52 #include <QVariant> |
52 #include <QVariant> |
53 #include <QtCore/qdebug.h> |
53 #include <QtCore/qdebug.h> |
54 |
54 |
55 QT_BEGIN_NAMESPACE |
55 QT_BEGIN_NAMESPACE |
56 |
56 |
57 QDeclarativeBindingData::QDeclarativeBindingData() |
57 void QDeclarativeBindingPrivate::refresh() |
58 : updating(false), enabled(false) |
58 { |
59 { |
59 Q_Q(QDeclarativeBinding); |
60 } |
60 q->update(); |
61 |
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62 QDeclarativeBindingData::~QDeclarativeBindingData() |
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63 { |
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64 removeError(); |
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65 } |
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66 |
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67 void QDeclarativeBindingData::refresh() |
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68 { |
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69 if (enabled && !updating && q) { |
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70 QDeclarativeBinding *b = static_cast<QDeclarativeBinding *>(QDeclarativeExpressionPrivate::get(q)); |
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71 b->update(); |
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72 } |
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73 } |
61 } |
74 |
62 |
75 QDeclarativeBindingPrivate::QDeclarativeBindingPrivate() |
63 QDeclarativeBindingPrivate::QDeclarativeBindingPrivate() |
76 : QDeclarativeExpressionPrivate(new QDeclarativeBindingData) |
64 : updating(false), enabled(false), deleted(0) |
77 { |
65 { |
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66 } |
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67 |
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68 QDeclarativeBindingPrivate::~QDeclarativeBindingPrivate() |
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69 { |
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70 if (deleted) *deleted = true; |
78 } |
71 } |
79 |
72 |
80 QDeclarativeBinding::QDeclarativeBinding(void *data, QDeclarativeRefCount *rc, QObject *obj, |
73 QDeclarativeBinding::QDeclarativeBinding(void *data, QDeclarativeRefCount *rc, QObject *obj, |
81 QDeclarativeContextData *ctxt, const QString &url, int lineNumber, |
74 QDeclarativeContextData *ctxt, const QString &url, int lineNumber, |
82 QObject *parent) |
75 QObject *parent) |
107 } |
100 } |
108 |
101 |
109 void QDeclarativeBinding::setTarget(const QDeclarativeProperty &prop) |
102 void QDeclarativeBinding::setTarget(const QDeclarativeProperty &prop) |
110 { |
103 { |
111 Q_D(QDeclarativeBinding); |
104 Q_D(QDeclarativeBinding); |
112 d->bindingData()->property = prop; |
105 d->property = prop; |
113 |
106 |
114 update(); |
107 update(); |
115 } |
108 } |
116 |
109 |
117 QDeclarativeProperty QDeclarativeBinding::property() const |
110 QDeclarativeProperty QDeclarativeBinding::property() const |
118 { |
111 { |
119 Q_D(const QDeclarativeBinding); |
112 Q_D(const QDeclarativeBinding); |
120 return d->bindingData()->property; |
113 return d->property; |
121 } |
114 } |
122 |
115 |
123 void QDeclarativeBinding::update(QDeclarativePropertyPrivate::WriteFlags flags) |
116 void QDeclarativeBinding::update(QDeclarativePropertyPrivate::WriteFlags flags) |
124 { |
117 { |
125 Q_D(QDeclarativeBinding); |
118 Q_D(QDeclarativeBinding); |
126 |
119 |
127 QDeclarativeBindingData *data = d->bindingData(); |
120 if (!d->enabled || !d->context() || !d->context()->isValid()) |
128 |
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129 if (!data->enabled || !data->context() || !data->context()->isValid()) |
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130 return; |
121 return; |
131 |
122 |
132 data->addref(); |
123 if (!d->updating) { |
133 |
124 d->updating = true; |
134 if (!data->updating) { |
125 bool wasDeleted = false; |
135 data->updating = true; |
126 d->deleted = &wasDeleted; |
136 |
127 |
137 if (data->property.propertyType() == qMetaTypeId<QDeclarativeBinding *>()) { |
128 if (d->property.propertyType() == qMetaTypeId<QDeclarativeBinding *>()) { |
138 |
129 |
139 int idx = data->property.index(); |
130 int idx = d->property.index(); |
140 Q_ASSERT(idx != -1); |
131 Q_ASSERT(idx != -1); |
141 |
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142 |
132 |
143 QDeclarativeBinding *t = this; |
133 QDeclarativeBinding *t = this; |
144 int status = -1; |
134 int status = -1; |
145 void *a[] = { &t, 0, &status, &flags }; |
135 void *a[] = { &t, 0, &status, &flags }; |
146 QMetaObject::metacall(data->property.object(), |
136 QMetaObject::metacall(d->property.object(), |
147 QMetaObject::WriteProperty, |
137 QMetaObject::WriteProperty, |
148 idx, a); |
138 idx, a); |
149 |
139 |
