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LogViewer.MessageList.View.pas
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LogViewer.MessageList.View.pas
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{
Copyright (C) 2013-2022 Tim Sinaeve tim.sinaeve@gmail.com
Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
}
unit LogViewer.MessageList.View;
{ Log message viewer form. }
interface
{$REGION 'documentation'}
{ Message viewer responsible for displaying all messages from an associated
log channel (IChannelReceiver receiver instance) }
{$ENDREGION}
uses
Winapi.Windows, Winapi.Messages,
System.SysUtils, System.Variants, System.Classes, System.ImageList,
Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls,
Vcl.ExtCtrls, Vcl.Buttons, Vcl.ComCtrls, Vcl.ImgList,
VirtualTrees, VirtualTrees.BaseTree, kcontrols, kpagecontrol, OMultiPanel,
Spring, Spring.Collections,
DDuce.Editor.Interfaces, DDuce.Logger.Interfaces,
LogViewer.Watches.Data, LogViewer.Watches.View, LogViewer.Interfaces,
LogViewer.CallStack.Data, LogViewer.CallStack.View, LogViewer.ValueList.View,
LogViewer.MessageList.Settings, LogViewer.MessageList.LogNode,
LogViewer.DisplayValues.Settings, LogViewer.DataSet.View,
LogViewer.Image.View, LogViewer.RawData.View, LogViewer.MessageData.View;
type
TfrmMessageList = class(TForm, ILogViewer)
{$REGION 'designer controls'}
chkShowDetails : TCheckBox;
chkShowWatchHistory : TCheckBox;
chkSyncWithSelectedMessage : TCheckBox;
edtMessageFilter : TButtonedEdit;
imlMessageTypes : TImageList;
pgcMessageData : TKPageControl;
pgcMessageDetails : TKPageControl;
pnlCallStack : TPanel;
pnlCallStackTitle : TPanel;
pnlFilter : TPanel;
pnlLeft : TOMultiPanel;
pnlMain : TOMultiPanel;
pnlMessageContent : TPanel;
pnlMessageData : TPanel;
pnlMessages : TPanel;
pnlRight : TPanel;
pnlTextViewer : TPanel;
pnlWatches : TPanel;
pnlWatchTitle : TPanel;
splRightHorizontal : TSplitter;
tsDataSet : TKTabSheet;
tsImageViewer : TKTabSheet;
tsMessageView : TKTabSheet;
tsRawData : TKTabSheet;
tsTextViewer : TKTabSheet;
tsValueList : TKTabSheet;
{$ENDREGION}
{$REGION 'event handlers'}
procedure chkShowWatchHistoryClick(Sender: TObject);
procedure edtMessageFilterChange(Sender: TObject);
procedure edtMessageFilterKeyDown(
Sender : TObject;
var Key : Word;
Shift : TShiftState
);
procedure edtMessageFilterKeyUp(
Sender : TObject;
var Key : Word;
Shift : TShiftState
);
procedure edtMessageFilterMouseEnter(Sender: TObject);
procedure edtMessageFilterMouseLeave(Sender: TObject);
procedure chkShowDetailsClick(Sender: TObject);
procedure chkSyncWithSelectedMessageClick(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure pnlMainSplitterMoved(Sender: TObject);
procedure pnlMessagesResize(Sender: TObject);
procedure tsRawDataShow(Sender: TObject);
procedure pnlMainCanResize(Sender: TObject; var NewWidth,
NewHeight: Integer; var Resize: Boolean);
procedure edtMessageFilterExit(Sender: TObject);
procedure FormShow(Sender: TObject);
{$ENDREGION}
private class var
FCounter : Integer;
private
FManager : ILogViewerManager;
FUpdating : Boolean;
// state information
FUpdate : Boolean; // trigger UpdateActions of Manager
FSubscriber : ISubscriber;
FLastParent : PVirtualNode;
FLastNode : PVirtualNode;
FVKPressed : Boolean;
FMiliSecondsBetweenSelection : Integer;
