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
6use by_address::ByAddress;
7
8use crate::langtype::ElementType;
9use crate::object_tree::*;
10use std::collections::HashSet;
11use std::rc::Rc;
12
13/// Fill the root_component's used_types.sub_components
14pub fn collect_subcomponents(doc: &Document) {
15    let mut result = vec![];
16    let mut hash = HashSet::new();
17    for component in doc.exported_roots().chain(doc.popup_menu_impl.iter().cloned()) {
18        collect_subcomponents_recursive(&component, &mut result, &mut hash);
19    }
20    doc.used_types.borrow_mut().sub_components = result;
21}
22
23fn collect_subcomponents_recursive(
24    component: &Rc<Component>,
25    result: &mut Vec<Rc<Component>>,
26    hash: &mut HashSet<ByAddress<Rc<Component>>>,
27) {
28    hash.insert(ByAddress(component.clone()));
29    recurse_elem(&component.root_element, &(), &mut |elem: &ElementRc, &()| {
30        let base_comp = match &elem.borrow().base_type {
31            ElementType::Component(base_comp) => {
32                if hash.contains(&ByAddress(base_comp.clone())) {
33                    return;
34                }
35                base_comp.clone()
36            }
37            _ => return,
38        };
39        collect_subcomponents_recursive(&base_comp, result, hash);
40        if base_comp.parent_element.upgrade().is_some() {
41            // This is not a sub-component, but is a repeated component
42            return;
43        }
44        result.push(base_comp);
45    });
46    for popup in component.popup_windows.borrow().iter() {
47        collect_subcomponents_recursive(&popup.component, result, hash);
48    }
49}
i_slint_compiler/passes/collect_subcomponents.rs

i_slint_compiler/passes/
collect_subcomponents.rs
