abstracttoolkit.java

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     * "man curs_print").
     */
//    public abstract void print(String str_) throws TerminfoCapabilityException;

    /** Provides an interface to the terminfo "init_pair()" function.
     */
    public abstract void initColorPair(int pair_, int fgnd_, int bgnd_)
            throws TerminfoCapabilityException;

    /** Emulates the terminfo COLOR_PAIR macro.
     */
    public static int COLOR_PAIR_ATTRIBUTE(int pair_) {
        return (pair_ << 8);
    }

    /** Returns the tty device name (provides an interface to the
     * Unix C function "ttyname()").
     */
    public abstract String getTtyName();

    //====================================================================
    // PACKAGE-PRIVATE METHODS

    /**
     * Add a window to the list of displayed windows.
     * Intended to be called by the Window class only.
     */
    void addWindow(Window window_) {
        synchronized (_windowList) {
            _windowList.add(window_);
        }
    }

    /**
     * Remove a window from the list of displayed windows.
     * This is intended to be called by the Window object when it hides itself.
     */
    void removeWindow(Window window_) {
        synchronized (_windowList) {
            if (_windowList.remove(window_) == false)
                throw new RuntimeException(
                        "trying to remove window not in windowlist");
        }
    }

    /**
     * Returns a Vector of all the currently-displayed Windows. Note that the
     * calling thread must synchronize on the returned Vector before using or
     * modifying it, because the window list is accessed by the
     * keyboard-reading thread as well as by the event-dispatching thread.
     */
    Vector getWindowList() {
        return _windowList;
    }

    private static int[] COLOR_TABLE = {
        0, //black 0
        4, //red 0
        2, //green 0
        14, //yellow 0
        1, //blue 0
        5, //magenta 0
        3, //cyan 0
        7, //white 0
    };

    /** This method is used for initializing the color constants in the
     * Color class.
     */
    protected static int getColor(int index) {
        return COLOR_TABLE[index];
    }

    /** Changes the default foreground color.
     */
    public static void setDefaultForeground(Color color_) {
        _defaultForeground = color_;
    }

    /** Returns the default foreground color.
     */
    public static Color getDefaultForeground() {
        return _defaultForeground;
    }

    /** Changes the default background color.
     */
    public static void setDefaultBackground(Color color_) {
        _defaultBackground = color_;
    }

    /** Returns the default background color.
     */
    public static Color getDefaultBackground() {
        return _defaultBackground;
    }

    /** Trigger garbage collection. This method can be called inside an
     * event handler, but the call to <code>System.gc()</code> will be
     * made after the event handler has completed (i.e. after drawing is
     * completed). This is a convenient, but OPTIONAL, way of ensuring
     * that the heap does not grow too large. Some experts say that it is
     * better not to call System.gc() explicitly from inside an application;
     * you take your pick.
     *
     * @param source_ the component that triggered the garbage collection
     * (not important).
     */
    public void triggerGarbageCollection(Component source_) {
//LS	_evtQueue.postEvent( new GarbageCollectionEvent(source_));
    }

    /** Get information about a mouse event (i.e the coordinates, and which
     * button was clicked).
     */
    public abstract MouseEventInfo getMouseEventInfo();


    //====================================================================
    // PRIVATE METHODS

    /**
     * This method is intended to be called by the keyboard-reading thread
     * only.
     */
    protected abstract int readKey();


    /** Get current X position of cursor.
     */
    protected abstract int getx();

    /** Get current Y position of cursor.
     */
    protected abstract int gety();

    private static int[] ATTRIBUTE_TABLE = {
        0, //A_NORMAL      0
        0, //A_STANDOUT    1
        1, //A_UNDERLINE   2
        2, //A_REVERSE     3
        0, //A_BLINK       4
        0, //A_DIM         5
        4, //A_BOLD        6
        0, //A_ALTCHARSET  7
        0, //A_INVIS       8

    };


    /** This method is used for initializing the curses / ncurses video
     * attributes.
     */
    protected static int getAttribute(int offset_) {
        return ATTRIBUTE_TABLE[offset_];
    }

    private static int[] ACS_TABLE = new int[]
    {
        218, //ACS_ULCORNER 0
        192, //ACS_LLCORNER 1
        191, //ACS_URCORNER 2
        217, //ACS_LRCORNER 3
        195, //ACS_LTEE     4
        180, //ACS_RTEE     5
        193, //ACS_BTEE     6
        194, //ACS_TTEE     7
        196, //ACS_HLINE    8
        179, //ACS_VLINE    9
        197, //ACS_PLUS    10
        0, //ACS_S1        11
        0, //ACS_S9        12
        254, //ACS_DIAMOND 13 //TODO check it
        178, //ACS_CKBOARD 14 //TODO check it
        0, //ACS_DEGREE    15
        0, //ACS_PLMINUS   16
        0, //ACS_BULLET    17

    };