FLastSelectedNode : TLogNode;
// data
FWatches : TWatchList;
FCurrentMsg : TLogMessage;
FCallStack : IList<TCallStackData>;
// views
FLogTreeView : TVirtualStringTree;
FCallStackView : TfrmCallStackView;
FWatchesView : TfrmWatchesView;
FMessageDataView : TfrmMessageDataView;
FValueList : TfrmValueListView;
FDataSetView : TfrmDataSetView;
FImageView : TfrmImageView;
FRawDataView : TfrmRawDataView;
FEditorView : IEditorView;
// settings
FSettings : TMessageListSettings;
FExpandParents : Boolean;
FAutoSizeColumns : Boolean;
FScrollToLastNode : Boolean;
{$REGION 'property access methods'}
function GetManager: ILogViewerManager;
function GetActions: ILogViewerActions;
function GetSubscriber: ISubscriber;
function GetForm: TCustomForm;
function GetSettings: TMessageListSettings;
function GetDisplayValuesSettings: TDisplayValuesSettings;
function GetIsActiveView: Boolean;
function GetEditorView: IEditorView;
function GetSelectedLogNode: TLogNode;
procedure SetSelectedLogNode(const Value: TLogNode);
function GetMessageCount: Int64;
function GetMilliSecondsBetweenSelection: Integer;
function GetLeftPanelVisible: Boolean;
procedure SetLeftPanelVisible(const Value: Boolean);
function GetRightPanelVisible: Boolean;
procedure SetRightPanelVisible(const Value: Boolean);
{$ENDREGION}
{$REGION 'event handlers'}
{$REGION 'FLogTreeView event handlers'}
procedure FLogTreeViewFilterCallback(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Data : Pointer;
var Abort : Boolean
);
procedure FLogTreeViewDblClick(Sender: TObject);
procedure FLogTreeViewFocusChanging(
Sender : TBaseVirtualTree;
OldNode, NewNode : PVirtualNode;
OldColumn, NewColumn : TColumnIndex;
var Allowed : Boolean
);
procedure FLogTreeViewFocusChanged(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Column : TColumnIndex
);
procedure FLogTreeViewFreeNode(
Sender : TBaseVirtualTree;
Node : PVirtualNode
);
procedure FLogTreeViewGetImageIndex(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Kind : TVTImageKind;
Column : TColumnIndex;
var Ghosted : Boolean;
var ImageIndex : TImageIndex
);
procedure FLogTreeViewGetText(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Column : TColumnIndex;
TextType : TVSTTextType;
var CellText : string
);
procedure FLogTreeViewInitNode(
Sender : TBaseVirtualTree;
ParentNode : PVirtualNode;
Node : PVirtualNode;
var InitialStates : TVirtualNodeInitStates
);
procedure FLogTreeViewKeyPress(
Sender : TObject;
var Key : Char
);
procedure FLogTreeViewBeforeCellPaint(
Sender : TBaseVirtualTree;
TargetCanvas : TCanvas;
Node : PVirtualNode;
Column : TColumnIndex;
CellPaintMode : TVTCellPaintMode;
CellRect : TRect;
var ContentRect : TRect
);
procedure FLogTreeViewAfterItemPaint(
Sender : TBaseVirtualTree;
TargetCanvas : TCanvas;
Node : PVirtualNode;
ItemRect : TRect
);
procedure FLogTreeViewPaintText(
Sender : TBaseVirtualTree;
const TargetCanvas : TCanvas;
Node : PVirtualNode;
Column : TColumnIndex;
TextType : TVSTTextType
);
procedure FLogTreeViewHotChange(
Sender : TBaseVirtualTree;
OldNode : PVirtualNode;
NewNode : PVirtualNode
);
procedure FLogTreeViewCollapsed(
Sender : TBaseVirtualTree;
Node : PVirtualNode
);
procedure FLogTreeViewExpanded(
Sender : TBaseVirtualTree;
Node : PVirtualNode
);
procedure FLogTreeViewExpanding(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