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140 if (wasDeleted) |
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141 return; |
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142 |
150 } else { |
143 } else { |
151 QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(data->context()->engine); |
144 QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(d->context()->engine); |
152 |
145 |
153 bool isUndefined = false; |
146 bool isUndefined = false; |
154 QVariant value; |
147 QVariant value; |
155 |
148 |
156 QScriptValue scriptValue = d->scriptValue(0, &isUndefined); |
149 QScriptValue scriptValue = d->scriptValue(0, &isUndefined); |
157 if (data->property.propertyTypeCategory() == QDeclarativeProperty::List) { |
150 if (wasDeleted) |
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151 return; |
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152 |
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153 if (d->property.propertyTypeCategory() == QDeclarativeProperty::List) { |
158 value = ep->scriptValueToVariant(scriptValue, qMetaTypeId<QList<QObject *> >()); |
154 value = ep->scriptValueToVariant(scriptValue, qMetaTypeId<QList<QObject *> >()); |
159 } else if (scriptValue.isNull() && |
155 } else if (scriptValue.isNull() && |
160 data->property.propertyTypeCategory() == QDeclarativeProperty::Object) { |
156 d->property.propertyTypeCategory() == QDeclarativeProperty::Object) { |
161 value = QVariant::fromValue((QObject *)0); |
157 value = QVariant::fromValue((QObject *)0); |
162 } else { |
158 } else { |
163 value = ep->scriptValueToVariant(scriptValue, data->property.propertyType()); |
159 value = ep->scriptValueToVariant(scriptValue, d->property.propertyType()); |
164 if (value.userType() == QMetaType::QObjectStar && !qvariant_cast<QObject*>(value)) { |
160 if (value.userType() == QMetaType::QObjectStar && !qvariant_cast<QObject*>(value)) { |
165 // If the object is null, we extract the predicted type. While this isn't |
161 // If the object is null, we extract the predicted type. While this isn't |
166 // 100% reliable, in many cases it gives us better error messages if we |
162 // 100% reliable, in many cases it gives us better error messages if we |
167 // assign this null-object to an incompatible property |
163 // assign this null-object to an incompatible property |
168 int type = ep->objectClass->objectType(scriptValue); |
164 int type = ep->objectClass->objectType(scriptValue); |
170 value = QVariant(type, (void *)&o); |
166 value = QVariant(type, (void *)&o); |
171 } |
167 } |
172 } |
168 } |
173 |
169 |
174 |
170 |
175 if (data->error.isValid()) { |
171 if (d->error.isValid()) { |
176 |
172 |
177 } else if (isUndefined && data->property.isResettable()) { |
173 } else if (isUndefined && d->property.isResettable()) { |
178 |
174 |
179 data->property.reset(); |
175 d->property.reset(); |
180 |
176 |
181 } else if (isUndefined && data->property.propertyType() == qMetaTypeId<QVariant>()) { |
177 } else if (isUndefined && d->property.propertyType() == qMetaTypeId<QVariant>()) { |
182 |
178 |
183 QDeclarativePropertyPrivate::write(data->property, QVariant(), flags); |
179 QDeclarativePropertyPrivate::write(d->property, QVariant(), flags); |
184 |
180 |
185 } else if (isUndefined) { |
181 } else if (isUndefined) { |
186 |
182 |
187 QUrl url = QUrl(data->url); |
183 QUrl url = QUrl(d->url); |
188 int line = data->line; |
184 int line = d->line; |
189 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
185 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
190 |
186 |
191 data->error.setUrl(url); |
187 d->error.setUrl(url); |
192 data->error.setLine(line); |
188 d->error.setLine(line); |
193 data->error.setColumn(-1); |
189 d->error.setColumn(-1); |
194 data->error.setDescription(QLatin1String("Unable to assign [undefined] to ") |
190 d->error.setDescription(QLatin1String("Unable to assign [undefined] to ") + |
195 + QLatin1String(QMetaType::typeName(data->property.propertyType())) |
191 QLatin1String(QMetaType::typeName(d->property.propertyType())) + |
196 + QLatin1String(" ") + data->property.name()); |
192 QLatin1String(" ") + d->property.name()); |
197 |
193 |
198 } else if (!scriptValue.isRegExp() && scriptValue.isFunction()) { |
194 } else if (!scriptValue.isRegExp() && scriptValue.isFunction()) { |
199 |
195 |
200 QUrl url = QUrl(data->url); |
196 QUrl url = QUrl(d->url); |
201 int line = data->line; |
197 int line = d->line; |
202 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
198 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
203 |
199 |
204 data->error.setUrl(url); |
200 d->error.setUrl(url); |
205 data->error.setLine(line); |
201 d->error.setLine(line); |
206 data->error.setColumn(-1); |
202 d->error.setColumn(-1); |
