cef/include/cef_capi.h

// Copyright (c) 2011 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.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//

#ifndef _CEF_CAPI_H
#define _CEF_CAPI_H

#ifdef __cplusplus
extern "C" {
#endif

#include "internal/cef_export.h"
#include "internal/cef_string.h"
#include "internal/cef_string_list.h"
#include "internal/cef_string_map.h"
#include "internal/cef_types.h"


///
// This function should be called on the main application thread to initialize
// CEF when the application is started.  A return value of true (1) indicates
// that it succeeded and false (0) indicates that it failed.
///
CEF_EXPORT int cef_initialize(const struct _cef_settings_t* settings);

///
// This function should be called on the main application thread to shut down
// CEF before the application exits.
///
CEF_EXPORT void cef_shutdown();

///
// Perform a single iteration of CEF message loop processing. This function is
// used to integrate the CEF message loop into an existing application message
// loop. Care must be taken to balance performance against excessive CPU usage.
// This function should only be called on the main application thread and only
// if cef_initialize() is called with a CefSettings.multi_threaded_message_loop
// value of false (0). This function will not block.
///
CEF_EXPORT void cef_do_message_loop_work();

///
// Run the CEF message loop. Use this function instead of an application-
// provided message loop to get the best balance between performance and CPU
// usage. This function should only be called on the main application thread and
// only if cef_initialize() is called with a
// CefSettings.multi_threaded_message_loop value of false (0). This function
// will block until a quit message is received by the system.
///
CEF_EXPORT void cef_run_message_loop();

///
// Register a new V8 extension with the specified JavaScript extension code and
// handler. Functions implemented by the handler are prototyped using the
// keyword 'native'. The calling of a native function is restricted to the scope
// in which the prototype of the native function is defined. This function may
// be called on any thread.
//
// Example JavaScript extension code: <pre>
//   // create the 'example' global object if it doesn't already exist.
//   if (!example)
//     example = {};
//   // create the 'example.test' global object if it doesn't already exist.
//   if (!example.test)
//     example.test = {};
//   (function() {
//     // Define the function 'example.test.myfunction'.
//     example.test.myfunction = function() {
//       // Call CefV8Handler::Execute() with the function name 'MyFunction'
//       // and no arguments.
//       native function MyFunction();
//       return MyFunction();
//     };
//     // Define the getter function for parameter 'example.test.myparam'.
//     example.test.__defineGetter__('myparam', function() {
//       // Call CefV8Handler::Execute() with the function name 'GetMyParam'
//       // and no arguments.
//       native function GetMyParam();
//       return GetMyParam();
//     });
//     // Define the setter function for parameter 'example.test.myparam'.
//     example.test.__defineSetter__('myparam', function(b) {
//       // Call CefV8Handler::Execute() with the function name 'SetMyParam'
//       // and a single argument.
//       native function SetMyParam();
//       if(b) SetMyParam(b);
//     });
//
//     // Extension definitions can also contain normal JavaScript variables
//     // and functions.
//     var myint = 0;
//     example.test.increment = function() {
//       myint += 1;
//       return myint;
//     };
//   })();
// </pre> Example usage in the page: <pre>
//   // Call the function.
//   example.test.myfunction();
//   // Set the parameter.
//   example.test.myparam = value;
//   // Get the parameter.
//   value = example.test.myparam;
//   // Call another function.
//   example.test.increment();
// </pre>
///
CEF_EXPORT int cef_register_extension(const cef_string_t* extension_name,
    const cef_string_t* javascript_code, struct _cef_v8handler_t* handler);

///
// Register a custom scheme. This function should not be called for the built-in
// HTTP, HTTPS, FILE, FTP, ABOUT and DATA schemes.
//
// If |is_standard| is true (1) the scheme will be treated as a standard scheme.
// Standard schemes are subject to URL canonicalization and parsing rules as
// defined in the Common Internet Scheme Syntax RFC 1738 Section 3.1 available
// at http://www.ietf.org/rfc/rfc1738.txt
//
// In particular, the syntax for standard scheme URLs must be of the form: <pre>
//  [scheme]://[username]:[password]@[host]:[port]/[url-path]
// </pre> Standard scheme URLs must have a host component that is a fully
// qualified domain name as defined in Section 3.5 of RFC 1034 [13] and Section
// 2.1 of RFC 1123. These URLs will be canonicalized to "scheme://host/path" in
// the simplest case and "scheme://username:password@host:port/path" in the most
// explicit case. For example, "scheme:host/path" and "scheme:///host/path" will
// both be canonicalized to "scheme://host/path".
//
// For non-standard scheme URLs only the "scheme:" component is parsed and
// canonicalized. The remainder of the URL will be passed to the handler as-is.
// For example, "scheme:///some%20text" will remain the same. Non-standard
// scheme URLs cannot be used as a target for form submission.
//
// If |is_local| is true (1) the scheme will be treated as local (i.e., with the
// same security rules as those applied to "file" URLs). This means that normal
// pages cannot link to or access URLs of this scheme.
//
// If |is_display_isolated| is true (1) the scheme will be treated as display-
// isolated. This means that pages cannot display these URLs unless they are
// from the same scheme. For example, pages in another origin cannot create
// iframes or hyperlinks to URLs with this scheme.
//
// This function may be called on any thread. It should only be called once per
// unique |scheme_name| value. If |scheme_name| is already registered or if an
// error occurs this function will return false (0).
///
CEF_EXPORT int cef_register_custom_scheme(const cef_string_t* scheme_name,
    int is_standard, int is_local, int is_display_isolated);

///
// Register a scheme handler factory for the specified |scheme_name| and
// optional |domain_name|. An NULL |domain_name| value for a standard scheme
// will cause the factory to match all domain names. The |domain_name| value
// will be ignored for non-standard schemes. If |scheme_name| is a built-in
// scheme and no handler is returned by |factory| then the built-in scheme
// handler factory will be called. If |scheme_name| is a custom scheme the
// cef_register_custom_scheme() function should be called for that scheme. This
// function may be called multiple times to change or remove the factory that
// matches the specified |scheme_name| and optional |domain_name|. Returns false
// (0) if an error occurs. This function may be called on any thread.
///
CEF_EXPORT int cef_register_scheme_handler_factory(
    const cef_string_t* scheme_name, const cef_string_t* domain_name,
    struct _cef_scheme_handler_factory_t* factory);

///
// Clear all registered scheme handler factories. Returns false (0) on error.
// This function may be called on any thread.
///
CEF_EXPORT int cef_clear_scheme_handler_factories();

///
// Add an entry to the cross-origin access whitelist.
//
// The same-origin policy restricts how scripts hosted from different origins
// (scheme + domain) can communicate. By default, scripts can only access
// resources with the same origin. Scripts hosted on the HTTP and HTTPS schemes
// (but no other schemes) can use the "Access-Control-Allow-Origin" header to
// allow cross-origin requests. For example, https://source.example.com can make
// XMLHttpRequest requests on http://target.example.com if the
// http://target.example.com request returns an "Access-Control-Allow-Origin:
// https://source.example.com" response header.
//
// Scripts in separate frames or iframes and hosted from the same protocol and
// domain suffix can execute cross-origin JavaScript if both pages set the
// document.domain value to the same domain suffix. For example,
// scheme://foo.example.com and scheme://bar.example.com can communicate using
// JavaScript if both domains set document.domain="example.com".
//
// This function is used to allow access to origins that would otherwise violate
// the same-origin policy. Scripts hosted underneath the fully qualified
// |source_origin| URL (like http://www.example.com) will be allowed access to
// all resources hosted on the specified |target_protocol| and |target_domain|.
// If |allow_target_subdomains| is true (1) access will also be allowed to all
// subdomains of the target domain. This function may be called on any thread.
// Returns false (0) if |source_origin| is invalid or the whitelist cannot be
// accessed.
///
CEF_EXPORT int cef_add_cross_origin_whitelist_entry(
    const cef_string_t* source_origin, const cef_string_t* target_protocol,
    const cef_string_t* target_domain, int allow_target_subdomains);

///
// Remove an entry from the cross-origin access whitelist. Returns false (0) if
// |source_origin| is invalid or the whitelist cannot be accessed.
///
CEF_EXPORT int cef_remove_cross_origin_whitelist_entry(
    const cef_string_t* source_origin, const cef_string_t* target_protocol,
    const cef_string_t* target_domain, int allow_target_subdomains);

///
// Remove all entries from the cross-origin access whitelist. Returns false (0)
// if the whitelist cannot be accessed.
///
CEF_EXPORT int cef_clear_cross_origin_whitelist();

///
// CEF maintains multiple internal threads that are used for handling different
// types of tasks. The UI thread creates the browser window and is used for all
// interaction with the WebKit rendering engine and V8 JavaScript engine (The UI
// thread will be the same as the main application thread if cef_initialize() is
// called with a CefSettings.multi_threaded_message_loop value of false (0).)
// The IO thread is used for handling schema and network requests. The FILE
// thread is used for the application cache and other miscellaneous activities.
// This function will return true (1) if called on the specified thread.
///
CEF_EXPORT int cef_currently_on(cef_thread_id_t threadId);

///
// Post a task for execution on the specified thread. This function may be
// called on any thread.
///
CEF_EXPORT int cef_post_task(cef_thread_id_t threadId,
    struct _cef_task_t* task);

///
// Post a task for delayed execution on the specified thread. This function may
// be called on any thread.
///
CEF_EXPORT int cef_post_delayed_task(cef_thread_id_t threadId,
    struct _cef_task_t* task, long delay_ms);

///
// Parse the specified |url| into its component parts. Returns false (0) if the
// URL is NULL or invalid.
///
CEF_EXPORT int cef_parse_url(const cef_string_t* url,
    struct _cef_urlparts_t* parts);

///
// Creates a URL from the specified |parts|, which must contain a non-NULL spec
// or a non-NULL host and path (at a minimum), but not both. Returns false (0)
// if |parts| isn't initialized as described.
///
CEF_EXPORT int cef_create_url(const struct _cef_urlparts_t* parts,
    cef_string_t* url);

///
// Visit all cookies. The returned cookies are ordered by longest path, then by
// earliest creation date. Returns false (0) if cookies cannot be accessed.
///
CEF_EXPORT int cef_visit_all_cookies(struct _cef_cookie_visitor_t* visitor);

///
// Visit a subset of cookies. The results are filtered by the given url scheme,
// host, domain and path. If |includeHttpOnly| is true (1) HTTP-only cookies
// will also be included in the results. The returned cookies are ordered by
// longest path, then by earliest creation date. Returns false (0) if cookies
// cannot be accessed.
///
CEF_EXPORT int cef_visit_url_cookies(const cef_string_t* url,
    int includeHttpOnly, struct _cef_cookie_visitor_t* visitor);