var Allowed : Boolean
);
procedure FLogTreeViewGetHint(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Column : TColumnIndex;
var LineBreakStyle : TVTTooltipLineBreakStyle;
var HintText : string
);
procedure FLogTreeViewGetHintKind(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Column : TColumnIndex;
var Kind : TVTHintKind
);
procedure FLogTreeViewGetHintSize(
Sender : TBaseVirtualTree;
Node : PVirtualNode;
Column : TColumnIndex;
var R : TRect
);
procedure FLogTreeViewDrawHint(
Sender : TBaseVirtualTree;
HintCanvas : TCanvas;
Node : PVirtualNode;
R : TRect;
Column : TColumnIndex
);
{$ENDREGION}
procedure FSettingsChanged(Sender: TObject);
procedure FSubscriberReceiveMessage(
Sender : TObject;
AStream : TStream
);
procedure WatchSettingsChanged(Sender: TObject);
{$ENDREGION}
function IsCollapsedTracingNode(
ATree : TBaseVirtualTree;
ANode : PVirtualNode
): Boolean;
procedure EnsureCurrentViewIsActiveViewWhenFocused;
function ParseValue(const AString: string): Tuple<string, string, string>;
protected
procedure Clear;
procedure AutoFitColumns;
procedure ApplySettings;
procedure ApplyFilter;
procedure LoadPanelSettings;
procedure SavePanelSettings;
procedure ProcessMessage(AStream: TStream);
procedure AddMessageToTree(const AMessage: TLogMessage);
procedure Modified;
procedure UpdateCallStackDisplay(ALogNode: TLogNode);
procedure UpdateMessageDetails(ALogNode: TLogNode);
procedure UpdateComponentDisplay(ALogNode: TLogNode);
procedure UpdateBitmapDisplay(ALogNode: TLogNode);
procedure UpdateDataSetDisplay(ALogNode: TLogNode);
procedure UpdateTextDisplay(ALogNode: TLogNode);
procedure UpdateTextStreamDisplay(ALogNode: TLogNode);
procedure UpdateRawDataDisplay(ALogNode: TLogNode);
procedure UpdateColorDisplay(ALogNode: TLogNode);
procedure UpdateValueDisplay(ALogNode: TLogNode);
procedure UpdateLogTreeView;
procedure ClearMessageDetailsControls;
procedure CreateLogTreeView;
procedure CreateEditor;
procedure CreateCallStackView;
procedure CreateWatchesView;
procedure CreateValueListView;
procedure CreateDataSetView;
procedure CreateImageView;
procedure CreateRawDataView;
procedure CreateMessageDataView;
procedure CollapseAll;
procedure ExpandAll;
procedure SetFocusToFilter;
procedure SelectAll;
procedure ClearSelection;
procedure Activate; override;
procedure UpdateActions; override;
procedure UpdateView;
procedure UpdateTreeColumns;
procedure GotoFirst;
procedure GotoLast;
property IsActiveView: Boolean
read GetIsActiveView;
property EditorView: IEditorView
read GetEditorView;
property Manager: ILogViewerManager
read GetManager;
property Actions: ILogViewerActions
read GetActions;
property Subscriber: ISubscriber
read GetSubscriber;
property Settings: TMessageListSettings
read GetSettings;
property DisplayValuesSettings: TDisplayValuesSettings
read GetDisplayValuesSettings;
property Form: TCustomForm
read GetForm;
property MilliSecondsBetweenSelection: Integer
read GetMilliSecondsBetweenSelection;
property SelectedLogNode: TLogNode
read GetSelectedLogNode write SetSelectedLogNode;
property MessageCount: Int64
read GetMessageCount;
property LeftPanelVisible: Boolean
read GetLeftPanelVisible write SetLeftPanelVisible;
property RightPanelVisible: Boolean
read GetRightPanelVisible write SetRightPanelVisible;
