// ************************************************************************
// ***************************** 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 © 2018 Salvador Díaz 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 uCEFv8Value;

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

{$I cef.inc}

interface

uses
  {$IFDEF DELPHI16_UP}
  System.Classes,
  {$ELSE}
  Classes,
  {$ENDIF}
  uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFv8Types;

type
  TCefv8ValueRef = class(TCefBaseRefCountedRef, ICefv8Value)
    protected
      function IsValid: Boolean;
      function IsUndefined: Boolean;
      function IsNull: Boolean;
      function IsBool: Boolean;
      function IsInt: Boolean;
      function IsUInt: Boolean;
      function IsDouble: Boolean;
      function IsDate: Boolean;
      function IsString: Boolean;
      function IsObject: Boolean;
      function IsArray: Boolean;
      function IsFunction: Boolean;
      function IsSame(const that: ICefv8Value): Boolean;
      function GetBoolValue: Boolean;
      function GetIntValue: Integer;
      function GetUIntValue: Cardinal;
      function GetDoubleValue: Double;
      function GetDateValue: TDateTime;
      function GetStringValue: ustring;
      function IsUserCreated: Boolean;
      function HasException: Boolean;
      function GetException: ICefV8Exception;
      function ClearException: Boolean;
      function WillRethrowExceptions: Boolean;
      function SetRethrowExceptions(rethrow: Boolean): Boolean;
      function HasValueByKey(const key: ustring): Boolean;
      function HasValueByIndex(index: Integer): Boolean;
      function DeleteValueByKey(const key: ustring): Boolean;
      function DeleteValueByIndex(index: Integer): Boolean;
      function GetValueByKey(const key: ustring): ICefv8Value;
      function GetValueByIndex(index: Integer): ICefv8Value;
      function SetValueByKey(const key: ustring; const value: ICefv8Value; attribute: TCefV8PropertyAttributes): Boolean;
      function SetValueByIndex(index: Integer; const value: ICefv8Value): Boolean;
      function SetValueByAccessor(const key: ustring; settings: TCefV8AccessControls; attribute: TCefV8PropertyAttributes): Boolean;
      function GetKeys(const keys: TStrings): Integer;
      function SetUserData(const data: ICefv8Value): Boolean;
      function GetUserData: ICefv8Value;
      function GetExternallyAllocatedMemory: Integer;
      function AdjustExternallyAllocatedMemory(changeInBytes: Integer): Integer;
      function GetArrayLength: Integer;
      function GetFunctionName: ustring;
      function GetFunctionHandler: ICefv8Handler;
      function ExecuteFunction(const obj: ICefv8Value; const arguments: TCefv8ValueArray): ICefv8Value;
      function ExecuteFunctionWithContext(const context: ICefv8Context; const obj: ICefv8Value; const arguments: TCefv8ValueArray): ICefv8Value;

    public
      class function UnWrap(data: Pointer): ICefv8Value;
      class function NewUndefined: ICefv8Value;
      class function NewNull: ICefv8Value;
      class function NewBool(value: Boolean): ICefv8Value;
      class function NewInt(value: Integer): ICefv8Value;
      class function NewUInt(value: Cardinal): ICefv8Value;
      class function NewDouble(value: Double): ICefv8Value;
      class function NewDate(value: TDateTime): ICefv8Value;
      class function NewString(const str: ustring): ICefv8Value;
      class function NewObject(const Accessor: ICefV8Accessor; const Interceptor: ICefV8Interceptor): ICefv8Value;
      class function NewObjectProc(const getter: TCefV8AccessorGetterProc;
                                   const setter: TCefV8AccessorSetterProc;
                                   const getterbyname  : TCefV8InterceptorGetterByNameProc;
                                   const setterbyname  : TCefV8InterceptorSetterByNameProc;
                                   const getterbyindex : TCefV8InterceptorGetterByIndexProc;
                                   const setterbyindex : TCefV8InterceptorSetterByIndexProc): ICefv8Value;
      class function NewArray(len: Integer): ICefv8Value;
      class function NewFunction(const name: ustring; const handler: ICefv8Handler): ICefv8Value;
  end;

