TagColumnItem.java

/**
 *  Copyright 2012 Universitat Pompeu Fabra.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *
 */
package org.onexus.website.api.widgets.tags;

import org.apache.wicket.AttributeModifier;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.event.Broadcast;
import org.apache.wicket.extensions.markup.html.repeater.data.table.DataTable;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.onexus.website.api.events.EventViewChange;
import org.onexus.website.api.pages.browser.BrowserPage;
import org.onexus.website.api.pages.browser.BrowserPageStatus;
import org.onexus.website.api.widgets.tags.tagstore.ITagStoreManager;
import org.onexus.website.api.widgets.tags.tagstore.TagStore;

import javax.inject.Inject;
import java.util.List;

public class TagColumnItem extends Panel {

    @Inject
    private ITagStoreManager tagStoreManager;

    private WebMarkupContainer checkbox;

    public TagColumnItem(String id, final IModel<String> rowModel) {
        super(id);

        checkbox = new WebMarkupContainer("checkbox");

        checkbox.add(new AttributeModifier("value", rowModel));

        add(new ListView<String>("tags", new TagValuesModel(rowModel)) {

            @Override
            protected void populateItem(ListItem<String> item) {
                item.add(new Label("label", item.getModel()));
                item.add(new AjaxLink<String>("link", item.getModel()) {

                    @Override
                    public void onClick(AjaxRequestTarget target) {
                        getTagStore().removeTagValue(getModelObject(), rowModel.getObject());

                        send(getPage(), Broadcast.BREADTH, EventViewChange.EVENT);

                    }

                });
            }

        });

        add(checkbox);

    }

    private TagStore getTagStore() {
        BrowserPageStatus status = findParent(BrowserPage.class).getStatus();
        String tagId = status.getCurrentTabId();
        String baseURI = status.getBase();
        String namespace = baseURI + "#" + tagId;

        return tagStoreManager.getUserStore(namespace);
    }

    protected WebMarkupContainer getCheckBox() {
        return checkbox;
    }

    protected String getTableId() {
        return findParent(DataTable.class).getMarkupId();
    }

    @Override
    protected void onBeforeRender() {

        checkbox.add(new AttributeModifier("onclick", "updateSelected('" + getTableId() + "');"));

        super.onBeforeRender();
    }

    private class TagValuesModel extends AbstractReadOnlyModel<List<String>> {

        private IModel<String> rowValue;

        public TagValuesModel(IModel<String> rowValue) {
            super();
            this.rowValue = rowValue;
        }

        @Override
        public List<String> getObject() {
            return getTagStore().getTagKeysByValue(rowValue.getObject());
        }

    }
}