public
constructor Create(
AOwner : TComponent;
AManager : ILogViewerManager;
ASubscriber : ISubscriber;
ASettings : TMessageListSettings
); reintroduce; virtual;
procedure AfterConstruction; override;
destructor Destroy; override;
end;
implementation
{$R *.dfm}
uses
System.StrUtils, System.UITypes, System.DateUtils, System.Math,
Vcl.GraphUtil,
VirtualTrees.Types, VirtualTrees.Header,
Spring.Helpers,
DDuce.Factories.VirtualTrees, DDuce.Editor.Factories, DDuce.Utils,
DDuce.Logger, DDuce.DynamicRecord,
LogViewer.Manager, LogViewer.Factories, LogViewer.Resources;
{$REGION 'construction and destruction'}
constructor TfrmMessageList.Create(AOwner: TComponent; AManager
: ILogViewerManager; ASubscriber: ISubscriber; ASettings: TMessageListSettings);
begin
inherited Create(AOwner);
Guard.CheckNotNull(AManager, 'AManager');
Guard.CheckNotNull(ASubscriber, 'ASubscriber');
Guard.CheckNotNull(ASettings, 'ASettings');
FManager := AManager;
FSubscriber := ASubscriber;
FSettings := ASettings;
end;
procedure TfrmMessageList.AfterConstruction;
begin
inherited AfterConstruction;
Inc(FCounter);
FMiliSecondsBetweenSelection := -1;
edtMessageFilter.OnRightButtonClick :=
FManager.Actions.Items['actFilterMessages'].OnExecute;
chkShowWatchHistory.Checked :=
Manager.Settings.WatchSettings.WatchHistoryVisible;
chkSyncWithSelectedMessage.Checked :=
Manager.Settings.WatchSettings.SyncWithSelection;
chkShowDetails.Checked := Settings.MessageDetailsVisible;
splRightHorizontal.Visible := Settings.MessageDetailsVisible;
pnlMessageData.Visible := Settings.MessageDetailsVisible;
FExpandParents := True;
CreateEditor;
CreateLogTreeView;
CreateWatchesView;
CreateCallStackView;
CreateValueListView;
CreateDataSetView;
CreateImageView;
CreateRawDataView;
CreateMessageDataView;
pgcMessageData.ActivePage := tsMessageView;
Caption := Copy(ClassName, 2, Length(ClassName)) + IntToStr(FCounter);
Logger.Info('Creating new message viewer (%s)', [Caption]);
ApplySettings;
Subscriber.OnReceiveMessage.Add(FSubscriberReceiveMessage);
FSettings.OnChanged.Add(FSettingsChanged);
Manager.Settings.WatchSettings.OnChanged.Add(WatchSettingsChanged);
FLogTreeView.PopupMenu := Manager.Menus.LogTreeViewerPopupMenu;
end;
destructor TfrmMessageList.Destroy;
begin
Logger.Track(Self, 'Destroy');
Manager.Settings.WatchSettings.OnChanged.RemoveAll(Self);
if Assigned(FSubscriber) then
begin
FSubscriber.OnReceiveMessage.RemoveAll(Self);
FSubscriber := nil;
end;
if Assigned(FSettings) then
begin
FSettings.OnChanged.RemoveAll(Self);
SavePanelSettings;
FSettings := nil;
end;
FEditorView.Form.Free; // prevents the instance to be freed by the owning
// manager instance or the parent control.
FEditorView := nil;
FCallStack := nil;
FreeAndNil(FCurrentMsg.Data);
FreeAndNil(FValueList);
FreeAndNil(FDataSetView);
FreeAndNil(FImageView);
FreeAndNil(FRawDataView);
FreeAndNIl(FWatchesView);
FreeAndNil(FCallStackView);
FreeAndNil(FLogTreeView);
FreeAndNil(FWatches);
inherited Destroy;
end;
procedure TfrmMessageList.CreateCallStackView;
begin
FCallStack := TCollections.CreateObjectList<TCallStackData>;
FCallStackView := TLogViewerFactories.CreateCallStackView(
Self,
pnlCallStack,
FCallStack as IObjectList,
Manager.Settings.CallStackSettings,
DisplayValuesSettings
);
end;
procedure TfrmMessageList.CreateDataSetView;
