// filename: Listbox.cpp
//   author: John Flores
//     date: May, 2003.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#include "Listbox.h"

Listbox::Listbox(int h, int w, int r, int c, Component *p) {
    height = h;
    width  = w;
    parent = p;

    win = newwin(h, w, r, c);
    keypad(win, true);
}

Listbox::~Listbox() {
    delwin(win);
}

void Listbox::display() {
    int row = 0;
    werase(win);
    for (ItmListItr item = startitem; item != list.end() && row < height - 2; item++) {
        if (item == currentitem)
            mvwprintw(win, row+1, 1, ">>%s<<", item->text.c_str());
        else
            mvwprintw(win, row+1, 1, "  %s  ", item->text.c_str());
        row++;
    }
    wborder(win, '|', '|', '-', '-', '+', '+', '+', '+');
}

void Listbox::addseparator(const char *text) {
    additem(SEPARATOR, text);
}

void Listbox::additem(int id, const char *text) {
    list.insert(list.end(), Item(id, text));
    startitem = list.begin();
    currentitem = list.begin();
}

int Listbox::getitem(int &id, char *text) {
    bool done = false;
    int keypress;
    int row  = 0;

    startitem   = list.begin();
    currentitem = list.begin();

    while (!done) {
        display();
        keypress = mvwgetch(win, row + 1, 1);

        switch (keypress) {
        case key::UP:
            do {
                if (currentitem != list.begin()) {
                    currentitem--;
                    if (row > 0)
                        row--;
                    else
                        startitem--;
                }
            } while (currentitem != list.begin() && currentitem->id == SEPARATOR);
            break;

        case key::DOWN:
            do {
                if (currentitem != list.rbegin()) {
                    currentitem++;
                    if (row < height - 3)
                        row++;
                    else
                        startitem++;
                }
            } while (currentitem != list.rbegin() && currentitem->id == SEPARATOR);
            break;

        case key::ENTER:
            id = currentitem->id;
            if (text != NULL)
                strcpy(text, currentitem->text.c_str());
            done = true;
            break;

        case key::ESCAPE:
            done = true;
            break;

        default:
            id = keypress;
            done = true;
        }
    }
    return keypress;
}

void Listbox::notify(Component *notifier) { }