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
020package org.crsh.text.ui;
021
022import org.crsh.text.LineReader;
023import org.crsh.text.LineRenderer;
024import org.crsh.util.Pair;
025
026class LabelLineRenderer extends LineRenderer {
027
028  /** . */
029  private final LabelElement element;
030
031  LabelLineRenderer(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}