Thank you John! That makes total sense. I have taken a month or two off from coding and forgot about the pointerdown transition.
Your demo http://tinyurl.com/jbkl8ac: also surprised me. I have always thought that I had to re-create the entire contents of the overridden function - I didn't know it was possible to only switch the component you're after; in this case, the selector-button. This will help immensely in my future endeavors. Thanks for the tips and hope you have a great year!! Jonathan On Sat, Jan 2, 2016 at 5:43 AM, John Spackman <john-li...@zenesis.com> wrote: > Hi Jonathan > > The problem is that _onFieldMouseDown does not exist – it looks like your > example code is out of date, because since Qx 4.x there’s been a transition > to “pointerxxxx” events over “mouse” events to better support mobile & > tablets. In qx.ui.control.ColorPopup, _onFieldMouseXxxx has also changed > to _onFieldPointerXxxx. EG your code should be: > > case "field": > > control = new qx.ui.core.Widget; > > control.addListener("pointerdown", this._onFieldPointerDown, > this); > > control.addListener("pointerover", this._onFieldPointerOver, > this); > > control.addListener("pointerout", this._onFieldPointerOut, this > ); > > break; > > However, you don’t need to repeat the entire contents of the overridden > function (and it would be preferable not to, so that the implementation of > the parent class can change without impacting your code) because in this > case you can defer to this.base(arguments, id) to get the controls, and > only modify the one that you want to. Here’s another version: > http://tinyurl.com/jbkl8ac > > Regards > John > > From: Jonathan Wolfe <jonathan.wo...@noaa.gov> > Reply-To: qooxdoo Development <qooxdoo-devel@lists.sourceforge.net> > Date: Friday, 1 January 2016 at 19:08 > To: qooxdoo Development <qooxdoo-devel@lists.sourceforge.net> > Subject: [qooxdoo-devel] Override issue > > Hi, > > I am trying to implement just the ColorSelector window which appears after > selecting the "Open ColorSelector" button in the qx.ui.control.ColorPopup. > So, I thought I would extend the ColorPopup class and just override the > _createChildControlImpl function so that the ColorSelector appears > automatically; however when I do this, I am getting this error: > > 023800 Assertion error! Failed to add event listener for type 'mousedown' > to the target 'qx.ui.core.Widget': Invalid callback function: Expected > value to be typeof function but found 'undefined'! > > Uncaught Failed to add event listener for type 'mousedown' to the target > 'qx.ui.core.Widget': Invalid callback function: Exception while creating > child control 'field#0' of widget edd.JQx.ColorSelector[9954-0]: Expected > value to be typeof function but found 'undefined'! > > > *Here is my code snippet:* > > qx.Class.define("edd.JQx.ColorSelector", > { > extend : qx.ui.control.ColorPopup, > members : > { > > // overridden > _createChildControlImpl : function(id, hash) > { > this.base(arguments); > var control; > switch(id) > { > case "field": > control = new qx.ui.core.Widget; > control.addListener("mousedown", this._onFieldMouseDown, > this); // <------------- Fails here > > > > I thought that the this._onFieldMouseDown would be brought along in the > extension, but maybe this has something to do with two arguments being > passed to the _createChildControlImpl function and I'm not capturing it > properly? Any pointers would be greatly appreciated! Thanks and Happy New > Year! > > Jonathan > ------------------------------------------------------------------------------ > _______________________________________________ qooxdoo-devel mailing list > qooxdoo-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel > > > ------------------------------------------------------------------------------ > > _______________________________________________ > qooxdoo-devel mailing list > qooxdoo-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel > >
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