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CEF4Delphi/source/uCEFv8Value.pas
2021-01-01 11:11:30 +01:00

559 lines
19 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF 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 © 2021 Salvador Diaz 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;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
System.Classes, System.SysUtils,
{$ELSE}
Classes, SysUtils,
{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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 IsArrayBuffer: 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 GetArrayBufferReleaseCallback : ICefv8ArrayBufferReleaseCallback;
function NeuterArrayBuffer : boolean;
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 NewArrayBuffer(buffer: Pointer; length: NativeUInt; const callback : ICefv8ArrayBufferReleaseCallback): ICefv8Value;
class function NewFunction(const name: ustring; const handler: ICefv8Handler): ICefv8Value;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFv8Accessor, uCEFv8Handler, uCEFv8Exception,
uCEFv8Interceptor, uCEFStringList, uCEFv8ArrayBufferReleaseCallback;
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.NewArrayBuffer( buffer : Pointer;
length : NativeUInt;
const callback : ICefv8ArrayBufferReleaseCallback): ICefv8Value;
begin
Result := UnWrap(cef_v8value_create_array_buffer(buffer, length, CefGetData(callback)));
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
TempValue : TCefTime;
begin
TempValue := DateTimeToCefTime(value);
Result := UnWrap(cef_v8value_create_date(@TempValue));
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
TempName : TCefString;
begin
TempName := CefString(name);
Result := UnWrap(cef_v8value_create_function(@TempName, 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
TempString : TCefString;
begin
TempString := CefString(str);
Result := UnWrap(cef_v8value_create_string(@TempString));
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
TempKey : TCefString;
begin
TempKey := CefString(key);
Result := PCefV8Value(FData)^.delete_value_bykey(PCefV8Value(FData), @TempKey) <> 0;
end;
function TCefv8ValueRef.ExecuteFunction(const obj: ICefv8Value; const arguments: TCefv8ValueArray): ICefv8Value;
var
args : PPCefV8Value;
i, j : NativeUInt;
begin
Result := nil;
args := nil;
try
try
if (arguments <> nil) then
begin
i := 0;
j := Length(arguments);
GetMem(args, SizeOf(PCefV8Value) * j);
while (i < j) do
begin
args^[i] := CefGetData(arguments[i]);
inc(i);
end;
end
else
j := 0;
Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.execute_function(PCefV8Value(FData),
CefGetData(obj),
j,
args));
except
on e : exception do
if CustomExceptionHandler('TCefv8ValueRef.ExecuteFunction', e) then raise;
end;
finally
if (args <> nil) then FreeMem(args);
end;
end;
function TCefv8ValueRef.ExecuteFunctionWithContext(const context : ICefv8Context;
const obj : ICefv8Value;
const arguments : TCefv8ValueArray): ICefv8Value;
var
args : PPCefV8Value;
i, j : NativeUInt;
begin
Result := nil;
args := nil;
try
try
if (arguments <> nil) then
begin
i := 0;
j := Length(arguments);
GetMem(args, SizeOf(PCefV8Value) * j);
while (i < j) do
begin
args^[i] := CefGetData(arguments[i]);
inc(i);
end;
end
else
j := 0;
Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.execute_function_with_context(PCefV8Value(FData),
CefGetData(context),
CefGetData(obj),
j,
args));
except
on e : exception do
if CustomExceptionHandler('TCefv8ValueRef.ExecuteFunctionWithContext', e) then raise;
end;
finally
if (args <> nil) then FreeMem(args);
end;
end;
function TCefv8ValueRef.GetArrayLength: Integer;
begin
Result := PCefV8Value(FData)^.get_array_length(PCefV8Value(FData));
end;
function TCefv8ValueRef.GetArrayBufferReleaseCallback : ICefv8ArrayBufferReleaseCallback;
begin
Result := TCefv8ArrayBufferReleaseCallbackRef.UnWrap(PCefV8Value(FData)^.get_array_buffer_release_callback(PCefV8Value(FData)));
end;
function TCefv8ValueRef.NeuterArrayBuffer : boolean;
begin
Result := PCefV8Value(FData)^.neuter_array_buffer(PCefV8Value(FData)) <> 0;
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
TempSL : ICefStringList;
begin
Result := 0;
TempSL := TCefStringListOwn.Create;
if (PCefV8Value(FData)^.get_keys(PCefV8Value(FData), TempSL.Handle) <> 0) then
begin
TempSL.CopyToStrings(keys);
Result := keys.Count;
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
TempKey : TCefString;
begin
TempKey := CefString(key);
Result := TCefv8ValueRef.UnWrap(PCefV8Value(FData)^.get_value_bykey(PCefV8Value(FData), @TempKey));
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
TempKey : TCefString;
begin
TempKey := CefString(key);
Result := PCefV8Value(FData)^.has_value_bykey(PCefV8Value(FData), @TempKey) <> 0;
end;
function TCefv8ValueRef.IsArray: Boolean;
begin
Result := PCefV8Value(FData)^.is_array(PCefV8Value(FData)) <> 0;
end;
function TCefv8ValueRef.IsArrayBuffer: Boolean;
begin
Result := PCefV8Value(FData)^.is_array_buffer(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
TempKey : TCefString;
begin
TempKey := CefString(key);
Result := PCefV8Value(FData)^.set_value_byaccessor(PCefV8Value(FData), @TempKey, 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
TempKey : TCefString;
begin
TempKey := CefString(key);
Result := PCefV8Value(FData)^.set_value_bykey(PCefV8Value(FData), @TempKey, 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.