEnabled = enable;
00314 updateButtons();
00315 }
00316
00317 void MythWizard::setNextEnabled( QWidget * page, bool enable )
00318 {
00319 MythWizardPrivate::Page * p = d->page( page );
00320 if ( !p )
00321 return;
00322
00323 p->nextEnabled = enable;
00324 updateButtons();
00325 }
00326
00327 void MythWizard::setFinishEnabled( QWidget * page, bool enable )
00328 {
00329 MythWizardPrivate::Page * p = d->page( page );
00330 if ( !p )
00331 return;
00332
00333 p->finishEnabled = enable;
00334 updateButtons();
00335 }
00336
00337 bool MythWizard::appropriate( QWidget * page ) const
00338 {
00339 MythWizardPrivate::Page * p = d->page( page );
00340 return p ? p->appropriate : TRUE;
00341 }
00342
00343 void MythWizard::setAppropriate( QWidget * page, bool appropriate )
00344 {
00345 MythWizardPrivate::Page * p = d->page( page );
00346 if ( p )
00347 p->appropriate = appropriate;
00348 }
00349
00350 void MythWizard::updateButtons()
00351 {
00352 if ( !d->current )
00353 return;
00354
00355 int i;
00356 for( i = 0; i < (int)d->pages.size() && d->pages[i] != d->current; i++ );
00357 bool notFirst( FALSE );
00358 if ( i ) {
00359 i--;
00360 while( ( i >= 0 ) && !notFirst ) {
00361 notFirst |= appropriate( d->pages[i]->w );
00362 i--;
00363 }
00364 }
00365 setBackEnabled( d->current->backEnabled && notFirst );
00366 setNextEnabled( d->current->nextEnabled );
00367 d->finishButton->setEnabled( d->current->finishEnabled );
00368
00369 if ( ( d->current->finishEnabled && !d->finishButton->isVisible() ) ||
00370 ( d->current->backEnabled && !d->backButton->isVisible() ) ||
00371 ( d->current->nextEnabled && !d->nextButton->isVisible() ) )
00372 layOut();
00373 }
00374
00375 QWidget * MythWizard::currentPage() const
00376 {
00377 return d->ws->currentWidget();
00378 }
00379
00380 QString MythWizard::title( QWidget * page ) const
00381 {
00382 MythWizardPrivate::Page * p = d->page( page );
00383 return p ? p->t : QString::null;
00384 }
00385
00386 void MythWizard::setTitle( QWidget *page, const QString &title )
00387 {
00388 MythWizardPrivate::Page * p = d->page( page );
00389 if ( p )
00390 p->t = title;
00391 if ( page == currentPage() )
00392 d->title->setText( title );
00393 }
00394
00395 QFont MythWizard::titleFont() const
00396 {
00397 return d->title->font();
00398 }
00399
00400 void MythWizard::setTitleFont( const QFont & font )
00401 {
00402 d->title->setFont( font );
00403 }
00404
00405 MythPushButton * MythWizard::backButton() const
00406 {
00407 return d->backButton;
00408 }
00409
00410 MythPushButton * MythWizard::nextButton() const
00411 {
00412 return d->nextButton;
00413 }
00414
00415 MythPushButton * MythWizard::finishButton() const
00416 {
00417 return d->finishButton;
00418 }
00419
00420 MythPushButton * MythWizard::cancelButton() const
00421 {
00422 return d->cancelButton;
00423 }
00424
00425 void MythWizard::layOutButtonRow( QHBoxLayout * layout )
00426 {
00427 bool hasEarlyFinish = false;
00428
00429 int i = d->pages.size() - 2;
00430 while ( !hasEarlyFinish && i >= 0 )
00431 {
00432 hasEarlyFinish |= (d->pages.at(i) && d->pages.at(i)->finishEnabled);
00433 i--;
00434 }
00435
00436 QHBoxLayout *h = new QHBoxLayout();
00437 h->setSpacing(QBoxLayout::LeftToRight);
00438 layout->addLayout( h );
00439
00440 h->addWidget( d->cancelButton );
00441
00442 h->addStretch( 42 );
00443
00444 h->addWidget( d->backButton );
00445
00446 h->addSpacing( 6 );
00447
00448 if (hasEarlyFinish)
00449 {
00450 d->nextButton->show();
00451 d->finishButton->show();
00452 h->addWidget( d->nextButton );
00453 h->addSpacing( 12 );
00454 h->addWidget( d->finishButton );
00455 }
00456 else if (d->pages.empty() ||
00457 d->current->finishEnabled ||
00458 d->current == d->pages.last())
00459 {
00460 d->nextButton->hide();
00461 d->finishButton->show();
00462 h->addWidget( d->finishButton );
00463 }
00464 else
00465 {
00466 d->nextButton->show();
00467 d->finishButton->hide();
00468 h->addWidget( d->nextButton );
00469 }
00470
00471
00472 i = d->pages.size() - 1;
00473 if (i > 0 && !appropriate(d->pages[i]->w) &&
00474 d->current == d->pages[(uint)(i) - 1])
00475 {
00476 d->nextButton->hide();
00477 d->finishButton->show();
00478 h->addWidget( d->finishButton );
00479 }
00480 }
00481
