{----------------------------------------------------------------------------- The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/MPL-1.1.html Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for the specific language governing rights and limitations under the License. The Original Code is: JvDatePickerEdit, released on 2002-10-04. The Initial Developer of the Original Code is Oliver Giesen [giesen att lucatec dott de] Portions created by Oliver Giesen are Copyright (C) 2002 Lucatec GmbH. All Rights Reserved. Contributor(s): Peter Thörnqvist. You may retrieve the latest version of this file at the Project JEDI's JVCL home page, located at http://jvcl.sourceforge.net Description: A replacement for TDateTimePicker which is better suited for keyboard-input by ultimately descending from TCustomMaskEdit. Other notable features (especially in comparison to the native DATETIMEPICKER): - The control is able to construct a suitable EditMask from a valid date format string such as the global ShortDateFormat (the default) which should make it adapt well to regional settings / individual requirements. - It is possible to specify a NoDateText which will be displayed when no date is selected. The original datetimepicker would display 1899-12-31 in such cases. This feature could be further controlled by the AllowNoDate and NoDateShortcut properties. Known issues / not (yet) implemented features: - there is no real support for DateFormats containing any literal characters other than the defined DateSeparator, especially spaces. it /might/ work in some cases but in the majority of cases it will not. TODO: simply disallow such characters or implement proper handling? - as the embedded MS-calendar does not support dates prior to 1752-09-14, neither does this control. this is not yet handled gracefully in absolutely all situations though. - the Min/MaxYear contstraints are currently commented out as they are not functional in the current state. They would still require some work to make up for two-digit year entries. - the control does (currently) not allow for time entry - it really is a control for date entry only. -----------------------------------------------------------------------------} // $Id: JvDatePickerEdit.pas,v 1.68 2006/01/11 20:18:44 jfudickar Exp $ unit JvDatePickerEdit; {$I jvcl.inc} interface uses {$IFDEF UNITVERSIONING} JclUnitVersioning, {$ENDIF UNITVERSIONING} Windows, Messages, Classes, Controls, ImgList, JvCalendar, JvDropDownForm, JvCheckedMaskEdit, JvToolEdit; type {Types used to handle and convert between date format strings and EditMasks:} TJvDateFigure = (dfNone, dfYear, dfMonth, dfDay); TJvDateFigureInfo = record Figure: TJvDateFigure; Start: Byte; Length: Byte; Index: Byte; end; TJvDateFigures = array[ 0..2] of TJvDateFigureInfo; {A dropdown form with an embedded calendar control.} TJvDropCalendar = class(TJvCustomDropDownForm) private FCal: TJvCustomMonthCalendar; FWithBeep: Boolean; FOnChange: TNotifyEvent; FOnSelect: TNotifyEvent; FOnCancel: TNotifyEvent; procedure CalSelChange(Sender: TObject; StartDate, EndDate: TDateTime); procedure CalSelect(Sender: TObject; StartDate, EndDate: TDateTime); procedure CalKeyPress(Sender: TObject; var Key: Char); procedure CalKillFocus(const ASender: TObject; const ANextControl: TWinControl); protected procedure DoCancel; procedure DoChange; procedure DoSelect; procedure DoShow; override; function GetSelDate: TDateTime; procedure SetSelDate(const AValue: TDateTime); public constructor CreateWithAppearance(AOwner: TComponent; const AAppearance: TJvMonthCalAppearance); destructor Destroy; override; procedure SetFocus; override; property SelDate: TDateTime read GetSelDate write SetSelDate; property WithBeep: Boolean read FWithBeep write FWithBeep; property OnCancel: TNotifyEvent read FOnCancel write FOnCancel; property OnChange: TNotifyEvent read FOnChange write FOnChange; property OnSelect: TNotifyEvent read FOnSelect write FOnSelect; end; TJvCustomDatePickerEdit = class(TJvCustomCheckedMaskEdit) private FAllowNoDate: Boolean; FCalAppearance: TJvMonthCalAppearance; FDate: TDateTime; FDateError: Boolean; FDeleting: Boolean; FDateFigures: TJvDateFigures; FInternalDateFormat, FDateFormat: string; FEnableValidation: Boolean; FMask: string; FNoDateShortcut: TShortcut; FNoDateText: string; FStoreDate: Boolean; FAlwaysReturnEditDate: Boolean; FEmptyMaskText: string; FStoreDateFormat: Boolean; FDateSeparator: Char; // FMinYear: Word; // FMaxYear: Word; procedure CalChange(Sender: TObject); procedure CalDestroy(Sender: TObject); procedure CalSelect(Sender: TObject); procedure CalCloseQuery(Sender: TObject; var CanClose: Boolean); function AttemptTextToDate(const AText: string; var ADate: TDateTime; const AForce: Boolean = False; const ARaise: Boolean = False): Boolean; function DateFormatToEditMask(var ADateFormat: string): string; function DateToText(const ADate: TDateTime): string; function DetermineDateSeparator(AFormat: string): Char; procedure ResetDateFormat; procedure FindSeparators(var AFigures: TJvDateFigures; const AText: string; const AGetLengths: Boolean = True); procedure ParseFigures(var AFigures: TJvDateFigures; AFormat: string; const AMask: string); procedure RaiseNoDate; procedure SetAllowNoDate(const AValue: Boolean); procedure SetCalAppearance(const AValue: TJvMonthCalAppearance); function GetDate: TDateTime; procedure SetDate(const AValue: TDateTime); procedure SetDateFormat(const AValue: string); function GetDropped: Boolean; procedure SetNoDateText(const AValue: string); procedure SetDateSeparator(const AValue: Char); function GetEditMask: string; procedure SetEditMask(const AValue: string); function GetText: TCaption; procedure SetText(const AValue: TCaption); procedure WMPaste(var Msg: TMessage); message WM_PASTE; protected procedure AcceptValue(const Value: Variant); override; function IsNoDateShortcutStored: Boolean; function IsNoDateTextStored: Boolean; procedure PopupChange; override; procedure Change; override; procedure Loaded; override; procedure CreateWnd; override; procedure DoKillFocus(const ANextControl: TWinControl); override; procedure KeyDown(var Key: Word; Shift: TShiftState); override; procedure KeyPress(var Key: Char); override; procedure CreatePopup; override; procedure HidePopup; override; procedure ShowPopup(Origin: TPoint); override; procedure DoCtl3DChanged; override; procedure EnabledChanged; override; function GetChecked: Boolean; override; function GetPopupValue: Variant; override; procedure SetChecked(const AValue: Boolean); override; procedure SetPopupValue(const Value: Variant); override; procedure SetShowCheckbox(const AValue: Boolean); override; function GetEnableValidation: Boolean; virtual; procedure UpdateDisplay; virtual; function ValidateDate(const ADate: TDateTime): Boolean; virtual; function ActiveFigure: TJvDateFigureInfo; procedure ClearMask; procedure RestoreMask; function IsEmptyMaskText(const AText: string): Boolean; property AllowNoDate: Boolean read FAllowNoDate write SetAllowNoDate; property AlwaysReturnEditDate: Boolean read FAlwaysReturnEditDate write FAlwaysReturnEditDate default True; property CalendarAppearance: TJvMonthCalAppearance read FCalAppearance write SetCalAppearance; property Date: TDateTime read GetDate write SetDate stored FStoreDate; property DateFormat: string read FDateFormat write SetDateFormat stored FStoreDateFormat; property DateSeparator: Char read FDateSeparator write SetDateSeparator stored FStoreDateFormat; property Dropped: Boolean read GetDropped; property EnableValidation: Boolean read GetEnableValidation write FEnableValidation default True; property ImageKind default ikDropDown; // property MaxYear: Word read FMaxYear write FMaxYear; // property MinYear: Word read FMinYear write FMinYear; property NoDateShortcut: TShortcut read FNoDateShortcut write FNoDateShortcut stored IsNoDateShortcutStored; property NoDateText: string read FNoDateText write SetNoDateText stored IsNoDateTextStored; property ShowButton default True; property StoreDate: Boolean read FStoreDate write FStoreDate default False; property StoreDateFormat: Boolean read FStoreDateFormat write FStoreDateFormat default False; public constructor Create(AOwner: TComponent); override; destructor Destroy; override; class