diff options
Diffstat (limited to 'src/qtquick1/util/qdeclarativeconnections.cpp')
| -rw-r--r-- | src/qtquick1/util/qdeclarativeconnections.cpp | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/src/qtquick1/util/qdeclarativeconnections.cpp b/src/qtquick1/util/qdeclarativeconnections.cpp deleted file mode 100644 index 7d48954288..0000000000 --- a/src/qtquick1/util/qdeclarativeconnections.cpp +++ /dev/null @@ -1,294 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "QtQuick1/private/qdeclarativeconnections_p.h" - -#include <QtDeclarative/qdeclarativeexpression.h> -#include <QtDeclarative/private/qdeclarativeproperty_p.h> -#include <QtDeclarative/private/qdeclarativeboundsignal_p.h> -#include <QtDeclarative/qdeclarativecontext.h> -#include <QtDeclarative/private/qdeclarativecontext_p.h> -#include <QtDeclarative/qdeclarativeinfo.h> - -#include <QtCore/qdebug.h> -#include <QtCore/qstringlist.h> - -#include <private/qobject_p.h> - -QT_BEGIN_NAMESPACE - - - -class QDeclarative1ConnectionsPrivate : public QObjectPrivate -{ -public: - QDeclarative1ConnectionsPrivate() : target(0), targetSet(false), ignoreUnknownSignals(false), componentcomplete(true) {} - - QList<QDeclarativeBoundSignal*> boundsignals; - QObject *target; - - bool targetSet; - bool ignoreUnknownSignals; - bool componentcomplete; - - QByteArray data; -}; - -/*! - \qmlclass Connections QDeclarative1Connections - \inqmlmodule QtQuick 1 - \ingroup qml-utility-elements - \since QtQuick 1.0 - \brief A Connections element describes generalized connections to signals. - - A Connections object creates a connection to a QML signal. - - When connecting to signals in QML, the usual way is to create an - "on<Signal>" handler that reacts when a signal is received, like this: - - \qml - MouseArea { - onClicked: { foo(parameters) } - } - \endqml - - However, it is not possible to connect to a signal in this way in some - cases, such as when: - - \list - \i Multiple connections to the same signal are required - \i Creating connections outside the scope of the signal sender - \i Connecting to targets not defined in QML - \endlist - - When any of these are needed, the Connections element can be used instead. - - For example, the above code can be changed to use a Connections object, - like this: - - \qml - MouseArea { - Connections { - onClicked: foo(parameters) - } - } - \endqml - - More generally, the Connections object can be a child of some object other than - the sender of the signal: - - \qml - MouseArea { - id: area - } - // ... - \endqml - \qml - Connections { - target: area - onClicked: foo(parameters) - } - \endqml - - \sa QtDeclarative -*/ -QDeclarative1Connections::QDeclarative1Connections(QObject *parent) : - QObject(*(new QDeclarative1ConnectionsPrivate), parent) -{ -} - -QDeclarative1Connections::~QDeclarative1Connections() -{ -} - -/*! - \qmlproperty Object QtQuick1::Connections::target - This property holds the object that sends the signal. - - If this property is not set, the \c target defaults to the parent of the Connection. - - If set to null, no connection is made and any signal handlers are ignored - until the target is not null. -*/ -QObject *QDeclarative1Connections::target() const -{ - Q_D(const QDeclarative1Connections); - return d->targetSet ? d->target : parent(); -} - -void QDeclarative1Connections::setTarget(QObject *obj) -{ - Q_D(QDeclarative1Connections); - d->targetSet = true; // even if setting to 0, it is *set* - if (d->target == obj) - return; - foreach (QDeclarativeBoundSignal *s, d->boundsignals) { - // It is possible that target is being changed due to one of our signal - // handlers -> use deleteLater(). - if (s->isEvaluating()) - s->deleteLater(); - else - delete s; - } - d->boundsignals.clear(); - d->target = obj; - connectSignals(); - emit targetChanged(); -} - -/*! - \qmlproperty bool QtQuick1::Connections::ignoreUnknownSignals - - Normally, a connection to a non-existent signal produces runtime errors. - - If this property is set to \c true, such errors are ignored. - This is useful if you intend to connect to different types of objects, handling - a different set of signals for each object. -*/ -bool QDeclarative1Connections::ignoreUnknownSignals() const -{ - Q_D(const QDeclarative1Connections); - return d->ignoreUnknownSignals; -} - -void QDeclarative1Connections::setIgnoreUnknownSignals(bool ignore) -{ - Q_D(QDeclarative1Connections); - d->ignoreUnknownSignals = ignore; -} - - - -QByteArray -QDeclarative1ConnectionsParser::compile(const QList<QDeclarativeCustomParserProperty> &props) -{ - QByteArray rv; - QDataStream ds(&rv, QIODevice::WriteOnly); - - for(int ii = 0; ii < props.count(); ++ii) - { - QString propName = props.at(ii).name(); - if (!propName.startsWith(QLatin1String("on")) || !propName.at(2).isUpper()) { - error(props.at(ii), QDeclarative1Connections::tr("Cannot assign to non-existent property \"%1\"").arg(propName)); - return QByteArray(); - } - - QList<QVariant> values = props.at(ii).assignedValues(); - - for (int i = 0; i < values.count(); ++i) { - const QVariant &value = values.at(i); - - if (value.userType() == qMetaTypeId<QDeclarativeCustomParserNode>()) { - error(props.at(ii), QDeclarative1Connections::tr("Connections: nested objects not allowed")); - return QByteArray(); - } else if (value.userType() == qMetaTypeId<QDeclarativeCustomParserProperty>()) { - error(props.at(ii), QDeclarative1Connections::tr("Connections: syntax error")); - return QByteArray(); - } else { - QDeclarativeScript::Variant v = qvariant_cast<QDeclarativeScript::Variant>(value); - if (v.isScript()) { - ds << propName; - ds << v.asScript(); - } else { - error(props.at(ii), QDeclarative1Connections::tr("Connections: script expected")); - return QByteArray(); - } - } - } - } - - return rv; -} - -void QDeclarative1ConnectionsParser::setCustomData(QObject *object, - const QByteArray &data) -{ - QDeclarative1ConnectionsPrivate *p = - static_cast<QDeclarative1ConnectionsPrivate *>(QObjectPrivate::get(object)); - p->data = data; -} - - -void QDeclarative1Connections::connectSignals() -{ - Q_D(QDeclarative1Connections); - if (!d->componentcomplete || (d->targetSet && !target())) - return; - - QDataStream ds(d->data); - while (!ds.atEnd()) { - QString propName; - ds >> propName; - QString script; - ds >> script; - QDeclarativeProperty prop(target(), propName); - if (prop.isValid() && (prop.type() & QDeclarativeProperty::SignalProperty)) { - QDeclarativeBoundSignal *signal = - new QDeclarativeBoundSignal(target(), prop.method(), this); - QDeclarativeExpression *expression = new QDeclarativeExpression(qmlContext(this), 0, script); - QDeclarativeData *ddata = QDeclarativeData::get(this); - if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty()) - expression->setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber, ddata->columnNumber); - signal->setExpression(expression); - d->boundsignals += signal; - } else { - if (!d->ignoreUnknownSignals) - qmlInfo(this) << tr("Cannot assign to non-existent property \"%1\"").arg(propName); - } - } -} - -void QDeclarative1Connections::classBegin() -{ - Q_D(QDeclarative1Connections); - d->componentcomplete=false; -} - -void QDeclarative1Connections::componentComplete() -{ - Q_D(QDeclarative1Connections); - d->componentcomplete=true; - connectSignals(); -} - - - -QT_END_NAMESPACE |