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.LineRenderer;
023import org.crsh.text.Style;
024import org.crsh.util.CharSlicer;
025import org.crsh.util.Pair;
026
027public class LabelElement extends Element {
028
029  /** . */
030  final String value;
031
032  /** . */
033  final int minWidth;
034
035  /** . */
036  final int actualWidth;
037
038  /** . */
039  final int actualHeight;
040
041  /** . */
042  final CharSlicer slicer;
043
044  /**
045   * Create a new label element
046   *
047   * @param value the label value
048   * @param minWidth the label minimum width
049   * @throws IllegalArgumentException if the minimum width is negative
050   */
051  public LabelElement(Object value, int minWidth) throws IllegalArgumentException {
052    if (minWidth < 0) {
053      throw new IllegalArgumentException("No negative min size allowed");
054    }
055
056    //
057    String s = String.valueOf(value);
058
059    // Determine size
060    CharSlicer slicer = new CharSlicer(s);
061    Pair<Integer, Integer> size = slicer.size();
062
063    //
064    this.value = s;
065    this.minWidth = Math.min(size.getFirst(), minWidth);
066    this.actualWidth = size.getFirst();
067    this.actualHeight = size.getSecond();
068    this.slicer = slicer;
069  }
070
071  public LabelElement(String value) {
072    this((Object)value);
073  }
074
075  public LabelElement(String value, int minWidth) {
076    this((Object)value, minWidth);
077  }
078
079  public LabelElement(Object value) {
080    this(value, 1);
081  }
082
083  public String getValue() {
084    return value;
085  }
086
087  public LineRenderer renderer() {
088    return new LabelLineRenderer(this);
089  }
090
091  @Override
092  public String toString() {
093    return "Label[" + value + "]";
094  }
095
096  @Override
097  public LabelElement style(Style.Composite style) {
098    return (LabelElement)super.style(style);
099  }
100}