mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
448 lines
14 KiB
ObjectPascal
448 lines
14 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2021 Salvador Diaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uCEFTextfieldComponent;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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{$IFDEF MSWINDOWS}WinApi.Windows,{$ENDIF} System.Classes,
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{$ELSE}
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{$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes,
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{$IFDEF FPC}
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LCLProc, LCLType, LCLIntf, LResources, InterfaceBase,
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{$ENDIF}
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{$ENDIF}
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uCEFTypes, uCEFInterfaces, uCEFViewsFrameworkEvents, uCEFViewComponent;
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type
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{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
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TCEFTextfieldComponent = class(TCEFViewComponent, ICefTextfieldDelegateEvents)
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protected
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FTextfield : ICefTextfield;
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// ICefTextfieldDelegateEvents
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FOnTextfieldKeyEvent : TOnTextfieldKeyEventEvent;
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FOnAfterUserAction : TOnAfterUserActionEvent;
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procedure DestroyView; override;
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procedure Initialize; override;
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function GetInitialized : boolean; override;
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function GetAsView : ICefView; override;
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function GetAsTextfield : ICefTextfield; override;
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function GetIsPasswordInput : boolean;
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function GetIsReadOnly : boolean;
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function GetText : ustring;
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function GetHasSelection : boolean;
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function GetSelectedText : ustring;
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function GetSelectedRange : TCefRange;
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function GetCursorPosition : NativeUInt;
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function GetTextColor : TCefColor;
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function GetSelectionTextColor : TCefColor;
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function GetSelectionBackgroundColor : TCefColor;
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function GetPlaceholderText : ustring;
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procedure SetPasswordInput(password_input: boolean);
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procedure SetReadOnly(read_only: boolean);
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procedure SetText(const text_: ustring);
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procedure SetTextColor(color: TCefColor);
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procedure SetSelectionTextColor(color: TCefColor);
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procedure SetSelectionBackgroundColor(color: TCefColor);
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procedure SetPlaceholderText(const text_: ustring);
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// ICefTextfieldDelegateEvents
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procedure doOnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
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procedure doOnAfterUserAction(const textfield: ICefTextfield);
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// ICefViewDelegateEvents
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procedure doCreateCustomView; override;
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public
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procedure CreateTextField;
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procedure AppendText(const text_: ustring);
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procedure InsertOrReplaceText(const text_: ustring);
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procedure SelectAll(reversed: boolean);
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procedure ClearSelection;
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procedure SelectRange(const range: TCefRange);
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procedure SetFontList(const font_list: ustring);
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procedure ApplyTextColor(color: TCefColor; const range: TCefRange);
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procedure ApplyTextStyle(style: TCefTextStyle; add: boolean; const range: TCefRange);
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function IsCommandEnabled(command_id: TCefTextFieldCommands): boolean;
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procedure ExecuteCommand(command_id: TCefTextFieldCommands);
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procedure ClearEditHistory;
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procedure SetAccessibleName(const name_: ustring);
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procedure SetPlaceholderTextColor(color: TCefColor);
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property PasswordInput : boolean read GetIsPasswordInput write SetPasswordInput;
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property ReadOnly : boolean read GetIsReadOnly write SetReadOnly;
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property Text : ustring read GetText write SetText;
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property SelectedText : ustring read GetSelectedText;
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property TextColor : TCefColor read GetTextColor write SetTextColor;
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property SelectionTextColor : TCefColor read GetSelectionTextColor write SetSelectionTextColor;
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property SelectionBackgroundColor : TCefColor read GetSelectionBackgroundColor write SetSelectionBackgroundColor;
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property PlaceholderText : ustring read GetPlaceholderText write SetPlaceholderText;
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property HasSelection : boolean read GetHasSelection;
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published
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property OnTextfieldKeyEvent : TOnTextfieldKeyEventEvent read FOnTextfieldKeyEvent write FOnTextfieldKeyEvent;
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property OnAfterUserAction : TOnAfterUserActionEvent read FOnAfterUserAction write FOnAfterUserAction;
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end;
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{$IFDEF FPC}
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procedure Register;
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{$ENDIF}
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// *********************************************************
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// ********************** ATTENTION ! **********************
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// *********************************************************
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// ** **
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// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
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// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
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// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
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// ** **
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// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
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// ** THE SAME THREAD TO AVOID ERRORS. **
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// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
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// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
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// ** **
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// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
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// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
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// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
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// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
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// ** **
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// ** READ THIS FOR MORE INFORMATION : **