implementation

uses
  uCEFMiscFunctions, uCEFLibFunctions, uCEFv8Accessor, uCEFv8Handler, uCEFv8Exception, uCEFv8Interceptor;

function TCefv8ValueRef.AdjustExternallyAllocatedMemory(changeInBytes: Integer): Integer;
begin
  Result := PCefV8Value(FData)^.adjust_externally_allocated_memory(PCefV8Value(FData), changeInBytes);
end;

class function TCefv8ValueRef.NewArray(len: Integer): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_array(len));
end;

class function TCefv8ValueRef.NewBool(value: Boolean): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_bool(Ord(value)));
end;

class function TCefv8ValueRef.NewDate(value: TDateTime): ICefv8Value;
var
  dt: TCefTime;
begin
  dt := DateTimeToCefTime(value);
  Result := UnWrap(cef_v8value_create_date(@dt));
end;

class function TCefv8ValueRef.NewDouble(value: Double): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_double(value));
end;

class function TCefv8ValueRef.NewFunction(const name: ustring;
  const handler: ICefv8Handler): ICefv8Value;
var
  n: TCefString;
begin
  n := CefString(name);
  Result := UnWrap(cef_v8value_create_function(@n, CefGetData(handler)));
end;

class function TCefv8ValueRef.NewInt(value: Integer): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_int(value));
end;

class function TCefv8ValueRef.NewUInt(value: Cardinal): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_uint(value));
end;

class function TCefv8ValueRef.NewNull: ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_null);
end;

class function TCefv8ValueRef.NewObject(const Accessor: ICefV8Accessor; const Interceptor: ICefV8Interceptor): ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_object(CefGetData(Accessor), CefGetData(Interceptor)));
end;

class function TCefv8ValueRef.NewObjectProc(const getter: TCefV8AccessorGetterProc;
                                            const setter: TCefV8AccessorSetterProc;
                                            const getterbyname  : TCefV8InterceptorGetterByNameProc;
                                            const setterbyname  : TCefV8InterceptorSetterByNameProc;
                                            const getterbyindex : TCefV8InterceptorGetterByIndexProc;
                                            const setterbyindex : TCefV8InterceptorSetterByIndexProc): ICefv8Value;
begin
  Result := NewObject(TCefFastV8Accessor.Create(getter, setter) as ICefV8Accessor,
                      TCefFastV8Interceptor.Create(getterbyname, setterbyname, getterbyindex, setterbyindex) as ICefV8Interceptor);
end;

class function TCefv8ValueRef.NewString(const str: ustring): ICefv8Value;
var
  s: TCefString;
begin
  s := CefString(str);
  Result := UnWrap(cef_v8value_create_string(@s));
end;

class function TCefv8ValueRef.NewUndefined: ICefv8Value;
begin
  Result := UnWrap(cef_v8value_create_undefined);
end;

function TCefv8ValueRef.DeleteValueByIndex(index: Integer): Boolean;
begin
  Result := PCefV8Value(FData)^.delete_value_byindex(PCefV8Value(FData), index) <> 0;
end;

function TCefv8ValueRef.DeleteValueByKey(const key: ustring): Boolean;
var
  k: TCefString;
begin
  k := CefString(key);
  Result := PCefV8Value(FData)^.delete_value_bykey(PCefV8Value(FData), @k) <> 0;
end;

function TCefv8ValueRef.ExecuteFunction(const obj: ICefv8Value;
  const arguments: TCefv8ValueArray): ICefv8Value;
var
  args: PPCefV8Value;
  i: Integer;
begin
  GetMem(args, SizeOf(PCefV8Value) * Length(arguments));
  try
    for i := 0 to Length(arguments) - 1 do
      args[i] := CefGetData(arguments[i]);
    Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.execute_function(PCefV8Value(FData),
      CefGetData(obj), Length(arguments), args));
  finally
    FreeMem(args);
  end;
end;