207 data->error.setDescription(QLatin1String("Unable to assign a function to a property.")); |
203 d->error.setDescription(QLatin1String("Unable to assign a function to a property.")); |
208 |
204 |
209 } else if (data->property.object() && |
205 } else if (d->property.object() && |
210 !QDeclarativePropertyPrivate::write(data->property, value, flags)) { |
206 !QDeclarativePropertyPrivate::write(d->property, value, flags)) { |
211 |
207 |
212 QUrl url = QUrl(data->url); |
208 if (wasDeleted) |
213 int line = data->line; |
209 return; |
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210 |
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211 QUrl url = QUrl(d->url); |
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212 int line = d->line; |
214 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
213 if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); |
215 |
214 |
216 const char *valueType = 0; |
215 const char *valueType = 0; |
217 if (value.userType() == QVariant::Invalid) valueType = "null"; |
216 if (value.userType() == QVariant::Invalid) valueType = "null"; |
218 else valueType = QMetaType::typeName(value.userType()); |
217 else valueType = QMetaType::typeName(value.userType()); |
219 |
218 |
220 data->error.setUrl(url); |
219 d->error.setUrl(url); |
221 data->error.setLine(line); |
220 d->error.setLine(line); |
222 data->error.setColumn(-1); |
221 d->error.setColumn(-1); |
223 data->error.setDescription(QLatin1String("Unable to assign ") + |
222 d->error.setDescription(QLatin1String("Unable to assign ") + |
224 QLatin1String(valueType) + |
223 QLatin1String(valueType) + |
225 QLatin1String(" to ") + |
224 QLatin1String(" to ") + |
226 QLatin1String(QMetaType::typeName(data->property.propertyType()))); |
225 QLatin1String(QMetaType::typeName(d->property.propertyType()))); |
227 } |
226 } |
228 |
227 |
229 if (data->error.isValid()) { |
228 if (wasDeleted) |
230 if (!data->addError(ep)) ep->warning(this->error()); |
229 return; |
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230 |
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231 if (d->error.isValid()) { |
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232 if (!d->addError(ep)) ep->warning(this->error()); |
231 } else { |
233 } else { |
232 data->removeError(); |
234 d->removeError(); |
233 } |
235 } |
234 } |
236 } |
235 |
237 |
236 data->updating = false; |
238 d->updating = false; |
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239 d->deleted = 0; |
237 } else { |
240 } else { |
238 qmlInfo(data->property.object()) << tr("Binding loop detected for property \"%1\"").arg(data->property.name()); |
241 qmlInfo(d->property.object()) << tr("Binding loop detected for property \"%1\"").arg(d->property.name()); |
239 } |
242 } |
240 |
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241 data->release(); |
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242 } |
243 } |
243 |
244 |
244 void QDeclarativeBindingPrivate::emitValueChanged() |
245 void QDeclarativeBindingPrivate::emitValueChanged() |
245 { |
246 { |
246 Q_Q(QDeclarativeBinding); |
247 Q_Q(QDeclarativeBinding); |
248 } |
249 } |
249 |
250 |
250 void QDeclarativeBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags) |
251 void QDeclarativeBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags) |
251 { |
252 { |
252 Q_D(QDeclarativeBinding); |
253 Q_D(QDeclarativeBinding); |
253 d->bindingData()->enabled = e; |
254 d->enabled = e; |
254 setNotifyOnValueChanged(e); |
255 setNotifyOnValueChanged(e); |
255 |
256 |
256 QDeclarativeAbstractBinding::setEnabled(e, flags); |
257 QDeclarativeAbstractBinding::setEnabled(e, flags); |
257 |
258 |
258 if (e) { |
259 if (e) { |
259 addToObject(d->bindingData()->property.object()); |
260 addToObject(d->property.object()); |
260 update(flags); |
261 update(flags); |
261 } else { |
262 } else { |
262 removeFromObject(); |
263 removeFromObject(); |
263 } |
264 } |
264 } |
265 } |
265 |
266 |
266 int QDeclarativeBinding::propertyIndex() |
267 int QDeclarativeBinding::propertyIndex() |
267 { |
268 { |
268 Q_D(QDeclarativeBinding); |
269 Q_D(QDeclarativeBinding); |
269 return QDeclarativePropertyPrivate::bindingIndex(d->bindingData()->property); |
270 return QDeclarativePropertyPrivate::bindingIndex(d->property); |
270 } |
271 } |
271 |
272 |
272 bool QDeclarativeBinding::enabled() const |
273 bool QDeclarativeBinding::enabled() const |
273 { |
274 { |
274 Q_D(const QDeclarativeBinding); |
275 Q_D(const QDeclarativeBinding); |
275 |
276 |
276 return d->bindingData()->enabled; |
277 return d->enabled; |
277 } |
278 } |
278 |
279 |
279 QString QDeclarativeBinding::expression() const |
280 QString QDeclarativeBinding::expression() const |
280 { |
281 { |
281 return QDeclarativeExpression::expression(); |
282 return QDeclarativeExpression::expression(); |