QScriptDebuggerLocalsItemDelegate Class Reference

Inheritance diagram for QScriptDebuggerLocalsItemDelegate:

Public Functions
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Returns the widget used to edit the item specified by index for editing. More...
bool	eventFilter (QObject *watched, QEvent *event)
	Returns true if the given editor is a valid QWidget and the given event is handled; otherwise returns false. More...
void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Renders the delegate using the given painter and style option for the item specified by index. More...
	QScriptDebuggerLocalsItemDelegate (QObject *parent=0)
void	setModelData (QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
	Gets data from the editor widget and stores it in the specified model at the item index. More...
Public Functions inherited from QStyledItemDelegate
virtual QString	displayText (const QVariant &value, const QLocale &locale) const
	This function returns the string that the delegate will use to display the Qt::DisplayRole of the model in locale. More...
QItemEditorFactory *	itemEditorFactory () const
	Returns the editor factory used by the item delegate. More...
	QStyledItemDelegate (QObject *parent=0)
	Constructs an item delegate with the given parent. More...
void	setEditorData (QWidget *editor, const QModelIndex &index) const
	Sets the data to be displayed and edited by the editor from the data model item specified by the model index. More...
void	setItemEditorFactory (QItemEditorFactory *factory)
	Sets the editor factory to be used by the item delegate to be the factory specified. More...
QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const
	Returns the size needed by the delegate to display the item specified by index, taking into account the style information provided by option. More...
void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Updates the editor for the item specified by index according to the style option given. More...
	~QStyledItemDelegate ()
	Destroys the item delegate. More...
Public Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObject *parent=0)
	Creates a new abstract item delegate with the given parent. More...
virtual	~QAbstractItemDelegate ()
	Destroys the abstract item delegate. More...
Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
const QObjectList &	children () const
	Returns a list of child objects. More...
bool	connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
bool	disconnect (const QObject *receiver, const char *member=0)
void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...
void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...
QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...
virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
template<typename T >
QList< T >	findChildren (const QRegExp &re) const
bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...
bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...
void	killTimer (int id)
	Kills the timer with timer identifier, id. More...
virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...
void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...
QString	objectName () const
QObject *	parent () const
	Returns a pointer to the parent object. More...
QVariant	property (const char *name) const
	Returns the value of the object's name property. More...
Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...
void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...
void	setObjectName (const QString &name)
void	setParent (QObject *)
	Makes the object a child of parent. More...
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...
void	setUserData (uint id, QObjectUserData *data)
bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...
int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
QThread *	thread () const
	Returns the thread in which the object lives. More...
QObjectUserData *	userData (uint id) const
virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Private Slots
void	validateInput (const QString &text)

Static Private Functions
static const QWidget *	widget (const QStyleOptionViewItem &option)

Additional Inherited Members
Public Types inherited from QAbstractItemDelegate
enum	EndEditHint {   NoHint, EditNextItem, EditPreviousItem, SubmitModelCache,   RevertModelCache }
	This enum describes the different hints that the delegate can give to the model and view components to make editing data in a model a comfortable experience for the user. More...
Public Slots inherited from QAbstractItemDelegate
bool	helpEvent (QHelpEvent *event, QAbstractItemView *view, const QStyleOptionViewItem &option, const QModelIndex &index)
	Whenever a help event occurs, this function is called with the event view option and the index that corresponds to the item where the event occurs. More...
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...
Signals inherited from QAbstractItemDelegate
void	closeEditor (QWidget *editor, QAbstractItemDelegate::EndEditHint hint=NoHint)
	This signal is emitted when the user has finished editing an item using the specified editor. More...
void	commitData (QWidget *editor)
	This signal must be emitted when the editor widget has completed editing the data, and wants to write it back into the model. More...
void	sizeHintChanged (const QModelIndex &)
	This signal must be emitted when the sizeHint() of index changed. More...
Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
Static Public Functions inherited from QAbstractItemDelegate
static QString	elidedText (const QFontMetrics &fontMetrics, int width, Qt::TextElideMode mode, const QString &text)
	Use QFontMetrics::elidedText() instead. More...
Static Public Functions inherited from QObject
static bool	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
static bool	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
static bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	Disconnects signal in object sender from method in object receiver. More...
static bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static uint	registerUserData ()
static QString	tr (const char *sourceText, const char *comment=0, int n=-1)
static QString	trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...
Protected Functions inherited from QStyledItemDelegate
bool	editorEvent (QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
	Reimplemented Function More...
virtual void	initStyleOption (QStyleOptionViewItem *option, const QModelIndex &index) const
	Initialize option with the values using the index index. More...
Protected Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObjectPrivate &, QObject *parent=0)
	Creates a new abstract item delegate with the given parent. More...
Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...
virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...
virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...
virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...
	QObject (QObjectPrivate &dd, QObject *parent=0)
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
int	senderSignalIndex () const
virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject
Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()
T *	qobject_cast (QObject *object)
	QObjectList
void *	qt_find_obj_child (QObject *parent, const char *type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 193 of file qscriptdebuggerlocalswidget.cpp.

