1 | // Copyright (C) 2016 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 QQUICKSTATE_P_H |
5 | #define QQUICKSTATE_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 "qquickstate_p.h" |
19 | |
20 | #include "qquicktransitionmanager_p_p.h" |
21 | |
22 | #include <private/qqmlproperty_p.h> |
23 | #include <private/qqmlguard_p.h> |
24 | |
25 | #include <private/qqmlbinding_p.h> |
26 | |
27 | #include <private/qobject_p.h> |
28 | |
29 | QT_BEGIN_NAMESPACE |
30 | |
31 | class QQuickSimpleAction |
32 | { |
33 | public: |
34 | enum State { StartState, EndState }; |
35 | QQuickSimpleAction(const QQuickStateAction &a, State state = StartState) |
36 | { |
37 | m_property = a.property; |
38 | m_specifiedObject = a.specifiedObject; |
39 | m_specifiedProperty = a.specifiedProperty; |
40 | m_event = a.event; |
41 | if (state == StartState) { |
42 | m_value = a.fromValue; |
43 | m_binding = QQmlAnyBinding::ofProperty(prop: m_property); |
44 | m_reverseEvent = true; |
45 | } else { |
46 | m_value = a.toValue; |
47 | m_binding = a.toBinding; |
48 | m_reverseEvent = false; |
49 | } |
50 | } |
51 | |
52 | ~QQuickSimpleAction() |
53 | { |
54 | } |
55 | |
56 | QQuickSimpleAction(const QQuickSimpleAction &other) |
57 | : m_property(other.m_property), |
58 | m_value(other.m_value), |
59 | m_binding(other.binding()), |
60 | m_specifiedObject(other.m_specifiedObject), |
61 | m_specifiedProperty(other.m_specifiedProperty), |
62 | m_event(other.m_event), |
63 | m_reverseEvent(other.m_reverseEvent) |
64 | { |
65 | } |
66 | |
67 | QQuickSimpleAction &operator =(const QQuickSimpleAction &other) |
68 | { |
69 | m_property = other.m_property; |
70 | m_value = other.m_value; |
71 | m_binding = other.binding(); |
72 | m_specifiedObject = other.m_specifiedObject; |
73 | m_specifiedProperty = other.m_specifiedProperty; |
74 | m_event = other.m_event; |
75 | m_reverseEvent = other.m_reverseEvent; |
76 | |
77 | return *this; |
78 | } |
79 | |
80 | void setProperty(const QQmlProperty &property) |
81 | { |
82 | m_property = property; |
83 | } |
84 | |
85 | const QQmlProperty &property() const |
86 | { |
87 | return m_property; |
88 | } |
89 | |
90 | void setValue(const QVariant &value) |
91 | { |
92 | m_value = value; |
93 | } |
94 | |
95 | const QVariant &value() const |
96 | { |
97 | return m_value; |
98 | } |
99 | |
100 | void setBinding(QQmlAnyBinding binding) |
101 | { |
102 | m_binding = binding; |
103 | } |
104 | |
105 | QQmlAnyBinding binding() const |
106 | { |
107 | return m_binding; |
108 | } |
109 | |
110 | QObject *specifiedObject() const |
111 | { |
112 | return m_specifiedObject; |
113 | } |
114 | |
115 | const QString &specifiedProperty() const |
116 | { |
117 | return m_specifiedProperty; |
118 | } |
119 | |
120 | QQuickStateActionEvent *event() const |
121 | { |
122 | return m_event; |
123 | } |
124 | |
125 | bool reverseEvent() const |
126 | { |
127 | return m_reverseEvent; |
128 | } |
129 | |
130 | private: |
131 | QQmlProperty m_property; |
132 | QVariant m_value; |
133 | QQmlAnyBinding m_binding; |
134 | QObject *m_specifiedObject; |
135 | QString m_specifiedProperty; |
136 | QQuickStateActionEvent *m_event; |
137 | bool m_reverseEvent; |
138 | }; |
139 | |
140 | class QQuickRevertAction |
141 | { |
142 | public: |
143 | QQuickRevertAction() : event(nullptr) {} |
144 | QQuickRevertAction(const QQmlProperty &prop) : property(prop), event(nullptr) {} |
145 | QQuickRevertAction(QQuickStateActionEvent *e) : event(e) {} |
146 | QQmlProperty property; |
147 | QQuickStateActionEvent *event; |
