Hi Luc,
the problem is in your base call.
--snip--
// wrong
this.base(this.caption);
// right
this.base(arguments, this.caption);
--snip--
You always have to provide the "arguments" if you want to call the super class
constructor.
Regards,
Alex
On Thursday March 10 2011 15:31:34 Luc Saffre wrote:
> Beginner's question: Where's the bug? I'm giving up for today, after
> several hours of hunting. Now I post the relevant code snippets in the
> hope that some veteran finds my mistake at a glance...
>
> qx.Class.define("lino.TableWindow",
> {
> extend : qx.ui.window.Window,
>
> construct : function(app) {
> console.log('lino.TableWindow.construct()',this,app);
> this.base(this.caption);
> console.log('lino.TableWindow.construct.base ok');
> this.__app = app;
> ...
> }
>
> qx.Class.define("lino.CountriesCitiesTable", {
> extend : lino.TableWindow,
> members : {
> caption : 'Städte',
> ...
> }
>
> qx.Class.define("lino.Application", {
> extend : qx.application.Standalone,
>
> members : {
> showWindow : function(cls) {
> console.log('lino.Application.showWindow',cls);
> var win = new cls(this);
> win.open();
> this.getRoot().add(win, {left: 50, top: 10});
> },
> setupMainMenu : function() {
> ...
> var b = new qx.ui.menu.Button("Cities"); m.add(b);
> b.addListener('execute',function() {
> this.showWindow(lino.CountriesCitiesTable)},this);
> ...
> }
>
> The console output in Google Chrome is::
>
> lino.Application.showWindow [Class lino.CountriesCitiesTable]
> lino.TableWindow.construct() bT bT
> Uncaught TypeError: Cannot read property 'base' of undefined
>
> when I expand the two "bT", their basenames are 'CountriesCitiesTable'
> and 'Application', as expected.
>
> Here is also the line of code which throws the error in Object.js:127::
>
> if (!qx.Bootstrap.isFunction(args.callee.base)) {
>
> Thanks for any feedback.
> Luc
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