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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 WebSite.Table.Module;
interface
uses
Authorization.Level,
Boolean,
Character.Encoding,
DataMethod,
Dom.Element,
Html.Element,
Html.Element.Block,
Html.Element.Block.Form,
Http.Response,
StructuredDocument.Node,
StructuredDocument.Node.Localize,
Table.Cells,
Table.Row,
Text,
Uri,
WebSite.Module,
WebSite.Request,
WebSite.Request.Handler,
WebSite.Request.Handler.Default,
WebSite.Table,
WebSite.Table.Cursor,
WebSite.Table.Session;
type
TTableWebSiteRequestHandler = class(TDefaultWebSiteRequestHandler)
private
FTitle: TDocumentNode;
procedure SetTitle(const Value: TDocumentNode);
public
OwnsTable: TBoolean;
Table: TWebSiteTable;
Name: TText;
destructor Destroy(); override;
function GetTitle(): TDocumentNode; override;
property Title: TDocumentNode read GetTitle write SetTitle;
end;
TRootTableRequestHandler = class(TTableWebSiteRequestHandler)
protected
procedure ConfigureHandler(Handler: TWebSiteRequestHandler);
function CreateInsertRequestHandler(): TDefaultWebSiteRequestHandler;
public
function HandleRequest(): THttpResponse; override;
function GetChildHandler(const Segment: TText; ResourceType: TUriResourceType): TWebSiteRequestHandler; override;
end;
TRenderTableToHtmlRequestHandler = class(TTableWebSiteRequestHandler)
private
function RenderVisitedDivision(): THtmlDivision;
function CreateToggleIcon(Action: TText; Title: TDocumentLocalize): THtmlDivision;
function CreateToggleButton(Caption: TDocumentLocalize; Action: TText): THtmlInput;
protected
function RenderMenu(Session: TWebSiteTableSession; const TableUri: TUri): THtmlElement;
function RenderUpdateMethods(AllowedMethods: TUpdateMethods): THtmlDivision;
function RenderCursor(Cursor: TWebSiteTableCursor): THtmlDivision;
function RenderToolbar(Session: TWebSiteTableSession; const TableUri: TUri): THtmlElement;
public
function HandleRequest(): THttpResponse; override;
end;
TRenderTableToCsvRequestHandler = class(TTableWebSiteRequestHandler)
protected
function RenderToCsv(WebSiteTable: TWebSiteTable; Session: TWebSiteTableSession; Encoding: TCharacterEncoding): TText;
public
function HandleRequest(): THttpResponse; override;
end;
THandleXmlRequestHandler = class(TTableWebSiteRequestHandler)
protected
function HandleCommand(Session: TWebSiteTableSession; Element: TDomElement): TRenderScope;
function HandleCommandsRequest(Table: TWebSiteTable; Session: TWebSiteTableSession; Element: TDomElement): THttpResponse;
function HandleRenderRequest(Table: TWebSiteTable; Session: TWebSiteTableSession; RequestElement: TDomElement): THttpResponse;
public
function HandleRequest(): THttpResponse; override;
end;
TFormFieldRequestHandler = class(TTableWebSiteRequestHandler)
protected
function RowWithIdentifier(Table: TWebSiteTable; Cells: TTableCells; Identifier: TText): TTableRow;
public
function HandleRequest(): THttpResponse; override;
end;
TTableWebSiteModule = class(TWebSiteModule)
protected
FName: TText;
public
Table: TWebSiteTable;
constructor Create(const Name: TText; Table: TWebSiteTable); reintroduce; virtual;
destructor Destroy(); override;
function GetName(): TText; override;
function GetTitle(Request: TWebSiteRequest): TDocumentNode; override;
function GetMinimumAuthorizationLevel(Request: TWebSiteRequest): TAuthorizationLevel; override;
function CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler; override;
function CreateRootHandler(Request: TWebSiteRequest): TDefaultWebSiteRequestHandler;
function CreateHtmlRequestHandler(Request: TWebSiteRequest): TDefaultWebSiteRequestHandler;
