/*
* RHQ Management Platform
* Copyright (C) 2009-2010 Red Hat, Inc.
* All rights reserved.
*
* This program 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 version 2 of the License.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.core.gui.table.renderer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.gui.table.component.AllRowsSelectorComponent;
import org.rhq.core.gui.table.component.RowSelectorComponent;
import org.rhq.core.gui.util.FacesComponentUtility;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.util.List;
/**
* An HTML renderer for {@link org.rhq.core.gui.table.component.AllRowsSelectorComponent}s (i.e. rhq:allRowsSelector).
*
* @author Ian Springer
*/
public class AllRowsSelectorRenderer extends AbstractRenderer {
private final Log log = LogFactory.getLog(this.getClass());
@Override
public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
validateParameters(context, component);
AllRowsSelectorComponent allRowsSelector = (AllRowsSelectorComponent) component;
UIData data = getTargetUIData(allRowsSelector);
RowSelectorComponent rowSelector = getRowSelector(data);
if (rowSelector.getMode() != RowSelectorComponent.Mode.multi) {
log.error("An allRowsSelector component was specified for dataTable component " + data
+ ", which has a rowSelector with mode 'single', "
+ "but allRowsSelector components can only be used with rowSelectors with mode 'multi'. "
+ "The allRowSelector will not be rendered.");
allRowsSelector.setRendered(false);
return;
}
// TODO: Do not render if the data model's row count is 0.
ResponseWriter writer = context.getResponseWriter();
writer.startElement("input", component);
writeIdAttributeIfNecessary(context, writer, component);
String type = "checkbox";
writer.writeAttribute("type", type, "type");
String clientId = component.getClientId(context);
writer.writeAttribute("name", clientId, "clientId");
// TODO: Write 'checked' attribute to allow checkbox to be selected by default? Probably overkill.
String onclick = "selectAll(this, '" + rowSelector.getClientId(context) + "')";
String userSpecifiedOnclick = (String) rowSelector.getAttributes().get("onclick");
if (userSpecifiedOnclick != null) {
onclick += "; " + userSpecifiedOnclick;
}
writer.writeAttribute("onclick", onclick, "onclick");
// TODO: Add support for all the other common HTML attributes.
//RenderKitUtils.renderPassThruAttributes(writer, component, ATTRIBUTES);
Boolean disabled = (Boolean) rowSelector.getAttributes().get("disabled");
if (disabled != null && disabled) {
writer.writeAttribute("disabled", "disabled", "disabled");
}
//RenderKitUtils.renderXHTMLStyleBooleanAttributes(writer, component);
writer.endElement("input");
}
private RowSelectorComponent getRowSelector(UIData data) {
List<RowSelectorComponent> rowSelectors = FacesComponentUtility.getDescendantsOfType(data,
RowSelectorComponent.class);
if (rowSelectors.isEmpty()) {
throw new IllegalStateException("No rowSelector component was found within the target dataTable component " + data + ".");
}
if (rowSelectors.size() > 1) {
throw new IllegalStateException("More than one rowSelector component was found within the target dataTable component " + data + ".");
}
RowSelectorComponent rowSelector = rowSelectors.get(0);
return rowSelector;
}
private UIData getTargetUIData(AllRowsSelectorComponent allRowsSelector) {
UIData data;
String dataTableId = allRowsSelector.getDataTableId();
if (dataTableId != null) {
data = (UIData) allRowsSelector.findComponent(dataTableId);
if (data == null) {
throw new IllegalStateException("UIData component (i.e. h:dataTable or rich:*dataTable) with id '" + dataTableId + "' not found within naming scope of component "
+ allRowsSelector + ". The allRowsSelector component must either be within a UIData component or must specify the id of a UIData component within its naming scope via the 'dataTableId' attribute.");
}
} else {
data = FacesComponentUtility.getAncestorOfType(allRowsSelector, UIData.class);
if (data == null) {
throw new IllegalStateException("Enclosing UIData component (i.e. h:dataTable or rich:*dataTable) not found for component "
+ allRowsSelector + ". The allRowsSelector component must either be within a UIData component or must specify the id of a UIData component within its naming scope via the 'dataTableId' attribute.");
}
}
return data;
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
validateParameters(context, component);
ResponseWriter writer = context.getResponseWriter();
writer.endElement("input");
}
}