qitemeditorfactory.cpp

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32****************************************************************************/-
33-
34#include <qplatformdefs.h>-
35#include "qitemeditorfactory.h"-
36#include "qitemeditorfactory_p.h"-
37-
38#ifndef QT_NO_ITEMVIEWS-
39-
40#include <qcombobox.h>-
41#include <qdatetimeedit.h>-
42#include <qlabel.h>-
43#include <qlineedit.h>-
44#include <qspinbox.h>-
45#include <limits.h>-
46#include <float.h>-
47#include <qapplication.h>-
48#include <qdebug.h>-
49-
50QT_BEGIN_NAMESPACE-
51-
52-
53#ifndef QT_NO_COMBOBOX-
54-
55class QBooleanComboBox : public QComboBox-
56{-
57 Q_OBJECT-
58 Q_PROPERTY(bool value READ value WRITE setValue USER true)-
59-
60public:-
61 QBooleanComboBox(QWidget *parent);-
62 void setValue(bool);-
63 bool value() const;-
64};-
65-
66#endif // QT_NO_COMBOBOX-
67-
68-
69#ifndef QT_NO_SPINBOX-
70-
71class QUIntSpinBox : public QSpinBox-
72{-
73 Q_OBJECT-
74 Q_PROPERTY(uint value READ uintValue WRITE setUIntValue NOTIFY uintValueChanged USER true)-
75public:-
76 explicit QUIntSpinBox(QWidget *parent = 0)-
77 : QSpinBox(parent)-
78 {-
79 connect(this, SIGNAL(valueChanged(int)), SIGNAL(uintValueChanged()));-
80 }
never executed: end of block
0
81-
82 uint uintValue()-
83 {-
84 return value();
never executed: return value();
0
85 }-
86-
87 void setUIntValue(uint value_)-
88 {-
89 return setValue(value_);
never executed: return setValue(value_);
0
90 }-
91-
92Q_SIGNALS:-
93 void uintValueChanged();-
94};-
95-
96#endif // QT_NO_SPINBOX-
97-
98/*!-
99 \class QItemEditorFactory-
100 \brief The QItemEditorFactory class provides widgets for editing item data-
101 in views and delegates.-
102 \since 4.2-
103 \ingroup model-view-
104 \inmodule QtWidgets-
105-
106 When editing data in an item view, editors are created and-
107 displayed by a delegate. QItemDelegate, which is the delegate by-
108 default installed on Qt's item views, uses a QItemEditorFactory to-
109 create editors for it. A default unique instance provided by-
110 QItemEditorFactory is used by all item delegates. If you set a-
111 new default factory with setDefaultFactory(), the new factory will-
112 be used by existing and new delegates.-
113-
114 A factory keeps a collection of QItemEditorCreatorBase-
115 instances, which are specialized editors that produce editors-
116 for one particular QVariant data type (All Qt models store-
117 their data in \l{QVariant}s).-
118-
119 \section1 Standard Editing Widgets-
120-
121 The standard factory implementation provides editors for a variety of data-
122 types. These are created whenever a delegate needs to provide an editor for-
123 data supplied by a model. The following table shows the relationship between-
124 types and the standard editors provided.-
125-
126 \table-
127 \header \li Type \li Editor Widget-
128 \row \li bool \li QComboBox-
129 \row \li double \li QDoubleSpinBox-
130 \row \li int \li{1,2} QSpinBox-
131 \row \li unsigned int-
132 \row \li QDate \li QDateEdit-
133 \row \li QDateTime \li QDateTimeEdit-
134 \row \li QPixmap \li QLabel-
135 \row \li QString \li QLineEdit-
136 \row \li QTime \li QTimeEdit-
137 \endtable-
138-
139 Additional editors can be registered with the registerEditor() function.-
140-
141 \sa QItemDelegate, {Model/View Programming}, {Color Editor Factory Example}-
142*/-
143-
144/*!-
145 \fn QItemEditorFactory::QItemEditorFactory()-
146-
147 Constructs a new item editor factory.-
148*/-
149-
150/*!-
151 Creates an editor widget with the given \a parent for the specified \a userType of data,-
152 and returns it as a QWidget.-
