slidePresenter Code

/*
    This file is part of slidePresenter: real-time slideshow presentations via web browser

    Copyright (C) 2006  Allen Shaw

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    $Id$
*/

// Functions useful for improving control functionality

var common_controls_sets = new Array();

function addSetItem(set, id, val) {
    common_controls_sets[set][id] = val;
    return 1;
}


function setInfoBox(box,set,id) {

    value = common_controls_sets[set][id]
    value = value.replace(/&lt;/g, '<');
    value = value.replace(/&gt;/g, '>');
    value = value.replace(/&quot;/g, '"');
    value = value.replace(/&amp;/g, '&');
    setControlValue(box,value);
    return 1;
}

function disableControl(controlId, val, reverse){
    element = document.getElementById(controlId);
    if (reverse) {
        if (val) {
            element.disabled = false;
        } else {
            element.disabled = true;
        }
    } else {
        element.disabled = val;
    }
    return 1;
}

function hideControl(controlId, val, reverse){
    element = document.getElementById(controlId);
    if (reverse) {
        show = "hidden";
        hide = "visible";
    } else {
        show = "visible";
        hide = "hidden";
    }

    if (val) {
        element.style.visibility = hide;
    } else {
        element.style.visilibity = show;
    }
    return 1;
}

function collapseControl(controlId, val, reverse){
    element = document.getElementById(controlId);
    if (reverse) {
        show = "none";
        hide = "block";
    } else {
        show = "block";
        hide = "none";
    }

    if (val) {
        element.style.display = hide;
    } else {
        element.style.display = show;
    }
    return 1;
}

function setControlValue(controlId,val) {
    element = document.getElementById(controlId);
    if (element.type == "checkbox") {
        element.checked = val
    } else {
        element.value = val
    }
    return 1;
}

function appendControlValue(controlId,val) {
    var element;
    var space = '';
    element = document.getElementById(controlId);
    if (element.value) {
        space = ' ';
    }
    element.value =  element.value + space + val;
    return 1;
}

function moveSelectOption(controlId,rel,setFocus) {

    var element;
    element = document.getElementById(controlId);
    var index = element.selectedIndex;
    var total = element.options.length-1;

    if (setFocus) {
        element.focus();
    }
    if (index == -1) return false;
    if (rel == +1 && index == total) return false;
    if (rel == -1 && index == 0) return false;

    var items = new Array;
    var values = new Array;

    for (i = total; i >= 0; i--) {
        items[i] = element.options[i].text;
        values[i] = element.options[i].value;
    }
    for (i = total; i >= 0; i--) {
        if (index == i) {
            element.options[i + rel] = new Option(items[i],values[i], 0, 1);
            element.options[i] = new Option(items[i + rel], values[i + rel]);
            i--;
        }
        else {
            element.options[i] = new Option(items[i], values[i]);
       }
    }
    return 1;
}

function deleteSelectOption(controlId,setFocus) {
    var element = document.getElementById(controlId);
    var index = element.selectedIndex;
    element.options[index] = null;

    if (setFocus) {
        element.focus();
        if (element.options[index]) {
            element.selectedIndex = index;
        } else {
            element.selectedIndex = element.options.length - 1;;
        }
    }

    return 1;
}

function appendSelectOption(controlId,text,value,setFocus) {
    var element = document.getElementById(controlId);
    var total = element.options.length;
    element.options[total] = new Option(text,value);
    element.selectedIndex = total;

    if (setFocus) {
        element.focus();
        if (element.options[index]) {
            element.selectedIndex = index;
        } else {
            element.selectedIndex = 0;
        }
    }

    return 1;
}

function setAction(id, formId){
    document.getElementById('action'+formId).value = id;
}