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CEF4Delphi/source/uCEFPostData.pas

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// ************************************************************************
// ***************************** 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 � 2019 Salvador Diaz Fau. All rights reserved.
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//
// ************************************************************************
// ************ 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 uCEFPostData;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
uses
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{$IFDEF DELPHI16_UP}
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System.Classes, System.SysUtils,
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{$ELSE}
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Classes, SysUtils,
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{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
TCefPostDataRef = class(TCefBaseRefCountedRef, ICefPostData)
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protected
function IsReadOnly: Boolean;
function HasExcludedElements: Boolean;
function GetCount: NativeUInt;
function GetElements(Count: NativeUInt): IInterfaceList; // ICefPostDataElement
function RemoveElement(const element: ICefPostDataElement): Integer;
function AddElement(const element: ICefPostDataElement): Integer;
procedure RemoveElements;
public
class function UnWrap(data: Pointer): ICefPostData;
class function New: ICefPostData;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFPostDataElement;
function TCefPostDataRef.IsReadOnly: Boolean;
begin
Result := PCefPostData(FData)^.is_read_only(PCefPostData(FData)) <> 0;
end;
function TCefPostDataRef.HasExcludedElements: Boolean;
begin
Result := PCefPostData(FData)^.has_excluded_elements(PCefPostData(FData)) <> 0;
end;
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function TCefPostDataRef.AddElement(const element: ICefPostDataElement): Integer;
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begin
Result := PCefPostData(FData)^.add_element(PCefPostData(FData), CefGetData(element));
end;
function TCefPostDataRef.GetCount: NativeUInt;
begin
Result := PCefPostData(FData)^.get_element_count(PCefPostData(FData))
end;
function TCefPostDataRef.GetElements(Count: NativeUInt): IInterfaceList;
var
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items : PCefPostDataElementArray;
i : NativeUInt;
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begin
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Result := nil;
items := nil;
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try
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try
GetMem(items, SizeOf(PCefPostDataElement) * Count);
FillChar(items^, SizeOf(PCefPostDataElement) * Count, 0);
PCefPostData(FData)^.get_elements(PCefPostData(FData), @Count, items);
Result := TInterfaceList.Create;
i := 0;
while (i < Count) do
begin
Result.Add(TCefPostDataElementRef.UnWrap(items^[i]));
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inc(i);
end;
except
on e : exception do
if CustomExceptionHandler('TCefPostDataRef.GetElements', e) then raise;
end;
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finally
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if (items <> nil) then FreeMem(items);
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end;
end;
class function TCefPostDataRef.New: ICefPostData;
begin
Result := UnWrap(cef_post_data_create());
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end;
function TCefPostDataRef.RemoveElement(const element: ICefPostDataElement): Integer;
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begin
Result := PCefPostData(FData)^.remove_element(PCefPostData(FData), CefGetData(element));
end;
procedure TCefPostDataRef.RemoveElements;
begin
PCefPostData(FData)^.remove_elements(PCefPostData(FData));
end;
class function TCefPostDataRef.UnWrap(data: Pointer): ICefPostData;
begin
if (data <> nil) then
Result := Create(data) as ICefPostData
else
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Result := nil;
end;
end.