CEF4Delphi/source/uCEFRequestContext.pas

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
//         https://www.briskbard.com/index.php?lang=en&pageid=cef
//
//        Copyright � 2017 Salvador D�az Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
 *                       Delphi Chromium Embedded 3
 *
 * Usage allowed under the restrictions of the Lesser GNU General Public License
 * or alternatively the restrictions of the Mozilla Public License 1.1
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * Unit owner : Henri Gourvest <hgourvest@gmail.com>
 * Web site   : http://www.progdigy.com
 * Repository : http://code.google.com/p/delphichromiumembedded/
 * Group      : http://groups.google.com/group/delphichromiumembedded
 *
 * Embarcadero Technologies, Inc is not permitted to use or redistribute
 * this source code without explicit permission.
 *
 *)

unit uCEFRequestContext;

{$IFNDEF CPUX64}
  {$ALIGN ON}
  {$MINENUMSIZE 4}
{$ENDIF}

{$I cef.inc}

interface

uses
  {$IFDEF DELPHI16_UP}
  System.Classes,
  {$ELSE}
  Classes,
  {$ENDIF}
  uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;

type
  TCefRequestContextRef = class(TCefBaseRefCountedRef, ICefRequestContext)
    protected
      function IsSame(const other: ICefRequestContext): Boolean;
      function IsSharingWith(const other: ICefRequestContext): Boolean;
      function IsGlobal: Boolean;
      function GetHandler: ICefRequestContextHandler;
      function GetCachePath: ustring;
      function GetDefaultCookieManager(const callback: ICefCompletionCallback): ICefCookieManager;
      function GetDefaultCookieManagerProc(const callback: TCefCompletionCallbackProc): ICefCookieManager;
      function RegisterSchemeHandlerFactory(const schemeName, domainName: ustring; const factory: ICefSchemeHandlerFactory): Boolean;
      function ClearSchemeHandlerFactories: Boolean;
      procedure PurgePluginListCache(reloadPages: Boolean);
      function HasPreference(const name: ustring): Boolean;
      function GetPreference(const name: ustring): ICefValue;
      function GetAllPreferences(includeDefaults: Boolean): ICefDictionaryValue;
      function CanSetPreference(const name: ustring): Boolean;
      function SetPreference(const name: ustring; const value: ICefValue; out error: ustring): Boolean;
      procedure ClearCertificateExceptions(const callback: ICefCompletionCallback);
      procedure CloseAllConnections(const callback: ICefCompletionCallback);
      procedure ResolveHost(const origin: ustring; const callback: ICefResolveCallback);
      function ResolveHostCached(const origin: ustring; resolvedIps: TStrings): TCefErrorCode;

    public
      class function UnWrap(data: Pointer): ICefRequestContext;
      class function Global: ICefRequestContext;
      class function New(const settings: PCefRequestContextSettings; const handler: ICefRequestContextHandler): ICefRequestContext;
      class function Shared(const other: ICefRequestContext; const handler: ICefRequestContextHandler): ICefRequestContext;
  end;

implementation

uses
  uCEFMiscFunctions, uCEFLibFunctions, uCEFValue, uCEFDictionaryValue, uCEFCookieManager,
  uCEFCompletionCallback, uCEFRequestContextHandler;

function TCefRequestContextRef.ClearSchemeHandlerFactories: Boolean;
begin
  Result := PCefRequestContext(FData).clear_scheme_handler_factories(FData) <> 0;
end;

function TCefRequestContextRef.GetCachePath: ustring;
begin
  Result := CefStringFreeAndGet(PCefRequestContext(FData).get_cache_path(FData));
end;

function TCefRequestContextRef.GetDefaultCookieManager(
  const callback: ICefCompletionCallback): ICefCookieManager;
begin
  Result := TCefCookieManagerRef.UnWrap(
    PCefRequestContext(FData).get_default_cookie_manager(
      FData, CefGetData(callback)));
end;

function TCefRequestContextRef.GetDefaultCookieManagerProc(
  const callback: TCefCompletionCallbackProc): ICefCookieManager;
begin
  Result := GetDefaultCookieManager(TCefFastCompletionCallback.Create(callback));
end;

function TCefRequestContextRef.GetHandler: ICefRequestContextHandler;
begin
  Result := TCefRequestContextHandlerRef.UnWrap(PCefRequestContext(FData).get_handler(FData));
end;

class function TCefRequestContextRef.Global: ICefRequestContext;
begin
  Result:= UnWrap(cef_request_context_get_global_context());
end;

function TCefRequestContextRef.IsGlobal: Boolean;
begin
  Result:= PCefRequestContext(FData).is_global(FData) <> 0;
end;

