// Dynamic Layer Object
// sophisticated layer/element targeting and animation object which provides the core functionality needed in most DHTML applications
// 19990604

// Copyright (C) 1999 Dan Steinman
// Distributed under the terms of the GNU Library General Public License
// Available at http://www.dansteinman.com/dynapi/
/**
 *
 * @project     CWC2
 * @revision    $Id: dynlayer.js,v 1.11 2005/07/20 16:11:38 bartvde Exp $
 * @purpose     Used with PanMap widget
 * @author      DM Solutions Group (assefa@dmsolutions.ca)
 * @copyright
 * <b>Copyright (c) 2002, DM Solutions Group Inc.</b>
 * 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.
 */
function DynLayer(id,nestref,frame) {
        //alert("DynaLayer");
        if (!is.ns5 && !DynLayer.set && !frame) DynLayerInit();
    this.frame = frame || self;
    if (is.ns) {
        if (is.ns4) {
            if (!frame) {
                if (!nestref) var nestref = DynLayer.nestRefArray[id];
                if (!DynLayerTest(id,nestref)) return;
                this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id];
            }
            else
                       {
                            this.css = (nestref)? eval("frame.document."+nestref+".document."+id) : frame.document.layers[id];
                       }
            this.elm = this.event = this.css;
            this.doc = this.css.document;
                        this.x = this.css.left;
                this.y = this.css.top;
                this.w = this.css.clip.width;
                this.h = this.css.clip.height;
        }
        else if (is.ns5) {
            this.elm = document.getElementById(id);
            this.css = this.elm.style;
            this.doc = document;
        
                //this.x = this.css.left;
                //this.y = this.css.top;
                //this.w = this.css.clip.width;
                //this.h = this.css.clip.height;
                        this.x = CWCDHTML_FindObjectPosX( document.getElementById('mapFrameTL')) + 1;
                this.y = CWCDHTML_FindObjectPosY( document. getElementById('mapFrameTL')) + 1;
                this.w = gMapWiWidth;
                this.h = gMapWiHeight;
                }
        
    }
    else if (is.ie) {
        this.elm = this.event = this.frame.document.all[id];
        this.css = this.frame.document.all[id].style;
        this.doc = document;
        this.x = this.elm.offsetLeft;
        this.y = this.elm.offsetTop;
        this.w = (is.ie4)? this.css.pixelWidth : this.elm.offsetWidth;
        this.h = (is.ie4)? this.css.pixelHeight : this.elm.offsetHeight;
    }
    this.id = id;
    this.nestref = nestref;
    this.obj = id + "DynLayer";
    eval(this.obj + "=this");
}
function DynLayerMoveTo(x,y) {
    if (x!=null) {
        this.x = x;
        if (is.ns) this.css.left = this.x + "px";
        else this.css.pixelLeft = this.x;
    }
    if (y!=null) {
        this.y = y;
        if (is.ns) this.css.top = this.y+ "px";
        else this.css.pixelTop = this.y;
    }
}
function DynLayerMoveBy(x,y) {
    this.moveTo(this.x+x,this.y+y);
}
function DynLayerShow() {
    this.css.visibility = (is.ns4)? "show" : "visible";
}
function DynLayerHide() {
    this.css.visibility = (is.ns4)? "hide" : "hidden";
}
DynLayer.prototype.moveTo = DynLayerMoveTo;
DynLayer.prototype.moveBy = DynLayerMoveBy;
DynLayer.prototype.show = DynLayerShow;
DynLayer.prototype.hide = DynLayerHide;
DynLayerTest = new Function('return true');

// DynLayerInit Function
function DynLayerInit(nestref) {
        //alert("DynLayerInit");
        
    if (!DynLayer.set) DynLayer.set = true;
    if (is.ns) {
        if (nestref) ref = eval('document.'+nestref+'.document');
        else {nestref = ''; ref = document;}
        for (var i=0; i<ref.layers.length; i++) {
            var divname = ref.layers[i].name;
            DynLayer.nestRefArray[divname] = nestref;
            var index = divname.indexOf("Div");
            if (index > 0) {
       
                eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")');
            }
            if (ref.layers[i].document.layers.length > 0) {
                DynLayer.refArray[DynLayer.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.document.'+ref.layers[i].name;
            }
        }
        if (DynLayer.refArray.i < DynLayer.refArray.length) {
            DynLayerInit(DynLayer.refArray[DynLayer.refArray.i++]);
        }
    }
    else if (is.ie) {
        for (var i=0; i<document.all.tags("DIV").length; i++) {
            var divname = document.all.tags("DIV")[i].id;
            var index = divname.indexOf("Div");
            if (index > 0) {
                eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")');
            }
        }
    }
    return true;
}
DynLayer.nestRefArray = new Array();
DynLayer.refArray = new Array();
DynLayer.refArray.i = 0;
DynLayer.set = false;

