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39 | |
40 | #ifndef QQUICKSTATE_P_H |
41 | #define QQUICKSTATE_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 "qquickstate_p.h" |
55 | |
56 | #include "qquicktransitionmanager_p_p.h" |
57 | |
58 | #include <private/qqmlproperty_p.h> |
59 | #include <private/qqmlguard_p.h> |
60 | |
61 | #include <private/qqmlbinding_p.h> |
62 | |
63 | #include <private/qobject_p.h> |
64 | |
65 | QT_BEGIN_NAMESPACE |
66 | |
67 | class QQuickSimpleAction |
68 | { |
69 | public: |
70 | enum State { StartState, EndState }; |
71 | QQuickSimpleAction(const QQuickStateAction &a, State state = StartState) |
72 | { |
73 | m_property = a.property; |
74 | m_specifiedObject = a.specifiedObject; |
75 | m_specifiedProperty = a.specifiedProperty; |
76 | m_event = a.event; |
77 | if (state == StartState) { |
78 | m_value = a.fromValue; |
79 | if (QQmlPropertyPrivate::binding(that: m_property)) { |
80 | m_binding = QQmlPropertyPrivate::binding(that: m_property); |
81 | } |
82 | m_reverseEvent = true; |
83 | } else { |
84 | m_value = a.toValue; |
85 | m_binding = a.toBinding; |
86 | m_reverseEvent = false; |
87 | } |
88 | } |
89 | |
90 | ~QQuickSimpleAction() |
91 | { |
92 | } |
93 | |
94 | QQuickSimpleAction(const QQuickSimpleAction &other) |
95 | : m_property(other.m_property), |
96 | m_value(other.m_value), |
97 | m_binding(other.binding()), |
98 | m_specifiedObject(other.m_specifiedObject), |
99 | m_specifiedProperty(other.m_specifiedProperty), |
100 | m_event(other.m_event), |
101 | m_reverseEvent(other.m_reverseEvent) |
102 | { |
103 | } |
104 | |
105 | QQuickSimpleAction &operator =(const QQuickSimpleAction &other) |
106 | { |
107 | m_property = other.m_property; |
108 | m_value = other.m_value; |
109 | m_binding = other.binding(); |
110 | m_specifiedObject = other.m_specifiedObject; |
111 | m_specifiedProperty = other.m_specifiedProperty; |
112 | m_event = other.m_event; |
113 | m_reverseEvent = other.m_reverseEvent; |
114 | |
115 | return *this; |
116 | } |
117 | |
118 | void setProperty(const QQmlProperty &property) |
119 | { |
120 | m_property = property; |
121 | } |
122 | |
123 | const QQmlProperty &property() const |
124 | { |
125 | return m_property; |
126 | } |
127 | |
128 | void setValue(const QVariant &value) |
129 | { |
130 | m_value = value; |
131 | } |
132 | |
133 | const QVariant &value() const |
134 | { |
135 | return m_value; |
136 | } |
137 | |
138 | void setBinding(QQmlAbstractBinding *binding) |
139 | { |
140 | m_binding = binding; |
141 | } |
142 | |
143 | QQmlAbstractBinding *binding() const |
144 | { |
145 | return m_binding.data(); |
146 | } |
147 | |
148 | QObject *specifiedObject() const |
149 | { |
150 | return m_specifiedObject; |
151 | } |
152 | |
153 | const QString &specifiedProperty() const |
154 | { |
155 | return m_specifiedProperty; |
156 | } |
157 | |
158 | QQuickStateActionEvent *event() const |
159 | { |
160 | return m_event; |
161 | } |
162 | |
163 | bool reverseEvent() const |
164 | { |
165 | return m_reverseEvent; |
166 | } |
167 | |
168 | private: |
169 | QQmlProperty m_property; |
170 | QVariant m_value; |
171 | QQmlAbstractBinding::Ptr m_binding; |
172 | QObject *m_specifiedObject; |
173 | QString m_specifiedProperty; |
174 | QQuickStateActionEvent *m_event; |
175 | bool m_reverseEvent; |
176 | }; |
177 | |
178 | class QQuickRevertAction |
179 | { |
180 | public: |
181 | QQuickRevertAction() : event(nullptr) {} |
182 | QQuickRevertAction(const QQmlProperty &prop) : property(prop), event(nullptr) {} |
