Thanks a lot :)
On Mon, Aug 1, 2011 at 12:36 AM, ramazan pekin <rep...@gmail.com> wrote:
> I removed "item.remove(listChoice);" from code and I just changed
> ListView definition, I used PropertyModel, and every thing working
> well...
>
> listView = new ListView<CategoryModel>("categoryList", categories) {
> -> I changed this line as below
> => listView = new ListView<CategoryModel>("categoryList", new
> PropertyModel<List<CategoryModel>>(this, "categories")) {
>
> On Mon, Aug 1, 2011 at 12:09 AM, ramazan pekin <rep...@gmail.com> wrote:
>> And this is CatogoryModel class:
>>
>> public class CategoryModel implements Serializable {
>>
>> private static final long serialVersionUID = 1L;
>>
>> private List<OmCategory> omCategories;
>>
>> private OmCategory selectedCategory;
>>
>> public CategoryModel(List<OmCategory> omCategories) {
>> this.omCategories = omCategories;
>> }
>>
>> public List<OmCategory> getOmCategories() {
>> return omCategories;
>> }
>>
>> public void setOmCategories(List<OmCategory> omCategories) {
>> this.omCategories = omCategories;
>> }
>>
>> public OmCategory getSelectedCategory() {
>> return selectedCategory;
>> }
>>
>> public void setSelectedCategory(OmCategory selectedCategory) {
>> this.selectedCategory = selectedCategory;
>> }
>>
>> }
>>
>>
>> On Mon, Aug 1, 2011 at 12:05 AM, ramazan pekin <rep...@gmail.com> wrote:
>>> Actually, as you said, when I add new bounded object to the collection
>>> new listChoice has been added to page, but whenever I tried to remove
>>> object from collection, related listChoice is not being removed from
>>> page. I have added wrapping container and I specified as target
>>> component to listChoice's onchange action. As result, I have added
>>> "item.remove(listChoice);" to code but this time, exception raised.
>>>
>>> I think I am using ListView wrongly, main problem looks like ListView
>>> related model object. This is my current markup file content.
>>>
>>> <body>
>>> <form wicket:id="form">
>>> <table wicket:id="categoryContainer">
>>> <tr>
>>> <td wicket:id="categoryList">
>>> <select wicket:id="category"/>
>>> </td>
>>> </tr>
>>> </table>
>>> <input type="submit" value="Submit"/>
>>> </form>
>>> </body>
>>>
>>> On Sun, Jul 31, 2011 at 11:02 PM, Christian Huber <hub...@butterbrot.org>
>>> wrote:
>>>> Hi,
>>>>
>>>> this is just a wild guess but in your code you have line that calls
>>>> "item.remove(listChoice);" under certain conditions and the listChoice
>>>> instance is bound to the category identifier which does not seem right to
>>>> me.
>>>>
>>>> As far as I understand ListViews the associated markup block is created for
>>>> each item. If you remove the listChoice from an item then Wicket has no
>>>> object to associate the markup with. So I think you cannot remove the
>>>> choice
>>>> that way.
>>>>
>>>> I have a similar use case where I also add and remove objects to and from
>>>> ListViews via Ajax and it was sufficient to just remove the object from the
>>>> collection that the ListView relies on and add the wrappign container to
>>>> the
>>>> ajax target.
>>>>
>>>> Since the listChoice is the only thing you add to an item I figure that
>>>> could also be feasible for your case but as said before this is just a
>>>> hunch.
>>>>
>>>> HTH, Chris
>>>>
>>>> --
>>>> The Sanity Resort <http://sanityresort.blogspot.com/>
>>>>
>>>> Am 31.07.2011 21:06, schrieb ramazan pekin:
>>>>>
>>>>> Hi to everyone,
>>>>>
>>>>> I am trying to generate dynamic form elements. I need to add and
>>>>> remove some components dynamically. I have added listChoice component
>>>>> succesfuly whenever user select a listChoice item, but when I tried to
>>>>> remove listChoice component, I received an error like that:
>>>>>
>>>>>
>>>>> org.apache.wicket.DefaultExceptionMapper.internalMap(DefaultExceptionMapper.java:102)
>>>>> - Unexpected error occurred
>>>>> org.apache.wicket.markup.MarkupException: Unable to find component
>>>>> with id 'category' in [ListItem [Component id = 1]]. This means that
>>>>> you declared wicket:id=category in your markup, but that you either
>>>>> did not add the component to your page at all, or that the hierarchy
>>>>> does not match.
