/*********************************************************************************
 Copyright (c) 2002-2005 Armin Burger
 
 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 AUTHOR OR 
 COPYRIGHT HOLDER 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.
**********************************************************************************/


//********************************************************
// CONFIGURATION
//********************************************************//


// SET TO TRUE IF CURSOR SHALL CHANGE ACCORDING TO ACTIVE TOOL
var useCustomCursor = true;



//******************************************************* //
//         JAVASCRIPT FUNCTIONS FOR ZOOM, QUERY,          //
//******************************************************* //

/* Specifies how far (in pixels) a user needs to drag the mouse
 * to enable zoom to rectangle, otherwise zoom to point.
 * Should be set to >3
 ****************************************************************/
var jitter = 10;


/*****************************************************************************
 * FUNCTION IS CALLED BY ZOOMBOX -> FUNCTION chkMouseUp(e)
 * main function for zoom/pan interface
 * calls different zoom functions (see below)
 *****************************************************************************/
function zoombox_apply(minx, miny, maxx, maxy) {
    var imgbox = minx + "+" + miny + "+" + maxx + "+" + maxy;
    var imgxy  = minx + "+" + miny;

    // NORMAL MOUSE ACTIONS IN MAIN MAP //
    if (refmapClick == false) {

        // ZOOM/PAN ACTIONS
        if (document.varform.mode.value == 'map' || rightMouseButton) {
            showloading();
            // Only click
            if ((minx + jitter) > maxx && (miny + jitter) > maxy) {
                if (document.varform.zoom_type.value == 'zoomrect') {
                    if (rightMouseButton) {
                        zoom_factor = 1; 
                    } else {
                        zoom_factor = 2;
                    }
                    zoompoint(zoom_factor, imgxy);
                    
                } else {
                   // Pan
                   var zoom_factor = document.varform.zoom_factor.value;
                   zoompoint(zoom_factor, imgxy);
                }
            
            // Zoombox 
            } else {
                zoomin(imgbox);
            }

        // QUERY/IDENTIFY ACTIONS
        // query on all visible groups
        } else if (document.varform.mode.value == 'query') {
            showqueryresult('query', imgxy);
        // query only on selected group with multiselect
        } else if (document.varform.mode.value == 'nquery') {
            if (document.selform.selgroup.selectedIndex != -1) {
                // only with single click
                if ((minx + jitter) > maxx && (miny + jitter) > maxy) {     // x/y point
                    showqueryresult('nquery', imgxy);
                // with zoom box
                } else {
                    showqueryresult('nquery', imgbox);                      // rectangle
                }
            }
        } else if (document.varform.mode.value == 'digitize') {
            openDigitizeDlg(imgxy);
        } else if (document.varform.mode.value == 'coords') {
            showCoords(imgxy);
        }

    // ACTIONS IN REF MAP //
    } else {
        zoomref(imgxy);
    }
}



/*****************************************************************************
 * ZOOM FUNCTIONS
 *******************/

/*
 * UPDATE MAP BY RE-LOADING LOAD URL
 *************************************/
function updateMap0(mapurl) { 
    //alert(mapurl);
    var loadFrameDiv = document.getElementById('loadFrame'); 
    if (!loadFrameDiv) {
        loadFrameDiv = window.parent.document.getElementById('loadFrame');
    }
    getMap(mapurl, '');
}


/*
 * ZOOM TO POINT
 *****************/
function zoompoint(zoomfactor, imgxy) {
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoompoint&zoom_factor='+zoomfactor+'&imgxy='+imgxy;
    showloading();
    updateMap(mapurl, '');
}


function extent2scale(geoextent) {
    geoextent=geoextent.replace(/ /g, "+");
    var arrExtent = geoextent.split("+");
    var minx = parseFloat(arrExtent[0]);
    var miny = parseFloat(arrExtent[1]);
    var maxx = parseFloat(arrExtent[2]);
    var maxy = parseFloat(arrExtent[3]);
    var scalex = parseInt(1 / (mapW / (maxx - minx)) / (0.0254 / resolution), 10);
    var scaley = parseInt(1 / (mapH / (maxy - miny)) / (0.0254 / resolution), 10);

    if(scalex > scaley) {
        return scalex;
    }

    return scaley;
}

function updateExtent(geoextent, scale) {
    geoextent=geoextent.replace(/ /g, "+");
    var arrExtent = geoextent.split("+");

    var minx = parseFloat(arrExtent[0]);
    var maxx = parseFloat(arrExtent[2]);
    var ptRefx = parseFloat(minx + ((maxx - minx) / 2));
    var distancex = parseFloat(scale * mapW * (0.0254 / resolution));
    arrExtent[0] = parseFloat(ptRefx - (distancex / 2));
    arrExtent[2] = parseFloat(ptRefx + (distancex / 2));    

