// aimsDHTML.js
/*
*  JavaScript template file for ArcIMS HTML Viewer
*               dependent on aimsXML.js, ArcIMSparam.js, aimsCommon.js, aimsMap.js,
*               aimsLayers.js
*/

aimsDHTMLPresent=true;


/*
***************************************************************************************

DHTML layer functions

***************************************************************************************
*/

// Create a DHTML layer
function createLayer(name, inleft, intop, width, height, visible, content) {
          var layer;
          if (isNav4) {
            document.writeln('<layer name="' + name + '" left=' + inleft + ' top=' + intop + ' width=' + width + ' height=' + height +  ' visibility=' + (visible ? '"show"' : '"hide"') +  '>');
            document.writeln(content);
            document.writeln('</layer>');
          } else {
            document.writeln('<div id="' + name + '" style="position:absolute; overflow:hidden; left:' + inleft + 'px; top:' + intop + 'px; width:' + width + 'px; height:' + height + 'px;' + '; z-index:1; visibility:' + (visible ? 'visible;' : 'hidden;') +  '">');
            document.writeln(content);
            document.writeln('</div>');
          }
}

// get the layer object called "name"
function getLayer(name) {
          if (isNav4)
            return(document.layers[name]);
          else if (isIE4) {
            layer = eval('document.all.' + name + '.style');
            return(layer);
          } else if (is5up) {
                var theObj = document.getElementById(name);
                return theObj.style
          }
          else
            return(null);
}

// get the layer object called "name" if in OverviewFrame
function getOVLayer(name) {
        if (parent.OverviewFrame!=null) {
                  if (isNav4)
                    return(parent.OverviewFrame.document.layers[name]);
                  else if (isIE4) {
                    layer = eval('parent.OverviewFrame.document.all.' + name + '.style');
                    return(layer);
                  } else if (is5up) {
                        var theObj = parent.OverviewFrame.document.getElementById(name);
                        return theObj.style
                  }
                  else
                    return(null);
        } else
                return getLayer(name);
}

function isVisible(name) {
          var layer = getLayer(name);
          if (isNav && layer.visibility == "show")
            return(true);
          if (isIE && layer.visibility == "visible")
            return(true);
          return(false);
}


// move layer to x,y
function moveLayer(name, x, y) {
        var layer = getLayer(name);
        if (isNav4)
        layer.moveTo(x, y);
        //if (document.all) {
         else {
        layer.left = x + "px";
                 layer.top  = y + "px";
        }
}

// set layer background color
function setLayerBackgroundColor(name, color) {
        var layer = getLayer(name);
         if (isNav4)
        layer.bgColor = color;
        //else if (document.all)
        else
        layer.backgroundColor = color;
}

// toggle layer to invisible
function hideLayer(name) {
        var layer = getLayer(name);
        if (isNav4)
        layer.visibility = "hide";
        //if (document.all)
        else
                 layer.visibility = "hidden";
                 //layer.display="none";
}

// toggle layer to visible
function showLayer(name) {
        var layer = getLayer(name);
        if (isNav4)
        layer.visibility = "show";
        //if (document.all)
        else
         layer.visibility = "visible";
         //layer.display="block";
}

// toggle Overview layer to visible - if in OverviewFrame
function showOVLayer(name) {
        var layer = getOVLayer(name);
        if (isNav4)
        layer.visibility = "show";
        //if (document.all)
        else
         layer.visibility = "visible";
         //layer.display="block";
}

// toggle Overview layer to invisible - if in OverviewFrame
function hideOVLayer(name) {
        var layer = getOVLayer(name);
        if (isNav4)
        layer.visibility = "hide";
        //if (document.all)
        else
         layer.visibility = "hidden";
         //layer.display="block";
}

// clip layer display to clipleft, cliptip, clipright, clipbottom
        // Not working with Mozilla Milestone 12 (Nav5)
function clipLayer2(name, clipleft, cliptop, clipright, clipbottom) {
          var layer = getLayer(name);
          if (isNav4) {
                    layer.clip.left   = clipleft;
                    layer.clip.top    = cliptop;
                    layer.clip.right  = clipright;
                    layer.clip.bottom = clipbottom;
          }
          //if (document.all)
          else if (isIE) {
                    layer.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
          }
}

function clipLayer(name, clipleft, cliptop, clipright, clipbottom) {
          var layer = getLayer(name);
          if (isNav4) {
                    layer.clip.left   = clipleft;
                    layer.clip.top    = cliptop;
                    layer.clip.right  = clipright;
                    layer.clip.bottom = clipbottom;
          }       else {
                    //layer.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
                        var newWidth = clipright - clipleft;
                        var newHeight = clipbottom - cliptop;
                        layer.height = newHeight;
                        layer.width     = newWidth;
                        //var theTop = parseInt((parseFloat(cliptop) * 10 + 0.5)/10);
                        //var theLeft = parseInt((parseFloat(clipleft) * 10 + 0.5)/10);
                        //alert(cliptop + " " + clipleft);
                        layer.top       = cliptop  + "px";
                        layer.left      = clipleft + "px";
                        //layer.display= "none";
                }

}

// clip layer in OverviewFrame
function clipOVLayer(name, clipleft, cliptop, clipright, clipbottom) {
          var layer = getLayer(name);
          if (parent.OverviewFrame!=null) layer = getOVLayer(name);
          if (isNav4) {
                    layer.clip.left   = clipleft;
                    layer.clip.top    = cliptop;
                    layer.clip.right  = clipright;
                    layer.clip.bottom = clipbottom;
          }       else {
                    //layer.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
                        if ((clipright.isNaN) || (clipleft.isNaN) || (cliptop.isNaN) || (clipbottom.isNaN)) {
                                layer.visibility = "hidden";
                        } else {
                                var newWidth = clipright - clipleft;
                                var newHeight = clipbottom - cliptop;
                                if ((newWidth<=0) || (newHeight<=0)) {
                                        layer.visibility = "hidden";
                                } else {
                                        //if (newWidth.isNaN) newWidth = parseInt(i2Width);
                                        //if (newHeight.isNaN) newHeight = parseInt(i2Height);
                                        //alert(newWidth + "," + newHeight);

