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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Table.Model;
interface
uses
Boolean,
Code.Expression,
Collection.List,
Geometry._2d.Integer32.Point,
Geometry._2d.Integer32.Rectangle,
Geometry._2d.Integer32.Size,
Integer._32,
Integer._32.Interval.List.OrderedDisjoint,
Listeners,
Object_.ReferenceCounted,
Table.Cells,
Table.EventGate,
Table.Header.Identifier,
Table.Header.Model,
Table.Row.Comparator,
Table.Row.Ordering.Column,
Table.Row.Projector,
Text,
Value,
Value.Path;
type
TTableModelQuery = class(TObject)
public
Rows: TInteger32OrderedDisjointIntervalList;
Columns: TInteger32OrderedDisjointIntervalList;
function GetSize(): TInteger32Size;
end;
TTableModelQueryResult = class(TObject)
public
Cells: TTableCells;
destructor Destroy(); override;
end;
TTableModel = class(TReferenceCountedObject)
private
FPath: TValuePath;
procedure SetPath(const Value: TValuePath);
protected
FListeners: TListeners;
FEventGate: TEventGate;
procedure TriggerCellsChangedEvent(const Cells: TInteger32Rectangle);
procedure TriggerChangedEvent();
function RetrieveThroughGetCells(Query: TTableModelQuery): TTableModelQueryResult;
function TextToValue(const Position: TInteger32Point; const Value: TText): TValue; virtual; deprecated;
public
constructor Create(); override;
destructor Destroy(); override;
function GetColumnModel(): TTableHeaderModel; virtual; abstract; // Should not change during lifetime of the TTableModel, convert to property?
function GetRowModel(): TTableHeaderModel; virtual; abstract; // Should not change during lifetime of the TTableModel, convert to property?
function GetCells(const Bounds: TInteger32Rectangle): TTableCells; virtual; abstract;
procedure SetValueForCells(const Bounds: TInteger32Rectangle; const Value: TValue); virtual; // TODO: This should be changed so we can provide multiple changed values for different cells at once
procedure ClearValuesForCells(const Bounds: TInteger32Rectangle); virtual;
function GetRows(Identifiers: TList<TTableHeaderIdentifier>): TTableCells; virtual;
function Retrieve(Query: TTableModelQuery): TTableModelQueryResult; virtual;
function SupportsRowSorting(): TBoolean; virtual;
function CreateRowSortingTableModel(): TTableModel; virtual;
function SupportsColumnSorting(): TBoolean; virtual;
procedure SortRows(Columns: TSortColumns); virtual;
function CreateRowComparator(Columns: TSortColumns): TTableRowComparator; virtual;
function CreateRowProjector(Columns: array of TInteger32): TTableRowProjector; virtual;
function SupportsRowFiltering(): TBoolean; virtual;
function CreateRowFilteringTableModel(): TTableModel; virtual;
procedure FilterRows(Expression: TExpression); virtual;
function CreateRowGroupingTableModel(Grouping: TObject): TTableModel; virtual; // TODO: Grouping should be a TTableRowGrouping instead but this would introduce a circular unit reference
procedure InsertTabDelimited(Lines: TList<TText>); virtual; deprecated;
function GetEventGate(): TEventGate; virtual;
function GetSize(): TInteger32Size;
procedure Refresh(); virtual;
procedure Save(); virtual;
function Copy(): TTableModel; virtual;
function Embellish(): TTableModel; virtual;
function EmbellishedModel(): TTableModel; virtual;
property Path: TValuePath read FPath write SetPath;
property Listeners: TListeners read FListeners;
end;
implementation
uses
Exception,
Exception.NotImplemented,
Integer._32.Interval,
Table.Model.Event,
Table.Model.RowFiltering,
Table.Model.RowGrouping,
Table.Model.RowSorting,
Table.Row.Comparator.Generic,
Table.Row.Grouping,
Table.Row.Projector.Generic,
Text.Value;
{ TTableModel }
procedure TTableModel.ClearValuesForCells(const Bounds: TInteger32Rectangle);
begin
end;
function TTableModel.Copy(): TTableModel;
begin
raise EException.Create(ClassName + '.Copy() not implemented');
end;
constructor TTableModel.Create();
begin
inherited Create();
FListeners := TListeners.Create();
FEventGate := TEventGate.Create();
Listeners.AddReference();
end;
function TTableModel.CreateRowComparator(Columns: TSortColumns): TTableRowComparator;
begin
Result := TGenericTableRowComparator.Create(Self, Columns);
end;
function TTableModel.CreateRowFilteringTableModel(): TTableModel;
var
RowFilteringTableModel: TRowFilteringTableModel;
begin
RowFilteringTableModel := TRowFilteringTableModel.Create();
RowFilteringTableModel.ModelToFilter := Self;
Result := RowFilteringTableModel;
end;
function TTableModel.CreateRowGroupingTableModel(Grouping: TObject): TTableModel;
begin
