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unit MetaEditor; |
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|
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interface |
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|
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uses |
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Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, |
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Dialogs, _BaseTemplate, ExtCtrls, VirtualTrees, StdCtrls; |
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|
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type |
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TForm_Meta = class(TForm_BaseTemplate) |
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VST: TVirtualStringTree; |
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Panel2: TPanel; |
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splitter: TSplitter; |
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procedure FormCreate(Sender: TObject); |
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procedure VSTInitChildren(Sender: TBaseVirtualTree; Node: PVirtualNode; |
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var ChildCount: Cardinal); |
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procedure FormClose(Sender: TObject; var Action: TCloseAction); |
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procedure VSTFocusChanged(Sender: TBaseVirtualTree; Node: PVirtualNode; |
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Column: TColumnIndex); |
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procedure VSTFocusChanging(Sender: TBaseVirtualTree; OldNode, |
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NewNode: PVirtualNode; OldColumn, NewColumn: TColumnIndex; |
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var Allowed: Boolean); |
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procedure VSTGetText(Sender: TBaseVirtualTree; Node: PVirtualNode; |
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Column: TColumnIndex; TextType: TVSTTextType; var CellText: WideString); |
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procedure VSTPaintText(Sender: TBaseVirtualTree; |
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const TargetCanvas: TCanvas; Node: PVirtualNode; Column: TColumnIndex; |
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TextType: TVSTTextType); |
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private |
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procedure NewCon(ID: Integer); |
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public |
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end; |
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|
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var |
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Form_Meta: TForm_Meta; |
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|
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implementation |
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{$R *.dfm} |
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uses _MetaManager, _FileTypes, Data; |
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|
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type |
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PNodeData = ^TNodeData; |
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|
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TNodeData = record |
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Field: TObject; |
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end; |
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|
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function AddVSTEntry(AVST: TCustomVirtualStringTree; ANode: PVirtualNode; |
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ARecord: TNodeData): PVirtualNode; |
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var |
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Data: PNodeData; |
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begin |
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Result := AVST.AddChild(ANode); |
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Data := AVST.GetNodeData(Result); |
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AVST.ValidateNode(Result, False); |
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Data^ := ARecord; |
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end; |
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|
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|
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procedure TForm_Meta.NewCon(ID: Integer); |
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var |
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a,b,c: Int64; |
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i: Integer; |
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data: TNodeData; |
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node: PVirtualNode; |
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begin |
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if ID >= 0 then |
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begin |
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QueryPerformanceFrequency(c); |
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QueryPerformanceCounter(a); |
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if not Assigned(Meta) then |
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Meta := TMetaManager.Create(ID); |
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QueryPerformanceCounter(b); |
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ShowMessage('Loading Done - ' + FloatToStr((b-a)/c) + 's'); |
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|
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VST.Clear; |
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VST.BeginUpdate; |
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for i := 0 to Meta.FileCount - 1 do |
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begin |
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if Assigned(Meta.FileById[i]) then |
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begin |
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data.Field := Meta.FileById[i]; |
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node := AddVSTEntry(VST, nil, data); |
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if Meta.FileById[i].ChildCount > 0 then |
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VST.HasChildren[node] := True; |
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end; |
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end; |
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VST.EndUpdate; |
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end; |
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end; |
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|
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|
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procedure TForm_Meta.VSTInitChildren(Sender: TBaseVirtualTree; |
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Node: PVirtualNode; var ChildCount: Cardinal); |
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var |
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data: PNodeData; |
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newdata: TNodeData; |
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newnode: PVirtualNode; |
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i: Integer; |
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id: Integer; |
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begin |
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data := VST.GetNodeData(node); |
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for i := 0 to Meta.FileById[TFile(data.Field).FileID].ChildCount - 1 do |
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begin |
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id := Meta.FileById[TFile(data.Field).FileID].LinkByIndex[i].DestID; |
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Meta.InitFile(id); |
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newdata.Field := Meta.FileById[id]; |
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newnode := AddVSTEntry(VST, Node, newdata); |
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if Meta.FileById[id].ChildCount > 0 then |
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VST.HasChildren[newnode] := True; |
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end; |
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ChildCount := Meta.FileById[TFile(data.Field).FileID].ChildCount; |
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end; |
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|
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|
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procedure TForm_Meta.VSTFocusChanged(Sender: TBaseVirtualTree; |
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Node: PVirtualNode; Column: TColumnIndex); |
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var |
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data: PNodeData; |
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begin |
