Hi Ben, Is there any reason why you couldn't just call treeItem.setWidget(b) ? That should change the tree item to the button widget and also properly register the click handlers on the button so that the handler is fired all the way out.
Hope that helps, -Sumit Chandel On Tue, Apr 21, 2009 at 9:50 AM, Ben FS <[email protected]> wrote: > > I'd like to dynamically insert a Widget into/next to a single > TreeItem, whenever a TreeItem is selected, but event handlers on the > Widget never fire when I do this. > > My approach so far: I dynamically manipulate the DOM of a single > TreeItem, when a selection event occurs. First I insert a DIV sibling, > and then I insert the Widget into that placeholder. Something like > this: > > Button b = new Button("Click me", new ClickHandler() { > public void onClick(ClickEvent event) { Window.alert("I was > clicked!"); } > }); > > Element itemDiv = treeItem.getElement(); // the TreeItem's underlying > element > Element spanEdit = DOM.createSpan(); // a container, perhaps this > is not necessary > DOM.appendChild(itemDiv, spanEdit); > > DOM.appendChild(spanEdit, b.getElement()); > > The button appears in the TreeItem when the TreeItem is selected, but > I am not able to generate any click events when I try to click on the > button with the mouse. I've also tried replacing the Button with > direct HTML, as follows: > > HTML h = new HTML("<a href='javascript:alert();'>Click me for alert</ > a>"); > > Once inserted into the TreeItem, on mouseover the browser status bar > shows the link target, but clicking on it does not generate a popup. > > My sense is that I need to do something else when I insert an Element > into the DOM, to ensure that it participates in the event handling > correctly. Yes? What else do I need to do? > > Perhaps the Tree's SelectionHandler is interfering - a mousedown on > anything within a tree's node triggers a selection event and no other > events are processed? > > Note: This used to work for me, using GWT 1.4.62, but even then only > when the inserted Widget was a Button (for all other Widget's that I > tried, the click event never reached the declared handler). > > Note: I would prefer to do all this without manipulating the DOM, but > there is a bug in TreeItem, since early version of GWT, that prohibits > me from dynamically removing and later replacing the TreeItem's > content. > http://code.google.com/p/google-web-toolkit/issues/detail?id=2297 > > Thanks for any help you can provide! > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