///
// Sets a cookie given a valid URL and explicit user-provided cookie attributes.
// This function expects each attribute to be well-formed. It will check for
// disallowed characters (e.g. the ';' character is disallowed within the cookie
// value attribute) and will return false (0) without setting the cookie if such
// characters are found. This function must be called on the IO thread.
///
CEF_EXPORT int cef_set_cookie(const cef_string_t* url,
    const struct _cef_cookie_t* cookie);

///
// Delete all cookies that match the specified parameters. If both |url| and
// |cookie_name| are specified all host and domain cookies matching both values
// will be deleted. If only |url| is specified all host cookies (but not domain
// cookies) irrespective of path will be deleted. If |url| is NULL all cookies
// for all hosts and domains will be deleted. Returns false (0) if a non-NULL
// invalid URL is specified or if cookies cannot be accessed. This function must
// be called on the IO thread.
///
CEF_EXPORT int cef_delete_cookies(const cef_string_t* url,
    const cef_string_t* cookie_name);

typedef struct _cef_base_t
{
  // Size of the data structure.
  size_t size;

  // Increment the reference count.
  int (CEF_CALLBACK *add_ref)(struct _cef_base_t* self);
  // Decrement the reference count.  Delete this object when no references
  // remain.
  int (CEF_CALLBACK *release)(struct _cef_base_t* self);
  // Returns the current number of references.
  int (CEF_CALLBACK *get_refct)(struct _cef_base_t* self);

} cef_base_t;


// Check that the structure |s|, which is defined with a cef_base_t member named
// |base|, is large enough to contain the specified member |f|.
#define CEF_MEMBER_EXISTS(s, f)   \
  ((int)&((s)->f) - (int)(s) + sizeof((s)->f) <= (s)->base.size)

#define CEF_MEMBER_MISSING(s, f)  (!CEF_MEMBER_EXISTS(s, f) || !((s)->f))


///
// Implement this structure for task execution. The functions of this structure
// may be called on any thread.
///
typedef struct _cef_task_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Method that will be executed. |threadId| is the thread executing the call.
  ///
  void (CEF_CALLBACK *execute)(struct _cef_task_t* self,
      cef_thread_id_t threadId);

} cef_task_t;


///
// Structure to implement for visiting cookie values. The functions of this
// structure will always be called on the IO thread.
///
typedef struct _cef_cookie_visitor_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Method that will be called once for each cookie. |count| is the 0-based
  // index for the current cookie. |total| is the total number of cookies. Set
  // |deleteCookie| to true (1) to delete the cookie currently being visited.
  // Return false (0) to stop visiting cookies. This function may never be
  // called if no cookies are found.
  ///
  int (CEF_CALLBACK *visit)(struct _cef_cookie_visitor_t* self,
      const struct _cef_cookie_t* cookie, int count, int total,
      int* deleteCookie);

} cef_cookie_visitor_t;


///
// Structure used to represent a browser window. The functions of this structure
// may be called on any thread unless otherwise indicated in the comments.
///
typedef struct _cef_browser_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Closes this browser window.
  ///
  void (CEF_CALLBACK *close_browser)(struct _cef_browser_t* self);

  ///
  // Returns true (1) if the browser can navigate backwards.
  ///
  int (CEF_CALLBACK *can_go_back)(struct _cef_browser_t* self);

  ///
  // Navigate backwards.
  ///
  void (CEF_CALLBACK *go_back)(struct _cef_browser_t* self);

  ///
  // Returns true (1) if the browser can navigate forwards.
  ///
  int (CEF_CALLBACK *can_go_forward)(struct _cef_browser_t* self);

  ///
  // Navigate backwards.
  ///
  void (CEF_CALLBACK *go_forward)(struct _cef_browser_t* self);

  ///
  // Reload the current page.
  ///
  void (CEF_CALLBACK *reload)(struct _cef_browser_t* self);

  ///
  // Reload the current page ignoring any cached data.
  ///
  void (CEF_CALLBACK *reload_ignore_cache)(struct _cef_browser_t* self);

  ///
  // Stop loading the page.
  ///
  void (CEF_CALLBACK *stop_load)(struct _cef_browser_t* self);

  ///
  // Set focus for the browser window. If |enable| is true (1) focus will be set
  // to the window. Otherwise, focus will be removed.
  ///
  void (CEF_CALLBACK *set_focus)(struct _cef_browser_t* self, int enable);

  ///
  // Retrieve the window handle for this browser.
  ///
  cef_window_handle_t (CEF_CALLBACK *get_window_handle)(
      struct _cef_browser_t* self);

  ///
  // Retrieve the window handle of the browser that opened this browser. Will
  // return NULL for non-popup windows. This function can be used in combination
  // with custom handling of modal windows.
  ///
  cef_window_handle_t (CEF_CALLBACK *get_opener_window_handle)(
      struct _cef_browser_t* self);

  ///
  // Returns true (1) if the window is a popup window.
  ///
  int (CEF_CALLBACK *is_popup)(struct _cef_browser_t* self);

  ///
  // Returns the client for this browser.
  ///
  struct _cef_client_t* (CEF_CALLBACK *get_client)(struct _cef_browser_t* self);

  ///
  // Returns the main (top-level) frame for the browser window.
  ///
  struct _cef_frame_t* (CEF_CALLBACK *get_main_frame)(
      struct _cef_browser_t* self);

  ///
  // Returns the focused frame for the browser window. This function should only
  // be called on the UI thread.
  ///
  struct _cef_frame_t* (CEF_CALLBACK *get_focused_frame)(
      struct _cef_browser_t* self);

  ///
  // Returns the frame with the specified name, or NULL if not found. This
  // function should only be called on the UI thread.
  ///
  struct _cef_frame_t* (CEF_CALLBACK *get_frame)(struct _cef_browser_t* self,
      const cef_string_t* name);

  ///
  // Returns the names of all existing frames. This function should only be
  // called on the UI thread.
  ///
  void (CEF_CALLBACK *get_frame_names)(struct _cef_browser_t* self,
      cef_string_list_t names);

  ///
  // Search for |searchText|. |identifier| can be used to have multiple searches
  // running simultaniously. |forward| indicates whether to search forward or
  // backward within the page. |matchCase| indicates whether the search should
  // be case-sensitive. |findNext| indicates whether this is the first request
  // or a follow-up.
  ///
  void (CEF_CALLBACK *find)(struct _cef_browser_t* self, int identifier,
      const cef_string_t* searchText, int forward, int matchCase,
      int findNext);

  ///
  // Cancel all searches that are currently going on.
  ///
  void (CEF_CALLBACK *stop_finding)(struct _cef_browser_t* self,
      int clearSelection);

  ///
  // Get the zoom level.
  ///
  double (CEF_CALLBACK *get_zoom_level)(struct _cef_browser_t* self);

  ///
  // Change the zoom level to the specified value.
  ///
  void (CEF_CALLBACK *set_zoom_level)(struct _cef_browser_t* self,
      double zoomLevel);

  ///
  // Open developer tools in its own window.
  ///
  void (CEF_CALLBACK *show_dev_tools)(struct _cef_browser_t* self);

  ///
  // Explicitly close the developer tools window if one exists for this browser
  // instance.
  ///
  void (CEF_CALLBACK *close_dev_tools)(struct _cef_browser_t* self);

  ///
  // Returns true (1) if window rendering is disabled.
  ///
  int (CEF_CALLBACK *is_window_rendering_disabled)(struct _cef_browser_t* self);

  ///
  // Get the size of the specified element. This function should only be called
  // on the UI thread.
  ///
  int (CEF_CALLBACK *get_size)(struct _cef_browser_t* self,
      enum cef_paint_element_type_t type, int* width, int* height);

  ///
  // Set the size of the specified element. This function is only used when
  // window rendering is disabled.
  ///
  void (CEF_CALLBACK *set_size)(struct _cef_browser_t* self,
      enum cef_paint_element_type_t type, int width, int height);

  ///
  // Returns true (1) if a popup is currently visible. This function should only
  // be called on the UI thread.
  ///
  int (CEF_CALLBACK *is_popup_visible)(struct _cef_browser_t* self);

  ///
  // Hide the currently visible popup, if any.
  ///
  void (CEF_CALLBACK *hide_popup)(struct _cef_browser_t* self);

  ///
  // Invalidate the |dirtyRect| region of the view. This function is only used
  // when window rendering is disabled and will result in a call to
  // HandlePaint().
  ///
  void (CEF_CALLBACK *invalidate)(struct _cef_browser_t* self,
      const cef_rect_t* dirtyRect);

  ///
  // Get the raw image data contained in the specified element without
  // performing validation. The specified |width| and |height| dimensions must
  // match the current element size. On Windows |buffer| must be width*height*4
  // bytes in size and represents a BGRA image with an upper-left origin. This
  // function should only be called on the UI thread.
  ///
  int (CEF_CALLBACK *get_image)(struct _cef_browser_t* self,
      enum cef_paint_element_type_t type, int width, int height,
      void* buffer);

  ///
  // Send a key event to the browser.
  ///
  void (CEF_CALLBACK *send_key_event)(struct _cef_browser_t* self,
      enum cef_key_type_t type, int key, int modifiers, int sysChar,
      int imeChar);

  ///
  // Send a mouse click event to the browser. The |x| and |y| coordinates are
  // relative to the upper-left corner of the view.
  ///
  void (CEF_CALLBACK *send_mouse_click_event)(struct _cef_browser_t* self,
      int x, int y, enum cef_mouse_button_type_t type, int mouseUp,
      int clickCount);

  ///
  // Send a mouse move event to the browser. The |x| and |y| coordinates are
  // relative to the upper-left corner of the view.
  ///
  void (CEF_CALLBACK *send_mouse_move_event)(struct _cef_browser_t* self, int x,
      int y, int mouseLeave);

  ///
  // Send a mouse wheel event to the browser. The |x| and |y| coordinates are
  // relative to the upper-left corner of the view.
  ///
  void (CEF_CALLBACK *send_mouse_wheel_event)(struct _cef_browser_t* self,
      int x, int y, int delta);

  ///
  // Send a focus event to the browser.
  ///
  void (CEF_CALLBACK *send_focus_event)(struct _cef_browser_t* self,
      int setFocus);

  ///
  // Send a capture lost event to the browser.
  ///
  void (CEF_CALLBACK *send_capture_lost_event)(struct _cef_browser_t* self);

} cef_browser_t;


///
// Create a new browser window using the window parameters specified by
// |windowInfo|. All values will be copied internally and the actual window will
// be created on the UI thread. This function call will not block.
///
CEF_EXPORT int cef_browser_create(cef_window_info_t* windowInfo,
    struct _cef_client_t* client, const cef_string_t* url,
    const struct _cef_browser_settings_t* settings);

///
// Create a new browser window using the window parameters specified by
// |windowInfo|. This function should only be called on the UI thread.
///
CEF_EXPORT cef_browser_t* cef_browser_create_sync(cef_window_info_t* windowInfo,
    struct _cef_client_t* client, const cef_string_t* url,
    const struct _cef_browser_settings_t* settings);


