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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.Form.Field.Suggest;
interface
uses
Boolean,
Collection.List,
Dictionary,
Html.Element,
Html.Element.Block.Form,
Integer._32,
Sql.Type_,
StructuredDocument.Node,
Table.Header.Identifier,
Text,
Type_,
Type_.Structured.Value,
Value,
WebSite.Form.Field,
WebSite.Form.Problem,
WebSite.Request,
WebSite.Request.Handler,
WebSite.Table,
WebSite.Table.Module;
type
TFormSuggestField = class(TFormField)
private
FTable: TWebSiteTable;
FModule: TTableWebSiteModule;
procedure SetTable(const Value: TWebSiteTable);
procedure SetModule(const Value: TTableWebSiteModule);
protected
function GetInteger32Value(): TInteger32; deprecated;
procedure SetInteger32Value(const Value: TInteger32); deprecated;
procedure ValueChanged(); override;
function ParseRecordSetFromSqlType(Type_: TSqlType; Value: TText): TRecordSet;
function ParseFromTextForSqlType(Type_: TSqlType; Value: TText): TValue;
function ParseFromText(Value: TText): TValue;
procedure RenderLabel(Request: TWebSiteRequest; Contents: THtmlElementList; Identifier: TText);
function RenderOpenLink(Request: TWebSiteRequest; Identifier: TTableHeaderIdentifier): THtmlElement;
function RenderSuggestionTable(Request: TWebSiteRequest): THtmlElement;
function HiddenValueField(const Name: TText; const Value: TText): THtmlInput;
property Module: TTableWebSiteModule read FModule write SetModule; // TODO: Should be removed, please use property Table
public
TextValue: TText deprecated; // TODO: We should not store every value as a text
DisplayColumnIndexes: TList<TInteger32>;
Type_: TType;
SupportsMultipleValues: TBoolean;
ExpandByDefault: TBoolean;
constructor Create(Name: TText; Caption: TDocumentNode); override;
destructor Destroy(); override;
function Render(Request: TWebSiteRequest): THtmlElement; override;
procedure LoadFromParameters(Parameters: TDictionary); override;
function CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler; override;
function Old_CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler; override;
procedure CheckInput(Problems: TFormProblems); override;
function IsAssigned(): TBoolean;
property Table: TWebSiteTable read FTable write SetTable;
property Integer32Value: TInteger32 read GetInteger32Value write SetInteger32Value; // TODO: Should be removed
end;
implementation
uses
Collection.List.Array_,
Currency.Type_,
Exception,
Html,
Html.Element.Block,
Html.Element.Inline_,
Http.Response,
Http.Response.Html,
Integer._32.Interval,
Integer._32.TextFormat,
Integer.TextFormat.Standard,
Integer.Type_,
Integer.Value,
Javascript,
Language.TranslationMap.Constants.General,
Object_.List,
Object_.Reference.Counter,
SerialIdentifier.Type_,
Sql.Table.Column,
Table.Cells,
Table.Header,
Table.Header.Model,
Table.Model,
Table.Row,
Text.Type_,
Text.Value,
Type_.Structured,
Type_.Structured.Member,
TypedValue,
UserInterface.Control.Mode,
Uuid,
Uuid.Type_,
Uuid.Value,
Value.Unknown,
WebSite.Form.Field.Factory,
WebSite.Table.Session;
{ TFormSuggestField }
procedure TFormSuggestField.CheckInput(Problems: TFormProblems);
begin
inherited CheckInput(Problems);
if InputOK and not Nullable then
InputOK := Problems.CheckFieldNotBlank(Caption, TextValue);
if InputOK then
UpdateValue(ParseFromText(TextValue));
// TODO: We should check whether a valid option has been provided
end;
constructor TFormSuggestField.Create(Name: TText; Caption: TDocumentNode);
begin