148 | }; |
149 | |
150 | class QQuickStateOperationPrivate : public QObjectPrivate |
151 | { |
152 | Q_DECLARE_PUBLIC(QQuickStateOperation) |
153 | |
154 | public: |
155 | |
156 | QQuickStateOperationPrivate() |
157 | : m_state(nullptr) {} |
158 | |
159 | QQuickState *m_state; |
160 | }; |
161 | |
162 | class QQuickStatePrivate : public QObjectPrivate |
163 | { |
164 | Q_DECLARE_PUBLIC(QQuickState) |
165 | |
166 | public: |
167 | QQuickStatePrivate() |
168 | : when(false), whenKnown(false), named(false), inState(false), group(nullptr) {} |
169 | |
170 | typedef QList<QQuickSimpleAction> SimpleActionList; |
171 | |
172 | QString name; |
173 | bool when; |
174 | bool whenKnown; |
175 | bool named; |
176 | |
177 | struct OperationGuard : public QQmlGuard<QQuickStateOperation> |
178 | { |
179 | OperationGuard(QObject *obj, QList<OperationGuard> *l) : QQmlGuard<QQuickStateOperation>( |
180 | OperationGuard::objectDestroyedImpl, nullptr) |
181 | ,list(l) |
182 | { |
183 | setObject(static_cast<QQuickStateOperation *>(obj)); |
184 | } |
185 | QList<OperationGuard> *list; |
186 | |
187 | private: |
188 | static void objectDestroyedImpl(QQmlGuardImpl *guard) { |
189 | auto This = static_cast<OperationGuard *>(guard); |
190 | // we assume priv will always be destroyed after objectDestroyed calls |
191 | This->list->removeOne(t: *This); |
192 | } |
193 | }; |
194 | QList<OperationGuard> operations; |
195 | |
196 | static void operations_append(QQmlListProperty<QQuickStateOperation> *prop, QQuickStateOperation *op) { |
197 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
198 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
199 | list->append(t: OperationGuard(op, list)); |
200 | } |
201 | static void operations_clear(QQmlListProperty<QQuickStateOperation> *prop) { |
202 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
203 | for (auto &e : *list) |
204 | e->setState(nullptr); |
205 | list->clear(); |
206 | } |
207 | static qsizetype operations_count(QQmlListProperty<QQuickStateOperation> *prop) { |
208 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
209 | return list->size(); |
210 | } |
211 | static QQuickStateOperation *operations_at(QQmlListProperty<QQuickStateOperation> *prop, qsizetype index) { |
212 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
213 | return list->at(i: index); |
214 | } |
215 | static void operations_replace(QQmlListProperty<QQuickStateOperation> *prop, qsizetype index, |
216 | QQuickStateOperation *op) { |
217 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
218 | auto &guard = list->at(i: index); |
219 | if (guard.object() == op) { |
220 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
221 | } else { |
222 | list->at(i: index)->setState(nullptr); |
223 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
224 | list->replace(i: index, t: OperationGuard(op, list)); |
225 | } |
226 | } |
227 | static void operations_removeLast(QQmlListProperty<QQuickStateOperation> *prop) { |
228 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
229 | list->last()->setState(nullptr); |
230 | list->removeLast(); |
231 | } |
232 | |
233 | QQuickTransitionManager transitionManager; |
234 | |
235 | SimpleActionList revertList; |
236 | QList<QQuickRevertAction> reverting; |
237 | QString extends; |
238 | mutable bool inState; |
239 | QQuickStateGroup *group; |
240 | |
241 | QQuickStateOperation::ActionList generateActionList() const; |
242 | void complete(); |
243 | }; |
244 | |
245 | QT_END_NAMESPACE |
246 | |
247 | #endif // QQUICKSTATE_P_H |
248 | |