function TCefRequestContextRef.IsSame(const other: ICefRequestContext): Boolean;
begin
  Result:= PCefRequestContext(FData).is_same(FData, CefGetData(other)) <> 0;
end;

function TCefRequestContextRef.IsSharingWith(
  const other: ICefRequestContext): Boolean;
begin
  Result:= PCefRequestContext(FData).is_sharing_with(FData, CefGetData(other)) <> 0;
end;

class function TCefRequestContextRef.New(const settings: PCefRequestContextSettings;
                                         const handler: ICefRequestContextHandler): ICefRequestContext;
begin
  Result := UnWrap(cef_request_context_create_context(settings, CefGetData(handler)));
end;

procedure TCefRequestContextRef.PurgePluginListCache(reloadPages: Boolean);
begin
  PCefRequestContext(FData).purge_plugin_list_cache(FData, Ord(reloadPages));
end;

function TCefRequestContextRef.HasPreference(const name: ustring): Boolean;
var
  n: TCefString;
begin
  n := CefString(name);
  Result := PCefRequestContext(FData).has_preference(FData, @n) <> 0;
end;

function TCefRequestContextRef.GetPreference(const name: ustring): ICefValue;
var
  n: TCefString;
begin
  n := CefString(name);
  Result :=  TCefValueRef.UnWrap(PCefRequestContext(FData).get_preference(FData, @n));
end;

function TCefRequestContextRef.GetAllPreferences(includeDefaults: Boolean): ICefDictionaryValue;
begin
  Result := TCefDictionaryValueRef.UnWrap(PCefRequestContext(FData).get_all_preferences(FData, Ord(includeDefaults)));
end;

function TCefRequestContextRef.CanSetPreference(const name: ustring): Boolean;
var
  n: TCefString;
begin
  n := CefString(name);
  Result := PCefRequestContext(FData).can_set_preference(FData, @n) <> 0;
end;

function TCefRequestContextRef.SetPreference(const name: ustring; const value: ICefValue; out error: ustring): Boolean;
var
  n, e: TCefString;
begin
  n := CefString(name);
  FillChar(e, SizeOf(e), 0);
  Result := PCefRequestContext(FData).set_preference(FData, @n, CefGetData(value), @e) <> 0;
  error := CefString(@e);
end;

procedure TCefRequestContextRef.ClearCertificateExceptions(const callback: ICefCompletionCallback);
begin
  PCefRequestContext(FData).clear_certificate_exceptions(FData, CefGetData(callback));
end;

procedure TCefRequestContextRef.CloseAllConnections(const callback: ICefCompletionCallback);
begin
  PCefRequestContext(FData).close_all_connections(FData, CefGetData(callback));
end;

procedure TCefRequestContextRef.ResolveHost(const origin: ustring;
  const callback: ICefResolveCallback);
var
  o: TCefString;
begin
  o := CefString(origin);
  PCefRequestContext(FData).resolve_host(FData, @o, CefGetData(callback));
end;

function TCefRequestContextRef.ResolveHostCached(const origin: ustring;
  resolvedIps: TStrings): TCefErrorCode;
var
  ips: TCefStringList;
  o, str: TCefString;
  i: Integer;
begin
  ips := cef_string_list_alloc;
  try
    o := CefString(origin);
    Result := PCefRequestContext(FData).resolve_host_cached(FData, @o, ips);
    if Assigned(ips) then
      for i := 0 to cef_string_list_size(ips) - 1 do
      begin
        FillChar(str, SizeOf(str), 0);
        cef_string_list_value(ips, i, @str);
        resolvedIps.Add(CefStringClearAndGet(str));
      end;
  finally
    cef_string_list_free(ips);
  end;
end;

function TCefRequestContextRef.RegisterSchemeHandlerFactory(const schemeName,
  domainName: ustring; const factory: ICefSchemeHandlerFactory): Boolean;
var
  s, d: TCefString;
begin
  s := CefString(schemeName);
  d := CefString(domainName);
  Result := PCefRequestContext(FData).register_scheme_handler_factory(FData, @s, @d, CefGetData(factory)) <> 0;
end;

class function TCefRequestContextRef.Shared(const other: ICefRequestContext;
  const handler: ICefRequestContextHandler): ICefRequestContext;
begin
  Result := UnWrap(cef_create_context_shared(CefGetData(other), CefGetData(handler)));
end;

class function TCefRequestContextRef.UnWrap(data: Pointer): ICefRequestContext;
begin
  if data <> nil then
    Result := Create(data) as ICefRequestContext else
    Result := nil;
end;

end.