>>>>> .....Page.html
>>>>> <td wicket:id="categoryList">
>>>>>
>>>>> <select wicket:id="category"></select>
>>>>> </td>, index = 2, current = '<select
>>>>> wicket:id="category">' (line 16, column 18)]
>>>>> at
>>>>> org.apache.wicket.markup.MarkupStream.throwMarkupException(MarkupStream.java:536)
>>>>>
>>>>>
>>>>> This is form code:
>>>>>
>>>>> public class DynamicForm extends Form {
>>>>>
>>>>> private static final long serialVersionUID = 1L;
>>>>>
>>>>> final ListView<CategoryModel> listView;
>>>>>
>>>>> private List<CategoryModel> categories;
>>>>>
>>>>> public DynamicForm(String id) {
>>>>> super(id);
>>>>>
>>>>> categories = new ArrayList<CategoryModel>();
>>>>> categories.add(new CategoryModel(masterCategories));
>>>>>
>>>>> final WebMarkupContainer listContainer = new
>>>>> WebMarkupContainer("categoryContainer");
>>>>> listView = new ListView<CategoryModel>("categoryList", categories) {
>>>>>
>>>>> private static final long serialVersionUID = 1L;
>>>>>
>>>>> @Override
>>>>> protected void populateItem(final ListItem<CategoryModel> item) {
>>>>> final CategoryModel category = item.getModelObject();
>>>>> ListChoice<OmCategory> listChoice = new ListChoice<OmCategory>(
>>>>> "category",
>>>>> new PropertyModel<OmCategory>(category, "selectedCategory"),
>>>>> masterCategories,
>>>>> new IChoiceRenderer<OmCategory>() {
>>>>> private static final long serialVersionUID = 1L;
>>>>>
>>>>> public Object getDisplayValue(OmCategory omCategory) {
>>>>> return omCategory.getCategoryCode().getLocalized();
>>>>> }
>>>>>
>>>>> public String getIdValue(OmCategory omCategory, int index) {
>>>>> return omCategory.getRowId();
>>>>> }
>>>>> }
>>>>> );
>>>>> listChoice.add(new AjaxFormComponentUpdatingBehavior("onchange") {
>>>>> private static final long serialVersionUID =
>>>>> 5417882427051940952L;
>>>>>
>>>>> @Override
>>>>> protected void onUpdate(AjaxRequestTarget target) {
>>>>> if(categories.size()> 1&& (categories.indexOf(category)
>>>>> + 1) != categories.size()) {
>>>>> categories = new
>>>>> ArrayList<CategoryModel>(categories.subList(0,
>>>>> (categories.indexOf(category) + 1)));
>>>>> }
>>>>> categories.add(new CategoryModel(masterCategories));
>>>>> target.add(listContainer);
>>>>> }
>>>>> });
>>>>> if(categories.indexOf(item.getModelObject()) != -1) {
>>>>> item.add(listChoice);
>>>>> } else {
>>>>> item.remove(listChoice);
>>>>> }
>>>>> }
>>>>> };
>>>>> listView.setOutputMarkupId(true);
>>>>> listContainer.add(listView);
>>>>> listContainer.setOutputMarkupId(true);
>>>>> add(listContainer);
>>>>> }
>>>>> }
>>>>>
>>>>>
>>>>> First time I am developing with wicket, and maybe I use wrongly. I'm
>>>>> new and any feedback is appreciated... Sorry for my english :)
>>>>>
>>>>> Br.
>>>>> Ramazan
>>>>>
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>>>>>
>>>>
>>>
>>
>
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