                                        layer.height = newHeight;
                                        layer.width     = newWidth;
                                        //var theTop = parseInt((parseFloat(cliptop) * 10 + 0.5)/10);
                                        //var theLeft = parseInt((parseFloat(clipleft) * 10 + 0.5)/10);
                                        //alert(cliptop + " " + clipleft);
                                        layer.top       = cliptop  + "px";
                                        layer.left      = clipleft + "px";
                                        //layer.display= "none";
                                        layer.visibility = "visible";
                                }
                        }
                }

}

// replace layer's content with new content
        // not working with Mozilla Milestone 12 (Nav5)
function replaceLayerContent(name, content) {
          if (isNav4) {
                    var layer = getLayer(name);
                    layer.document.open();
                    layer.document.writeln(content);
                    layer.document.close();
          }  else if (isIE) {
                    var str = "document.all." + name + ".innerHTML = '" + content + "'";
                    eval(str);
          }
}

/*
// get window width
function getWinWidth() {
          if (isNav)
                return(window.innerWidth);
          else if (isIE)
                return(document.body.clientWidth);
          else
                return(null);
}

// get window height
function getWinHeight() {
        if (isNav)
            return(window.innerHeight);
        else if (isIE)
            return(document.body.clientHeight);
        else
            return(null);
}
*/

// toggle Overview Map display
function toggleOVMap() {
        if (imsURL!="") {
                ovIsVisible = !ovIsVisible;
                if (ovIsVisible) {
                        //showRetrieveMap();
                        //var theString = writeOVXML();
                        putExtentOnOVMap();
                        showLayer("ovLayer");
                        showLayer("ovShadow");

                } else {
                        hideLayer("ovLayer");
                        hideLayer("ovShadow");

                        hideLayer("zoomOVBoxTop");
                        hideLayer("zoomOVBoxLeft");
                        hideLayer("zoomOVBoxRight");
                        hideLayer("zoomOVBoxBottom");
                        //if (!isNav4) {
                        //      hideLayer("ovBox");
                        //}

                }
                if (isIE) {
                        document.all.theTop.style.cursor = theCursor;
                }
        } else {
                alert(msgList[45]);
        }

}

// plot extent box on overview map - only for Overview if in OverviewFrame
function putExtentOnOVMap() {
        var ovXincre = fullOVWidth / i2Width;
        var ovYincre = fullOVHeight / i2Height;
        var vleft = (eLeft - fullOVLeft) / ovXincre + ovBorderWidth;
        var vright = (eRight - fullOVLeft) / ovXincre + ovBorderWidth;
        var vtop = (fullOVTop - eTop) / ovYincre + ovBorderWidth;
        var vbottom = (fullOVTop - eBottom) / ovYincre + ovBorderWidth;
        //if (vleft<ovHspc) vleft = ovHspc;
        //if (vtop<ovVspc) vtop = ovVspc;
        if (vright>i2Width+ovBorderWidth) vright = i2Width;
        if (vbottom>i2Height+ovBorderWidth) vbottom = i2Height;
        if (!isNav4) {
                vleft = vleft + ovHspc;
                vright = vright + ovHspc;
                vtop = vtop + ovVspc;
                vbottom = vbottom + ovVspc;
        }
        if (eTop>fullOVBottom) {
                clipOVLayer("zoomOVBoxTop",vleft,vtop-ovExtentBoxSize,vright,vtop);
                showOVLayer("zoomOVBoxTop");
        } else {
                hideOVLayer("zoomOVBoxTop");
        }
        if (eLeft<fullOVRight) {
                clipOVLayer("zoomOVBoxLeft",vleft-ovExtentBoxSize,vtop-ovExtentBoxSize,vleft,vbottom);
                showOVLayer("zoomOVBoxLeft");
        } else {
                hideOVLayer("zoomOVBoxLeft");
        }
        if (eRight>fullOVLeft) {
                clipOVLayer("zoomOVBoxRight",vright,vtop-ovExtentBoxSize,vright+ovExtentBoxSize,vbottom);
                showOVLayer("zoomOVBoxRight");
        } else {
                hideOVLayer("zoomOVBoxRight");
        }
        if (eBottom<fullOVTop) {
                clipOVLayer("zoomOVBoxBottom",vleft,vbottom-ovExtentBoxSize,vright,vbottom);
                showOVLayer("zoomOVBoxBottom");
        } else {
                hideOVLayer("zoomOVBoxBottom");

        }

}

function boxIt(theLeft,theTop,theRight,theBottom) {

                if (!isNav4) {
                        theTop = theTop + vspc;
                        theBottom = theBottom + vspc;
                        theLeft = theLeft + hspc;
                        theRight = theRight + vspc;
                }
                clipLayer("zoomBoxTop",theLeft,theTop,theRight,theTop+ovBoxSize);
                clipLayer("zoomBoxLeft",theLeft,theTop,theLeft+ovBoxSize,theBottom);
                clipLayer("zoomBoxRight",theRight-ovBoxSize,theTop,theRight,theBottom);
                clipLayer("zoomBoxBottom",theLeft,theBottom-ovBoxSize,theRight,theBottom);
                showLayer("zoomBoxTop");
                showLayer("zoomBoxLeft");
                showLayer("zoomBoxRight");
                showLayer("zoomBoxBottom");

}