begin
FDataSetView := TfrmDataSetView.Create(Self);
AssignFormParent(FDataSetView, tsDataSet);
end;
procedure TfrmMessageList.CreateEditor;
begin
FEditorView := TEditorFactories.CreateView(
pnlTextViewer,
Manager.EditorManager
);
EditorView.Editor.Highlighter.Colors.LoadFromFile('settings.texteditor.json');
EditorView.Settings.EditorOptions.WordWrapEnabled := False; // WordWrap can cause AV's
EditorView.Settings.EditorOptions.ShowRuler := True;
end;
procedure TfrmMessageList.CreateImageView;
begin
FImageView := TfrmImageView.Create(Self);
AssignFormParent(FImageView, tsImageViewer);
end;
{ Creates and initializes the TVirtualStringTree component. }
procedure TfrmMessageList.CreateLogTreeView;
var
C : TVirtualTreeColumn;
B : Boolean;
begin
FLogTreeView := TVirtualStringTreeFactory.CreateTreeList(Self, pnlMessages);
FLogTreeView.AlignWithMargins := False;
FLogTreeView.TreeOptions.AutoOptions := FLogTreeView.TreeOptions.AutoOptions +
[toAutoSpanColumns];
FLogTreeView.TreeOptions.PaintOptions := [
toHotTrack, toPopupMode, toShowBackground, toShowButtons, toShowDropmark,
toStaticBackground, toShowRoot, toThemeAware, toUseBlendedImages,
toUseBlendedSelection, toStaticBackground, toUseExplorerTheme
];
FLogTreeView.NodeDataSize := SizeOf(TLogNode);
FLogTreeView.Images := imlMessageTypes;
FLogTreeView.HintMode := hmTooltip;
FLogTreeView.ShowHint := True;
FLogTreeView.LineMode := lmBands;
FLogTreeView.OnBeforeCellPaint := FLogTreeViewBeforeCellPaint;
FLogTreeView.OnAfterItemPaint := FLogTreeViewAfterItemPaint;
FLogTreeView.OnFocusChanged := FLogTreeViewFocusChanged;
FLogTreeView.OnFocusChanging := FLogTreeViewFocusChanging;
FLogTreeView.OnDblClick := FLogTreeViewDblClick;
FLogTreeView.OnHotChange := FLogTreeViewHotChange;
FLogTreeView.OnInitNode := FLogTreeViewInitNode;
FLogTreeView.OnFreeNode := FLogTreeViewFreeNode;
FLogTreeView.OnGetText := FLogTreeViewGetText;
FLogTreeView.OnPaintText := FLogTreeViewPaintText;
FLogTreeView.OnGetImageIndex := FLogTreeViewGetImageIndex;
FLogTreeView.OnKeyPress := FLogTreeViewKeyPress;
FLogTreeView.OnCollapsed := FLogTreeViewCollapsed;
FLogTreeView.OnExpanded := FLogTreeViewExpanded;
FLogTreeView.OnExpanding := FLogTreeViewExpanding;
FLogTreeView.OnGetHint := FLogTreeViewGetHint;
FLogTreeView.OnGetHintKind := FLogTreeViewGetHintKind;
FLogTreeView.OnGetHintSize := FLogTreeViewGetHintSize;
FLogTreeView.OnDrawHint := FLogTreeViewDrawHint;
B := Supports(Subscriber, IWinIpc) or Supports(Subscriber, IZmq);
C := FLogTreeView.Header.Columns.Add; // logging level
if not B then
C.Options := C.Options - [coVisible];
C.Text := '';
C.Margin := 0;
C.Spacing := 0;
C.Width := 10;
C.MinWidth := 10;
C.MaxWidth := 10;
C := FLogTreeView.Header.Columns.Add; // message type
C.Text := '';
C.Options := C.Options - [coSmartResize, coAutoSpring];
if B then
begin
C.Width := 100;
C.MinWidth := 100;
C.MaxWidth := 2000;
end
else
begin
C.Width := 20;
C.MinWidth := 20;
C.MaxWidth := 40;
end;
C := FLogTreeView.Header.Columns.Add; // name
C.Text := SName;
if not B then
C.Options := C.Options - [coVisible, coSmartResize, coAutoSpring]
else
C.Options := C.Options + [coSmartResize, coAutoSpring];
C.Width := 100;
C.MinWidth := 100;
C.MaxWidth := 2000;
C := FLogTreeView.Header.Columns.Add; // value
C.Text := SValue;
C.Options := C.Options + [coSmartResize, coAutoSpring];