    var miny = parseFloat(arrExtent[1]);
    var maxy = parseFloat(arrExtent[3]);
    var ptRefy = parseFloat(miny + ((maxy - miny) / 2));
    var distancey = parseFloat(scale * mapH * (0.0254 / resolution));
    arrExtent[1] = parseFloat(ptRefy - (distancey / 2));
    arrExtent[3] = parseFloat(ptRefy + (distancey / 2));

    return arrExtent.join("+");
}


/*
 * ZOOM TO RECTANGLE
 ********************/
function zoomin(extent) {
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomrect&imgbox='+extent  ;
    //alert(mapurl);
    updateMap(mapurl, '');
}

/*
 * ZOOM TO GEO-EXTENT (MAP UNITS), APPLIED FROM INFO PAGE LINK
 ***************************************************************/
function zoom2extent(layer,idx,geoextent) {
    showloading();
    /*if (top.infoWin == "frame") {
       stoploading();
    } else {
       opener.parent.mapFrame.stoploading();
    }*/
    // Check if resultlayers shall be passed
    if (layer == 0 && idx == 0) {                            // no
        var layerstring = '';
    } else {
        var layerstring = '&resultlayer='+layer+'+'+idx;     // yes
    }

    var curScale = extent2scale(geoextent);

    if(curScale < scaleMin) {
        geoextent = updateExtent(geoextent, scaleMin);
    }

    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomextent&extent='+geoextent+layerstring;
    document.varform.zoomselected.value = '1';
    initSmokering();
    updateMap(mapurl, '');
}

/*
 * ZOOM TO FULL EXTENT
 **********************/
function zoomfullext() {
    showloading();
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomfull';
    updateMap(mapurl, '');
}

/*
 * GO BACK TO PEVIOUS EXTENT
 ******************************/
function goback() {
    showloading();
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomback';
    updateMap(mapurl, '');
}

/*
 * GO FORWARD
 ******************************/
function gofwd() {
    showloading();
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomfwd';
    updateMap(mapurl, '');
}


function clickStopLoading() {
    stoploading();
    if (document.all) { 
       document.execCommand('Stop')
    } else {
       window.stop();
    }
}



/*
 * PAN VIA ARROW BUTTONS OR KEYBOARD
 **************************************/
function arrowpan(direction) {
    showloading();
    var pansize = 0.1;   // defines how much to pan
    var px, py;
    if (direction == 'n') {
        px = (mapW - 1) / 2;
        py = (0 + pansize) * mapH;
    } else if (direction == 's') {
        px = (mapW - 1) / 2;
        py = (1 - pansize) * mapH;
    } else if (direction == 'e') {
        px = (1 - pansize) * mapW;
        py = (mapH - 1) / 2;
    } else if (direction == 'w') {
        px = (0 + pansize) * mapW;
        py = (mapH - 1) / 2;
    }
    
    zoompoint(1, px + "+" + py);
}


/*
 * REFERENCE IMAGE ZOOM/PAN
 ****************************/
function zoomref(imgxy) {
    showloading();
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=ref&imgxy='+imgxy  ;
    updateMap(mapurl, '');
}

// SET OVERVIEW IMAGE TO NEW ONE
function setRefImg(refimgsrc){
     var refimg = document.getElementById('refimg');
     refimg.src = refimgsrc;
}


/*
 * ZOOM TO SCALE
 *****************/
function zoom2scale(scale) {
    showloading();
    var mapurl = 'load.php?'+SID+'&mode=map&zoom_type=zoomscale&scale='+scale;
    updateMap(mapurl, '');
}

/*
 * WRITE SCALE TO INPUT FIELD AFTER MAP REFRESH
 *************************************************/
function writescale(scale) {
    //if (window.parent.document.scaleform) {
    //    window.parent.document.scaleform.scale.value = scale;
    //}
    document.scaleform.scale.value = scale;
}


/****************************************************************************
 * CHANGE LAYERS
 *****************/
function setlayers() {
    showloading();

    var layerstring = '&groups=' + getLayers();
    var mapurl = 'load.php?'+SID+'&zoom_type=zoompoint'+ layerstring;
    updateMap(mapurl, '');
    
    // Refresh Selection menu when active
    if (document.varform.mode.value == 'nquery') {
        //var selurl = 'select.php?'+ SID + getLayers() + '&activegroup=' + getSelectLayer() ;
        var selurl = 'select.php?'+SID;
        updateSelectTool(selurl, '');
    }
}