end;
implementation
uses
Currency.Format.Text,
Dom.Writer,
Exception,
Geometry._2d.Integer32.Rectangle,
Html,
Html.Element.Inline_,
Http.ContentDisposition,
Http.Response.Html,
Http.Response.Text,
Http.Status,
Integer._32,
Integer._32.Interval,
Integer._32.TextFormat,
Internet.MediaType.Application,
Internet.MediaType.Text,
Iterator,
Javascript,
Language.TranslationMap.Constants,
Language.TranslationMap.Constants.General,
Stream.Input,
Stream.Output,
Table.Header,
Table.Header.Identifier,
Table.Model,
Text.Collation,
WebSite.Form,
WebSite.Form.Field,
WebSite.Form.Field.Factory,
WebSite.Form.Language.TranslationMap,
WebSite.Form.RequestHandler,
WebSite.Form.Update,
WebSite.Language.TranslationMap,
WebSite.Menu.Control,
WebSite.Menu.Item,
WebSite.Request.Handler.BadRequest,
WebSite.Request.Handler.NotFound,
WebSite.Request.Handler.Status,
WebSite.Session,
WebSite.Table.Renderer.Csv,
WebSite.Table.Renderer.Html,
Xml;
type
TInsertFormRequestHandler = class(TFormRequestHandler)
public
Form: TUpdateForm;
destructor Destroy(); override;
function GetForm(): TForm; override;
end;
{ TInsertFormRequestHandler }
destructor TInsertFormRequestHandler.Destroy();
begin
Form.Free();
inherited Destroy();
end;
function TInsertFormRequestHandler.GetForm(): TForm;
begin
Result := Form;
end;
{ TTableWebSiteModule }
constructor TTableWebSiteModule.Create(const Name: TText; Table: TWebSiteTable);
begin
inherited Create();
FName := Name;
Self.Table := Table;
end;
function TTableWebSiteModule.CreateHtmlRequestHandler(Request: TWebSiteRequest): TDefaultWebSiteRequestHandler;
var
Handler: TTableWebSiteRequestHandler;
begin
Handler := TRenderTableToHtmlRequestHandler.Create(Request);
Handler.Table := Table;
Handler.Name := GetName();
Result := Handler;
end;
function TTableWebSiteModule.CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler;
begin
Result := CreateChildHandlers(Request, CreateRootHandler(Request));
end;
function TTableWebSiteModule.CreateRootHandler(Request: TWebSiteRequest): TDefaultWebSiteRequestHandler;
var
Handler: TRootTableRequestHandler;
begin
Handler := TRootTableRequestHandler.Create(Request);
Handler.Table := Table;
Handler.Name := GetName();
Result := Handler;
end;
destructor TTableWebSiteModule.Destroy();
begin
Table.Free();
inherited Destroy();
end;
function TTableWebSiteModule.GetMinimumAuthorizationLevel(Request: TWebSiteRequest): TAuthorizationLevel;
begin
Result := TAuthorizationLevel.Public_;
end;
function TTableWebSiteModule.GetName(): TText;
begin
Result := FName;
end;
function TTableWebSiteModule.GetTitle(Request: TWebSiteRequest): TDocumentNode;
begin
Result := tmTable;
end;
{ TRenderTableToHtmlRequestHandler }
function TRenderTableToHtmlRequestHandler.CreateToggleButton(Caption: TDocumentLocalize; Action: TText): THtmlInput;
begin
Result := THtmlInput.Create(THtmlInputType.Button);
Result.Value := Request.Translator.Translate(Caption);
Result.Classes.Add(Action);
end;
function TRenderTableToHtmlRequestHandler.CreateToggleIcon(Action: TText; Title: TDocumentLocalize): THtmlDivision;
begin
Result := THtmlDivision.Create();
Result.Classes.Add(Action);
Result.Title := Request.Translator.Translate(Title);
end;
function TRenderTableToHtmlRequestHandler.HandleRequest(): THttpResponse;
var
Session: TWebSiteTableSession;
Renderer: TTableModelToHtmlRenderer;
Element: THtmlElement;
Division: THtmlDivision;
Contents: THtmlDivision;
TableUri: TUri;
Response: THttpHtmlResponse;
FieldNameProducer: TTableFieldNameProducer;
begin
Session := Table.GetSession(Request);
