/*
* OpenFaces - JSF Component Library 2.0
* Copyright (C) 2007-2012, TeamDev Ltd.
* licensing@openfaces.org
* Unless agreed in writing the contents of this file are subject to
* the GNU Lesser General Public License Version 2.1 (the "LGPL" License).
* This library 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.
* Please visit http://openfaces.org/licensing/ for more details.
*/
package org.openfaces.renderkit.table;
import org.openfaces.component.table.AbstractTable;
import org.openfaces.component.table.ColumnGroup;
import org.openfaces.component.table.DataTable;
import org.openfaces.component.table.ExpansionToggle;
import org.openfaces.component.table.TreeColumn;
import org.openfaces.component.table.TreeTable;
import org.openfaces.util.Components;
import org.openfaces.util.Environment;
import org.openfaces.util.Rendering;
import org.openfaces.util.Resources;
import org.openfaces.util.Styles;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
/**
* @author Dmitry Pikhulya
*/
public class TreeColumnRenderer extends ColumnRenderer {
private static final String DEFAULT_INDENT_CLASS = "o_treetable_indent";
private static final String DEFAULT_EXPANSION_TOGGLE_CELL_CLASS = "o_treetable_expansion_toggle_cell";
@Override
public boolean getRendersChildren() {
return true;
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
TreeColumn treeColumn = ((TreeColumn) component);
ResponseWriter writer = context.getResponseWriter();
AbstractTable table = getTable(treeColumn);
if (!treeColumn.getShowAsTree()) {
super.encodeChildren(context, component);
return;
}
int level = table.getNodeLevel();
String indentStyle = null;
String levelIndent = treeColumn.getLevelIndent();
if (!Rendering.isNullOrEmpty(levelIndent)) {
indentStyle = "width: " + levelIndent;
}
String indentClass = Styles.getCSSClass(context, table, indentStyle, DEFAULT_INDENT_CLASS);
writer.startElement("table", treeColumn);
writer.writeAttribute("cellspacing", "0", null);
writer.writeAttribute("cellpadding", "0", null);
writer.writeAttribute("class", "o_cellWrapper", null);
writer.startElement("tr", treeColumn);
writer.startElement("td", treeColumn);
for (int i = 0; i < level; i++) {
writer.writeAttribute("class", indentClass, null);
if (Environment.isOpera() && indentStyle != null)
writer.writeAttribute("style", indentStyle, null);
writer.startElement("div", treeColumn);
writer.writeAttribute("class", indentClass, null);
if ((Environment.isOpera() || Environment.isMozilla()) && indentStyle != null)
writer.writeAttribute("style", indentStyle, null);
writer.endElement("div");
writer.endElement("td");
writer.startElement("td", treeColumn);
}
boolean showTreeStructure = false;
String treeStructureStyle = showTreeStructure
? "background: url('" + Resources.internalURL(context, "table/treeStructureSolid.png") +
"') no-repeat left center;"
: null;
if (Environment.isOpera() && indentStyle != null)
writer.writeAttribute("style", indentStyle + (treeStructureStyle != null ? treeStructureStyle : ""), null);
else if (treeStructureStyle != null) {
writer.writeAttribute("style", treeStructureStyle, null);
}
boolean nodeHasChildren = table.getNodeHasChildren();
if (nodeHasChildren) {
String expansionToggleCellClass = Styles.getCSSClass(
context, table, treeColumn.getExpansionToggleCellStyle(),
DEFAULT_EXPANSION_TOGGLE_CELL_CLASS, treeColumn.getExpansionToggleCellClass());
expansionToggleCellClass = Styles.mergeClassNames(expansionToggleCellClass, indentClass);
writer.writeAttribute("class", Styles.mergeClassNames(expansionToggleCellClass, indentClass), null);
} else
writer.writeAttribute("class", indentClass, null);
writer.startElement("div", treeColumn);
if ((Environment.isOpera() || Environment.isMozilla()) && indentStyle != null)
writer.writeAttribute("style", indentStyle, null);
if (nodeHasChildren) {
Components.generateIdIfNotSpecified(treeColumn);
ExpansionToggle expansionToggle = treeColumn.getExpansionToggle();
expansionToggle.encodeAll(context);
} else
writer.writeAttribute("class", indentClass, null);
writer.endElement("div");
writer.endElement("td");
writer.startElement("td", treeColumn);
super.encodeChildren(context, component);
writer.endElement("td");
writer.endElement("tr");
writer.endElement("table");
}
private AbstractTable getTable(TreeColumn column) {
DataTable groupedDataTable = DataTable.getGroupedDataTable(column);
if (groupedDataTable != null) {
// implicitly generated TreeColumn for a grouped DataTable
return groupedDataTable;
}
UIComponent parent = column.getParent();
while (parent instanceof ColumnGroup)
parent = parent.getParent();
if (!(parent instanceof TreeTable))
throw new IllegalStateException("<o:treeColumn> must be embedded into <o:treeTable> component, but it was placed into a component with class: " + parent.getClass().getName());
return (AbstractTable) parent;
}
static void renderImgTag(FacesContext context, String url, String className) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("img", null);
writer.writeAttribute("src", url, null);
if (className != null)
writer.writeAttribute("class", className, null);
writer.endElement("img");
}
}