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// ** https://www.briskbard.com/index.php?pageid=cef **
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// ** **
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// ** USE OUR FORUMS FOR MORE QUESTIONS : **
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// ** https://www.briskbard.com/forum/ **
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// ** **
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// *********************************************************
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// *********************************************************
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implementation
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uses
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uCEFTextfieldDelegate, uCEFMiscFunctions, uCEFTask, uCEFTextfield;
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procedure TCEFTextfieldComponent.Initialize;
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begin
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inherited Initialize;
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FTextfield := nil;
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FOnTextfieldKeyEvent := nil;
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FOnAfterUserAction := nil;
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end;
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procedure TCEFTextfieldComponent.DestroyView;
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begin
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FTextfield := nil;
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end;
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procedure TCEFTextfieldComponent.CreateTextField;
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begin
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CreateView;
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end;
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procedure TCEFTextfieldComponent.doOnKeyEvent(const textfield : ICefTextfield;
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const event : TCefKeyEvent;
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var aResult : boolean);
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begin
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if assigned(FOnTextfieldKeyEvent) then
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FOnTextfieldKeyEvent(self, textfield, event, aResult);
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end;
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procedure TCEFTextfieldComponent.doOnAfterUserAction(const textfield: ICefTextfield);
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begin
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if assigned(FOnAfterUserAction) then
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FOnAfterUserAction(self, textfield);
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end;
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procedure TCEFTextfieldComponent.doCreateCustomView;
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var
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TempDelegate : ICefTextfieldDelegate;
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begin
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if (FTextfield = nil) then
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try
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TempDelegate := TCustomTextfieldDelegate.Create(self);
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FTextfield := TCefTextfieldRef.CreateTextField(TempDelegate);
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finally
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TempDelegate := nil;
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end;
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end;
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function TCEFTextfieldComponent.GetInitialized : boolean;
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begin
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Result := (FTextfield <> nil);
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end;
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function TCEFTextfieldComponent.GetAsView : ICefView;
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begin
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Result := FTextfield as ICefView;
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end;
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function TCEFTextfieldComponent.GetAsTextfield : ICefTextfield;
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begin
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Result := FTextfield;
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end;
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function TCEFTextfieldComponent.GetIsPasswordInput : boolean;
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begin
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Result := Initialized and FTextfield.IsPasswordInput;
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end;
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function TCEFTextfieldComponent.GetIsReadOnly : boolean;
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begin
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Result := Initialized and FTextfield.IsReadOnly;
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end;
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function TCEFTextfieldComponent.GetText : ustring;
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begin
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if Initialized then
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Result := FTextfield.GetText
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else
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Result := '';
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end;
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function TCEFTextfieldComponent.GetHasSelection : boolean;
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begin
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Result := Initialized and FTextfield.HasSelection;
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end;
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function TCEFTextfieldComponent.GetSelectedText : ustring;
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begin
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if Initialized then
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Result := FTextfield.SelectedText
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else
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Result := '';
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end;
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function TCEFTextfieldComponent.GetSelectedRange : TCefRange;
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var
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TempRange : TCefRange;
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begin
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if Initialized then
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TempRange := FTextfield.GetSelectedRange
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else
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begin
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TempRange.from := 0;
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TempRange.to_ := 0;
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end;
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Result := TempRange;
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end;
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function TCEFTextfieldComponent.GetCursorPosition : NativeUInt;
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begin
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if Initialized then
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Result := FTextfield.GetCursorPosition
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else
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Result := 0;
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end;
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function TCEFTextfieldComponent.GetTextColor : TCefColor;
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begin
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if Initialized then
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Result := FTextfield.GetTextColor
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else
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Result := 0;
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end;
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function TCEFTextfieldComponent.GetSelectionTextColor : TCefColor;
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begin
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if Initialized then
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Result := FTextfield.GetSelectionTextColor
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else
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Result := 0;
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end;
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function TCEFTextfieldComponent.GetSelectionBackgroundColor : TCefColor;
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begin
