{"record":{"id":"4a525feae7c53f36","repo":"slint-ui/slint","slug":"the-weak-doesn-t-hold-a-valid-component","errorCode":null,"errorMessage":"The Weak doesn't hold a valid component","messagePattern":"The Weak doesn't hold a valid component","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/core/api.rs","lineNumber":1218,"sourceCode":"                return None;\n            }\n            T::upgrade_from_weak_inner(&self.inner)\n        }\n\n        /// Convenience function that returns a new strongly referenced component if\n        /// some other instance still holds a strong reference and the current thread\n        /// is the thread that created this component.\n        /// Otherwise, this function panics.\n        #[track_caller]\n        pub fn unwrap(&self) -> T {\n            #[cfg(feature = \"std\")]\n            if std::thread::current().id() != self.thread {\n                panic!(\n                    \"Trying to upgrade a Weak from a different thread than the one it belongs to\"\n                );\n            }\n            T::upgrade_from_weak_inner(&self.inner)\n                .expect(\"The Weak doesn't hold a valid component\")\n        }\n\n        /// A helper function to allow creation on `component_factory::Component` from\n        /// a `ComponentHandle`\n        pub(crate) fn inner(&self) -> T::WeakInner {\n            self.inner.clone()\n        }\n\n        /// Convenience function that combines [`invoke_from_event_loop()`] with [`Self::upgrade()`]\n        ///\n        /// The given functor will be added to an internal queue and will wake the event loop.\n        /// On the next iteration of the event loop, the functor will be executed with a `T` as an argument.\n        ///\n        /// If the component was dropped because there are no more strong reference to the component,\n        /// the functor will not be called.\n        ///\n        /// # Example\n        /// ```rust","sourceCodeStart":1200,"sourceCodeEnd":1236,"githubUrl":"https://github.com/slint-ui/slint/blob/3fd8f2ec03c2aa8a95d5f4b9daa299c7b8bf4016/internal/core/api.rs#L1200-L1236","documentation":"Error \"The Weak doesn't hold a valid component\" thrown in slint-ui/slint.","triggerScenarios":"Thrown at internal/core/api.rs:1218 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Keep a strong reference to the component alive while using Weak.","Upgrade the Weak to a strong reference before use and handle None."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"3fd8f2ec03c2aa8a95d5f4b9daa299c7b8bf4016","analyzedAt":"2026-08-19T23:23:16.610Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}