/*
xbCollapsibleLists.js 2001-02-26

Contributor(s): Michael Bostock, Netscape Communications, Copyright 1997
Bob Clary, Netscape Communications, Copyright 2001
Seth Dillingham, Macrobyte Resources, Copyright 2001
Mark Filanowicz, Amdahl IT Services, Copyright 2002
                
Netscape grants you a royalty free license to use, modify or 
distribute this software provided that this copyright notice 
appears on all copies.  This software is provided "AS IS," 
without a warranty of any kind.

See xbCollapsibleLists.js.changelog.html for details of changes.
*/


var xbcl__id = 0;
var xbcl_item_id = 0;
var xbcl_mLists = new Array();
var xbcl_parentElement = null;

document.lists = xbcl_mLists;

function List(visible, width, height, bgColor, collapsedImageURL, expandedImageURL) {

    this.lists = new Array();  // sublists
    this.items = new Array();  // layers
    this.types = new Array();  // type
    this.strs = new Array();  // content
    this.visible = visible;
    this.id = xbcl__id;
    this.width = width || 350;
    this.height = height || 22;

    this.collapsedImageURL = collapsedImageURL || '/graphicslite/leftnav_off.gif';
    this.expandedImageURL = expandedImageURL || '/graphicslite/leftnav_on.gif';

    if (bgColor)
        this.bgColor = bgColor;

    xbcl_mLists[xbcl__id++] = this;

}

function xbcl_SetFont(i, j) {
    this.fontIntro = i;
    this.fontOutro = j;
}

function xbcl_GetFont() {
    return [this.fontIntro, this.fontOutro];
}

function xbcl_setIndent(indent) {
    this.i = indent;
    if (this.i < 0) {
        this.i = 0;
        this.space = false;
    }
    else
        this.space = true;
}

function xbcl_getIndent(indent) {
    return this.i;
}

function xbcl_writeItemDOMHTML(obj, s, flList, listObj) {
    var styleObj;
    var outerDiv, innerLeft, innerRight;
    var str;
    var leftEdge = 0;

    styleObj = new xbStyle(obj);
    styleObj.setVisibility('hidden');
    outerDiv = document.createElement("DIV");
    outerDiv.id = "DIV_" + obj.id;
    styleObj = new xbStyle(outerDiv);
    styleObj.setWidth(this.width);

    if (flList) {
        innerLeft = document.createElement("DIV");
        innerLeft.style.position = "absolute";
        innerLeft.style.valign = "middle";
        leftEdge = 15;

        styleObj = new xbStyle(innerLeft);
        styleObj.setWidth(15);
        styleObj.setBackgroundColor("transparent");

        if (listObj.visible)
            str = '<A TARGET="_self" HREF="javascript:xbcl_expand(' + listObj.id + ');"><IMG BORDER="0" SRC="' + this.expandedImageURL + '" ID="_img' + listObj.id + '" NAME="_img' + listObj.id + '"></A>';
        else
            str = '<A TARGET="_self" HREF="javascript:xbcl_expand(' + listObj.id + ');"><IMG BORDER="0" SRC="' + this.collapsedImageURL + '" ID="_img' + listObj.id + '" NAME="_img' + listObj.id + '"></A>';

        innerLeft.innerHTML = str;
        outerDiv.appendChild(innerLeft);
    }
    else if (this.space)
        leftEdge = 15;

    innerRight = document.createElement("DIV");
    innerRight.noWrap = true;
    innerRight.style.position = "absolute";

    styleObj = new xbStyle(innerRight);
    styleObj.setLeft(leftEdge + (this.l * this.i));
    styleObj.setWidth(this.width - 15 - this.l * this.i);
    styleObj.setBackgroundColor("transparent");

    // start of change by Mark Filanowicz  02-22-2002
    if (flList) {
        s = this.fontIntro + '<A TARGET="_self" STYLE="text-decoration: none;" menuItemTest HREF="javascript:xbcl_expand(' + listObj.id + ');">' + s + this.fontOutro;
    }
    else {
        s = this.fontIntro + s + this.fontOutro;
    }
    // end of change by Mark Filanowicz  02-22-2002

    innerRight.innerHTML = s;
    outerDiv.appendChild(innerRight);

    obj.appendChild(outerDiv);

    return;
}

function xbcl_writeItem(obj, s, flList, listObj) {
    var cellStyle = '';
    var str = '';

    var styleObj = new xbStyle(obj);

    styleObj.setVisibility('hidden');

    if (document.body && document.body.style)
        cellStyle = ' style="background-color: transparent;"';

    str += '<TABLE WIDTH=' + this.width + ' NOWRAP BORDER="0" CELLPADDING="0" CELLSPACING="0"><TR VALIGN=middle>';

    if (flList) {
        str += '<TD WIDTH="15" NOWRAP VALIGN="MIDDLE"' + cellStyle + '>';
        str += '<A TARGET="_self" HREF="javascript:xbcl_expand(' + listObj.id + ');">';

