/** Adds the header to the TreeTable. */
protected void addHeader() {
// create the view for side columns
SideColumnsView sideColumns = new SideColumnsView("sideColumns", null);
add(sideColumns);
if (columns != null) {
for (int i = 0; i < columns.length; i++) {
IColumn column = columns[i];
if ((column.getLocation().getAlignment() == Alignment.LEFT)
|| (column.getLocation().getAlignment() == Alignment.RIGHT)) {
TreeTableItem component = new TreeTableItem(i);
Component cell = column.newHeader(sideColumns, TreeTableItem.ID);
component.add(cell);
sideColumns.addColumn(column, component, null);
}
}
}
// create the view for middle columns
MiddleColumnsView middleColumns = new MiddleColumnsView("middleColumns", null, hasLeftColumn());
add(middleColumns);
if (columns != null) {
for (int i = 0; i < columns.length; i++) {
IColumn column = columns[i];
if (column.getLocation().getAlignment() == Alignment.MIDDLE) {
TreeTableItem component = new TreeTableItem(i);
Component cell = column.newHeader(middleColumns, TreeTableItem.ID);
component.add(cell);
middleColumns.addColumn(column, component, null);
}
}
}
}
private boolean hasLeftColumn() {
for (IColumn column : columns) {
if (column.getLocation().getAlignment().equals(Alignment.LEFT)) {
return true;
}
}
return false;
}
/**
* Populates one row of the tree.
*
* @param item the tree node component
* @param level the current level
*/
@Override
protected void populateTreeItem(final WebMarkupContainer item, final int level) {
final TreeNode node = (TreeNode) item.getDefaultModelObject();
// add side columns
SideColumnsView sideColumns = new SideColumnsView("sideColumns", node);
item.add(sideColumns);
if (columns != null) {
for (int i = 0; i < columns.length; i++) {
IColumn column = columns[i];
if ((column.getLocation().getAlignment() == Alignment.LEFT)
|| (column.getLocation().getAlignment() == Alignment.RIGHT)) {
TreeTableItem component;
// first try to create a renderable
IRenderable renderable = column.newCell(node, level);
if (renderable == null) {
// if renderable failed, try to create a regular component.
component = new TreeTableItem(i);
Component cell = column.newCell(sideColumns, TreeTableItem.ID, node, level);
component.add(cell);
} else {
component = null;
}
sideColumns.addColumn(column, component, renderable);
}
}
}
// add middle columns
MiddleColumnsView middleColumns = new MiddleColumnsView("middleColumns", node, hasLeftColumn());
if (columns != null) {
for (int i = 0; i < columns.length; i++) {
IColumn column = columns[i];
if (column.getLocation().getAlignment() == Alignment.MIDDLE) {
TreeTableItem component;
// first try to create a renderable
IRenderable renderable = column.newCell(node, level);
if (renderable == null) {
// if renderable failed, try to create a regular component
component = new TreeTableItem(i);
Component cell = column.newCell(middleColumns, TreeTableItem.ID, node, level);
component.add(cell);
} else {
component = null;
}
middleColumns.addColumn(column, component, renderable);
}
}
}
item.add(middleColumns);
// do distinguish between selected and unselected rows we add an
// behavior that modifies row css class.
item.add(
new Behavior() {
private static final long serialVersionUID = 1L;
@Override
public void onComponentTag(final Component component, final ComponentTag tag) {
super.onComponentTag(component, tag);
if (getTreeState().isNodeSelected(node)) {
tag.put("class", "row-selected");
} else {
tag.put("class", "row");
}
}
});
}