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00022 #include "partmanager.h"
00023 #include <kparts/event.h>
00024 #include <kparts/part.h>
00025 #include <kglobal.h>
00026 #include <kdebug.h>
00027
00028 #include <qapplication.h>
00029
00030
00031
00032 using namespace KParts;
00033
00034 template class QPtrList<Part>;
00035
00036 namespace KParts {
00037
00038 class PartManagerPrivate
00039 {
00040 public:
00041 PartManagerPrivate()
00042 {
00043 m_activeWidget = 0;
00044 m_activePart = 0;
00045 m_selectedPart = 0;
00046 m_selectedWidget = 0;
00047 m_bAllowNestedParts = false;
00048 m_bIgnoreScrollBars = false;
00049 m_activationButtonMask = Qt::LeftButton | Qt::MidButton | Qt::RightButton;
00050 m_reason = PartManager::NoReason;
00051 }
00052 ~PartManagerPrivate()
00053 {
00054 }
00055 void setReason( QEvent* ev ) {
00056 switch( ev->type() ) {
00057 case QEvent::MouseButtonPress:
00058 case QEvent::MouseButtonDblClick: {
00059 QMouseEvent* mev = static_cast<QMouseEvent *>( ev );
00060 m_reason = mev->button() == Qt::LeftButton
00061 ? PartManager::ReasonLeftClick
00062 : ( mev->button() == Qt::MidButton
00063 ? PartManager::ReasonMidClick
00064 : PartManager::ReasonRightClick );
00065 break;
00066 }
00067 case QEvent::FocusIn:
00068 m_reason = static_cast<QFocusEvent *>( ev )->reason();
00069 break;
00070 default:
00071 kdWarning(1000) << "PartManagerPrivate::setReason got unexpected ev type " << ev->type() << endl;
00072 break;
00073 }
00074 }
00075
00076 Part * m_activePart;
00077 QWidget *m_activeWidget;
00078
00079 QPtrList<Part> m_parts;
00080
00081 PartManager::SelectionPolicy m_policy;
00082
00083 Part *m_selectedPart;
00084 QWidget *m_selectedWidget;
00085
00086 QPtrList<QWidget> m_managedTopLevelWidgets;
00087 short int m_activationButtonMask;
00088 bool m_bIgnoreScrollBars;
00089 bool m_bAllowNestedParts;
00090 int m_reason;
00091 };
00092
00093 }
00094
00095 PartManager::PartManager( QWidget * parent, const char * name )
00096 : QObject( parent, name )
00097 {
00098 d = new PartManagerPrivate;
00099
00100 qApp->installEventFilter( this );
00101
00102 d->m_policy = Direct;
00103
00104 addManagedTopLevelWidget( parent );
00105 }
00106
00107 PartManager::PartManager( QWidget *topLevel, QObject *parent, const char *name )
00108 : QObject( parent, name )
00109 {
00110 d = new PartManagerPrivate;
00111
00112 qApp->installEventFilter( this );
00113
00114 d->m_policy = Direct;
00115
00116 addManagedTopLevelWidget( topLevel );
00117 }
00118
00119 PartManager::~PartManager()
00120 {
00121 for ( QPtrListIterator<QWidget> it( d->m_managedTopLevelWidgets );
00122 it.current(); ++it )
00123 disconnect( it.current(), SIGNAL( destroyed() ),
00124 this, SLOT( slotManagedTopLevelWidgetDestroyed() ) );
00125
00126 for ( QPtrListIterator<Part> it( d->m_parts ); it.current(); ++it )
00127 {
00128 it.current()->setManager( 0 );
00129 }
00130
00131
00132 qApp->removeEventFilter( this );
00133 delete d;
00134 }
00135
00136 void PartManager::setSelectionPolicy( SelectionPolicy policy )
00137 {
00138 d->m_policy = policy;
00139 }
00140
00141 PartManager::SelectionPolicy PartManager::selectionPolicy() const
00142 {
00143 return d->m_policy;
00144 }
00145
00146 void PartManager::setAllowNestedParts( bool allow )
00147 {
00148 d->m_bAllowNestedParts = allow;
00149 }
00150
