What the hell did you need 2300 nodes for??? But good to know!! Cheers, Raju
------------------------ -----Original Message----- From: Norman Klein <[email protected]> Date: Fri, 12 Mar 2010 08:10:04 To: Rami Ojares<[email protected]>; <[email protected]> Subject: Re: [Laszlo-user] Mouse performance Once upon a time, I used opttree (actually checktree that is based on opttree) to implement a tree that contained approximately 2300 nodes and didn't encounter any mouse degradation issues. You might want to take a look at the opttree code and how they implemented things. Norman Klein Author: Laszlo in Action On Fri, Mar 12, 2010 at 3:34 AM, Rami Ojares <[email protected]> wrote: > Allright I tried the following handler for my TreeNodes > > <handler name="onvisible" args="visible"><![CDATA[ > > if (!this.inited) return; > > //var count = 0; > > var allSubnodes = GET_ALL_SUBNODES(this.subnodes); > if (allSubnodes==null) return; > > for(var i=0; i<allSubnodes.length; i++) { > > var delegates = allSubnodes[i].__LZdelegates; > if (delegates == null) continue; > > for(var j=0; j<delegates.length; j++) { > var del = delegates[j]; > //count++; > if (visible) del.enable(); > else del.disable(); > } > } > > //Debug.debug("%w delegates %w", count, visible ? "enabled" : > "disabled"); > ]]></handler> > > No effect. > The unregistering MIGHT have had some effect but I am not sure anymore. > > The only thing I have really found to have an impact on the performance is > destroying the objects. > But I discarded the creation/destroying strategy long time ago because it > was way too inefficient. > More and more I have been building object pools so I would not have to > create objects so often. > > Can you Tucker say does disabling/enabling of delegates have any > performance gain? > > So the lesson seems to be this: > "If you have a lot of views/objects your mouse performance starts to > choke." > Solution: > "Try not to have a lot of objects." > > The only way out I can see now is to start stripping off features of my > TreeNodes. > > - rami > > On 11.3.2010 19:56, P T Withington wrote: > >> What platform are you compiling to? I recall there is a Flash player bug >> that bit G.ho.st that had something like what you describe. >> >> But also, I have to wonder if something with 100's of sub-menus doesn't >> need a different approach. I wonder how a human navigates such a large >> space. >> >> On Mar 10, 2010, at 17:48, Rami Ojares <[email protected]> wrote: >> >> Hi, >>> >>> I have a tree structure (branches and leaves). >>> All of them react to various mouse events (mouseover, mousedown, >>> mousetrackover etc.) >>> I have implemented a mechanism where I initially load/construct only the >>> first level of nodes. >>> Everything works fine and with good performance. >>> When I keep opening branches (some of which have over hundred subnodes) >>> the mouse event performance starts to choke. >>> >>> So I thought that whenever a node is not visible I disable all the >>> delegates handling the mouse events. >>> No effect. >>> Then I tried unregistering the delegates when the node is not visible. >>> No effect. >>> Then I tried to set the clickable attribute to false for all the views >>> that react to mouse events. >>> No effect. >>> >>> Any suggestions? >>> >>> - rami >>> >> >