function DefaultImageIndex: TImageIndex; override; procedure Clear; override; function IsEmpty: Boolean; virtual; function HasValidDate: Boolean; property EditMask: string read GetEditMask write SetEditMask; property Text: TCaption read GetText write SetText; end; TJvDatePickerEdit = class(TJvCustomDatePickerEdit) public property Dropped; published property Action; property Align; property AllowNoDate; property AlwaysReturnEditDate; property Anchors; property AutoSelect; property AutoSize; property BorderStyle; property ButtonFlat; property ButtonHint; property ButtonWidth; property CalendarAppearance; property Caret; property CharCase; property Checked; property ClickKey; property ClipboardCommands; property Color; property Constraints; property Date; property DateFormat; property DateSeparator; {$IFDEF VCL} {property BiDiMode;} {property ParentBiDiMode;} property Flat; property ImeMode; property ImeName; property OEMConvert; property ParentCtl3D; property OnEndDock; property OnStartDock; {$ENDIF VCL} property DirectInput; property DisabledColor; property DisabledTextColor; property DragCursor; property DragKind; property DragMode; property Enabled; property EnableValidation; property Font; property Glyph; property GroupIndex; property HideSelection; property HintColor; property HotTrack; // property MaxYear default 2900; // property MinYear default 1900; property ImageIndex; property ImageKind; property Images; property NoDateShortcut; property NoDateText; property NumGlyphs; property ParentColor; property ParentFont; property ParentShowHint; property PopupMenu; property ReadOnly; property ShowCheckBox; property ShowHint; property ShowButton; property StoreDate; property StoreDateFormat; property TabOrder; property TabStop; property Visible; property OnButtonClick; property OnChange; property OnClick; property OnCheckClick; property OnContextPopup; property OnDblClick; property OnDragDrop; property OnDragOver; property OnEnabledChanged; property OnEndDrag; property OnEnter; property OnExit; property OnKeyDown; property OnKeyPress; property OnKeyUp; property OnKillFocus; property OnMouseDown; property OnMouseEnter; property OnMouseLeave; property OnMouseMove; property OnMouseUp; property OnParentColorChange; property OnSetFocus; property OnStartDrag; end; {$IFDEF UNITVERSIONING} const UnitVersioning: TUnitVersionInfo = ( RCSfile: '$RCSfile: JvDatePickerEdit.pas,v $'; Revision: '$Revision: 1.68 $'; Date: '$Date: 2006/01/11 20:18:44 $'; LogPath: 'JVCL\run' ); {$ENDIF UNITVERSIONING} implementation uses {$IFDEF HAS_UNIT_VARIANTS} Variants, {$ENDIF HAS_UNIT_VARIANTS} SysUtils, Menus, JclStrings, JvVcl5Utils, // StrToXxxDef JvConsts, JvTypes, JvResources; const DateMaskSuffix = '!;1;_'; //=== { TJvCustomDatePickerEdit } ============================================ procedure TJvCustomDatePickerEdit.AcceptValue(const Value: Variant); var TextBefore: string; TmpDate: TDateTime; TmpValue: Variant; OldFormat: string; OldSeparator: Char; begin TextBefore := Text; // Mantis 3056: If the date format is not the system's default, the value // displayed in the text box after having selected a date in the popup // will be 30.12.1899. This is because the variant will be converted to a // string using ShortDateFormat. So we change it here, to ensure it is // the one for the control. We also have to do the cast to a string // ourselves because VarToStr (called in TJvCustomComboEdit) ignores the // ShortDateFormat variable. // And we only call the inherited method this way if the variant is a // date, or we would risk an exception trying to convert something to a // date when it is not. if VarIsType(Value, varDate) then begin OldFormat := ShortDateFormat; OldSeparator := SysUtils.DateSeparator; try ShortDateFormat := FInternalDateFormat; SysUtils.DateSeparator := FDateSeparator; TmpDate := Value; TmpValue := DateToStr(TmpDate); inherited AcceptValue(TmpValue); finally ShortDateFormat := OldFormat; SysUtils.DateSeparator := OldSeparator; end; end else inherited AcceptValue(TmpValue); // Inherited AcceptValue will change the base class Text property, thus not // calling our