The QScriptClassPropertyIterator class provides an iterator interface for custom Qt Script objects. 更多...
| 頭： | #include <QScriptClassPropertyIterator> |
| qmake: | QT += script |
| Since: | Qt 4.4 |
該類在 Qt 4.4 引入。
| virtual | ~QScriptClassPropertyIterator () |
| virtual QScriptValue::PropertyFlags | flags () const |
| virtual bool | hasNext () const = 0 |
| virtual bool | hasPrevious () const = 0 |
| virtual uint | id () const |
| virtual QScriptString | name () const = 0 |
| virtual void | next () = 0 |
| QScriptValue | object () const |
| virtual void | previous () = 0 |
| virtual void | toBack () = 0 |
| virtual void | toFront () = 0 |
| QScriptClassPropertyIterator (const QScriptValue & object ) |
This class is only relevant if you have subclassed QScriptClass and want to provide enumeration of your custom properties (e.g. when objects of your class are used with QScriptValueIterator , or with the for-in statement in scripts).
The object () function returns the Qt Script object the iterator is traversing.
toFront (), hasNext () 和 next () provide forward iteration.
toBack (), hasPrevious () 和 previous () provide backward iteration.
name (), id () 和 flags () return information about the last property that was jumped over using next () 或 previous ().
另請參閱 QScriptClass::newIterator () 和 QScriptValueIterator .
[protected]
QScriptClassPropertyIterator::
QScriptClassPropertyIterator
(const
QScriptValue
&
object
)
構造迭代器為遍曆 object .
Subclasses should ensure that the iterator is set to the front of the sequence of properties (before the first property).
[虛擬]
QScriptClassPropertyIterator::
~QScriptClassPropertyIterator
()
銷毀迭代器。
[虛擬]
QScriptValue::PropertyFlags
QScriptClassPropertyIterator::
flags
() const
Returns the flags of the last property that was jumped over using next () 或 previous ().
The default implementation calls the propertyFlags() function of object () with argument name ().
[pure virtual]
bool
QScriptClassPropertyIterator::
hasNext
() const
Returns true if there is at least one item ahead of the iterator (i.e. the iterator is not at the back of the property sequence); otherwise returns false.
另請參閱 next () 和 hasPrevious ().
[pure virtual]
bool
QScriptClassPropertyIterator::
hasPrevious
() const
Returns true if there is at least one item behind the iterator (i.e. the iterator is not at the front of the property sequence); otherwise returns false.
另請參閱 previous () 和 hasNext ().
[虛擬]
uint
QScriptClassPropertyIterator::
id
() const
Returns the id of the last property that was jumped over using next () 或 previous ().
The default implementation returns 0.
另請參閱 name ().
[pure virtual]
QScriptString
QScriptClassPropertyIterator::
name
() const
Returns the name of the last property that was jumped over using next () 或 previous ().
另請參閱 id ().
[pure virtual]
void
QScriptClassPropertyIterator::
next
()
Advances the iterator by one position.
Calling this function on an iterator located at the back of the container leads to undefined results.
另請參閱 hasNext (), previous ()，和 name ().
Returns the Qt Script object this iterator is traversing.
[pure virtual]
void
QScriptClassPropertyIterator::
previous
()
Moves the iterator back by one position.
Calling this function on an iterator located at the front of the container leads to undefined results.
另請參閱 hasPrevious (), next ()，和 name ().
[pure virtual]
void
QScriptClassPropertyIterator::
toBack
()
Moves the iterator to the back of the QScriptValue (after the last property).
另請參閱 toFront () 和 previous ().
[pure virtual]
void
QScriptClassPropertyIterator::
toFront
()
Moves the iterator to the front of the QScriptValue (before the first property).