153-
154 \sa registerEditor()-
155*/-
156QWidget *QItemEditorFactory::createEditor(int userType, QWidget *parent) const-
157{-
158 QItemEditorCreatorBase *creator = creatorMap.value(userType, 0);-
159 if (!creator) {
!creatorDescription
TRUEnever evaluated
FALSEnever evaluated
0
160 const QItemEditorFactory *dfactory = defaultFactory();-
161 return dfactory == this ? 0 : dfactory->createEditor(userType, parent);
never executed: return dfactory == this ? 0 : dfactory->createEditor(userType, parent);
dfactory == thisDescription
TRUEnever evaluated
FALSEnever evaluated
0
162 }-
163 return creator->createWidget(parent);
never executed: return creator->createWidget(parent);
0
164}-
165-
166/*!-
167 Returns the property name used to access data for the given \a userType of data.-
168*/-
169QByteArray QItemEditorFactory::valuePropertyName(int userType) const-
170{-
171 QItemEditorCreatorBase *creator = creatorMap.value(userType, 0);-
172 if (!creator) {
!creatorDescription
TRUEnever evaluated
FALSEnever evaluated
0
173 const QItemEditorFactory *dfactory = defaultFactory();-
174 return dfactory == this ? QByteArray() : dfactory->valuePropertyName(userType);
never executed: return dfactory == this ? QByteArray() : dfactory->valuePropertyName(userType);
dfactory == thisDescription
TRUEnever evaluated
FALSEnever evaluated
0
175 }-
176 return creator->valuePropertyName();
never executed: return creator->valuePropertyName();
0
177}-
178-
179/*!-
180 Destroys the item editor factory.-
181*/-
182QItemEditorFactory::~QItemEditorFactory()-
183{-
184 //we make sure we delete all the QItemEditorCreatorBase-
185 //this has to be done only once, hence the QSet-
186 QSet<QItemEditorCreatorBase*> set = creatorMap.values().toSet();-
187 qDeleteAll(set);-
188}
never executed: end of block
0
189-
190/*!-
191 Registers an item editor creator specified by \a creator for the given \a userType of data.-
192-
193 \b{Note:} The factory takes ownership of the item editor creator and will destroy-
194 it if a new creator for the same type is registered later.-
195-
196 \sa createEditor()-
197*/-
198void QItemEditorFactory::registerEditor(int userType, QItemEditorCreatorBase *creator)-
199{-
200 QHash<int, QItemEditorCreatorBase *>::iterator it = creatorMap.find(userType);-
201 if (it != creatorMap.end()) {
it != creatorMap.end()Description
TRUEnever evaluated
FALSEnever evaluated
0
202 QItemEditorCreatorBase *oldCreator = it.value();-
203 Q_ASSERT(oldCreator);-
204 creatorMap.erase(it);-
205 if (!creatorMap.values().contains(oldCreator))
!creatorMap.va...ns(oldCreator)Description
TRUEnever evaluated
FALSEnever evaluated
0
206 delete oldCreator; // if it is no more in use we can delete it
never executed: delete oldCreator;
0
207 }
never executed: end of block
0
208-
209 creatorMap[userType] = creator;-
210}
never executed: end of block
0
211-
212class QDefaultItemEditorFactory : public QItemEditorFactory-
213{-
214public:-
215 inline QDefaultItemEditorFactory() {}-
216 QWidget *createEditor(int userType, QWidget *parent) const Q_DECL_OVERRIDE;-
217 QByteArray valuePropertyName(int) const Q_DECL_OVERRIDE;-
218};-
219-
220QWidget *QDefaultItemEditorFactory::createEditor(int userType, QWidget *parent) const-
221{-
222 switch (userType) {-
223#ifndef QT_NO_COMBOBOX-
224 case QVariant::Bool: {
never executed: case QVariant::Bool:
0
225 QBooleanComboBox *cb = new QBooleanComboBox(parent);-
226 cb->setFrame(false);-
227 return cb; }
never executed: return cb;
0
228#endif-
229#ifndef QT_NO_SPINBOX-
230 case QVariant::UInt: {
never executed: case QVariant::UInt:
0
