I have 4 tabs. I want to prevent the user to get (with window.alert example) to another tab as it has not finished filling the current tab. After user finishes filling out all fields, a text will appear (saying he can move to the next tab) inside the current tab. And he will be able to click the tab below.
Should I use BeforeSelectionEvent handler or SelectionHandler?
i do this code to respond my question but is too long
is there a possibility to turn it into a short function ?
this.addBeforeSelectionHandler(new BeforeSelectionHandler<Integer>() {
public void onBeforeSelection(BeforeSelectionEvent<Integer> event) {
if (Application.get().getChampsObligatoire().values().contains("Fiche")) {
if (event.getItem().intValue() > 0){
event.cancel();
Window.alert("You must fill all fields before proceeding to the next step.");
}
}
if (Application.get().getChampsObligatoire().values().contains("projet")) {
if (event.getItem().intValue() > 1){
event.cancel();
Window.alert("You must fill all fields before proceeding to the next step.");
}
}
if (Application.get().getChampsObligatoire().values().contains("cibles")) {
if (event.getItem().intValue() > 2){
event.cancel();
Window.alert("You must fill all fields before proceeding to the next step.");
}
}
if (Application.get().getChampsObligatoire().values().contains("Ressources")) {
if (event.getItem().intValue() > 3){
event.cancel();
Window.alert("You must fill all fields before proceeding to the next step.");
}
}
if (Application.get().getChampsObligatoire().values().contains("Contrôle")) {
if (event.getItem().intValue() > 4){
event.cancel();
Window.alert("You must fill all fields before proceeding to the next step.");
}
}
}
});
For GWT TabPanel:
@Override
public boolean onBeforeTabSelected(SourcesTabEvents sender, int tabIndex)
{
String currentTabName = widget.getTabHTML(widget.getSelectedTab()); // for reference
String tabNameYouTryingToSelect = widget.getTabHTML(tabIndex); // for reference
// check some external self-written method and return true or false to allow/disallow selection
if (isCurrentlyActiveTabBuilt()){
return true;
} else {
Window.alert("You must fill all fields before proceeding to the next step.");
return false;
}
}