i_slint_compiler/passes/
collect_subcomponents.rs

1// Copyright © SixtyFPS GmbH <info@slint.dev>
2// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
3
4//! This pass fills the root component used_types.sub_components
5
6#![allow(clippy::mutable_key_type)] // Component identity keys intentionally wrap interior mutability
7
8use by_address::ByAddress;
9
10use crate::langtype::ElementType;
11use crate::object_tree::*;
12use std::collections::HashSet;
13use std::rc::Rc;
14
15/// Fill the root_component's used_types.sub_components
16pub fn collect_subcomponents(doc: &Document) {
17    let mut result = Vec::new();
18    let mut hash = HashSet::new();
19    for component in doc.exported_roots().chain(doc.popup_menu_impl.iter().cloned()) {
20        collect_subcomponents_recursive(&component, &mut result, &mut hash);
21    }
22    doc.used_types.borrow_mut().sub_components = result;
23}
24
25fn collect_subcomponents_recursive(
26    component: &Rc<Component>,
27    result: &mut Vec<Rc<Component>>,
28    hash: &mut HashSet<ByAddress<Rc<Component>>>,
29) {
30    hash.insert(ByAddress(component.clone()));
31    recurse_elem(&component.root_element, &(), &mut |elem: &ElementRc, &()| {
32        let base_comp = match &elem.borrow().base_type {
33            ElementType::Component(base_comp) => {
34                if hash.contains(&ByAddress(base_comp.clone())) {
35                    return;
36                }
37                base_comp.clone()
38            }
39            _ => return,
40        };
41        collect_subcomponents_recursive(&base_comp, result, hash);
42        if base_comp.parent_element().is_some() {
43            // This is not a sub-component, but is a repeated component
44            return;
45        }
46        result.push(base_comp);
47    });
48    for popup in component.popup_windows.borrow().iter() {
49        collect_subcomponents_recursive(&popup.component, result, hash);
50    }
51}
i_slint_compiler/passes/collect_subcomponents.rs

i_slint_compiler/passes/
collect_subcomponents.rs