TableUri := Request.UriProducer.RelativeUri([], TUriResourceType.File_);
FieldNameProducer := TTableFieldNameProducer.Create(Name);
Renderer := TTableModelToHtmlRenderer.Create(Request, FieldNameProducer, Name, Table, Session, rsTable);
Element := Renderer.Render();
Renderer.Free();
FieldNameProducer.Free();
Division := THtmlDivision.Create();
Division.DataSet.AddRequired('uri', TableUri);
Division.DataSet.AddRequired('filter-enabled', JavascriptBoolean(Session.ShowFilter));
Division.DataSet.AddRequired('filter-text', Session.GlobalFilterText);
Division.DataSet.AddRequired('enabled-update-methods', DataMethodsToText(Session.EnabledOperations, ','));
Division.DataSet.AddRequired('row-selector-enabled', JavascriptBoolean((Request.Session.InteractionMode = TInteractionMode.Normal) and ((Table.SelectorMode = smSelect) or ((Table.SelectorMode = smDelete) and (TDataMethod.Delete in Session.AllowedOperations)))));
Division.Classes.Add('table');
Division.Classes.Add('hasMenu');
if Session.Model.GetSize().Height = 0 then
Division.Classes.Add('Empty');
Division.Contents.Add(RenderToolbar(Session, TableUri));
Contents := THtmlDivision.Create();
Contents.Classes.Add('Contents');
Contents.Contents.Add(Element);
Division.Contents.Add(Contents);
if Table.RowUriProducer <> nil then
Division.Contents.Add(RenderVisitedDivision());
Response := THttpHtmlResponse.Create();
Response.Element := Division;
Result := Response;
Table.ReturnSession(Request, Session);
end;
function TRenderTableToHtmlRequestHandler.RenderVisitedDivision(): THtmlDivision;
var
LastVisited: THtmlInput;
begin
LastVisited := Html.HiddenField('LastVisited', '');
LastVisited.Classes.Add('LastVisited');
Result := Html.DivisionWithClass('VisitedData', [ LastVisited]);
end;
function TRenderTableToHtmlRequestHandler.RenderCursor(Cursor: TWebSiteTableCursor): THtmlDivision;
var
ActiveButton: THtmlInput;
PreviousPageButton: THtmlInput;
CurrentPageButton: THtmlInput;
NextPageButton: THtmlInput;
Window: TInteger32Rectangle;
begin
Result := THtmlDivision.Create();
Result.Classes.Add('Cursor');
PreviousPageButton := THtmlInput.Create(THtmlInputType.Button);
PreviousPageButton.Classes.Add('PreviousPage');
PreviousPageButton.Title := Request.Translator.Translate(tmPrevious);
NextPageButton := THtmlInput.Create(THtmlInputType.Button);
NextPageButton.Classes.Add('NextPage');
NextPageButton.Title := Request.Translator.Translate(tmNext);
Window := Cursor.GetVisibleWindow();
CurrentPageButton := THtmlInput.Create(THtmlInputType.Button);
CurrentPageButton.Classes.Add('CurrentPage');
CurrentPageButton.Value := Integer32ToText(Window.Top + 1) + '-' + Integer32ToText(Window.Bottom + 1);
ActiveButton := THtmlInput.Create(THtmlInputType.Button);
ActiveButton.Classes.Add('Active');
ActiveButton.Value := Integer32ToText(Cursor.Size.Height);
Result.Contents.Add(PreviousPageButton);
Result.Contents.Add(NextPageButton);
Result.Contents.Add(CurrentPageButton);
Result.Contents.Add(ActiveButton);
end;
function TRenderTableToHtmlRequestHandler.RenderMenu(Session: TWebSiteTableSession; const TableUri: TUri): THtmlElement;
var
Menu: TMenuItem;
ContainerMenu: TMenuItem;
DownloadAs: TMenuItem;
CsvUri: TUri;
Csv_Default: TMenuItem;
Csv_Nl: TMenuItem;
Csv_Nl_Uri: TUri;
CsvReferencesAsLabels: TMenuItem;
CsvReferencesAsKeys: TMenuItem;
MenuControl: TWebSiteMenuControl;
begin
CsvUri := TableUri.AddParameter('format', 'CSV');
CsvReferencesAsKeys := TMenuItem.Create();
CsvReferencesAsKeys.Caption := tmReferencesAsKeys;
CsvReferencesAsKeys.Target := CsvUri.AddParameter('referenceMode', 'keys');