function TCefv8ValueRef.ExecuteFunctionWithContext(const context: ICefv8Context;
  const obj: ICefv8Value; const arguments: TCefv8ValueArray): ICefv8Value;
var
  args: PPCefV8Value;
  i: Integer;
begin
  GetMem(args, SizeOf(PCefV8Value) * Length(arguments));
  try
    for i := 0 to Length(arguments) - 1 do
      args[i] := CefGetData(arguments[i]);
    Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.execute_function_with_context(PCefV8Value(FData),
      CefGetData(context), CefGetData(obj), Length(arguments), args));
  finally
    FreeMem(args);
  end;
end;

function TCefv8ValueRef.GetArrayLength: Integer;
begin
  Result := PCefV8Value(FData)^.get_array_length(PCefV8Value(FData));
end;

function TCefv8ValueRef.GetBoolValue: Boolean;
begin
  Result := PCefV8Value(FData)^.get_bool_value(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.GetDateValue: TDateTime;
begin
  Result := CefTimeToDateTime(PCefV8Value(FData)^.get_date_value(PCefV8Value(FData)));
end;

function TCefv8ValueRef.GetDoubleValue: Double;
begin
  Result := PCefV8Value(FData)^.get_double_value(PCefV8Value(FData));
end;

function TCefv8ValueRef.GetExternallyAllocatedMemory: Integer;
begin
  Result := PCefV8Value(FData)^.get_externally_allocated_memory(PCefV8Value(FData));
end;

function TCefv8ValueRef.GetFunctionHandler: ICefv8Handler;
begin
  Result := TCefv8HandlerRef.UnWrap(PCefV8Value(FData)^.get_function_handler(PCefV8Value(FData)));
end;

function TCefv8ValueRef.GetFunctionName: ustring;
begin
  Result := CefStringFreeAndGet(PCefV8Value(FData)^.get_function_name(PCefV8Value(FData)))
end;

function TCefv8ValueRef.GetIntValue: Integer;
begin
  Result := PCefV8Value(FData)^.get_int_value(PCefV8Value(FData))
end;

function TCefv8ValueRef.GetUIntValue: Cardinal;
begin
  Result := PCefV8Value(FData)^.get_uint_value(PCefV8Value(FData))
end;

function TCefv8ValueRef.GetKeys(const keys: TStrings): Integer;
var
  list: TCefStringList;
  i: Integer;
  str: TCefString;
begin
  list := cef_string_list_alloc;
  try
    Result := PCefV8Value(FData)^.get_keys(PCefV8Value(FData), list);
    FillChar(str, SizeOf(str), 0);
    for i := 0 to cef_string_list_size(list) - 1 do
    begin
      FillChar(str, SizeOf(str), 0);
      cef_string_list_value(list, i, @str);
      keys.Add(CefStringClearAndGet(str));
    end;
  finally
    cef_string_list_free(list);
  end;
end;

function TCefv8ValueRef.SetUserData(const data: ICefv8Value): Boolean;
begin
  Result := PCefV8Value(FData)^.set_user_data(PCefV8Value(FData), CefGetData(data)) <> 0;
end;

function TCefv8ValueRef.GetStringValue: ustring;
begin
  Result := CefStringFreeAndGet(PCefV8Value(FData)^.get_string_value(PCefV8Value(FData)));
end;

function TCefv8ValueRef.IsUserCreated: Boolean;
begin
  Result := PCefV8Value(FData)^.is_user_created(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsValid: Boolean;
begin
  Result := PCefV8Value(FData)^.is_valid(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.HasException: Boolean;
begin
  Result := PCefV8Value(FData)^.has_exception(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.GetException: ICefV8Exception;
begin
   Result := TCefV8ExceptionRef.UnWrap(PCefV8Value(FData)^.get_exception(PCefV8Value(FData)));
end;

