Finish Component Browser example, with additional page of components
This commit is contained in:
Timothy Warren
parent
90f6a6756a
commit
ae20af005f
@ -15,6 +15,7 @@ object Form1: TForm1
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Width = 210
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Align = alLeft
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TabOrder = 0
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OnChange = tvCompsChange
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end
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inline seViewer: TSynEdit
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Left = 210
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@ -5,21 +5,32 @@ unit comp_browser_main;
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ComCtrls, Menus, Buttons,
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StdCtrls, ExtCtrls, ActnList, MaskEdit, grids, CheckLst, PairSplitter, ColorBox,
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ValEdit, SynHighlighterPosition, strutils, SynEdit, typinfo;
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ComCtrls, Menus,
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Buttons, StdCtrls, ExtCtrls, ActnList, MaskEdit, grids, CheckLst, PairSplitter,
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ColorBox, ValEdit, SynHighlighterPosition, strutils, SynEdit, DateTimePicker,
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PopupNotifier, typinfo;
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type
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TPalettePage = (ppStandard, ppAdditional, ppOtherPagesNotListedHere);
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TPalettePage = (ppStandard, ppAdditional, ppCommonControls, ppOtherPagesNotListedHere);
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{ TForm1 }
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TForm1 = class(TForm)
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seViewer: TSynEdit;
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tvComps: TTreeView;
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procedure FormCreate(Sender: TObject);
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procedure tvCompsChange(Sender: TObject; Node: TTreeNode);
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private
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compClass: TComponentClass;
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Hiliter: TSynPositionHighlighter;
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atrUL, atrBD: TtkTokenKind;
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lineNo: integer;
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procedure LoadTreeView;
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procedure DisplayComponentInfo(aNode: TTreeNode);
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procedure DisplayPageInfo(aNode: TTreeNode);
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procedure DisplayComponentData;
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procedure DisplayComponentHierarchy(aNode: TTreeNode);
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procedure DisplayComponentProperties;
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function GetAncestorCount(aClass: TClass): integer;
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function GetComponentClass(aPage: TPalettePage; anIndex: word): TComponentClass;
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public
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@ -28,7 +39,7 @@ type
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const
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MaxComponentsOnAPage = 21; // AdditionalPage
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PageNames : array[TPalettePage] of shortstring =
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('Standard', 'Additional', 'Other unlisted pages');
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('Standard', 'Additional', 'Common Controls', 'Other unlisted pages');
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var
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Form1: TForm1;
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@ -41,9 +52,18 @@ implementation
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procedure TForm1.FormCreate(Sender: TObject);
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begin
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hiliter := TSynPositionHighlighter.Create(Self);
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seViewer.Highlighter := hiliter;
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atrUL := hiliter.CreateTokenID('atrUL', clBlue, clNone, [fsBold, fsUnderline]);
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atrBD := hiliter.CreateTokenID('atrBD', clBlack, clNone, [fsBold]);
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LoadTreeView;
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end;
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procedure TForm1.tvCompsChange(Sender: TObject; Node: TTreeNode);
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begin
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DisplayComponentInfo(Node);
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end;
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procedure TForm1.LoadTreeView;
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var aNode: TTreeNode;
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palPage: TPalettePage;
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@ -69,6 +89,210 @@ begin
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tvComps.Selected := tvComps.Items[0];
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end;
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procedure TForm1.DisplayComponentInfo(aNode: TTreeNode);
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begin
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seViewer.Lines.Clear;
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hiliter.ClearAllTokens;
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lineNo := 0;
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case aNode.Level of
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0: begin
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seViewer.Lines.Add('');
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seViewer.Lines.Add(' (' + aNode.Text + ' Page)');
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end
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else
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begin
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compClass := TComponentClass(aNode.Data);
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DisplayPageInfo(aNode);
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DisplayComponentData;
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DisplayComponentHierarchy(aNode);
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DisplayComponentProperties;
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end;
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end;
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end;
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procedure TForm1.DisplayPageInfo(aNode: TTreeNode);
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var s: string;
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begin
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seViewer.Lines.Add('');
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inc(lineNo);
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s := ' Palette Page: ' + aNode.Parent.Text;
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hiliter.AddToken(lineNo, 1, tkText);
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hiliter.AddToken(lineNo, Length(s), atrUL);
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seViewer.Lines.Add(s);
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inc(lineNo);
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seViewer.Lines.Add('');
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inc(lineNo);
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end;
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procedure TForm1.DisplayComponentData;
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var st: string;
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begin
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st := ' ' + compClass.ClassName;
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HiLiter.AddToken(lineNo, 1, tkText);
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HiLiter.AddToken(lineNo, Length(st), atrUL);
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seViewer.Lines.Add(st);
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inc(lineNo);
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seViewer.Lines.Add('');
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inc(lineNo);
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seViewer.Lines.Add(
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Format(' ''%s'' is declared in the %s unit', [
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compClass.ClassName,
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compClass.UnitName
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])
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);
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inc(lineNo);
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seViewer.Lines.Add(
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Format(' InstanceSize is : %d bytes', [compClass.InstanceSize])
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);
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inc(lineNo);
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seViewer.Lines.Add('');
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inc(lineNo);
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end;
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procedure TForm1.DisplayComponentHierarchy(aNode: TTreeNode);
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var
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sl: TStringList;
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step: integer = 1;
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ancestorCount : integer = 0;
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i: integer;
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s: string;
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aClass: TClass;
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function Plural(aCount: integer): string;
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begin
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case aCount of
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1: result := '';
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else result := 'es';
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end;
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end;
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begin
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ancestorCount := GetAncestorCount(compClass);
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s := Format(
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' %s class hierarchy [%d ancestor class%s]',
