propertyeditor.cpp

Trolltech公司发布的基于C++图形开发环境

int PropertyItem::currentIntItemFromObject() const
{
    return -1;
}

QString PropertyItem::currentItemFromObject() const
{
    return QString::null;
}

void PropertyItem::setFocus( QWidget *w )
{
    QWorkspace *ws = 0;
    QWidget *wid = listview->propertyEditor();
    while ( wid ) {
	if ( wid->inherits( "QWorkspace" ) )
	    break;
	wid = wid->parentWidget();
    }
    if ( !wid )
	return;
    ws = (QWorkspace*)wid;
    if ( ws->activeWindow() == listview->propertyEditor() )
	w->setFocus();
}

// --------------------------------------------------------------

PropertyTextItem::PropertyTextItem( PropertyList *l, PropertyItem *after, PropertyItem *prop,
				    const QString &propName, bool comment, bool multiLine, bool ascii, bool a )
    : PropertyItem( l, after, prop, propName ), withComment( comment ),
      hasMultiLines( multiLine ), asciiOnly( ascii ), accel( a )
{
    lin = 0;
    box = 0;
}

QLineEdit *PropertyTextItem::lined()
{
    if ( lin )
	return lin;
    if ( hasMultiLines ) {
	box = new QHBox( listview->viewport() );
	box->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	box->setLineWidth( 2 );
	box->hide();
    }

    lin = 0;
    if ( hasMultiLines )
	lin = new QLineEdit( box );
    else
	lin = new QLineEdit( listview->viewport() );

    if ( asciiOnly )
	lin->setValidator( new AsciiValidator( lin, "ascii_validator" ) );
    if ( !hasMultiLines ) {
	lin->hide();
    } else {
	button = new QPushButton( tr("..."), box );
	button->setFixedWidth( 20 );
	connect( button, SIGNAL( clicked() ),
		 this, SLOT( getText() ) );
	lin->setFrame( FALSE );
    }
    connect( lin, SIGNAL( returnPressed() ),
	     this, SLOT( setValue() ) );
    connect( lin, SIGNAL( textChanged( const QString & ) ),
	     this, SLOT( setValue() ) );
    if ( PropertyItem::name() == "name" )
	connect( lin, SIGNAL( returnPressed() ),
		 listview->propertyEditor()->formWindow()->commandHistory(),
		 SLOT( checkCompressedCommand() ) );
    lin->installEventFilter( listview );
    return lin;
}

PropertyTextItem::~PropertyTextItem()
{
    delete (QLineEdit*)lin;
    lin = 0;
    delete (QHBox*)box;
    box = 0;
}

void PropertyTextItem::setChanged( bool b, bool updateDb )
{
    PropertyItem::setChanged( b, updateDb );
    if ( withComment && childCount() > 0 )
	( (PropertyTextItem*)PropertyItem::child( 0 ) )->lined()->setEnabled( b );
}

bool PropertyTextItem::hasSubItems() const
{
    return withComment;
}

void PropertyTextItem::childValueChanged( PropertyItem *child )
{
    MetaDataBase::setPropertyComment( listview->propertyEditor()->widget(), PropertyItem::name(), child->value().toString() );
}

static QString to_string( const QVariant &v, bool accel )
{
    if ( !accel )
	return v.toString();
    return QAccel::keyToString( v.toInt() );
}

void PropertyTextItem::showEditor()
{
    PropertyItem::showEditor();
    if ( !lin ) {
	lined()->blockSignals( TRUE );
	lined()->setText( to_string( value(), accel ) );
	lined()->blockSignals( FALSE );
    }
    QWidget* w;
    if ( hasMultiLines )
	w = box;
    else
	w= lined();

    placeEditor( w );
    if ( !w->isVisible() || !lined()->hasFocus() ) {
	w->show();
	setFocus( lined() );
    }
}

void PropertyTextItem::createChildren()
{
    PropertyTextItem *i = new PropertyTextItem( listview, this, this, tr( "comment" ), FALSE, FALSE );
    i->lined()->setEnabled( isChanged() );
    addChild( i );
}

void PropertyTextItem::initChildren()
{
    if ( !childCount() )
	return;
    PropertyItem *item = PropertyItem::child( 0 );
    if ( item )
	item->setValue( MetaDataBase::propertyComment( listview->propertyEditor()->widget(), PropertyItem::name() ) );
}

void PropertyTextItem::hideEditor()
{
    PropertyItem::hideEditor();
    QWidget* w;
    if ( hasMultiLines )
	w = box;
    else
	w = lined();

