fpspreadsheet: Collapsable/expandable items in TsSpreadsheetInspector

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@4165 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/fpspreadsheet/examples/visual/fpsctrls/main.lfm

@@ -71,6 +71,7 @@ object MainForm: TMainForm
       Top = 23
       Width = 277
       Align = alClient
+      DefaultColWidth = 125
       MouseWheelOption = mwGrid
       RowCount = 30
       TabOrder = 1
@@ -114,10 +115,7 @@ object MainForm: TMainForm
       )
       WorkbookSource = WorkbookSource
       Mode = imWorkbook
-      ColWidths = (
-        114
-        114
-      )
+      ExtendedColSizing = True
     end
   end
   object InspectorSplitter: TSplitter

components/fpspreadsheet/fpspreadsheetctrls.pas

@@ -395,6 +395,10 @@ type
     can be assigned to a tab of a TabControl. }
   TsInspectorMode = (imWorkbook, imWorksheet, imCellValue, imCellProperties);
 
+  {@@ Inspector expanded nodes }
+  TsInspectorExpandedNode = (ienFormatSettings, ienPageLayout);
+  TsInspectorExpandedNodes = set of TsInspectorExpandedNode;
+
   {@@ TsSpreadsheetInspector displays all properties of a workbook, worksheet,
     cell content and cell formatting in a way similar to the Object Inspector
     of Lazarus. }
@@ -402,11 +406,14 @@ type
   private
     FWorkbookSource: TsWorkbookSource;
     FMode: TsInspectorMode;
+    FExpanded: TsInspectorExpandedNodes;
     function GetWorkbook: TsWorkbook;
     function GetWorksheet: TsWorksheet;
+    procedure SetExpanded(AValue: TsInspectorExpandedNodes);
     procedure SetMode(AValue: TsInspectorMode);
     procedure SetWorkbookSource(AValue: TsWorkbookSource);
   protected
+    procedure DblClick; override;
     procedure DoUpdate; virtual;
     procedure Notification(AComponent: TComponent; Operation: TOperation); override;
     procedure UpdateCellValue(ACell: PCell; AStrings: TStrings); virtual;
@@ -432,6 +439,9 @@ type
     {@@ inherited from TValueListEditor, activates column titles and automatic
       column width adjustment by default }
     property DisplayOptions default [doColumnTitles, doAutoColResize];
+    {@@ Displays subproperties }
+    property ExpandedNodes: TsInspectorExpandedNodes
+      read FExpanded write SetExpanded default [ienFormatSettings, ienPageLayout];
     {@@ inherited from TValueListEditor. Turns of the fixed column by default}
     property FixedCols default 0;
     {@@ inherited from TStringGrid, but not published in TValueListEditor. }
@@ -2457,6 +2467,7 @@ begin
   inherited Create(AOwner);
   DisplayOptions := DisplayOptions - [doKeyColFixed];
   FixedCols := 0;
+  FExpanded := [ienFormatSettings, ienPageLayout];
   with (TitleCaptions as TStringList) do begin
     OnChange := nil;        // This fixes an issue with Laz 1.0
     Clear;
@@ -2476,6 +2487,32 @@ begin
   inherited Destroy;
 end;
 
+{@@ ----------------------------------------------------------------------------
+  Double-click on an expandable line expands or collapsed the sub-items
+-------------------------------------------------------------------------------}
+procedure TsSpreadsheetInspector.DblClick;
+var
+  s: String;
+  expNodes: TsInspectorExpandedNodes;
+begin
+  expNodes := FExpanded;
+  s := Cells[0, Row];
+  if (pos('FormatSettings', s) > 0) or (pos('Format settings', s) > 0) then
+  begin
+    if (ienFormatSettings in expNodes)
+      then Exclude(expNodes, ienFormatSettings)
+      else Include(expNodes, ienFormatSettings);
+  end else
+  if (pos('Page layout', s) > 0) or (pos('PageLayout', s) > 0) then
+  begin
+    if (ienPageLayout in expNodes)
+      then Exclude(expNodes, ienPageLayout)
+      else Include(expNodes, ienPageLayout);
+  end else
+    exit;
+  SetExpanded(expNodes);
+end;
+
 {@@ ----------------------------------------------------------------------------
   Updates the data shown by the inspector grid. Display depends on the FMode
   setting (workbook, worksheet, cell values, cell properties).
@@ -2580,6 +2617,17 @@ begin
   SetWorkbookSource(nil);
 end;
 
+{@@ ----------------------------------------------------------------------------
+  Setter method for the Expanded property
+-------------------------------------------------------------------------------}
+procedure TsSpreadsheetInspector.SetExpanded(AValue: TsInspectorExpandedNodes);
+begin
+  if AValue = FExpanded then
+    exit;
+  FExpanded := AValue;
+  DoUpdate;
+end;
+
 {@@ ----------------------------------------------------------------------------
   Setter method for the Mode property. This property filters groups of properties
   for display (workbook-, worksheet-, cell value- or cell formatting-related
@@ -2835,7 +2883,8 @@ begin
     if s <> '' then Delete(s, 1, 2);
     AStrings.Add('Options='+s);
 
-    AStrings.Add('FormatSettings=');
+    if (ienFormatSettings in FExpanded) then begin
+      AStrings.Add('(-) FormatSettings=');
       AStrings.Add('  ThousandSeparator='+AWorkbook.FormatSettings.ThousandSeparator);
       AStrings.Add('  DecimalSeparator='+AWorkbook.FormatSettings.DecimalSeparator);
       AStrings.Add('  ListSeparator='+AWorkbook.FormatSettings.ListSeparator);
@@ -2867,6 +2916,8 @@ begin
       AStrings.Add('  PosCurrencyFormat='+IntToStr(AWorkbook.FormatSettings.CurrencyFormat));
       AStrings.Add('  NegCurrencyFormat='+IntToStr(AWorkbook.FormatSettings.NegCurrFormat));
       AStrings.Add('  TwoDigitYearCenturyWindow='+IntToStr(AWorkbook.FormatSettings.TwoDigitYearCenturyWindow));
+    end else
+      AStrings.Add('(+) FormatSettings=(dblclick for more...)');
 
     for i:=0 to AWorkbook.GetFontCount-1 do
       AStrings.Add(Format('Font%d=%s', [i, AWorkbook.GetFontAsString(i)]));
@@ -2912,7 +2963,9 @@ begin
     AStrings.Add(Format('Comments=%d items', [ASheet.Comments.Count]));
     AStrings.Add(Format('Hyperlinks=%d items', [ASheet.Hyperlinks.Count]));
     AStrings.Add(Format('MergedCells=%d items', [ASheet.MergedCells.Count]));
-    AStrings.Add('Page layout=');
+    if ienPageLayout in FExpanded then
+    begin
+      AStrings.Add('(+) Page layout=');
       AStrings.Add(Format('  Orientation=%s', [GetEnumName(TypeInfo(TsPageOrientation), ord(ASheet.PageLayout.Orientation))]));
       AStrings.Add(Format('  Page width=%.1f mm', [ASheet.PageLayout.PageWidth]));
       AStrings.Add(Format('  Page height=%.1f mm', [ASheet.PageLayout.PageHeight]));
@@ -2946,6 +2999,8 @@ begin
         if po in ASheet.PageLayout.Options then s := s + '; ' + GetEnumName(typeInfo(TsPrintOption), ord(po));
       if s <> '' then Delete(s, 1, 2);
       AStrings.Add(Format('  Options=%s', [s]));
+    end else
+      AStrings.Add('(+) Page layout=(dblclick for more...)');
   end;
 end;