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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/source/uCEFTextfieldComponent.pas
2020-07-18 19:12:01 +02:00

448 lines
14 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 © 2020 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 uCEFTextfieldComponent;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
{$IFDEF MSWINDOWS}WinApi.Windows,{$ENDIF} System.Classes,
{$ELSE}
{$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes,
{$IFDEF FPC}
LCLProc, LCLType, LCLIntf, LResources, InterfaceBase,
{$ENDIF}
{$ENDIF}
uCEFTypes, uCEFInterfaces, uCEFViewsFrameworkEvents, uCEFViewComponent;
type
{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
TCEFTextfieldComponent = class(TCEFViewComponent, ICefTextfieldDelegateEvents)
protected
FTextfield : ICefTextfield;
// ICefTextfieldDelegateEvents
FOnTextfieldKeyEvent : TOnTextfieldKeyEventEvent;
FOnAfterUserAction : TOnAfterUserActionEvent;
procedure DestroyView; override;
procedure Initialize; override;
function GetInitialized : boolean; override;
function GetAsView : ICefView; override;
function GetAsTextfield : ICefTextfield; override;
function GetIsPasswordInput : boolean;
function GetIsReadOnly : boolean;
function GetText : ustring;
function GetHasSelection : boolean;
function GetSelectedText : ustring;
function GetSelectedRange : TCefRange;
function GetCursorPosition : NativeUInt;
function GetTextColor : TCefColor;
function GetSelectionTextColor : TCefColor;
function GetSelectionBackgroundColor : TCefColor;
function GetPlaceholderText : ustring;
procedure SetPasswordInput(password_input: boolean);
procedure SetReadOnly(read_only: boolean);
procedure SetText(const text_: ustring);
procedure SetTextColor(color: TCefColor);
procedure SetSelectionTextColor(color: TCefColor);
procedure SetSelectionBackgroundColor(color: TCefColor);
procedure SetPlaceholderText(const text_: ustring);
// ICefTextfieldDelegateEvents
procedure doOnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
procedure doOnAfterUserAction(const textfield: ICefTextfield);
// ICefViewDelegateEvents
procedure doCreateCustomView; override;
public
procedure CreateTextField;
procedure AppendText(const text_: ustring);
procedure InsertOrReplaceText(const text_: ustring);
procedure SelectAll(reversed: boolean);
procedure ClearSelection;
procedure SelectRange(const range: TCefRange);
procedure SetFontList(const font_list: ustring);
procedure ApplyTextColor(color: TCefColor; const range: TCefRange);
procedure ApplyTextStyle(style: TCefTextStyle; add: boolean; const range: TCefRange);
function IsCommandEnabled(command_id: TCefTextFieldCommands): boolean;
procedure ExecuteCommand(command_id: TCefTextFieldCommands);
procedure ClearEditHistory;
procedure SetAccessibleName(const name_: ustring);
procedure SetPlaceholderTextColor(color: TCefColor);
property PasswordInput : boolean read GetIsPasswordInput write SetPasswordInput;
property ReadOnly : boolean read GetIsReadOnly write SetReadOnly;
property Text : ustring read GetText write SetText;
property SelectedText : ustring read GetSelectedText;
property TextColor : TCefColor read GetTextColor write SetTextColor;
property SelectionTextColor : TCefColor read GetSelectionTextColor write SetSelectionTextColor;
property SelectionBackgroundColor : TCefColor read GetSelectionBackgroundColor write SetSelectionBackgroundColor;
property PlaceholderText : ustring read GetPlaceholderText write SetPlaceholderText;
property HasSelection : boolean read GetHasSelection;
published