00151 bool PartManager::allowNestedParts() const
00152 {
00153 return d->m_bAllowNestedParts;
00154 }
00155
00156 void PartManager::setIgnoreScrollBars( bool ignore )
00157 {
00158 d->m_bIgnoreScrollBars = ignore;
00159 }
00160
00161 bool PartManager::ignoreScrollBars() const
00162 {
00163 return d->m_bIgnoreScrollBars;
00164 }
00165
00166 void PartManager::setActivationButtonMask( short int buttonMask )
00167 {
00168 d->m_activationButtonMask = buttonMask;
00169 }
00170
00171 short int PartManager::activationButtonMask() const
00172 {
00173 return d->m_activationButtonMask;
00174 }
00175
00176 bool PartManager::eventFilter( QObject *obj, QEvent *ev )
00177 {
00178
00179 if ( ev->type() != QEvent::MouseButtonPress &&
00180 ev->type() != QEvent::MouseButtonDblClick &&
00181 ev->type() != QEvent::FocusIn )
00182 return false;
00183
00184 if ( !obj->isWidgetType() )
00185 return false;
00186
00187 QWidget *w = static_cast<QWidget *>( obj );
00188
00189 if ( ( w->testWFlags( WType_Dialog ) && w->isModal() ) ||
00190 w->testWFlags( WType_Popup ) || w->testWFlags( WStyle_Tool ) )
00191 return false;
00192
00193 QMouseEvent* mev = 0L;
00194 if ( ev->type() == QEvent::MouseButtonPress || ev->type() == QEvent::MouseButtonDblClick )
00195 {
00196 mev = static_cast<QMouseEvent *>( ev );
00197 #ifdef DEBUG_PARTMANAGER
00198 kdDebug(1000) << "PartManager::eventFilter button: " << mev->button() << " " << "d->m_activationButtonMask=" << d->m_activationButtonMask << endl;
00199 #endif
00200 if ( ( mev->button() & d->m_activationButtonMask ) == 0 )
00201 return false;
00202 }
00203
00204 Part * part;
00205 while ( w )
00206 {
00207 QPoint pos;
00208
00209 if ( !d->m_managedTopLevelWidgets.containsRef( w->topLevelWidget() ) )
00210 return false;
00211
00212 if ( d->m_bIgnoreScrollBars && w->inherits( "QScrollBar" ) )
00213 return false;
00214
00215 if ( mev )
00216 {
00217 pos = mev->globalPos();
00218 part = findPartFromWidget( w, pos );
00219 } else
00220 part = findPartFromWidget( w );
00221
00222 #ifdef DEBUG_PARTMANAGER
00223 QCString evType = ( ev->type() == QEvent::MouseButtonPress ) ? "MouseButtonPress"
00224 : ( ev->type() == QEvent::MouseButtonDblClick ) ? "MouseButtonDblClick"
00225 : ( ev->type() == QEvent::FocusIn ) ? "FocusIn" : "OTHER! ERROR!";
00226 #endif
00227 if ( part )
00228 {
00229 if ( d->m_policy == PartManager::TriState )
00230 {
00231 if ( ev->type() == QEvent::MouseButtonDblClick )
00232 {
00233 if ( part == d->m_activePart && w == d->m_activeWidget )
00234 return false;
00235
00236 #ifdef DEBUG_PARTMANAGER
00237 kdDebug(1000) << "PartManager::eventFilter dblclick -> setActivePart" << part << endl;
00238 #endif
00239 d->setReason( ev );
00240 setActivePart( part, w );
00241 d->m_reason = NoReason;
00242 return true;
00243 }
00244
00245 if ( ( d->m_selectedWidget != w || d->m_selectedPart != part ) &&
00246 ( d->m_activeWidget != w || d->m_activePart != part ) )
00247 {
00248 if ( part->isSelectable() )
00249 setSelectedPart( part, w );
00250 else {
00251 #ifdef DEBUG_PARTMANAGER
00252 kdDebug(1000) << "Part " << part << " (non-selectable) made active because " << w->className() << " got event" << " " << evType << endl;
00253 #endif
00254 d->setReason( ev );
00255 setActivePart( part, w );
00256 d->m_reason = NoReason;
00257 }
00258 return true;
00259 }
00260 else if ( d->m_selectedWidget == w && d->m_selectedPart == part )