SetText method. As a result, we must set the date in this case if Text <> TextBefore then begin AttemptTextToDate(Text, TmpDate, False); Self.Date := TmpDate; end; end; function TJvCustomDatePickerEdit.ActiveFigure: TJvDateFigureInfo; var I: Integer; begin for I := 2 downto 0 do { SelStart is 0-based, FDateFigures[I].Start is 1-based } if SelStart + 1 >= FDateFigures[I].Start then begin Result := FDateFigures[I]; Exit; end; Result.Figure := dfNone; end; function TJvCustomDatePickerEdit.AttemptTextToDate(const AText: string; var ADate: TDateTime; const AForce: Boolean; const ARaise: Boolean): Boolean; var OldFormat: string; OldSeparator: Char; OldDate: TDateTime; Dummy: Integer; begin {only attempt to convert, if at least the Mask is matched - otherwise we'd be swamped by exceptions during input} if AForce or Validate(AText, Dummy) then begin OldDate := ADate; OldFormat := ShortDateFormat; OldSeparator := SysUtils.DateSeparator; try SysUtils.DateSeparator := FDateSeparator; ShortDateFormat := FInternalDateFormat; try if AllowNoDate and IsEmptyMaskText(AText) then ADate := 0.0 else ADate := StrToDate(StrRemoveChars(AText, [' '])); Result := True; except Result := False; if (ARaise) then raise else ADate := OldDate; end; finally SysUtils.DateSeparator := OldSeparator; ShortDateFormat := OldFormat; end; end else Result := False; end; procedure TJvCustomDatePickerEdit.CalChange(Sender: TObject); begin if FPopup is TJvDropCalendar then //Text := DateToText(TJvDropCalendar(FPopup).SelDate); Date := TJvDropCalendar(FPopup).SelDate; end; procedure TJvCustomDatePickerEdit.CalCloseQuery(Sender: TObject; var CanClose: Boolean); var P: TPoint; begin {If we would let the calendar close itself while clicking the button, the DropButtonClick method would simply reopen it again as it would find the calendar closed.} GetCursorPos(P); CanClose := not PtInRect(Button.BoundsRect, Button.ScreenToClient(P)); end; procedure TJvCustomDatePickerEdit.CalDestroy(Sender: TObject); begin PopupCloseUp(Self, False); end; procedure TJvCustomDatePickerEdit.CalSelect(Sender: TObject); begin PopupCloseUp(Self, True); end; procedure TJvCustomDatePickerEdit.Change; var lDate: TDateTime; lFigVal: Word; lActFig: TJvDateFigureInfo; procedure SetActiveFigVal(const AValue: Word); begin BeginInternalChange; try SelStart := lActFig.Start - 1; SelLength := lActFig.Length; SelText := Format('%.*d', [lActFig.Length, AValue]); finally EndInternalChange; end; end; procedure EnforceRange(const AMin, AMax: Word); begin if lFigVal > AMax then SetActiveFigVal(AMax) else if lFigVal < AMin then SetActiveFigVal(AMin); end; begin if InternalChanging then Exit; FDateError := False; if [csDesigning, csDestroying] * ComponentState <> [] then Exit; if (Text <> NoDateText) and (Text <> '') then begin lDate := Self.Date; if AttemptTextToDate(Text, lDate) then begin BeginInternalChange; try Self.Date := lDate; finally EndInternalChange; end; end else if (not FDeleting) and EnableValidation then begin lActFig := ActiveFigure; if lActFig.Figure <> dfNone then begin lFigVal := StrToIntDef(Trim(Copy(Text, lActFig.Start, lActFig.Length)), 0); //only enforce range if the cursor is at the end of the current figure: if SelStart = lActFig.Start + lActFig.Length - 1 then case lActFig.Figure of dfDay: EnforceRange(1, 31); dfMonth: EnforceRange(1, 12); dfYear: {EnforceRange( MinYear, MaxYear)}; //year-validation still under development end; end; {make sure querying the date in an OnChange event handler always reflects the current contents of the control and not just the last valid value.