[Laszlo-dev] For Review: Change 20090603-hqm-U Summary: fix for text selection in DHTML

[André Bargull]

Maybe it works to cancel selection if it starts on a non-selectable element.

 > // prevent text selection in IE
 > // can't use lz.embed.attachEventHandler because we need to cancel events
 > if (LzSprite.prototype.quirks.ie_prevent_selection) {
 > document.onselectstart = function () {
 >     var src = window.event.srcElement;
 >     if (src.owner instanceof LzTextSprite) {
 >         if (! src.owner.selectable) {
 >             // Debug.write("prevent selection on non-selectable text")
 >             return false;
 >         }
 >     } else {
 >         // Debug.write("prevent selection on non-text")
 >         return false;
 >     }
 > }
 > }



On 6/6/2009 6:27 PM, Henry Minsky wrote:
> 
> 
>     And one bug in IE:
>     Also open the component sampler, mouse down and then move cursor
>     while still holding the mouse button.
>     Expected: no text selection
>     Actual: text selection for all text elements
>     Apparently global onselectstart and ondrag were canceled in
>     "LzInputTextSprite.js" to avoid this behaviour, cf. [3].
> 
> 
> But having that code in LzInputTextSprite:
> 
>   document.onselectstart = LzTextSprite.prototype.__cancelhandler;
>   document.ondrag =  LzTextSprite.prototype.__cancelhandler;
> 
>  causes text selection to stop working in globally in IE7, and Safari/OSX.
> 
> (Actually,  inputtext selection still works in Safari for some reason 
> with this code, but
> regular selectable non-input text cannot be selected )
> 
> Do you have any ideas how we can keep text selection working in 
> IE7/Safari but
> not have the unwanted selection of everything?
>