C.Width := 100;
C.MinWidth := 100;
C.MaxWidth := 2000;
C := FLogTreeView.Header.Columns.Add;
C.Text := SType;
if not B then
C.Options := C.Options - [coVisible, coSmartResize, coAutoSpring]
else
C.Options := C.Options + [coSmartResize, coAutoSpring];
C.Width := 70;
C.MinWidth := 75;
C.MaxWidth := 2000;
C := FLogTreeView.Header.Columns.Add; // timestamp
C.Text := STimestamp;
C.MinWidth := 10 * DisplayValuesSettings.TimeStamp.Font.Size;
C.Width := C.MinWidth;
C.MaxWidth := C.MinWidth;
C.Alignment := taRightJustify;
FLogTreeView.Header.AutoSizeIndex := COLUMN_MAIN;
FLogTreeView.Header.Options :=
FLogTreeView.Header.Options + [hoFullRepaintOnResize];
end;
procedure TfrmMessageList.CreateMessageDataView;
begin
FMessageDataView := TfrmMessageDataView.Create(Self, DisplayValuesSettings);
AssignFormParent(FMessageDataView, pnlMessageData);
end;
procedure TfrmMessageList.CreateRawDataView;
begin
FRawDataView := TfrmRawDataView.Create(Self);
AssignFormParent(FRawDataView, tsRawData);
end;
procedure TfrmMessageList.CreateValueListView;
begin
FValueList := TfrmValueListView.Create(Self, DisplayValuesSettings);
AssignFormParent(FValueList, tsValueList);
end;
procedure TfrmMessageList.CreateWatchesView;
begin
FWatches := TWatchList.Create;
FWatchesView := TLogViewerFactories.CreateWatchesView(
Self,
pnlWatches,
FWatches,
Manager.Settings.WatchSettings,
DisplayValuesSettings
);
end;
{$ENDREGION}
{$REGION 'property access methods'}
function TfrmMessageList.GetActions: ILogViewerActions;
begin
Result := Manager as ILogViewerActions;
end;
function TfrmMessageList.GetDisplayValuesSettings: TDisplayValuesSettings;
begin
if Assigned(Manager) and Assigned(Manager.Settings) then
Result := Manager.Settings.DisplayValuesSettings
else
Result := nil;
end;
function TfrmMessageList.GetEditorView: IEditorView;
begin
Result := FEditorView;
end;
function TfrmMessageList.GetForm: TCustomForm;
begin
Result := Self;
end;
function TfrmMessageList.GetIsActiveView: Boolean;
begin
Result := Assigned(Manager.ActiveView)
and (Manager.ActiveView = (Self as ILogViewer));
end;
function TfrmMessageList.GetLeftPanelVisible: Boolean;
begin
Result := pnlMain.PanelCollection[0].Visible;
end;
procedure TfrmMessageList.SetLeftPanelVisible(const Value: Boolean);
begin
if Value <> LeftPanelVisible then
begin
pnlMain.PanelCollection[0].Visible := Value;
UpdateTreeColumns;
end;
end;
function TfrmMessageList.GetManager: ILogViewerManager;
begin
Result := FManager;
end;
function TfrmMessageList.GetMessageCount: Int64;
begin
if Assigned(FSubscriber) then
Result := FSubscriber.MessageCount
else
Result := 0;
end;
function TfrmMessageList.GetSubscriber: ISubscriber;
begin
Result := FSubscriber;
end;
function TfrmMessageList.GetSelectedLogNode: TLogNode;
begin
if Assigned(FLogTreeView) and Assigned(FLogTreeView.FocusedNode)
and FLogTreeView.Selected[FLogTreeView.FocusedNode]
then
begin
Result := FLogTreeView.GetNodeData<TLogNode>(FLogTreeView.FocusedNode);
end
else
begin
Result := nil;
end;
end;
procedure TfrmMessageList.SetSelectedLogNode(const Value: TLogNode);
begin
if Assigned(Value) and Assigned(Value.VTNode) then
begin
if Value <> SelectedLogNode then
begin
FLogTreeView.FocusedNode := Value.VTNode;
FLogTreeView.Selected[Value.VTNode] := True;
