realm-js/docs/list.js

91 lines
3.7 KiB
JavaScript

////////////////////////////////////////////////////////////////////////////
//
// Copyright 2016 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////
/**
* Instances of this class will be returned when accessing object properties whose type is `"list"`
* (see {@linkplain Realm~ObjectSchemaProperty ObjectSchemaProperty}).
*
* Lists mostly behave like normal Javascript Arrays, except for that they can
* only store values of a single type (indicated by the `type` and `optional`
* properties of the List), and can only be modified inside a {@linkplain
* Realm#write write} transaction.
*
* @extends Realm.Collection
* @class
* @name Realm.List
* @memberof Realm
*/
class List extends Collection {
/**
* Remove the **last** value from the list and return it.
* @throws {Error} If not inside a write transaction.
* @returns {T|undefined} if the list is empty.
*/
pop() {}
/**
* Add one or more values to the _end_ of the list.
*
* @param {...T} value - Values to add to the list.
* @throws {TypeError} If a `value` is not of a type which can be stored in
* the list, or if an object being added to the list does not match the
* {@linkcode Realm~ObjectSchema object schema} for the list.
*
* @throws {Error} If not inside a write transaction.
* @returns {number} equal to the new {@link Realm.List#length length} of
* the list after adding the values.
*/
push(...value) {}
/**
* Remove the **first** value from the list and return it.
* @throws {Error} If not inside a write transaction.
* @returns {T|undefined} if the list is empty.
*/
shift() {}
/**
* Changes the contents of the list by removing value and/or inserting new value.
*
* @see {@linkcode https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice Array.prototype.splice}
* @param {number} index - The start index. If greater than the length of the list,
* the start index will be set to the length instead. If negative, then the start index
* will be counted from the end of the list (e.g. `list.length - index`).
* @param {number} [count] - The number of values to remove from the list.
* If not provided, then all values from the start index through the end of
* the list will be removed.
* @param {...T} [value] - Values to insert into the list starting at `index`.
* @returns {T[]} containing the value that were removed from the list. The
* array is empty if no value were removed.
*/
splice(index, count, ...object) {}
/**
* Add one or more values to the _beginning_ of the list.
*
* @param {...T} value - Values to add to the list.
* @throws {TypeError} If a `value` is not of a type which can be stored in
* the list, or if an object being added to the list does not match the
* {@linkcode Realm~ObjectSchema object schema} for the list.
* @throws {Error} If not inside a write transaction.
* @returns {number} equal to the new {@link Realm.List#length length} of
* the list after adding the values.
*/
unshift(...object) {}
}