231 QSpinBox *sb = new QUIntSpinBox(parent);-
232 sb->setFrame(false);-
233 sb->setMinimum(0);-
234 sb->setMaximum(INT_MAX);-
235 return sb; }
never executed: return sb;
0
236 case QVariant::Int: {
never executed: case QVariant::Int:
0
237 QSpinBox *sb = new QSpinBox(parent);-
238 sb->setFrame(false);-
239 sb->setMinimum(INT_MIN);-
240 sb->setMaximum(INT_MAX);-
241 return sb; }
never executed: return sb;
0
242#endif-
243#ifndef QT_NO_DATETIMEEDIT-
244 case QVariant::Date: {
never executed: case QVariant::Date:
0
245 QDateTimeEdit *ed = new QDateEdit(parent);-
246 ed->setFrame(false);-
247 return ed; }
never executed: return ed;
0
248 case QVariant::Time: {
never executed: case QVariant::Time:
0
249 QDateTimeEdit *ed = new QTimeEdit(parent);-
250 ed->setFrame(false);-
251 return ed; }
never executed: return ed;
0
252 case QVariant::DateTime: {
never executed: case QVariant::DateTime:
0
253 QDateTimeEdit *ed = new QDateTimeEdit(parent);-
254 ed->setFrame(false);-
255 return ed; }
never executed: return ed;
0
256#endif-
257 case QVariant::Pixmap:
never executed: case QVariant::Pixmap:
0
258 return new QLabel(parent);
never executed: return new QLabel(parent);
0
259#ifndef QT_NO_SPINBOX-
260 case QVariant::Double: {
never executed: case QVariant::Double:
0
261 QDoubleSpinBox *sb = new QDoubleSpinBox(parent);-
262 sb->setFrame(false);-
263 sb->setMinimum(-DBL_MAX);-
264 sb->setMaximum(DBL_MAX);-
265 return sb; }
never executed: return sb;
0
266#endif-
267#ifndef QT_NO_LINEEDIT-
268 case QVariant::String:
never executed: case QVariant::String:
0
269 default: {
never executed: default:
0
270 // the default editor is a lineedit-
271 QExpandingLineEdit *le = new QExpandingLineEdit(parent);-
272 le->setFrame(le->style()->styleHint(QStyle::SH_ItemView_DrawDelegateFrame, 0, le));-
273 if (!le->style()->styleHint(QStyle::SH_ItemView_ShowDecorationSelected, 0, le))
!le->style()->...lected, 0, le)Description
TRUEnever evaluated
FALSEnever evaluated
0
274 le->setWidgetOwnsGeometry(true);
never executed: le->setWidgetOwnsGeometry(true);
0
275 return le; }
never executed: return le;
0
276#else-
277 default:-
278 break;-
279#endif-
280 }-
281 return 0;
dead code: return 0;
-
282}-
283-
284QByteArray QDefaultItemEditorFactory::valuePropertyName(int userType) const-
285{-
286 switch (userType) {-
287#ifndef QT_NO_COMBOBOX-
288 case QVariant::Bool:
never executed: case QVariant::Bool:
0
289 return "currentIndex";
never executed: return "currentIndex";
0
290#endif-
291#ifndef QT_NO_SPINBOX-
292 case QVariant::UInt:
never executed: case QVariant::UInt:
0
293 case QVariant::Int:
never executed: case QVariant::Int:
0
294 case QVariant::Double:
never executed: case QVariant::Double:
0
295 return "value";
never executed: return "value";
0
296#endif-
297#ifndef QT_NO_DATETIMEEDIT-
298 case QVariant::Date:
never executed: case QVariant::Date:
0
299 return "date";
never executed: return "date";
0
300 case QVariant::Time:
never executed: case QVariant::Time:
0
301 return "time";
never executed: return "time";
0
302 case QVariant::DateTime:
never executed: case QVariant::DateTime:
0
303 return "dateTime";
never executed: return "dateTime";
0
304#endif-
305 case QVariant::String:
never executed: case QVariant::String:
0
306 default:
never executed: default:
0
307 // the default editor is a lineedit-
308 return "text";
never executed: return "text";
0
309 }-
310}-
311-
312static QItemEditorFactory *q_default_factory = 0;-
313struct QDefaultFactoryCleaner-
314{-
315 inline QDefaultFactoryCleaner() {}-
316 ~QDefaultFactoryCleaner() { delete q_default_factory; q_default_factory = 0; }