///
// Structure used to represent a frame in the browser window. The functions of
// this structure may be called on any thread unless otherwise indicated in the
// comments.
///
typedef struct _cef_frame_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Execute undo in this frame.
  ///
  void (CEF_CALLBACK *undo)(struct _cef_frame_t* self);

  ///
  // Execute redo in this frame.
  ///
  void (CEF_CALLBACK *redo)(struct _cef_frame_t* self);

  ///
  // Execute cut in this frame.
  ///
  void (CEF_CALLBACK *cut)(struct _cef_frame_t* self);

  ///
  // Execute copy in this frame.
  ///
  void (CEF_CALLBACK *copy)(struct _cef_frame_t* self);

  ///
  // Execute paste in this frame.
  ///
  void (CEF_CALLBACK *paste)(struct _cef_frame_t* self);

  ///
  // Execute delete in this frame.
  ///
  void (CEF_CALLBACK *del)(struct _cef_frame_t* self);

  ///
  // Execute select all in this frame.
  ///
  void (CEF_CALLBACK *select_all)(struct _cef_frame_t* self);

  ///
  // Execute printing in the this frame.  The user will be prompted with the
  // print dialog appropriate to the operating system.
  ///
  void (CEF_CALLBACK *print)(struct _cef_frame_t* self);

  ///
  // Save this frame's HTML source to a temporary file and open it in the
  // default text viewing application.
  ///
  void (CEF_CALLBACK *view_source)(struct _cef_frame_t* self);

  ///
  // Returns this frame's HTML source as a string. This function should only be
  // called on the UI thread.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_source)(struct _cef_frame_t* self);

  ///
  // Returns this frame's display text as a string. This function should only be
  // called on the UI thread.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_text)(struct _cef_frame_t* self);

  ///
  // Load the request represented by the |request| object.
  ///
  void (CEF_CALLBACK *load_request)(struct _cef_frame_t* self,
      struct _cef_request_t* request);

  ///
  // Load the specified |url|.
  ///
  void (CEF_CALLBACK *load_url)(struct _cef_frame_t* self,
      const cef_string_t* url);

  ///
  // Load the contents of |string| with the optional dummy target |url|.
  ///
  void (CEF_CALLBACK *load_string)(struct _cef_frame_t* self,
      const cef_string_t* string, const cef_string_t* url);

  ///
  // Load the contents of |stream| with the optional dummy target |url|.
  ///
  void (CEF_CALLBACK *load_stream)(struct _cef_frame_t* self,
      struct _cef_stream_reader_t* stream, const cef_string_t* url);

  ///
  // 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.
  ///
  void (CEF_CALLBACK *execute_java_script)(struct _cef_frame_t* self,
      const cef_string_t* jsCode, const cef_string_t* scriptUrl,
      int startLine);

  ///
  // Returns true (1) if this is the main frame.
  ///
  int (CEF_CALLBACK *is_main)(struct _cef_frame_t* self);

  ///
  // Returns true (1) if this is the focused frame. This function should only be
  // called on the UI thread.
  ///
  int (CEF_CALLBACK *is_focused)(struct _cef_frame_t* self);

  ///
  // Returns this frame's name.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_name)(struct _cef_frame_t* self);

  ///
  // Returns the URL currently loaded in this frame. This function should only
  // be called on the UI thread.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_url)(struct _cef_frame_t* self);

  ///
  // Returns the browser that this frame belongs to.
  ///
  struct _cef_browser_t* (CEF_CALLBACK *get_browser)(struct _cef_frame_t* self);

  ///
  // Visit the DOM document.
  ///
  void (CEF_CALLBACK *visit_dom)(struct _cef_frame_t* self,
      struct _cef_domvisitor_t* visitor);

} cef_frame_t;


///
// Implement this structure to handle events related to browser life span. The
// functions of this structure will be called on the UI thread.
///
typedef struct _cef_life_span_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called before a new popup window is created. The |parentBrowser| parameter
  // will point to the parent browser window. The |popupFeatures| parameter will
  // contain information about the style of popup window requested. Return false
  // (0) to have the framework create the new popup window based on the
  // parameters in |windowInfo|. Return true (1) to cancel creation of the popup
  // window. By default, a newly created popup window will have the same client
  // and settings as the parent window. To change the client for the new window
  // modify the object that |client| points to. To change the settings for the
  // new window modify the |settings| structure.
  ///
  int (CEF_CALLBACK *on_before_popup)(struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* parentBrowser,
      const struct _cef_popup_features_t* popupFeatures,
      struct _cef_window_info_t* windowInfo, const cef_string_t* url,
      struct _cef_client_t** client,
      struct _cef_browser_settings_t* settings);

  ///
  // Called after a new window is created.
  ///
  void (CEF_CALLBACK *on_after_created)(struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser);

  ///
  // Called just before a window is closed. If this is a modal window and you
  // handled the run_modal() event you can use this callback to restore the
  // opener window to a usable state.
  ///
  void (CEF_CALLBACK *on_before_close)(struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser);

  ///
  // Called to enter the modal loop. Provide your own modal loop here. Return
  // true (1) if you ran your own modal loop and false (0) to use the default.
  // You can also use this event to know when a modal window is about to start.
  ///
  int (CEF_CALLBACK *run_modal)(struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser);

  ///
  // Called when a modal browser window has been destroyed. You must implement
  // this if you are handling run_modal(). You can also use this event to know
  // when a modal window is about to be closed.
  ///
  void (CEF_CALLBACK *quit_modal)(struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser);

} cef_life_span_handler_t;


///
// Implement this structure to handle events related to browser load status. The
// functions of this structure will be called on the UI thread.
///
typedef struct _cef_load_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called when the browser begins loading a frame. The |frame| value will
  // never be NULL -- call the is_main() function to check if this frame is the
  // main frame. Multiple frames may be loading at the same time. Sub-frames may
  // start or continue loading after the main frame load has ended. This
  // function may not be called for a particular frame if the load request for
  // that frame fails.
  ///
  void (CEF_CALLBACK *on_load_start)(struct _cef_load_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame);

  ///
  // Called when the browser is done loading a frame. The |frame| value will
  // never be NULL -- call the is_main() function to check if this frame is the
  // main frame. Multiple frames may be loading at the same time. Sub-frames may
  // start or continue loading after the main frame load has ended. This
  // function will always be called for all frames irrespective of whether the
  // request completes successfully.
  ///
  void (CEF_CALLBACK *on_load_end)(struct _cef_load_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      int httpStatusCode);

  ///
  // Called when the browser fails to load a resource. |errorCode| is the error
  // code number and |failedUrl| is the URL that failed to load. To provide
  // custom error text assign the text to |errorText| and return true (1).
  // Otherwise, return false (0) for the default error text. See
  // net\base\net_error_list.h for complete descriptions of the error codes.
  ///
  int (CEF_CALLBACK *on_load_error)(struct _cef_load_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      enum cef_handler_errorcode_t errorCode, const cef_string_t* failedUrl,
      cef_string_t* errorText);

} cef_load_handler_t;


///
// Implement this structure to handle events related to browser requests. The
// functions of this structure will be called on the thread indicated.
///
typedef struct _cef_request_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called on the UI thread before browser navigation. Return true (1) to
  // cancel the navigation or false (0) to allow the navigation to proceed.
  ///
  int (CEF_CALLBACK *on_before_browse)(struct _cef_request_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      struct _cef_request_t* request, enum cef_handler_navtype_t navType,
      int isRedirect);

  ///
  // Called on the IO thread before a resource is loaded.  To allow the resource
  // to load normally return false (0). To redirect the resource to a new url
  // populate the |redirectUrl| value and return false (0).  To specify data for
  // the resource return a CefStream object in |resourceStream|, use the
  // |response| object to set mime type, HTTP status code and optional header
  // values, and return false (0). To cancel loading of the resource return true
  // (1). Any modifications to |request| will be observed.  If the URL in
  // |request| is changed and |redirectUrl| is also set, the URL in |request|
  // will be used.
  ///
  int (CEF_CALLBACK *on_before_resource_load)(
      struct _cef_request_handler_t* self, struct _cef_browser_t* browser,
      struct _cef_request_t* request, cef_string_t* redirectUrl,
      struct _cef_stream_reader_t** resourceStream,
      struct _cef_response_t* response, int loadFlags);

  ///
  // Called on the UI thread after a response to the resource request is
  // received. Set |filter| if response content needs to be monitored and/or
  // modified as it arrives.
  ///
  void (CEF_CALLBACK *on_resource_response)(struct _cef_request_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* url,
      struct _cef_response_t* response,
      struct _cef_content_filter_t** filter);

  ///
  // Called on the IO thread to handle requests for URLs with an unknown
  // protocol component. Return true (1) to indicate that the request should
  // succeed because it was handled externally. Set |allowOSExecution| to true
  // (1) and return false (0) to attempt execution via the registered OS
  // protocol handler, if any. If false (0) is returned and either
  // |allow_os_execution| is false (0) or OS protocol handler execution fails
  // then the request will fail with an error condition. SECURITY WARNING: YOU
  // SHOULD USE THIS METHOD TO ENFORCE RESTRICTIONS BASED ON SCHEME, HOST OR
  // OTHER URL ANALYSIS BEFORE ALLOWING OS EXECUTION.
  ///
  int (CEF_CALLBACK *on_protocol_execution)(struct _cef_request_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* url,
      int* allowOSExecution);

  ///
  // Called on the UI thread when a server indicates via the 'Content-
  // Disposition' header that a response represents a file to download.
  // |mimeType| is the mime type for the download, |fileName| is the suggested
  // target file name and |contentLength| is either the value of the 'Content-
  // Size' header or -1 if no size was provided. Set |handler| to the
  // cef_download_handler_t instance that will recieve the file contents. Return
  // true (1) to download the file or false (0) to cancel the file download.
  ///
  int (CEF_CALLBACK *get_download_handler)(struct _cef_request_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* mimeType,
      const cef_string_t* fileName, int64 contentLength,
      struct _cef_download_handler_t** handler);

  ///
  // Called on the IO thread when the browser needs credentials from the user.
  // |isProxy| indicates whether the host is a proxy server. |host| contains the
  // hostname and port number. Set |username| and |password| and return true (1)
  // to handle the request. Return false (0) to cancel the request.
  ///
  int (CEF_CALLBACK *get_auth_credentials)(struct _cef_request_handler_t* self,
      struct _cef_browser_t* browser, int isProxy, const cef_string_t* host,
      const cef_string_t* realm, const cef_string_t* scheme,
      cef_string_t* username, cef_string_t* password);

} cef_request_handler_t;


///
// Implement this structure to handle events related to browser display state.
// The functions of this structure will be called on the UI thread.
///
typedef struct _cef_display_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called when the navigation state has changed.
  ///
  void (CEF_CALLBACK *on_nav_state_change)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, int canGoBack, int canGoForward);

  ///
  // Called when a frame's address has changed.
  ///
  void (CEF_CALLBACK *on_address_change)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      const cef_string_t* url);

