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https://github.com/HeidiSQL/HeidiSQL.git
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401 lines
12 KiB
ObjectPascal
401 lines
12 KiB
ObjectPascal
unit VirtualTreesReg;
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// This unit is an addendum to VirtualTrees.pas and contains code of design time editors as well as
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// for theirs and the tree's registration.
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interface
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// For some things to work we need code, which is classified as being unsafe for .NET.
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{$warn UNSAFE_TYPE off}
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{$warn UNSAFE_CAST off}
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{$warn UNSAFE_CODE off}
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uses
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Windows, Classes, DesignIntf, DesignEditors, VCLEditors, PropertyCategories,
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ColnEdit, VirtualTrees, VirtualTrees.DrawTree, VirtualTrees.HeaderPopup;
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type
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TVirtualTreeEditor = class (TDefaultEditor)
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public
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procedure Edit; override;
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end;
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procedure Register;
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//----------------------------------------------------------------------------------------------------------------------
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implementation
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uses
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StrEdit, Dialogs, TypInfo, SysUtils, Graphics, CommCtrl, ImgList, Controls,
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VirtualTrees.ClipBoard, VirtualTrees.Actions;
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type
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// The usual trick to make a protected property accessible in the ShowCollectionEditor call below.
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TVirtualTreeCast = class(TBaseVirtualTree);
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TClipboardElement = class(TNestedProperty, ICustomPropertyDrawing)
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private
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FElement: string;
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protected
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constructor Create(Parent: TPropertyEditor; AElement: string); reintroduce;
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public
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function AllEqual: Boolean; override;
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function GetAttributes: TPropertyAttributes; override;
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function GetName: string; override;
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function GetValue: string; override;
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procedure GetValues(Proc: TGetStrProc); override;
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procedure SetValue(const Value: string); override;
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procedure PropDrawName(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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procedure PropDrawValue(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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end;
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// This is a special property editor to make the strings in the clipboard format string list
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// being shown as subproperties in the object inspector. This way it is shown what formats are actually available
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// and the user can pick them with a simple yes/no choice.
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TGetPropEditProc = TGetPropProc;
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TClipboardFormatsProperty = class(TStringListProperty, ICustomPropertyDrawing)
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public
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function GetAttributes: TPropertyAttributes; override;
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procedure GetProperties(Proc: TGetPropEditProc); override;
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procedure PropDrawName(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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procedure PropDrawValue(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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end;
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resourcestring
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sVTHeaderCategoryName = 'Header';
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sVTPaintingCategoryName = 'Custom painting';
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sVTIncremenalCategoryName = 'Incremental search';
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//----------------------------------------------------------------------------------------------------------------------
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procedure TVirtualTreeEditor.Edit;
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begin
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ShowCollectionEditor(Designer, Component, TVirtualTreeCast(Component).Header.Columns, 'Columns');
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end;
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//----------------------------------------------------------------------------------------------------------------------
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constructor TClipboardElement.Create(Parent: TPropertyEditor; AElement: string);
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begin
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inherited Create(Parent);
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FElement := AElement;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TClipboardElement.AllEqual: Boolean;
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// Determines if this element is included or excluded in all selected components it belongs to.
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var
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I, Index: Integer;
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List: TClipboardFormats;
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V: Boolean;
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begin
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Result := False;
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if PropCount > 1 then
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begin
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List := TClipboardFormats(GetOrdValue);
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V := List.Find(FElement, Index);
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for I := 1 to PropCount - 1 do
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begin
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List := TClipboardFormats(GetOrdValue);
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if List.Find(FElement, Index) <> V then
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Exit;
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end;
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end;
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Result := True;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TClipboardElement.GetAttributes: TPropertyAttributes;
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begin
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Result := [paMultiSelect, paValueList, paSortList];
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TClipboardElement.GetName: string;
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begin
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Result := FElement;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TClipboardElement.GetValue: string;
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var
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List: TClipboardFormats;
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begin
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List := TClipboardFormats(GetOrdValue);
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Result := BooleanIdents[List.IndexOf(FElement) > -1];
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardElement.GetValues(Proc: TGetStrProc);
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begin
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Proc(BooleanIdents[False]);
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Proc(BooleanIdents[True]);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardElement.SetValue(const Value: string);
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var
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List: TClipboardFormats;
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I, Index: Integer;
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begin
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if CompareText(Value, 'True') = 0 then
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begin
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for I := 0 to PropCount - 1 do
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begin
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List := TClipboardFormats(GetOrdValueAt(I));
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List.Add(FElement);
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end;
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end
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else
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begin
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for I := 0 to PropCount - 1 do
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begin
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List := TClipboardFormats(GetOrdValueAt(I));
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if List.Find(FElement, Index) then
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List.Delete(Index);
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end;
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end;
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Modified;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure DrawBoolean(Checked: Boolean; ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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var
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BoxSize,
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EntryWidth: Integer;
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R: TRect;
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State: Cardinal;
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begin
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with ACanvas do
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begin
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FillRect(ARect);
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BoxSize := ARect.Bottom - ARect.Top;
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EntryWidth := ARect.Right - ARect.Left;
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R := Rect(ARect.Left + (EntryWidth - BoxSize) div 2, ARect.Top, ARect.Left + (EntryWidth + BoxSize) div 2,
