collatedemo.java

来自「《移动Agent技术》一书的所有章节源代码。」· Java 代码 · 共 1,001 行 · 第 1/3 页

        // TEXT

	textentry.addKeyListener(this);
        textentry.setFont(editFont);
        textentry.setText("black-birds\nPat\np\u00E9ch\u00E9\np\u00EAche\n" +
            "p\u00E9cher\np\u00EAcher\nTod\nT\u00F6ne\nTofu\nblackbirds\n" +
            "Ton\nPAT\nblackbird\nblack-bird\npat\n");

        //RULE ENTRY AREA
        Panel ruleEntryPanel = new Panel();

        Panel rulePanel = new Panel();

        if (theCollation instanceof RuleBasedCollator)
        {
            String ruleText = ((RuleBasedCollator)theCollation).getRules();
            ruleEntry.setFont(ruleFont);
            ruleEntry.setText(createUnicodeString(ruleText));
        }

        ruleEntryPanel.add(new Label("Collator Rules", Label.LEFT));
        ruleEntryPanel.add(ruleEntry);

        collateRulesButton = new Button("Set Rules");
	collateRulesButton.addActionListener(this);
        collationName = new TextField(10);
        collationName.setText("custom-" + untitledIndex);

        ruleEntryPanel.add(collateRulesButton);
        ruleEntryPanel.add(new Label("Collator Name", Label.LEFT));
        ruleEntryPanel.add(collationName);
        Utility.fixGrid(ruleEntryPanel,1);


        // PUT ALL TOGETHER

        Panel centerPanel = new Panel();
        centerPanel.add(textentry);
        centerPanel.add(topPanel);
        centerPanel.add(ruleEntryPanel);
        errorMsg.setFont(Utility.labelFont);
        centerPanel.add(errorMsg);
        Utility.fixGrid(centerPanel,3);

        add("Center", centerPanel);

        Panel bottomPanel = new Panel();
        bottomPanel.setLayout(new GridLayout(2,1,0,0));

        addWithFont (bottomPanel,
                     new Label(copyrightString, Label.LEFT),
                     Utility.creditFont);
        addWithFont (bottomPanel,
                     new Label(copyrightString2, Label.LEFT),
                     Utility.creditFont);
        Utility.fixGrid(bottomPanel,1);
        add("South", bottomPanel);
    }


    //------------------------------------------------------------
    // private
    //------------------------------------------------------------
    /**
     * This function is called by handleSortAscend and handleSortDescend
     * to seperate each line of the textArea into individual strings,
     * and add them to the vector to be sorted.
     */
    private void InitializeListVector()
    {
        textList.removeAllElements();

        String composite = textentry.getText();
        char compositeArray[] = composite.toCharArray();
        for (int i = 0; i < compositeArray.length; i++)
        {
           compositeArray[i] = (char) (compositeArray[i] & 0xFF);
        }
        composite = new String(compositeArray);

        String substr;

        int startOffset = 0;
        int endOffset = 0;
        for (; endOffset < composite.length(); endOffset++)
        {
            char ch = composite.charAt(endOffset);
            if (ch == '\n' || ch == '\r')
            {
                if (endOffset > startOffset)
                {
                    substr = composite.substring(startOffset, endOffset);
                    textList.addElement(substr);
                }
                startOffset = endOffset + 1;
            }
        }

        if (startOffset < composite.length())
        {
            substr = composite.substring(startOffset, composite.length());
            textList.addElement(substr);
        }

    }


    /**
     * This function is called by handleSortAscend and handleSortDescend
     * to reset the text area based on the sort results stored as a vector
     * of substrings.
     */
    private void resetTextArea()
    {
        String composite = new String();

        int i = 0;
        for (; i < textList.size() - 1; i++)
        {
            composite = composite.concat((String) textList.elementAt(i));
            composite = composite.concat("\n");
        }
        //don't add the \n to the end
           composite = composite.concat((String) textList.elementAt(i));

        textentry.setText(composite);
        textList.removeAllElements();
    }



    private void errorText(String s)
    {
        if (!s.equals(errorMsg.getText()))
        {
            errorMsg.setText(s);
            errorMsg.setSize(300, 50);
        }
    }

    private static StringBuffer oneChar = new StringBuffer(7);
    private String makeDisplayString(char ch) {
        oneChar.setLength(0);
        if (ch < 0x0020 ||
            (ch > 0x007D && ch < 0x00A0) ||
            ch > 0x00FF) {
            String temp = Integer.toString((int)ch,16).toUpperCase();
            oneChar.append(temp);
            if (temp.length() < 4)
                oneChar.append(zeros.substring(0,4-temp.length()));
        } else {
            oneChar.append(ch);
        }
        return oneChar.toString();
    }