} lDate := 0; AttemptTextToDate(Text, lDate, lActFig.Index = High(TJvDateFigures)); if AlwaysReturnEditDate then FDate := lDate; end; end; inherited Change; end; procedure TJvCustomDatePickerEdit.Clear; begin Checked := False; end; procedure TJvCustomDatePickerEdit.ClearMask; begin if EditMask <> '' then begin FMask := EditMask; if not (csDesigning in ComponentState) then EditMask := ''; end; end; constructor TJvCustomDatePickerEdit.Create(AOwner: TComponent); begin inherited Create(AOwner); FAllowNoDate := True; FAlwaysReturnEditDate := True; FDate := SysUtils.Date; FDateError := False; FDeleting := False; FEnableValidation := True; // FMaxYear := 2900; // FMinYear := 1800; FNoDateShortcut := TextToShortCut(RsDefaultNoDateShortcut); FNoDateText := ''; FStoreDate := False; FStoreDateFormat := False; FCalAppearance := TJvMonthCalAppearance.Create; ControlState := ControlState + [csCreating]; try ImageKind := ikDropDown; { force update } ShowButton := True; finally ControlState := ControlState - [csCreating]; end; end; procedure TJvCustomDatePickerEdit.CreatePopup; begin if not Assigned(FPopup) then begin FPopup := TJvDropCalendar.CreateWithAppearance(Self, FCalAppearance); with TJvDropCalendar(FPopup) do begin // SelDate := Self.Date; OnChange := Self.CalChange; OnSelect := Self.CalSelect; OnDestroy := Self.CalDestroy; OnCloseQuery := Self.CalCloseQuery; // OnKillFocus := Self.CalKillFocus; // Show; // SetFocus; end; end; end; procedure TJvCustomDatePickerEdit.CreateWnd; begin inherited CreateWnd; // obones: changed to DateFormat instead of ShortDateFormat, it was // preventing any date format different from the system's value to be // set at design time SetDateFormat(DateFormat); end; function TJvCustomDatePickerEdit.DateFormatToEditMask( var ADateFormat: string): string; begin StrReplace(ADateFormat, 'dddddd', LongDateFormat, []); StrReplace(ADateFormat, 'ddddd', ShortDateFormat, []); StrReplace(ADateFormat, 'dddd', '', []); // unsupported: DoW as full name StrReplace(ADateFormat, 'ddd', '', []); // unsupported: DoW as abbrev StrReplace(ADateFormat, 'MMMM', 'MM', []); StrReplace(ADateFormat, 'MMM', 'M', []); Result := ADateFormat; StrReplace(Result, 'dd', '00', []); StrReplace(Result, 'd', '99', []); StrReplace(Result, 'MM', '00', []); StrReplace(Result, 'M', '99', []); StrReplace(Result, 'yyyy', '0099', []); StrReplace(Result, 'yy', '00', []); StrReplace(Result, ' ', '_', []); Result := Trim(Result) + DateMaskSuffix; end; function TJvCustomDatePickerEdit.DateToText(const ADate: TDateTime): string; var OldSep: Char; begin OldSep := SysUtils.DateSeparator; // without this a slash would always be converted to SysUtils.DateSeparator SysUtils.DateSeparator := Self.DateSeparator; try Result := FormatDateTime(FInternalDateFormat, ADate); finally SysUtils.DateSeparator := OldSep; end; end; class function TJvCustomDatePickerEdit.DefaultImageIndex: TImageIndex; begin Result := TJvDateEdit.DefaultImageIndex; end; destructor TJvCustomDatePickerEdit.Destroy; begin FreeAndNil(FCalAppearance); inherited Destroy; end; function TJvCustomDatePickerEdit.DetermineDateSeparator(AFormat: string): Char; begin AFormat := StrRemoveChars(Trim(AFormat), ['d', 'M', 'y']); if Length(AFormat) > 0 then Result := AFormat[1] else Result := SysUtils.DateSeparator; end; procedure TJvCustomDatePickerEdit.DoCtl3DChanged; begin inherited DoCtl3DChanged; { (rb) Conflicts with ButtonFlat property } Button.Flat := not Self.Ctl3D; end; procedure TJvCustomDatePickerEdit.DoKillFocus(const ANextControl: TWinControl); var lDate: TDateTime; begin if (ANextControl = nil) or ((ANextControl <> FPopup) and (ANextControl.Owner <> FPopup)) then if not FDateError then begin PopupCloseUp(Self, False); inherited DoKillFocus(ANextControl); if EnableValidation then try lDate := Self.Date; if (Text <> NoDateText) and AttemptTextToDate(Text, lDate, True, True) then Self.Date := lDate; except on EConvertError do if not (csDestroying in ComponentState) then begin FDateError := True; SetFocus; raise; end else Self.Date := 0; end; end else inherited DoKillFocus(ANextControl); end; //procedure TJvCustomDatePickerEdit.DropButtonClick(Sender: TObject); //begin // if Dropped then // CloseUp // else // DropDown; //end; //procedure TJvCustomDatePickerEdit.DropDown; //begin // if not Dropped then // begin // if IsEmpty then // Self.Date := SysUtils.Date; // // FDropFo := TJvDropCalendar.CreateWithAppearance(Self, FCalAppearance); // with FDropFo do // begin // SelDate := Self.Date; // OnChange := Self.CalChange; // OnSelect := Self.CalSelect; // OnDestroy := Self.CalDestroy; // OnCloseQuery := Self.CalCloseQuery; // OnKillFocus := Self.CalKillFocus; // Show; // SetFocus; // end; // end; //end; procedure