ExtensionHandler Class

Version 103.0.120

Implement this interface to handle events related to browser extensions. The methods of this class will be called on the CEF UI thread. See LoadExtension(String, String, IExtensionHandler) for information about extension loading.

Inheritance Hierarchy

SystemObject
CefSharp.HandlerExtensionHandler

Namespace: CefSharp.Handler
Assembly: CefSharp (in CefSharp.dll) Version: 103.0.120.0 (103.0.120.0)

Syntax

C++

Copy

public class ExtensionHandler : IExtensionHandler, 
	IDisposable

public ref class ExtensionHandler : IExtensionHandler, 
	IDisposable

The ExtensionHandler type exposes the following members.

Constructors

	Name	Description
	ExtensionHandler	Initializes a new instance of the ExtensionHandler class

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Properties

	Name	Description
	IsDisposed	IsDisposed

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Methods

	Name	Description
	CanAccessBrowser	Called when the tabId associated with targetBrowser is specified to an extension API call that accepts a tabId parameter (e.g. chrome.tabs.*).
	Dispose	Releases the unmanaged resources used by the ExtensionHandler and optionally releases the managed resources
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetActiveBrowser	Called when no tabId is specified to an extension API call that accepts a tabId parameter (e.g. chrome.tabs.*).
	GetExtensionResource	Called to retrieve an extension resource that would normally be loaded from disk (e.g. if a file parameter is specified to chrome.tabs.executeScript). Localization substitutions will not be applied to resources handled via this method.
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnBeforeBackgroundBrowser	Called when an extension needs a browser to host a background script specified via the "background" manifest key. The browser will have no visible window and cannot be displayed. To allow creation of the browser optionally modify newBrowser and settings and return false. To cancel creation of the browser (and consequently cancel load of the background script) return true. Successful creation will be indicated by a call to ILifeSpanHandler.OnAfterCreated, and IBrowserHost.IsBackgroundHost will return true for the resulting browser. See https://developer.chrome.com/extensions/event_pages for more information about extension background script usage.
	OnBeforeBrowser	Called when an extension API (e.g. chrome.tabs.create) requests creation of a new browser. Successful creation will be indicated by a call to OnAfterCreated(IWebBrowser, IBrowser).
	OnExtensionLoaded	Called if the LoadExtension(String, String, IExtensionHandler) request succeeds.
	OnExtensionLoadFailed	Called if the LoadExtension(String, String, IExtensionHandler) request fails.
	OnExtensionUnloaded	Called after the IExtension.Unload request has completed.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Reference

CefSharp.Handler Namespace