Constructors and Destructors

QScriptDebuggerLocalsItemDelegate()

QScriptDebuggerLocalsItemDelegate::QScriptDebuggerLocalsItemDelegate

(

QObject *

parent = 0

)

Definition at line 236 of file qscriptdebuggerlocalswidget.cpp.

    : QStyledItemDelegate(parent)
{
}

Functions

createEditor()

QWidget * QScriptDebuggerLocalsItemDelegate::createEditor ( QWidget *  parent, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

virtual

Returns the widget used to edit the item specified by index for editing.

The parent widget and style option are used to control how the editor widget appears.

See also

QAbstractItemDelegate::createEditor()

Reimplemented from QStyledItemDelegate.

Definition at line 242 of file qscriptdebuggerlocalswidget.cpp.

{
    QWidget *editor = QStyledItemDelegate::createEditor(parent, option, index);
    if (index.column() == 1) {
        // value
        QLineEdit *le = qobject_cast<QLineEdit*>(editor);
        if (le) {
            QObject::connect(le, SIGNAL(textEdited(QString)),
                             this, SLOT(validateInput(QString)));
        }
    }
    return editor;
}

eventFilter()

bool QScriptDebuggerLocalsItemDelegate::eventFilter ( QObject *  editor, QEvent *  event  )

virtual

Returns true if the given editor is a valid QWidget and the given event is handled; otherwise returns false.

The following key press events are handled by default:

• Tab
• Backtab
• Enter
• Return
• Esc

In the case of Tab, Backtab, Enter and Return key press events, the editor's data is comitted to the model and the editor is closed. If the event is a Tab key press the view will open an editor on the next item in the view. Likewise, if the event is a Backtab key press the view will open an editor on the previous item in the view.

If the event is a Esc key press event, the editor is closed without committing its data.

See also

commitData(), closeEditor()

Reimplemented from QStyledItemDelegate.

Definition at line 258 of file qscriptdebuggerlocalswidget.cpp.

{
    QLineEdit *le = qobject_cast<QLineEdit*>(watched);
    if (!le)
        return QStyledItemDelegate::eventFilter(watched, event);

    QScriptDebuggerLocalsWidget *localsWidget = qobject_cast<QScriptDebuggerLocalsWidget*>(parent());
    Q_ASSERT(localsWidget != 0);
    QScriptDebuggerLocalsWidgetPrivate *lvp =
        reinterpret_cast<QScriptDebuggerLocalsWidgetPrivate*>(
            QScriptDebuggerLocalsWidgetPrivate::get(localsWidget));

    if ((event->type() == QEvent::FocusIn) && lvp->completingEditor) {
        // because QLineEdit insists on being difficult...
        return true;
    }

    if (event->type() != QEvent::KeyPress)
        return QStyledItemDelegate::eventFilter(watched, event);
    QKeyEvent *ke = static_cast<QKeyEvent*>(event);
    if ((ke->key() == Qt::Key_Enter) || (ke->key() == Qt::Key_Return)) {
        if (QScriptEngine::checkSyntax(le->text()).state() != QScriptSyntaxCheckResult::Valid) {
            // ignore when script contains syntax error
            return true;
        }
    }
    if (ke->key() != Qt::Key_Tab)
        return QStyledItemDelegate::eventFilter(watched, event);

    // trigger completion
    lvp->complete(le);
    return true;
}

paint()

void QScriptDebuggerLocalsItemDelegate::paint ( QPainter *  painter, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

virtual

Renders the delegate using the given painter and style option for the item specified by index.

