001 /* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 020 package org.crsh.text.ui; 021 022 import org.crsh.text.LineReader; 023 import org.crsh.text.RenderAppendable; 024 import org.crsh.text.Renderer; 025 import org.crsh.text.Style; 026 027 public abstract class Element { 028 029 /** . */ 030 private Style.Composite style; 031 032 protected Element() { 033 this.style = null; 034 } 035 036 public abstract Renderer renderer(); 037 038 public void render(RenderAppendable to) { 039 Renderer renderer = renderer(); 040 041 // For now height - 1 because of the char that goes to the line in some impl 042 LineReader reader = renderer.reader(to.getWidth(), to.getHeight() - 1); 043 if (reader != null) { 044 while (reader.hasLine()) { 045 reader.renderLine(to); 046 to.append('\n'); 047 } 048 } 049 } 050 051 public final Style.Composite getStyle() { 052 return style; 053 } 054 055 public final void setStyle(Style.Composite style) { 056 this.style = style; 057 } 058 059 public Element style(Style.Composite style) { 060 setStyle(style); 061 return this; 062 } 063 064 public static RowElement row() { 065 return new RowElement(); 066 } 067 068 public static RowElement header() { 069 return new RowElement(true); 070 } 071 072 public static LabelElement label(String value) { 073 return new LabelElement(value); 074 } 075 }