     /**
    Changes a string into a representation that can be pasted into a program.
    Uses \ t, \ uxxxx, etc. to display characters outside of Latin1.
    Others are themselves.
    */
    private String createUnicodeString(String source)
    {
    StringBuffer result = new StringBuffer(source.length());
    int len = 0;
    int i = 0;
    while (i < source.length()) {
        char ch = source.charAt(i);
        switch(ch) {
       case '\'':
            int mytemp = i;
            int n = 0;
            result.append(ch);
            ch = source.charAt(++i);
            while((ch != '\'') && (i < source.length() -1))
            {
                String inquote = makeDisplayString(ch);
                n++; i++;
                if (inquote.length() > 1) {
                    result.append("\\u");
                    result.append(inquote);
                    len += 6;
                } else {
                    result.append(inquote);
                    len++;
                }
                ch = source.charAt(i);
            }
            if (n == 0) {
                result.append('\'');
                n++; i++;
                ch = source.charAt(i);
            }
            result.append(ch);
            len += n;
            break;
        case ';': case '=':
            if (len > 15)
            {
                result.append('\n');
                len = 0;
            }
            result.append(' ');
            result.append(ch);
            len += 2;
            break;
        case ',':
            result.append(' ');
            result.append(ch);
            len += 2;
            break;
        case '<': case '&':
            result.append('\n');
            result.append(ch);
            result.append(' ');
            len = 0;
            len += 2;
            break;

        case '\n':
            break;
        default:
            String dspString = makeDisplayString(ch);
            if (dspString.length() > 1) {
                result.append("\\u");
                result.append(dspString);
                len += 6;
            } else {
                result.append(dspString);
                len++;
            }
            break;
        }
        i++;
    }
    return result.toString();
    }

    private static final String zeros = "0000";


    private String convertStringToRules(String source)
    {
    StringBuffer result = new StringBuffer(source.length());
    for (int i = 0; i < source.length(); ++i) {
        //hack around TextArea bug
        char ch = (char) (source.charAt(i) & 0xFF);
        switch(ch) {
        case '\n':
            break;
        case '\'':
	    if ((i+6 < source.length()) && (source.charAt(i+2) == 'u')) {
		String temp = source.substring(i+3,i+7);
		if (temp.equals("005c")) {
		    //have to handle backslash differently since 
		    //it is a special character in Java
		    result.append("'\\u005c'");
		} else
		    result.append((char)(Integer.parseInt(temp,16)));
		i = i + 7;
	    }
	    else result.append(ch);
            break;
        case '\\':
          if ( (i+5 < source.length()) && (source.charAt(i+1) == 'u') )
          {
            String temp = source.substring(i+2,i+6);
            result.append((char)(Integer.parseInt(temp,16)));
            i = i + 6;
           }
           else result.append(ch);

            break;
        default:
            result.append(ch);
            break;
        }
    }
    return result.toString();
    }

    private static final String creditString
        = "v1.1a7, Demo";
    private static final String copyrightString
        = "";
    private static final String copyrightString2
        = "";

    // HSYS : fix
    private static int MAX_COLLATIONS = 12;
    private int untitledIndex = 1;
    private static final int FIELD_COLUMNS = 45;
    private static final Font editFont = new Font("TimesRoman",Font.PLAIN,18);
    private static final Font ruleFont = new Font("TimesRoman",Font.BOLD,14);

    private static final boolean DEBUG = false;

    private TextArea textentry = new TextArea(10, 10);
    private TextArea ruleEntry = new TextArea(10, 20);
    private Vector textList = new Vector(15, 10);

    private Choice localeChoice;

    private static final String no_decomposition = "None";
    private static final String canonical_decomposition = "Canonical";
    private static final String full_decomposition = "Full";
    private Choice decompChoice;

    private static final String tertiary = "Tertiary - a vs. A";
    private static final String secondary = "Secondary - a vs. \u00E0";
    private static final String primary = "Primary - a vs. b";
    private Choice strengthChoice;

    private Locale theLocale = null;
    private Collator theCollation = null;

    private Locale[] locales;
    private Collator[] collations;
    private String[] ruleStrings;
    private Label errorMsg = new Label("", Label.LEFT);

    CheckboxGroup checkboxes;
    Checkbox sortAscending;
    Checkbox sortDescending;
    Checkbox noSort;

    Button collateRulesButton;
    TextField collationName;

    private DemoApplet applet;

}