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unit HtmlHelp2Unit2;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, ExtCtrls, LCLProc,
IpHtml, Buttons, helpintfs, lazhelpintf, ComCtrls, ipfilebroker, iputils;
type
{ TForm2 }
TForm2 = class(TForm)
IHP: TIpHtmlPanel;
DataProvider: TIpFileDataProvider;
Panel1: TPanel;
IndexButton: TSpeedButton;
BackButton: TSpeedButton;
ForwardButton: TSpeedButton;
StatusBar1: TStatusBar;
procedure BackButtonClick(Sender: TObject);
procedure ForwardButtonClick(Sender: TObject);
procedure IHPDocumentOpen(Sender: TObject);
procedure IHPHotChange(Sender: TObject);
procedure IndexButtonClick(Sender: TObject);
private
public
{ public declarations }
procedure showURL(URL : String);
end;
var
Form2: TForm2;
procedure RegisterHelpViewer;
implementation
{$R htmlhelp2unit2.lfm}
type
THTMLHelpViewer = class(THelpViewer)
private
public
constructor Create(TheOwner: TComponent); override;
function ShowNode(Node: THelpNode; var ErrMsg: string): TShowHelpResult; override;
//procedure Assign(Source: TPersistent); override;
//procedure Load(Storage: TConfigStorage); override;
//procedure Save(Storage: TConfigStorage); override;
//function GetLocalizedName: string; override;
published
property AutoRegister;
end;
{ THTMLHelpViewer }
constructor THTMLHelpViewer.Create(TheOwner: TComponent);
begin
inherited Create(TheOwner);
AddSupportedMimeType('text/html');
end;
function THTMLHelpViewer.ShowNode(Node: THelpNode; var ErrMsg: string): TShowHelpResult;
begin
DebugLn (Format('ShowNode: URL:"%s" ID:"%s" Context:"%d"',[Node.URL,Node.ID,Node.Context]));
Form2.ShowURL(Node.URL);
result := shrSuccess;
end;
var Help_Viewer : THTMLHelpViewer = nil;
procedure RegisterHelpViewer;
begin
if Help_Viewer = nil then
begin
Help_Viewer := THTMLHelpViewer.Create(nil);
Help_Viewer.RegisterSelf;
end;
end;
{ TForm2 }
procedure TForm2.IndexButtonClick(Sender: TObject);
begin
ShowURL('html/index.html');
end;
// Show URL of a link in Status Bar
procedure TForm2.IHPHotChange(Sender: TObject);
begin
StatusBar1.Panels[0].Text := IHP.HotURL;
end;
procedure TForm2.BackButtonClick(Sender: TObject);
begin
IHP.GoBack;
end;
procedure TForm2.ForwardButtonClick(Sender: TObject);
begin
IHP.GoForward;
end;
procedure TForm2.IHPDocumentOpen(Sender: TObject);
begin
BackButton.Enabled := IHP.canGoBack;
ForwardButton.Enabled := IHP.canGoForward;
end;
procedure TForm2.showURL(URL : String);
begin
Show;
URL := expandLocalHtmlFileName (URL);
IHP.OpenURL(URL);
end;
end.
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