/*
 * RETURN LAYERS/GROUPS
 ************************/
function getLayers() {
    var layerstring = '';
   // alert(document.layerform.groups);
    for (var i=0; i<document.layerform.groups.length; i++) {
           if (document.layerform.groups[i].checked == true) {
                  layerstring += document.layerform.groups[i].value+',';
        }
    }
    layerstring = layerstring.substr(0, layerstring.length - 1);
    return layerstring;
}



/*****************************************************************************
 * QUERY RESULT
 ***************/
function showqueryresult(type, xy) {
    //var layerstring = getLayers();
    if (type == 'query') {
        var queryurl = 'info.phtml?'+SID+'&mode='+type+'&imgxy='+xy; // + layerstring;
    } else {
        var queryurl = 'info.phtml?'+SID+'&mode='+type+'&imgxy='+xy + '&groups=' + getSelectLayer();
        document.varform.zoomselected.value = '1';
    }
    //if (n > 0) {showloading()} ;

    if (infoWin == "frame") {
        // FOR LOADING INTO FRAME
        document.getElementById('infoFrame').style.visibility = 'visible';
        frames.infoFrame.location.href = queryurl;
    } else {
        // FOR OPENING NEW WINDOW
        openResultwin(queryurl);
    }
}



/*
 * RETURN LAYER/GROUP FOR SELECTION
 *************************************/
function getSelectLayer() {
    var sellayer = document.selform.selgroup.options[document.selform.selgroup.selectedIndex].value;
    var layerstring = "&groups=" + sellayer;

    return sellayer;
}




/*****************************************************************************
 * MOUSE CLICK BUTTON FUNCTIONS (FOR TOOLBAR)
 **********************************************/
function domouseclick(button) {
    if (button == 'zoomin') {
        resetFrames();
        document.varform.mode.value = 'map';
        document.varform.zoom_type.value = 'zoomrect';
        document.varform.maction.value = 'box';
        document.varform.tool.value = 'zoomin';
    } else if (button == 'zoomout') {
        resetFrames();
        document.varform.mode.value = 'map';
        document.varform.zoom_type.value = 'zoompoint';
        document.varform.zoom_factor.value = '-2';
        document.varform.maction.value = 'click';
        document.varform.tool.value = 'zoomout';
    } else if (button == 'identify') {
        resetFrames();
        document.varform.mode.value = 'query';
        document.varform.maction.value = 'click';
        document.varform.tool.value = 'identify';
    } else if (button == 'pan') {
        resetFrames();
        document.varform.mode.value = 'map';
        document.varform.zoom_type.value = 'zoompoint';
        document.varform.zoom_factor.value = '1';
        document.varform.maction.value = 'pan';
        document.varform.tool.value = 'pan';
    } else if (button == 'select') {
        resetFrames();
        document.varform.mode.value = 'nquery';
        document.varform.maction.value = 'box';
        var selurl = 'select.php?'+SID;
        updateSelectTool(selurl, '');
        //document.getElementById('loadFrame').src = selurl;
        document.varform.tool.value = 'select';
    } else if (button == 'measure') {
        document.varform.maction.value = 'measure';
        //var measureurl = 'measure.phtml?'+SID;
        document.varform.tool.value = 'measure';
        createMeasureInput();
    } else if (button == 'digitize') {
        document.varform.mode.value = 'digitize';
        document.varform.maction.value = 'click';
        document.varform.tool.value = 'digitize';
    } else if (button == 'coords') {
        document.varform.mode.value = 'coords';
        document.varform.maction.value = 'click';
        document.varform.tool.value = 'coords';
    } else if (button == 'supprimer') {
        resetFrames();
        document.varform.mode.value = 'supprimer';
        document.varform.maction.value = 'supprimer';
        document.varform.tool.value = 'supprimer';
    }
    // Set cursor appropritae to slected tool 
    if (useCustomCursor) {
        setCursor(false);
    }
}




function resetFrames() {
    if (document.varform.mode.value == 'nquery' || document.varform.maction.value == 'measure') {
        if (document.varform.maction.value == 'measure') jg.clear();
        document.getElementById('bottomMapFrameMeasure').innerHTML = '';
    }
}



function createMeasureInput() {
    //alert(localeList['Total']);

/*    var mStr =  '<form name="measureForm"><table class="TOOLFRAME"><tr><td NOWRAP>' + localeList['Total'] + '</td><td><input type=hidden size=9 name="sumLen"></td>';
        mStr += '<td id="mSegTxt" value="&nbsp;&nbsp;' + localeList['Segment'] + '" NOWRAP>&nbsp;&nbsp;' + localeList['Segment'] + '</td><td><input type=text size=9 name="segLen"></td>';
        mStr += '<td width=130 class="TDAR"><input type="button" value="' + localeList['Clear'];
        mStr += '"  class="button_off"  onClick="javascript:resetMeasure()" onmouseover="changeButtonClr(this, \'over\')" onmouseout="changeButtonClr (this, \'out\')" ></td>';
        mStr += '</tr></table></form>';    */
        var mStr =  '<form name="measureForm"><table class="TOOLFRAME"><tr><td NOWRAP></td><td><input type=hidden size=9 name="sumLen"></td>';
        mStr += '<td id="mSegTxt" value="" NOWRAP></td><td><input type=hidden size=9 name="segLen"></td>';
        mStr += '</tr></table></form>';

