migrations/egui
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Add option to select collapsing headers (#623)

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* Add collapsing header select as selectable label

* Modified Tree demo adding selectable example

* Update egui/src/containers/collapsing_header.rs

Selected is not linked to selectable

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

* Update egui/src/containers/collapsing_header.rs

Description example

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

* Changing example without name clashing

* Fixing merge issue (ah I miss P4 sometimes)

* Fixing doctest example

* Add possibility to show background to a single one

* Fixing clippy test

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
This commit is contained in:
gents83
2021-08-20 19:04:13 +02:00
committed by GitHub
parent 04b3921923
commit 68ed22ab6f
2 changed files with 111 additions and 17 deletions
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59
egui_demo_lib/src/apps/demo/misc_demo_window.rs
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@@ -339,28 +339,53 @@ enum Action {
#[derive(Clone, Default)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
struct Tree(Vec<Tree>);
struct Tree(String, SubTree);
impl Tree {
pub fn demo() -> Self {
Self(vec![
Tree(vec![Tree::default(); 4]),
Tree(vec![Tree(vec![Tree::default(); 2]); 3]),
])
Self(
String::from("root"),
SubTree(vec![
SubTree(vec![SubTree::default(); 4]),
SubTree(vec![SubTree(vec![SubTree::default(); 2]); 3]),
]),
)
}
pub fn ui(&mut self, ui: &mut Ui) -> Action {
self.ui_impl(ui, 0, "root")
self.1.ui(ui, 0, "root", &mut self.0)
}
}
fn ui_impl(&mut self, ui: &mut Ui, depth: usize, name: &str) -> Action {
CollapsingHeader::new(name)
#[derive(Clone, Default)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
struct SubTree(Vec<SubTree>);
impl SubTree {
pub fn ui(
&mut self,
ui: &mut Ui,
depth: usize,
name: &str,
selected_name: &mut String,
) -> Action {
let response = CollapsingHeader::new(name)
.default_open(depth < 1)
.show(ui, |ui| self.children_ui(ui, depth))
.body_returned
.unwrap_or(Action::Keep)
.selectable(true)
.selected(selected_name.as_str() == name)
.show(ui, |ui| self.children_ui(ui, name, depth, selected_name));
if response.header_response.clicked() {
*selected_name = name.to_string();
}
response.body_returned.unwrap_or(Action::Keep)
}
fn children_ui(&mut self, ui: &mut Ui, depth: usize) -> Action {
fn children_ui(
&mut self,
ui: &mut Ui,
parent_name: &str,
depth: usize,
selected_name: &mut String,
) -> Action {
if depth > 0
&& ui
.add(Button::new("delete").text_color(Color32::RED))
@@ -374,7 +399,13 @@ impl Tree {
.into_iter()
.enumerate()
.filter_map(|(i, mut tree)| {
if tree.ui_impl(ui, depth + 1, &format!("child #{}", i)) == Action::Keep {
if tree.ui(
ui,
depth + 1,
&format!("{}/{}", parent_name, i),
selected_name,
) == Action::Keep
{
Some(tree)
} else {
None
@@ -383,7 +414,7 @@ impl Tree {
.collect();
if ui.button("+").clicked() {
self.0.push(Tree::default());
self.0.push(SubTree::default());
}
Action::Keep