  ///
  // Called when the page title changes.
  ///
  void (CEF_CALLBACK *on_title_change)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* title);

  ///
  // Called when the browser is about to display a tooltip. |text| contains the
  // text that will be displayed in the tooltip. To handle the display of the
  // tooltip yourself return true (1). Otherwise, you can optionally modify
  // |text| and then return false (0) to allow the browser to display the
  // tooltip.
  ///
  int (CEF_CALLBACK *on_tooltip)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, cef_string_t* text);

  ///
  // Called when the browser receives a status message. |text| contains the text
  // that will be displayed in the status message and |type| indicates the
  // status message type.
  ///
  void (CEF_CALLBACK *on_status_message)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* value,
      enum cef_handler_statustype_t type);

  ///
  // Called to display a console message. Return true (1) to stop the message
  // from being output to the console.
  ///
  int (CEF_CALLBACK *on_console_message)(struct _cef_display_handler_t* self,
      struct _cef_browser_t* browser, const cef_string_t* message,
      const cef_string_t* source, int line);

} cef_display_handler_t;


///
// Implement this structure to handle events related to focus. The functions of
// this structure will be called on the UI thread.
///
typedef struct _cef_focus_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called when the browser component is about to loose focus. For instance, if
  // focus was on the last HTML element and the user pressed the TAB key. |next|
  // will be true (1) if the browser is giving focus to the next component and
  // false (0) if the browser is giving focus to the previous component.
  ///
  void (CEF_CALLBACK *on_take_focus)(struct _cef_focus_handler_t* self,
      struct _cef_browser_t* browser, int next);

  ///
  // Called when the browser component is requesting focus. |isWidget| will be
  // true (1) if the focus is requested for a child widget of the browser
  // window. Return false (0) to allow the focus to be set or true (1) to cancel
  // setting the focus.
  ///
  int (CEF_CALLBACK *on_set_focus)(struct _cef_focus_handler_t* self,
      struct _cef_browser_t* browser, int isWidget);

} cef_focus_handler_t;


///
// Implement this structure to handle events related to keyboard input. The
// functions of this structure will be called on the UI thread.
///
typedef struct _cef_keyboard_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called when the browser component receives a keyboard event. |type| is the
  // type of keyboard event, |code| is the windows scan-code for the event,
  // |modifiers| is a set of bit-flags describing any pressed modifier keys and
  // |isSystemKey| is true (1) if Windows considers this a 'system key' message
  // (see http://msdn.microsoft.com/en-us/library/ms646286(VS.85).aspx). Return
  // true (1) if the keyboard event was handled or false (0) to allow the
  // browser component to handle the event.
  ///
  int (CEF_CALLBACK *on_key_event)(struct _cef_keyboard_handler_t* self,
      struct _cef_browser_t* browser, enum cef_handler_keyevent_type_t type,
      int code, int modifiers, int isSystemKey);

} cef_keyboard_handler_t;


///
// Implement this structure to handle events related to browser context menus.
// The functions of this structure will be called on the UI thread.
///
typedef struct _cef_menu_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called before a context menu is displayed. Return false (0) to display the
  // default context menu or true (1) to cancel the display.
  ///
  int (CEF_CALLBACK *on_before_menu)(struct _cef_menu_handler_t* self,
      struct _cef_browser_t* browser,
      const struct _cef_handler_menuinfo_t* menuInfo);

  ///
  // Called to optionally override the default text for a context menu item.
  // |label| contains the default text and may be modified to substitute
  // alternate text.
  ///
  void (CEF_CALLBACK *get_menu_label)(struct _cef_menu_handler_t* self,
      struct _cef_browser_t* browser, enum cef_handler_menuid_t menuId,
      cef_string_t* label);

  ///
  // Called when an option is selected from the default context menu. Return
  // false (0) to execute the default action or true (1) to cancel the action.
  ///
  int (CEF_CALLBACK *on_menu_action)(struct _cef_menu_handler_t* self,
      struct _cef_browser_t* browser, enum cef_handler_menuid_t menuId);

} cef_menu_handler_t;


///
// Implement this structure to handle events related to printing. The functions
// of this structure will be called on the UI thread.
///
typedef struct _cef_print_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called to allow customization of standard print options before the print
  // dialog is displayed. |printOptions| allows specification of paper size,
  // orientation and margins. Note that the specified margins may be adjusted if
  // they are outside the range supported by the printer. All units are in
  // inches. Return false (0) to display the default print options or true (1)
  // to display the modified |printOptions|.
  ///
  int (CEF_CALLBACK *get_print_options)(struct _cef_print_handler_t* self,
      struct _cef_browser_t* browser,
      struct _cef_print_options_t* printOptions);

  ///
  // Called to format print headers and footers. |printInfo| contains platform-
  // specific information about the printer context. |url| is the URL if the
  // currently printing page, |title| is the title of the currently printing
  // page, |currentPage| is the current page number and |maxPages| is the total
  // number of pages. Six default header locations are provided by the
  // implementation: top left, top center, top right, bottom left, bottom center
  // and bottom right. To use one of these default locations just assign a
  // string to the appropriate variable. To draw the header and footer yourself
  // return true (1). Otherwise, populate the approprate variables and return
  // false (0).
  ///
  int (CEF_CALLBACK *get_print_header_footer)(struct _cef_print_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      const struct _cef_print_info_t* printInfo, const cef_string_t* url,
      const cef_string_t* title, int currentPage, int maxPages,
      cef_string_t* topLeft, cef_string_t* topCenter, cef_string_t* topRight,
      cef_string_t* bottomLeft, cef_string_t* bottomCenter,
      cef_string_t* bottomRight);

} cef_print_handler_t;


///
// Implement this structure to handle events related to find results. The
// functions of this structure will be called on the UI thread.
///
typedef struct _cef_find_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called to report find results returned by cef_browser_t::find().
  // |identifer| is the identifier passed to cef_browser_t::find(), |count| is
  // the number of matches currently identified, |selectionRect| is the location
  // of where the match was found (in window coordinates), |activeMatchOrdinal|
  // is the current position in the search results, and |finalUpdate| is true
  // (1) if this is the last find notification.
  ///
  void (CEF_CALLBACK *on_find_result)(struct _cef_find_handler_t* self,
      struct _cef_browser_t* browser, int identifier, int count,
      const cef_rect_t* selectionRect, int activeMatchOrdinal,
      int finalUpdate);

} cef_find_handler_t;


///
// Implement this structure to handle events related to JavaScript dialogs. The
// functions of this structure will be called on the UI thread.
///
typedef struct _cef_jsdialog_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called  to run a JavaScript alert message. Return false (0) to display the
  // default alert or true (1) if you displayed a custom alert.
  ///
  int (CEF_CALLBACK *on_jsalert)(struct _cef_jsdialog_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      const cef_string_t* message);

  ///
  // Called to run a JavaScript confirm request. Return false (0) to display the
  // default alert or true (1) if you displayed a custom alert. If you handled
  // the alert set |retval| to true (1) if the user accepted the confirmation.
  ///
  int (CEF_CALLBACK *on_jsconfirm)(struct _cef_jsdialog_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      const cef_string_t* message, int* retval);

  ///
  // Called to run a JavaScript prompt request. Return false (0) to display the
  // default prompt or true (1) if you displayed a custom prompt. If you handled
  // the prompt set |retval| to true (1) if the user accepted the prompt and
  // request and |result| to the resulting value.
  ///
  int (CEF_CALLBACK *on_jsprompt)(struct _cef_jsdialog_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      const cef_string_t* message, const cef_string_t* defaultValue,
      int* retval, cef_string_t* result);

} cef_jsdialog_handler_t;


///
// Implement this structure to handle JavaScript binding. The functions of this
// structure will be called on the UI thread.
///
typedef struct _cef_jsbinding_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called for adding values to a frame's JavaScript 'window' object.
  ///
  void (CEF_CALLBACK *on_jsbinding)(struct _cef_jsbinding_handler_t* self,
      struct _cef_browser_t* browser, struct _cef_frame_t* frame,
      struct _cef_v8value_t* object);

} cef_jsbinding_handler_t;


///
// Implement this structure to handle events when window rendering is disabled.
// The functions of this structure will be called on the UI thread.
///
typedef struct _cef_render_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called to retrieve the view rectangle which is relative to screen
  // coordinates. Return true (1) if the rectangle was provided.
  ///
  int (CEF_CALLBACK *get_view_rect)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, cef_rect_t* rect);

  ///
  // Called to retrieve the simulated screen rectangle. Return true (1) if the
  // rectangle was provided.
  ///
  int (CEF_CALLBACK *get_screen_rect)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, cef_rect_t* rect);

  ///
  // Called to retrieve the translation from view coordinates to actual screen
  // coordinates. Return true (1) if the screen coordinates were provided.
  ///
  int (CEF_CALLBACK *get_screen_point)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, int viewX, int viewY, int* screenX,
      int* screenY);

  ///
  // Called when the browser wants to show or hide the popup widget. The popup
  // should be shown if |show| is true (1) and hidden if |show| is false (0).
  ///
  void (CEF_CALLBACK *on_popup_show)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, int show);

  ///
  // Called when the browser wants to move or resize the popup widget. |rect|
  // contains the new location and size.
  ///
  void (CEF_CALLBACK *on_popup_size)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, const cef_rect_t* rect);

  ///
  // Called when an element should be painted. |type| indicates whether the
  // element is the view or the popup widget. |buffer| contains the pixel data
  // for the whole image. |dirtyRect| indicates the portion of the image that
  // has been repainted. On Windows |buffer| will be width*height*4 bytes in
  // size and represents a BGRA image with an upper-left origin.
  ///
  void (CEF_CALLBACK *on_paint)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, enum cef_paint_element_type_t type,
      const cef_rect_t* dirtyRect, const void* buffer);

  ///
  // Called when the browser window's cursor has changed.
  ///
  void (CEF_CALLBACK *on_cursor_change)(struct _cef_render_handler_t* self,
      struct _cef_browser_t* browser, cef_cursor_handle_t cursor);

} cef_render_handler_t;


///
// Implement this structure to provide handler implementations.
///
typedef struct _cef_client_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Return the handler for browser life span events.
  ///
  struct _cef_life_span_handler_t* (CEF_CALLBACK *get_life_span_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for browser load status events.
  ///
  struct _cef_load_handler_t* (CEF_CALLBACK *get_load_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for browser request events.
  ///
  struct _cef_request_handler_t* (CEF_CALLBACK *get_request_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for browser display state events.
  ///
  struct _cef_display_handler_t* (CEF_CALLBACK *get_display_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for focus events.
  ///
  struct _cef_focus_handler_t* (CEF_CALLBACK *get_focus_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for keyboard events.
  ///
  struct _cef_keyboard_handler_t* (CEF_CALLBACK *get_keyboard_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for context menu events.
  ///
  struct _cef_menu_handler_t* (CEF_CALLBACK *get_menu_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for printing events.
  ///
  struct _cef_print_handler_t* (CEF_CALLBACK *get_print_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for find result events.
  ///
  struct _cef_find_handler_t* (CEF_CALLBACK *get_find_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for JavaScript dialog events.
  ///
  struct _cef_jsdialog_handler_t* (CEF_CALLBACK *get_jsdialog_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for JavaScript binding events.
  ///
  struct _cef_jsbinding_handler_t* (CEF_CALLBACK *get_jsbinding_handler)(
      struct _cef_client_t* self);