Result := TRowGroupingTableModel.Create(Grouping as TTableRowGrouping);
end;
function TTableModel.CreateRowProjector(Columns: array of TInteger32): TTableRowProjector;
begin
Result := TGenericTableRowProjector.Create(Self, Columns);
end;
function TTableModel.CreateRowSortingTableModel(): TTableModel;
var
RowSortingTableModel: TRowSortingTableModel;
begin
RowSortingTableModel := TRowSortingTableModel.Create();
RowSortingTableModel.ModelToSort := Self;
Result := RowSortingTableModel;
end;
destructor TTableModel.Destroy();
begin
Listeners.ReleaseReference();
Path.ReleaseReference();
FEventGate.Free();
inherited Destroy();
end;
function TTableModel.Embellish(): TTableModel;
begin
Result := Self;
if not Result.SupportsRowFiltering then
Result := Result.CreateRowFilteringTableModel();
if not Result.SupportsRowSorting then
Result := Result.CreateRowSortingTableModel();
end;
function TTableModel.EmbellishedModel(): TTableModel;
begin
Result := Self;
end;
procedure TTableModel.FilterRows(Expression: TExpression);
begin
end;
function TTableModel.GetSize(): TInteger32Size;
begin
Result := TInteger32Size.New(GetColumnModel().GetCount(), GetRowModel().GetCount());
end;
function TTableModel.GetEventGate(): TEventGate;
begin
Result := FEventGate;
end;
function TTableModel.GetRows(Identifiers: TList<TTableHeaderIdentifier>): TTableCells;
begin
raise ENotImplemented.Create(ClassType, 'GetRows');
end;
procedure TTableModel.InsertTabDelimited(Lines: TList<TText>);
var
Row: TInteger32;
Column: TInteger32;
Line: TText;
Cell: TText;
RowModel: TTableHeaderModel;
Value: TValue;
Position: TInteger32Point;
begin
RowModel := GetRowModel();
for Line in Lines do
begin
Row := RowModel.Insert(RowModel.GetCount());
Column := 0;
while Line <> '' do
begin
Position := TInteger32Point.New(Column, Row);
Cell := Line.Parse(#9);
Value := TextToValue(Position, Cell);
Value.AddReference();
SetValueForCells(Position, Value);
Value.ReleaseReference();
Inc(Column);
end;
end;
end;
procedure TTableModel.Refresh();
begin
TriggerChangedEvent();
end;
function TTableModel.Retrieve(Query: TTableModelQuery): TTableModelQueryResult;
begin
Result := RetrieveThroughGetCells(Query);
end;
function TTableModel.RetrieveThroughGetCells(Query: TTableModelQuery): TTableModelQueryResult;
var
Cells: TTableCells;
RowRangeIndex: TInteger32;
RowRange: TInteger32Interval;
ColumnRangeIndex: TInteger32;
ColumnRange: TInteger32Interval;
Block: TTableCells;
Target: TInteger32Point;
begin
Cells := TTableCells.Create();
Cells.Bounds := Query.GetSize();
Target := TInteger32Point.New(0, 0);
for RowRangeIndex := 0 to Query.Rows.Count - 1 do
begin
RowRange := Query.Rows[RowRangeIndex];
Target.X := 0;
for ColumnRangeIndex := 0 to Query.Columns.Count - 1 do
begin
ColumnRange := Query.Columns[ColumnRangeIndex];
Block := GetCells(TInteger32Rectangle.New(ColumnRange, RowRange));
Cells.MoveValuesFrom(Target, Block, TInteger32Point.New(0, 0));
Block.Free();
Inc(Target.X, ColumnRange.Size);
end;
Inc(Target.Y, RowRange.Size);
end;
Result := TTableModelQueryResult.Create();
Result.Cells := Cells;
end;
procedure TTableModel.Save();
begin
end;
procedure TTableModel.SetPath(const Value: TValuePath);
begin
if Value <> Path then
begin
Value.AddReference();
Path.ReleaseReference();
FPath := Value;
end;
end;
procedure TTableModel.SetValueForCells(const Bounds: TInteger32Rectangle; const Value: TValue);
begin
end;
procedure TTableModel.SortRows(Columns: TSortColumns);
begin
end;
function TTableModel.SupportsColumnSorting(): TBoolean;
begin
Result := False;
end;
function TTableModel.SupportsRowFiltering(): TBoolean;
begin
Result := False;
end;
function TTableModel.SupportsRowSorting(): TBoolean;
begin
Result := False;
end;
function TTableModel.TextToValue(const Position: TInteger32Point; const Value: TText): TValue;
begin
Result := TTextValue.Create(Value);
end;
procedure TTableModel.TriggerCellsChangedEvent(const Cells: TInteger32Rectangle);
begin
if GetEventGate().Enabled then
Listeners.DistributeEvent(TTableModelCellsChangedEvent.Create(Self, Cells));
end;
procedure TTableModel.TriggerChangedEvent();
begin
if GetEventGate().Enabled then
Listeners.DistributeEvent(TTableModelChangedEvent.Create(Self));
end;
{ TTableModelQueryResult }
destructor TTableModelQueryResult.Destroy();
begin
Cells.Free();
inherited Destroy();
end;
{ TTableModelQuery }
function TTableModelQuery.GetSize(): TInteger32Size;
begin
Result := TInteger32Size.New(Columns.GetTotalSize(), Rows.GetTotalSize());
end;
end.
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