inherited Create(Name, Caption);
DisplayColumnIndexes := TArrayList<TInteger32>.Create();
end;
function TFormSuggestField.Old_CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler;
begin
Result := Module.CreateRequestHandler(Request);
end;
destructor TFormSuggestField.Destroy();
begin
DisplayColumnIndexes.Free();
Module.ReleaseReference();
inherited Destroy();
end;
function TFormSuggestField.GetInteger32Value(): TInteger32;
begin
Result := TextToInteger32(TextValue);
end;
function TFormSuggestField.HiddenValueField(const Name: TText; const Value: TText): THtmlInput;
begin
Result := HiddenField(Name, Value);
Result.Classes.Add('InputValue');
end;
function TFormSuggestField.IsAssigned(): TBoolean;
begin
Result := (Value <> nil) and not (Value is TUnknown);
end;
procedure TFormSuggestField.LoadFromParameters(Parameters: TDictionary);
begin
TextValue := Parameters.GetTextValueWithDefault(Name, '');
end;
function TFormSuggestField.CreateRequestHandler(Request: TWebSiteRequest): TWebSiteRequestHandler;
begin
Result := Module.CreateRootHandler(Request);
end;
function TFormSuggestField.ParseFromText(Value: TText): TValue;
begin
if Type_ is TSqlType then
Result := ParseFromTextForSqlType(Type_ as TSqlType, Value)
else
raise EException.Create('Currently only SQL types are supported');
end;
function TFormSuggestField.ParseFromTextForSqlType(Type_: TSqlType; Value: TText): TValue;
var
ColumnType: TType;
begin
if Type_.View.PrimaryKey.Columns.Count = 1 then
begin
ColumnType := Type_.View.PrimaryKey.Columns[0].Column.Type_.GetDecoratedType();
if Value = '' then
Result := TUnknown.Create()
else
begin
if not SupportsMultipleValues then
begin
if (ColumnType is TIntegerType) or (ColumnType is TSerialIdentifierType) then
Result := TIntegerValue.Create(TStandardIntegerTextFormat.Decimal.FromText(Value))
else if (ColumnType is TTextType) or (ColumnType is TTextualUuidType) then
Result := TTextValue.Create(Value)
else if ColumnType is TUuidType then
Result := TUuidValue.Create(TUuid.FromText(Value))
else if ColumnType is TSqlType then
Result := ParseFromTextForSqlType(ColumnType as TSqlType, Value)
else
raise EException.Create('Unsupported key type: ' + ColumnType.ToText());
end
else
Result := ParseRecordSetFromSqlType(Type_, Value);
end;
end
else
raise EException.Create('Currently only SQL types with a one column primary key are supported');
end;
function TFormSuggestField.ParseRecordSetFromSqlType(Type_: TSqlType; Value: TText): TRecordSet;
var
TableColumn: TSqlTableColumn;
ColumnType: TType;
RecordType: TRecordType;
Record_: TRecord;
CopiedValue: TText;
ParsedValue: TText;
begin
TableColumn := Type_.View.PrimaryKey.Columns[0].Column;
ColumnType := TableColumn.Type_.GetDecoratedType();
if
(ColumnType is TIntegerType)
or (ColumnType is TSerialIdentifierType)
or (ColumnType is TTextType)
or (ColumnType is TTextualUuidType)
then
begin
RecordType := TRecordType.Create();
RecordType.Members.Add(TStructuredTypeMember.Create(TableColumn.Identifier, TableColumn.Caption, ColumnType));
Result := TRecordSet.Create(TRecordSetType.Create(RecordType));
CopiedValue := Value;
while CopiedValue.Count > 0 do
begin
ParsedValue := CopiedValue.Parse(',');
Record_ := TRecord.Create(RecordType);
if (ColumnType is TIntegerType) or (ColumnType is TSerialIdentifierType) then
Record_.Values.Add(TIntegerValue.Create(TextToInteger32(ParsedValue)))
else
Record_.Values.Add(TTextValue.Create(ParsedValue));
Result.Add(Record_);
end;
end
else
