cef/include/cef_frame.h
Marshall Greenblatt ebee84755e Convert legacy IPC messages to Mojo (fixes issue #3123)
This change introduces a few minor CEF API behavior changes:

- A CefProcessMessage object cannot be reused after being passed to
  SendProcessMessage.
- The |extra_info| argument to CefRenderProcessHandler::OnBrowserCreated may
  now be NULL.

Where appropriate, we now utilize the default UTF string encoding format and
shared memory to reduce copies and conversions for the cross-process
transfer of arbitrary-length strings. For example, CefFrame::GetSource/GetText
now involves zero UTF conversions and zero copies in the browser process for
the CefString delivered to CefStringVisitor::Visit().
2021-05-18 21:59:48 -04:00

262 lines
8.4 KiB
C++

// Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//
#ifndef CEF_INCLUDE_CEF_FRAME_H_
#define CEF_INCLUDE_CEF_FRAME_H_
#pragma once
#include "include/cef_base.h"
#include "include/cef_dom.h"
#include "include/cef_process_message.h"
#include "include/cef_request.h"
#include "include/cef_stream.h"
#include "include/cef_string_visitor.h"
class CefBrowser;
class CefURLRequest;
class CefURLRequestClient;
class CefV8Context;
///
// Class used to represent a frame in the browser window. When used in the
// browser process the methods of this class may be called on any thread unless
// otherwise indicated in the comments. When used in the render process the
// methods of this class may only be called on the main thread.
///
/*--cef(source=library)--*/
class CefFrame : public virtual CefBaseRefCounted {
public:
///
// True if this object is currently attached to a valid frame.
///
/*--cef()--*/
virtual bool IsValid() = 0;
///
// Execute undo in this frame.
///
/*--cef()--*/
virtual void Undo() = 0;
///
// Execute redo in this frame.
///
/*--cef()--*/
virtual void Redo() = 0;
///
// Execute cut in this frame.
///
/*--cef()--*/
virtual void Cut() = 0;
///
// Execute copy in this frame.
///
/*--cef()--*/
virtual void Copy() = 0;
///
// Execute paste in this frame.
///
/*--cef()--*/
virtual void Paste() = 0;
///
// Execute delete in this frame.
///
/*--cef(capi_name=del)--*/
virtual void Delete() = 0;
///
// Execute select all in this frame.
///
/*--cef()--*/
virtual void SelectAll() = 0;
///
// Save this frame's HTML source to a temporary file and open it in the
// default text viewing application. This method can only be called from the
// browser process.
///
/*--cef()--*/
virtual void ViewSource() = 0;
///
// Retrieve this frame's HTML source as a string sent to the specified
// visitor.
///
/*--cef()--*/
virtual void GetSource(CefRefPtr<CefStringVisitor> visitor) = 0;
///
// Retrieve this frame's display text as a string sent to the specified
// visitor.
///
/*--cef()--*/
virtual void GetText(CefRefPtr<CefStringVisitor> visitor) = 0;
///
// Load the request represented by the |request| object.
//
// WARNING: This method will fail with "bad IPC message" reason
// INVALID_INITIATOR_ORIGIN (213) unless you first navigate to the
// request origin using some other mechanism (LoadURL, link click, etc).
///
/*--cef()--*/
virtual void LoadRequest(CefRefPtr<CefRequest> request) = 0;
///
// Load the specified |url|.
///
/*--cef()--*/
virtual void LoadURL(const CefString& url) = 0;
///
// Execute a string of JavaScript code in this frame. The |script_url|
// parameter is the URL where the script in question can be found, if any.
// The renderer may request this URL to show the developer the source of the
// error. The |start_line| parameter is the base line number to use for error
// reporting.
///
/*--cef(optional_param=script_url)--*/
virtual void ExecuteJavaScript(const CefString& code,
const CefString& script_url,
int start_line) = 0;
///
// Returns true if this is the main (top-level) frame.
///
/*--cef()--*/
virtual bool IsMain() = 0;
///
// Returns true if this is the focused frame.
///
/*--cef()--*/
virtual bool IsFocused() = 0;
///
// Returns the name for this frame. If the frame has an assigned name (for
// example, set via the iframe "name" attribute) then that value will be
// returned. Otherwise a unique name will be constructed based on the frame
// parent hierarchy. The main (top-level) frame will always have an empty name
// value.
///
/*--cef()--*/
virtual CefString GetName() = 0;
///
// Returns the globally unique identifier for this frame or < 0 if the
// underlying frame does not yet exist.
///
/*--cef()--*/
virtual int64 GetIdentifier() = 0;
///
// Returns the parent of this frame or NULL if this is the main (top-level)
// frame.
///
/*--cef()--*/
virtual CefRefPtr<CefFrame> GetParent() = 0;
///
// Returns the URL currently loaded in this frame.
///
/*--cef()--*/
virtual CefString GetURL() = 0;
///
// Returns the browser that this frame belongs to.
///
/*--cef()--*/
virtual CefRefPtr<CefBrowser> GetBrowser() = 0;
///
// Get the V8 context associated with the frame. This method can only be
// called from the render process.
///
/*--cef()--*/
virtual CefRefPtr<CefV8Context> GetV8Context() = 0;
///
// Visit the DOM document. This method can only be called from the render
// process.
///
/*--cef()--*/
virtual void VisitDOM(CefRefPtr<CefDOMVisitor> visitor) = 0;
///
// Create a new URL request that will be treated as originating from this
// frame and the associated browser. This request may be intercepted by the
// client via CefResourceRequestHandler or CefSchemeHandlerFactory. Use
// CefURLRequest::Create instead if you do not want the request to have this
// association, in which case it may be handled differently (see documentation
// on that method). Requests may originate from both the browser process and
// the render process.
//
// For requests originating from the browser process:
// - POST data may only contain a single element of type PDE_TYPE_FILE or
// PDE_TYPE_BYTES.
// For requests originating from the render process:
// - POST data may only contain a single element of type PDE_TYPE_BYTES.
// - If the response contains Content-Disposition or Mime-Type header values
// that would not normally be rendered then the response may receive
// special handling inside the browser (for example, via the file download
// code path instead of the URL request code path).
//
// The |request| object will be marked as read-only after calling this method.
///
/*--cef()--*/
virtual CefRefPtr<CefURLRequest> CreateURLRequest(
CefRefPtr<CefRequest> request,
CefRefPtr<CefURLRequestClient> client) = 0;
///
// Send a message to the specified |target_process|. Ownership of the message
// contents will be transferred and the |message| reference will be
// invalidated. Message delivery is not guaranteed in all cases (for example,
// if the browser is closing, navigating, or if the target process crashes).
// Send an ACK message back from the target process if confirmation is
// required.
///
/*--cef()--*/
virtual void SendProcessMessage(CefProcessId target_process,
CefRefPtr<CefProcessMessage> message) = 0;
};
#endif // CEF_INCLUDE_CEF_FRAME_H_