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data := Sender.GetNodeData(Node); |
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if data.Field is TFile then |
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begin |
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TFile(data.Field).InitEditor; |
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if Assigned(TFile(data.Field).Editor) then |
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begin |
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panel2.InsertControl(TFile(data.Field).Editor); |
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TFile(data.Field).Opened := True; |
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end; |
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end; |
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end; |
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|
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|
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procedure TForm_Meta.VSTFocusChanging(Sender: TBaseVirtualTree; OldNode, |
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NewNode: PVirtualNode; OldColumn, NewColumn: TColumnIndex; |
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var Allowed: Boolean); |
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var |
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data: PNodeData; |
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i: Integer; |
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begin |
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data := Sender.GetNodeData(NewNode); |
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if data.Field is TFile then |
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begin |
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TFile(data.Field).InitEditor; |
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if Assigned(TFile(data.Field).Editor) then |
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Allowed := not TFile(data.Field).Opened |
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else |
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Allowed := True; |
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end; |
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if Allowed and Assigned(OldNode) then |
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begin |
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data := Sender.GetNodeData(OldNode); |
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if data.Field is TFile then |
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begin |
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if TFile(data.Field).Opened then |
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begin |
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if panel2.ControlCount > 0 then |
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for i := 0 to panel2.ControlCount - 1 do |
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panel2.RemoveControl(panel2.Controls[i]); |
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TFile(data.Field).Opened := False; |
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end; |
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end; |
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end; |
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end; |
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|
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|
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procedure TForm_Meta.VSTGetText(Sender: TBaseVirtualTree; Node: PVirtualNode; |
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Column: TColumnIndex; TextType: TVSTTextType; var CellText: WideString); |
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var |
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Data: PNodeData; |
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begin |
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Data := Sender.GetNodeData(Node); |
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CellText := ''; |
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if TextType = ttNormal then |
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begin |
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case Column of |
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0: |
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begin |
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if Data.Field is TFile then |
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begin |
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CellText := TFile(Data.Field).FileName; |
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if CellText = '' then |
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CellText := 'Unnamed'; |
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end; |
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end; |
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1: |
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begin |
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if Data.Field is TFile then |
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CellText := TFile(Data.Field).FileExt; |
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end; |
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2: |
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begin |
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if Data.Field is TFile then |
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CellText := IntToStr(TFile(Data.Field).FileID); |
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end; |
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end; |
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end; |
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end; |
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|
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|
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procedure TForm_Meta.VSTPaintText(Sender: TBaseVirtualTree; |
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const TargetCanvas: TCanvas; Node: PVirtualNode; Column: TColumnIndex; |
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TextType: TVSTTextType); |
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var |
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Data: PNodeData; |
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begin |
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Data := Sender.GetNodeData(Node); |
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if TextType = ttNormal then |
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begin |
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case Column of |
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0: |
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begin |
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if Data.Field is TFile then |
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begin |
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if Length(TFile(Data.Field).FileName) = 0 then |
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TargetCanvas.Font.Color := $C06060; |
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if TFile(Data.Field).FileSize = 0 then |
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TargetCanvas.Font.Color := $2020A0; |
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end; |
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end; |
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end; |
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end; |
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end; |
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|
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|
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|
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procedure TForm_Meta.FormClose(Sender: TObject; var Action: TCloseAction); |
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begin |
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Meta.Free; |
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inherited; |
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end; |
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|
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procedure TForm_Meta.FormCreate(Sender: TObject); |
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begin |
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inherited; |
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OnNewConnection := NewCon; |
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FConnectionID := -1; |
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|
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VST.NodeDataSize := SizeOf(TNodeData); |
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VST.Font.Charset := AppSettings.CharSet; |
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VST.Clear; |
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|
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UpdateConList; |
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end; |
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|
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end. |