00261 {
00262 #ifdef DEBUG_PARTMANAGER
00263 kdDebug(1000) << "Part " << part << " made active (from selected) because " << w->className() << " got event" << " " << evType << endl;
00264 #endif
00265 d->setReason( ev );
00266 setActivePart( part, w );
00267 d->m_reason = NoReason;
00268 return true;
00269 }
00270 else if ( d->m_activeWidget == w && d->m_activePart == part )
00271 {
00272 setSelectedPart( 0L );
00273 return false;
00274 }
00275
00276 return false;
00277 }
00278 else if ( part != d->m_activePart )
00279 {
00280 #ifdef DEBUG_PARTMANAGER
00281 kdDebug(1000) << "Part " << part << " made active because " << w->className() << " got event" << " " << evType << endl;
00282 #endif
00283 d->setReason( ev );
00284 setActivePart( part, w );
00285 d->m_reason = NoReason;
00286 }
00287
00288 return false;
00289 }
00290
00291 w = w->parentWidget();
00292
00293 if ( w && ( ( w->testWFlags( WType_Dialog ) && w->isModal() ) ||
00294 w->testWFlags( WType_Popup ) || w->testWFlags( WStyle_Tool ) ) )
00295 {
00296 #ifdef DEBUG_PARTMANAGER
00297 kdDebug(1000) << QString("No part made active although %1/%2 got event - loop aborted").arg(obj->name()).arg(obj->className()) << endl;
00298 #endif
00299 return false;
00300 }
00301
00302 }
00303
00304 #ifdef DEBUG_PARTMANAGER
00305 kdDebug(1000) << QString("No part made active although %1/%2 got event").arg(obj->name()).arg(obj->className()) << endl;
00306 #endif
00307 return false;
00308 }
00309
00310 Part * PartManager::findPartFromWidget( QWidget * widget, const QPoint &pos )
00311 {
00312 QPtrListIterator<Part> it ( d->m_parts );
00313 for ( ; it.current() ; ++it )
00314 {
00315 Part *part = it.current()->hitTest( widget, pos );
00316 if ( part && d->m_parts.findRef( part ) != -1 )
00317 return part;
00318 }
00319 return 0L;
00320 }
00321
00322 Part * PartManager::findPartFromWidget( QWidget * widget )
00323 {
00324 QPtrListIterator<Part> it ( d->m_parts );
00325 for ( ; it.current() ; ++it )
00326 {
00327 if ( widget == it.current()->widget() )
00328 return it.current();
00329 }
00330 return 0L;
00331 }
00332
00333 void PartManager::addPart( Part *part, bool setActive )
00334 {
00335 if ( d->m_parts.findRef( part ) != -1 )
00336 {
00337 #ifdef DEBUG_PARTMANAGER
00338 kdWarning(1000) << k_funcinfo << part << " already added" << kdBacktrace(5) << endl;
00339 #endif
00340 return;
00341 }
00342
00343 d->m_parts.append( part );
00344
00345 part->setManager( this );
00346
00347 if ( setActive )
00348 {
00349 setActivePart( part );
00350 if ( part->widget() )
00351 part->widget()->setFocus();
00352 }
00353
00354
00355 if ( part->widget() && part->widget()->focusPolicy() == QWidget::NoFocus )
00356 {
00357 kdWarning(1000) << "Part '" << part->name() << "' has a widget " << part->widget()->name() << " with a focus policy of NoFocus. It should have at least a ClickFocus policy, for part activation to work well." << endl;
00358 }
00359 if ( part->widget() && part->widget()->focusPolicy() == QWidget::TabFocus )
00360 {
00361 kdWarning(1000) << "Part '" << part->name() << "' has a widget " << part->widget()->name() << " with a focus policy of TabFocus. It should have at least a ClickFocus policy, for part activation to work well." << endl;
00362 }
00363
00364 if ( setActive && part->widget() )
00365 part->widget()->show();