        if (listObj.visible)
            str += '<IMG BORDER="0" SRC="' + this.expandedImageURL + '" ID="_img' + listObj.id + '" NAME="_img' + listObj.id + '">';
        else
            str += '<IMG BORDER="0" SRC="' + this.collapsedImageURL + '" ID="_img' + listObj.id + '" NAME="_img' + listObj.id + '">';

        str += '</A></TD>';
    }
    else if (this.space)
        str += '<TD WIDTH="15" NOWRAP' + cellStyle + '>&nbsp;</TD>';

    if (this.l > 0 && this.i > 0)
        str += '<TD WIDTH="' + this.l * this.i + '" NOWRAP' + cellStyle + '>&nbsp;</TD>';

    str += '<TD NOWRAP HEIGHT="' + (this.height - 3) + '" WIDTH="' + (this.width - 15 - this.l * this.i) + '" VALIGN="MIDDLE" ALIGN="LEFT"' + cellStyle + '>';

    // start of change by Mark Filanowicz  02-22-2002
    if (flList) {
        str += this.fontIntro + '<A TARGET="_self" STYLE="text-decoration: none;" HREF="javascript:xbcl_expand(' + listObj.id + ');">' + s + this.fontOutro;
    }
    else {
        str += this.fontIntro + s + this.fontOutro;
    }
    // end of change by Mark Filanowicz  02-22-2002

    str += '</TD></TR><TR HEIGHT=1><TD COLSPAN=3 BGCOLOR=WHITE></TD></TR></TABLE>';

    styleObj.setInnerHTML(str);

    return;
}

function xbcl_writeList() {
    var item;
    var i;
    var flList;

    for (i = 0; i < this.types.length; i++) {
        item = this.items[i];
        flList = (this.types[i] == 'list');

        this._writeItem(item, this.strs[i], flList, this.lists[i]);

        if (flList && this.lists[i].visible)
            this.lists[i]._writeList();
    }

    this.built = true;
    this.needsRewrite = false;
    self.status = '';
}

function xbcl_showList() {
    var item;
    var styleObj;
    var i;

    for (i = 0; i < this.types.length; i++) {
        item = this.items[i];
        styleObj = new xbStyle(item);
        styleObj.setClipLeft(0);
        styleObj.setClipRight(this.width);
        styleObj.setClipTop(0);

        if (item.height) {
            styleObj.setClipBottom(item.height);
            styleObj.setHeight(item.height);
        }
        else {
            styleObj.setClipBottom(this.height);
            styleObj.setHeight(this.height);
        }

        if (this.visible)
            styleObj.setVisibility('visible');

        var bg = item.oBgColor || this.bgColor;
        if ((bg == null) || (bg == 'null'))
            bg = '';

        styleObj.setBackgroundColor(bg);

        if (this.types[i] == 'list' && this.lists[i].visible)
            this.lists[i]._showList();
    }
    this.shown = true;
    this.needsUpdate = false;
}

function xbcl_setImage(list, item, file) {
    var id = '_img' + list.id;
    var img = null;

    // for DOMHTML or IE4 use cross browser getElementById from xbStyle
    // can't use it for NN4 since it only works for layers in NN4
    if (document.layers)
        img = item.document.images[0];
    else
        img = xbGetElementById(id);

    if (img)
        img.src = file;
}

function xbcl_getHeight() {
    var totalHeight = 0;
    var i;

    if (!this.visible)
        return 0;

    for (i = 0; i < this.types.length; i++) {
        if (this.items[i].height)
            totalHeight += this.items[i].height;
        else
            totalHeight += this.height;

        if ((this.types[i] == 'list') && this.lists[i].visible) {
            totalHeight += this.lists[i].getHeight();
        }
    }

    return totalHeight;
}

function xbcl_updateList(pVis, x, y) {
    var currTop = y;
    var item;
    var styleObj;
    var i;


    for (i = 0; i < this.types.length; i++) {
        item = this.items[i];
        styleObj = new xbStyle(item);

        if (this.visible && pVis) {
            styleObj.moveTo(x, currTop);
            if (item.height)  // allow custom heights for each item
                currTop += item.height;
            else
                currTop += this.height;

            styleObj.setVisibility('visible');
        }
        else {
            styleObj.setVisibility('hidden');
        }

        if (this.types[i] == 'list') {
            if (this.lists[i].visible) {
                if (!this.lists[i].built || this.lists[i].needsRewrite)
                    this.lists[i]._writeList();

                if (!this.lists[i].shown || this.lists[i].needsUpdate)
                    this.lists[i]._showList();

                xbcl_setImage(this.lists[i], item, this.expandedImageURL);
            }
            else
                xbcl_setImage(this.lists[i], item, this.collapsedImageURL);

            if (this.lists[i].built)
                currTop = this.lists[i]._updateList(this.visible && pVis, x, currTop);
        }
    }
    return currTop;
}

function xbcl_updateParent(pid, l) {
    var i;

    if (!l)
        l = 0;