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ARect.Bottom);
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InflateRect(R, -1, -1);
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State := DFCS_BUTTONCHECK;
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if Checked then
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State := State or DFCS_CHECKED;
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DrawFrameControl(Handle, R, DFC_BUTTON, State);
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end;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardElement.PropDrawName(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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begin
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DefaultPropertyDrawName(Self, ACanvas, ARect);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardElement.PropDrawValue(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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begin
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DrawBoolean(CompareText(GetVisualValue, 'True') = 0, ACanvas, ARect, ASelected);
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end;
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//----------------- TClipboardFormatsProperty --------------------------------------------------------------------------
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function TClipboardFormatsProperty.GetAttributes: TPropertyAttributes;
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begin
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Result := inherited GetAttributes + [paSubProperties, paFullWidthName];
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardFormatsProperty.GetProperties(Proc: TGetPropEditProc);
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var
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List: TStringList;
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I: Integer;
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Tree: TBaseVirtualTree;
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begin
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List := TStringList.Create;
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Tree := TClipboardFormats(GetOrdValue).Owner;
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EnumerateVTClipboardFormats(TVirtualTreeClass(Tree.ClassType), List);
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for I := 0 to List.Count - 1 do
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Proc(TClipboardElement.Create(Self, List[I]));
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardFormatsProperty.PropDrawName(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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var
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S: string;
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Width: Integer;
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R: TRect;
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begin
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with ACanvas do
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begin
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Font.Name := 'Arial';
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R := ARect;
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Font.Color := clBlack;
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S := GetName;
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Width := TextWidth(S);
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TextRect(R, R.Left + 1, R.Top + 1, S);
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Inc(R.Left, Width + 8);
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Font.Height := 14;
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Font.Color := clBtnHighlight;
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S := '(OLE drag and clipboard)';
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SetBkMode(Handle, TRANSPARENT);
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ExtTextOut(Handle, R.Left + 1, R.Top + 1, ETO_CLIPPED, @R, PChar(S), Length(S), nil);
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Font.Color := clBtnShadow;
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ExtTextOut(Handle, R.Left, R.Top, ETO_CLIPPED, @R, PChar(S), Length(S), nil);
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end;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TClipboardFormatsProperty.PropDrawValue(ACanvas: TCanvas; const ARect: TRect; ASelected: Boolean);
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begin
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// Nothing to do here.
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure Register;
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begin
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RegisterComponents('Virtual Controls', [TVirtualStringTree, TVirtualDrawTree, TVTHeaderPopupMenu]);
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RegisterComponentEditor(TVirtualStringTree, TVirtualTreeEditor);
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RegisterComponentEditor(TVirtualDrawTree, TVirtualTreeEditor);
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RegisterPropertyEditor(TypeInfo(TClipboardFormats), nil, '', TClipboardFormatsProperty);
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// Categories:
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RegisterPropertiesInCategory(sActionCategoryName, TBaseVirtualTree, ['ChangeDelay', 'EditDelay']);
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RegisterPropertiesInCategory(sDataCategoryName,
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TBaseVirtualTree,
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['NodeDataSize',
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'RootNodeCount',
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'OnCompareNodes',
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'OnGetNodeDataSize',
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'OnInitNode',
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'OnInitChildren',
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'OnFreeNode',
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'OnGetNodeWidth',
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'OnGetPopupMenu',
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'OnLoadNode',
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'OnSaveNode',
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'OnResetNode',
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'OnNodeMov*',
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'OnStructureChange',
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'OnUpdating',
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'OnGetText',
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'OnNewText',
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'OnShortenString']);
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RegisterPropertiesInCategory(slayoutCategoryName,
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TBaseVirtualTree,
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['AnimationDuration',
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'AutoExpandDelay',
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'AutoScroll*',
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'ButtonStyle',
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'DefaultNodeHeight',
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'*Images*', 'OnGetImageIndex', 'OnGetImageText',
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'Header',
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'Indent',
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'LineStyle', 'OnGetLineStyle',
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'CheckImageKind',
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'Options',
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'Margin',
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'NodeAlignment',
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'ScrollBarOptions',
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'SelectionCurveRadius',
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'TextMargin']);
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RegisterPropertiesInCategory(sVisualCategoryName,
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TBaseVirtualTree,
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['Background*',
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'ButtonFillMode',
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'CustomCheckimages',
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'Colors',
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'LineMode']);
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RegisterPropertiesInCategory(sHelpCategoryName,
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TBaseVirtualTree,
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['AccessibleName', 'Hint*', 'On*Hint*', 'On*Help*']);
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RegisterPropertiesInCategory(sDragNDropCategoryName,
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TBaseVirtualTree,
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['ClipboardFormats',
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'DefaultPasteMode',
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'OnCreateDataObject',
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'OnCreateDragManager',
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'OnGetUserClipboardFormats',
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'OnNodeCop*',
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'OnDragAllowed',
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'OnRenderOLEData']);
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RegisterPropertiesInCategory(sInputCategoryName,
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TBaseVirtualTree,
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['DefaultText',
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'DrawSelectionMode',
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'WantTabs',
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'OnChang*',
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'OnCollaps*',
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'OnExpand*',
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'OnCheck*',
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'OnEdit*',
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'On*Click',
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'OnFocus*',
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'OnCreateEditor',
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'OnScroll',
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'OnNodeHeightTracking',
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'OnHotChange']);
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RegisterPropertiesInCategory(sVTHeaderCategoryName,
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TBaseVirtualTree,
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['OnHeader*', 'OnGetHeader*']);
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RegisterPropertiesInCategory(sVTPaintingCategoryName,
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TBaseVirtualTree,
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['On*Paint*',
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'OnDraw*',
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'On*Erase*']);
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RegisterPropertiesInCategory(sVTIncremenalCategoryName,
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TBaseVirtualTree,
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['*Incremental*']);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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end.
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