/* 
    P/P   *  Method: com.dmdirc.addons.ui_swing.components.text.TextLabel__static_init
          */
     1  /*
     2   * Copyright (c) 2006-2009 Chris Smith, Shane Mc Cormack, Gregory Holmes
     3   *
     4   * Permission is hereby granted, free of charge, to any person obtaining a copy
     5   * of this software and associated documentation files (the "Software"), to deal
     6   * in the Software without restriction, including without limitation the rights
     7   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   * copies of the Software, and to permit persons to whom the Software is
     9   * furnished to do so, subject to the following conditions:
    10   *
    11   * The above copyright notice and this permission notice shall be included in
    12   * all copies or substantial portions of the Software.
    13   *
    14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   * SOFTWARE.
    21   */
    22  
    23  package com.dmdirc.addons.ui_swing.components.text;
    24  
    25  import java.awt.Font;
    26  import java.awt.Insets;
    27  
    28  import javax.swing.JTextPane;
    29  import javax.swing.UIManager;
    30  import javax.swing.plaf.basic.BasicTextPaneUI;
    31  import javax.swing.text.DefaultStyledDocument;
    32  import javax.swing.text.SimpleAttributeSet;
    33  import javax.swing.text.StyleConstants;
    34  import javax.swing.text.StyledDocument;
    35  import javax.swing.text.html.HTMLDocument;
    36  import javax.swing.text.html.HTMLEditorKit;
    37  
    38  /**
    39   * Dyamnic text label.
    40   */
         /* 
    P/P   *  Method: Document getDocument()
          * 
          *  Postconditions:
          *    init'ed(return_value)
          */
    41  public class TextLabel extends JTextPane {
    42  
    43      /**
    44       * A version number for this class. It should be changed whenever the
    45       * class structure is changed (or anything else that would prevent
    46       * serialized objects being unserialized with the new class).
    47       */
    48      private static final long serialVersionUID = 1;
    49      /** Simple attribute set. */
    50      private SimpleAttributeSet sas;
    51  
    52      /**
    53       * Creates a new instance of TextLabel.
    54       */
    55      public TextLabel() {
                 /* 
    P/P           *  Method: void com.dmdirc.addons.ui_swing.components.text.TextLabel()
                  * 
                  *  Postconditions:
                  *    this.sas == &new SimpleAttributeSet(TextLabel#6)
                  *    new SimpleAttributeSet(TextLabel#6) num objects == 1
                  */
    56          this(null, true);
    57      }
    58  
    59      /**
    60       * Creates a new instance of TextLabel.
    61       *
    62       * @param text Text to display
    63       */
    64      public TextLabel(final String text) {
                 /* 
    P/P           *  Method: void com.dmdirc.addons.ui_swing.components.text.TextLabel(String)
                  * 
                  *  Postconditions:
                  *    this.sas == &new SimpleAttributeSet(TextLabel#6)
                  *    new SimpleAttributeSet(TextLabel#6) num objects == 1
                  */
    65          this(text, true);
    66      }
    67  
    68      /**
    69       * Creates a new instance of TextLabel.
    70       *
    71       * @param text Text to display
    72       * @param justified Justify the text?
    73       */
    74      public TextLabel(final String text, final boolean justified) {
                 /* 
    P/P           *  Method: void com.dmdirc.addons.ui_swing.components.text.TextLabel(String, bool)
                  * 
                  *  Presumptions:
                  *    javax.swing.JTextPane:getDocument(...)@101 != null
                  *    javax.swing.UIManager:getFont(...)@79 != null
                  *    javax.swing.text.html.HTMLDocument:getStyleSheet(...)@80 != null
                  *    javax.swing.text.html.HTMLDocument:getStyleSheet(...)@83 != null
                  * 
                  *  Postconditions:
                  *    this.sas == &new SimpleAttributeSet(TextLabel#6)
                  *    new SimpleAttributeSet(TextLabel#6) num objects == 1
                  * 
                  *  Test Vectors:
                  *    justified: {0}, {1}
                  */
    75          super(new DefaultStyledDocument());
    76          setEditorKit(new HTMLEditorKit());
    77          setUI(new BasicTextPaneUI());
    78  
    79          final Font font = UIManager.getFont("Label.font");
    80          ((HTMLDocument) getDocument()).getStyleSheet().addRule("body " +
    81                  "{ font-family: " + font.getFamily() + "; " + "font-size: " +
    82                  font.getSize() + "pt; }");
    83          ((HTMLDocument) getDocument()).getStyleSheet().addRule("p { margin: 0; }");
    84  
    85          setOpaque(false);
    86          setEditable(false);
    87          setHighlighter(null);
    88          setMargin(new Insets(0, 0, 0, 0));
    89  
    90          sas = new SimpleAttributeSet();
    91          if (justified) {
    92              StyleConstants.setAlignment(sas, StyleConstants.ALIGN_JUSTIFIED);
    93          }
    94  
    95          setText(text);
    96      }
    97  
    98      /** {@inheritDoc} */
    99      @Override
   100      public StyledDocument getDocument() {
                 /* 
    P/P           *  Method: StyledDocument getDocument()
                  * 
                  *  Postconditions:
                  *    init'ed(return_value)
                  */
   101          return (StyledDocument) super.getDocument();
   102      }
   103  
   104      /** {@inheritDoc} */
   105      @Override
   106      public void setText(final String t) {
                 /* 
    P/P           *  Method: void setText(String)
                  * 
                  *  Preconditions:
                  *    (soft) init'ed(this.sas)
                  * 
                  *  Presumptions:
                  *    javax.swing.JTextPane:getDocument(...)@101 != null
                  * 
                  *  Test Vectors:
                  *    t: Addr_Set{null}, Inverse{null}
                  *    java.lang.String:isEmpty(...)@108: {1}, {0}
                  */
   107          super.setText(t);
   108          if (t != null && !t.isEmpty()) {
   109              getDocument().setParagraphAttributes(0, t.length(), sas, false);
   110          }
   111      }
   112  }