FLogTreeView.ScrollIntoView(Value.VTNode, True, True);
end;
// FLogTreeView.Expanded[Value.VTNode] :=
// not FLogTreeView.Expanded[Value.VTNode];
end;
end;
function TfrmMessageList.GetSettings: TMessageListSettings;
begin
Result := FSettings;
end;
{$ENDREGION}
{$REGION 'event handlers'}
{$REGION 'edtMessageFilter'}
procedure TfrmMessageList.edtMessageFilterChange(Sender: TObject);
begin
if edtMessageFilter.Text <> '' then
begin
edtMessageFilter.Font.Style := [fsBold];
edtMessageFilter.Color := clYellow;
end
else
begin
edtMessageFilter.Font.Style := [];
edtMessageFilter.Color := clWhite;
end;
if Settings.AutoFilterMessages then
begin
FUpdate := True;
end;
end;
procedure TfrmMessageList.edtMessageFilterExit(Sender: TObject);
begin
ApplyFilter;
end;
procedure TfrmMessageList.edtMessageFilterKeyDown(Sender: TObject;
var Key: Word; Shift: TShiftState);
var
A : Boolean;
B : Boolean;
C : Boolean;
D : Boolean;
E : Boolean;
F : Boolean;
G : Boolean;
H : Boolean;
begin
{ SHIFT and ALT keycombinations }
A := (ssAlt in Shift) or (ssShift in Shift);
{ Single keys that need to be handled by the edit control like all displayable
characters but also HOME and END }
B := (Key in VK_EDIT_KEYS) and (Shift = []);
{ CTRL keycombinations that need to be handled by the edit control like
CTRL-C for clipboard copy. }
C := (Key in VK_CTRL_EDIT_KEYS) {and (Shift = [ssCtrlOS])};
{ SHIFT-keycombinations that need to be handled by the edit control for
uppercase characters but also eg. SHIFT-HOME for selections. }
D := (Key in VK_SHIFT_EDIT_KEYS) and (Shift = [ssShift]);
{ Only CTRL key is pressed. }
E := (Key = VK_CONTROL) {and (Shift = [ssCtrlOS])};
{ Only SHIFT key is pressed. }
F := (Key = VK_SHIFT) and (Shift = [ssShift]);
{ Only (left) ALT key is pressed. }
G := (Key = VK_MENU) and (Shift = [ssAlt]);
{ ESCAPE }
H := Key = VK_ESCAPE;
if not (A or B or C or D or E or F or G or H) then
begin
FVKPressed := True;
Key := 0;
end
{ Prevents jumping to the application's main menu which happens by default
if ALT is pressed. }
else if G then
begin
Key := 0;
end;
end;
procedure TfrmMessageList.edtMessageFilterKeyUp(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if FVKPressed and FLogTreeView.Enabled then
begin
FLogTreeView.Perform(WM_KEYDOWN, Key, 0);
if Visible and FLogTreeView.CanFocus then
FLogTreeView.SetFocus;
end;
FVKPressed := False;
end;
procedure TfrmMessageList.edtMessageFilterMouseEnter(Sender: TObject);
begin
if not edtMessageFilter.Focused then
edtMessageFilter.Color := clYellow;
end;
procedure TfrmMessageList.edtMessageFilterMouseLeave(Sender: TObject);
begin
if not edtMessageFilter.Focused then
edtMessageFilter.Color := clWhite;
end;
{$ENDREGION}
{$REGION 'FLogTreeView'}
{ Do not show Enter and Leave nodes when collapsed. }
procedure TfrmMessageList.FLogTreeViewCollapsed(Sender: TBaseVirtualTree;
Node: PVirtualNode);
var
LN : TLogNode;
begin
LN := Sender.GetNodeData<TLogNode>(Node);
if Assigned(LN.VTNode.NextSibling) then
begin
Sender.IsVisible[LN.VTNode.NextSibling] := False;
end
end;
procedure TfrmMessageList.FLogTreeViewDblClick(Sender: TObject);
begin
UpdateTreeColumns;
AutoFitColumns;
end;
procedure TfrmMessageList.FLogTreeViewDrawHint(Sender: TBaseVirtualTree;
HintCanvas: TCanvas; Node: PVirtualNode; R: TRect; Column: TColumnIndex);
begin
//
end;
