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1/****************************************************************************
2**
3** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4** Contact: http://www.qt-project.org/legal
5**
6** This file is part of the QtDeclarative module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Digia. For licensing terms and
14** conditions see http://qt.digia.com/licensing. For further information
15** use the contact form at http://qt.digia.com/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 2.1 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 2.1 requirements
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24**
25** In addition, as a special exception, Digia gives you certain additional
26** rights. These rights are described in the Digia Qt LGPL Exception
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28**
29** GNU General Public License Usage
30** Alternatively, this file may be used under the terms of the GNU
31** General Public License version 3.0 as published by the Free Software
32** Foundation and appearing in the file LICENSE.GPL included in the
33** packaging of this file. Please review the following information to
34** ensure the GNU General Public License version 3.0 requirements will be
35** met: http://www.gnu.org/copyleft/gpl.html.
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37**
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QDECLARATIVECOMPONENT_H
43#define QDECLARATIVECOMPONENT_H
44
45#include <QtDeclarative/qdeclarative.h>
46#include <QtDeclarative/qdeclarativeerror.h>
47
48#include <QtCore/qobject.h>
49#include <QtCore/qstring.h>
50#include <QtScript/qscriptvalue.h>
51
52QT_BEGIN_HEADER
53
54QT_BEGIN_NAMESPACE
55
56QT_MODULE(Declarative)
57
58class QDeclarativeCompiledData;
59class QByteArray;
60class QDeclarativeComponentPrivate;
61class QDeclarativeEngine;
62class QDeclarativeComponentAttached;
63class Q_DECLARATIVE_EXPORT QDeclarativeComponent : public QObject
64{
65 Q_OBJECT
66 Q_DECLARE_PRIVATE(QDeclarativeComponent)
67
68 Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged)
69 Q_PROPERTY(Status status READ status NOTIFY statusChanged)
70 Q_PROPERTY(QUrl url READ url CONSTANT)
71
72public:
73 QDeclarativeComponent(QObject *parent = 0);
74 QDeclarativeComponent(QDeclarativeEngine *, QObject *parent=0);
75 QDeclarativeComponent(QDeclarativeEngine *, const QString &fileName, QObject *parent = 0);
76 QDeclarativeComponent(QDeclarativeEngine *, const QUrl &url, QObject *parent = 0);
77 virtual ~QDeclarativeComponent();
78
79 Q_ENUMS(Status)
80 enum Status { Null, Ready, Loading, Error };
81 Status status() const;
82
83 bool isNull() const;
84 bool isReady() const;
85 bool isError() const;
86 bool isLoading() const;
87
88 QList<QDeclarativeError> errors() const;
89 Q_INVOKABLE QString errorString() const;
90
91 qreal progress() const;
92
93 QUrl url() const;
94
95 virtual QObject *create(QDeclarativeContext *context = 0);
96 virtual QObject *beginCreate(QDeclarativeContext *);
97 virtual void completeCreate();
98
99 void loadUrl(const QUrl &url);
100 void setData(const QByteArray &, const QUrl &baseUrl);
101
102 QDeclarativeContext *creationContext() const;
103
104 static QDeclarativeComponentAttached *qmlAttachedProperties(QObject *);
105
106Q_SIGNALS:
107 void statusChanged(QDeclarativeComponent::Status);
108 void progressChanged(qreal);
109
110protected:
111 QDeclarativeComponent(QDeclarativeComponentPrivate &dd, QObject* parent);
112 Q_INVOKABLE QScriptValue createObject(QObject* parent);
113 Q_INVOKABLE Q_REVISION(1) QScriptValue createObject(QObject* parent, const QScriptValue& valuemap); //XXX Versioning
114
115private:
116 QDeclarativeComponent(QDeclarativeEngine *, QDeclarativeCompiledData *, int, int, QObject *parent);
117
118 Q_DISABLE_COPY(QDeclarativeComponent)
119 friend class QDeclarativeVME;
120 friend class QDeclarativeCompositeTypeData;
121 friend class QDeclarativeTypeData;
122};
123
124QT_END_NAMESPACE
125
126Q_DECLARE_METATYPE(QDeclarativeComponent::Status)
127QML_DECLARE_TYPE(QDeclarativeComponent)
128QML_DECLARE_TYPEINFO(QDeclarativeComponent, QML_HAS_ATTACHED_PROPERTIES)
129
130QT_END_HEADER
131
132#endif // QDECLARATIVECOMPONENT_H
133

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