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2. Re: Generating menu items inside <rich:contextMenu> dynamica
you should not use not a4j nor ui repeat components. Use c:forEach instead or use component binding.
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3. Re: Generating menu items inside <rich:contextMenu> dynamica
Could you kindly explain why that approach does not work?
Also, component binding seems like an over kill as it is needed at just one place. I read at many places that using JSTL along with JSF is not advisable.
Could you please enlighten me on these? -
4. Re: Generating menu items inside <rich:contextMenu> dynamica
1) c:forEach will works fine in facelets envirenment.
http://www.ilikespam.com/blog/c:foreach-vs-ui:repeat-in-facelets - the difference.
if you do not using facelets - use binding. -
5. Re: Generating menu items inside <rich:contextMenu> dynamica
I managed it quite a bit with component binding. Thanks for the tip.
I have set up the actionExpression for each individual HtmlMenuItem component. The action method is invoked which I verify with a System.out.println(); statement.
Here is the code used to build the ContextMenu object.public ContextMenu getPopupMenu() { popupMenu = new ContextMenu(); List<HtmlMenuItem> components = new ArrayList<HtmlMenuItem>(); for (String string : destinations) { HtmlMenuItem item = new HtmlMenuItem(); item.setValue(string); MethodExpression expression = FacesContext.getCurrentInstance() .getApplication().getExpressionFactory() .createMethodExpression( FacesContext.getCurrentInstance().getELContext(), "#{dataContainer.show}", null, new Class<?>[0]); item.setActionExpression(expression); components.add(item); } popupMenu.getChildren().clear(); popupMenu.getChildren().addAll(components); return popupMenu; }
popupMenu is an instance reference.
But how do I determined which menu item was selected in the action method? Also, what is the reason for a4j:repeat not working inside context menu while it works perfectly inside components like a4j:outputPanel? -
6. Re: Generating menu items inside <rich:contextMenu> dynamica
"But how do I determined which menu item was selected in the action method?"
add parameters or use actionListener instead. -
7. Re: Generating menu items inside <rich:contextMenu> dynamica
Thanks that worked really well using ActionListener!
Could you please enlighten me on the reason for a4j:repeat not working inside context menu while it works perfectly inside components like a4j:outputPanel?
I have tried searching a lot but not getting any hint. :( -
8. Re: Generating menu items inside <rich:contextMenu> dynamica
hi,
i want to create a contextmenu dynamically for every line of a datatable. I used the code posted by chandru.in to creat the contextmenu. the xhtml is like this<rich:dataTable var="line" value="#{list}"> <rich:column> <t:graphicImage id="imgAction" value="#{line.actionImg}" /> <rich:contextMenu binding="#{line.lineContextMenu}" /> </rich:column> </rich:dataTable>
But i get a error like this:
binding="#{line.lineContextMenu}": Target Unreachable, identifier 'line' resolved to null
i want to know if we can use the contextmenu in this way?
Thanks in advance -
9. Re: Generating menu items inside <rich:contextMenu> dynamica
and what is inside your bean? have you initialized this variable?
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10. Re: Generating menu items inside <rich:contextMenu> dynamica
yes. i initialized this variable.
if i replace the binding of rich:contextMenu with value , like<rich:contextMenu value="#{line.lineContextMenu}" />
there is no exception, but contextmenu does not work simply.
if i use<h:outputText value="#{line.lineContextMenu}" />
I can see the object is created.
in the bean, i have the code is almost the same as the code of chandru.in shown above. -
11. Re: Generating menu items inside <rich:contextMenu> dynamica
Hi
I have the same problem as Iiumin Hu.
I would like to create a rich:contextMenu within each row of a rich:dataTable. The menu items of the context menu must be added dynamically (i.e. each row has different context menu entries).
This leads to a dilemma:
Dynamically adding menu items to a context menu is not possible using ui:repeat/a4j:repeat because rich:contextMenu only accepts rich:menuItem or rich:menuGroup as its children. Using c:forEach is not possible neither, because we are whithin a rich:dataTable and each row will have a different number of menu items within its context menu (i.e. different number of components in the component tree).
So I hoped the solution is to use the binding attribute of rich:contextMenu. But like Iiumin Hu, I get a an Exception telling me, that the element I use as binding target is unreachable:
javax.faces.FacesException: javax.el.PropertyNotFoundException: /path/to/my/page.xhtml binding="#{_row.contextMenu}": Target Unreachable, identifier '_row' resolved to nullThe relevant parts of the page look like this:
<rich:dataTable ... var="_row" ...>
<rich:column>
<f:facet name="header>...</f:facet>
<rich:contextMenu ... submitMode="ajax" binding="#{_row.contextMenu}" />
</rich:column>
...
</rich:dataTable>
Is there anybody having successfully resolved this problem?
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12. Re: Generating menu items inside <rich:contextMenu> dynamica
I have a same problem like Felix and liumin hu, but with dropdown menu.
When i remove column with menu it's renders fine, but when i put column back with <rich:dropDownMenu binding="#{item.menu}" it show a same exception from above.
This is mine method generating dropdown menu object in backing bean:
private void generateMenu()
{
menu = new UIDropDownMenu();
menu.setDirection(Positioning.bottomRight);
menu.setMode(Mode.server);
menu.setJointPoint(Positioning.topRight);
menu.setId("menuOdsjek" + odsjek.getId());
menu.setStyle("padding:0px;white-space: normal;");
HtmlCommandLink link = new HtmlCommandLink();
link.setTitle("Otvori stranicu odsjeka");
HtmlOutputText text = new HtmlOutputText();
text.setValue(odsjek.getNazivAt());
link.getChildren().add(text);
link.setId("linkOdsjek" + odsjek.getId());
FacesComponentFunkcije.addAction(link, "#{odsjeciForm.otvoriOdsjek}");
link.setStyle("font-size:11px;");
menu.getFacets().put("label", link);
}