home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
PC World 2000 December
/
PCWorld_2000-12_cd.bin
/
Komunikace
/
mozilla
/
mozilla-win32-M18-mathml-svg-xslt.exe
/
chrome
/
toolkit
/
content
/
global
/
helperAppDldProgress.js
< prev
next >
Wrap
Text File
|
2000-10-04
|
11KB
|
345 lines
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code,
* released March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*
* Contributors:
* William A. ("PowerGUI") Law <law@netscape.com>
* Scott MacGregor <mscott@netscape.com>
*/
// dialog is just an array we'll use to store various properties from the dialog document...
var dialog;
// the helperAppLoader is a nsIHelperAppLauncher object
var helperAppLoader;
// random global variables...
var started = false;
var completed = false;
var startTime;
// since this progress dialog is brought up after we've already started downloading, we need to record the # bytes already
// downloaded before we started showing progress. This is used to make sure our time remaining calculation works correctly...
var initialByteOffset;
var elapsed;
var interval = 1000; // Update every 1000 milliseconds.
var lastUpdate = -interval; // Update initially.
// These are to throttle down the updating of the download rate figure.
var priorRate = 0;
var rateChanges = 0;
var rateChangeLimit = 2;
var warningLimit = 30000; // Warn on Cancel after 30 sec (30000 milleseconds).
// all progress notifications are done through our nsIWebProgressListener implementation...
var progressListener = {
onStateChange: function(aWebProgress, aRequest, aStateFlags, aStatus)
{
if (aStateFlags & Components.interfaces.nsIWebProgressListener.STATE_STOP)
{
// we are done downloading...
completed = true;
// Indicate completion in status area.
var msg = getString( "completeMsg" );
msg = replaceInsert( msg, 1, formatSeconds( elapsed/1000 ) );
dialog.status.setAttribute("value", msg);
// Put progress meter at 100%.
dialog.progress.setAttribute( "value", 100 );
dialog.progress.setAttribute( "mode", "normal" );
try {
// Close the window in 2 seconds (to ensure user sees we're done).
window.setTimeout( "window.close();", 2000 );
}
catch ( exception )
{
dump( "Error setting close timeout\n" );
// OK, try to just close the window immediately.
window.close();
// If that's not working either, change button text to give user a clue.
dialog.cancel.childNodes[0].nodeValue = "Close";
}
}
},
onProgressChange: function(aWebProgress, aRequest, aCurSelfProgress, aMaxSelfProgress, aCurTotalProgress, aMaxTotalProgress)
{
// Check for first time.
if ( !started )
{
// Initialize download start time.
started = true;
startTime = ( new Date() ).getTime();
initialByteOffset = aCurTotalProgress;
}
var overallProgress = aCurTotalProgress;
aCurTotalProgress -= initialByteOffset;
// Get current time.
var now = ( new Date() ).getTime();
// If interval hasn't elapsed, ignore it.
if ( now - lastUpdate < interval && aMaxTotalProgress != "-1" && eval(aCurTotalProgress) < eval(aMaxTotalProgress) )
return;
// Update this time.
lastUpdate = now;
// Update download rate.
elapsed = now - startTime;
var rate; // aCurTotalProgress/sec
if ( elapsed )
rate = ( aCurTotalProgress * 1000 ) / elapsed;
else
rate = 0;
// Update elapsed time display.
dialog.timeElapsed.setAttribute("value", formatSeconds( elapsed / 1000 ));
// Calculate percentage.
var percent;
if ( aMaxTotalProgress != "-1" )
{
percent = parseInt( (overallProgress*100)/aMaxTotalProgress + .5 );
if ( percent > 100 )
percent = 100;
// Advance progress meter.
dialog.progress.setAttribute( "value", percent );
}
else
{
percent = "??";
// Progress meter should be barber-pole in this case.
dialog.progress.setAttribute( "mode", "undetermined" );
}
// now that we've set the progress and the time, update # bytes downloaded...
// Update status (nnK of mmK bytes at xx.xK aCurTotalProgress/sec)
var status = getString( "progressMsg" );
// Insert 1 is the number of kilobytes downloaded so far.
status = replaceInsert( status, 1, parseInt( overallProgress/1024 + .5 ) );
// Insert 2 is the total number of kilobytes to be downloaded (if known).
if ( aMaxTotalProgress != "-1" )
status = replaceInsert( status, 2, parseInt( aMaxTotalProgress/1024 + .5 ) );
else
status = replaceInsert( status, 2, "??" );
if ( rate )
{
// rate is bytes/sec
var kRate = rate / 1024; // K bytes/sec;
kRate = parseInt( kRate * 10 + .5 ); // xxx (3 digits)
// Don't update too often!
if ( kRate != priorRate )
{
if ( rateChanges++ == rateChangeLimit )
{
// Time to update download rate.