raise EException.Create('Unsupported key type: ' + ColumnType.ToText());
end;
function TFormSuggestField.Render(Request: TWebSiteRequest): THtmlElement;
var
Suggest: THtmlDivision;
Division: THtmlDivision;
Icon: THtmlDivision;
Values: THtmlDivision;
ValuesText: TText;
ValueText: TText;
TextInput: THtmlInput;
InnerDropDownDivision: THtmlDivision;
OuterDropDownDivision: THtmlDivision;
begin
Suggest := THtmlDivision.Create();
Suggest.Classes.Add('Suggest');
Suggest.DataSet.AddRequired('mode', ControlModeToText(Mode));
Suggest.DataSet.AddRequired('label-columns', TInteger32TextFormat.Default.Join(DisplayColumnIndexes, ', '));
Suggest.DataSet.AddRequired('supports-multiple-values', JavascriptBoolean(SupportsMultipleValues));
Suggest.DataSet.AddRequired('expand-by-default', JavascriptBoolean(ExpandByDefault));
Values := THtmlDivision.Create();
Values.Classes.Add('Values');
ValuesText := TextValue;
while ValuesText.Count > 0 do
begin
ValueText := ValuesText.Parse(',');
try
RenderLabel(Request, Values.Contents, ValueText);
except
Values.Contents.Add(SpanWithClass('error', [Html.Span([Html.Text('Referred value cannot be found: '), Html.Span([Html.Text(ValueText)])])]));
end;
end;
Division := THtmlDivision.Create();
Suggest.Contents.Add(Division);
if Mode = TControlMode.Edit then
begin
Icon := THtmlDivision.Create();
Icon.Classes.Add('Icon');
Division.Contents.Add(Icon);
Division.Contents.Add(HiddenValueField(Name, TextValue));
Division.Contents.Add(Values);
TextInput := THtmlInput.Create(THtmlInputType.Text);
TextInput.Classes.Add('TextInput');
TextInput.AutoComplete := False;
Division.Contents.Add(TextInput);
InnerDropDownDivision := THtmlDivision.Create();
InnerDropDownDivision.Classes.Add('inner-drop-down');
InnerDropDownDivision.Contents.Add(Html.Division([RenderSuggestionTable(Request)]));
OuterDropDownDivision := THtmlDivision.Create();
OuterDropDownDivision.Classes.Add('outer-drop-down');
OuterDropDownDivision.Contents.Add(InnerDropDownDivision);
Suggest.Contents.Add(OuterDropDownDivision);
end
else
Division.Contents.Add(Values);
Division.Classes.Add(Type_.ClassName);
Result := Suggest;
end;
procedure TFormSuggestField.RenderLabel(Request: TWebSiteRequest; Contents: THtmlElementList; Identifier: TText);
var
ValueElement: THtmlDivision;
Session: TWebSiteTableSession;
TableModel: TTableModel;
TableHeaderIdentifier: TTableHeaderIdentifier;
TableHeaderIdentifiers: TList<TTableHeaderIdentifier>;
Cells: TTableCells;
i: TInteger32;
Division: THtmlDivision;
Column: THtmlElement;
ColumnIndex: TInteger32;
Row: TTableRow;
Cell: TTypedValue;
Value: TValue;
FormField: TFormField;
ColumnModel: TTableHeaderModel;
Columns: TTableHeaders;
ColumnType: TType;
begin
ValueElement := THtmlDivision.Create();
ValueElement.Classes.Add('Value');
Contents.Add(ValueElement);
Request.UriProducer.PushPath([Module.GetName()]);
Session := Table.GetSession(Request);
TableModel := Session.CreateResultingModel();
TableModel.AddReference();
ColumnModel := TableModel.GetColumnModel();
Columns := ColumnModel.GetHeaders(TInteger32Interval.NewFromSize(ColumnModel.GetCount()));
TableHeaderIdentifier := TableModel.GetRowModel().CreateEmptyIdentifier();
TableHeaderIdentifier.FromText(Identifier);
TableHeaderIdentifiers := TObjectList<TTableHeaderIdentifier>.Create();
TableHeaderIdentifiers.ElementManager := TReferenceCounter<TTableHeaderIdentifier>.Create();
TableHeaderIdentifiers.Add(TableHeaderIdentifier);
try
Cells := TableModel.GetRows(TableHeaderIdentifiers);