    document.getElementById('bottomMapFrameMeasure').innerHTML = mStr;

    clickCount = 0;
}



/*****************************************************************************
 * RELOAD APPLICATION
 **********************/
function reloadMap() {
    //document.varform.zoomselected.value = '0';

    document.getElementById('liste').innerHTML = '<center>aucun objet sélectionné</center>';

    if (document.varform.tool.value == 'measure')
    {
       resetMeasure();
    }
    resizeDiv(false);
//    var mapurl = 'load.php?'+SID+'&zoom_type=zoompoint&resultlayer=remove';
//    updateMap(mapurl, '');
}


/*****************************************************************************
 * CLOSE INFO WIN AND UNREGISTER SESSION VAR 'resultlayer'
 **********************************************************/
function clearInfo() {
    //if (infoWin == "frame") frames.infoFrame.location.href = "blank.html";
    this.location = "blank.html";
    if (window.parent.document.varform.zoomselected.value == '1') {
        window.parent.document.varform.zoomselected.value = '0';
        window.parent.reloadMap();
    }
}


function drawRectScale(scale) {

  //ratio = top.currScale/scale;
  ratio = document.scaleform.scale.value/scale;
  w = mapW;
  h = mapH;
  //alert(scale + ',' + ratio);
  dw = w / ratio;
  dh = h / ratio;
 // alert(x+','+','+y+','+dw+','+dh);
  x = (w - dw) / 2;
  y = (h - dh) / 2;
  var theZoomBox = document.getElementById('zoombox');


  
  if (x > 0) {
    theZoomBox.style.left   = x;
    theZoomBox.style.top    = y;
    theZoomBox.style.width  = dw;
    theZoomBox.style.height = dh;
    theZoomBox.style.visibility = "visible";
  }
  else {
    theZoomBox.style.visibility = "hidden";
  }
}

function clearRectScale() {
  var theZoomBox = document.getElementById('zoombox');
  theZoomBox.style.visibility = "hidden";
}

/*****************************************************************************
 * SHOW/HIDE LOADING SPLASH IMAGE
 *********************************/
function showloading(){    // waiting/working gif-animation
    var loadLayer = document.getElementById("loading")
    if (!loadLayer) {
        loadLayer = window.parent.document.getElementById("loading");
    } 
    loadLayer.style.visibility = "visible";
}

function stoploading(){
    var loadLayer = document.getElementById("loading")
    if (!loadLayer) {
        loadLayer = window.parent.document.getElementById("loading");
    } 
    loadLayer.style.visibility = "hidden";
}




/******************************************************************************
 * SET SLIDER IMAGE DEPENDING ON SCALE
 * Values defined in 'config.ini'
 *************************************/
 /*
function setSlider(curscale) {
    if (window.parent.myslider) {
        var sliderPos = getSliderPosition(curscale);
        window.parent.myslider.setPosition(sliderPos);
        window.parent.document.getElementById('refsliderbox').style.visibility = "hidden";
    }
    return false;
}  */

 /******************************************************************************
 * SET SLIDER IMAGE DEPENDING ON SCALE
 * Values defined in 'config.ini'
 *************************************/

function setSlider(curscale){

    var gSlide = top.gSlide;
    var simg;
    var arrend = gSlide.length-1;

    for (var i=0;i<=arrend;i++){

       // MAXSCALE
       if (i == 0) {
           var maxsc = 10 * gSlide[i];
       } else {
           var maxsc = gSlide[i] + ((gSlide[(i-1)] - gSlide[i]) / 2);
       }
       // MINSCALE
       if (i < arrend) {
           var minsc = gSlide[i] - ((gSlide[i] - gSlide[(i+1)]) / 2)
       } else {
           var minsc = 1;
       }

       var sln = gSlide[i];

       simg = document.images["slbut" + sln];

       if (simg) {
           if (curscale >= minsc && curscale < maxsc){
              simg.src =  "images/slider/"+i+"_sl_on.gif";
           }else{
              simg.src =  "images/slider/"+i+"_sl_off.gif";
           }
       }
    }
   /* if (window.parent.myslider) {
        var sliderPos = getSliderPosition(curscale);
        window.parent.myslider.setPosition(sliderPos);
        window.parent.document.getElementById('refsliderbox').style.visibility = "hidden";
    }
    return false;*/
}