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.Renderer;
024 import org.crsh.util.Pair;
025
026 class LabelRenderer extends Renderer {
027
028 /** . */
029 private final LabelElement element;
030
031 LabelRenderer(LabelElement element) {
032 this.element = element;
033 }
034
035 @Override
036 public int getMinWidth() {
037 return element.minWidth;
038 }
039
040 @Override
041 public int getActualWidth() {
042 return element.actualWidth;
043 }
044
045 @Override
046 public int getActualHeight(int width) {
047 return element.slicer.lines(width).length;
048 }
049
050 @Override
051 public int getMinHeight(int width) {
052 // For now we don't support cropping
053 return getActualHeight(width);
054 }
055
056 @Override
057 public LineReader reader(int width) {
058 return reader(width, -1);
059 }
060
061 @Override
062 public LineReader reader(final int width, int height) {
063 if (width == 0) {
064 return null;
065 } else {
066 Pair<Integer, Integer>[] lines = element.slicer.lines(width);
067 if (height == -1) {
068 height = lines.length;
069 }
070 if (lines.length > height) {
071 return null;
072 } else {
073 return new LabelReader(element, lines, width, height);
074 }
075 }
076 }
077 }