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3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
6 ** This file is part of the QtQml module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
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17 ** GNU Lesser General Public License Usage
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29 ** GNU General Public License Usage
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34 ** ensure the GNU General Public License version 3.0 requirements will be
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40 ****************************************************************************/
44 #include "qqmldata_p.h"
45 #include "qqmlcontext.h"
46 #include "qqmlcontext_p.h"
47 #include "qqmlmetatype_p.h"
48 #include "qqmlengine_p.h"
50 #include <QCoreApplication>
55 \fn QQmlInfo qmlInfo(const QObject *object)
58 Prints warning messages that include the file and line number for the
59 specified QML \a object.
61 When QML types display warning messages, it improves traceability
62 if they include the QML file and line number on which the
63 particular instance was instantiated.
65 To include the file and line number, an object must be passed. If
66 the file and line number is not available for that instance
67 (either it was not instantiated by the QML engine or location
68 information is disabled), "unknown location" will be used instead.
73 qmlInfo(object) << tr("component property is a write-once property");
79 QML MyCustomType (unknown location): component property is a write-once property
86 QQmlInfoPrivate() : ref (1), object(0) {}
89 const QObject *object;
91 QList<QQmlError> errors;
94 QQmlInfo::QQmlInfo(QQmlInfoPrivate *p)
95 : QDebug(&p->buffer), d(p)
100 QQmlInfo::QQmlInfo(const QQmlInfo &other)
101 : QDebug(other), d(other.d)
106 QQmlInfo::~QQmlInfo()
109 QList<QQmlError> errors = d->errors;
111 QQmlEngine *engine = 0;
113 if (!d->buffer.isEmpty()) {
116 QObject *object = const_cast<QObject *>(d->object);
119 engine = qmlEngine(d->object);
121 QQmlType *type = QQmlMetaType::qmlType(object->metaObject());
123 typeName = type->qmlTypeName();
124 int lastSlash = typeName.lastIndexOf(QLatin1Char('/'));
126 typeName = typeName.mid(lastSlash+1);
128 typeName = QString::fromUtf8(object->metaObject()->className());
129 int marker = typeName.indexOf(QLatin1String("_QMLTYPE_"));
131 typeName = typeName.left(marker);
133 marker = typeName.indexOf(QLatin1String("_QML_"));
135 typeName = typeName.left(marker);
136 typeName += QLatin1Char('*');
137 type = QQmlMetaType::qmlType(QMetaType::type(typeName.toLatin1()));
139 typeName = type->qmlTypeName();
140 int lastSlash = typeName.lastIndexOf(QLatin1Char('/'));
142 typeName = typeName.mid(lastSlash+1);
147 d->buffer.prepend(QLatin1String("QML ") + typeName + QLatin1String(": "));
149 QQmlData *ddata = QQmlData::get(object, false);
150 if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty()) {
151 error.setUrl(ddata->outerContext->url);
152 error.setLine(ddata->lineNumber);
153 error.setColumn(ddata->columnNumber);
157 error.setDescription(d->buffer);
159 errors.prepend(error);
162 QQmlEnginePrivate::warning(engine, errors);
168 QQmlInfo qmlInfo(const QObject *me)
170 QQmlInfoPrivate *d = new QQmlInfoPrivate;
175 QQmlInfo qmlInfo(const QObject *me, const QQmlError &error)
177 QQmlInfoPrivate *d = new QQmlInfoPrivate;
183 QQmlInfo qmlInfo(const QObject *me, const QList<QQmlError> &errors)
185 QQmlInfoPrivate *d = new QQmlInfoPrivate;