Index: tools/dom/templates/html/dartium/indexed_db_dartium.darttemplate |
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-// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
-// for details. All rights reserved. Use of this source code is governed by a |
-// BSD-style license that can be found in the LICENSE file. |
- |
-// DO NOT EDIT |
-// Auto-generated dart:indexed_db library. |
- |
-/** |
- * A client-side key-value store with support for indexes. |
- * |
- * Many browsers support IndexedDB—a web standard for |
- * an indexed database. |
- * By storing data on the client in an IndexedDB, |
- * a web app gets some advantages, such as faster performance and persistence. |
- * To find out which browsers support IndexedDB, |
- * refer to [Can I Use?](http://caniuse.com/#feat=indexeddb) |
- * |
- * In IndexedDB, each record is identified by a unique index or key, |
- * making data retrieval speedy. |
- * You can store structured data, |
- * such as images, arrays, and maps using IndexedDB. |
- * The standard does not specify size limits for individual data items |
- * or for the database itself, but browsers may impose storage limits. |
- * |
- * ## Using indexed_db |
- * |
- * The classes in this library provide an interface |
- * to the browser's IndexedDB, if it has one. |
- * To use this library in your code: |
- * |
- * import 'dart:indexed_db'; |
- * |
- * A web app can determine if the browser supports |
- * IndexedDB with [IdbFactory.supported]: |
- * |
- * if (IdbFactory.supported) |
- * // Use indexeddb. |
- * else |
- * // Find an alternative. |
- * |
- * Access to the browser's IndexedDB is provided by the app's top-level |
- * [Window] object, which your code can refer to with `window.indexedDB`. |
- * So, for example, |
- * here's how to use window.indexedDB to open a database: |
- * |
- * Future open() { |
- * return window.indexedDB.open('myIndexedDB', |
- * version: 1, |
- * onUpgradeNeeded: _initializeDatabase) |
- * .then(_loadFromDB); |
- * } |
- * void _initializeDatabase(VersionChangeEvent e) { |
- * ... |
- * } |
- * Future _loadFromDB(Database db) { |
- * ... |
- * } |
- * |
- * |
- * All data in an IndexedDB is stored within an [ObjectStore]. |
- * To manipulate the database use [Transaction]s. |
- * |
- * ## Other resources |
- * |
- * Other options for client-side data storage include: |
- * |
- * * [Window.localStorage]—a |
- * basic mechanism that stores data as a [Map], |
- * and where both the keys and the values are strings. |
- * |
- * * [dart:web_sql]—a database that can be queried with SQL. |
- * |
- * For a tutorial about using the indexed_db library with Dart, |
- * check out |
- * [Use IndexedDB](http://www.dartlang.org/docs/tutorials/indexeddb/). |
- * |
- * [IndexedDB reference](http://docs.webplatform.org/wiki/apis/indexeddb) |
- * provides wiki-style docs about indexedDB |
- */ |
-library dart.dom.indexed_db; |
- |
-import 'dart:async'; |
-import 'dart:html'; |
-import 'dart:html_common'; |
-import 'dart:nativewrappers'; |
-import 'dart:_blink' as _blink; |
-import 'dart:js' as js; |
- |
-$!GENERATED_DART_FILES |
- |
-class _KeyRangeFactoryProvider { |
- |
- static KeyRange createKeyRange_only(/*IDBKey*/ value) => |
- KeyRange.only_(value); |
- |
- static KeyRange createKeyRange_lowerBound( |
- /*IDBKey*/ bound, [bool open = false]) => |
- KeyRange.lowerBound_(bound, open); |
- |
- static KeyRange createKeyRange_upperBound( |
- /*IDBKey*/ bound, [bool open = false]) => |
- KeyRange.upperBound_(bound, open); |
- |
- static KeyRange createKeyRange_bound( |
- /*IDBKey*/ lower, /*IDBKey*/ upper, |
- [bool lowerOpen = false, bool upperOpen = false]) => |
- KeyRange.bound_(lower, upper, lowerOpen, upperOpen); |
-} |
-// FIXME: Can we make this private? |
-@Deprecated("Internal Use Only") |
-final indexed_dbBlinkMap = { |
-$!TYPE_MAP |
-}; |
- |
- |
-// |
-// Per http://www.w3.org/TR/IndexedDB/#key-construct |
-// |
-// "A value is said to be a valid key if it is one of the following types: Array |
-// JavaScript objects [ECMA-262], DOMString [WEBIDL], Date [ECMA-262] or float |
-// [WEBIDL]. However Arrays are only valid keys if every item in the array is |
-// defined and is a valid key (i.e. sparse arrays can not be valid keys) and if |
-// the Array doesn't directly or indirectly contain itself. Any non-numeric |
-// properties are ignored, and thus does not affect whether the Array is a valid |
-// key. Additionally, if the value is of type float, it is only a valid key if |
-// it is not NaN, and if the value is of type Date it is only a valid key if its |
-// [[PrimitiveValue]] internal property, as defined by [ECMA-262], is not NaN." |
- |
-// What is required is to ensure that an Lists in the key are actually |
-// JavaScript arrays, and any Dates are JavaScript Dates. |
- |
- |
-/** |
- * Converts a native IDBKey into a Dart object. |
- * |
- * May return the original input. May mutate the original input (but will be |
- * idempotent if mutation occurs). It is assumed that this conversion happens |
- * on native IDBKeys on all paths that return IDBKeys from native DOM calls. |
- * |
- * If necessary, JavaScript Dates are converted into Dart Dates. |
- */ |
-_convertNativeToDart_IDBKey(nativeKey) { |
- containsDate(object) { |
- if (object is DateTime) return true; |
- if (object is List) { |
- for (int i = 0; i < object.length; i++) { |
- if (containsDate(object[i])) return true; |
- } |
- } |
- return false; // number, string. |
- } |
- if (nativeKey is DateTime) { |
- throw new UnimplementedError('Key containing DateTime'); |
- } |
- // TODO: Cache conversion somewhere? |
- return nativeKey; |
-} |
- |
-/** |
- * Converts a Dart object into a valid IDBKey. |
- * |
- * May return the original input. Does not mutate input. |
- * |
- * If necessary, [dartKey] may be copied to ensure all lists are converted into |
- * JavaScript Arrays and Dart Dates into JavaScript Dates. |
- */ |
-_convertDartToNative_IDBKey(dartKey) { |
- // TODO: Implement. |
- return dartKey; |
-} |
- |
- |
- |
-/// May modify original. If so, action is idempotent. |
-_convertNativeToDart_IDBAny(object) { |
- return convertNativeToDart_AcceptStructuredClone(object, mustCopy: false); |
-} |