00482 void MythWizard::layOutTitleRow( QHBoxLayout * layout, const QString & title )
00483 {
00484 d->title->setText( title );
00485 layout->addWidget( d->title, 10 );
00486 }
00487
00488 void MythWizard::layOut()
00489 {
00490 delete d->v;
00491 d->v = new QVBoxLayout( this);
00492 d->v->setMargin(6);
00493 d->v->setSpacing(0);
00494 d->v->setObjectName("top-level layout");
00495
00496 QHBoxLayout * l;
00497 l = new QHBoxLayout();
00498 l->setMargin(6);
00499 d->v->addLayout( l, 0 );
00500 layOutTitleRow( l, d->current ? d->current->t : QString::null );
00501
00502 if ( ! d->hbar1 ) {
00503 d->hbar1 = new QFrame(this, 0);
00504 d->hbar1->setObjectName("MythWizard - hbar1");
00505 d->hbar1->setFrameStyle(QFrame::Sunken | QFrame::HLine);
00506 d->hbar1->setFixedHeight( 12 );
00507 }
00508
00509 d->v->addWidget( d->hbar1 );
00510
00511 d->v->addWidget( d->ws, 10 );
00512
00513 if (!d->helpgroup)
00514 {
00515 d->helpgroup = new QGroupBox(this);
00516 d->helpgroup->setObjectName("MythWizard -- help group box");
00517
00518 d->help = new QLabel(d->helpgroup);
00519 d->help->setObjectName("MythWizard -- help text");
00520
00521 d->help->setAlignment(Qt::AlignLeft | Qt::AlignTop);
00522 d->help->setWordWrap(true);
00523
00524 d->help->setMinimumWidth(screenwidth - (int)(40 * wmult));
00525 d->help->setMaximumHeight((int)(80 * hmult));
00526 d->help->setMinimumHeight((int)(80 * hmult));
00527
00528 QVBoxLayout *helplayout = new QVBoxLayout(d->helpgroup);
00529 helplayout->setMargin(10);
00530 helplayout->addWidget(d->help);
00531 }
00532 else
00533 {
00534 d->help->setText("");
00535 }
00536
00537 d->v->addWidget(d->helpgroup);
00538
00539 if ( ! d->hbar2 ) {
00540 d->hbar2 = new QFrame( this, 0 );
00541 d->hbar2->setObjectName("MythWizard - hbar2");
00542 d->hbar2->setFrameStyle(QFrame::Sunken | QFrame::HLine);
00543 d->hbar2->setFixedHeight( 12 );
00544 }
00545 d->v->addWidget( d->hbar2 );
00546
00547 l = new QHBoxLayout();
00548 l->setMargin(6);
00549 d->v->addLayout( l );
00550 layOutButtonRow( l );
00551 d->v->activate();
00552 }
00553
00554 bool MythWizard::eventFilter( QObject * o, QEvent * e )
00555 {
00556 if ( o == d->ws && e && e->type() == QEvent::ChildRemoved ) {
00557 QChildEvent * c = (QChildEvent*)e;
00558 if ( c->child() && c->child()->isWidgetType() )
00559 removePage( (QWidget *)c->child() );
00560 }
00561 return QWidget::eventFilter( o, e );
00562 }
00563
00564 void MythWizard::keyPressEvent(QKeyEvent* e)
00565 {
00566 bool handled = false;
00567 QStringList actions;
00568 handled = GetMythMainWindow()->TranslateKeyPress("qt", e, actions);
00569
00570 for (int i = 0; i < actions.size() && !handled; i++)
00571 {
00572 QString action = actions[i];
00573 handled = true;
00574
00575 if (action == "SELECT")
00576 {
00577 if (indexOf(currentPage()) == pageCount()-1)
00578 accept();
00579 else
00580 next();
00581 }
00582 else if (action == "ESCAPE")
00583 {
00584 if (indexOf(currentPage()) == 0)
00585 reject();
00586 else
00587 {
00588 back();
00589 QCoreApplication::postEvent(
00590 GetMythMainWindow(),
00591 new QEvent(MythEvent::kExitToMainMenuEventType));
00592 }
00593 }
00594 else
00595 handled = false;
00596 }
00597
00598 if (!handled)
00599 MythDialog::keyPressEvent(e);
00600 }
00601
00602 void MythWizard::removePage( QWidget * page )
00603 {
00604 if ( !page )
00605 return;
00606
00607 int i = d->pages.size();
00608 QWidget* cp = currentPage();
00609 while( --i >= 0 && d->pages[i] && d->pages[i]->w != page ) { }
00610 if ( i < 0 )
00611 return;
00612
00613 MythWizardPrivate::Page *p = d->pages[i];
00614 d->pages.removeAll(p);
00615 delete p;
00616
00617 d->ws->removeWidget(page);
00618
00619 if ( cp == page ) {
00620 i--;
00621 if ( i < 0 )
00622 i = 0;
00623 if ( pageCount() > 0 )
00624 showPage( MythWizard::page( i ) );
00625 }
00626 }
00627
00628 QWidget* MythWizard::page( int index ) const
00629 {
00630 if ( index >= pageCount() || index < 0 )
00631 return 0;
00632
00633 return d->pages[index]->w;
00634 }
00635
00636 void MythWizard::setHelpText(QString helptext)
00637 {
00638 if (!d->help)
00639 return;
00640
00641 d->help->setText(helptext);
00642 d->help->setMinimumWidth(screenwidth - (int)(40 * wmult));
00643 d->help->setMaximumHeight((int)(80 * hmult));
00644 }
