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39 | |
40 | #ifndef QQMLTABLEINSTANCEMODEL_P_H |
41 | #define QQMLTABLEINSTANCEMODEL_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 <QtQmlModels/private/qqmldelegatemodel_p.h> |
55 | #include <QtQmlModels/private/qqmldelegatemodel_p_p.h> |
56 | |
57 | QT_REQUIRE_CONFIG(qml_table_model); |
58 | |
59 | QT_BEGIN_NAMESPACE |
60 | |
61 | class QQmlTableInstanceModel; |
62 | class QQmlAbstractDelegateComponent; |
63 | |
64 | class QQmlTableInstanceModelIncubationTask : public QQDMIncubationTask |
65 | { |
66 | public: |
67 | QQmlTableInstanceModelIncubationTask( |
68 | QQmlTableInstanceModel *tableInstanceModel |
69 | , QQmlDelegateModelItem* modelItemToIncubate |
70 | , IncubationMode mode) |
71 | : QQDMIncubationTask(nullptr, mode) |
72 | , modelItemToIncubate(modelItemToIncubate) |
73 | , tableInstanceModel(tableInstanceModel) { |
74 | clear(); |
75 | } |
76 | |
77 | void statusChanged(Status status) override; |
78 | void setInitialState(QObject *object) override; |
79 | |
80 | QQmlDelegateModelItem *modelItemToIncubate = nullptr; |
81 | QQmlTableInstanceModel *tableInstanceModel = nullptr; |
82 | }; |
83 | |
84 | class Q_QMLMODELS_PRIVATE_EXPORT QQmlTableInstanceModel : public QQmlInstanceModel |
85 | { |
86 | Q_OBJECT |
87 | |
88 | public: |
89 | QQmlTableInstanceModel(QQmlContext *qmlContext, QObject *parent = nullptr); |
90 | ~QQmlTableInstanceModel() override; |
91 | |
92 | void useImportVersion(int minorVersion); |
93 | |
94 | int count() const override { return m_adaptorModel.count(); } |
95 | int rows() const { return m_adaptorModel.rowCount(); } |
96 | int columns() const { return m_adaptorModel.columnCount(); } |
97 | |
98 | bool isValid() const override { return true; } |
99 | |
100 | bool canFetchMore() const { return m_adaptorModel.canFetchMore(); } |
101 | void fetchMore() { m_adaptorModel.fetchMore(); } |
102 | |
103 | QVariant model() const; |
104 | void setModel(const QVariant &model); |
105 | |
106 | QQmlComponent *delegate() const; |
107 | void setDelegate(QQmlComponent *); |
108 | |
109 | const QAbstractItemModel *abstractItemModel() const override; |
110 | |
111 | QObject *object(int index, QQmlIncubator::IncubationMode incubationMode = QQmlIncubator::AsynchronousIfNested) override; |
112 | ReleaseFlags release(QObject *object, ReusableFlag reusable = NotReusable) override; |
113 | void dispose(QObject *object); |
114 | void cancel(int) override; |
115 | |
116 | void drainReusableItemsPool(int maxPoolTime) override; |
117 | int poolSize() override { return m_reusableItemsPool.size(); } |
118 | void reuseItem(QQmlDelegateModelItem *item, int newModelIndex); |
119 | |
120 | QQmlIncubator::Status incubationStatus(int index) override; |
121 | |
122 | QVariant variantValue(int, const QString &) override { Q_UNREACHABLE(); return QVariant(); } |
123 | void setWatchedRoles(const QList<QByteArray> &) override { Q_UNREACHABLE(); } |
124 | int indexOf(QObject *, QObject *) const override { Q_UNREACHABLE(); return 0; } |
125 | |
126 | private: |
127 | enum DestructionMode { |
128 | Deferred, |
129 | Immediate |
130 | }; |
131 | |
132 | QQmlComponent *resolveDelegate(int index); |
133 | |
134 | QQmlAdaptorModel m_adaptorModel; |
135 | QQmlAbstractDelegateComponent *m_delegateChooser = nullptr; |
136 | QQmlComponent *m_delegate = nullptr; |
137 | QPointer<QQmlContext> m_qmlContext; |
138 | QQmlRefPointer<QQmlDelegateModelItemMetaType> m_metaType; |
139 | |
140 | QHash<int, QQmlDelegateModelItem *> m_modelItems; |
141 | QQmlReusableDelegateModelItemsPool m_reusableItemsPool; |
142 | QList<QQmlIncubator *> m_finishedIncubationTasks; |
143 | |
144 | void incubateModelItem(QQmlDelegateModelItem *modelItem, QQmlIncubator::IncubationMode incubationMode); |
145 | void incubatorStatusChanged(QQmlTableInstanceModelIncubationTask *dmIncubationTask, QQmlIncubator::Status status); |
146 | void deleteIncubationTaskLater(QQmlIncubator *incubationTask); |
147 | void deleteAllFinishedIncubationTasks(); |
148 | QQmlDelegateModelItem *resolveModelItem(int index); |
149 | void destroyModelItem(QQmlDelegateModelItem *modelItem, DestructionMode mode); |
150 | |
151 | void dataChangedCallback(const QModelIndex &begin, const QModelIndex &end, const QVector<int> &roles); |
152 | |
153 | static bool isDoneIncubating(QQmlDelegateModelItem *modelItem); |
154 | static void deleteModelItemLater(QQmlDelegateModelItem *modelItem); |
155 | |
156 | friend class QQmlTableInstanceModelIncubationTask; |
157 | }; |
158 | |
159 | QT_END_NAMESPACE |
160 | |
161 | #endif // QQMLTABLEINSTANCEMODEL_P_H |
162 | |