never executed: end of block
0
317};-
318-
319/*!-
320 Returns the default item editor factory.-
321-
322 \sa setDefaultFactory()-
323*/-
324const QItemEditorFactory *QItemEditorFactory::defaultFactory()-
325{-
326 static const QDefaultItemEditorFactory factory;-
327 if (q_default_factory)
q_default_factoryDescription
TRUEnever evaluated
FALSEnever evaluated
0
328 return q_default_factory;
never executed: return q_default_factory;
0
329 return &factory;
never executed: return &factory;
0
330}-
331-
332/*!-
333 Sets the default item editor factory to the given \a factory.-
334 Both new and existing delegates will use the new factory.-
335-
336 \sa defaultFactory()-
337*/-
338void QItemEditorFactory::setDefaultFactory(QItemEditorFactory *factory)-
339{-
340 static const QDefaultFactoryCleaner cleaner;-
341 delete q_default_factory;-
342 q_default_factory = factory;-
343}
never executed: end of block
0
344-
345/*!-
346 \class QItemEditorCreatorBase-
347 \brief The QItemEditorCreatorBase class provides an abstract base class that-
348 must be subclassed when implementing new item editor creators.-
349 \since 4.2-
350 \ingroup model-view-
351 \inmodule QtWidgets-
352-
353 QItemEditorCreatorBase objects are specialized widget factories that-
354 provide editor widgets for one particular QVariant data type. They-
355 are used by QItemEditorFactory to create editors for-
356 \l{QItemDelegate}s. Creator bases must be registered with-
357 QItemEditorFactory::registerEditor().-
358-
359 An editor should provide a user property for the data it edits.-
360 QItemDelagates can then access the property using Qt's-
361 \l{Meta-Object System}{meta-object system} to set and retrieve the-
362 editing data. A property is set as the user property with the USER-
363 keyword:-
364-
365 \snippet code/src_gui_itemviews_qitemeditorfactory.cpp 0-
366-
367 If the editor does not provide a user property, it must return the-
368 name of the property from valuePropertyName(); delegates will then-
369 use the name to access the property. If a user property exists,-
370 item delegates will not call valuePropertyName().-
371-
372 QStandardItemEditorCreator is a convenience template class that can be used-
373 to register widgets without the need to subclass QItemEditorCreatorBase.-
374-
375 \sa QStandardItemEditorCreator, QItemEditorFactory,-
376 {Model/View Programming}, {Color Editor Factory Example}-
377*/-
378-
379/*!-
380 \fn QItemEditorCreatorBase::~QItemEditorCreatorBase()-
381-
382 Destroys the editor creator object.-
383*/-
384QItemEditorCreatorBase::~QItemEditorCreatorBase()-
385{-
386-
387}-
388-
389/*!-
390 \fn QWidget *QItemEditorCreatorBase::createWidget(QWidget *parent) const-
391-
392 Returns an editor widget with the given \a parent.-
393-
394 When implementing this function in subclasses of this class, you must-
395 construct and return new editor widgets with the parent widget specified.-
396*/-
397-
398/*!-
399 \fn QByteArray QItemEditorCreatorBase::valuePropertyName() const-
400-
401 Returns the name of the property used to get and set values in the creator's-
402 editor widgets.-
403-
404 When implementing this function in subclasses, you must ensure that the-
405 editor widget's property specified by this function can accept the type-
406 the creator is registered for. For example, a creator which constructs-
407 QCheckBox widgets to edit boolean values would return the-
408 \l{QCheckBox::checkable}{checkable} property name from this function,-
409 and must be registered in the item editor factory for the QVariant::Bool-
410 type.-
411-
