* This class creates a panel that displays all the relevant diacritic characters used in Asian Studies. * In the context of TibEdit, it's constructor takes a TibFrame which is its parent. When the mouse is clicked * on any diacritic character displayed in DiacriticPanel, it inserts that character at the cursor of the * TibFrame's {@link TextPane}. All characters are, of course, in Unicode. The file that is the list of diacrtics * is dia.dat in the /bin/ directory. It is a flat file list of the hexadecimal codes for the Unicode diacritics. * These are read and converted into characters by DiacriticPanel and they are displayed in the order they are read. * Thus, to reorder, modify, or add diacritics, one needs only to make the appropriate changes to the dia.dat file. *
* * @author Than Garson, Tibetan and Himalayan Digital Library */ public class DiacriticPanel extends JPanel implements TibConstants { // Attributes protected TibFrame frame; protected JTextComponent jtc; private TiblEdit controller; //private StringTokenizer dataSplitter; private char chosenChar; private boolean hasPicked; private boolean isGeneral; /** * Sets the panel's layout, size, and background, and reads in the diacritic data. */ private void init() { // Creating content panel to use for frame's content & initialize //JPanel charPanel = new JPanel(new BorderLayout()); setLayout(new GridLayout(0,3)); setSize(new Dimension(100,450)); setBackground(Color.white); // Split the data, create individual line labels try { BufferedReader br = new BufferedReader(new FileReader(new File(DEFAULT_DIRECTORY + DIA_DATA))); String line = br.readLine(); while(line != null) { char diaChar = (char)Long.parseLong(line.trim(),16); String diaStr = Character.toString(diaChar); JLabel diaLab = getDiaLabel(diaStr); this.add(diaLab); line = br.readLine(); } br.close(); } catch (IOException ioe) { System.out.println("An IOE caught: " + ioe.getMessage()); ioe.printStackTrace(); } } // Accessors /** * This method takes a character, which is actually a String variable and creates a label * with a border and a margin with the supplied character string as the * centered text. Adds a MouseListener that is a {@link DiacriticPanel.TiblEditMouseAdapter}. It is called by the {@link #init} method. * * @param ch - A string variable that is the character associated with this label/button. * * @return JLabel - the label created. */ public JLabel getDiaLabel(String ch) { JLabel lab = new JLabel(ch); lab.setFont(DEFAULT_FONT); lab.setHorizontalAlignment(SwingConstants.CENTER); lab.setBorder(new CompoundBorder(new LineBorder(Color.black),BorderFactory.createEmptyBorder(2,2,2,2))); if(isGeneral) { lab.addMouseListener(new GenMouseAdapter()); } else { lab.addMouseListener(new TiblEditMouseAdapter()); } return lab; } public void setChosenChar(char aChar) { chosenChar = aChar; hasPicked = true; } public char getChosenChar() { char rValue = chosenChar; chosenChar = ' '; hasPicked = false; return rValue; } public void setController(TiblEdit te) { controller = te; } public TiblEdit getController() { return controller; } public void setFrame(TibFrame tf) { frame = tf; } public JFrame getFrame() { return frame; } public void setJTC(JTextComponent jtextc) { jtc = jtextc; } public JTextComponent getJTC() { return jtc; } // Constructors public DiacriticPanel(boolean isGen, Container cont) { super(); isGeneral = isGen; if(cont instanceof TibFrame) { setFrame((TibFrame)cont); } else if(cont instanceof JTextComponent) { setJTC((JTextComponent)cont); } init(); hasPicked = false; } public DiacriticPanel(TibFrame tf) { this(false,tf); setFrame(tf); setController(tf.getController()); } public DiacriticPanel(JTextComponent jtc) { this(true,jtc); } // Inner Classes // The Mouse Adapter /** ** This inner class is a MouseAdapter that implements "mousePressed". It is added to a label with a diacritic * so that when that label is clicked, the corresponding Unicode diacritic character is inserted in the * open document, a {@link TextPane}, at the cursor. *
*/ private class TiblEditMouseAdapter extends MouseAdapter { /** ** This version of mousePressed. Takes the {@link TibFrame} supplied with the DiacriticPanel's constructor * and gets its {@link TextPane}. It then inserts the Unicode diacritic character from the source * label at the cursor of this text pane. *
*/ public void mousePressed(MouseEvent me) { TextPane tp = frame.getTextPane(); if(tp.isEditable()) { JLabel source = (JLabel)me.getSource(); String dia = source.getText(); int pos = tp.getCaret().getDot(); try { tp.getDocument().insertString(pos,dia,tp.getCharacterAttributes()); } catch (BadLocationException ble) { System.out.println("Bad location exception while inserting diacritic (" +pos+")! \n"); } } } } private class GenMouseAdapter extends MouseAdapter { /** ** This version of mousePressed. Takes the {@link TibFrame} supplied with the DiacriticPanel's constructor * and gets its {@link TextPane}. It then inserts the Unicode diacritic character from the source * label at the cursor of this text pane. *
*/ public void mousePressed(MouseEvent me) { JLabel source = (JLabel)me.getSource(); String dia = source.getText(); jtc.replaceSelection(dia); } } // Main Method for testing public static void main(String[] args) {/* TibFrame tf = new TibFrame("Diacritic Test"); DiacriticPanel dp = new DiacriticPanel(); JScrollPane jsp = new JScrollPane(dp, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS); tf.setContentPane(jsp); tf.pack(); tf.show();*/ } }