1 | // Copyright (C) 2018 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQMLTABLEINSTANCEMODEL_P_H |
5 | #define QQMLTABLEINSTANCEMODEL_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QtQmlModels/private/qqmldelegatemodel_p.h> |
19 | #include <QtQmlModels/private/qqmldelegatemodel_p_p.h> |
20 | |
21 | #include <QtCore/qpointer.h> |
22 | |
23 | QT_REQUIRE_CONFIG(qml_table_model); |
24 | |
25 | QT_BEGIN_NAMESPACE |
26 | |
27 | class QQmlTableInstanceModel; |
28 | class QQmlAbstractDelegateComponent; |
29 | |
30 | class QQmlTableInstanceModelIncubationTask : public QQDMIncubationTask |
31 | { |
32 | public: |
33 | QQmlTableInstanceModelIncubationTask( |
34 | QQmlTableInstanceModel *tableInstanceModel |
35 | , QQmlDelegateModelItem* modelItemToIncubate |
36 | , IncubationMode mode) |
37 | : QQDMIncubationTask(nullptr, mode) |
38 | , modelItemToIncubate(modelItemToIncubate) |
39 | , tableInstanceModel(tableInstanceModel) { |
40 | clear(); |
41 | } |
42 | |
43 | void statusChanged(Status status) override; |
44 | void setInitialState(QObject *object) override; |
45 | |
46 | QQmlDelegateModelItem *modelItemToIncubate = nullptr; |
47 | QQmlTableInstanceModel *tableInstanceModel = nullptr; |
48 | }; |
49 | |
50 | class Q_QMLMODELS_EXPORT QQmlTableInstanceModel : public QQmlInstanceModel |
51 | { |
52 | Q_OBJECT |
53 | |
54 | public: |
55 | QQmlTableInstanceModel(QQmlContext *qmlContext, QObject *parent = nullptr); |
56 | ~QQmlTableInstanceModel() override; |
57 | |
58 | void useImportVersion(QTypeRevision version); |
59 | |
60 | int count() const override { return m_adaptorModel.count(); } |
61 | int rows() const { return m_adaptorModel.rowCount(); } |
62 | int columns() const { return m_adaptorModel.columnCount(); } |
63 | |
64 | bool isValid() const override { return true; } |
65 | |
66 | bool canFetchMore() const { return m_adaptorModel.canFetchMore(); } |
67 | void fetchMore() { m_adaptorModel.fetchMore(); } |
68 | |
69 | QVariant model() const; |
70 | void setModel(const QVariant &model); |
71 | |
72 | QQmlComponent *delegate() const; |
73 | void setDelegate(QQmlComponent *); |
74 | |
75 | const QAbstractItemModel *abstractItemModel() const override; |
76 | |
77 | QObject *object(int index, QQmlIncubator::IncubationMode incubationMode = QQmlIncubator::AsynchronousIfNested) override; |
78 | ReleaseFlags release(QObject *object, ReusableFlag reusable = NotReusable) override; |
79 | void dispose(QObject *object); |
80 | void cancel(int) override; |
81 | |
82 | void drainReusableItemsPool(int maxPoolTime) override; |
83 | int poolSize() override { return m_reusableItemsPool.size(); } |
84 | void reuseItem(QQmlDelegateModelItem *item, int newModelIndex); |
85 | |
86 | QQmlIncubator::Status incubationStatus(int index) override; |
87 | |
88 | bool setRequiredProperty(int index, const QString &name, const QVariant &value) final; |
89 | |
90 | QVariant variantValue(int, const QString &) override { Q_UNREACHABLE_RETURN(QVariant()); } |
91 | void setWatchedRoles(const QList<QByteArray> &) override { Q_UNREACHABLE(); } |
92 | int indexOf(QObject *, QObject *) const override { Q_UNREACHABLE_RETURN(0); } |
93 | |
94 | private: |
95 | enum DestructionMode { |
96 | Deferred, |
97 | Immediate |
98 | }; |
99 | |
100 | QQmlComponent *resolveDelegate(int index); |
101 | |
102 | QQmlAdaptorModel m_adaptorModel; |
103 | QQmlAbstractDelegateComponent *m_delegateChooser = nullptr; |
104 | QQmlComponent *m_delegate = nullptr; |
105 | QPointer<QQmlContext> m_qmlContext; |
106 | QQmlRefPointer<QQmlDelegateModelItemMetaType> m_metaType; |
107 | |
108 | QHash<int, QQmlDelegateModelItem *> m_modelItems; |
109 | QQmlReusableDelegateModelItemsPool m_reusableItemsPool; |
110 | QList<QQmlIncubator *> m_finishedIncubationTasks; |
111 | |
112 | void incubateModelItem(QQmlDelegateModelItem *modelItem, QQmlIncubator::IncubationMode incubationMode); |
113 | void incubatorStatusChanged(QQmlTableInstanceModelIncubationTask *dmIncubationTask, QQmlIncubator::Status status); |
114 | void deleteIncubationTaskLater(QQmlIncubator *incubationTask); |
115 | void deleteAllFinishedIncubationTasks(); |
116 | QQmlDelegateModelItem *resolveModelItem(int index); |
117 | void destroyModelItem(QQmlDelegateModelItem *modelItem, DestructionMode mode); |
118 | |
119 | void dataChangedCallback(const QModelIndex &begin, const QModelIndex &end, const QVector<int> &roles); |
120 | void modelAboutToBeResetCallback(); |
121 | |
122 | static bool isDoneIncubating(QQmlDelegateModelItem *modelItem); |
123 | static void deleteModelItemLater(QQmlDelegateModelItem *modelItem); |
124 | |
125 | friend class QQmlTableInstanceModelIncubationTask; |
126 | }; |
127 | |
128 | QT_END_NAMESPACE |
129 | |
130 | #endif // QQMLTABLEINSTANCEMODEL_P_H |
131 | |