  ///
  // Return the handler for off-screen rendering events.
  ///
  struct _cef_render_handler_t* (CEF_CALLBACK *get_render_handler)(
      struct _cef_client_t* self);

} cef_client_t;


///
// Structure used to represent a web request. The functions of this structure
// may be called on any thread.
///
typedef struct _cef_request_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Get the fully qualified URL.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_url)(struct _cef_request_t* self);

  ///
  // Set the fully qualified URL.
  ///
  void (CEF_CALLBACK *set_url)(struct _cef_request_t* self,
      const cef_string_t* url);

  ///
  // Get the request function type. The value will default to POST if post data
  // is provided and GET otherwise.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_method)(struct _cef_request_t* self);

  ///
  // Set the request function type.
  ///
  void (CEF_CALLBACK *set_method)(struct _cef_request_t* self,
      const cef_string_t* method);

  ///
  // Get the post data.
  ///
  struct _cef_post_data_t* (CEF_CALLBACK *get_post_data)(
      struct _cef_request_t* self);

  ///
  // Set the post data.
  ///
  void (CEF_CALLBACK *set_post_data)(struct _cef_request_t* self,
      struct _cef_post_data_t* postData);

  ///
  // Get the header values.
  ///
  void (CEF_CALLBACK *get_header_map)(struct _cef_request_t* self,
      cef_string_map_t headerMap);

  ///
  // Set the header values.
  ///
  void (CEF_CALLBACK *set_header_map)(struct _cef_request_t* self,
      cef_string_map_t headerMap);

  ///
  // Set all values at one time.
  ///
  void (CEF_CALLBACK *set)(struct _cef_request_t* self, const cef_string_t* url,
      const cef_string_t* method, struct _cef_post_data_t* postData,
      cef_string_map_t headerMap);

  ///
  // Get the flags used in combination with cef_web_urlrequest_t.
  ///
  enum cef_weburlrequest_flags_t (CEF_CALLBACK *get_flags)(
      struct _cef_request_t* self);

  ///
  // Set the flags used in combination with cef_web_urlrequest_t.
  ///
  void (CEF_CALLBACK *set_flags)(struct _cef_request_t* self,
      enum cef_weburlrequest_flags_t flags);

  ///
  // Set the URL to the first party for cookies used in combination with
  // cef_web_urlrequest_t.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_first_party_for_cookies)(
      struct _cef_request_t* self);

  ///
  // Get the URL to the first party for cookies used in combination with
  // cef_web_urlrequest_t.
  ///
  void (CEF_CALLBACK *set_first_party_for_cookies)(struct _cef_request_t* self,
      const cef_string_t* url);

} cef_request_t;


///
// Create a new cef_request_t object.
///
CEF_EXPORT cef_request_t* cef_request_create();


///
// Structure used to represent post data for a web request. The functions of
// this structure may be called on any thread.
///
typedef struct _cef_post_data_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Returns the number of existing post data elements.
  ///
  size_t (CEF_CALLBACK *get_element_count)(struct _cef_post_data_t* self);

  ///
  // Retrieve the post data elements.
  ///
  struct _cef_post_data_element_t* (CEF_CALLBACK *get_elements)(
      struct _cef_post_data_t* self, int elementIndex);

  ///
  // Remove the specified post data element.  Returns true (1) if the removal
  // succeeds.
  ///
  int (CEF_CALLBACK *remove_element)(struct _cef_post_data_t* self,
      struct _cef_post_data_element_t* element);

  ///
  // Add the specified post data element.  Returns true (1) if the add succeeds.
  ///
  int (CEF_CALLBACK *add_element)(struct _cef_post_data_t* self,
      struct _cef_post_data_element_t* element);

  ///
  // Remove all existing post data elements.
  ///
  void (CEF_CALLBACK *remove_elements)(struct _cef_post_data_t* self);

} cef_post_data_t;


///
// Create a new cef_post_data_t object.
///
CEF_EXPORT cef_post_data_t* cef_post_data_create();


///
// Structure used to represent a single element in the request post data. The
// functions of this structure may be called on any thread.
///
typedef struct _cef_post_data_element_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Remove all contents from the post data element.
  ///
  void (CEF_CALLBACK *set_to_empty)(struct _cef_post_data_element_t* self);

  ///
  // The post data element will represent a file.
  ///
  void (CEF_CALLBACK *set_to_file)(struct _cef_post_data_element_t* self,
      const cef_string_t* fileName);

  ///
  // The post data element will represent bytes.  The bytes passed in will be
  // copied.
  ///
  void (CEF_CALLBACK *set_to_bytes)(struct _cef_post_data_element_t* self,
      size_t size, const void* bytes);

  ///
  // Return the type of this post data element.
  ///
  enum cef_postdataelement_type_t (CEF_CALLBACK *get_type)(
      struct _cef_post_data_element_t* self);

  ///
  // Return the file name.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_file)(
      struct _cef_post_data_element_t* self);

  ///
  // Return the number of bytes.
  ///
  size_t (CEF_CALLBACK *get_bytes_count)(struct _cef_post_data_element_t* self);

  ///
  // Read up to |size| bytes into |bytes| and return the number of bytes
  // actually read.
  ///
  size_t (CEF_CALLBACK *get_bytes)(struct _cef_post_data_element_t* self,
      size_t size, void* bytes);

} cef_post_data_element_t;


///
// Create a new cef_post_data_element_t object.
///
CEF_EXPORT cef_post_data_element_t* cef_post_data_element_create();


///
// Structure used to represent a web response. The functions of this structure
// may be called on any thread.
///
typedef struct _cef_response_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Get the response status code.
  ///
  int (CEF_CALLBACK *get_status)(struct _cef_response_t* self);

  ///
  // Set the response status code.
  ///
  void (CEF_CALLBACK *set_status)(struct _cef_response_t* self, int status);

  ///
  // Get the response status text.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_status_text)(
      struct _cef_response_t* self);

  ///
  // Set the response status text.
  ///
  void (CEF_CALLBACK *set_status_text)(struct _cef_response_t* self,
      const cef_string_t* statusText);

  ///
  // Get the response mime type.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_mime_type)(
      struct _cef_response_t* self);

  ///
  // Set the response mime type.
  ///
  void (CEF_CALLBACK *set_mime_type)(struct _cef_response_t* self,
      const cef_string_t* mimeType);

  ///
  // Get the value for the specified response header field.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_header)(struct _cef_response_t* self,
      const cef_string_t* name);

  ///
  // Get all response header fields.
  ///
  void (CEF_CALLBACK *get_header_map)(struct _cef_response_t* self,
      cef_string_map_t headerMap);

  ///
  // Set all response header fields.
  ///
  void (CEF_CALLBACK *set_header_map)(struct _cef_response_t* self,
      cef_string_map_t headerMap);

} cef_response_t;


///
// Structure the client can implement to provide a custom stream reader. The
// functions of this structure may be called on any thread.
///
typedef struct _cef_read_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Read raw binary data.
  ///
  size_t (CEF_CALLBACK *read)(struct _cef_read_handler_t* self, void* ptr,
      size_t size, size_t n);

  ///
  // Seek to the specified offset position. |whence| may be any one of SEEK_CUR,
  // SEEK_END or SEEK_SET.
  ///
  int (CEF_CALLBACK *seek)(struct _cef_read_handler_t* self, long offset,
      int whence);

  ///
  // Return the current offset position.
  ///
  long (CEF_CALLBACK *tell)(struct _cef_read_handler_t* self);

  ///
  // Return non-zero if at end of file.
  ///
  int (CEF_CALLBACK *eof)(struct _cef_read_handler_t* self);

} cef_read_handler_t;


///
// Structure used to read data from a stream. The functions of this structure
// may be called on any thread.
///
typedef struct _cef_stream_reader_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Read raw binary data.
  ///
  size_t (CEF_CALLBACK *read)(struct _cef_stream_reader_t* self, void* ptr,
      size_t size, size_t n);

  ///
  // Seek to the specified offset position. |whence| may be any one of SEEK_CUR,
  // SEEK_END or SEEK_SET. Returns zero on success and non-zero on failure.
  ///
  int (CEF_CALLBACK *seek)(struct _cef_stream_reader_t* self, long offset,
      int whence);

  ///
  // Return the current offset position.
  ///
  long (CEF_CALLBACK *tell)(struct _cef_stream_reader_t* self);

  ///
  // Return non-zero if at end of file.
  ///
  int (CEF_CALLBACK *eof)(struct _cef_stream_reader_t* self);

} cef_stream_reader_t;


///
// Create a new cef_stream_reader_t object from a file.
///
CEF_EXPORT cef_stream_reader_t* cef_stream_reader_create_for_file(
    const cef_string_t* fileName);

///
// Create a new cef_stream_reader_t object from data.
///
CEF_EXPORT cef_stream_reader_t* cef_stream_reader_create_for_data(void* data,
    size_t size);

///
// Create a new cef_stream_reader_t object from a custom handler.
///
CEF_EXPORT cef_stream_reader_t* cef_stream_reader_create_for_handler(
    cef_read_handler_t* handler);


///
// Structure the client can implement to provide a custom stream writer. The
// functions of this structure may be called on any thread.
///
typedef struct _cef_write_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Write raw binary data.
  ///
  size_t (CEF_CALLBACK *write)(struct _cef_write_handler_t* self,
      const void* ptr, size_t size, size_t n);

  ///
  // Seek to the specified offset position. |whence| may be any one of SEEK_CUR,
  // SEEK_END or SEEK_SET.
  ///
  int (CEF_CALLBACK *seek)(struct _cef_write_handler_t* self, long offset,
      int whence);

  ///
  // Return the current offset position.
  ///
  long (CEF_CALLBACK *tell)(struct _cef_write_handler_t* self);

  ///
  // Flush the stream.
  ///
  int (CEF_CALLBACK *flush)(struct _cef_write_handler_t* self);

} cef_write_handler_t;


///
// Structure used to write data to a stream. The functions of this structure may
// be called on any thread.
///
typedef struct _cef_stream_writer_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Write raw binary data.
  ///
  size_t (CEF_CALLBACK *write)(struct _cef_stream_writer_t* self,
      const void* ptr, size_t size, size_t n);

  ///
  // Seek to the specified offset position. |whence| may be any one of SEEK_CUR,
  // SEEK_END or SEEK_SET.
  ///
  int (CEF_CALLBACK *seek)(struct _cef_stream_writer_t* self, long offset,
      int whence);

