[svg-developers] EventListener problem with mapApp from Carto.net
Running under IE6 / ASV 3.0.3 I sometimes get the error object doesn't support this property or method line 69 column 2. The line is in MapApp.js and is document.documentElement.addEventListener (SVGScroll,this,false); The problem started occuring when I upgraded the code from 0.99 to 1.1. It only happens occasionally, and when it does it goes away on refresh. Anyone got any ideas on this problem? Thanks, Richard - To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click edit my membership Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[svg-developers] eventListener is a hoax
Hey folks, If you understood xml you would see that setAttribute(onclick myFunction()) is how you accomplish events. Gad! I've been seeing this eventListener thingie for years and it's about time it was removed from SVG!!! Francis - To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click edit my membership Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[svg-developers] eventListener crashing IE ????
I've been working with SVG for a while now and have encountered a very irritating bug. At least that what I think it is. Suddenly IE starts terminating on refresh or when trying to enter another http-address. I have tried to understand when the problem occurs and it seems to be after adding an eventListener. Does anyone know of any known bugs connected to the eventListener?? thx - To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click edit my membership Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [svg-developers] eventListener crashing IE ????
We've had some difficulties with this as well yes. The probleem seemed to go away when you deregister the eventlisteners onunload(). HTH Jorg skrellkolja wrote: I've been working with SVG for a while now and have encountered a very irritating bug. At least that what I think it is. Suddenly IE starts terminating on refresh or when trying to enter another http-address. I have tried to understand when the problem occurs and it seems to be after adding an eventListener. Does anyone know of any known bugs connected to the eventListener?? thx - To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click edit my membership Yahoo! Groups Links - To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click edit my membership Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [svg-developers] eventListener crashing IE ????
Hi:
I had the same problem. My IE crashed when I remove an element that has
an event associated with it.
(*)For instance, having:
var labelRectElement = document.createElementNS(svgNS,rect);
labelRectElement.addEventListener(mouseover,this,false);
//adding the labelRectElement to another node
var labelGroupElement = svgdoc.getElementById(labelGroup);
labelGroupElement.appendChild(labelRectElement);
(*)...when I try to do this (remove labelGroupElement):
labelGroupElement.parentNode.removeChild(labelGroupElement);
(*)..everything still working but when I reload the page or try to
change the URL to go to another site from the same window
my IE crashes. I guess internally some objects are still pointing to the
registered elements.
So I implemented a method that actually unregister any event from all
the childs nodes tree structure. It doesn't matter if an element
don't have an event associated, so it's safe to remove all anyway.
function removeChildElements(theParent, evtHandler) {
while((c = theParent.firstChild) != null) {
if (c.hasChildNodes()) {
removeChildElements(c, evtHandler); //recursive
} else {
if (c.nodeType == 1) {
c.removeEventListener(mousedown,evtHandler,false);
c.removeEventListener(mouseup,evtHandler,false);
c.removeEventListener(mouseover,evtHandler,false);
c.removeEventListener(mouseout,evtHandler,false);
c.removeEventListener(mousemove,evtHandler,false);
c.removeEventListener(click,evtHandler,false);
c.removeEventListener(keypress,evtHandler,false);
c.removeEventListener(SVGResize,evtHandler,false);
}
theParent.removeChild(c);
}
}
}
(*) So now I remove an element like this:
removeChildElements(labelGroupElement, this);
labelGroupElement.parentNode.removeChild(labelGroupElement);
(*)...and the IE don't crash anymore.
Hope that helps,
Renato F. Salas
Jorg Heymans wrote:
We've had some difficulties with this as well yes. The probleem seemed
to go away when you deregister the eventlisteners onunload().
HTH
Jorg
skrellkolja wrote:
I've been working with SVG for a while now and have encountered a very
irritating bug. At least that what I think it is.
Suddenly IE starts terminating on refresh or when trying to enter
another http-address. I have tried to understand when the problem
occurs and it seems to be after adding an eventListener.
Does anyone know of any known bugs connected to the eventListener??
thx
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Re: [svg-developers] eventlistener
Hi Olaf,
On 4 nov. 04, at 11:39, Olaf Schnabel wrote:
I have a simple question: is it possible to check the existence of an
eventlistener?
I added a listener with ECMAScript:
document.documentElement.addEventListener(keypress,this,false);
But now I want to remove the eventlistener, if it already exists (this
code of course doesn't work):
if (document.documentElement.eventListener == keypress)
{document.documentElement.removeEventListener(keypress,this,false);}
Any ideas?
What you can do is write your own method to add event listeners and
keep track of objects and what event listeners they have.
For what it's worth, you can always call removeEventListener even if
there are no event listeners. According to the DOM Level 2 specs, there
are no exceptions or errors thrown in the case where you're trying to
remove an event listener that isn't there.
Antoine
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SVG Consulting and Outsourcing
http://svg.org/user/graouts/diary
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Re: [svg-developers] eventlistener
hi olaf,
you could check the event attribute's value and decide on that what to
do next. if the eventhandler (eg. click) is not definded the according
attribute (eg. onclick) should be empty. or am i missing something here?
btw i stopped playing around with eventlisteners and use only the
according attributes. it's not cleaner but sometimes safer (on asv3).
andré
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Olaf Schnabel wrote:
Thanks Antoine.
It's no solution for me to generally remove it.
In some cases I need the event listener, in some cases I can remove it.
That's why I wanted to implement an if-else-statement.
It's a pity. Then I have to program my own methods :-(
Olaf
Antoine Quint wrote:
I have a simple question: is it possible to check the existence of an
eventlistener?
I added a listener with ECMAScript:
document.documentElement.addEventListener(keypress,this,false);
But now I want to remove the eventlistener, if it already exists (this
code of course doesn't work):
if (document.documentElement.eventListener == keypress)
{document.documentElement.removeEventListener(keypress,this,false);}
What you can do is write your own method to add event listeners and
keep track of objects and what event listeners they have.
For what it's worth, you can always call removeEventListener even if
there are no event listeners. According to the DOM Level 2 specs, there
are no exceptions or errors thrown in the case where you're trying to
remove an event listener that isn't there.
Antoine
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