Struct gio::ListStore

source ·
#[repr(transparent)]
pub struct ListStore { /* private fields */ }
Expand description

ListStore is a simple implementation of ListModel that stores all items in memory.

It provides insertions, deletions, and lookups in logarithmic time with a fast path for the common case of iterating the list linearly.

Implements

glib::ObjectExt, ListModelExt, ListModelExtManual

Implementations§

Inserts item into self at a position to be determined by the compare_func.

The list must already be sorted before calling this function or the result is undefined. Usually you would approach this by only ever inserting items by way of this function.

This function takes a ref on item.

item

the new item

compare_func

pairwise comparison function for sorting

Returns

the position at which item was inserted

Sort the items in self according to compare_func.

compare_func

pairwise comparison function for sorting

Changes self by removing n_removals items and adding n_additions items to it. additions must contain n_additions items of type property::ListStore::item-type. None is not permitted.

This function is more efficient than insert() and remove(), because it only emits signal::ListModel::items-changed once for the change.

This function takes a ref on each item in additions.

The parameters position and n_removals must be correct (ie: position + n_removals must be less than or equal to the length of the list at the time this function is called).

position

the position at which to make the change

n_removals

the number of items to remove

additions

the items to add

Appends all elements in a slice to the ListStore.

Available on crate feature v2_74 only.

Looks up the given item in the list store by looping over the items and comparing them with equal_func until the first occurrence of item which matches. If item was not found, then position will not be set, and this method will return false.

item

an item

equal_func

A custom equality check function

Returns

Whether self contains item. If it was found, position will be set to the position where item occurred for the first time.

position

the first position of item, if it was found.

Creates a new ListStore with items of type item_type. item_type must be a subclass of glib::Object.

item_type

the GType of items in the list

Returns

a new ListStore

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

This method returns an instance of ListStoreBuilder which can be used to create ListStore objects.

Appends item to self. item must be of type property::ListStore::item-type.

This function takes a ref on item.

Use splice() to append multiple items at the same time efficiently.

item

the new item

Available on crate feature v2_64 only.

Looks up the given item in the list store by looping over the items until the first occurrence of item. If item was not found, then position will not be set, and this method will return false.

If you need to compare the two items with a custom comparison function, use find_with_equal_func() with a custom GEqualFunc instead.

item

an item

Returns

Whether self contains item. If it was found, position will be set to the position where item occurred for the first time.

position

the first position of item, if it was found.

Inserts item into self at position. item must be of type property::ListStore::item-type or derived from it. position must be smaller than the length of the list, or equal to it to append.

This function takes a ref on item.

Use splice() to insert multiple items at the same time efficiently.

position

the position at which to insert the new item

item

the new item

Removes the item from self that is at position. position must be smaller than the current length of the list.

Use splice() to remove multiple items at the same time efficiently.

position

the position of the item that is to be removed

Removes all items from self.

Trait Implementations§

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🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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The type of the elements being iterated over.
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This method returns an Ordering between self and other. Read more
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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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more
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
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Auto Trait Implementations§

Blanket Implementations§

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