    w->hide();
}

void PropertyTextItem::setValue( const QVariant &v )
{
    if ( ( !hasSubItems() || !isOpen() )
	 && value() == v )
	return;
    if ( lin ) {
	lined()->blockSignals( TRUE );
	int oldCursorPos;
	oldCursorPos = lin->cursorPosition();
	lined()->setText( to_string( v, accel ) );
	lin->setCursorPosition( oldCursorPos );
	lined()->blockSignals( FALSE );
    }
    setText( 1, to_string( v, accel ) );
    PropertyItem::setValue( v );
}

void PropertyTextItem::setValue()
{
    setText( 1, lined()->text() );
    QVariant v;
    if ( accel )
	v = QAccel::stringToKey( lined()->text() );
    else
	v = lined()->text();
    PropertyItem::setValue( v );
    notifyValueChange();
}

void PropertyTextItem::getText()
{
    QString txt = TextEditor::getText( listview, value().toString() );
    if ( !txt.isEmpty() ) {
	setText( 1, txt );
	PropertyItem::setValue( txt );
	notifyValueChange();
	lined()->blockSignals( TRUE );
	lined()->setText( txt );
	lined()->blockSignals( FALSE );
    }
}

// --------------------------------------------------------------

PropertyBoolItem::PropertyBoolItem( PropertyList *l, PropertyItem *after, PropertyItem *prop, const QString &propName )
    : PropertyItem( l, after, prop, propName )
{
    comb = 0;
}

QComboBox *PropertyBoolItem::combo()
{
    if ( comb )
	return comb;
    comb = new QComboBox( FALSE, listview->viewport() );
    comb->hide();
    comb->insertItem( tr( "False" ) );
    comb->insertItem( tr( "True" ) );
    connect( comb, SIGNAL( activated( int ) ),
	     this, SLOT( setValue() ) );
    comb->installEventFilter( listview );
    return comb;
}

PropertyBoolItem::~PropertyBoolItem()
{
    delete (QComboBox*)comb;
    comb = 0;
}

void PropertyBoolItem::toggle()
{
    bool b = value().toBool();
    setValue( QVariant( !b, 0 ) );
    setValue();
}

void PropertyBoolItem::showEditor()
{
    PropertyItem::showEditor();
    if ( !comb ) {
	combo()->blockSignals( TRUE );
	if ( value().toBool() )
	    combo()->setCurrentItem( 1 );
	else
	    combo()->setCurrentItem( 0 );
	combo()->blockSignals( FALSE );
    }
    placeEditor( combo() );
    if ( !combo()->isVisible()  || !combo()->hasFocus() ) {
	combo()->show();
	setFocus( combo() );
    }
}

void PropertyBoolItem::hideEditor()
{
    PropertyItem::hideEditor();
    combo()->hide();
}

void PropertyBoolItem::setValue( const QVariant &v )
{
    if ( ( !hasSubItems() || !isOpen() )
	 && value() == v )
	return;

    if ( comb ) {
	combo()->blockSignals( TRUE );
	if ( v.toBool() )
	    combo()->setCurrentItem( 1 );
	else
	    combo()->setCurrentItem( 0 );
	combo()->blockSignals( FALSE );
    }
    QString tmp = tr( "True" );
    if ( !v.toBool() )
	tmp = tr( "False" );
    setText( 1, tmp );
    PropertyItem::setValue( v );
}

void PropertyBoolItem::setValue()
{
    if ( !comb )
	return;
    setText( 1, combo()->currentText() );
    bool b = combo()->currentItem() == 0 ? (bool)FALSE : (bool)TRUE;
    PropertyItem::setValue( QVariant( b, 0 ) );
    notifyValueChange();
}

// --------------------------------------------------------------

PropertyIntItem::PropertyIntItem( PropertyList *l, PropertyItem *after, PropertyItem *prop,
				  const QString &propName, bool s )
    : PropertyItem( l, after, prop, propName ), signedValue( s )
{
    spinBx = 0;
}

QSpinBox *PropertyIntItem::spinBox()
{
    if ( spinBx )
	return spinBx;
    if ( signedValue )
	spinBx = new QSpinBox( -INT_MAX, INT_MAX, 1, listview->viewport() );
    else
	spinBx = new QSpinBox( 0, INT_MAX, 1, listview->viewport() );
    spinBx->hide();
    spinBx->installEventFilter( listview );
    QObjectList *ol = spinBx->queryList( "QLineEdit" );
    if ( ol && ol->first() )
	ol->first()->installEventFilter( listview );
    delete ol;
    connect( spinBx, SIGNAL( valueChanged( int ) ),
	     this, SLOT( setValue() ) );
    return spinBx;
}