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[compClass.ClassName, ancestorCount, Plural(ancestorCount)]
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);
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hiliter.AddToken(lineNo, 1, tkText);
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hiliter.AddToken(lineNo, Length(s), atrBD);
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seViewer.Lines.Add(s);
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inc(lineNo);
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aClass := TClass(aNode.Data);
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if Assigned(aClass.ClassParent) then
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begin
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sl := TStringList.Create;
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try
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while Assigned(aClass.ClassParent) do
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begin
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sl.Add(DupeString(' ', step) + aClass.ClassName);
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aClass := aClass.ClassParent;
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inc(step, 2);
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end;
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sl.Add(DupeString(' ', step) + aClass.ClassName);
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for i := sl.Count -1 downto 0 do
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begin
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seViewer.Lines.Add(sl[i]);
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inc(lineNo);
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end;
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finally
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sl.Free;
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end;
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end
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else
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begin
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seViewer.Lines.Add(' (No parent class)');
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inc(lineNo);
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end;
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end;
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procedure TForm1.DisplayComponentProperties;
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var
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aPPI: PPropInfo;
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aPTI: PTypeInfo;
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aPTD: PTypeData;
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aPropList: PPropList;
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sortSL: TStringList;
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i: integer;
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s: string;
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begin
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seViewer.Lines.Add('');
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inc(LineNo);
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aPTI := PTypeInfo(compClass.ClassInfo);
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aPTD := GetTypeData(aPTI);
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s := Format(
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' %s has %d published properties:',
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[aPTI^.Name, aPTD^.PropCount]
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);
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hiliter.AddToken(lineNo, 1, tkText);
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hiliter.AddToken(lineNo, Length(s), atrBD);
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seViewer.Lines.Add(s);
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inc(lineNo);
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if (aPTD^.PropCount = 0)
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then seViewer.Lines.Add(' (no published properties)')
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else
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begin
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GetMem(aPropList, SizeOf(PPropInfo^) * aPTD^.PropCount);
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sortSL := TStringList.Create;
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sortSL.Sorted := true;
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try
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GetPropInfos(aPTI, aPropList);
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for i := 0 to aPTD^.PropCount - 1 do
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begin
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aPPI := aPropList^[i];
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sortSL.AddObject(Format(
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' %s: %s',
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[aPPI^.Name, aPPI^.PropType^.Name]
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), TObject(Pointer(Length(aPPI^.Name))));
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end;
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for i := 0 to sortSL.Count - 1 do
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begin
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seViewer.Lines.Add(sortSL[i]);
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hiliter.AddToken(lineNo, Succ(Integer(Pointer(sortSL.Objects[i]))), atrBD);
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hiliter.AddToken(lineNo, Length(sortSL[i]), tkText);
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inc(lineNo);
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end;
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finally
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FreeMem(aPropList, SizeOf(PPropInfo) * aPTD^.PropCount);
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sortSL.Free;
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end;
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end;
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end;
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function TForm1.GetAncestorCount(aClass: TClass): integer;
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begin
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result := 0;
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if not Assigned(aClass.ClassParent)
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then Exit
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else
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begin
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while Assigned(aClass.ClassParent) do
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begin
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inc(result);
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aClass := aClass.ClassParent;
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end;
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end;
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end;
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function TForm1.GetComponentClass(
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aPage: TPalettePage;
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anIndex: word
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@ -120,6 +344,23 @@ begin
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21: result := TValueListEditor;
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else result := nil;
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end;
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ppCommonControls: case anIndex of
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1: result := TTrackBar;
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2: result := TProgressBar;
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3: result := TTreeView;
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4: result := TListView;
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5: result := TStatusBar;
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6: result := TToolBar;
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7: result := TCoolBar;
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8: result := TUpDown;
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9: result := TPageControl;
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10: result := TTabControl;
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11: result := THeaderControl;
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12: result := TImageList;
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13: result := TPopupNotifier;
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14: result := TDateTimePicker;
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else result := nil;
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end;
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else result := nil;
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end;
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end;
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@ -25,13 +25,16 @@
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<FormatVersion Value="2"/>
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<Modes Count="0"/>
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</RunParams>
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<RequiredPackages Count="2">
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<RequiredPackages Count="3">
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<Item1>
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<PackageName Value="SynEdit"/>
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<PackageName Value="DateTimeCtrls"/>
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</Item1>
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<Item2>
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<PackageName Value="LCL"/>
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<PackageName Value="SynEdit"/>
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</Item2>
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<Item3>
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<PackageName Value="LCL"/>
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</Item3>
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</RequiredPackages>
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<Units Count="2">
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<Unit0>
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@ -7,7 +7,7 @@ uses
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cthreads,
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{$ENDIF}{$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms, comp_browser_main
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Forms, datetimectrls, comp_browser_main
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{ you can add units after this };
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{$R *.res}
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