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if Initialized then
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Result := FTextfield.GetSelectionBackgroundColor
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else
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Result := 0;
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end;
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function TCEFTextfieldComponent.GetPlaceholderText : ustring;
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begin
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if Initialized then
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Result := FTextfield.GetPlaceholderText
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else
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Result := '';
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end;
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procedure TCEFTextfieldComponent.SetPasswordInput(password_input: boolean);
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begin
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if Initialized then
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FTextfield.SetPasswordInput(password_input);
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end;
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procedure TCEFTextfieldComponent.SetReadOnly(read_only: boolean);
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begin
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if Initialized then
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FTextfield.SetReadOnly(read_only);
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end;
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procedure TCEFTextfieldComponent.SetText(const text_: ustring);
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begin
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if Initialized then
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FTextfield.SetText(text_);
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end;
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procedure TCEFTextfieldComponent.SetTextColor(color: TCefColor);
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begin
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if Initialized then
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FTextfield.SetTextColor(color);
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end;
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procedure TCEFTextfieldComponent.SetSelectionTextColor(color: TCefColor);
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begin
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if Initialized then
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FTextfield.SetSelectionTextColor(color);
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end;
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procedure TCEFTextfieldComponent.SetSelectionBackgroundColor(color: TCefColor);
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begin
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if Initialized then
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FTextfield.SetSelectionBackgroundColor(color);
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end;
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procedure TCEFTextfieldComponent.SetPlaceholderText(const text_: ustring);
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begin
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if Initialized then
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FTextfield.SetPlaceholderText(text_);
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end;
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procedure TCEFTextfieldComponent.AppendText(const text_: ustring);
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begin
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if Initialized then
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FTextfield.AppendText(text_);
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end;
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procedure TCEFTextfieldComponent.InsertOrReplaceText(const text_: ustring);
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begin
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if Initialized then
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FTextfield.InsertOrReplaceText(text_);
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end;
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procedure TCEFTextfieldComponent.SelectAll(reversed: boolean);
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begin
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if Initialized then
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FTextfield.SelectAll(reversed);
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end;
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procedure TCEFTextfieldComponent.ClearSelection;
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begin
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if Initialized then
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FTextfield.ClearSelection;
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end;
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procedure TCEFTextfieldComponent.SelectRange(const range: TCefRange);
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begin
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if Initialized then
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FTextfield.SelectRange(range);
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end;
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procedure TCEFTextfieldComponent.SetFontList(const font_list: ustring);
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begin
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if Initialized then
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FTextfield.SetFontList(font_list);
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end;
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procedure TCEFTextfieldComponent.ApplyTextColor(color: TCefColor; const range: TCefRange);
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begin
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if Initialized then
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FTextfield.ApplyTextColor(color, range);
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end;
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procedure TCEFTextfieldComponent.ApplyTextStyle(style: TCefTextStyle; add: boolean; const range: TCefRange);
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begin
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if Initialized then
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FTextfield.ApplyTextStyle(style, add, range);
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end;
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function TCEFTextfieldComponent.IsCommandEnabled(command_id: TCefTextFieldCommands): boolean;
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begin
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Result := Initialized and FTextfield.IsCommandEnabled(command_id);
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end;
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procedure TCEFTextfieldComponent.ExecuteCommand(command_id: TCefTextFieldCommands);
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begin
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if Initialized then
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FTextfield.ExecuteCommand(command_id);
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end;
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procedure TCEFTextfieldComponent.ClearEditHistory;
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begin
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if Initialized then
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FTextfield.ClearEditHistory;
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end;
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procedure TCEFTextfieldComponent.SetAccessibleName(const name_: ustring);
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begin
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if Initialized then
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FTextfield.SetAccessibleName(name_);
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end;
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procedure TCEFTextfieldComponent.SetPlaceholderTextColor(color: TCefColor);
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begin
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if Initialized then
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FTextfield.SetPlaceholderTextColor(color);
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end;
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{$IFDEF FPC}
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procedure Register;
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begin
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{$I res/tceftextfieldcomponent.lrs}
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RegisterComponents('Chromium Views Framework', [TCEFTextfieldComponent]);
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end;
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{$ENDIF}
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end.
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