What wicket version are you using? -Matej
On 6/14/07, Seldon, Richard <[EMAIL PROTECTED]> wrote: > > Experiencing a wicket problem to do with UI state corruption when using ajax > tabbed panel. When the ajax links are rapidly clicked in succession various > validation errors appear relating to panels that are hidden, form component > drop downs lose their display UI values and UI state basically becomes > "v.confused". Have not observed this behavior elsewhere but somehow it seems > like the ajax requests are not stacking correctly or at least are losing > synch with the UI rerendering somehow. > > Below are all the steps (in brevity) so far attempted and some unanswered > questions I still have:- > > (1) Tried IAjaxIndicatorAware on individual form components and overridden > tabbed panel links. Used this in conjunction with a server side request > throttler. Basically wrote a timer class that intercepts onsubmit requests > and rejects (returns without processing further) on any entered with given 2 > second interval using standard Java api class implementations. This > approach does actually work but doesn't explain why we're having this > problem in first place? > > (2) Tried a DIV interceptor approach hooking into > Wicket.Ajax.registerPreCallHandler, postcall, and failure. The idea was to > cover the entire screen with a transparent div whilst asynch call being > made - however, problematic using IE 6 but works with firefox. Essentially, > seems IE deals with windowed and windowless components and certain html > form components are windowed such as select. z-indexes are not respected > between the two types and therefore setting div z-index higher than select > z-index doesn't work. tried workaround using an iframe (which covers both > z-indexes in IE6) but iframe transparency issues meant access to underlying > form component. > > (3) Looked at wicket-ajax.js - was interested with configuration of the > channels settings - but unsure how to get an appropriate configuration fix. > There is an indicator between setting which gets read by reading out of a > regex a character value of either 'd' or 's' where from what i can see 's' > ensures requests are stacked. Found some help in an older newsgroup which > mentions that "{wicket has "ajax channels" with different channel modes such > as queue/disregard. that way you can disable certain groups of components > only by assigning them to the same ajax channel.}" Looking at the wicket > java api i couldn't manage to find any handle to setting this flag up. Is > this a direct wicket-ajax.js edit and if so then my question would be "What > is an "elegant" way to override the default to use 'd'?" > > (4) Finally, switched the asynch flag to "false" by editing wicket-ajax.js > directly (this.type in request prototype class). This resolved the original > problem but uncertain what the consequences of doing this are. Is this safe > and is there any Java api accessible means to do this? In firefox by > inspecting ajax responses via an ajax plugin, it seemed to indicate ajax > requests yet the page is flickering on rerender much like a full page > resubmission would. Does ajax submission still work or is it the main UI > thread that now handles form submissions? > > > This e-mail (and any attachments) may contain privileged and/or confidential > information. If you are not the intended recipient please do not disclose, > copy, distribute, disseminate or take any action in reliance on it. If you > have received this message in error please reply and tell us and then delete > it. Should you wish to communicate with us by e-mail we cannot guarantee the > security of any data outside our own computer systems. 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