TJvCustomDatePickerEdit.EnabledChanged; begin inherited EnabledChanged; if not (Self.Enabled) and Dropped then PopupCloseUp(Self, False); end; procedure TJvCustomDatePickerEdit.FindSeparators(var AFigures: TJvDateFigures; const AText: string; const AGetLengths: Boolean); begin //TODO 3 : make up for escaped characters in EditMask AFigures[0].Start := 1; AFigures[1].Start := Pos(DateSeparator, AText) + 1; AFigures[2].Start := StrLastPos(DateSeparator, AText) + 1; if AGetLengths then begin AFigures[0].Length := AFigures[1].Start - 2; AFigures[1].Length := AFigures[2].Start - AFigures[1].Start - 1; AFigures[2].Length := Length(AText) - AFigures[2].Start + 1; end; end; function TJvCustomDatePickerEdit.GetChecked: Boolean; begin Result := not IsEmpty; end; function TJvCustomDatePickerEdit.GetDate: TDateTime; begin Result := FDate; end; function TJvCustomDatePickerEdit.GetDropped: Boolean; begin //Result := Assigned(FDropFo) and not (csDestroying in FDropFo.ComponentState); Result := PopupVisible; end; function TJvCustomDatePickerEdit.GetEditMask: string; begin Result := inherited EditMask; end; function TJvCustomDatePickerEdit.GetEnableValidation: Boolean; begin Result := FEnableValidation; end; function TJvCustomDatePickerEdit.GetPopupValue: Variant; begin if FPopup is TJvDropCalendar then Result := TJvDropCalendar(FPopup).SelDate; end; function TJvCustomDatePickerEdit.GetText: TCaption; var OldSep: Char; begin OldSep := SysUtils.DateSeparator; SysUtils.DateSeparator := Self.DateSeparator; try Result := inherited Text; finally SysUtils.DateSeparator := OldSep; end; end; function TJvCustomDatePickerEdit.HasValidDate: Boolean; var TmpDate: TDateTime; begin Result := AttemptTextToDate(Text, TmpDate, False, False); end; procedure TJvCustomDatePickerEdit.HidePopup; begin // inherited; if FPopup is TJvDropCalendar then begin TJvDropCalendar(FPopup).Hide; if Assigned(OnPopupHidden) then OnPopupHidden(Self); end; end; function TJvCustomDatePickerEdit.IsEmpty: Boolean; begin Result := (FDate = 0); end; function TJvCustomDatePickerEdit.IsEmptyMaskText(const AText: string): Boolean; begin Result := AnsiSameStr(AText, FEmptyMaskText); end; function TJvCustomDatePickerEdit.IsNoDateShortcutStored: Boolean; begin Result := (NoDateShortcut <> TextToShortCut(RsDefaultNoDateShortcut)); end; function TJvCustomDatePickerEdit.IsNoDateTextStored: Boolean; begin Result := (NoDateText <> ''); end; procedure TJvCustomDatePickerEdit.KeyDown(var Key: Word; Shift: TShiftState); var // Indicates whether FDeleting is set here from False to True. DeleteSetHere: Boolean; begin DeleteSetHere := False; if Text = NoDateText then begin Text := ''; RestoreMask; end; if AllowNoDate and (ShortCut(Key, Shift) = NoDateShortcut) then Date := 0 else if Shift * KeyboardShiftStates = [] then case Key of // VK_ESCAPE: // begin // CloseUp; // Reset; // end; // VK_DOWN: // if AShift = [ssAlt] then // DropDown; VK_BACK, VK_CLEAR, VK_DELETE, VK_EREOF, VK_OEM_CLEAR: begin DeleteSetHere := not FDeleting; FDeleting := True; end; end; inherited KeyDown(Key, Shift); FDeleting := FDeleting and not DeleteSetHere; end; procedure TJvCustomDatePickerEdit.KeyPress(var Key: Char); var OldSep: Char; begin { this makes the transition easier for users used to non-mask-aware edit controls as they could continue typing the separator character without the cursor auto-advancing to the next figure when they don't expect it : } if (Key = Self.DateSeparator) and (Text[SelStart] = Self.DateSeparator) then begin Key := #0; Exit; end; OldSep := SysUtils.DateSeparator; SysUtils.DateSeparator := Self.DateSeparator; try inherited KeyPress(Key); finally SysUtils.DateSeparator := OldSep; end; end; procedure TJvCustomDatePickerEdit.Loaded; begin inherited Loaded; UpdateDisplay; end; procedure TJvCustomDatePickerEdit.ParseFigures(var AFigures: TJvDateFigures; AFormat: string; const AMask: string); var I: Integer; DummyFigures: TJvDateFigures; begin {Determine the position of the individual figures in the mask string.} FindSeparators(AFigures, AMask); AFigures[2].Length := AFigures[2].Length - Length(DateMaskSuffix); AFormat := UpperCase(AFormat); {Determine the order of the individual figures in the format string.