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.LineRenderer;
024    import org.crsh.util.Pair;
025    
026    class 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    }