183 | QQuickRevertAction(QQuickStateActionEvent *e) : event(e) {} |
184 | QQmlProperty property; |
185 | QQuickStateActionEvent *event; |
186 | }; |
187 | |
188 | class QQuickStateOperationPrivate : public QObjectPrivate |
189 | { |
190 | Q_DECLARE_PUBLIC(QQuickStateOperation) |
191 | |
192 | public: |
193 | |
194 | QQuickStateOperationPrivate() |
195 | : m_state(nullptr) {} |
196 | |
197 | QQuickState *m_state; |
198 | }; |
199 | |
200 | class QQuickStatePrivate : public QObjectPrivate |
201 | { |
202 | Q_DECLARE_PUBLIC(QQuickState) |
203 | |
204 | public: |
205 | QQuickStatePrivate() |
206 | : when(false), whenKnown(false), named(false), inState(false), group(nullptr) {} |
207 | |
208 | typedef QList<QQuickSimpleAction> SimpleActionList; |
209 | |
210 | QString name; |
211 | bool when; |
212 | bool whenKnown; |
213 | bool named; |
214 | |
215 | struct OperationGuard : public QQmlGuard<QQuickStateOperation> |
216 | { |
217 | OperationGuard(QObject *obj, QList<OperationGuard> *l) : list(l) { |
218 | setObject(static_cast<QQuickStateOperation *>(obj)); |
219 | } |
220 | QList<OperationGuard> *list; |
221 | void objectDestroyed(QQuickStateOperation *) override { |
222 | // we assume priv will always be destroyed after objectDestroyed calls |
223 | list->removeOne(t: *this); |
224 | } |
225 | }; |
226 | QList<OperationGuard> operations; |
227 | |
228 | static void operations_append(QQmlListProperty<QQuickStateOperation> *prop, QQuickStateOperation *op) { |
229 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
230 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
231 | list->append(t: OperationGuard(op, list)); |
232 | } |
233 | static void operations_clear(QQmlListProperty<QQuickStateOperation> *prop) { |
234 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
235 | for (auto &e : *list) |
236 | e->setState(nullptr); |
237 | list->clear(); |
238 | } |
239 | static int operations_count(QQmlListProperty<QQuickStateOperation> *prop) { |
240 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
241 | return list->count(); |
242 | } |
243 | static QQuickStateOperation *operations_at(QQmlListProperty<QQuickStateOperation> *prop, int index) { |
244 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
245 | return list->at(i: index); |
246 | } |
247 | static void operations_replace(QQmlListProperty<QQuickStateOperation> *prop, int index, |
248 | QQuickStateOperation *op) { |
249 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
250 | auto &guard = list->at(i: index); |
251 | if (guard.object() == op) { |
252 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
253 | } else { |
254 | list->at(i: index)->setState(nullptr); |
255 | op->setState(qobject_cast<QQuickState*>(object: prop->object)); |
256 | list->replace(i: index, t: OperationGuard(op, list)); |
257 | } |
258 | } |
259 | static void operations_removeLast(QQmlListProperty<QQuickStateOperation> *prop) { |
260 | QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data); |
261 | list->last()->setState(nullptr); |
262 | list->removeLast(); |
263 | } |
264 | |
265 | QQuickTransitionManager transitionManager; |
266 | |
267 | SimpleActionList revertList; |
268 | QList<QQuickRevertAction> reverting; |
269 | QString extends; |
270 | mutable bool inState; |
271 | QQuickStateGroup *group; |
272 | |
273 | QQuickStateOperation::ActionList generateActionList() const; |
274 | void complete(); |
275 | }; |
276 | |
277 | QT_END_NAMESPACE |
278 | |
279 | #endif // QQUICKSTATE_P_H |
280 | |