This function paints the item using the view's QStyle.

When reimplementing paint in a subclass. Use the initStyleOption() to set up the option in the same way as the QStyledItemDelegate; the option will always be an instance of QStyleOptionViewItemV4. Please see its class description for information on its contents.

Whenever possible, use the option while painting. Especially its QStyleOption::rect variable to decide where to draw and its QStyleOption::state to determine if it is enabled or selected.

After painting, you should ensure that the painter is returned to its the state it was supplied in when this function was called. For example, it may be useful to call QPainter::save() before painting and QPainter::restore() afterwards.

See also

QItemDelegate::paint(), QStyle::drawControl(), QStyle::CE_ItemViewItem

Reimplemented from QStyledItemDelegate.

Definition at line 305 of file qscriptdebuggerlocalswidget.cpp.

{
    QStyledItemDelegate::paint(painter, option, index);
#if 0
    QModelIndex parent = index.parent();
    if (parent.isValid()) {
        QStyledItemDelegate::paint(painter, option, index);
    } else {
        // this is a top-level item.
        const QTreeView *view = qobject_cast<const QTreeView*>(widget(option));
        Q_ASSERT(view != 0);

        QStyleOptionButton buttonOption;

        buttonOption.state = option.state;
#ifdef Q_WS_MAC
        buttonOption.state |= QStyle::State_Raised;
#endif
        buttonOption.state &= ~QStyle::State_HasFocus;

        buttonOption.rect = option.rect;
        buttonOption.palette = option.palette;
        buttonOption.features = QStyleOptionButton::None;
        view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, view);

        QStyleOption branchOption;
        static const int i = 9; // ### hardcoded in qcommonstyle.cpp
        QRect r = option.rect;
        branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
        branchOption.palette = option.palette;
        branchOption.state = QStyle::State_Children;

        if (view->isExpanded(index))
            branchOption.state |= QStyle::State_Open;

        view->style()->drawPrimitive(QStyle::PE_IndicatorBranch, &branchOption, painter, view);

        // draw text
        QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
        QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle, 
            index.data(Qt::DisplayRole).toString());
        view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
                                    option.palette, view->isEnabled(), text);
    }
#endif
}

setModelData()

void QScriptDebuggerLocalsItemDelegate::setModelData ( QWidget *  editor, QAbstractItemModel *  model, const QModelIndex &  index  ) const

virtual

Gets data from the editor widget and stores it in the specified model at the item index.

The default implementation gets the value to be stored in the data model from the editor widget's Qt's Property System.

See also

QMetaProperty::isUser()

Reimplemented from QStyledItemDelegate.

Definition at line 292 of file qscriptdebuggerlocalswidget.cpp.

{
    if (index.column() == 1) {
        // check that the syntax is OK
        QString expression = qobject_cast<QLineEdit*>(editor)->text();
        if (QScriptEngine::checkSyntax(expression).state() != QScriptSyntaxCheckResult::Valid)
            return;
    }
    QStyledItemDelegate::setModelData(editor, model, index);
}

validateInput

void QScriptDebuggerLocalsItemDelegate::validateInput ( const QString &  text )

inlineprivateslot

Definition at line 207 of file qscriptdebuggerlocalswidget.cpp.

Referenced by createEditor().

    {
        QWidget *editor = qobject_cast<QWidget*>(sender());
        QPalette pal = editor->palette();
        QColor col;
        bool ok = (QScriptEngine::checkSyntax(text).state() == QScriptSyntaxCheckResult::Valid);
        if (ok) {
            col = Qt::white;
        } else {
            QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax(
                text + QLatin1Char('\n'));
            if (result.state() == QScriptSyntaxCheckResult::Intermediate)
                col = QColor(255, 240, 192);
            else
                col = QColor(255, 102, 102);
        }
        pal.setColor(QPalette::Active, QPalette::Base, col);
        editor->setPalette(pal);
    }

widget()

static const QWidget* QScriptDebuggerLocalsItemDelegate::widget ( const QStyleOptionViewItem &  option )

inlinestaticprivate

Definition at line 228 of file qscriptdebuggerlocalswidget.cpp.

Referenced by paint().

    {
        if (const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3 *>(&option))
            return v3->widget;
        return 0;
    }

---

The documentation for this class was generated from the following file:

• /src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp