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JavaScript Binding - Cache objects on a per browser basis
Issue #2306
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| // Copyright © 2023 The CefSharp Authors. All rights reserved. | ||
| // | ||
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. | ||
|
|
||
| using System; | ||
| using System.Collections.Generic; | ||
| using CefSharp.Internals; | ||
|
|
||
| namespace CefSharp.RenderProcess | ||
| { | ||
| /// <summary> | ||
| /// JavaScriptObjectCache is used in the RenderProcess to cache | ||
| /// JavaScript bound objects at a CefBrowser level | ||
| /// </summary> | ||
| public class JavaScriptObjectCache | ||
| { | ||
| private readonly Dictionary<int, Dictionary<string, JavascriptObject>> cache | ||
| = new Dictionary<int, Dictionary<string, JavascriptObject>>(); | ||
|
|
||
| /// <summary> | ||
| /// Remove the Browser specific Cache | ||
| /// </summary> | ||
| /// <param name="browserId">browser Id</param> | ||
| public void ClearCache(int browserId) | ||
| { | ||
| cache.Remove(browserId); | ||
| } | ||
|
|
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| /// <summary> | ||
| /// Insert or Update the <paramref name="javascriptObject"/> within the Cache | ||
| /// </summary> | ||
| /// <param name="browserId">browser id</param> | ||
| /// <param name="javascriptObject">JavaScript object</param> | ||
| /// <exception cref="InvalidOperationException"></exception> | ||
| public void InsertOrUpdate(int browserId, IList<JavascriptObject> javascriptObjects) | ||
| { | ||
| var dict = GetCacheInternal(browserId); | ||
|
|
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| foreach (var obj in javascriptObjects) | ||
| { | ||
| if (dict.ContainsKey(obj.Name)) | ||
| { | ||
| dict.Remove(obj.Name); | ||
| } | ||
|
|
||
| dict.Add(obj.Name, obj); | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Gets a collection of <see cref="JavascriptObject"/>s | ||
| /// for the given <paramref name="browserId"/> | ||
| /// </summary> | ||
| /// <param name="browserId">browser Id</param> | ||
| /// <returns>Collection of current bound objects for the browser</returns> | ||
| /// <exception cref="InvalidOperationException"></exception> | ||
| public ICollection<JavascriptObject> GetCacheValues(int browserId) | ||
| { | ||
| if (cache.TryGetValue(browserId, out var dict)) | ||
| { | ||
| return dict.Values; | ||
| } | ||
|
|
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| return new List<JavascriptObject>(); | ||
| } | ||
|
|
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| /// <summary> | ||
| /// Gets the browser specific cache (dictionary) based on it's Id | ||
| /// </summary> | ||
| /// <param name="browserId">browser Id</param> | ||
| /// <returns>Dictionary of cache <see cref="JavascriptObject"/>'s.</returns> | ||
| /// <exception cref="InvalidOperationException"></exception> | ||
| public Dictionary<string, JavascriptObject> GetCache(int browserId) | ||
| { | ||
| var dict = GetCacheInternal(browserId); | ||
|
|
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| return dict; | ||
| } | ||
|
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| private Dictionary<string, JavascriptObject> GetCacheInternal(int browserId) | ||
| { | ||
| Dictionary<string, JavascriptObject> dict; | ||
|
|
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| if (!cache.TryGetValue(browserId, out dict)) | ||
| { | ||
| dict = new Dictionary<string, JavascriptObject>(); | ||
|
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| cache.Add(browserId, dict); | ||
| } | ||
|
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| return dict; | ||
| } | ||
| } | ||
| } |