Row := Cells[0];
if (Mode = TControlMode.Display) and (Table.RecordUriProducer <> nil) then
ValueElement.Contents.Add(RenderOpenLink(Request, TableHeaderIdentifier));
// TODO: Currently we manually render the table cells, instead we should use a TTableModelToHtmlRenderer
for i := 0 to DisplayColumnIndexes.Count - 1 do
begin
ColumnIndex := DisplayColumnIndexes[i];
Cell := Row[ColumnIndex];
Value := Cell.Value;
Value.AddReference();
ColumnType := Cell.Type_;
FormField := ActiveFormFieldFactory.CreateField(TableHeaderIdentifier.ToText() + '-' + Integer32ToText(i), Columns[i].Caption, ColumnType, True, TControlMode.Display);
FormField.Value := Value;
Request.UriProducer.PushPath(['Form']);
Column := FormField.Render(Request);
Request.UriProducer.PopPath();
FormField.Free();
Division := THtmlDivision.Create();
if Column <> nil then
begin
Division.Contents.Add(Column);
if ColumnType is TCurrencyType then
Division := Html.Division([Html.Division([Html.Text('€')]), Division]);
end;
ValueElement.Contents.Add(Division);
Value.ReleaseReference();
end;
if Mode = TControlMode.Edit then
begin
ValueElement.DataSet.AddRequired('identifier', Identifier);
ValueElement.Contents.Add(DivisionWithClass('Clear', []));
end;
Cells.Free();
finally
TableHeaderIdentifiers.Free();
Columns.Free();
TableModel.ReleaseReference();
Table.ReturnSession(Request, Session);
Request.UriProducer.PopPath();
end;
end;
function TFormSuggestField.RenderOpenLink(Request: TWebSiteRequest; Identifier: TTableHeaderIdentifier): THtmlElement;
var
Image: THtmlSpan;
Caption: THtmlSpan;
Container: THtmlAnchor;
begin
Image := THtmlSpan.Create();
Image.Classes.Add('Image');
Caption := THtmlSpan.Create();
Caption.Classes.Add('Caption');
Caption.Contents.Add(Html.Text(Request.Translator.Translate(tmOpen)));
Container := THtmlAnchor.Create();
Container.HRef := Table.RecordUriProducer.CreateUriForValue(Request.UriProducer, Identifier);
Container.Classes.Add('Open');
Container.Contents.Add(Image);
Container.Contents.Add(Caption);
Result := Container;
end;
function TFormSuggestField.RenderSuggestionTable(Request: TWebSiteRequest): THtmlElement;
var
Response: THttpResponse;
Handler: TWebSiteRequestHandler;
Session: TWebSiteTableSession;
begin
Handler := Module.CreateHtmlRequestHandler(Request);
Request.HandlerPath.Push(Handler);
Request.UriProducer.PushPath([Module.GetName()]);
Session := Table.GetSession(Request);
Session.GlobalFilterText := '';
Table.ReturnSession(Request, Session);
try
Response := Handler.HandleRequest();
Response.AddReference();
if Response is THttpHtmlResponse then
begin
Result := (Response as THttpHtmlResponse).Element;
Result.AddReference();
end
else
Result := nil;
Response.ReleaseReference();
if Result <> nil then
Result.DiscardReference();
finally
Request.UriProducer.PopPath();
Request.HandlerPath.Pop();
end;
end;
procedure TFormSuggestField.SetTable(const Value: TWebSiteTable);
begin
FTable := Value;
Module := TTableWebSiteModule.Create(Name, Table);
end;
procedure TFormSuggestField.SetInteger32Value(const Value: TInteger32);
begin
TextValue := Integer32ToText(Value);
end;
procedure TFormSuggestField.SetModule(const Value: TTableWebSiteModule);
begin
if Value <> Module then
begin
Value.AddReference();
Module.ReleaseReference();
FModule := Value;
end;
end;
procedure TFormSuggestField.ValueChanged();
begin
if Value is TUnknown then
TextValue := ''
else
TextValue := Value.ToText();
end;
end.
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