00366 emit partAdded( part );
00367 }
00368
00369 void PartManager::removePart( Part *part )
00370 {
00371 if ( d->m_parts.findRef( part ) == -1 )
00372 {
00373 kdFatal(1000) << QString("Can't remove part %1, not in KPartManager's list.").arg(part->name()) << endl;
00374 return;
00375 }
00376
00377
00378
00379 int nb = d->m_parts.count();
00380 bool ok = d->m_parts.removeRef( part );
00381 Q_ASSERT( ok );
00382 Q_ASSERT( (int)d->m_parts.count() == nb-1 );
00383 part->setManager(0);
00384
00385 emit partRemoved( part );
00386
00387 if ( part == d->m_activePart )
00388 setActivePart( 0 );
00389 if ( part == d->m_selectedPart )
00390 setSelectedPart( 0 );
00391 }
00392
00393 void PartManager::replacePart( Part * oldPart, Part * newPart, bool setActive )
00394 {
00395
00396
00397 if ( d->m_parts.findRef( oldPart ) == -1 )
00398 {
00399 kdFatal(1000) << QString("Can't remove part %1, not in KPartManager's list.").arg(oldPart->name()) << endl;
00400 return;
00401 }
00402
00403 d->m_parts.removeRef( oldPart );
00404 oldPart->setManager(0);
00405
00406 emit partRemoved( oldPart );
00407
00408 addPart( newPart, setActive );
00409 }
00410
00411 void PartManager::setActivePart( Part *part, QWidget *widget )
00412 {
00413 if ( part && d->m_parts.findRef( part ) == -1 )
00414 {
00415 kdWarning( 1000 ) << "PartManager::setActivePart : trying to activate a non-registered part! " << part->name() << endl;
00416 return;
00417 }
00418
00419
00420
00421 if ( part && !d->m_bAllowNestedParts )
00422 {
00423 QObject *parentPart = part->parent();
00424 if ( parentPart && parentPart->inherits( "KParts::Part" ) )
00425 {
00426 KParts::Part *parPart = static_cast<KParts::Part *>( parentPart );
00427 setActivePart( parPart, parPart->widget() );
00428 return;
00429 }
00430 }
00431
00432 #ifdef DEBUG_PARTMANAGER
00433 kdDebug(1000) << "PartManager::setActivePart d->m_activePart=" << d->m_activePart << "<->part=" << part
00434 << " d->m_activeWidget=" << d->m_activeWidget << "<->widget=" << widget << endl;
00435 #endif
00436
00437
00438 if ( d->m_activePart && part && d->m_activePart == part &&
00439 (!widget || d->m_activeWidget == widget) )
00440 return;
00441
00442 KParts::Part *oldActivePart = d->m_activePart;
00443 QWidget *oldActiveWidget = d->m_activeWidget;
00444
00445 setSelectedPart( 0L );
00446
00447 d->m_activePart = part;
00448 d->m_activeWidget = widget;
00449
00450 if ( oldActivePart )
00451 {
00452 KParts::Part *savedActivePart = part;
00453 QWidget *savedActiveWidget = widget;
00454
00455 PartActivateEvent ev( false, oldActivePart, oldActiveWidget );
00456 QApplication::sendEvent( oldActivePart, &ev );
00457 if ( oldActiveWidget )
00458 {
00459 disconnect( oldActiveWidget, SIGNAL( destroyed() ),
00460 this, SLOT( slotWidgetDestroyed() ) );
00461 QApplication::sendEvent( oldActiveWidget, &ev );
00462 }
00463
00464 d->m_activePart = savedActivePart;
00465 d->m_activeWidget = savedActiveWidget;
00466 }
00467
00468 if ( d->m_activePart )
00469 {
00470 if ( !widget )
00471 d->m_activeWidget = part->widget();
00472
00473 PartActivateEvent ev( true, d->m_activePart, d->m_activeWidget );
00474 QApplication::sendEvent( d->m_activePart, &ev );
00475 if ( d->m_activeWidget )
00476 {
00477 connect( d->m_activeWidget, SIGNAL( destroyed() ),
00478 this, SLOT( slotWidgetDestroyed() ) );
