cxhyperlinkedit.pas

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{       Developer Express Visual Component Library                   }
{       ExpressEditors                                               }
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unit cxHyperLinkEdit;

{$I cxVer.inc}

interface

uses
  Messages,
  Windows,
{$IFDEF DELPHI6}
  Types,
{$ENDIF}
  SysUtils, Graphics, Classes, Controls, Menus, cxGraphics, cxContainer,
  cxControls, cxEdit, cxTextEdit, cxEditConsts, cxFilterControlUtils;

const
  cxHyperLinkEditDefaultLinkColor = clBlue;

type
  { TcxHyperLinkEditViewInfo }

  TcxCustomHyperLinkEdit = class;

  TcxHyperLinkEditViewInfo = class(TcxCustomTextEditViewInfo)
  protected
    procedure GetColorSettingsByPainter(out ABackground, ATextColor: TColor); override;
  public
    function IsHotTrack: Boolean; override;
    function IsHotTrack(P: TPoint): Boolean; override;
    procedure PrepareCanvasFont(ACanvas: TCanvas); override;
  end;

  { TcxCustomHyperLinkEditProperties }

  TcxHyperLinkEditUsePrefix = (upAlways, upOnlyOnExecute, upNever);

  TcxCustomHyperLinkEditProperties = class(TcxCustomTextEditProperties)
  private
    FSingleClick: Boolean;
    FLinkColor: TColor;
    FOnStartClick: TNotifyEvent;
    FPrefix: string;
    FStartKey: TShortCut;
    FUsePrefix: TcxHyperLinkEditUsePrefix;
    function GetAutoComplete: Boolean;
    function GetPrefixStored: Boolean;
    procedure ReadPrefix(Reader: TReader);
    procedure SetAutoComplete(Value: Boolean);
    procedure SetLinkColor(const Value: TColor);
    procedure SetSingleClick(Value: Boolean);
    procedure WritePrefix(Writer: TWriter);
  protected
    procedure DefineProperties(AFiler: TFiler); override;
    function AddPrefixTo(AStr: string): string; virtual;
  public
    constructor Create(AOwner: TPersistent); override;
    procedure Assign(Source: TPersistent); override;
    class function GetContainerClass: TcxContainerClass; override;
    class function GetStyleClass: TcxCustomEditStyleClass; override;
    function GetSupportedOperations: TcxEditSupportedOperations; override;
    class function GetViewInfoClass: TcxContainerViewInfoClass; override;
    procedure ValidateDisplayValue(var ADisplayValue: TcxEditValue;
      var AErrorText: TCaption; var Error: Boolean; AEdit: TcxCustomEdit); override;
    // !!!
    property AutoComplete: Boolean read GetAutoComplete write SetAutoComplete
      stored False; // deprecated
    property AutoSelect default False;
    property LinkColor: TColor read FLinkColor write SetLinkColor
      default cxHyperLinkEditDefaultLinkColor;
    property Prefix: string read FPrefix write FPrefix stored False;
    property SingleClick: Boolean read FSingleClick write SetSingleClick
      default False;
    property StartKey: TShortCut read FStartKey write FStartKey
      default VK_RETURN + scCtrl;
    property UsePrefix: TcxHyperLinkEditUsePrefix read FUsePrefix
      write FUsePrefix default upAlways; 
    property OnStartClick: TNotifyEvent read FOnStartClick write FOnStartClick;
  end;

  { TcxHyperLinkEditProperties }

  TcxHyperLinkEditProperties = class(TcxCustomHyperLinkEditProperties)
  published
    property Alignment;
    property AssignedValues;
    property AutoComplete; // deprecated
    property AutoSelect;
    property ClearKey;
    property ImeMode;
    property ImeName;
    property IncrementalSearch;
    property LinkColor;
    property LookupItems;
    property LookupItemsSorted;
    property Prefix;
    property ReadOnly;
    property StartKey;
    property SingleClick;
    property UseLeftAlignmentOnEditing;
    property UsePrefix;
    property ValidateOnEnter;
    property OnChange;
    property OnEditValueChanged;
    property OnStartClick;
    property OnValidate;
  end;

  { TcxHyperLinkStyle }

  TcxHyperLinkStyle = class(TcxEditStyle)
  protected
    function GetTextColor: TColor; override;
    function GetTextStyle: TFontStyles; override;
  end;

