iOS, How to make the bridge with event between ObjP & delphi ? [Edit]
iOS, How to make the bridge with event in delphi ?
I write small class ( async downloader using NSURLConnection ).
And It's works. so I want to include main program with delphi style.
But, Objective C Classes can not have published sections...
How to bond between ObjC style pascal class and delphi (FPC) with event ?
If any
Thank a lot
Simon, Choi
>//
>// URLDownload Object Class
>//
>unit UrlDownload;
>
>{$modeswitch ObjectiveC1}
>
>interface
>
>uses
> sysUtils,iPhoneAll;
>
>type
> // Define Event Type
> TXferState = (xsStart, xsWork, xsEnd, xsErr);
>*// Delphi Style Event*
>*TOnXferInfo = procedure (state : TXferState) of Object;*
> // Define Protocol
> TXferEventProtocol = objcprotocol
> optional
> procedure onXferEvent(state : TXferState); message 'onXferEvent:';
> end;
>
> // Object Class
> TURLConnection = objcclass(NSURLConnection,TXferEventProtocol)
> //
> parent : id;
> webData : NSMutableData;
> downCur : Integer;
> downTot : Integer;
> //
> procedure download(url : NSString); message 'download:';
> protected
> reqURL : NSURL;
> theRequest : NSMutableURLRequest;
> public
>
> // Create,Destroy
> function init : id; override;
> procedure dealloc; override;
> // Overrider SURLConnection Funcs.
> procedure connection_didReceiveResponse(connection : NSURLConnection; response : NSURLResponse ); override;
> procedure connection_didReceiveData (connection : NSURLConnection; data : NSData ); override;
> procedure connection_didFailWithError (connection : NSURLConnection; error : NSError ); override;
> procedure connectionDidFinishLoading (connection : NSURLConnection); override;
> *published // Error : Can't permit published in ObjP Class*
> *// Event*
> *property OnXferStart : TOnXferInfo read FOnXferInfo write FOnXferInfo;*
> end;
>
>implementation
>
>//
>function TURLConnection.init : id;
> begin
> Result := inherited init;
> webData := NSMutableData.alloc.init;
> end;
>
>//
>procedure TURLConnection.dealloc;
> begin
> webData.release;
> inherited dealloc;
> end;
>
>// download func.
>procedure TURLConnection.download(url : NSString);
> begin
> reqURL := NSURL.urlWithString(url);
> theRequest := NSMutableURLRequest.requestWithURL(reqURL);
> //
> initWithRequest_delegate(theRequest,self);
> end;
>
>// When downloading start
>procedure TURLConnection.connection_didReceiveResponse(connection : NSURLConnection; response : NSURLResponse );
> begin
> // Init Status
> downCur := 0;
> downTot := response.expectedContentLength;
> webData.setLength(0);
> //
> NSLog(NSStr('Event:didReceiveResponse'));
> // Make Event
> if parent.respondsToSelector(sel_registerName(Pchar('onXferEvent:'))) then
> parent.onXferEvent(xsStart);
> end;
>
>// When tranfering
>procedure TURLConnection.connection_didReceiveData (connection : NSURLConnection; data : NSData );
> begin
> //
> inc(downCur,data.length);
> webData.appendData(data);
> // Make Event
> if parent.respondsToSelector(sel_registerName(Pchar('onXferEvent:'))) then
> parent.onXferEvent(xsWork);
> end;
>
>// When Downloading finished
>procedure TURLConnection.connectionDidFinishLoading (connection : NSURLConnection);
> Var
> fileName : NSString;
> pathArr : NSArray;
> folder : NSString;
> filePath : NSString;
> fileURL : NSURL;
> writeError : NSError;
> begin
> //
> fileName := reqURL.path.lastPathComponent;
> pathArr := NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,True);
> folder := pathArr.objectAtIndex(0);
>
> filePath := folder.stringByAppendingPathComponent(fileName);
> fileURL := NSURL.fileURLWithPath(filePath);
> writeError := nil;
> // Result
> // fileName : RADStudio_XE2_datasheet.pdf
> // folder : /Users/..iPhone Simulator/4.3/.../Documents/
> // filePath : /Users/..iPhone Simulator/4.3/.../Documents/RADStudio_XE2_datasheet.pdf
> // fileURL : file://localhost/Users/.../RADStudio_XE2_datasheet.pdf
>
> // Save to disk
> webData.writeToURL_options_error(fileURL,0,@writeError);
> webData.setLength(0);
> //
> Case writeError <> nil of
> True : NSLog(NSStr('Event:Saving Error'));
> False : NSLog(NSStr('Event:didFinishLoading'));
> End;
> // 이벤트 생성
> if parent.respondsToSelector(sel_registerName(Pchar('onXferEvent:'))) then
> parent.onXferEvent(xsEnd);
> end;
>
>// OnError, 오류 발생시
>procedure TURLConnection.connection_didFailWithError (connection : NSURLConnection; error : NSError );
> begin
> NSLog(NSStr('Event:didFailWithError'));
> // 이벤트 생성
> if parent.respondsToSelector(sel_registerName(Pchar('onXferEvent:'))) then
> parent.onXferEvent(xsErr);
> end;
>
>end.
>
Edited by: simon choi on Sep 30, 2011 1:01 AM
|
0 |
|
simon
9/30/2011 8:01:41 AM
embarcadero.delphi.firemonkey
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