  ///
  // Return the current offset position.
  ///
  long (CEF_CALLBACK *tell)(struct _cef_stream_writer_t* self);

  ///
  // Flush the stream.
  ///
  int (CEF_CALLBACK *flush)(struct _cef_stream_writer_t* self);

} cef_stream_writer_t;


///
// Create a new cef_stream_writer_t object for a file.
///
CEF_EXPORT cef_stream_writer_t* cef_stream_writer_create_for_file(
    const cef_string_t* fileName);

///
// Create a new cef_stream_writer_t object for a custom handler.
///
CEF_EXPORT cef_stream_writer_t* cef_stream_writer_create_for_handler(
    cef_write_handler_t* handler);


///
// Structure that encapsulates a V8 context handle.
///
typedef struct _cef_v8context_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Returns the browser for this context.
  ///
  struct _cef_browser_t* (CEF_CALLBACK *get_browser)(
      struct _cef_v8context_t* self);

  ///
  // Returns the frame for this context.
  ///
  struct _cef_frame_t* (CEF_CALLBACK *get_frame)(struct _cef_v8context_t* self);

  ///
  // Returns the global object for this context.
  ///
  struct _cef_v8value_t* (CEF_CALLBACK *get_global)(
      struct _cef_v8context_t* self);

  ///
  // Enter this context. A context must be explicitly entered before creating a
  // V8 Object, Array or Function asynchronously. exit() must be called the same
  // number of times as enter() before releasing this context. V8 objects belong
  // to the context in which they are created. Returns true (1) if the scope was
  // entered successfully.
  ///
  int (CEF_CALLBACK *enter)(struct _cef_v8context_t* self);

  ///
  // Exit this context. Call this function only after calling enter(). Returns
  // true (1) if the scope was exited successfully.
  ///
  int (CEF_CALLBACK *exit)(struct _cef_v8context_t* self);

} cef_v8context_t;


///
// Returns the current (top) context object in the V8 context stack.
///
CEF_EXPORT cef_v8context_t* cef_v8context_get_current_context();

///
// Returns the entered (bottom) context object in the V8 context stack.
///
CEF_EXPORT cef_v8context_t* cef_v8context_get_entered_context();


///
// Structure that should be implemented to handle V8 function calls. The
// functions of this structure will always be called on the UI thread.
///
typedef struct _cef_v8handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Execute with the specified argument list and return value. Return true (1)
  // if the function was handled. To invoke V8 callback functions outside the
  // scope of this function you need to keep references to the current V8
  // context (cef_v8context_t) along with any necessary callback objects.
  ///
  int (CEF_CALLBACK *execute)(struct _cef_v8handler_t* self,
      const cef_string_t* name, struct _cef_v8value_t* object,
      size_t argumentCount, struct _cef_v8value_t* const* arguments,
      struct _cef_v8value_t** retval, cef_string_t* exception);

} cef_v8handler_t;


///
// Structure that should be implemented to handle V8 accessor calls. Accessor
// identifiers are registered by calling cef_v8value_t::set_value(). The
// functions of this structure will always be called on the UI thread.
///
typedef struct _cef_v8accessor_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called to get an accessor value. |name| is the name of the property being
  // accessed. |object| is the This() object from V8's AccessorInfo structure.
  // |retval| is the value to return for this property. Return true (1) if
  // handled.
  ///
  int (CEF_CALLBACK *get)(struct _cef_v8accessor_t* self,
      const cef_string_t* name, struct _cef_v8value_t* object,
      struct _cef_v8value_t** retval);

  ///
  // Called to set an accessor value. |name| is the name of the property being
  // accessed. |value| is the new value being assigned to this property.
  // |object| is the This() object from V8's AccessorInfo structure. Return true
  // (1) if handled.
  ///
  int (CEF_CALLBACK *set)(struct _cef_v8accessor_t* self,
      const cef_string_t* name, struct _cef_v8value_t* object,
      struct _cef_v8value_t* value);

} cef_v8accessor_t;


///
// Structure representing a V8 value. The functions of this structure should
// only be called on the UI thread.
///
typedef struct _cef_v8value_t
{
  // Base structure.
  cef_base_t base;

  ///
  // True if the value type is undefined.
  ///
  int (CEF_CALLBACK *is_undefined)(struct _cef_v8value_t* self);

  ///
  // True if the value type is null.
  ///
  int (CEF_CALLBACK *is_null)(struct _cef_v8value_t* self);

  ///
  // True if the value type is bool.
  ///
  int (CEF_CALLBACK *is_bool)(struct _cef_v8value_t* self);

  ///
  // True if the value type is int.
  ///
  int (CEF_CALLBACK *is_int)(struct _cef_v8value_t* self);

  ///
  // True if the value type is double.
  ///
  int (CEF_CALLBACK *is_double)(struct _cef_v8value_t* self);

  ///
  // True if the value type is Date.
  ///
  int (CEF_CALLBACK *is_date)(struct _cef_v8value_t* self);

  ///
  // True if the value type is string.
  ///
  int (CEF_CALLBACK *is_string)(struct _cef_v8value_t* self);

  ///
  // True if the value type is object.
  ///
  int (CEF_CALLBACK *is_object)(struct _cef_v8value_t* self);

  ///
  // True if the value type is array.
  ///
  int (CEF_CALLBACK *is_array)(struct _cef_v8value_t* self);

  ///
  // True if the value type is function.
  ///
  int (CEF_CALLBACK *is_function)(struct _cef_v8value_t* self);

  ///
  // Returns true (1) if this object is pointing to the same handle as |that|
  // object.
  ///
  int (CEF_CALLBACK *is_same)(struct _cef_v8value_t* self,
      struct _cef_v8value_t* that);

  ///
  // Return a bool value.  The underlying data will be converted to if
  // necessary.
  ///
  int (CEF_CALLBACK *get_bool_value)(struct _cef_v8value_t* self);

  ///
  // Return an int value.  The underlying data will be converted to if
  // necessary.
  ///
  int (CEF_CALLBACK *get_int_value)(struct _cef_v8value_t* self);

  ///
  // Return a double value.  The underlying data will be converted to if
  // necessary.
  ///
  double (CEF_CALLBACK *get_double_value)(struct _cef_v8value_t* self);

  ///
  // Return a Date value.  The underlying data will be converted to if
  // necessary.
  ///
  cef_time_t (CEF_CALLBACK *get_date_value)(struct _cef_v8value_t* self);

  ///
  // Return a string value.  The underlying data will be converted to if
  // necessary.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_string_value)(
      struct _cef_v8value_t* self);


  // OBJECT METHODS - These functions are only available on objects. Arrays and
  // functions are also objects. String- and integer-based keys can be used
  // interchangably with the framework converting between them as necessary.
  // Keys beginning with "Cef::" and "v8::" are reserved by the system.

  ///
  // Returns true (1) if the object has a value with the specified identifier.
  ///
  int (CEF_CALLBACK *has_value_bykey)(struct _cef_v8value_t* self,
      const cef_string_t* key);

  ///
  // Returns true (1) if the object has a value with the specified identifier.
  ///
  int (CEF_CALLBACK *has_value_byindex)(struct _cef_v8value_t* self, int index);

  ///
  // Delete the value with the specified identifier.
  ///
  int (CEF_CALLBACK *delete_value_bykey)(struct _cef_v8value_t* self,
      const cef_string_t* key);

  ///
  // Delete the value with the specified identifier.
  ///
  int (CEF_CALLBACK *delete_value_byindex)(struct _cef_v8value_t* self,
      int index);

  ///
  // Returns the value with the specified identifier.
  ///
  struct _cef_v8value_t* (CEF_CALLBACK *get_value_bykey)(
      struct _cef_v8value_t* self, const cef_string_t* key);

  ///
  // Returns the value with the specified identifier.
  ///
  struct _cef_v8value_t* (CEF_CALLBACK *get_value_byindex)(
      struct _cef_v8value_t* self, int index);

  ///
  // Associate a value with the specified identifier.
  ///
  int (CEF_CALLBACK *set_value_bykey)(struct _cef_v8value_t* self,
      const cef_string_t* key, struct _cef_v8value_t* value);

  ///
  // Associate a value with the specified identifier.
  ///
  int (CEF_CALLBACK *set_value_byindex)(struct _cef_v8value_t* self, int index,
      struct _cef_v8value_t* value);

  ///
  // Register an identifier whose access will be forwarded to the
  // cef_v8accessor_t instance passed to
  // cef_v8value_t::cef_v8value_create_object_with_accessor().
  ///
  int (CEF_CALLBACK *set_value_byaccessor)(struct _cef_v8value_t* self,
      const cef_string_t* key, enum cef_v8_accesscontrol_t settings,
      enum cef_v8_propertyattribute_t attribute);

  ///
  // Read the keys for the object's values into the specified vector. Integer-
  // based keys will also be returned as strings.
  ///
  int (CEF_CALLBACK *get_keys)(struct _cef_v8value_t* self,
      cef_string_list_t keys);

  ///
  // Returns the user data, if any, specified when the object was created.
  ///
  struct _cef_base_t* (CEF_CALLBACK *get_user_data)(
      struct _cef_v8value_t* self);


  // ARRAY METHODS - These functions are only available on arrays.

  ///
  // Returns the number of elements in the array.
  ///
  int (CEF_CALLBACK *get_array_length)(struct _cef_v8value_t* self);


  // FUNCTION METHODS - These functions are only available on functions.