property OnTextfieldKeyEvent : TOnTextfieldKeyEventEvent read FOnTextfieldKeyEvent write FOnTextfieldKeyEvent;
property OnAfterUserAction : TOnAfterUserActionEvent read FOnAfterUserAction write FOnAfterUserAction;
end;
{$IFDEF FPC}
procedure Register;
{$ENDIF}
// *********************************************************
// ********************** ATTENTION ! **********************
// *********************************************************
// ** **
// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
// ** **
// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
// ** THE SAME THREAD TO AVOID ERRORS. **
// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
// ** **
// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
// ** **
// ** READ THIS FOR MORE INFORMATION : **
// ** https://www.briskbard.com/index.php?pageid=cef **
// ** **
// ** USE OUR FORUMS FOR MORE QUESTIONS : **
// ** https://www.briskbard.com/forum/ **
// ** **
// *********************************************************
// *********************************************************
implementation
uses
uCEFTextfieldDelegate, uCEFMiscFunctions, uCEFTask, uCEFTextfield;
procedure TCEFTextfieldComponent.Initialize;
begin
inherited Initialize;
FTextfield := nil;
FOnTextfieldKeyEvent := nil;
FOnAfterUserAction := nil;
end;
procedure TCEFTextfieldComponent.DestroyView;
begin
FTextfield := nil;
end;
procedure TCEFTextfieldComponent.CreateTextField;
begin
CreateView;
end;
procedure TCEFTextfieldComponent.doOnKeyEvent(const textfield : ICefTextfield;
const event : TCefKeyEvent;
var aResult : boolean);
begin
if assigned(FOnTextfieldKeyEvent) then
FOnTextfieldKeyEvent(self, textfield, event, aResult);
end;
procedure TCEFTextfieldComponent.doOnAfterUserAction(const textfield: ICefTextfield);
begin
if assigned(FOnAfterUserAction) then
FOnAfterUserAction(self, textfield);
end;
procedure TCEFTextfieldComponent.doCreateCustomView;
var
TempDelegate : ICefTextfieldDelegate;
begin
if (FTextfield = nil) then
try
TempDelegate := TCustomTextfieldDelegate.Create(self);
FTextfield := TCefTextfieldRef.CreateTextField(TempDelegate);
finally
TempDelegate := nil;
end;
end;
function TCEFTextfieldComponent.GetInitialized : boolean;
begin
Result := (FTextfield <> nil);
end;
function TCEFTextfieldComponent.GetAsView : ICefView;
begin
Result := FTextfield as ICefView;
end;
function TCEFTextfieldComponent.GetAsTextfield : ICefTextfield;
begin
Result := FTextfield;
end;
function TCEFTextfieldComponent.GetIsPasswordInput : boolean;
begin
Result := Initialized and FTextfield.IsPasswordInput;
end;
function TCEFTextfieldComponent.GetIsReadOnly : boolean;
begin
Result := Initialized and FTextfield.IsReadOnly;
end;
function TCEFTextfieldComponent.GetText : ustring;
begin
if Initialized then
Result := FTextfield.GetText
else
Result := '';
end;
function TCEFTextfieldComponent.GetHasSelection : boolean;
begin
Result := Initialized and FTextfield.HasSelection;
end;
function TCEFTextfieldComponent.GetSelectedText : ustring;
begin
if Initialized then
Result := FTextfield.SelectedText
else
Result := '';
end;
function TCEFTextfieldComponent.GetSelectedRange : TCefRange;
var
TempRange : TCefRange;
begin
if Initialized then
TempRange := FTextfield.GetSelectedRange
else
begin
TempRange.from := 0;
TempRange.to_ := 0;
end;
Result := TempRange;
end;
function TCEFTextfieldComponent.GetCursorPosition : NativeUInt;
begin
if Initialized then
Result := FTextfield.GetCursorPosition
else
Result := 0;
end;
function TCEFTextfieldComponent.GetTextColor : TCefColor;
begin
if Initialized then