412 Note: Since Qt 4.2 the item delegates query the user property of widgets,-
413 and only call this function if the widget has no user property. You can-
414 override this behavior by reimplementing QAbstractItemDelegate::setModelData()-
415 and QAbstractItemDelegate::setEditorData().-
416-
417 \sa QMetaObject::userProperty(), QItemEditorFactory::registerEditor()-
418*/-
419-
420/*!-
421 \class QItemEditorCreator-
422 \brief The QItemEditorCreator class makes it possible to create-
423 item editor creator bases without subclassing-
424 QItemEditorCreatorBase.-
425-
426 \since 4.2-
427 \ingroup model-view-
428 \inmodule QtWidgets-
429-
430 QItemEditorCreator is a convenience template class. It uses-
431 the template class to create editors for QItemEditorFactory.-
432 This way, it is not necessary to subclass-
433 QItemEditorCreatorBase.-
434-
435 \snippet code/src_gui_itemviews_qitemeditorfactory.cpp 1-
436-
437 The constructor takes the name of the property that contains the-
438 editing data. QItemDelegate can then access the property by name-
439 when it sets and retrieves editing data. Only use this class if-
440 your editor does not define a user property (using the USER-
441 keyword in the Q_PROPERTY macro). If the widget has a user-
442 property, you should use QStandardItemEditorCreator instead.-
443-
444 \sa QItemEditorCreatorBase, QStandardItemEditorCreator,-
445 QItemEditorFactory, {Color Editor Factory Example}-
446*/-
447-
448/*!-
449 \fn QItemEditorCreator::QItemEditorCreator(const QByteArray &valuePropertyName)-
450-
451 Constructs an editor creator object using \a valuePropertyName-
452 as the name of the property to be used for editing. The-
453 property name is used by QItemDelegate when setting and-
454 getting editor data.-
455-
456 Note that the \a valuePropertyName is only used if the editor-
457 widget does not have a user property defined.-
458*/-
459-
460/*!-
461 \fn QWidget *QItemEditorCreator::createWidget(QWidget *parent) const-
462 \reimp-
463*/-
464-
465/*!-
466 \fn QByteArray QItemEditorCreator::valuePropertyName() const-
467 \reimp-
468*/-
469-
470/*!-
471 \class QStandardItemEditorCreator-
472-
473 \brief The QStandardItemEditorCreator class provides the-
474 possibility to register widgets without having to subclass-
475 QItemEditorCreatorBase.-
476-
477 \since 4.2-
478 \ingroup model-view-
479 \inmodule QtWidgets-
480-
481 This convenience template class makes it possible to register widgets without-
482 having to subclass QItemEditorCreatorBase.-
483-
484 Example:-
485-
486 \snippet code/src_gui_itemviews_qitemeditorfactory.cpp 2-
487-
488 Setting the \c editorFactory created above in an item delegate via-
489 QItemDelegate::setItemEditorFactory() makes sure that all values of type-
490 QVariant::DateTime will be edited in \c{MyFancyDateTimeEdit}.-
491-
492 The editor must provide a user property that will contain the-
493 editing data. The property is used by \l{QItemDelegate}s to set-
494 and retrieve the data (using Qt's \l{Meta-Object-
495 System}{meta-object system}). You set the user property with-
496 the USER keyword:-
497-
498 \snippet code/src_gui_itemviews_qitemeditorfactory.cpp 3-
499-
500 \sa QItemEditorCreatorBase, QItemEditorCreator,-
501 QItemEditorFactory, QItemDelegate, {Color Editor Factory Example}-
502*/-
503-
504/*!-
505 \fn QStandardItemEditorCreator::QStandardItemEditorCreator()-
506-
507 Constructs an editor creator object.-
508*/-
509-
510/*!-
511 \fn QWidget *QStandardItemEditorCreator::createWidget(QWidget *parent) const-
512 \reimp-
513*/-
514-
515/*!-
