bundles/org.eclipse.orion.client.ui/web/orion/explorers/explorerNavHandler.js
function(e) {
			if (!e.target.classList.contains("treeTableRow")) return;
			if(this.setSelection(this.currentModel(), true, true)) {
				e.preventDefault();
			}
		}
function(e) {
			if (!e.target.classList.contains("treeTableRow")) return;
			if(this.setSelection(this.currentModel(), true, true)) {
				e.preventDefault();
			}
		}
function ( e ) { if ( ! e . target . classList . contains ( "treeTableRow" ) ) return ; if ( this . setSelection ( this . currentModel ( ) , true , true ) ) { e . preventDefault ( ) ; } }
Space key toggles the check box on the current row if the renderer uses check box
Space key toggles the check box on the current row if the renderer uses check box