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Date: Sun, 10 Feb 2013 22:23:20 +0100
From: Michael Jaruska <michael.jaruska@gmail.com>
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To: users@wicket.apache.org
Subject: Re: find html tag
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again with my question: is it possible to get markup in onRender() of the component?
have found this article:
https://cwiki.apache.org/WICKET/component-rendering.html
but in onRender() section is just code snippet I'm not understand. is there more
detailed example how to get markup of the component in onRender()?

thanks, michael


On 23.1.2013 22:47, Martin Grigorov wrote:
> You can use IMarkupFilter to manipulate the raw markup before being loaded
> and used by the components.
> See the implementations in Wicket to see what can be done with such filter.
>
>
> On Wed, Jan 23, 2013 at 11:11 PM, Michael Jaruska <michael.jaruska@gmail.com
>> wrote:
>
>> Look at my original post. User clicks on <a href="./mypage.html?cid=menu/*
>> *submenu/subsubmenu2">**subsubmenu2</a>, then
>> I have in String "category" (java code) value "menu/submenu/subsubmenu2".
>> I need just to make 2 more steps:
>> 1. in html code find anchor tag with href "menu/submenu/subsubmenu2";
>> 2. find <li> tag which is parent of the anchor from point 1;
>>
>> When I have point 2 done, then I know how to put somethink into <li> tag...
>>
>>
>>
>>
>> On 23.1.2013 21:21, Bas Gooren wrote:
>>
>>> Ok, so you are indeed looking for a way to change a html attribute ;-)
>>>
>>> Since you wrote (in your folluw-up e-mail) that you cannot generate the
>>> html, there are some ways, but they mostly work outside of the normal
>>> wicket way.
>>>
>>> 1) In the component which actually renders your static html override
>>> onComponentTagBody and fiddle with the markup stream (e.g. look at
>>> replaceComponentTagBody)
>>>
>>> 2) store the static html somewhere by itself, and create a custom model.
>>> The model can then load the html and perform string replacement.
>>> You can then add a label component which uses the model and has
>>> setEscapeModelStrings(false) set.
>>>
>>> Met vriendelijke groet,
>>> Kind regards,
>>>
>>> Bas Gooren
>>>
>>> Op 23-1-2013 21:11, schreef Michael Jaruska:
>>>
>>>> I need to find the parent <li> tag of the anchor user clicks - I now
>>>> from PageParameters which anchor
>>>> has been clicked. Then I will put into this parent <li> specific
>>>> atribute (id="something"). This attribute
>>>> will be then processed by JavaScript on the page.
>>>>
>>>>
>>>> On 23.1.2013 21:04, Bas Gooren wrote:
>>>>
>>>>> Sorry, I read too quickly.
>>>>>
>>>>> What are you trying to accomplish? Let's say you are able to find the
>>>>> appropriate html tag, what do you want to do with it?
>>>>>
>>>>> Met vriendelijke groet,
>>>>> Kind regards,
>>>>>
>>>>> Bas Gooren
>>>>>
>>>>> Op 23-1-2013 21:01, schreef Michael Jaruska:
>>>>>
>>>>>> And question is not "how can I change html attribute" but "how can I
>>>>>> go through html structure" and
>>>>>> find html tag with specific attribute :-)
>>>>>>
>>>>>>
>>>>>> On 23.1.2013 20:50, Bas Gooren wrote:
>>>>>>
>>>>>>> Hi!
>>>>>>>
>>>>>>> What you want to accomplish (e.g. changing some html attributes) can
>>>>>>> be done by adding an attributemodifier to each <li> component.
>>>>>>>
>>>>>>> In pseudocode:
>>>>>>>
>>>>>>> RepeatingView uls = ...
>>>>>>> for_every_li:
>>>>>>> WebMarkupContainer li = ...
>>>>>>> uls.add(li);
>>>>>>>
>>>>>>> now, you can do something like this:
>>>>>>> li.add(new AttributeAppender(...) {
>>>>>>>       isEnabled() {
>>>>>>>           return true if you want to append a html attribute;
>>>>>>>       }
>>>>>>> });
>>>>>>>
>>>>>>> Or alternatively:
>>>>>>>
>>>>>>> WebMarkupContainer li = new WMC() {
>>>>>>>       onComponentTag(ComponentTag tag) {
>>>>>>>           super(tag);
>>>>>>>
>>>>>>>           tag.put("my-html-attribute", value);
>>>>>>>       }
>>>>>>> }
>>>>>>>
>>>>>>> Met vriendelijke groet,
>>>>>>> Kind regards,
>>>>>>>
>>>>>>> Bas Gooren
>>>>>>>
>>>>>>> Op 23-1-2013 20:45, schreef Michael Jaruska:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> is there a way I can find specific html tag in markup?
>>>>>>>>
>>>>>>>> I have this html structure:
>>>>>>>> <ul class="mymenu">
>>>>>>>>    <li>
>>>>>>>>      <a href="./mypage.html?cid=menu">**menu</a>
>>>>>>>>    <ul>
>>>>>>>>      <li>
>>>>>>>>        <a href="./mypage.html?cid=menu/**submenu">submenu</a>
>>>>>>>>      <ul>
>>>>>>>>        <li>
>>>>>>>>          <a href="./mypage.html?cid=menu/**submenu/subsubmenu1">**
>>>>>>>> subsubmenu1</a>
>>>>>>>>        </li>
>>>>>>>>        <li>
>>>>>>>>          <a href="./mypage.html?cid=menu/**submenu/subsubmenu2">**
>>>>>>>> subsubmenu2</a>
>>>>>>>>        </li>
>>>>>>>>        <li>
>>>>>>>>          <a href="./mypage.html?cid=menu/**submenu/subsubmenu3">**
>>>>>>>> subsubmenu3</a>
>>>>>>>>        </li>
>>>>>>>>      </ul>
>>>>>>>>    </ul>
>>>>>>>> </ul>
>>>>>>>>
>>>>>>>> I'm processing clicks on anchors with my page:
>>>>>>>> public PageTest(PageParameters parameters){
>>>>>>>>    //cid = category id
>>>>>>>>    String category = parameters.get("cid").**toString();
>>>>>>>>    ...
>>>>>>>> }
>>>>>>>>
>>>>>>>> Now I need some way I can add atribute into parent <li> tag of <a>
>>>>>>>> tag on which I do click.
>>>>>>>> Somethink like (pseudocode):
>>>>>>>> public PageTest(PageParameters parameters){
>>>>>>>>    //cid = category id
>>>>>>>>    String category = parameters.get("cid").**toString();
>>>>>>>>    //find corresponding <a> tag
>>>>>>>>    Tag anchorTag = go_from_top_ul_tag_and_find_a_**
>>>>>>>> tag_by_category(category)
>>>>>>>>    //have corresponding anchor tag, get parrent tag of the anchor tag
>>>>>>>>    Tag anchorParentTag = anchorTag.getParent();
>>>>>>>>    //and now I can do my mysterious things with menu...
>>>>>>>> }
>>>>>>>>
>>>>>>>> But I don't know where to start my search and I totaly don't know
>>>>>>>> whot to look for in docu.
>>>>>>>>
>>>>>>>> Please, help :-)
>>>>>>>>
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>>>>>>>>
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