CsvReferencesAsLabels := TMenuItem.Create();
CsvReferencesAsLabels.Caption := tmReferencesAsLabels;
CsvReferencesAsLabels.Target := CsvUri.AddParameter('referenceMode', 'labels');
Csv_Default := TMenuItem.Create();
Csv_Default.Caption := tmCsv_Default;
Csv_Default.ChildItems.Add(CsvReferencesAsKeys);
Csv_Default.ChildItems.Add(CsvReferencesAsLabels);
Csv_Nl_Uri := CsvUri;
Csv_Nl_Uri.Parameters.Add('referenceMode', 'labels');
Csv_Nl_Uri.Parameters.Add('region', 'nl');
Csv_Nl := TMenuItem.Create();
Csv_Nl.Caption := tmCsv_Nl;
Csv_Nl.Target := Csv_Nl_Uri;
DownloadAs := TMenuItem.Create();
DownloadAs.Classes.Add('Download');
DownloadAs.Caption := tmDownloadAs;
DownloadAs.ChildItems.Add(Csv_Default);
DownloadAs.ChildItems.Add(Csv_Nl);
Menu := TMenuItem.Create();
Menu.ChildItems.Add(DownloadAs);
ContainerMenu := TMenuItem.Create();
ContainerMenu.ChildItems.Add(Menu);
MenuControl := TWebSiteMenuControl.Create(ContainerMenu);
Result := MenuControl.Render(Request.Translator, Request.Session.MenuItems);
ContainerMenu.Free();
MenuControl.Free();
end;
function TRenderTableToHtmlRequestHandler.RenderToolbar(Session: TWebSiteTableSession; const TableUri: TUri): THtmlElement;
var
Toolbar: THtmlDivision;
Actions: THtmlDivision;
OverviewUri: TUri;
ManageLink: THtmlAnchor;
begin
Toolbar := THtmlDivision.Create();
Toolbar.Classes.Add('Toolbar');
if Request.Session.InteractionMode = TInteractionMode.Normal then
begin
Toolbar.Contents.Add(RenderMenu(Session, TableUri));
Actions := DivisionWithClass('Actions', []);
Actions.Contents.Add(CreateToggleIcon('ToggleFilter', tmFilter));
Actions.Contents.Add(CreateToggleIcon('Refresh', tmRefresh));
Toolbar.Contents.Add(Actions);
Toolbar.Contents.Add(RenderCursor(Session.Cursor));
if Session.AllowedOperations <> [] then
Toolbar.Contents.Add(RenderUpdateMethods(Session.AllowedOperations));
if Table.RecordUriProducer <> nil then
begin
OverviewUri := Table.RecordUriProducer.CreateUriForOverview(Request.UriProducer);
if not OverviewUri.IsEmpty() then
begin
ManageLink := Html.Link(OverviewUri, []);
ManageLink.Title := Request.Translator.Translate(tmManage);
ManageLink.Classes.Add('Manage');
ManageLink.Target := '_blank';
ToolBar.Contents.Add(ManageLink);
end;
end;
end;
Result := Toolbar;
end;
function TRenderTableToHtmlRequestHandler.RenderUpdateMethods(AllowedMethods: TUpdateMethods): THtmlDivision;
begin
Result := DivisionWithClass('UpdateMethods', []);
if TDataMethod.Create in AllowedMethods then
Result.Contents.Add(CreateToggleButton(tmAdd, 'ToggleAdd'));
if TDataMethod.Update in AllowedMethods then
Result.Contents.Add(CreateToggleButton(tmUpdate, 'ToggleUpdate'));
if TDataMethod.Delete in AllowedMethods then
Result.Contents.Add(CreateToggleButton(tmDelete, 'ToggleDelete'));
end;
{ TRenderTableToCsvRequestHandler }
function TRenderTableToCsvRequestHandler.HandleRequest(): THttpResponse;
var
Session: TWebSiteTableSession;
Response: THttpTextResponse;
Encoding: TCharacterEncoding;
begin
Session := Table.GetSession(Request);
try
Encoding := TCharacterEncoding.Windows1252;
Response := THttpTextResponse.Create();
Response.Entity.ContentType := TMediaTypeTextCsv.Create(Encoding);
Response.Text := RenderToCsv(Table, Session, Encoding);
Response.ContentDisposition := THttpContentDisposition.Create(dtAttachment, Name + '.csv');
Result := Response;
finally
Table.ReturnSession(Request, Session);
end;
end;
function TRenderTableToCsvRequestHandler.RenderToCsv(WebSiteTable: TWebSiteTable; Session: TWebSiteTableSession; Encoding: TCharacterEncoding): TText;
var
Renderer: TTableModelToCsvRenderer;