    this.pid = pid;
    this.l = l;

    for (i = 0; i < this.types.length; i++) {
        if (this.types[i] == 'list') {
            this.lists[i]._updateParent(pid, l + 1);
        }
    }
}

function xbcl_expand(i) {
    xbcl_mLists[i].visible = !xbcl_mLists[i].visible;

    if (xbcl_mLists[i].onexpand != null)
        xbcl_mLists[i].onexpand(xbcl_mLists[i].id);

    xbcl_mLists[xbcl_mLists[i].pid].rebuild();

    if (xbcl_mLists[i].postexpand != null)
        xbcl_mLists[i].postexpand(xbcl_mLists[i].id);
}

function xbcl_build(x, y) {
    this.x = x;
    this.y = y; 
    this._updateParent(this.id);
    this._writeList();
    this._showList();
    this._updateList(true, this.x, this.y);


}

function xbcl_rebuild() {
    this._updateList(true, this.x, this.y);
}

function xbcl_getNewItem() {
    var newItem = null;

    newItem = xbGetElementById('lItem' + xbcl_item_id);

    if (!newItem) {
        if (document.all && !document.getElementById) {
            var parentElement = this.parentElement;
            if (!parentElement)
                parentElement = document.body;

            parentElement.insertAdjacentHTML('beforeEnd', '<div id="lItem' + xbcl_item_id + '" style="position:absolute;"></div>');

            newItem = xbGetElementById('lItem' + xbcl_item_id);
        }
        else if (document.layers) {
            if (this.parentElement)
                newItem = new Layer(this.width, this.parentElement);
            else
                newItem = new Layer(this.width);
        }
        else if (document.createElement) {
            newItem = document.createElement('div');
            newItem.id = 'lItem' + xbcl_item_id;
            newItem.style.position = 'absolute';

            if (this.parentElement)
                this.parentElement.appendChild(newItem);
            else
                document.body.appendChild(newItem);
        }
    }

    return newItem;
}

function xbcl_addItem(str, bgColor, item) {
    if (!item)
        item = this._getNewItem();

    if (!item)
        return;

    if (bgColor)
        item.oBgColor = bgColor;

    this.items[this.items.length] = item;
    this.types[this.types.length] = 'item';
    this.strs[this.strs.length] = str;
    ++xbcl_item_id;

    if (this.built) {
        this._writeItem(item, str, false);
        xbcl_mLists[this.pid].rebuild();
        if (this.visible)
            this._showList();
        else
            this.needsUpdate = true;
    }

    return item;
}

function xbcl_addList(list, str, bgColor, item) {
    if (!item)
        item = this._getNewItem();

    if (!item)
        return;

    if (bgColor)
        item.oBgColor = bgColor;

    this.lists[this.items.length] = list;
    this.items[this.items.length] = item;
    this.types[this.types.length] = 'list';
    this.strs[this.strs.length] = str;
    ++xbcl_item_id;

    list.parentList = this;

    list.pid = this.pid;
    list.l = this.l + 1;

    if (this.built) {
        this._writeItem(item, str, true, list);
        xbcl_mLists[this.pid].rebuild();
        if (this.visible)
            this._showList();
        else
            this.needsUpdate = true;
    }

    return item;
}

List.prototype.setIndent = xbcl_setIndent;
List.prototype.getIndent = xbcl_getIndent;
List.prototype.addItem = xbcl_addItem;
List.prototype.addList = xbcl_addList;
List.prototype.build = xbcl_build;
List.prototype.rebuild = xbcl_rebuild;
List.prototype.setFont = xbcl_SetFont;
List.prototype.getFont = xbcl_GetFont;
List.prototype.getHeight = xbcl_getHeight;

List.prototype._writeList = xbcl_writeList;
List.prototype._getNewItem = xbcl_getNewItem;

//if ( document.getElementById && document.createElement )
//  List.prototype._writeItem  = xbcl_writeItemDOMHTML;
//else
List.prototype._writeItem = xbcl_writeItem;

List.prototype._showList = xbcl_showList;
List.prototype._updateList = xbcl_updateList;
List.prototype._updateParent = xbcl_updateParent;

List.prototype.onexpand = null;
List.prototype.postexpand = null;
List.prototype.lists = null;  // sublists
List.prototype.items = null;  // layers
List.prototype.types = null;  // type
List.prototype.strs = null;  // content
List.prototype.x = 0;
List.prototype.y = 0;
List.prototype.visible = false;
List.prototype.id = -1;
List.prototype.i = 18;
List.prototype.space = true;
List.prototype.pid = 0;
List.prototype.fontIntro = '';
List.prototype.fontOutro = '';
List.prototype.width = 350;
List.prototype.height = 22;
List.prototype.built = false;
List.prototype.shown = false;
List.prototype.needsUpdate = false;
List.prototype.needsRewrite = false;
List.prototype.l = 1;
List.prototype.bgColor = null;
List.prototype.parentList = null;
List.prototype.parentElement = null;