ui/button.cc

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// $Id: button.cc 3342 2010-09-17 18:32:00Z java $
//
// Copyright (C) 2008-2010  Rafael Ostertag
//
// This file is part of YAPET.
//
// YAPET is free software: you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// YAPET is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along with
// YAPET.  If not, see <http://www.gnu.org/licenses/>.
//

#include "../intl.h"
#include "button.h"
#include "colors.h"
#include "basewindow.h"

using namespace YAPET::UI;

void
Button::createWindow() throw (UIException) {
    window = newwin (1, BASE_SIZE + label.length(), start_y, start_x);

    if (window == NULL)
        throw UIException (_ ("Error creating button") );

    //refresh();
}

Button::Button (std::string l, int x, int y, bool ro) : window (NULL),
                            label (l),
                            start_x (x),
                            start_y (y),
                            readonly (ro) {
    createWindow();
}

Button::~Button() {
    wclear (window);
    delwin (window);
}


void
Button::setLabel (std::string l) throw (UIException) {
    label = l;
    int retval = wclear (window);

    if (retval == ERR)
        throw UIException (_ ("Error clearing button") );

    retval = wrefresh (window);

    if (retval == ERR)
        throw UIException (_ ("Error refreshing button") );

    retval = delwin (window);

    if (retval == ERR)
        throw UIException (_ ("Error deleting button") );
}

void
Button::refresh() throw (UIException) {
    Colors::setcolor (window, BUTTON_NOFOCUS);
    int retval = werase (window);

    if (retval == ERR)
        throw UIException (_ ("Error erasing button") );

    mvwprintw (window, 0, 0, "[ %s ]", label.c_str() );
    retval = wrefresh (window);

    if (retval == ERR)
        throw UIException (_ ("Error refreshing button") );
}

int
Button::focus() throw (UIException) {
    Colors::setcolor (window, BUTTON_FOCUS);
    mvwprintw (window, 0, 0, "[ %s ]", label.c_str() );
    int retval = touchwin (window);

    if (retval == ERR)
        throw UIException (_ ("Error touching window") );

    retval = wrefresh (window);

    if (retval == ERR)
        throw UIException (_ ("Error refreshing button") );

    retval = keypad (window, TRUE);

    if (retval == ERR)
        throw UIException (_ ("Error setting keypad") );

    int ch;
    if (readonly) {
    // Simulate a tab key and bail out
    ch = '\t';
    goto BAILOUT;
    }

    while (true) {
        ch = wgetch (window);

        switch (ch) {
            case '\n':
            case KEY_ENTER:
                ch = '\n';
                onClick();
                goto BAILOUT;
            case KEY_TAB:
            case KEY_LEFT:
            case KEY_RIGHT:
            case KEY_UP:
            case KEY_DOWN:
                ch = '\t';
                goto BAILOUT;
            case KEY_ESC:
                goto BAILOUT;
            case KEY_REFRESH:
                BaseWindow::refreshAll();
                break;
#ifdef HAVE_WRESIZE
            case KEY_RESIZE:
                goto BAILOUT;
#endif // HAVE_WRESIZE
        }
    }

BAILOUT:
    Colors::setcolor (window, BUTTON_NOFOCUS);
    mvwprintw (window, 0, 0, "[ %s ]", label.c_str() );
    retval = touchwin (window);

    if (retval == ERR)
        throw UIException (_ ("Error touching window") );

    retval = wrefresh (window);

    if (retval == ERR)
        throw UIException (_ ("Error refreshing button") );

    return ch;
}