Region: TText;
begin
Renderer := TTableModelToCsvRenderer.Create(WebSiteTable);
Renderer.ReferenceMode := TextToReferenceMode(Request.GetParameters.GetTextValueWithDefault('referenceMode', ''));
Region := Request.GetParameters.GetTextValueWithDefault('region', '');
if Region = 'nl' then
begin
Renderer.CurrencyTextFormat := TCurrencyTextFormat.nl;
Renderer.FieldSeparator := ';';
end
else
begin
Renderer.CurrencyTextFormat := TCurrencyTextFormat.en_US;
Renderer.FieldSeparator := ',';
end;
Result := Renderer.Render(Request, Session, Encoding);
Renderer.Free();
end;
{ THandleXmlRequestHandler }
function THandleXmlRequestHandler.HandleCommand(Session: TWebSiteTableSession; Element: TDomElement): TRenderScope;
var
Command: TText;
Direction: TText;
Iterator: TIterator<TDomElement>;
Method: TText;
begin
Result := rsBody;
Command := Element.Name;
if Command = 'SortColumn' then
Session.SortColumns.ToggleSort(Element.Attributes.Get('Id').AsInteger())
else if Command = 'Filter' then
Session.ShowFilter := Element.Attributes.Get('Visible').AsBoolean()
else if Command = 'FilterColumn' then
begin
Session.Cursor.Reset();
Session.FilterColumns[Element.Attributes.Get('Id').AsInteger()].Expression := TUri.Decode(Element.Attributes.Get('Text').AsText());
end
else if Command = 'FilterGlobal' then
begin
Session.Cursor.Reset();
Session.GlobalFilterText := TUri.Decode(Element.Attributes.Get('Text').AsText());
end
else if Command = 'EnabledUpdateMethods' then
begin
if Element.Nodes.Count > 0 then
begin
Iterator := Element.CreateElementIterator();
while Iterator.IsValid() do
begin
Method := Iterator.Current.Attributes.Get('Name').AsText();
if (Method = 'Create') and (TDataMethod.Create in Session.AllowedOperations) then
Session.EnabledOperations := [TDataMethod.Create]
else if (Method = 'Update') and (TDataMethod.Update in Session.AllowedOperations) then
Session.EnabledOperations := [TDataMethod.Update]
else if (Method = 'Delete') and (TDataMethod.Delete in Session.AllowedOperations) then
Session.EnabledOperations := [TDataMethod.Delete];
Iterator.GotoNext();
end;
Iterator.Free();
end
else
Session.EnabledOperations := [];
Result := rsTable;
end
else if Command = 'CursorMove' then
begin
Direction := Element.Attributes.Get('Direction').AsText();
if Direction = 'Up' then
Session.Cursor.GotoNextPage()
else if Direction = 'Down' then
Session.Cursor.GotoPreviousPage();
end
else if Command = 'CursorStatus' then
Session.Cursor.Active := not Session.Cursor.Active
else
raise EException.Create('Unknown command: ' + Command);
end;
function THandleXmlRequestHandler.HandleCommandsRequest(Table: TWebSiteTable; Session: TWebSiteTableSession; Element: TDomElement): THttpResponse;
var
Iterator: TIterator<TDomElement>;
CursorElement: TDomElement;
ResponseElement: TDomElement;
ScopeElement: TDomElement;
Writer: TDomWriter;
Encoding: TCharacterEncoding;
Stream: TOutputStream;
Model: TTableModel;
UpdateScope: TRenderScope;
CommandScope: TRenderScope;
begin
UpdateScope := Low(TRenderScope);
Iterator := Element.CreateElementIterator();
while Iterator.IsValid() do
begin
CommandScope := HandleCommand(Session, Iterator.Current);
if CommandScope > UpdateScope then
UpdateScope := CommandScope;
Iterator.GotoNext();
end;
Iterator.Free();
Model := Session.CreateResultingModel();
Model.AddReference();
Session.Cursor.Size := Model.GetSize();
try
ScopeElement := TDomElement.Create('UpdateScope');
ScopeElement.Attributes.Add('Value', RenderScopeToText(UpdateScope));
CursorElement := TDomElement.Create('Cursor');
Session.Cursor.WriteToXml(CursorElement);
