DownloadProgress

DownloadProgress
	Special (optional) widgets

Name

DownloadProgress — Self-polling file growth progress indicator (optional widget)

Synopsis

`DownloadProgress (`	string	`label` ,
	string	`filename` ,
	integer	`expectedSize` `)`;

Parameters

string label: label above the indicator
string filename: file name with full path of the file to poll
integer expectedSize: expected final size of the file in bytes

Properties

string Label: the label above the progress indicator
string Filename: file name with full path of the file to poll
integer ExpectedSize: expected final size of the file in bytes

Description

This widget automatically displays the progress of a lengthy download operation. The widget itself (i.e. the UI) polls the specified file and automatically updates the display as required even if the download is taking place in the foreground.

Please notice that this will work only if the UI runs on the same machine as the file to download which may not taken for granted (but which is so for most users).

	Note
	This is a "special" widget, i.e. not all UIs necessarily support it. Check for availability with HasSpecialWidget( `DownloadProgress ) before using it.

Usage

 	if ( HasSpecialWidget( `DownloadProgress ) {...
 	`DownloadProgress( "Base system ( 230k )", "/tmp/aaa_base.rpm", 230*1024 );

Examples

          {
    if ( ! UI::HasSpecialWidget(`DownloadProgress) )
    {
	UI::OpenDialog(
		   `VBox( 
			 `Label("Error: This UI doesn't support the DownloadProgress widget!"),
			 `PushButton(`opt(`default), "&OK")
			 )
		   );
	UI::UserInput();
	UI::CloseDialog();
	
	return;
    }

    string  filename = "/suse/sh/.y2log";
    // string  filename = "/var/log/y2log";
    integer expected_size = 20 * 1024;

    UI::OpenDialog(
	       `VBox(
		     `DownloadProgress("YaST2 log file", filename, expected_size ),
		     `HSpacing(50), // force width
		     `PushButton(`opt(`default), "&Close")
		     )
	       );
    UI::UserInput();
    UI::CloseDialog();
}


Date		DumbTab