Result := FTextfield.GetTextColor
else
Result := 0;
end;
function TCEFTextfieldComponent.GetSelectionTextColor : TCefColor;
begin
if Initialized then
Result := FTextfield.GetSelectionTextColor
else
Result := 0;
end;
function TCEFTextfieldComponent.GetSelectionBackgroundColor : TCefColor;
begin
if Initialized then
Result := FTextfield.GetSelectionBackgroundColor
else
Result := 0;
end;
function TCEFTextfieldComponent.GetPlaceholderText : ustring;
begin
if Initialized then
Result := FTextfield.GetPlaceholderText
else
Result := '';
end;
procedure TCEFTextfieldComponent.SetPasswordInput(password_input: boolean);
begin
if Initialized then
FTextfield.SetPasswordInput(password_input);
end;
procedure TCEFTextfieldComponent.SetReadOnly(read_only: boolean);
begin
if Initialized then
FTextfield.SetReadOnly(read_only);
end;
procedure TCEFTextfieldComponent.SetText(const text_: ustring);
begin
if Initialized then
FTextfield.SetText(text_);
end;
procedure TCEFTextfieldComponent.SetTextColor(color: TCefColor);
begin
if Initialized then
FTextfield.SetTextColor(color);
end;
procedure TCEFTextfieldComponent.SetSelectionTextColor(color: TCefColor);
begin
if Initialized then
FTextfield.SetSelectionTextColor(color);
end;
procedure TCEFTextfieldComponent.SetSelectionBackgroundColor(color: TCefColor);
begin
if Initialized then
FTextfield.SetSelectionBackgroundColor(color);
end;
procedure TCEFTextfieldComponent.SetPlaceholderText(const text_: ustring);
begin
if Initialized then
FTextfield.SetPlaceholderText(text_);
end;
procedure TCEFTextfieldComponent.AppendText(const text_: ustring);
begin
if Initialized then
FTextfield.AppendText(text_);
end;
procedure TCEFTextfieldComponent.InsertOrReplaceText(const text_: ustring);
begin
if Initialized then
FTextfield.InsertOrReplaceText(text_);
end;
procedure TCEFTextfieldComponent.SelectAll(reversed: boolean);
begin
if Initialized then
FTextfield.SelectAll(reversed);
end;
procedure TCEFTextfieldComponent.ClearSelection;
begin
if Initialized then
FTextfield.ClearSelection;
end;
procedure TCEFTextfieldComponent.SelectRange(const range: TCefRange);
begin
if Initialized then
FTextfield.SelectRange(range);
end;
procedure TCEFTextfieldComponent.SetFontList(const font_list: ustring);
begin
if Initialized then
FTextfield.SetFontList(font_list);
end;
procedure TCEFTextfieldComponent.ApplyTextColor(color: TCefColor; const range: TCefRange);
begin
if Initialized then
FTextfield.ApplyTextColor(color, range);
end;
procedure TCEFTextfieldComponent.ApplyTextStyle(style: TCefTextStyle; add: boolean; const range: TCefRange);
begin
if Initialized then
FTextfield.ApplyTextStyle(style, add, range);
end;
function TCEFTextfieldComponent.IsCommandEnabled(command_id: TCefTextFieldCommands): boolean;
begin
Result := Initialized and FTextfield.IsCommandEnabled(command_id);
end;
procedure TCEFTextfieldComponent.ExecuteCommand(command_id: TCefTextFieldCommands);
begin
if Initialized then
FTextfield.ExecuteCommand(command_id);
end;
procedure TCEFTextfieldComponent.ClearEditHistory;
begin
if Initialized then
FTextfield.ClearEditHistory;
end;
procedure TCEFTextfieldComponent.SetAccessibleName(const name_: ustring);
begin
if Initialized then
FTextfield.SetAccessibleName(name_);
end;
procedure TCEFTextfieldComponent.SetPlaceholderTextColor(color: TCefColor);
begin
if Initialized then
FTextfield.SetPlaceholderTextColor(color);
end;
{$IFDEF FPC}
procedure Register;
begin
{$I res/tceftextfieldcomponent.lrs}
RegisterComponents('Chromium Views Framework', [TCEFTextfieldComponent]);
end;
{$ENDIF}
end.