ResponseElement := TDomElement.Create('Response');
ResponseElement.Nodes.Add(ScopeElement);
ResponseElement.Nodes.Add(CursorElement);
Encoding := TCharacterEncoding.Utf8;
Result := THttpResponse.Create();
Result.StatusLine.Status := THttpStatus.SuccessfulOk;
Result.Entity.ContentType := TMediaTypeApplicationXml.Create(Encoding);
Stream := Result.Entity.Content.CreateRewriteStream();
Writer := TDomWriter.Create(Stream, Encoding);
Writer.WriteElement(ResponseElement);
Writer.Free();
Stream.Free();
ResponseElement.Free();
finally
Model.ReleaseReference();
end;
end;
function THandleXmlRequestHandler.HandleRenderRequest(Table: TWebSiteTable; Session: TWebSiteTableSession; RequestElement: TDomElement): THttpResponse;
var
FieldNameProducer: TTableFieldNameProducer;
Renderer: TTableModelToHtmlRenderer;
Response: THttpHtmlResponse;
Element: THtmlElement;
Scope: TRenderScope;
begin
Scope := TextToRenderScope(RequestElement.Attributes.Get('Scope').AsText());
FieldNameProducer := TTableFieldNameProducer.Create(Name);
Renderer := TTableModelToHtmlRenderer.Create(Request, FieldNameProducer, Name, Table, Session, Scope);
Element := Renderer.Render();
Renderer.Free();
FieldNameProducer.Free();
Response := THttpHtmlResponse.Create();
Response.ContentStatus := THtmlContentStatus.Final;
Response.Element := Element;
Result := Response;
end;
function THandleXmlRequestHandler.HandleRequest(): THttpResponse;
var
DomElement: TDomElement;
InputStream: TInputStream;
Session: TWebSiteTableSession;
begin
InputStream := Request.HttpRequest.Entity.Content.CreateInputStream();
DomElement := ParseXmlToDom(InputStream);
Session := Table.GetSession(Request);
if DomElement.Name = 'Commands' then
Result := HandleCommandsRequest(Table, Session, DomElement)
else if DomElement.Name = 'Render' then
Result := HandleRenderRequest(Table, Session, DomElement)
else
begin
Result := THttpResponse.Create();
Result.StatusLine.Status := THttpStatus.ClientErrorBadRequest;
end;
Table.ReturnSession(Request, Session);
InputStream.Free();
DomElement.Free();
end;
{ TFormFieldRequestHandler }
function TFormFieldRequestHandler.HandleRequest(): THttpResponse;
var
IndexOfDash: TInteger32;
FieldName: TText;
RowID: TText;
ColumnIndex: TInteger32;
Column: TTableHeader;
Field: TFormField;
Session: TWebSiteTableSession;
TableModel: TTableModel;
Handler: TWebSiteRequestHandler;
Columns: TTableHeaders;
Cells: TTableCells;
Row: TTableRow;
begin
Session := Table.GetSession(Request);
TableModel := Session.CreateResultingModel();
TableModel.AddReference();
try
FieldName := Request.Path.RemoveFirst();
Request.UriProducer.PushPath([FieldName]);
IndexOfDash := FieldName.LastIndexOf('-');
RowID := FieldName.SubtextTo(IndexOfDash - 1);
ColumnIndex := TextToInteger32(FieldName.SubtextFrom(IndexOfDash + 1));
Columns := TableModel.GetColumnModel().GetHeaders(TInteger32Interval.NewSingleValue(ColumnIndex));
// TODO: We currently fetch all visible cells and search the row with the applicable identifier. However, this can be made more
// efficient when we can query the table model for rows specific identifiers
Cells := TableModel.GetCells(TableModel.GetSize());
Column := Columns[ColumnIndex];
Row := RowWithIdentifier(Table, Cells, RowID);
Field := ActiveFormFieldFactory.CreateField(FieldName, Column.Caption, Column.CellType, True);
Field.Value := Row[ColumnIndex].Value;
Handler := Field.Old_CreateRequestHandler(Request);
Handler.AddReference();
try
Result := Handler.HandleRequest();
finally
Handler.ReleaseReference();
end;
Cells.Free();
Columns.Free();
Field.Free();