} FindSeparators(DummyFigures, AFormat, False); for I := 0 to 2 do begin case AFormat[DummyFigures[I].Start] of 'D': AFigures[I].Figure := dfDay; 'M': AFigures[I].Figure := dfMonth; 'Y': AFigures[I].Figure := dfYear; end; AFigures[I].Index := I; end; end; procedure TJvCustomDatePickerEdit.PopupChange; begin inherited PopupChange; DoChange; end; procedure TJvCustomDatePickerEdit.RaiseNoDate; begin raise EJVCLException.CreateResFmt(@RsEMustHaveADate, [Name]); end; procedure TJvCustomDatePickerEdit.ResetDateFormat; begin FInternalDateFormat := FDateFormat; FMask := DateFormatToEditMask(FInternalDateFormat); ParseFigures(FDateFigures, FInternalDateFormat, FMask); BeginInternalChange; try EditMask := ''; Text := ''; EditMask := FMask; FEmptyMaskText := Text; finally EndInternalChange; end; UpdateDisplay; end; procedure TJvCustomDatePickerEdit.RestoreMask; begin if EditMask = '' then EditMask := FMask; end; procedure TJvCustomDatePickerEdit.SetAllowNoDate(const AValue: Boolean); begin if AllowNoDate <> AValue then begin FAllowNoDate := AValue; if AValue and IsEmpty then if csDesigning in ComponentState then Self.Date := SysUtils.Date else RaiseNoDate; if not AValue then ShowCheckBox := False; end; end; procedure TJvCustomDatePickerEdit.SetCalAppearance( const AValue: TJvMonthCalAppearance); begin FCalAppearance.Assign(AValue); end; procedure TJvCustomDatePickerEdit.SetChecked(const AValue: Boolean); begin inherited SetChecked(AValue); if Checked <> AValue then begin if AValue then begin if Self.Date = 0 then Self.Date := SysUtils.Date; end else begin Self.Date := 0; end; Change; end; end; procedure TJvCustomDatePickerEdit.SetDate(const AValue: TDateTime); begin if (FDate <> AValue) and ValidateDate(AValue) then begin FDate := AValue; if AValue <> 0 then Checked := True; DoChange; end; UpdateDisplay; end; procedure TJvCustomDatePickerEdit.SetDateFormat(const AValue: string); begin FDateFormat := AValue; if FDateFormat = '' then FDateFormat := ShortDateFormat; DateSeparator := DetermineDateSeparator(FDateFormat); //calls ResetDateFormat implicitly if FDateFormat <> ShortDateFormat then FStoreDateFormat := True; end; procedure TJvCustomDatePickerEdit.SetDateSeparator(const AValue: Char); begin FDateSeparator := AValue; ResetDateFormat; end; { The only purpose of the following overrides is to overcome a known issue in Mask.pas where it is impossible to use the slash character in an EditMask if SysUtils.DateSeparator is set to something else even if the slash was escaped as a literal. By inheritance the following methods all end up eventually in Mask.MaskIntlLiteralToChar which performs the unwanted conversion. By temporarily setting SysUtils.DateSeparator we could circumvent this. } procedure TJvCustomDatePickerEdit.SetEditMask(const AValue: string); var OldSep: Char; begin OldSep := SysUtils.DateSeparator; SysUtils.DateSeparator := Self.DateSeparator; try inherited EditMask := AValue; finally SysUtils.DateSeparator := OldSep; end; end; procedure TJvCustomDatePickerEdit.SetNoDateText(const AValue: string); begin FNoDateText := AValue; UpdateDisplay; end; procedure TJvCustomDatePickerEdit.SetPopupValue(const Value: Variant); begin if FPopup is TJvDropCalendar then TJvDropCalendar(FPopup).SelDate := StrToDateDef(VarToStr(Value), SysUtils.Date); end; procedure TJvCustomDatePickerEdit.SetShowCheckbox(const AValue: Boolean); begin inherited SetShowCheckbox(AValue); if AValue then AllowNoDate := True; UpdateDisplay; end; procedure TJvCustomDatePickerEdit.SetText(const AValue: TCaption); var OldSep: Char; begin OldSep := SysUtils.DateSeparator; SysUtils.DateSeparator := Self.DateSeparator; try inherited Text := AValue; finally SysUtils.DateSeparator := OldSep; end; end; procedure TJvCustomDatePickerEdit.ShowPopup(Origin: TPoint); begin if FPopup is TJvDropCalendar then begin TJvDropCalendar(FPopup).Show; end; end; procedure TJvCustomDatePickerEdit.UpdateDisplay; begin if InternalChanging or (csLoading in ComponentState) then Exit; // (obones): We need a valid handle here, because