function TCefv8ValueRef.ClearException: Boolean;
begin
  Result := PCefV8Value(FData)^.clear_exception(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.WillRethrowExceptions: Boolean;
begin
  Result := PCefV8Value(FData)^.will_rethrow_exceptions(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.SetRethrowExceptions(rethrow: Boolean): Boolean;
begin
  Result := PCefV8Value(FData)^.set_rethrow_exceptions(PCefV8Value(FData), Ord(rethrow)) <> 0;
end;

function TCefv8ValueRef.GetUserData: ICefv8Value;
begin
  Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.get_user_data(PCefV8Value(FData)));
end;

function TCefv8ValueRef.GetValueByIndex(index: Integer): ICefv8Value;
begin
  Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.get_value_byindex(PCefV8Value(FData), index))
end;

function TCefv8ValueRef.GetValueByKey(const key: ustring): ICefv8Value;
var
  k: TCefString;
begin
  k := CefString(key);
  Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.get_value_bykey(PCefV8Value(FData), @k))
end;

function TCefv8ValueRef.HasValueByIndex(index: Integer): Boolean;
begin
  Result := PCefV8Value(FData)^.has_value_byindex(PCefV8Value(FData), index) <> 0;
end;

function TCefv8ValueRef.HasValueByKey(const key: ustring): Boolean;
var
  k: TCefString;
begin
  k := CefString(key);
  Result := PCefV8Value(FData)^.has_value_bykey(PCefV8Value(FData), @k) <> 0;
end;

function TCefv8ValueRef.IsArray: Boolean;
begin
  Result := PCefV8Value(FData)^.is_array(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsBool: Boolean;
begin
  Result := PCefV8Value(FData)^.is_bool(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsDate: Boolean;
begin
  Result := PCefV8Value(FData)^.is_date(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsDouble: Boolean;
begin
  Result := PCefV8Value(FData)^.is_double(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsFunction: Boolean;
begin
  Result := PCefV8Value(FData)^.is_function(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsInt: Boolean;
begin
  Result := PCefV8Value(FData)^.is_int(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsUInt: Boolean;
begin
  Result := PCefV8Value(FData)^.is_uint(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsNull: Boolean;
begin
  Result := PCefV8Value(FData)^.is_null(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsObject: Boolean;
begin
  Result := PCefV8Value(FData)^.is_object(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsSame(const that: ICefv8Value): Boolean;
begin
  Result := PCefV8Value(FData)^.is_same(PCefV8Value(FData), CefGetData(that)) <> 0;
end;

function TCefv8ValueRef.IsString: Boolean;
begin
  Result := PCefV8Value(FData)^.is_string(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.IsUndefined: Boolean;
begin
  Result := PCefV8Value(FData)^.is_undefined(PCefV8Value(FData)) <> 0;
end;

function TCefv8ValueRef.SetValueByAccessor(const key: ustring;
  settings: TCefV8AccessControls; attribute: TCefV8PropertyAttributes): Boolean;
var
  k: TCefString;
begin
  k := CefString(key);
  Result:= PCefV8Value(FData)^.set_value_byaccessor(PCefV8Value(FData), @k,
    PByte(@settings)^, PByte(@attribute)^) <> 0;
end;

function TCefv8ValueRef.SetValueByIndex(index: Integer;
  const value: ICefv8Value): Boolean;
begin
  Result:= PCefV8Value(FData)^.set_value_byindex(PCefV8Value(FData), index, CefGetData(value)) <> 0;
end;

function TCefv8ValueRef.SetValueByKey(const key: ustring;
  const value: ICefv8Value; attribute: TCefV8PropertyAttributes): Boolean;
var
  k: TCefString;
begin
  k := CefString(key);
  Result:= PCefV8Value(FData)^.set_value_bykey(PCefV8Value(FData), @k,
    CefGetData(value), PByte(@attribute)^) <> 0;
end;

class function TCefv8ValueRef.UnWrap(data: Pointer): ICefv8Value;
begin
  if data <> nil then
    Result := Create(data) as ICefv8Value else
    Result := nil;
end;

end.