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TreeItem

telex

Struct TreeItem 

Source 
pub struct TreeItem {
    pub label: String,
    pub icon: Option<String>,
    pub children: Vec<TreeItem>,
    pub expanded: bool,
}
Expand description

A single item in a tree view.

Fields§

§label: String

Display label for this item.

§icon: Option<String>

Optional icon displayed before the label.

§children: Vec<TreeItem>

Child items (empty for leaf nodes).

§expanded: bool

Whether this node is expanded (showing children).

Implementations§

Source§

impl TreeItem

Source

pub fn new(label: impl Into<String>) -> Self

Create a new tree item with the given label.

Examples found in repository?
examples/16_tree.rs (line 136)
132fn build_tree(expanded_paths: &[TreePath]) -> Vec<TreeItem> {
133    let is_expanded = |path: &[usize]| expanded_paths.iter().any(|p| p == path);
134
135    vec![
136        TreeItem::new("src")
137            .icon("📁")
138            .expanded(is_expanded(&[0]))
139            .child(
140                TreeItem::new("components")
141                    .icon("📁")
142                    .expanded(is_expanded(&[0, 0]))
143                    .child(TreeItem::new("button.rs").icon("📄"))
144                    .child(TreeItem::new("input.rs").icon("📄"))
145                    .child(TreeItem::new("list.rs").icon("📄")),
146            )
147            .child(
148                TreeItem::new("utils")
149                    .icon("📁")
150                    .expanded(is_expanded(&[0, 1]))
151                    .child(TreeItem::new("helpers.rs").icon("📄"))
152                    .child(TreeItem::new("macros.rs").icon("📄")),
153            )
154            .child(TreeItem::new("main.rs").icon("📄"))
155            .child(TreeItem::new("lib.rs").icon("📄")),
156        TreeItem::new("tests")
157            .icon("📁")
158            .expanded(is_expanded(&[1]))
159            .child(TreeItem::new("integration_tests.rs").icon("📄"))
160            .child(TreeItem::new("unit_tests.rs").icon("📄")),
161        TreeItem::new("Cargo.toml").icon("📦"),
162        TreeItem::new("README.md").icon("📝"),
163    ]
164}
Source

pub fn icon(self, icon: impl Into<String>) -> Self

Set the icon for this item.

Examples found in repository?
examples/16_tree.rs (line 137)
132fn build_tree(expanded_paths: &[TreePath]) -> Vec<TreeItem> {
133    let is_expanded = |path: &[usize]| expanded_paths.iter().any(|p| p == path);
134
135    vec![
136        TreeItem::new("src")
137            .icon("📁")
138            .expanded(is_expanded(&[0]))
139            .child(
140                TreeItem::new("components")
141                    .icon("📁")
142                    .expanded(is_expanded(&[0, 0]))
143                    .child(TreeItem::new("button.rs").icon("📄"))
144                    .child(TreeItem::new("input.rs").icon("📄"))
145                    .child(TreeItem::new("list.rs").icon("📄")),
146            )
147            .child(
148                TreeItem::new("utils")
149                    .icon("📁")
150                    .expanded(is_expanded(&[0, 1]))
151                    .child(TreeItem::new("helpers.rs").icon("📄"))
152                    .child(TreeItem::new("macros.rs").icon("📄")),
153            )
154            .child(TreeItem::new("main.rs").icon("📄"))
155            .child(TreeItem::new("lib.rs").icon("📄")),
156        TreeItem::new("tests")
157            .icon("📁")
158            .expanded(is_expanded(&[1]))
159            .child(TreeItem::new("integration_tests.rs").icon("📄"))
160            .child(TreeItem::new("unit_tests.rs").icon("📄")),
161        TreeItem::new("Cargo.toml").icon("📦"),
162        TreeItem::new("README.md").icon("📝"),
163    ]
164}
Source

pub fn child(self, child: TreeItem) -> Self

Add a child item.

Examples found in repository?
examples/16_tree.rs (lines 139-146)
132fn build_tree(expanded_paths: &[TreePath]) -> Vec<TreeItem> {
133    let is_expanded = |path: &[usize]| expanded_paths.iter().any(|p| p == path);
134
135    vec![
136        TreeItem::new("src")
137            .icon("📁")
138            .expanded(is_expanded(&[0]))
139            .child(
140                TreeItem::new("components")
141                    .icon("📁")
142                    .expanded(is_expanded(&[0, 0]))
143                    .child(TreeItem::new("button.rs").icon("📄"))
144                    .child(TreeItem::new("input.rs").icon("📄"))
145                    .child(TreeItem::new("list.rs").icon("📄")),
146            )
147            .child(
148                TreeItem::new("utils")
149                    .icon("📁")
150                    .expanded(is_expanded(&[0, 1]))
151                    .child(TreeItem::new("helpers.rs").icon("📄"))
152                    .child(TreeItem::new("macros.rs").icon("📄")),
153            )
154            .child(TreeItem::new("main.rs").icon("📄"))
155            .child(TreeItem::new("lib.rs").icon("📄")),
156        TreeItem::new("tests")
157            .icon("📁")
158            .expanded(is_expanded(&[1]))
159            .child(TreeItem::new("integration_tests.rs").icon("📄"))
160            .child(TreeItem::new("unit_tests.rs").icon("📄")),
161        TreeItem::new("Cargo.toml").icon("📦"),
162        TreeItem::new("README.md").icon("📝"),
163    ]
164}
Source

pub fn expanded(self, expanded: bool) -> Self

Set whether this node is expanded.

Examples found in repository?
examples/16_tree.rs (line 138)
132fn build_tree(expanded_paths: &[TreePath]) -> Vec<TreeItem> {
133    let is_expanded = |path: &[usize]| expanded_paths.iter().any(|p| p == path);
134
135    vec![
136        TreeItem::new("src")
137            .icon("📁")
138            .expanded(is_expanded(&[0]))
139            .child(
140                TreeItem::new("components")
141                    .icon("📁")
142                    .expanded(is_expanded(&[0, 0]))
143                    .child(TreeItem::new("button.rs").icon("📄"))
144                    .child(TreeItem::new("input.rs").icon("📄"))
145                    .child(TreeItem::new("list.rs").icon("📄")),
146            )
147            .child(
148                TreeItem::new("utils")
149                    .icon("📁")
150                    .expanded(is_expanded(&[0, 1]))
151                    .child(TreeItem::new("helpers.rs").icon("📄"))
152                    .child(TreeItem::new("macros.rs").icon("📄")),
153            )
154            .child(TreeItem::new("main.rs").icon("📄"))
155            .child(TreeItem::new("lib.rs").icon("📄")),
156        TreeItem::new("tests")
157            .icon("📁")
158            .expanded(is_expanded(&[1]))
159            .child(TreeItem::new("integration_tests.rs").icon("📄"))
160            .child(TreeItem::new("unit_tests.rs").icon("📄")),
161        TreeItem::new("Cargo.toml").icon("📦"),
162        TreeItem::new("README.md").icon("📝"),
163    ]
164}
Source

pub fn is_leaf(&self) -> bool

Check if this is a leaf node (no children).

Trait Implementations§

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impl Clone for TreeItem

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fn clone(&self) -> TreeItem

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TreeItem

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.