// 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 1.9 2004/04/21 17:56:58 pspencer 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
        else this.css.pixelLeft = this.x
    }
    if (y!=null) {
        this.y = y
        if (is.ns) this.css.top = this.y
        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) {
    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
        this.css.clip.right = r
        this.css.clip.bottom = b
        this.css.clip.left = l
    }
    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)
}