Struct gtk::TreeSelection[−][src]

pub struct TreeSelection(_);

Expand description

The TreeSelection object is a helper object to manage the selection for a TreeView widget. The TreeSelection object is automatically created when a new TreeView widget is created, and cannot exist independently of this widget. The primary reason the TreeSelection objects exists is for cleanliness of code and API. That is, there is no conceptual reason all these functions could not be methods on the TreeView widget instead of a separate function.

The TreeSelection object is gotten from a TreeView by calling TreeViewExt::selection(). It can be manipulated to check the selection status of the tree, as well as select and deselect individual rows. Selection is done completely view side. As a result, multiple views of the same model can have completely different selections. Additionally, you cannot change the selection of a row on the model that is not currently displayed by the view without expanding its parents first.

One of the important things to remember when monitoring the selection of a view is that the signal::TreeSelection::changed signal is mostly a hint. That is, it may only emit one signal when a range of rows is selected. Additionally, it may on occasion emit a signal::TreeSelection::changed signal when nothing has happened (mostly as a result of programmers calling select_row on an already selected row).

Implements

TreeSelectionExt, glib::ObjectExt

Trait Implementations

impl Clone for TreeSelection

fn clone(&self) -> TreeSelection

Returns a copy of the value. Read more

1.0.0[src]

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

Performs copy-assignment from source. Read more

impl Debug for TreeSelection

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

Formats the value using the given formatter. Read more

impl Display for TreeSelection

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

Formats the value using the given formatter. Read more

impl Hash for TreeSelection

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more

1.3.0[src]

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

impl Ord for TreeSelection

fn cmp(&self, other: &TreeSelection) -> Ordering

This method returns an Ordering between self and other. Read more

1.21.0[src]

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values. Read more

1.21.0[src]

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values. Read more

1.50.0[src]

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval. Read more

impl ParentClassIs for TreeSelection

type Parent = Object

impl<T: ObjectType> PartialEq<T> for TreeSelection

fn eq(&self, other: &T) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0[src]

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<T: ObjectType> PartialOrd<T> for TreeSelection

fn partial_cmp(&self, other: &T) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

1.0.0[src]

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more

1.0.0[src]

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0[src]

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more

1.0.0[src]

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl StaticType for TreeSelection

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for TreeSelection

impl StructuralEq for TreeSelection

Auto Trait Implementations

impl RefUnwindSafe for TreeSelection

impl !Send for TreeSelection

impl !Sync for TreeSelection

impl Unpin for TreeSelection

impl UnwindSafe for TreeSelection

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized,

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> Cast for T where
    T: ObjectType,

fn upcast<T>(self) -> T where
    Self: IsA<T>,
    T: ObjectType,

Upcasts an object to a superclass or interface T. Read more

fn upcast_ref<T>(&self) -> &T where
    Self: IsA<T>,
    T: ObjectType,

Upcasts an object to a reference of its superclass or interface T. Read more

fn downcast<T>(self) -> Result<T, Self> where
    Self: CanDowncast<T>,
    T: ObjectType,

Tries to downcast to a subclass or interface implementor T. Read more

fn downcast_ref<T>(&self) -> Option<&T> where
    Self: CanDowncast<T>,
    T: ObjectType,

Tries to downcast to a reference of its subclass or interface implementor T. Read more

fn dynamic_cast<T>(self) -> Result<T, Self> where
    T: ObjectType,

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

fn dynamic_cast_ref<T>(&self) -> Option<&T> where
    T: ObjectType,

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

unsafe fn unsafe_cast<T>(self) -> T where
    T: ObjectType,

Casts to T unconditionally. Read more

unsafe fn unsafe_cast_ref<T>(&self) -> &T where
    T: ObjectType,

Casts to &T unconditionally. Read more

impl<T> From<T> for T

pub fn from(t: T) -> T

Performs the conversion.

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

pub fn into(self) -> U

Performs the conversion.

impl<T> ObjectExt for T where
    T: ObjectType,

pub fn is<U>(&self) -> bool where
    U: StaticType,

Returns true if the object is an instance of (can be cast to) T.

