/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.client.connectors.tree;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.Element;
import com.vaadin.client.connectors.AbstractRendererConnector;
import com.vaadin.client.connectors.grid.ColumnConnector;
import com.vaadin.client.renderers.HtmlRenderer;
import com.vaadin.client.renderers.Renderer;
import com.vaadin.client.widget.grid.RendererCellReference;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.tree.TreeRendererState;
import com.vaadin.ui.Tree.TreeRenderer;
import elemental.json.JsonObject;
/**
* Connector for TreeRenderer
*
* @author Vaadin Ltd
* @since 8.1
*/
@Connect(TreeRenderer.class)
public class TreeRendererConnector extends AbstractRendererConnector<String> {
@Override
public Renderer<String> createRenderer() {
return new HtmlRenderer() {
@Override
public void render(RendererCellReference cell, String htmlString) {
String content = SafeHtmlUtils.htmlEscape(htmlString);
JsonObject row = getParent().getParent().getDataSource()
.getRow(cell.getRowIndex());
if (row != null && row.hasKey("itemIcon")) {
String resourceId = row.getString("itemIcon");
Element element = getConnection()
.getIcon(getResourceUrl(resourceId)).getElement();
content = element.getString() + " " + content;
}
super.render(cell, content);
}
};
}
@Override
public ColumnConnector getParent() {
return (ColumnConnector) super.getParent();
}
@Override
public TreeRendererState getState() {
return (TreeRendererState) super.getState();
}
}