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{
fpGUI - Free Pascal Graphical User Interface
Copyright (C) 2000 - 2001 by
Areca Systems GmbH / Sebastian Guenther
Copyright (C) 2006 by Graeme Geldenhuys
member of the fpGUI development team.
Application class declarations
See the file COPYING.fpGUI, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{%mainunit fpgui.pp}
{$IFDEF read_interface}
{ Application class declarations }
{ TApplication }
TApplication = class(TDefApplication)
private
// FDisplay: TGfxDisplay;
// FDisplayName: String;
// FForms: TList;
FUserStyle: TStyle;
// function GetDisplay: TGfxDisplay;
// procedure SetDisplayName(const AValue: String);
protected
FDefaultStyle: TStyle;
FTitle: String;
XMLDoc: TXMLDocument;
function GetDefaultStyle: TStyle;
procedure SetTitle(const ATitle: String);
public
// constructor Create; reintroduce;
destructor Destroy; override;
procedure SetupXMLStreaming(const AXMLFilename: String);
// procedure CreateForm(InstanceClass: TComponentClass; var Reference);
// procedure AddForm(AForm: TCustomForm);
// procedure Run;
procedure SetStyle(pNewStyle: TStyle);
// property Display: TGfxDisplay read GetDisplay;
// property DisplayName: String read FDisplayName write SetDisplayName;
property DefaultStyle: TStyle read GetDefaultStyle;
property Title: String read FTitle write SetTitle;
end;
{$ENDIF read_interface}
{$IFDEF read_implementation}
// ===================================================================
// TApplication
// ===================================================================
{
constructor TApplication.Create;
begin
inherited Create(nil);
FForms := TList.Create;
end;
}
destructor TApplication.Destroy;
begin
FUserStyle := nil;
// FForms.Free;
// !!!: Only auto-created styles should be destroyed, not user-provided
if Assigned(FDefaultStyle) then
FDefaultStyle.Free;
// if Assigned(FDisplay) then
// FDisplay.Free;
inherited Destroy;
end;
procedure TApplication.SetupXMLStreaming(const AXMLFilename: String);
begin
ReadXMLFile(XMLDoc, AXMLFilename);
end;
{
procedure TApplication.CreateForm(InstanceClass: TComponentClass; var Reference);
type
PForm = ^TCustomForm;
var
form: PForm;
Filename: String;
TextStream, BinStream: TStream;
begin
form := @Reference;
form^ := TCustomForm(InstanceClass.Create(Self));
Filename := LowerCase(Copy(InstanceClass.ClassName, 2, 255)) + '.frm';
TextStream := TFileStream.Create(Filename, fmOpenRead);
BinStream := TMemoryStream.Create;
ObjectTextToBinary(TextStream, BinStream);
TextStream.Free;
BinStream.Position := 0;
BinStream.ReadComponent(Form^);
BinStream.Free;
Form^.Show;
end;
}
{
procedure TApplication.AddForm(AForm: TCustomForm);
begin
FForms.Add(AForm);
AForm.Show;
end;
}
{
procedure TApplication.Run;
begin
Display.Run;
end;
}
procedure TApplication.SetStyle(pNewStyle: TStyle);
begin
if Assigned(FUserStyle) then
FUserStyle.Free;
FUserStyle := pNewStyle;
end;
{
function TApplication.GetDisplay: TGfxDisplay;
begin
if FDisplay = nil then FDisplay := TDefDisplay.Create(FDisplayName);
Result := FDisplay;
end;
}
{
procedure TApplication.SetDisplayName(const AValue: String);
begin
// The display name cannot be changed after we have created it.
if (FDisplayName=AValue) or (FDisplay<>nil) then exit;
FDisplayName:=AValue;
end;
}
function TApplication.GetDefaultStyle: TStyle;
begin
if Assigned(FUserStyle) then
Result := FUserStyle
else
begin
if not Assigned(FDefaultStyle) then
FDefaultStyle := TDefaultStyle.Create(self);
Result := FDefaultStyle;
end;
end;
procedure TApplication.SetTitle(const ATitle: String);
begin
if ATitle <> FTitle then
begin
FTitle := ATitle;
// !!!: Change title of all forms with Text='' to FTitle
end;
end;
{!!!: Remove this ASAP
function TApplication.XMLReadFormProc(Instance: TComponent): Boolean;
var
Node: TDOMNode;
Reader: TXMLStreamingReader;
begin
Result := False;
if not Assigned(XMLDoc) then
exit;
Node := XMLDoc.DocumentElement.FirstChild;
// Search the correct serialisation node
while True do
begin
if not Assigned(Node) then
exit;
if (Node.NodeType = ELEMENT_NODE) and (Node.NodeName = 'component') and
(UpperCase(TDOMElement(Node).GetAttribute('class')) = Instance.ClassName) then
break;
Node := Node.NextSibling;
end;
Reader := TXMLStreamingReader.Create(Node as TDOMElement);
try
Reader.ReadRootComponent(Instance);
finally
Reader.Free;
end;
Result := True;
end;}
{$ENDIF read_implementation}
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