/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.web.function;
import java.util.Collection;
import org.apache.commons.lang3.StringUtils;
import org.structr.common.error.FrameworkException;
import org.structr.schema.action.ActionContext;
import org.structr.schema.action.Function;
import org.structr.web.common.RenderContext;
import org.structr.web.entity.dom.DOMNode;
/**
*
*/
public class RenderFunction extends Function<Object, Object> {
public static final String ERROR_MESSAGE_RENDER = "Usage: ${render(node)} or ${render(nodes)}. Example: ${render(get(this, \"children\"))}";
public static final String ERROR_MESSAGE_RENDER_JS = "Usage: ${{Structr.render(node)}} or ${{Structr.render(nodes)}}. Example: ${{Structr.render(Structr.get('this').children)}}";
@Override
public String getName() {
return "render()";
}
@Override
public Object apply(final ActionContext ctx, final Object caller, final Object[] sources) throws FrameworkException {
if (sources != null && sources.length == 1) {
RenderContext innerCtx = new RenderContext((RenderContext)ctx);
if (sources[0] == null) {
return "";
}
if (sources[0] instanceof DOMNode) {
((DOMNode)sources[0]).render(innerCtx, 0);
} else if (sources[0] instanceof Collection) {
for (final Object obj : (Collection)sources[0]) {
if (obj instanceof DOMNode) {
((DOMNode)obj).render(innerCtx, 0);
}
}
} else {
logger.warn("Error: Parameter 1 is neither node nor collection. Parameters: {}", getParametersAsString(sources));
}
return StringUtils.join(innerCtx.getBuffer().getQueue(), "");
} else {
logParameterError(caller, sources, ctx.isJavaScriptContext());
}
return usage(ctx.isJavaScriptContext());
}
@Override
public String usage(boolean inJavaScriptContext) {
return (inJavaScriptContext ? ERROR_MESSAGE_RENDER_JS : ERROR_MESSAGE_RENDER);
}
@Override
public String shortDescription() {
return "Renders the children of the current node";
}
}