  { TcxCustomHyperLinkEdit }

  TcxCustomHyperLinkEdit = class(TcxCustomTextEdit)
  private
    FSaveCursor: TCursor;
    function GetActiveProperties: TcxCustomHyperLinkEditProperties;
    function GetProperties: TcxCustomHyperLinkEditProperties;
    function GetStyle: TcxHyperLinkStyle;
    procedure InternalSetCursor(ACursor: TCursor);
    procedure SetProperties(const Value: TcxCustomHyperLinkEditProperties);
    procedure SetStyle(Value: TcxHyperLinkStyle);
  protected
    function DoOnStartClick: Boolean;
    procedure DoStart; virtual;
    procedure KeyDown(var Key: Word; Shift: TShiftState); override;
    procedure MouseDown(Button: TMouseButton; Shift: TShiftState;
      X, Y: Integer); override;
    procedure MouseEnter(AControl: TControl); override;
    procedure MouseLeave(AControl: TControl); override;
    procedure MouseUp(Button: TMouseButton; Shift: TShiftState;
      X, Y: Integer); override;
    procedure PropertiesChanged(Sender: TObject); override;
  public
    procedure ActivateByMouse(Shift: TShiftState; X, Y: Integer;
      var AEditData: TcxCustomEditData); override;
    class function GetPropertiesClass: TcxCustomEditPropertiesClass; override;
    procedure SelectAll; override;
    property ActiveProperties: TcxCustomHyperLinkEditProperties read GetActiveProperties;
    property Properties: TcxCustomHyperLinkEditProperties read GetProperties
      write SetProperties;
    property Style: TcxHyperLinkStyle read GetStyle write SetStyle;
  end;

  { TcxHyperLinkEdit }

  TcxHyperLinkEdit = class(TcxCustomHyperLinkEdit)
  private
    function GetActiveProperties: TcxHyperLinkEditProperties;
    function GetProperties: TcxHyperLinkEditProperties;
    procedure SetProperties(Value: TcxHyperLinkEditProperties);
  public
    class function GetPropertiesClass: TcxCustomEditPropertiesClass; override;
    property ActiveProperties: TcxHyperLinkEditProperties read GetActiveProperties;
  published
    property Anchors;
    property AutoSize;
    property BeepOnEnter;
    property Constraints;
    property DragCursor;
    property DragKind;
    property DragMode;
    property Enabled;
    property ImeMode;
    property ImeName;
    property ParentColor;
    property ParentFont;
    property ParentShowHint;
    property PopupMenu;
    property Properties: TcxHyperLinkEditProperties read GetProperties write SetProperties;
    property ShowHint;
    property Style;
    property StyleDisabled;
    property StyleFocused;
    property StyleHot;
    property TabOrder;
    property TabStop;
    property Text;
    property Visible;
    property OnClick;
{$IFDEF DELPHI5}
    property OnContextPopup;
{$ENDIF}
    property OnDblClick;
    property OnEditing;
    property OnEnter;
    property OnExit;
    property OnKeyDown;
    property OnKeyPress;
    property OnKeyUp;
    property OnMouseDown;
    property OnMouseMove;
    property OnMouseUp;
    property BiDiMode;
    property ParentBiDiMode;
    property OnEndDock;
    property OnStartDock;
  end;

  { TcxFilterHyperLinkEditHelper }

  TcxFilterHyperLinkEditHelper = class(TcxFilterTextEditHelper)
  public
    class function GetFilterEditClass: TcxCustomEditClass; override;
  end;

implementation

uses
  ShellAPI,
{$IFDEF DELPHI6}
  Variants,
{$ENDIF}
  Forms, cxVariants, cxClasses, cxLibraryConsts;

{ TcxHyperLinkEditViewInfo }

procedure TcxHyperLinkEditViewInfo.GetColorSettingsByPainter(
  out ABackground, ATextColor: TColor);
begin
  inherited GetColorSettingsByPainter(ABackground, ATextColor);
  ATextColor := clDefault;
end;

function TcxHyperLinkEditViewInfo.IsHotTrack: Boolean;
begin
  Result := inherited IsHotTrack or
    TcxCustomHyperLinkEditProperties(EditProperties).SingleClick;
end;

function TcxHyperLinkEditViewInfo.IsHotTrack(P: TPoint): Boolean;
begin
  Result := IsHotTrack;
end;

procedure TcxHyperLinkEditViewInfo.PrepareCanvasFont(ACanvas: TCanvas);
begin
  inherited PrepareCanvasFont(ACanvas);
  if Edit = nil then
  begin
    ACanvas.Font.Style := ACanvas.Font.Style + [fsUnderline];
    if IsSelected then
      ACanvas.Font.Color := TextColor
    else
      ACanvas.Font.Color := TcxCustomHyperLinkEditProperties(EditProperties).LinkColor;
  end;
end;

{ TcxCustomHyperLinkEditProperties }

constructor TcxCustomHyperLinkEditProperties.Create(AOwner: TPersistent);
begin
  inherited Create(AOwner);
  AutoSelect := False;
  FLinkColor := clBlue;
  FPrefix := cxGetResourceString(@scxSHyperLinkPrefix);
  FSingleClick := False;
  FStartKey := VK_RETURN + scCtrl;
  FUsePrefix := upAlways;
end;

function TcxCustomHyperLinkEditProperties.GetAutoComplete: Boolean;
begin
  Result := not (UsePrefix = upNever); 
end;

function TcxCustomHyperLinkEditProperties.GetPrefixStored: Boolean;