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