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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
71QT_BEGIN_NAMESPACE
72
73class QQmlComponent;
74class QQmlEngine;
75
76class QQmlComponentAttached;
77class Q_QML_PRIVATE_EXPORT QQmlComponentPrivate : public QObjectPrivate, public QQmlTypeData::TypeDataCallback
78{
79 Q_DECLARE_PUBLIC(QQmlComponent)
80
81public:
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);
90 static void setInitialProperties(QV4::ExecutionEngine *engine, QV4::QmlContext *qmlContext, const QV4::Value &o, const QV4::Value &v);
91
92 virtual void incubateObject(
93 QQmlIncubator *incubationTask,
94 QQmlComponent *component,
95 QQmlEngine *engine,
96 QQmlContextData *context,
97 QQmlContextData *forContext);
98
99 QQmlRefPointer<QQmlTypeData> typeData;
100 void typeDataReady(QQmlTypeData *) override;
101 void typeDataProgress(QQmlTypeData *, qreal) override;
102
103 void fromTypeData(const QQmlRefPointer<QQmlTypeData> &data);
104
105 QUrl url;
106 qreal progress;
107
108 int start;
109 QQmlRefPointer<QV4::ExecutableCompilationUnit> compilationUnit;
110
111 struct ConstructionState {
112 ConstructionState()
113 : completePending(false)
114 {}
115 ~ConstructionState()
116 {
117 }
118
119 QScopedPointer<QQmlObjectCreator> creator;
120 QList<QQmlError> errors;
121 bool completePending;
122 };
123 ConstructionState state;
124
125 struct DeferredState {
126 ~DeferredState() {
127 qDeleteAll(constructionStates);
128 constructionStates.clear();
129 }
130 QVector<ConstructionState *> constructionStates;
131 };
132
133 static void beginDeferred(QQmlEnginePrivate *enginePriv, QObject *object, DeferredState* deferredState);
134 static void completeDeferred(QQmlEnginePrivate *enginePriv, DeferredState *deferredState);
135
136 static void complete(QQmlEnginePrivate *enginePriv, ConstructionState *state);
137
138 QQmlEngine *engine;
139 QQmlGuardedContextData creationContext;
140
141 void clear();
142
143 static QQmlComponentPrivate *get(QQmlComponent *c) {
144 return static_cast<QQmlComponentPrivate *>(QObjectPrivate::get(c));
145 }
146};
147
148QT_END_NAMESPACE
149
150#endif // QQMLCOMPONENT_P_H
151