Struct gtk4::TreeListModel[][src]

pub struct TreeListModel(_);
Expand description

TreeListModel is a list model that can create child models on demand.

Implements

glib::ObjectExt, gio::prelude::ListModelExt

Implementations

Creates a new empty TreeListModel displaying root with all rows collapsed.

root

The GListModel to use as root

passthrough

true to pass through items from the models

autoexpand

true to set the autoexpand property and expand the root model

create_func

Function to call to create the GListModel for the children of an item

Returns

a newly created TreeListModel.

Creates a new builder-pattern struct instance to construct TreeListModel objects.

This method returns an instance of TreeListModelBuilder which can be used to create TreeListModel objects.

Gets whether the model is set to automatically expand new rows that get added.

This can be either rows added by changes to the underlying models or via TreeListRow::set_expanded().

Returns

true if the model is set to autoexpand

Gets the row item corresponding to the child at index position for self’s root model.

If position is greater than the number of children in the root model, None is returned.

Do not confuse this function with row().

position

position of the child to get

Returns

the child in position

Gets the root model that self was created with.

Returns

the root model

Gets whether the model is passing through original row items.

If this function returns false, the GListModel functions for self return custom TreeListRow objects. You need to call TreeListRow::item() on these objects to get the original item.

If true, the values of the child models are passed through in their original state. You then need to call row() to get the custom TreeListRows.

Returns

true if the model is passing through original row items

Gets the row object for the given row.

If position is greater than the number of items in self, None is returned.

The row object can be used to expand and collapse rows as well as to inspect its position in the tree. See its documentation for details.

This row object is persistent and will refer to the current item as long as the row is present in self, independent of other rows being added or removed.

If self is set to not be passthrough, this function is equivalent to calling g_list_model_get_item().

Do not confuse this function with child_row().

position

the position of the row to fetch

Returns

The row item

Sets whether the model should autoexpand.

If set to true, the model will recursively expand all rows that get added to the model. This can be either rows added by changes to the underlying models or via TreeListRow::set_expanded().

autoexpand

true to make the model autoexpand its rows

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

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

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

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

Returns the type identifier of Self.

Auto Trait Implementations

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Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

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

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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

Casts to T unconditionally. Read more

Casts to &T unconditionally. Read more

Performs the conversion.

Performs the conversion.

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

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

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

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

Emit signal by signal id.

Same as emit but takes Value for the arguments.

Emit signal by its name.

Same as emit_by_name but takes Value for the arguments.

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The resulting type after obtaining ownership.

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

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The type returned in the event of a conversion error.

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The type returned in the event of a conversion error.

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