{ Show both Enter and Leave nodes when expanded. }
procedure TfrmMessageList.FLogTreeViewExpanded(Sender: TBaseVirtualTree;
Node: PVirtualNode);
var
LN : TLogNode;
begin
LN := Sender.GetNodeData<TLogNode>(Node);
if Assigned(LN.VTNode.NextSibling) then
begin
Sender.IsVisible[LN.VTNode.NextSibling] := True;
end
end;
procedure TfrmMessageList.FLogTreeViewExpanding(Sender: TBaseVirtualTree;
Node: PVirtualNode; var Allowed: Boolean);
begin
Allowed := True;
end;
{ Draws custom focus rectangle. }
procedure TfrmMessageList.FLogTreeViewAfterItemPaint(Sender: TBaseVirtualTree;
TargetCanvas: TCanvas; Node: PVirtualNode; ItemRect: TRect);
begin
if FLogTreeView.FocusedNode = Node then
begin
TargetCanvas.Pen.Color := clBlue;
TargetCanvas.Pen.Width := 2;
ItemRect.Inflate(-1, -1);
TargetCanvas.MoveTo(ItemRect.Left, ItemRect.Top);
TargetCanvas.LineTo(ItemRect.Right, ItemRect.Top);
TargetCanvas.MoveTo(ItemRect.Left, ItemRect.Top);
TargetCanvas.LineTo(ItemRect.Left, ItemRect.Bottom);
TargetCanvas.MoveTo(ItemRect.Left, ItemRect.Bottom);
TargetCanvas.LineTo(ItemRect.Right, ItemRect.Bottom);
TargetCanvas.MoveTo(ItemRect.Right, ItemRect.Top);
TargetCanvas.LineTo(ItemRect.Right, ItemRect.Bottom);
end;
end;
{ This handler takes care of the following things:
- Coloring the loglevel column background color.
- Drawing collapsed tracing nodes as one node (using IsCollapsedTracingNode). }
procedure TfrmMessageList.FLogTreeViewBeforeCellPaint(Sender: TBaseVirtualTree;
TargetCanvas: TCanvas; Node: PVirtualNode; Column: TColumnIndex;
CellPaintMode: TVTCellPaintMode; CellRect: TRect; var ContentRect: TRect);
var
LN : TLogNode;
DVS : TDisplayValuesSettings;
LIndent : Integer;
LRect : TRect;
LNode : PVirtualNode;
begin
LN := Sender.GetNodeData<TLogNode>(Node);
DVS := Manager.Settings.DisplayValuesSettings;
if (LN.MessageType in TracingMessages)
and ((Column = COLUMN_MAIN) or (Column = COLUMN_TIMESTAMP)) then
begin
DVS.Tracing.AssignTo(TargetCanvas);
TargetCanvas.FillRect(CellRect);
if IsCollapsedTracingNode(Sender, Node) then
begin
Sender.IsVisible[Node.NextSibling] := False;
end;
end;
if Column = COLUMN_LEVEL then
begin
Manager.Settings.LogLevelSettings.LogLevels[LN.LogLevel].Color;
TargetCanvas.FillRect(CellRect);
end
else if Column = COLUMN_VALUE then
begin
DVS.Value.AssignTo(TargetCanvas);
TargetCanvas.FillRect(CellRect);
end
else if Column = COLUMN_VALUENAME then
begin
DVS.ValueName.AssignTo(TargetCanvas);
TargetCanvas.FillRect(CellRect);
end
else if Column = COLUMN_VALUETYPE then
begin
DVS.ValueType.AssignTo(TargetCanvas);
TargetCanvas.FillRect(CellRect);
end
else if Column = COLUMN_TIMESTAMP then
begin
DVS.TimeStamp.AssignTo(TargetCanvas);
TargetCanvas.FillRect(CellRect);
end;
if Column = Sender.Header.MainColumn then
begin
// draw indentation background
LIndent := Sender.GetNodeLevel(Node) * FLogTreeView.Indent;
LRect := CellRect;
Inc(LRect.Left, LIndent);
LIndent := -Integer(FLogTreeView.Indent);
LRect.Right := LRect.Left + Integer(FLogTreeView.Indent);
Inc(LRect.Bottom);
LNode := Node;
repeat
TargetCanvas.Brush.Color := DVS.Tracing.BackgroundColor;
TargetCanvas.FillRect(LRect);
LNode := LNode.Parent;
if not Assigned(LNode) or (LNode = Sender.RootNode) then
Break;
Inc(LRect.Left, LIndent);
Inc(LRect.Right, LIndent);
until False;
if LN.MessageType in NotificationMessages then
begin