Hi! To be short, I have a <h:dataTable> filled by values from a list.
For each row/item the user can press a "view details" button, which opens a popup with the javascript-function window.open(). The user is also given the possibility to open several popups at a time to provide support for comparing to or more rows to each other (the names of the popups are unique). My "challenge" is that I need a way to set and respect a limit of number of popups allowed. My commandLinks should render differently based on this condition. if (currentNumberOfPopups < popupLimit) commandLink opens a new popup window with row details if (currentNumberOfPopups >= popupLimit) commandLink opens a popup saying that the popupLimit has been reached. If limit is reached and the user close one of the existing popup windows, it should be possible to open new popups. The condition set on the commandLinks therefore enforces a refresh of my parent page whenever a new popup is created or if a popup is closed. If the limit is reached the user is also presented with an error message on top of the parent page. Ok, and this is what I've tried to do so far: I have a bean with a HashMap and the attributes currentNumberOfPopups and popupLimit (both ints). When I open a new popup I put a reference of it into the HashMap, thus keeping track of the popups that are opened (and the number of popups of course). I also execute a javascript function that clicks a hidden button in my parent page, and this button is implemented with ajax a4j to refresh the view to be up to date with the changes. To handle the closing of a popup I have an unload event that fires only if users have pressed the 'X' button or if they have pressed a "close" commandButtoon. (to manage this I had to go for an IE only solution, but i'm okay with that for now). A refresh of the page does not fire this event. This event basically removes the reference from the HashMap, and then clicks the same refresh-button as was clicked when opening. My problem is: This way of doing it doesn't seem to be "accurate" enough. Sometimes (for no reason) the parent view doesn't refresh as it should (commandLinks are'nt updated), and I've also experienced that my counter gets out of sync with the actual number of popups open. This results in the error-popup to be opened when it shouldn't have been opened. Does anybody see another/a better way of handling this? How to respect a popup limit? Any ideas / new approaches would have been appreciated. I've been thinking of having a global array in javascript that holds the handlers to the popup-windows, and then somehow manage the rendering based on the size of this array, but the problem is that when I refresh the parent page this array is reset as well, so I cannot go down that path. Regards, Eivind
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