00479 QApplication::sendEvent( d->m_activeWidget, &ev );
00480 }
00481 }
00482
00483 setActiveInstance( d->m_activePart ? d->m_activePart->instance() : 0L );
00484
00485 kdDebug(1000) << this << " emitting activePartChanged " << d->m_activePart << endl;
00486 emit activePartChanged( d->m_activePart );
00487 }
00488
00489 void PartManager::setActiveInstance( KInstance * instance )
00490 {
00491
00492 KGlobal::_activeInstance = instance;
00493 }
00494
00495 Part *PartManager::activePart() const
00496 {
00497 return d->m_activePart;
00498 }
00499
00500 QWidget *PartManager::activeWidget() const
00501 {
00502 return d->m_activeWidget;
00503 }
00504
00505 void PartManager::setSelectedPart( Part *part, QWidget *widget )
00506 {
00507 if ( part == d->m_selectedPart && widget == d->m_selectedWidget )
00508 return;
00509
00510 Part *oldPart = d->m_selectedPart;
00511 QWidget *oldWidget = d->m_selectedWidget;
00512
00513 d->m_selectedPart = part;
00514 d->m_selectedWidget = widget;
00515
00516 if ( part && !widget )
00517 d->m_selectedWidget = part->widget();
00518
00519 if ( oldPart )
00520 {
00521 PartSelectEvent ev( false, oldPart, oldWidget );
00522 QApplication::sendEvent( oldPart, &ev );
00523 QApplication::sendEvent( oldWidget, &ev );
00524 }
00525
00526 if ( d->m_selectedPart )
00527 {
00528 PartSelectEvent ev( true, d->m_selectedPart, d->m_selectedWidget );
00529 QApplication::sendEvent( d->m_selectedPart, &ev );
00530 QApplication::sendEvent( d->m_selectedWidget, &ev );
00531 }
00532 }
00533
00534 Part *PartManager::selectedPart() const
00535 {
00536 return d->m_selectedPart;
00537 }
00538
00539 QWidget *PartManager::selectedWidget() const
00540 {
00541 return d->m_selectedWidget;
00542 }
00543
00544 void PartManager::slotObjectDestroyed()
00545 {
00546 kdDebug(1000) << "KPartManager::slotObjectDestroyed()" << endl;
00547 removePart( const_cast<Part *>( static_cast<const Part *>( sender() ) ) );
00548 }
00549
00550 void PartManager::slotWidgetDestroyed()
00551 {
00552 kdDebug(1000) << "KPartsManager::slotWidgetDestroyed()" << endl;
00553 if ( static_cast<const QWidget *>( sender() ) == d->m_activeWidget )
00554 setActivePart( 0L );
00555
00556 }
00557
00558 const QPtrList<Part> *PartManager::parts() const
00559 {
00560 return &d->m_parts;
00561 }
00562
00563 void PartManager::addManagedTopLevelWidget( const QWidget *topLevel )
00564 {
00565 if ( !topLevel->isTopLevel() )
00566 return;
00567
00568 if ( d->m_managedTopLevelWidgets.containsRef( topLevel ) )
00569 return;
00570
00571 d->m_managedTopLevelWidgets.append( topLevel );
00572 connect( topLevel, SIGNAL( destroyed() ),
00573 this, SLOT( slotManagedTopLevelWidgetDestroyed() ) );
00574 }
00575
00576 void PartManager::removeManagedTopLevelWidget( const QWidget *topLevel )
00577 {
00578 if ( !topLevel->isTopLevel() )
00579 return;
00580
00581 if ( d->m_managedTopLevelWidgets.findRef( topLevel ) == -1 )
00582 return;
00583
00584 d->m_managedTopLevelWidgets.remove();
00585 }
00586
00587 void PartManager::slotManagedTopLevelWidgetDestroyed()
00588 {
00589 const QWidget *widget = static_cast<const QWidget *>( sender() );
00590 removeManagedTopLevelWidget( widget );
00591 }
00592
00593 int PartManager::reason() const
00594 {
00595 return d->m_reason;
00596 }
00597
00598 void PartManager::virtual_hook( int, void* )
00599 { }
00600
00601 #include "partmanager.moc"