Hello everybody,
I want to use F-Keys for a certain functionality in my Application. It is a RAP
application, but that should not affect my problem. On the browser side I
listen to keydown events and notify the server side if a key is pressed. To
supress the browser processing I call keyEvent#preventDefault(), below is the
javascript that implements the described behaviour. On Firefox it works quite
well, but the same in IE shows the help window (F1), the search dialog (F3) or
drops down the URL combo (F4) when the keys are pressed. Is there any way to
suppress IE's handling of these events?
Regards,
Björn
Javascript code of the custom widget:
-------------------------------------
qx.Class.define( "my.product.internal.workbench.keybinding.KeyBinding", {
extend : qx.ui.layout.CanvasLayout,
construct : function() {
this.base( arguments );
var doc = qx.ui.core.ClientDocument.getInstance();
doc.addEventListener( "keydown", this._onKeyDown, this );
},
properties : {
interestingKeys : {
init : "",
apply : "setInteresting"
}
},
members : {
_onKeyDown : function( e ) {
this.debug("identifier: " + e.getKeyIdentifier());
// TODO: parse interesting keys and consider modifiers
var modifier = "";
if (e.isShiftPressed())
modifier += "SHIFT";
if (e.isCtrlPressed())
modifier += "CTRL";
if (e.isAltPressed())
modifier += "ALT";
if (e.isMetaPressed())
modifier += "META";
if( this.getInterestingKeys().indexOf("<" + e.getKeyIdentifier() +
">") > -1 ) {
var req = org.eclipse.swt.Request.getInstance();
var widgetManager = org.eclipse.swt.WidgetManager.getInstance();
var id = widgetManager.findIdByWidget( this );
req.addParameter( id + ".keyPressed", e.getKeyIdentifier());
req.addParameter( id + ".keyModifier", modifier);
e.preventDefault();
req.send();
}
},
setInteresting : function() {
//this.debug("setInterestingKeys: " + this.getInterestingKeys());
}
}
} );
--
---------------------------------------
Björn Fischer, M.Sc.
mail: [email protected]
fon: +49(0)234-94375-0
fax: +49(0)234-452206
web: http://www.t-p.com/
Triestram & Partner GmbH
Kohlenstrasse 55
44795 Bochum
Deutschland
Geschäftsführer: Reinhard Schymik
Beirat: Anselm Triestram
AG Bochum HRB 3090
USt.-Id. DE127082063
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