Communicating With Browser
Communicating With Browser
- Subject: Communicating With Browser
- From: Zack Morris <email@hidden>
- Date: Sat, 6 Nov 2004 20:21:37 -0700
Hi, I am writing a utility that needs to send events back and forth
between the browser and an app. Right now I can put a link in the
browser like <a href="myApp://test">test</a> and when the user clicks
on it, it opens my app, and I use the AEGetURL() code at the bottom of
this email to bring up an alert with the URL "myApp://test". I would
also like to open the browser from within my app, using LaunchURL(
"\phttp://www.myurl.com/test.php"; ), a routine I have also put below.
But the problem is, if they have the URL already open in a window,
this causes it to reload, at least in Safari. This is unacceptible,
because they lose whatever info the have entered on the page. Is there
any way to tell the browser not to reload the page if it is already
open? Is there a way that perhaps I could check the current browser's
window, and if the page is already open, just bring that app/process to
the front? Could I put all of this into an apple event or applescript
perhaps? I did notice that if I put a random string on the end like
"http://www.myurl.com/test.php?junk=378456783456783478"; it opens the
page in a new window every time, which is less destructive, but still a
nuisance since the user has to close the new window. I wish I could
just call something like LaunchURL( "\phttp://www.myurl.com/test.php";,
kDoNotReloadIfOpen ), if such a thing existed. If I could construct
the raw Apple event that InternetConfig uses, that would work too.
Thanx,
------------------------------------------------------------------------
Zack Morris Z Sculpt Entertainment This Space
email@hidden http://www.zsculpt.com For Rent
------------------------------------------------------------------------
If the doors of perception were cleansed, everything would appear to man
as it is, infinite. -William Blake, The Marriage of Heaven and Hell
//----- ROUTINES -----
pascal OSErr AEGetURL( const AppleEvent *messagein, AppleEvent *reply,
long refIn )
{
#pragma unused( reply,refIn )
static char myURL[1100]; // static so we don't keep allocating it on
the stack
AEDescList docList;
OSErr myErr;
long itemsInList, index;
Size actualSize;
AEKeyword keywd;
DescType returnedType;
// get the direct parameter--a descriptor list--and put it
myErr = AEGetParamDesc( messagein, keyDirectObject, typeAEList,
&docList );
if( myErr )
{
ParamText( StrNum( myErr ) );
ErrorDialog( "\p(^0) AEGetParamDesc() failed." );
}
else
{
// count the number of descriptor records in the list
myErr = AECountItems( &docList, &itemsInList );
if( myErr ) ErrorDialog( "\pAECountItems() failed." );
else
{
// now get each descriptor record from the list,
// coerce the returned data to a c string
for( index = 0; index < itemsInList; index++ )
{
myErr = AEGetNthPtr( &docList, index+1, typeWildCard, &keywd,
&returnedType, &myURL, sizeof( myURL ), &actualSize );
if( !myErr ) AlertDialog( myURL );
}
}
}
return( noErr );
}
OSStatus LaunchURL( ConstStr255Param urlStr )
{
if( ICStart )
{
ICInstance inst;
OSStatus theErr;
long startSel;
long endSel;
theErr = ICStart( &inst, APPL.creatorCode );
if( theErr == noErr )
{
startSel = 0;
endSel = urlStr[0];
theErr = ICLaunchURL( inst, nil, (char *) &urlStr[1], urlStr[0],
&startSel, &endSel );
ICStop( inst );
}
return( theErr );
}
return( icInternalErr );
}
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