priorRate = kRate;
rateChanges = 0;
}
else
{
// Stick with old rate for a bit longer.
kRate = priorRate;
}
}
else
rateChanges = 0;
var fraction = kRate % 10;
kRate = parseInt( ( kRate - fraction ) / 10 );
// Insert 3 is the download rate (in kilobytes/sec).
status = replaceInsert( status, 3, kRate + "." + fraction );
}
else
status = replaceInsert( status, 3, "??.?" );
// Update status msg.
dialog.status.setAttribute("value", status);
// Update percentage label on progress meter.
var percentMsg = getString( "percentMsg" );
percentMsg = replaceInsert( percentMsg, 1, percent );
dialog.progress.progresstext = percentMsg;
// Update time remaining.
if ( rate && aMaxTotalProgress != "-1" )
{
var rem = ( aMaxTotalProgress - aCurTotalProgress ) / rate;
rem = parseInt( rem + .5 );
dialog.timeLeft.setAttribute("value", formatSeconds( rem ));
}
else
dialog.timeLeft.setAttribute("value", getString( "unknownTime" ));
},
onLocationChange: function(aWebProgress, aRequest, aLocation)
{
// we can ignore this notification
},
onStatusChange: function(aWebProgress, aRequest, aStatus, aMessage)
{
if (aMessage)
dialog.status.setAttribute("value", status);
},
onSecurityChange: function(aWebProgress, aRequest, state)
{
}
};
function getString( stringId ) {
// Check if we've fetched this string already.
if ( !dialog.strings[ stringId ] ) {
// Try to get it.
var elem = document.getElementById( "dialog.strings."+stringId );
try {
if ( elem
&&
elem.childNodes
&&
elem.childNodes[0]
&&
elem.childNodes[0].nodeValue ) {
dialog.strings[ stringId ] = elem.childNodes[0].nodeValue;
} else {
// If unable to fetch string, use an empty string.
dialog.strings[ stringId ] = "";
}
} catch (e) { dialog.strings[ stringId ] = ""; }
}
return dialog.strings[ stringId ];
}
function formatSeconds( secs )
{
// Round the number of seconds to remove fractions.
secs = parseInt( secs + .5 );
var hours = parseInt( secs/3600 );
secs -= hours*3600;
var mins = parseInt( secs/60 );
secs -= mins*60;
var result;
if ( hours )
result = getString( "longTimeFormat" );
else
result = getString( "shortTimeFormat" );
if ( hours < 10 )
hours = "0" + hours;
if ( mins < 10 )
mins = "0" + mins;
if ( secs < 10 )
secs = "0" + secs;
// Insert hours, minutes, and seconds into result string.
result = replaceInsert( result, 1, hours );
result = replaceInsert( result, 2, mins );
result = replaceInsert( result, 3, secs );
return result;
}
function loadDialog() {
var sourceUrlValue = {};
var targetFile = helperAppLoader.getDownloadInfo(sourceUrlValue);
var sourceUrl = sourceUrlValue.value;
dialog.location.setAttribute("value", sourceUrlValue.value.spec );
dialog.fileName.setAttribute( "value", targetFile.unicodePath );
}
function replaceInsert( text, index, value ) {
var result = text;
var regExp = eval( "/#"+index+"/" );
result = result.replace( regExp, value );
return result;
}
function onLoad() {
// Set global variables.
helperAppLoader = window.arguments[0];
if ( !helperAppLoader ) {
dump( "Invalid argument to downloadProgress.xul\n" );
window.close()
return;
}
dialog = new Object;
dialog.strings = new Array;
dialog.location = document.getElementById("dialog.location");
dialog.contentType = document.getElementById("dialog.contentType");
dialog.fileName = document.getElementById("dialog.fileName");
dialog.status = document.getElementById("dialog.status");
dialog.progress = document.getElementById("dialog.progress");
dialog.timeLeft = document.getElementById("dialog.timeLeft");
dialog.timeElapsed = document.getElementById("dialog.timeElapsed");
dialog.cancel = document.getElementById("dialog.cancel");
// Set up dialog button callbacks.
var object = this;
doSetOKCancel("", function () { return object.onCancel();});
// Fill dialog.
loadDialog();
// set our web progress listener on the helper app launcher
helperAppLoader.setWebProgressListener(progressListener);
moveToAlertPosition();
}
function onUnload()
{
// Cancel app launcher.
if (helperAppLoader)
{
try
{
helperAppLoader.closeProgressWindow();
helperAppLoader = null;
}
catch( exception ) {}
}
}
// If the user presses cancel, tell the app launcher and close the dialog...
function onCancel ()
{
// Cancel app launcher.
if (helperAppLoader)
{
try
{
helperAppLoader.Cancel();
}
catch( exception ) {}
}
// Close up dialog by returning true.
return true;
}