PropertyIntItem::~PropertyIntItem()
{
    delete (QSpinBox*)spinBx;
    spinBx = 0;
}

void PropertyIntItem::showEditor()
{
    PropertyItem::showEditor();
    if ( !spinBx ) {
	spinBox()->blockSignals( TRUE );
	if ( signedValue )
	    spinBox()->setValue( value().toInt() );
	else
	    spinBox()->setValue( value().toUInt() );
	spinBox()->blockSignals( FALSE );
    }
    placeEditor( spinBox() );
    if ( !spinBox()->isVisible()  || !spinBox()->hasFocus()  ) {
	spinBox()->show();
	setFocus( spinBox() );
    }
}

void PropertyIntItem::hideEditor()
{
    PropertyItem::hideEditor();
    spinBox()->hide();
}

void PropertyIntItem::setValue( const QVariant &v )
{
    if ( ( !hasSubItems() || !isOpen() )
	 && value() == v )
	return;

    if ( spinBx ) {
	spinBox()->blockSignals( TRUE );
	if ( signedValue )
	    spinBox()->setValue( v.toInt() );
	else
	    spinBox()->setValue( v.toUInt() );
	spinBox()->blockSignals( FALSE );
    }

    if ( signedValue )
	    setText( 1, QString::number( v.toInt() ) );
    else
	    setText( 1, QString::number( v.toUInt() ) );
    PropertyItem::setValue( v );
}

void PropertyIntItem::setValue()
{
    if ( !spinBx )
	return;
    setText( 1, QString::number( spinBox()->value() ) );
    if ( signedValue )
	PropertyItem::setValue( spinBox()->value() );
    else
	PropertyItem::setValue( (uint)spinBox()->value() );
    notifyValueChange();
}

// --------------------------------------------------------------

PropertyListItem::PropertyListItem( PropertyList *l, PropertyItem *after, PropertyItem *prop,
				    const QString &propName, bool e )
    : PropertyItem( l, after, prop, propName ), editable( e )
{
    comb = 0;
    oldInt = -1;
}

QComboBox *PropertyListItem::combo()
{
    if ( comb )
	return comb;
    comb = new QComboBox( editable, listview->viewport() );
    comb->hide();
    connect( comb, SIGNAL( activated( int ) ),
	     this, SLOT( setValue() ) );
    comb->installEventFilter( listview );
    if ( editable ) {
	QObjectList *ol = comb->queryList( "QLineEdit" );
	if ( ol && ol->first() )
	    ol->first()->installEventFilter( listview );
	delete ol;
    }
    return comb;
}

PropertyListItem::~PropertyListItem()
{
    delete (QComboBox*)comb;
    comb = 0;
}

void PropertyListItem::showEditor()
{
    PropertyItem::showEditor();
    if ( !comb ) {
	combo()->blockSignals( TRUE );
	combo()->clear();
	combo()->insertStringList( value().toStringList() );
	combo()->blockSignals( FALSE );
    }
    placeEditor( combo() );
    if ( !combo()->isVisible()  || !combo()->hasFocus() ) {
	combo()->show();
	setFocus( combo() );
    }
}

void PropertyListItem::hideEditor()
{
    PropertyItem::hideEditor();
    combo()->hide();
}

void PropertyListItem::setValue( const QVariant &v )
{
    if ( comb ) {
	combo()->blockSignals( TRUE );
	combo()->clear();
	combo()->insertStringList( v.toStringList() );
	combo()->blockSignals( FALSE );
    }
    setText( 1, v.toStringList().first() );
    PropertyItem::setValue( v );
}

void PropertyListItem::setValue()
{
    if ( !comb )
	return;
    setText( 1, combo()->currentText() );
    QStringList lst;
    for ( uint i = 0; i < combo()->listBox()->count(); ++i )
	lst << combo()->listBox()->item( i )->text();
    PropertyItem::setValue( lst );
    notifyValueChange();
    oldInt = currentIntItem();
    oldString = currentItem();
}

QString PropertyListItem::currentItem() const
{
    return ( (PropertyListItem*)this )->combo()->currentText();
}

void PropertyListItem::setCurrentItem( const QString &s )
{