/**
* This file is part of Horaz.
*
* Horaz is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Horaz is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Horaz. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright Joe's App Factory UG (haftungsbeschränkt)
*/
package com.horaz.client.widgets.events;
import com.google.gwt.dom.client.AnchorElement;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.LIElement;
import com.google.gwt.user.client.Event;
import com.horaz.client.model.BaseModel;
import com.horaz.client.widgets.BaseWidget;
import com.horaz.client.widgets.ListView;
/**
* when a item was clicked in the listview, this event will be fired.
* It refers to the corresponding model.
*
* @param <T> model class
*/
public abstract class ItemClickListener<T extends BaseModel> implements F {
@Override
public void f(Event event) {
// extract selected list item
if (Element.is(event.getEventTarget())) {
Element elm = Element.as(event.getEventTarget());
Element ul = null;
Element li = null;
Element a = null;
// find <ul>, <li> and <a>
while (elm.hasParentElement()) {
if (elm.getTagName().equals("A")) {
a = elm;
} else if (elm.getTagName().equals("LI")) {
li = elm;
} else if (elm.getTagName().equals("UL")) {
ul = elm;
break;
}
elm = elm.getParentElement();
}
if (ul != null && li != null) {
@SuppressWarnings("unchecked")
ListView<T> lv = (ListView<T>) BaseWidget.allWidgetInstances.get(ul);
AnchorElement aElm = AnchorElement.as(a);
if (lv.getDataStore() == null) {
onItemClick(event, null, aElm);
} else {
onItemClick(event, lv.getModel((LIElement) li), aElm);
}
}
}
}
/**
* is called when the event occurs.
*
* @param event
* @param model
* @param aElm
*/
public abstract void onItemClick(Event event, T model, AnchorElement aElm);
}