pub fn type_(&self) -> Type

pub fn object_class(&self) -> &Class<Object>

pub fn class(&self) -> &Class<T> where
    T: IsClass,

pub fn class_of<U>(&self) -> Option<&Class<U>> where
    U: IsClass,

pub fn interface<U>(&self) -> Option<InterfaceRef<'_, U>> where
    U: IsInterface,

pub fn set_properties(
    &self, 
    property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>

pub fn set_properties_from_value(
    &self, 
    property_values: &[(&str, Value)]
) -> Result<(), BoolError>

pub fn set_property<'a, N, V>(
    &self, 
    property_name: N, 
    value: V
) -> Result<(), BoolError> where
    V: ToValue,
    N: Into<&'a str>,

pub fn set_property_from_value<'a, N>(
    &self, 
    property_name: N, 
    value: &Value
) -> Result<(), BoolError> where
    N: Into<&'a str>,

pub fn property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
    N: Into<&'a str>,

pub unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
    QD: 'static,

Safety Read more

pub unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>> where
    QD: 'static,

Safety Read more

pub unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
    QD: 'static,

Safety Read more

pub unsafe fn set_data<QD>(&self, key: &str, value: QD) where
    QD: 'static,

Safety Read more

pub unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>> where
    QD: 'static,

Safety Read more

pub unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
    QD: 'static,

Safety Read more

pub fn block_signal(&self, handler_id: &SignalHandlerId)

pub fn unblock_signal(&self, handler_id: &SignalHandlerId)

pub fn stop_signal_emission(&self, signal_name: &str)

pub fn disconnect(&self, handler_id: SignalHandlerId)

pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
    F: 'static + Fn(&T, &ParamSpec) + Send + Sync,

pub fn connect_notify_local<F>(
    &self, 
    name: Option<&str>, 
    f: F
) -> SignalHandlerId where
    F: 'static + Fn(&T, &ParamSpec),

pub unsafe fn connect_notify_unsafe<F>(
    &self, 
    name: Option<&str>, 
    f: F
) -> SignalHandlerId where
    F: Fn(&T, &ParamSpec),

pub fn notify<'a, N>(&self, property_name: N) where
    N: Into<&'a str>,

pub fn notify_by_pspec(&self, pspec: &ParamSpec)

pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
    N: Into<&'a str>,

pub fn property_type<'a, N>(&self, property_name: N) -> Option<Type> where
    N: Into<&'a str>,

pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
    N: Into<&'a str>,

pub fn list_properties(&self) -> Vec<ParamSpec, Global>

pub fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

pub fn connect<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
    N: Into<&'a str>,

pub fn connect_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Same as connect but takes a SignalId instead of a signal name.

pub fn connect_local<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + 'static,
    N: Into<&'a str>,

pub fn connect_local_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + 'static,

Same as connect_local but takes a SignalId instead of a signal name.

pub unsafe fn connect_unsafe<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value>,
    N: Into<&'a str>,

pub unsafe fn connect_unsafe_id<F>(
    &self, 
    signal_id: SignalId, 
    details: Option<Quark>, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value>,

Same as connect_unsafe but takes a SignalId instead of a signal name.

pub fn emit(
    &self, 
    signal_id: SignalId, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError>

Emit signal by signal id.

pub fn emit_with_details(
    &self, 
    signal_id: SignalId, 
    details: Quark, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError>

Emit signal with details by signal id.

pub fn emit_by_name<'a, N>(
    &self, 
    signal_name: N, 
    args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
    N: Into<&'a str>,

Emit signal by it’s name.

pub fn downgrade(&self) -> WeakRef<T>

pub fn bind_property<'a, O, N, M>(
    &'a self, 
    source_property: N, 
    target: &'a O, 
    target_property: M
) -> BindingBuilder<'a> where
    O: ObjectType,
    N: Into<&'a str>,
    M: Into<&'a str>,

pub fn ref_count(&self) -> u32

pub fn emit_with_values(
    &self, 
    signal_id: SignalId, 
    args: &[Value]
) -> Result<Option<Value>, BoolError>

Same as emit but takes Value for the arguments.

pub fn emit_by_name_with_values<'a, N>(
    &self, 
    signal_name: N, 
    args: &[Value]
) -> Result<Option<Value>, BoolError> where
    N: Into<&'a str>,

Same as emit_by_name but takes Value for the arguments.

pub fn emit_with_details_and_values(
    &self, 
    signal_id: SignalId, 
    details: Quark, 
    args: &[Value]
) -> Result<Option<Value>, BoolError>

Same as emit_with_details but takes Value for the arguments.

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

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToSendValue for T where
    T: Send + ToValue + ?Sized,

pub fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.

impl<T> ToString for T where
    T: Display + ?Sized,

pub default fn to_string(&self) -> String

Converts the given value to a String. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<Super, Sub> CanDowncast<Sub> for Super where
    Sub: IsA<Super>,
    Super: IsA<Super>,

impl<'a, T, C> FromValueOptional<'a> for T where
    C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>,
    T: FromValue<'a, Checker = C>,