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 }