// Slide Methods
function DynLayerSlideTo(endx,endy,inc,speed,fn) {
    if (endx==null) endx = this.x;
    if (endy==null) endy = this.y;
    var distx = endx-this.x;
    var disty = endy-this.y;
    this.slideStart(endx,endy,distx,disty,inc,speed,fn);
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
    var endx = this.x + distx;
    var endy = this.y + disty;
    this.slideStart(endx,endy,distx,disty,inc,speed,fn);
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
    if (this.slideActive) return;
    if (!inc) inc = 10;
    if (!speed) speed = 20;
    var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc;
    if (num==0) return;
    var dx = distx/num;
    var dy = disty/num;
    if (!fn) fn = null;
    this.slideActive = true;
    this.slide(dx,dy,endx,endy,num,1,speed,fn);
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
    if (!this.slideActive) return;
    if (i++ < num) {
        this.moveBy(dx,dy);
        this.onSlide();
        if (this.slideActive) setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed);
        else this.onSlideEnd();
    }
    else {
        this.slideActive = false;
        this.moveTo(endx,endy);
        this.onSlide();
        this.onSlideEnd();
        eval(fn);
    }
}
function DynLayerSlideInit() {}
DynLayer.prototype.slideInit = DynLayerSlideInit;
DynLayer.prototype.slideTo = DynLayerSlideTo;
DynLayer.prototype.slideBy = DynLayerSlideBy;
DynLayer.prototype.slideStart = DynLayerSlideStart;
DynLayer.prototype.slide = DynLayerSlide;
DynLayer.prototype.onSlide = new Function();
DynLayer.prototype.onSlideEnd = new Function();

// Clip Methods
function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
    if (is.ie) {
        if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft);
        else if (is.ie4) this.clipTo(0,this.css.pixelWidth,this.css.pixelHeight,0);
    }
}
function DynLayerClipTo(t,r,b,l) {
    t = parseInt(t);
    r = parseInt(r);
    b = parseInt(b);
    l = parseInt(l);
    if (t==null) t = this.clipValues('t');
    if (r==null) r = this.clipValues('r');
    if (b==null) b = this.clipValues('b');
    if (l==null) l = this.clipValues('l');
    if (is.ns && !is.ns5) {
        this.css.clip.top = t + "px";
        this.css.clip.right = r + "px";
        this.css.clip.bottom = b + "px";
        this.css.clip.left = l + "px";
    }
    else if (is.ie) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)";
        else if (is.ns5)
        {
             //CWCDHTML_ClipLayer( 'MapLayerDiv', l, t, r, b );
             var layer = CWCDHTML_GetLayer('MapLayerDiv');
             layer.clip = "rect("+t+"px,"+r+"px,"+b+"px,"+l+"px)";
             //window.status = "rect("+t+"px,"+r+"px,"+b+"px,"+l+"px)";
        }
}
function DynLayerClipBy(t,r,b,l) {
    //window.status = "DynLayerClipBy";
    this.clipTo(this.clipValues('t')+t,this.clipValues('r')+r,this.clipValues('b')+b,this.clipValues('l')+l);
}
function DynLayerClipValues(which) {
    if (is.ie || is.ns5) 
    {
        var re1 = /,/gi;
        var re2 = / /gi;
        var l1 = this.css.clip.replace( re1, "" );
        l1 = l1.replace( re2, "" );
        var clipv = l1.split("rect(")[1].split(")")[0].split("px");
    }
    
    if (which=="t") return (is.ns && !is.ns5)? this.css.clip.top : Number(clipv[0]);
    if (which=="r") return (is.ns && !is.ns5)? this.css.clip.right : Number(clipv[1]);
    if (which=="b") return (is.ns && !is.ns5)? this.css.clip.bottom : Number(clipv[2]);
    if (which=="l") return (is.ns && !is.ns5)? this.css.clip.left : Number(clipv[3]);
}
DynLayer.prototype.clipInit = DynLayerClipInit;
DynLayer.prototype.clipTo = DynLayerClipTo;
DynLayer.prototype.clipBy = DynLayerClipBy;
DynLayer.prototype.clipValues = DynLayerClipValues;

// Write Method
function DynLayerWrite(html) {
    if (is.ns) {
        this.doc.open();
        this.doc.write(html);
        this.doc.close();
    }
    else if (is.ie) {
        this.event.innerHTML = html;
    }
}
DynLayer.prototype.write = DynLayerWrite;

// BrowserCheck Object
function BrowserCheck() {
    var b = navigator.appName;
    if (b=="Netscape") this.b = "ns";
    else if (b=="Microsoft Internet Explorer") this.b = "ie";
    else this.b = b;
    this.version = navigator.appVersion;
        this.v = parseInt(this.version);
    this.ns = (this.b=="ns" && this.v>=4);
    this.ns4 = (this.b=="ns" && this.v==4);
    this.ns5 = (this.b=="ns" && this.v==5);
    this.ie = (this.b=="ie" && this.v>=4);
    this.ie4 = (this.version.indexOf('MSIE 4')>0);
    this.ie5 = (this.version.indexOf('MSIE 5')>0);
    this.min = (this.ns||this.ie);
}
is = new BrowserCheck();

// CSS Function
function css(id,left,top,width,height,color,vis,z,other) {
    if (id=="START") return '<STYLE TYPE="text/css">\n';
    else if (id=="END") return '</STYLE>';
    var str = (left!=null && top!=null)? '#'+id+' {position:absolute; left:'+left+'px; top:'+top+'px;' : '#'+id+' {position:relative;';
    if (arguments.length>=4 && width!=null) str += ' width:'+width+'px;';
    if (arguments.length>=5 && height!=null) {
        str += ' height:'+height+'px;';
        if (arguments.length<9 || other.indexOf('clip')==-1) str += ' clip:rect(0px '+width+'px '+height+'px 0px);';
    }
    if (arguments.length>=6 && color!=null) str += (is.ns)? ' layer-background-color:'+color+';' : ' background-color:'+color+';';
    if (arguments.length>=7 && vis!=null) str += ' visibility:'+vis+';';
    if (arguments.length>=8 && z!=null) str += ' z-index:'+z+';';
    if (arguments.length==9 && other!=null) str += ' '+other;
    str += '}\n';
    return str;
}
function writeCSS(str,showAlert) {
    str = css('START')+str+css('END');
    document.write(str);
    if (showAlert) alert(str);
}