516 \fn QByteArray QStandardItemEditorCreator::valuePropertyName() const-
517 \reimp-
518*/-
519-
520#ifndef QT_NO_LINEEDIT-
521-
522QExpandingLineEdit::QExpandingLineEdit(QWidget *parent)-
523 : QLineEdit(parent), originalWidth(-1), widgetOwnsGeometry(false)-
524{-
525 connect(this, SIGNAL(textChanged(QString)), this, SLOT(resizeToContents()));-
526 updateMinimumWidth();-
527}
never executed: end of block
0
528-
529void QExpandingLineEdit::changeEvent(QEvent *e)-
530{-
531 switch (e->type())-
532 {-
533 case QEvent::FontChange:
never executed: case QEvent::FontChange:
0
534 case QEvent::StyleChange:
never executed: case QEvent::StyleChange:
0
535 case QEvent::ContentsRectChange:
never executed: case QEvent::ContentsRectChange:
0
536 updateMinimumWidth();-
537 break;
never executed: break;
0
538 default:
never executed: default:
0
539 break;
never executed: break;
0
540 }-
541-
542 QLineEdit::changeEvent(e);-
543}
never executed: end of block
0
544-
545void QExpandingLineEdit::updateMinimumWidth()-
546{-
547 int left, right;-
548 getTextMargins(&left, 0, &right, 0);-
549 int width = left + right + 4 /*horizontalMargin in qlineedit.cpp*/;-
550 getContentsMargins(&left, 0, &right, 0);-
551 width += left + right;-
552-
553 QStyleOptionFrame opt;-
554 initStyleOption(&opt);-
555-
556 int minWidth = style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(width, 0).-
557 expandedTo(QApplication::globalStrut()), this).width();-
558 setMinimumWidth(minWidth);-
559}
never executed: end of block
0
560-
561void QExpandingLineEdit::resizeToContents()-
562{-
563 int oldWidth = width();-
564 if (originalWidth == -1)
originalWidth == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
565 originalWidth = oldWidth;
never executed: originalWidth = oldWidth;
0
566 if (QWidget *parent = parentWidget()) {
QWidget *paren...parentWidget()Description
TRUEnever evaluated
FALSEnever evaluated
0
567 QPoint position = pos();-
568 int hintWidth = minimumWidth() + fontMetrics().width(displayText());-
569 int parentWidth = parent->width();-
570 int maxWidth = isRightToLeft() ? position.x() + oldWidth : parentWidth - position.x();
isRightToLeft()Description
TRUEnever evaluated
FALSEnever evaluated
0
571 int newWidth = qBound(originalWidth, hintWidth, maxWidth);-
572 if (widgetOwnsGeometry)
widgetOwnsGeometryDescription
TRUEnever evaluated
FALSEnever evaluated
0
573 setMaximumWidth(newWidth);
never executed: setMaximumWidth(newWidth);
0
574 if (isRightToLeft())
isRightToLeft()Description
TRUEnever evaluated
FALSEnever evaluated
0
575 move(position.x() - newWidth + oldWidth, position.y());
never executed: move(position.x() - newWidth + oldWidth, position.y());
0
576 resize(newWidth, height());-
577 }
never executed: end of block
0
578}
never executed: end of block
0
579-
580#endif // QT_NO_LINEEDIT-
581-
582#ifndef QT_NO_COMBOBOX-
583-
584QBooleanComboBox::QBooleanComboBox(QWidget *parent)-
585 : QComboBox(parent)-
586{-
587 addItem(QComboBox::tr("False"));-
588 addItem(QComboBox::tr("True"));-
589}
never executed: end of block
0
590-
591void QBooleanComboBox::setValue(bool value)-
592{-
593 setCurrentIndex(value ? 1 : 0);-
594}
never executed: end of block
0
595-
596bool QBooleanComboBox::value() const-
597{-
598 return (currentIndex() == 1);
never executed: return (currentIndex() == 1);
0
599}-
600-
601#endif // QT_NO_COMBOBOX-
602-
603QT_END_NAMESPACE-
604-
605#if !defined(QT_NO_LINEEDIT) || !defined(QT_NO_COMBOBOX)-
606#include "qitemeditorfactory.moc"-
607#endif-
608-
609#include "moc_qitemeditorfactory_p.cpp"-
610-
611#endif // QT_NO_ITEMVIEWS-
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