1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the QtQml 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 The Qt Company. For licensing terms |
14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
15 | ** information use the contact form at https://www.qt.io/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 3 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 3 requirements |
23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
24 | ** |
25 | ** GNU General Public License Usage |
26 | ** Alternatively, this file may be used under the terms of the GNU |
27 | ** General Public License version 2.0 or (at your option) the GNU General |
28 | ** Public license version 3 or any later version approved by the KDE Free |
29 | ** Qt Foundation. The licenses are as published by the Free Software |
30 | ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
31 | ** included in the packaging of this file. Please review the following |
32 | ** information to ensure the GNU General Public License requirements will |
33 | ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
34 | ** https://www.gnu.org/licenses/gpl-3.0.html. |
35 | ** |
36 | ** $QT_END_LICENSE$ |
37 | ** |
38 | ****************************************************************************/ |
39 | |
40 | #ifndef QQMLCOMPONENT_P_H |
41 | #define QQMLCOMPONENT_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include "qqmlcomponent.h" |
55 | |
56 | #include "qqmlengine_p.h" |
57 | #include "qqmltypeloader_p.h" |
58 | #include <private/qbitfield_p.h> |
59 | #include "qqmlvme_p.h" |
60 | #include "qqmlerror.h" |
61 | #include "qqml.h" |
62 | #include <private/qqmlobjectcreator_p.h> |
63 | #include <private/qqmltypedata_p.h> |
64 | |
65 | #include <QtCore/QString> |
66 | #include <QtCore/QStringList> |
67 | #include <QtCore/QList> |
68 | |
69 | #include <private/qobject_p.h> |
70 | |
71 | QT_BEGIN_NAMESPACE |
72 | |
73 | class QQmlComponent; |
74 | class QQmlEngine; |
75 | |
76 | class QQmlComponentAttached; |
77 | class Q_QML_PRIVATE_EXPORT QQmlComponentPrivate : public QObjectPrivate, public QQmlTypeData::TypeDataCallback |
78 | { |
79 | Q_DECLARE_PUBLIC(QQmlComponent) |
80 | |
81 | public: |
82 | QQmlComponentPrivate() |
83 | : progress(0.), start(-1), engine(nullptr), creationContext(nullptr) {} |
84 | |
85 | void loadUrl(const QUrl &newUrl, QQmlComponent::CompilationMode mode = QQmlComponent::PreferSynchronous); |
86 | |
87 | QObject *beginCreate(QQmlContextData *); |
88 | void completeCreate(); |
89 | void initializeObjectWithInitialProperties(QV4::QmlContext *qmlContext, const QV4::Value &valuemap, QObject *toCreate, RequiredProperties &requiredProperties); |
90 | static void setInitialProperties(QV4::ExecutionEngine *engine, QV4::QmlContext *qmlContext, const QV4::Value &o, const QV4::Value &v, RequiredProperties &requiredProperties, QObject *createdComponent); |
91 | static QQmlError unsetRequiredPropertyToQQmlError(const RequiredPropertyInfo &unsetRequiredProperty); |
92 | |
93 | virtual void incubateObject( |
94 | QQmlIncubator *incubationTask, |
95 | QQmlComponent *component, |
96 | QQmlEngine *engine, |
97 | QQmlContextData *context, |
98 | QQmlContextData *forContext); |
99 | |
100 | QQmlRefPointer<QQmlTypeData> typeData; |
101 | void typeDataReady(QQmlTypeData *) override; |
102 | void typeDataProgress(QQmlTypeData *, qreal) override; |
103 | |
104 | void fromTypeData(const QQmlRefPointer<QQmlTypeData> &data); |
105 | |
106 | QUrl url; |
107 | qreal progress; |
108 | |
109 | int start; |
110 | RequiredProperties& requiredProperties(); |
111 | bool hadRequiredProperties() const; |
112 | QQmlRefPointer<QV4::ExecutableCompilationUnit> compilationUnit; |
113 | |
114 | struct ConstructionState { |
115 | ConstructionState() |
116 | : completePending(false) |
117 | {} |
118 | ~ConstructionState() |
119 | { |
120 | } |
121 | |
122 | QScopedPointer<QQmlObjectCreator> creator; |
123 | QList<QQmlError> errors; |
124 | bool completePending; |
125 | }; |
126 | ConstructionState state; |
127 | |
128 | struct DeferredState { |
129 | ~DeferredState() { |
130 | qDeleteAll(c: constructionStates); |
131 | constructionStates.clear(); |
132 | } |
133 | QVector<ConstructionState *> constructionStates; |
134 | }; |
135 | |
136 | static void beginDeferred(QQmlEnginePrivate *enginePriv, QObject *object, DeferredState* deferredState); |
137 | static void completeDeferred(QQmlEnginePrivate *enginePriv, DeferredState *deferredState); |
138 | |
139 | static void complete(QQmlEnginePrivate *enginePriv, ConstructionState *state); |
140 | static QQmlProperty removePropertyFromRequired(QObject *createdComponent, const QString &name, RequiredProperties& requiredProperties, bool *wasInRequiredProperties = nullptr); |
141 | |
142 | QQmlEngine *engine; |
143 | QQmlGuardedContextData creationContext; |
144 | |
145 | void clear(); |
146 | |
147 | static QQmlComponentPrivate *get(QQmlComponent *c) { |
148 | return static_cast<QQmlComponentPrivate *>(QObjectPrivate::get(o: c)); |
149 | } |
150 | |
151 | QObject *doBeginCreate(QQmlComponent *q, QQmlContext *context); |
152 | bool setInitialProperty(QObject *component, const QString &name, const QVariant& value); |
153 | }; |
154 | |
155 | QT_END_NAMESPACE |
156 | |
157 | #endif // QQMLCOMPONENT_P_H |
158 | |