  ///
  // Returns the function name.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_function_name)(
      struct _cef_v8value_t* self);

  ///
  // Returns the function handler or NULL if not a CEF-created function.
  ///
  struct _cef_v8handler_t* (CEF_CALLBACK *get_function_handler)(
      struct _cef_v8value_t* self);

  ///
  // Execute the function using the current V8 context.
  ///
  int (CEF_CALLBACK *execute_function)(struct _cef_v8value_t* self,
      struct _cef_v8value_t* object, size_t argumentCount,
      struct _cef_v8value_t* const* arguments, struct _cef_v8value_t** retval,
      cef_string_t* exception);

  ///
  // Execute the function using the specified V8 context.
  ///
  int (CEF_CALLBACK *execute_function_with_context)(struct _cef_v8value_t* self,
      struct _cef_v8context_t* context, struct _cef_v8value_t* object,
      size_t argumentCount, struct _cef_v8value_t* const* arguments,
      struct _cef_v8value_t** retval, cef_string_t* exception);

} cef_v8value_t;


///
// Create a new cef_v8value_t object of type undefined.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_undefined();

///
// Create a new cef_v8value_t object of type null.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_null();

///
// Create a new cef_v8value_t object of type bool.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_bool(int value);

///
// Create a new cef_v8value_t object of type int.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_int(int value);

///
// Create a new cef_v8value_t object of type double.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_double(double value);

///
// Create a new cef_v8value_t object of type Date.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_date(const cef_time_t* date);

///
// Create a new cef_v8value_t object of type string.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_string(const cef_string_t* value);

///
// Create a new cef_v8value_t object of type object.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_object(cef_base_t* user_data);

///
// Create a new cef_v8value_t object of type object with accessors.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_object_with_accessor(
    cef_base_t* user_data, cef_v8accessor_t* accessor);

///
// Create a new cef_v8value_t object of type array.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_array();

///
// Create a new cef_v8value_t object of type function.
///
CEF_EXPORT cef_v8value_t* cef_v8value_create_function(const cef_string_t* name,
    cef_v8handler_t* handler);


///
// Structure that creates cef_scheme_handler_t instances. The functions of this
// structure will always be called on the IO thread.
///
typedef struct _cef_scheme_handler_factory_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Return a new scheme handler instance to handle the request.
  ///
  struct _cef_scheme_handler_t* (CEF_CALLBACK *create)(
      struct _cef_scheme_handler_factory_t* self,
      const cef_string_t* scheme_name, struct _cef_request_t* request);

} cef_scheme_handler_factory_t;


///
// Structure used to represent a custom scheme handler structure. The functions
// of this structure will always be called on the IO thread.
///
typedef struct _cef_scheme_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Process the request. All response generation should take place in this
  // function. If there is no response set |response_length| to zero or return
  // false (0) and read_response() will not be called. If the response length is
  // not known set |response_length| to -1 and read_response() will be called
  // until it returns false (0) or until the value of |bytes_read| is set to 0.
  // If the response length is known set |response_length| to a positive value
  // and read_response() will be called until it returns false (0), the value of
  // |bytes_read| is set to 0 or the specified number of bytes have been read.
  // Use the |response| object to set the mime type, http status code and
  // optional header values for the response and return true (1). To redirect
  // the request to a new URL set |redirectUrl| to the new URL and return true
  // (1).
  ///
  int (CEF_CALLBACK *process_request)(struct _cef_scheme_handler_t* self,
      struct _cef_request_t* request, cef_string_t* redirectUrl,
      struct _cef_response_t* response, int* response_length);

  ///
  // Cancel processing of the request.
  ///
  void (CEF_CALLBACK *cancel)(struct _cef_scheme_handler_t* self);

  ///
  // Copy up to |bytes_to_read| bytes into |data_out|. If the copy succeeds set
  // |bytes_read| to the number of bytes copied and return true (1). If the copy
  // fails return false (0) and read_response() will not be called again.
  ///
  int (CEF_CALLBACK *read_response)(struct _cef_scheme_handler_t* self,
      void* data_out, int bytes_to_read, int* bytes_read);

} cef_scheme_handler_t;


///
// Structure used to handle file downloads. The functions of this structure will
// always be called on the UI thread.
///
typedef struct _cef_download_handler_t
{
  // Base structure.
  cef_base_t base;

  ///
  // A portion of the file contents have been received. This function will be
  // called multiple times until the download is complete. Return |true (1)| to
  // continue receiving data and |false (0)| to cancel.
  ///
  int (CEF_CALLBACK *received_data)(struct _cef_download_handler_t* self,
      void* data, int data_size);

  ///
  // The download is complete.
  ///
  void (CEF_CALLBACK *complete)(struct _cef_download_handler_t* self);

} cef_download_handler_t;


///
// Structure used to make a Web URL request. Web URL requests are not associated
// with a browser instance so no cef_client_t callbacks will be executed. The
// functions of this structure may be called on any thread.
///
typedef struct _cef_web_urlrequest_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Cancels the request.
  ///
  void (CEF_CALLBACK *cancel)(struct _cef_web_urlrequest_t* self);

  ///
  // Returns the current ready state of the request.
  ///
  enum cef_weburlrequest_state_t (CEF_CALLBACK *get_state)(
      struct _cef_web_urlrequest_t* self);

} cef_web_urlrequest_t;


///
// Create a new CefWebUrlRequest object.
///
CEF_EXPORT cef_web_urlrequest_t* cef_web_urlrequest_create(
    cef_request_t* request, struct _cef_web_urlrequest_client_t* client);


///
// Structure that should be implemented by the cef_web_urlrequest_t client. The
// functions of this structure will always be called on the UI thread.
///
typedef struct _cef_web_urlrequest_client_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Notifies the client that the request state has changed. State change
  // notifications will always be sent before the below notification functions
  // are called.
  ///
  void (CEF_CALLBACK *on_state_change)(
      struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester,
      enum cef_weburlrequest_state_t state);

  ///
  // Notifies the client that the request has been redirected and  provides a
  // chance to change the request parameters.
  ///
  void (CEF_CALLBACK *on_redirect)(struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester, struct _cef_request_t* request,
      struct _cef_response_t* response);

  ///
  // Notifies the client of the response data.
  ///
  void (CEF_CALLBACK *on_headers_received)(
      struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester,
      struct _cef_response_t* response);

  ///
  // Notifies the client of the upload progress.
  ///
  void (CEF_CALLBACK *on_progress)(struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester, uint64 bytesSent,
      uint64 totalBytesToBeSent);

  ///
  // Notifies the client that content has been received.
  ///
  void (CEF_CALLBACK *on_data)(struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester, const void* data,
      int dataLength);

  ///
  // Notifies the client that the request ended with an error.
  ///
  void (CEF_CALLBACK *on_error)(struct _cef_web_urlrequest_client_t* self,
      struct _cef_web_urlrequest_t* requester,
      enum cef_handler_errorcode_t errorCode);

} cef_web_urlrequest_client_t;


///
// Structure that supports the reading of XML data via the libxml streaming API.
// The functions of this structure should only be called on the thread that
// creates the object.
///
typedef struct _cef_xml_reader_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Moves the cursor to the next node in the document. This function must be
  // called at least once to set the current cursor position. Returns true (1)
  // if the cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_next_node)(struct _cef_xml_reader_t* self);

  ///
  // Close the document. This should be called directly to ensure that cleanup
  // occurs on the correct thread.
  ///
  int (CEF_CALLBACK *close)(struct _cef_xml_reader_t* self);

  ///
  // Returns true (1) if an error has been reported by the XML parser.
  ///
  int (CEF_CALLBACK *has_error)(struct _cef_xml_reader_t* self);

  ///
  // Returns the error string.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_error)(
      struct _cef_xml_reader_t* self);


  // The below functions retrieve data for the node at the current cursor
  // position.

  ///
  // Returns the node type.
  ///
  enum cef_xml_node_type_t (CEF_CALLBACK *get_type)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the node depth. Depth starts at 0 for the root node.
  ///
  int (CEF_CALLBACK *get_depth)(struct _cef_xml_reader_t* self);

  ///
  // Returns the local name. See http://www.w3.org/TR/REC-xml-names/#NT-
  // LocalPart for additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_local_name)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the namespace prefix. See http://www.w3.org/TR/REC-xml-names/ for
  // additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_prefix)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the qualified name, equal to (Prefix:)LocalName. See
  // http://www.w3.org/TR/REC-xml-names/#ns-qualnames for additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_qualified_name)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the URI defining the namespace associated with the node. See
  // http://www.w3.org/TR/REC-xml-names/ for additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_namespace_uri)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the base URI of the node. See http://www.w3.org/TR/xmlbase/ for
  // additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_base_uri)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the xml:lang scope within which the node resides. See
  // http://www.w3.org/TR/REC-xml/#sec-lang-tag for additional details.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_xml_lang)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns true (1) if the node represents an NULL element. <a/> is considered
  // NULL but <a></a> is not.
  ///
  int (CEF_CALLBACK *is_empty_element)(struct _cef_xml_reader_t* self);

  ///
  // Returns true (1) if the node has a text value.
  ///
  int (CEF_CALLBACK *has_value)(struct _cef_xml_reader_t* self);

  ///
  // Returns the text value.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_value)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns true (1) if the node has attributes.
  ///
  int (CEF_CALLBACK *has_attributes)(struct _cef_xml_reader_t* self);

  ///
  // Returns the number of attributes.
  ///
  size_t (CEF_CALLBACK *get_attribute_count)(struct _cef_xml_reader_t* self);

  ///
  // Returns the value of the attribute at the specified 0-based index.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_attribute_byindex)(
      struct _cef_xml_reader_t* self, int index);

  ///
  // Returns the value of the attribute with the specified qualified name.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_attribute_byqname)(
      struct _cef_xml_reader_t* self, const cef_string_t* qualifiedName);

  ///
  // Returns the value of the attribute with the specified local name and
  // namespace URI.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_attribute_bylname)(
      struct _cef_xml_reader_t* self, const cef_string_t* localName,
      const cef_string_t* namespaceURI);

  ///
  // Returns an XML representation of the current node's children.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_inner_xml)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns an XML representation of the current node including its children.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_outer_xml)(
      struct _cef_xml_reader_t* self);

  ///
  // Returns the line number for the current node.
  ///
  int (CEF_CALLBACK *get_line_number)(struct _cef_xml_reader_t* self);


  // Attribute nodes are not traversed by default. The below functions can be
  // used to move the cursor to an attribute node. move_to_carrying_element()
  // can be called afterwards to return the cursor to the carrying element. The
  // depth of an attribute node will be 1 + the depth of the carrying element.

  ///
  // Moves the cursor to the attribute at the specified 0-based index. Returns
  // true (1) if the cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_attribute_byindex)(struct _cef_xml_reader_t* self,
      int index);

  ///
  // Moves the cursor to the attribute with the specified qualified name.
  // Returns true (1) if the cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_attribute_byqname)(struct _cef_xml_reader_t* self,
      const cef_string_t* qualifiedName);

  ///
  // Moves the cursor to the attribute with the specified local name and
  // namespace URI. Returns true (1) if the cursor position was set
  // successfully.
  ///
  int (CEF_CALLBACK *move_to_attribute_bylname)(struct _cef_xml_reader_t* self,
      const cef_string_t* localName, const cef_string_t* namespaceURI);

  ///
  // Moves the cursor to the first attribute in the current element. Returns
  // true (1) if the cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_first_attribute)(struct _cef_xml_reader_t* self);

  ///
  // Moves the cursor to the next attribute in the current element. Returns true
  // (1) if the cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_next_attribute)(struct _cef_xml_reader_t* self);

  ///
  // Moves the cursor back to the carrying element. Returns true (1) if the
  // cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_carrying_element)(struct _cef_xml_reader_t* self);

} cef_xml_reader_t;


///
// Create a new cef_xml_reader_t object. The returned object's functions can
// only be called from the thread that created the object.
///
CEF_EXPORT cef_xml_reader_t* cef_xml_reader_create(cef_stream_reader_t* stream,
    enum cef_xml_encoding_type_t encodingType, const cef_string_t* URI);


///
// Structure that supports the reading of zip archives via the zlib unzip API.
// The functions of this structure should only be called on the thread that
// creates the object.
///
typedef struct _cef_zip_reader_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Moves the cursor to the first file in the archive. Returns true (1) if the
  // cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_first_file)(struct _cef_zip_reader_t* self);

  ///
  // Moves the cursor to the next file in the archive. Returns true (1) if the
  // cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_next_file)(struct _cef_zip_reader_t* self);

  ///
  // Moves the cursor to the specified file in the archive. If |caseSensitive|
  // is true (1) then the search will be case sensitive. Returns true (1) if the
  // cursor position was set successfully.
  ///
  int (CEF_CALLBACK *move_to_file)(struct _cef_zip_reader_t* self,
      const cef_string_t* fileName, int caseSensitive);

  ///
  // Closes the archive. This should be called directly to ensure that cleanup
  // occurs on the correct thread.
  ///
  int (CEF_CALLBACK *close)(struct _cef_zip_reader_t* self);


  // The below functions act on the file at the current cursor position.

