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 | QT_REQUIRE_CONFIG(qml_table_model); |
22 | |
23 | QT_BEGIN_NAMESPACE |
24 | |
25 | class QQmlTableInstanceModel; |
26 | class QQmlAbstractDelegateComponent; |
27 | |
28 | class QQmlTableInstanceModelIncubationTask : public QQDMIncubationTask |
29 | { |
30 | public: |
31 | QQmlTableInstanceModelIncubationTask( |
32 | QQmlTableInstanceModel *tableInstanceModel |
33 | , QQmlDelegateModelItem* modelItemToIncubate |
34 | , IncubationMode mode) |
35 | : QQDMIncubationTask(nullptr, mode) |
36 | , modelItemToIncubate(modelItemToIncubate) |
37 | , tableInstanceModel(tableInstanceModel) { |
38 | clear(); |
39 | } |
40 | |
41 | void statusChanged(Status status) override; |
42 | void setInitialState(QObject *object) override; |
43 | |
44 | QQmlDelegateModelItem *modelItemToIncubate = nullptr; |
45 | QQmlTableInstanceModel *tableInstanceModel = nullptr; |
46 | }; |
47 | |
48 | class Q_QMLMODELS_PRIVATE_EXPORT QQmlTableInstanceModel : public QQmlInstanceModel |
49 | { |
50 | Q_OBJECT |
51 | |
52 | public: |
53 | QQmlTableInstanceModel(QQmlContext *qmlContext, QObject *parent = nullptr); |
54 | ~QQmlTableInstanceModel() override; |
55 | |
56 | void useImportVersion(QTypeRevision version); |
57 | |
58 | int count() const override { return m_adaptorModel.count(); } |
59 | int rows() const { return m_adaptorModel.rowCount(); } |
60 | int columns() const { return m_adaptorModel.columnCount(); } |
61 | |
62 | bool isValid() const override { return true; } |
63 | |
64 | bool canFetchMore() const { return m_adaptorModel.canFetchMore(); } |
65 | void fetchMore() { m_adaptorModel.fetchMore(); } |
66 | |
67 | QVariant model() const; |
68 | void setModel(const QVariant &model); |
69 | |
70 | QQmlComponent *delegate() const; |
71 | void setDelegate(QQmlComponent *); |
72 | |
73 | const QAbstractItemModel *abstractItemModel() const override; |
74 | |
75 | QObject *object(int index, QQmlIncubator::IncubationMode incubationMode = QQmlIncubator::AsynchronousIfNested) override; |
76 | ReleaseFlags release(QObject *object, ReusableFlag reusable = NotReusable) override; |
77 | void dispose(QObject *object); |
78 | void cancel(int) override; |
79 | |
80 | void drainReusableItemsPool(int maxPoolTime) override; |
81 | int poolSize() override { return m_reusableItemsPool.size(); } |
82 | void reuseItem(QQmlDelegateModelItem *item, int newModelIndex); |
83 | |
84 | QQmlIncubator::Status incubationStatus(int index) override; |
85 | |
86 | bool setRequiredProperty(int index, const QString &name, const QVariant &value) final; |
87 | |
88 | QVariant variantValue(int, const QString &) override { Q_UNREACHABLE_RETURN(QVariant()); } |
89 | void setWatchedRoles(const QList<QByteArray> &) override { Q_UNREACHABLE(); } |
90 | int indexOf(QObject *, QObject *) const override { Q_UNREACHABLE_RETURN(0); } |
91 | |
92 | private: |
93 | enum DestructionMode { |
94 | Deferred, |
95 | Immediate |
96 | }; |
97 | |
98 | QQmlComponent *resolveDelegate(int index); |
99 | |
100 | QQmlAdaptorModel m_adaptorModel; |
101 | QQmlAbstractDelegateComponent *m_delegateChooser = nullptr; |
102 | QQmlComponent *m_delegate = nullptr; |
103 | QPointer<QQmlContext> m_qmlContext; |
104 | QQmlRefPointer<QQmlDelegateModelItemMetaType> m_metaType; |
105 | |
106 | QHash<int, QQmlDelegateModelItem *> m_modelItems; |
107 | QQmlReusableDelegateModelItemsPool m_reusableItemsPool; |
108 | QList<QQmlIncubator *> m_finishedIncubationTasks; |
109 | |
110 | void incubateModelItem(QQmlDelegateModelItem *modelItem, QQmlIncubator::IncubationMode incubationMode); |
111 | void incubatorStatusChanged(QQmlTableInstanceModelIncubationTask *dmIncubationTask, QQmlIncubator::Status status); |
112 | void deleteIncubationTaskLater(QQmlIncubator *incubationTask); |
113 | void deleteAllFinishedIncubationTasks(); |
114 | QQmlDelegateModelItem *resolveModelItem(int index); |
115 | void destroyModelItem(QQmlDelegateModelItem *modelItem, DestructionMode mode); |
116 | |
117 | void dataChangedCallback(const QModelIndex &begin, const QModelIndex &end, const QVector<int> &roles); |
118 | void modelAboutToBeResetCallback(); |
119 | |
120 | static bool isDoneIncubating(QQmlDelegateModelItem *modelItem); |
121 | static void deleteModelItemLater(QQmlDelegateModelItem *modelItem); |
122 | |
123 | friend class QQmlTableInstanceModelIncubationTask; |
124 | }; |
125 | |
126 | QT_END_NAMESPACE |
127 | |
128 | #endif // QQMLTABLEINSTANCEMODEL_P_H |
129 | |