mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-15 07:45:56 +01:00
340 lines
11 KiB
ObjectPascal
340 lines
11 KiB
ObjectPascal
unit uCEFButtonDelegate;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$I cef.inc}
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{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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interface
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uses
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{$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}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFViewDelegate;
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type
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TCefButtonDelegateRef = class(TCefViewDelegateRef, ICefButtonDelegate)
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protected
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procedure OnButtonPressed(const button: ICefButton);
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procedure OnButtonStateChanged(const button: ICefButton);
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public
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/// <summary>
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/// Returns a ICefButtonDelegate instance using a PCefButtonDelegate data pointer.
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/// </summary>
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class function UnWrap(data: Pointer): ICefButtonDelegate;
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end;
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/// <summary>
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/// Implement this interface to handle Button events. The functions of this
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/// interface will be called on the browser process UI thread unless otherwise
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/// indicated.
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/// </summary>
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/// <remarks>
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/// <para><see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_button_delegate_capi.h">CEF source file: /include/capi/views/cef_button_delegate_capi.h (cef_button_delegate_t)</see></para>
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/// </remarks>
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TCefButtonDelegateOwn = class(TCefViewDelegateOwn, ICefButtonDelegate)
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protected
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/// <summary>
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/// Called when |button| is pressed.
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/// </summary>
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procedure OnButtonPressed(const button: ICefButton); virtual;
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/// <summary>
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/// Called when the state of |button| changes.
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/// </summary>
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procedure OnButtonStateChanged(const button: ICefButton); virtual;
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/// <summary>
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/// Links the methods in the internal CEF record data pointer with the methods in this class.
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/// </summary>
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procedure InitializeCEFMethods; override;
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public
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constructor Create; override;
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end;
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/// <summary>
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/// This class handles all the ICefButtonDelegate methods which call the ICefButtonDelegateEvents methods.
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/// ICefButtonDelegateEvents will be implemented by the control receiving the ICefButtonDelegate events.
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/// </summary>
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TCustomButtonDelegate = class(TCefButtonDelegateOwn)
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protected
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FEvents : Pointer;
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// ICefViewDelegate
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procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer); override;
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procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView); override;
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procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView); override;
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procedure OnWindowChanged(const view: ICefView; added: boolean); override;
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procedure OnLayoutChanged(const view: ICefView; new_bounds: TCefRect); override;
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procedure OnFocus(const view: ICefView); override;
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procedure OnBlur(const view: ICefView); override;
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procedure OnThemeChanged(const view: ICefView); override;
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// ICefButtonDelegate
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procedure OnButtonPressed(const button: ICefButton); override;
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procedure OnButtonStateChanged(const button: ICefButton); override;
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public
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/// <summary>
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/// Creates an instance of this class liked to an interface that's implemented by a control receiving the events.
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/// </summary>
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constructor Create(const events: ICefButtonDelegateEvents); reintroduce;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFMiscFunctions, uCEFButton;
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// **************************************************************
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// ****************** TCefButtonDelegateRef *********************
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// **************************************************************
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procedure TCefButtonDelegateRef.OnButtonPressed(const button: ICefButton);
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begin
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PCefButtonDelegate(FData)^.on_button_pressed(PCefButtonDelegate(FData),
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CefGetData(button));
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end;
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procedure TCefButtonDelegateRef.OnButtonStateChanged(const button: ICefButton);
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begin
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PCefButtonDelegate(FData)^.on_button_state_changed(PCefButtonDelegate(FData),
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CefGetData(button));
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end;
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class function TCefButtonDelegateRef.UnWrap(data: Pointer): ICefButtonDelegate;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefButtonDelegate
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else
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Result := nil;
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end;
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// **************************************************************
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// ****************** TCefButtonDelegateOwn *********************
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// **************************************************************
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procedure cef_button_delegate_on_button_pressed(self: PCefButtonDelegate; button: PCefButton); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefButtonDelegateOwn) then
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TCefButtonDelegateOwn(TempObject).OnButtonPressed(TCefButtonRef.UnWrap(button));
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end;
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procedure cef_button_delegate_on_button_state_changed(self: PCefButtonDelegate; button: PCefButton); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefButtonDelegateOwn) then
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TCefButtonDelegateOwn(TempObject).OnButtonStateChanged(TCefButtonRef.UnWrap(button));
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end;
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constructor TCefButtonDelegateOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefButtonDelegate));
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InitializeCEFMethods;
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end;
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procedure TCefButtonDelegateOwn.InitializeCEFMethods;
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begin
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inherited InitializeCEFMethods;
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with PCefButtonDelegate(FData)^ do
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begin
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on_button_pressed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_pressed;
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on_button_state_changed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_state_changed;
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end;
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end;
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procedure TCefButtonDelegateOwn.OnButtonPressed(const button: ICefButton);
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begin
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//
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end;
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procedure TCefButtonDelegateOwn.OnButtonStateChanged(const button: ICefButton);
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begin
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//
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end;
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// **************************************************************
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// ****************** TCustomButtonDelegate *********************
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// **************************************************************
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constructor TCustomButtonDelegate.Create(const events: ICefButtonDelegateEvents);
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begin
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inherited Create;
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FEvents := Pointer(events);
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end;
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procedure TCustomButtonDelegate.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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begin
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inherited OnGetPreferredSize(view, aResult);
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetPreferredSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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begin
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inherited OnGetMinimumSize(view, aResult);
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetMinimumSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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begin
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inherited OnGetMaximumSize(view, aResult);
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetMaximumSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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begin
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inherited OnGetHeightForWidth(view, width, aResult);
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetHeightForWidth', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnParentViewChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnChildViewChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnWindowChanged(const view: ICefView; added: boolean);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnWindowChanged(view, added);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnWindowChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnLayoutChanged(const view: ICefView; new_bounds: TCefRect);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnLayoutChanged(view, new_bounds);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnLayoutChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnFocus(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnFocus(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnFocus', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnBlur(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnBlur(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnBlur', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnThemeChanged(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnThemeChanged(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnThemeChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnButtonPressed(const button: ICefButton);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnButtonPressed(button);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnButtonPressed', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnButtonStateChanged(const button: ICefButton);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnButtonStateChanged(button);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnButtonStateChanged', e) then raise;
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end;
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end;
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end.
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