Request.UriProducer.PopPath();
finally
TableModel.ReleaseReference();
Table.ReturnSession(Request, Session);
end;
end;
function TFormFieldRequestHandler.RowWithIdentifier(Table: TWebSiteTable; Cells: TTableCells; Identifier: TText): TTableRow;
var
i: TInteger32;
Row: TTableRow;
CurrentIdentifier: TTableHeaderIdentifier;
begin
Result := nil;
i := 0;
while (Result = nil) and (i < Cells.Bounds.Height) do
begin
Row := Cells[i];
CurrentIdentifier := Table.RowIdentifierProducer.GetIdentifier(Row);
CurrentIdentifier.AddReference();
if CurrentIdentifier.ToText() = Identifier then
Result := Row;
CurrentIdentifier.ReleaseReference();
Inc(i);
end;
end;
{ TRootTableRequestHandler }
procedure TRootTableRequestHandler.ConfigureHandler(Handler: TWebSiteRequestHandler);
var
TableHandler: TTableWebSiteRequestHandler;
begin
if Handler is TTableWebSiteRequestHandler then
begin
TableHandler := Handler as TTableWebSiteRequestHandler;
TableHandler.Table := Table;
TableHandler.Name := Name;
end;
end;
function TRootTableRequestHandler.CreateInsertRequestHandler(): TDefaultWebSiteRequestHandler;
var
FormHandler: TInsertFormRequestHandler;
Session: TWebSiteTableSession;
FieldNameProducer: TTableFieldNameProducer;
Renderer: TTableModelToHtmlRenderer;
begin
Session := Table.GetSession(Request);
try
if TDataMethod.Create in Session.EnabledOperations then
begin
FieldNameProducer := TTableFieldNameProducer.Create(Name);
Renderer := TTableModelToHtmlRenderer.Create(Request, FieldNameProducer, Name, Table, Session, rsTable);
FormHandler := TInsertFormRequestHandler.Create(Request);
FormHandler.Form := Renderer.CreateInsertForm();
Renderer.Free();
FieldNameProducer.Free();
Result := FormHandler;
end
else
Result := TStatusWebSiteRequestHandler.Create(Request, THttpStatus.ClientErrorForbidden);
finally
Table.ReturnSession(Request, Session);
end;
end;
function TRootTableRequestHandler.GetChildHandler(const Segment: TText; ResourceType: TUriResourceType): TWebSiteRequestHandler;
begin
if Segment = 'Form' then
Result := TFormFieldRequestHandler.Create(Request)
else if Segment = 'Insert' then
Result := CreateInsertRequestHandler()
else
Result := TNotFoundWebSiteRequestHandler.Create(Request);
ConfigureHandler(Result);
end;
function TRootTableRequestHandler.HandleRequest(): THttpResponse;
var
Format: TText;
Handler: TDefaultWebSiteRequestHandler;
begin
if (Request.HttpRequest.Entity.ContentType <> nil) and (Request.HttpRequest.Entity.ContentType is TMediaTypeApplicationXml) then
Handler := THandleXmlRequestHandler.Create(Request)
else
begin
Format := Request.GetParameters.GetTextValueWithDefault('format', '');
if TTextCollation.DefaultCaseInsensitive.Equal(Format, 'CSV') then
Handler := TRenderTableToCsvRequestHandler.Create(Request)
else if Format = '' then
Handler := TRenderTableToHtmlRequestHandler.Create(Request)
else
Handler := TBadRequestWebSiteRequestHandler.Create(Request, 'Unknown format: ' + Format);
end;
Handler.AddReference();
try
ConfigureHandler(Handler);
Result := Handler.HandleRequest();
finally
Handler.ReleaseReference();
end;
end;
{ TTableWebSiteRequestHandler }
destructor TTableWebSiteRequestHandler.Destroy();
begin
Title.ReleaseReference();
if OwnsTable then
Table.Free();
inherited Destroy();
end;
function TTableWebSiteRequestHandler.GetTitle(): TDocumentNode;
begin
Result := FTitle;
end;
procedure TTableWebSiteRequestHandler.SetTitle(const Value: TDocumentNode);
begin
if Value <> Title then
begin
Value.AddReference();
Title.ReleaseReference();
FTitle := Value;
end;
end;
end.
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