    /** This method is used for initializing the line-drawing
     * characters using curses/ncurses.
     */
    private static int getACSchar(int offset_) {
        return ACS_TABLE[offset_];
    }

    //====================================================================
    // INSTANCE VARIABLES

    //private int _rows;
    //private int _columns;

    /**
     * A list of visible Windows.  The first in the list is at the bottom, the
     * last is on top.
     */
    private Vector _windowList = new Vector();

    /**
     * A list of color-pairs.
     */
    protected Vector _colorPairs = new Vector();

    protected EventQueue _evtQueue;

    /** Used to record keystrokes if "charva.script.record" is defined.
     */
    private static PrintStream _scriptPrintStream = null;

    /** Used to save the time the previous key was pressed.
     */
    private long _prevTimeMillis = 0;

    private long _lastMousePressTime;
    private long _lastMouseClickTime;

    // Definition as for ISO8859-1 (Latin-1) characters
    public static final char Auml = (char) 0xc4;
    public static final char Ccedil = (char) 0xc7;
    public static final char Eacute = (char) 0xc9;
    public static final char Euml = (char) 0xcb;
    public static final char Ouml = (char) 0xd6;
    public static final char Uuml = (char) 0xdc;

    /* This is a static initializer block. It is executed once,
     * when the class is initialized.
     */
    static {
        /* Check if the user wants to record or play back a script.
         */
        String scriptfilename = System.getProperty("charva.script.record");
        if (scriptfilename != null) {
            try {
                _scriptPrintStream = new PrintStream(
                        new FileOutputStream(scriptfilename));
            } catch (FileNotFoundException ef) {
                System.err.println("Cannot open script file \"" +
                        scriptfilename + "\" for writing");
                System.exit(1);
            }
        }

//	String home = System.getProperty("user.home");
//	String logfilename = home + "/charva.log";

//	System.loadLibrary("Terminal");
    }

    /** This flag is true is the system property "charva.color" has been set.
     */
    public static final boolean isColorEnabled = true;
    //(System.getProperty("charva.color") != null);

    /* These are set to match the equivalent definitions in <ncurses.h>
     * or <curses.h> (they have to be set dynamically because the values
     * differ between curses, ncurses and PDCurses).
     */
    public static final int A_NORMAL = getAttribute(0);
    public static final int A_STANDOUT = getAttribute(1);
    public static final int A_UNDERLINE = getAttribute(2);
    public static final int A_REVERSE = getAttribute(3);
    public static final int A_BLINK = getAttribute(4);
    public static final int A_DIM = getAttribute(5);
    public static final int A_BOLD = getAttribute(6);
    public static final int A_ALTCHARSET = getAttribute(7);
    public static final int A_INVIS = getAttribute(8);

    // graphical symbols that must be initialized from <ncurses.h> or
    // <curses.h>
    public static final int ACS_ULCORNER = getACSchar(0);
    public static final int ACS_LLCORNER = getACSchar(1);
    public static final int ACS_URCORNER = getACSchar(2);
    public static final int ACS_LRCORNER = getACSchar(3);
    public static final int ACS_LTEE = getACSchar(4);
    public static final int ACS_RTEE = getACSchar(5);
    public static final int ACS_BTEE = getACSchar(6);
    public static final int ACS_TTEE = getACSchar(7);
    public static final int ACS_HLINE = getACSchar(8);
    public static final int ACS_VLINE = getACSchar(9);
    public static final int ACS_PLUS = getACSchar(10);
    public static final int ACS_S1 = getACSchar(11);
    public static final int ACS_S9 = getACSchar(12);
    public static final int ACS_DIAMOND = getACSchar(13);
    public static final int ACS_CKBOARD = getACSchar(14);
    public static final int ACS_DEGREE = getACSchar(15);
    public static final int ACS_PLMINUS = getACSchar(16);
    public static final int ACS_BULLET = getACSchar(17);

    // These constants must be the same as in ncurses.h
    public static final int BLACK = getColor(0);
    public static final int RED = getColor(1);
    public static final int GREEN = getColor(2);
    public static final int YELLOW = getColor(3);
    public static final int BLUE = getColor(4);
    public static final int MAGENTA = getColor(5);
    public static final int CYAN = getColor(6);
    public static final int WHITE = getColor(7);

    public static Color _defaultForeground = Color.white;
    public static Color _defaultBackground = Color.black;

    public static final int KEY_MOUSE = 0631;

    public static final int BUTTON1_RELEASED = 000001;
    public static final int BUTTON1_PRESSED = 000002;
    public static final int BUTTON1_CLICKED = 000004;
    public static final int BUTTON2_RELEASED = 000100;
    public static final int BUTTON2_PRESSED = 000200;
    public static final int BUTTON2_CLICKED = 000400;
    public static final int BUTTON3_RELEASED = 010000;
    public static final int BUTTON3_PRESSED = 020000;
    public static final int BUTTON3_CLICKED = 040000;
}