setting the text // will read the value of DateSeparator. This value is #0 until the // CreateWnd method is called. // If we don't do that, setting any property that changes the display // (like checked) just after having created the control at runtime // would trigger an "Invalid date" exception because the date, month // and day would not be separated at all. // Doing this means that a parent is required for the change to work. HandleNeeded; BeginInternalChange; try inherited SetChecked(not IsEmpty); if IsEmpty then begin if not (csDesigning in ComponentState) then begin ClearMask; Text := NoDateText; end; end else begin RestoreMask; Text := DateToText(Self.Date) end; finally EndInternalChange; end; end; function TJvCustomDatePickerEdit.ValidateDate(const ADate: TDateTime): Boolean; begin if (not AllowNoDate) and (ADate = 0) then RaiseNoDate; if (ADate < EncodeDate(1752, 09, 14)) or ((ADate > EncodeDate(1752, 09, 19)) and (ADate < EncodeDate(1752, 10, 1))) then { For historical/political reasons the days 1752-09-03 - 1752-09-13 do not exist in the Gregorian calendar - for some unknown reason the Microsoft calendar treats the period between 1752-09-20 and 1752-09-30 as missing instead, even though dates before 1752-09-14 are considered invalid as well (MS' offical explanation saying they only support the Gregorian calendar as of British adoption of it is not accurate: Britain adopted the Gregorian calendar starting 1752-01-01).} Result := False else Result := True; end; procedure TJvCustomDatePickerEdit.WMPaste(var Msg: TMessage); var OldSep: Char; begin OldSep := SysUtils.DateSeparator; SysUtils.DateSeparator := Self.DateSeparator; try inherited; finally SysUtils.DateSeparator := OldSep; end; end; //=== { TJvDropCalendar } ==================================================== procedure TJvDropCalendar.CalKeyPress(Sender: TObject; var Key: Char); begin if WithBeep then SysUtils.Beep; case Word(Key) of VK_RETURN: DoSelect; VK_ESCAPE: DoCancel; else DoChange; end; end; procedure TJvDropCalendar.CalKillFocus(const ASender: TObject; const ANextControl: TWinControl); var P: TPoint; begin GetCursorPos(P); if PtInRect(BoundsRect, P) then Exit; if Assigned(ANextControl) then FocusKilled(ANextControl.Handle) else FocusKilled(0); end; procedure TJvDropCalendar.CalSelChange(Sender: TObject; StartDate, EndDate: TDateTime); begin DoChange; end; procedure TJvDropCalendar.CalSelect(Sender: TObject; StartDate, EndDate: TDateTime); begin DoSelect; end; constructor TJvDropCalendar.CreateWithAppearance(AOwner: TComponent; const AAppearance: TJvMonthCalAppearance); begin inherited Create(AOwner); FWithBeep := False; FCal := TJvMonthCalendar2.CreateWithAppearance(Self, AAppearance); with TJvMonthCalendar2(FCal) do begin Parent := Self; ParentFont := True; OnSelChange := CalSelChange; OnSelect := CalSelect; OnKillFocus := CalKillFocus; OnKeyPress := CalKeyPress; Visible := True; AutoSize := True; end; end; destructor TJvDropCalendar.Destroy; begin if Assigned(FCal) then with TJvMonthCalendar2(FCal) do begin OnSelChange := nil; OnSelect := nil; OnKeyPress := nil; end; inherited Destroy; end; procedure TJvDropCalendar.DoCancel; begin if Assigned(OnCancel) then OnCancel(Self) else Release; end; procedure TJvDropCalendar.DoChange; begin if Assigned(OnChange) then OnChange(Self); end; procedure TJvDropCalendar.DoSelect; begin if Assigned(OnSelect) then OnSelect(Self); end; procedure TJvDropCalendar.DoShow; begin { In the constructor the calendar will sometimes report the wrong size, so we do this here. } AutoSize := True; TJvMonthCalendar2(FCal).Today:=Date; { update the current day } inherited DoShow; end; function TJvDropCalendar.GetSelDate: TDateTime; begin Result := TJvMonthCalendar2(FCal).DateFirst; end; procedure TJvDropCalendar.SetFocus; begin if FCal.CanFocus then FCal.SetFocus else inherited SetFocus; end; procedure TJvDropCalendar.SetSelDate(const AValue: TDateTime); begin TJvMonthCalendar2(FCal).DateFirst := AValue; end; {$IFDEF UNITVERSIONING} initialization RegisterUnitVersion(HInstance, UnitVersioning); finalization UnregisterUnitVersion(HInstance); {$ENDIF UNITVERSIONING} end.