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https://bitbucket.org/chromiumembedded/cef
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200 lines
8.5 KiB
C++
200 lines
8.5 KiB
C++
// Copyright (c) 2017 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file must follow a specific format in order to
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// support the CEF translator tool. See the translator.README.txt file in the
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// tools directory for more information.
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//
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#ifndef CEF_INCLUDE_CEF_EXTENSION_HANDLER_H_
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#define CEF_INCLUDE_CEF_EXTENSION_HANDLER_H_
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#pragma once
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#include "include/cef_base.h"
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#include "include/cef_browser.h"
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#include "include/cef_extension.h"
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#include "include/cef_stream.h"
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class CefClient;
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///
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// Callback interface used for asynchronous continuation of
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// CefExtensionHandler::GetExtensionResource.
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///
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/*--cef(source=library)--*/
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class CefGetExtensionResourceCallback : public CefBaseRefCounted {
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public:
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///
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// Continue the request. Read the resource contents from |stream|.
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///
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/*--cef(capi_name=cont,optional_param=stream)--*/
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virtual void Continue(CefRefPtr<CefStreamReader> stream) = 0;
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///
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// Cancel the request.
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///
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/*--cef()--*/
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virtual void Cancel() = 0;
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};
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///
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// Implement this interface to handle events related to browser extensions.
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// The methods of this class will be called on the UI thread. See
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// CefRequestContext::LoadExtension for information about extension loading.
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///
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/*--cef(source=client)--*/
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class CefExtensionHandler : public virtual CefBaseRefCounted {
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public:
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///
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// Called if the CefRequestContext::LoadExtension request fails. |result| will
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// be the error code.
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///
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/*--cef()--*/
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virtual void OnExtensionLoadFailed(cef_errorcode_t result) {}
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///
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// Called if the CefRequestContext::LoadExtension request succeeds.
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// |extension| is the loaded extension.
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///
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/*--cef()--*/
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virtual void OnExtensionLoaded(CefRefPtr<CefExtension> extension) {}
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///
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// Called after the CefExtension::Unload request has completed.
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///
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/*--cef()--*/
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virtual void OnExtensionUnloaded(CefRefPtr<CefExtension> extension) {}
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///
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// Called when an extension needs a browser to host a background script
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// specified via the "background" manifest key. The browser will have no
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// visible window and cannot be displayed. |extension| is the extension that
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// is loading the background script. |url| is an internally generated
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// reference to an HTML page that will be used to load the background script
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// via a <script> src attribute. To allow creation of the browser optionally
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// modify |client| and |settings| and return false. To cancel creation of the
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// browser (and consequently cancel load of the background script) return
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// true. Successful creation will be indicated by a call to
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// CefLifeSpanHandler::OnAfterCreated, and CefBrowserHost::IsBackgroundHost
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// will return true for the resulting browser. See
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// https://developer.chrome.com/extensions/event_pages for more information
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// about extension background script usage.
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///
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/*--cef()--*/
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virtual bool OnBeforeBackgroundBrowser(CefRefPtr<CefExtension> extension,
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const CefString& url,
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CefRefPtr<CefClient>& client,
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CefBrowserSettings& settings) {
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return false;
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}
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///
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// Called when an extension API (e.g. chrome.tabs.create) requests creation of
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// a new browser. |extension| and |browser| are the source of the API call.
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// |active_browser| may optionally be specified via the windowId property or
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// returned via the GetActiveBrowser() callback and provides the default
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// |client| and |settings| values for the new browser. |index| is the position
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// value optionally specified via the index property. |url| is the URL that
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// will be loaded in the browser. |active| is true if the new browser should
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// be active when opened. To allow creation of the browser optionally modify
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// |windowInfo|, |client| and |settings| and return false. To cancel creation
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// of the browser return true. Successful creation will be indicated by a call
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// to CefLifeSpanHandler::OnAfterCreated. Any modifications to |windowInfo|
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// will be ignored if |active_browser| is wrapped in a CefBrowserView.
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///
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/*--cef()--*/
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virtual bool OnBeforeBrowser(CefRefPtr<CefExtension> extension,
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CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefBrowser> active_browser,
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int index,
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const CefString& url,
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bool active,
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CefWindowInfo& windowInfo,
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CefRefPtr<CefClient>& client,
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CefBrowserSettings& settings) {
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return false;
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}
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///
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// Called when no tabId is specified to an extension API call that accepts a
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// tabId parameter (e.g. chrome.tabs.*). |extension| and |browser| are the
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// source of the API call. Return the browser that will be acted on by the API
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// call or return NULL to act on |browser|. The returned browser must share
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// the same CefRequestContext as |browser|. Incognito browsers should not be
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// considered unless the source extension has incognito access enabled, in
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// which case |include_incognito| will be true.
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///
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/*--cef()--*/
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virtual CefRefPtr<CefBrowser> GetActiveBrowser(
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CefRefPtr<CefExtension> extension,
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CefRefPtr<CefBrowser> browser,
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bool include_incognito) {
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return NULL;
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}
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///
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// Called when the tabId associated with |target_browser| is specified to an
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// extension API call that accepts a tabId parameter (e.g. chrome.tabs.*).
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// |extension| and |browser| are the source of the API call. Return true
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// to allow access of false to deny access. Access to incognito browsers
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// should not be allowed unless the source extension has incognito access
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// enabled, in which case |include_incognito| will be true.
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///
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/*--cef()--*/
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virtual bool CanAccessBrowser(CefRefPtr<CefExtension> extension,
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CefRefPtr<CefBrowser> browser,
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bool include_incognito,
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CefRefPtr<CefBrowser> target_browser) {
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return true;
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}
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///
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// Called to retrieve an extension resource that would normally be loaded from
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// disk (e.g. if a file parameter is specified to chrome.tabs.executeScript).
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// |extension| and |browser| are the source of the resource request. |file| is
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// the requested relative file path. To handle the resource request return
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// true and execute |callback| either synchronously or asynchronously. For the
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// default behavior which reads the resource from the extension directory on
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// disk return false. Localization substitutions will not be applied to
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// resources handled via this method.
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///
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/*--cef()--*/
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virtual bool GetExtensionResource(
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CefRefPtr<CefExtension> extension,
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CefRefPtr<CefBrowser> browser,
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const CefString& file,
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CefRefPtr<CefGetExtensionResourceCallback> callback) {
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return false;
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}
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};
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#endif // CEF_INCLUDE_CEF_EXTENSION_HANDLER_H_
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