2012-08-24 17:07 Europe/Helsinki: Robert Hanson: > On Fri, Aug 24, 2012 at 3:26 AM, Mikko Rantalainen > <[email protected]> wrote: >> Is it possible to configure JmolApplet to fetch the required files >> through the UA (web browser) instead of directly trying to connect the >> server? > > I believe so. If you can get it through AJAX, you are all set. Just > use Jmol-JSO. > You should create a new _Applet prototype function on your page: > > Jmol._Applet.prototype._getSecureFile = function(query, script){ > this._script("zap;set echo middle center;echo Retrieving data..."); > // script is necessary only if you need to do the post-load processing > var self = this; > Jmol._contactServer("?query=" + encodeURIComponent(query), > function(data){self._loadModel(data, ";" + script)}, > function(){alert("error...")} > ); > } > > and call that from your page link.
I didn't follow what you mean with "page link".
> Then be sure to set Info.serverURL to your server, not mine!
Sure. In fact, I used _ajax() directly and never even use serverURL. See
below.
> Info.serverURL needs to point to a PHP document on your server to
> process your request for the "query" -- just deliver the file contents
> as is. In this way, the actual data files need never be exposed. Only
> your PHP file needs exposure.
I wonder what I did wrong. Here's the code I'm trying to use:
<script>
// We'll need to call Jmol._ajax() but it's an internal
// method. We workaround the issue by adding a new
// public method to Jmol object that calls the internal
// method for us.
Jmol._Applet.prototype._loadModelIndirect = function(url, script)
{
this._script("zap;\
set echo middle center;\
echo Loading model via user agent...");
var self = this;
var info =
{
dataType: "text",
type: "GET",
url: url,
success: function(a)
{
Jmol._loadSuccess(a, function(data){
self._loadModel(data, ";"+script);
})
},
error: function()
{
Jmol._loadError(function(e){
alert("error: "+e)
})
},
async:Jmol._asynchronous
}
Jmol._ajax(info);
};
var Info = {
color: "#FFFFFF", // background color
width: "100%",
height: "100%",
script: "language=\u0022fi\u0022;",
use: "Java WebGL",
jarPath: "/path/to/jmol/13.0.1",
jarFile: "JmolApplet.jar",
isSigned: false,
//debug: true,
};
myJmol = Jmol.getApplet("JmolView", Info);
myJmol._loadModelIndirect("http://path/to/molecule.jmol";, "");
</script>
The URL in _loadModelIndirect() will return the actual data only if
correct "session-id" is passed as a cookie.
I see that the browser is correctly downloading the molecule
and Jmol._loadModel() will be called with first parameter set
to the contents of the file and second parameter is set to
an empty string.
I can then trace the execution to Jmol._Applet.prototype._loadModel() in
JmolApplet.js (from Jmol version 13.0.1) using Firefox 14 and
Firebug. The browser then executes
***
Jmol._Applet.prototype._loadModel = function(mol, params) {
var script = 'load DATA "model"\n' + mol + '\nEND "model" '
+ params;
this._applet.script(script);
}
***
Here the call 'this._applet.script()' will be passed a very long
string (around 170 KB):
'load DATA "model"\nMODEL_FILE_CONTENTS\nEND "model" ;'
where MODEL_FILE_CONTENTS is the actual file contents from correct .jmol
file (techically a ZIP archive).
Then nothing happens. The red message "Loading model via user
agent..." stays in the middle of the applet with zero CPU usage.
Do I need to do something else after calling Jmol._loadModel() inside
the ajax callback to get the model visible?
--
Mikko
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