  ///
  // Returns the name of the file.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_file_name)(
      struct _cef_zip_reader_t* self);

  ///
  // Returns the uncompressed size of the file.
  ///
  long (CEF_CALLBACK *get_file_size)(struct _cef_zip_reader_t* self);

  ///
  // Returns the last modified timestamp for the file.
  ///
  time_t (CEF_CALLBACK *get_file_last_modified)(struct _cef_zip_reader_t* self);

  ///
  // Opens the file for reading of uncompressed data. A read password may
  // optionally be specified.
  ///
  int (CEF_CALLBACK *open_file)(struct _cef_zip_reader_t* self,
      const cef_string_t* password);

  ///
  // Closes the file.
  ///
  int (CEF_CALLBACK *close_file)(struct _cef_zip_reader_t* self);

  ///
  // Read uncompressed file contents into the specified buffer. Returns < 0 if
  // an error occurred, 0 if at the end of file, or the number of bytes read.
  ///
  int (CEF_CALLBACK *read_file)(struct _cef_zip_reader_t* self, void* buffer,
      size_t bufferSize);

  ///
  // Returns the current offset in the uncompressed file contents.
  ///
  long (CEF_CALLBACK *tell)(struct _cef_zip_reader_t* self);

  ///
  // Returns true (1) if at end of the file contents.
  ///
  int (CEF_CALLBACK *eof)(struct _cef_zip_reader_t* self);

} cef_zip_reader_t;


///
// Create a new cef_zip_reader_t object. The returned object's functions can
// only be called from the thread that created the object.
///
CEF_EXPORT cef_zip_reader_t* cef_zip_reader_create(cef_stream_reader_t* stream);


///
// Structure to implement for visiting the DOM. The functions of this structure
// will be called on the UI thread.
///
typedef struct _cef_domvisitor_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Method executed for visiting the DOM. The document object passed to this
  // function represents a snapshot of the DOM at the time this function is
  // executed. DOM objects are only valid for the scope of this function. Do not
  // keep references to or attempt to access any DOM objects outside the scope
  // of this function.
  ///
  void (CEF_CALLBACK *visit)(struct _cef_domvisitor_t* self,
      struct _cef_domdocument_t* document);

} cef_domvisitor_t;


///
// Structure used to represent a DOM document. The functions of this structure
// should only be called on the UI thread.
///
typedef struct _cef_domdocument_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Returns the document type.
  ///
  enum cef_dom_document_type_t (CEF_CALLBACK *get_type)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the root document node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_document)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the BODY node of an HTML document.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_body)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the HEAD node of an HTML document.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_head)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the title of an HTML document.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_title)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the document element with the specified ID value.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_element_by_id)(
      struct _cef_domdocument_t* self, const cef_string_t* id);

  ///
  // Returns the node that currently has keyboard focus.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_focused_node)(
      struct _cef_domdocument_t* self);

  ///
  // Returns true (1) if a portion of the document is selected.
  ///
  int (CEF_CALLBACK *has_selection)(struct _cef_domdocument_t* self);

  ///
  // Returns the selection start node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_selection_start_node)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the selection offset within the start node.
  ///
  int (CEF_CALLBACK *get_selection_start_offset)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the selection end node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_selection_end_node)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the selection offset within the end node.
  ///
  int (CEF_CALLBACK *get_selection_end_offset)(struct _cef_domdocument_t* self);

  ///
  // Returns the contents of this selection as markup.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_selection_as_markup)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the contents of this selection as text.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_selection_as_text)(
      struct _cef_domdocument_t* self);

  ///
  // Returns the base URL for the document.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_base_url)(
      struct _cef_domdocument_t* self);

  ///
  // Returns a complete URL based on the document base URL and the specified
  // partial URL.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_complete_url)(
      struct _cef_domdocument_t* self, const cef_string_t* partialURL);

} cef_domdocument_t;


///
// Structure used to represent a DOM node. The functions of this structure
// should only be called on the UI thread.
///
typedef struct _cef_domnode_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Returns the type for this node.
  ///
  enum cef_dom_node_type_t (CEF_CALLBACK *get_type)(
      struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this is a text node.
  ///
  int (CEF_CALLBACK *is_text)(struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this is an element node.
  ///
  int (CEF_CALLBACK *is_element)(struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this object is pointing to the same handle as |that|
  // object.
  ///
  int (CEF_CALLBACK *is_same)(struct _cef_domnode_t* self,
      struct _cef_domnode_t* that);

  ///
  // Returns the name of this node.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_name)(struct _cef_domnode_t* self);

  ///
  // Returns the value of this node.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_value)(struct _cef_domnode_t* self);

  ///
  // Set the value of this node. Returns true (1) on success.
  ///
  int (CEF_CALLBACK *set_value)(struct _cef_domnode_t* self,
      const cef_string_t* value);

  ///
  // Returns the contents of this node as markup.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_as_markup)(
      struct _cef_domnode_t* self);

  ///
  // Returns the document associated with this node.
  ///
  struct _cef_domdocument_t* (CEF_CALLBACK *get_document)(
      struct _cef_domnode_t* self);

  ///
  // Returns the parent node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_parent)(
      struct _cef_domnode_t* self);

  ///
  // Returns the previous sibling node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_previous_sibling)(
      struct _cef_domnode_t* self);

  ///
  // Returns the next sibling node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_next_sibling)(
      struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this node has child nodes.
  ///
  int (CEF_CALLBACK *has_children)(struct _cef_domnode_t* self);

  ///
  // Return the first child node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_first_child)(
      struct _cef_domnode_t* self);

  ///
  // Returns the last child node.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_last_child)(
      struct _cef_domnode_t* self);

  ///
  // Add an event listener to this node for the specified event type. If
  // |useCapture| is true (1) then this listener will be considered a capturing
  // listener. Capturing listeners will recieve all events of the specified type
  // before the events are dispatched to any other event targets beneath the
  // current node in the tree. Events which are bubbling upwards through the
  // tree will not trigger a capturing listener. Separate calls to this function
  // can be used to register the same listener with and without capture. See
  // WebCore/dom/EventNames.h for the list of supported event types.
  ///
  void (CEF_CALLBACK *add_event_listener)(struct _cef_domnode_t* self,
      const cef_string_t* eventType, struct _cef_domevent_listener_t* listener,
      int useCapture);


  // The following functions are valid only for element nodes.

  ///
  // Returns the tag name of this element.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_element_tag_name)(
      struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this element has attributes.
  ///
  int (CEF_CALLBACK *has_element_attributes)(struct _cef_domnode_t* self);

  ///
  // Returns true (1) if this element has an attribute named |attrName|.
  ///
  int (CEF_CALLBACK *has_element_attribute)(struct _cef_domnode_t* self,
      const cef_string_t* attrName);

  ///
  // Returns the element attribute named |attrName|.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_element_attribute)(
      struct _cef_domnode_t* self, const cef_string_t* attrName);

  ///
  // Returns a map of all element attributes.
  ///
  void (CEF_CALLBACK *get_element_attributes)(struct _cef_domnode_t* self,
      cef_string_map_t attrMap);

  ///
  // Set the value for the element attribute named |attrName|. Returns true (1)
  // on success.
  ///
  int (CEF_CALLBACK *set_element_attribute)(struct _cef_domnode_t* self,
      const cef_string_t* attrName, const cef_string_t* value);

  ///
  // Returns the inner text of the element.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_element_inner_text)(
      struct _cef_domnode_t* self);

} cef_domnode_t;


///
// Structure used to represent a DOM event. The functions of this structure
// should only be called on the UI thread.
///
typedef struct _cef_domevent_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Returns the event type.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t (CEF_CALLBACK *get_type)(struct _cef_domevent_t* self);

  ///
  // Returns the event category.
  ///
  enum cef_dom_event_category_t (CEF_CALLBACK *get_category)(
      struct _cef_domevent_t* self);

  ///
  // Returns the event processing phase.
  ///
  enum cef_dom_event_phase_t (CEF_CALLBACK *get_phase)(
      struct _cef_domevent_t* self);

  ///
  // Returns true (1) if the event can bubble up the tree.
  ///
  int (CEF_CALLBACK *can_bubble)(struct _cef_domevent_t* self);

  ///
  // Returns true (1) if the event can be canceled.
  ///
  int (CEF_CALLBACK *can_cancel)(struct _cef_domevent_t* self);

  ///
  // Returns the document associated with this event.
  ///
  struct _cef_domdocument_t* (CEF_CALLBACK *get_document)(
      struct _cef_domevent_t* self);

  ///
  // Returns the target of the event.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_target)(
      struct _cef_domevent_t* self);

  ///
  // Returns the current target of the event.
  ///
  struct _cef_domnode_t* (CEF_CALLBACK *get_current_target)(
      struct _cef_domevent_t* self);

} cef_domevent_t;


///
// Structure to implement for handling DOM events. The functions of this
// structure will be called on the UI thread.
///
typedef struct _cef_domevent_listener_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Called when an event is received. The event object passed to this function
  // contains a snapshot of the DOM at the time this function is executed. DOM
  // objects are only valid for the scope of this function. Do not keep
  // references to or attempt to access any DOM objects outside the scope of
  // this function.
  ///
  void (CEF_CALLBACK *handle_event)(struct _cef_domevent_listener_t* self,
      struct _cef_domevent_t* event);

} cef_domevent_listener_t;


///
// Structure to implement for filtering response content. The functions of this
// structure will always be called on the UI thread.
///
typedef struct _cef_content_filter_t
{
  // Base structure.
  cef_base_t base;

  ///
  // Set |substitute_data| to the replacement for the data in |data| if data
  // should be modified.
  ///
  void (CEF_CALLBACK *process_data)(struct _cef_content_filter_t* self,
      const void* data, int data_size,
      struct _cef_stream_reader_t** substitute_data);

  ///
  // Called when there is no more data to be processed. It is expected that
  // whatever data was retained in the last process_data() call, it should be
  // returned now by setting |remainder| if appropriate.
  ///
  void (CEF_CALLBACK *drain)(struct _cef_content_filter_t* self,
      struct _cef_stream_reader_t** remainder);

} cef_content_filter_t;


#ifdef __cplusplus
}
#endif

#endif // _CEF_CAPI_H