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unit HTTPContentProvider;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BaseContentProvider, LNetHTTPDataProvider, IpHtml, ComCtrls,
Menus, Controls, lhelpstrconsts;
type
{ THTTPContentProvider }
THTTPContentProvider = class(TBaseContentProvider)
private
fHomeUrl: String;
fPopup: TPopupMenu;
fStatusBar: TStatusBar;
fHtml: TIpHtmlPanel;
fHttpDataProvider: TIpHTTPDataProvider;
procedure IpHtmlPanelHotChange(Sender: TObject);
procedure PopupCopyClick(Sender: TObject);
procedure SetTitle(ATitle: String);
public
function CanGoBack: Boolean; override;
function CanGoForward: Boolean; override;
function GetHistory: TStrings; override;
function LoadURL(const AURL: String; const AContext: THelpContext=-1): Boolean; override;
procedure GoHome; override;
procedure GoBack; override;
procedure GoForward; override;
class function GetProperContentProvider(const AURL: String): TBaseContentProviderClass; override;
constructor Create(AParent: TWinControl; AImageList: TImageList); override;
end;
implementation
{ THTTPContentProvider }
procedure THTTPContentProvider.IpHtmlPanelHotChange(Sender: TObject);
begin
fStatusBar.SimpleText := fHtml.HotURL;
end;
procedure THTTPContentProvider.PopupCopyClick(Sender: TObject);
begin
fHtml.CopyToClipboard;
end;
procedure THTTPContentProvider.SetTitle(ATitle: String);
begin
if Parent = nil then exit;
TTabSheet(Parent).Caption := ATitle;
end;
function THTTPContentProvider.CanGoBack: Boolean;
begin
//Result:=inherited CanGoBack;
fHtml.canGoBack;
end;
function THTTPContentProvider.CanGoForward: Boolean;
begin
//Result:=inherited CanGoForward;
fHtml.canGoForward;
end;
function THTTPContentProvider.GetHistory: TStrings;
begin
//Result:=inherited GetHistory;
end;
function THTTPContentProvider.LoadURL(const AURL: String;
const AContext: THelpContext): Boolean;
begin
Result:=True;
SetTitle(Format(slhelp_Loading, [AURL]) );
//WriteLn('Loading URL:', AURL);
fHtml.OpenURL(AURL);
SetTitle(AURL);
if fHomeURL = '' then fHomeURL := AURL;
end;
procedure THTTPContentProvider.GoHome;
begin
LoadURL(fHomeURL);
end;
procedure THTTPContentProvider.GoBack;
begin
fHtml.GoBack;
end;
procedure THTTPContentProvider.GoForward;
begin
fHtml.GoForward;
end;
class function THTTPContentProvider.GetProperContentProvider(const AURL: String
): TBaseContentProviderClass;
begin
Result := THTTPContentProvider;
end;
constructor THTTPContentProvider.Create(AParent: TWinControl; AImageList: TImageList);
begin
inherited Create(AParent, AImageList);
fPopUp := TPopupMenu.Create(fHtml);
fPopUp.Items.Add(TMenuItem.Create(fPopup));
with fPopUp.Items.Items[0] do begin
Caption := slhelp_Copy;
OnClick := @PopupCopyClick;
end;
fHttpDataProvider := TIpHTTPDataProvider.Create(AParent);
fHtml := TIpHtmlPanel.Create(Parent);
with fHtml do begin
DataProvider := fHttpDataProvider;
//OnDocumentOpen := @IpHtmlPanelDocumentOpen;
OnHotChange := @IpHtmlPanelHotChange;
PopupMenu := fPopUp;
Parent := AParent;
Align := alClient;
Visible := True;
end;
fStatusBar := TStatusBar.Create(AParent);
with fStatusBar do begin
Parent := AParent;
Align := alBottom;
SimplePanel := True;
end;
end;
initialization
RegisterContentProvider('http://', THTTPContentProvider);
end.
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