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//\/////
//\  overLIB Draggable Plugin
//\
//\  You may not remove or change this notice.
//\  Copyright Erik Bosrup 1998-2003. All rights reserved.
//\  Contributors are listed on the homepage.
//\  See http://www.bosrup.com/web/overlib/ for details.
//\/////
////////
// PRE-INIT
// Ignore these lines, configuration is below.
////////
if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.14)) alert('overLIB 4.14 or later is required for the Draggable Plugin.');
else {
registerCommands('draggable,altcut,dragimg');
////////
// DEFAULT CONFIGURATION
// Settings you want everywhere are set here. All of this can also be
// changed on your html page or through an overLIB call.
////////
if (typeof ol_draggable=='undefined') var ol_draggable=0;
if (typeof ol_altcut=='undefined') var ol_altcut=0;
if (typeof ol_dragimg=='undefined') var ol_dragimg='';
////////
// END OF CONFIGURATION
// Don't change anything below this line, all configuration is above.
////////
////////
// INIT
////////
// Runtime variables init. Don't change for config!
var o3_draggable=0;
var o3_altcut=0;
var o3_dragimg='';
var olImgLeft,olImgTop;
var olImgObj;
var olMseMv;  // hold old mouseMove routine
////////
// PLUGIN FUNCTIONS
////////
function setDragVariables() {
        o3_draggable=ol_draggable;
        o3_altcut=ol_altcut;
        o3_dragimg=ol_dragimg;
        olImgObj=null;
}
// Parses Draggable commands
function parseDragExtras(pf,i,ar) {
        var k=i;
        if (k < ar.length) {
                if (ar[k]==DRAGGABLE) { eval(pf+'draggable=('+pf+'draggable==0) ? 1 : 0'); return k; }
                if (ar[k]==ALTCUT) { eval(pf+'altcut=('+pf+'altcut==0) ? 1 : 0'); return k; }
                if (ar[k]==DRAGIMG) { eval(pf+'dragimg="'+ar[++k]+'"'); return k; }
        }
        return -1;
}
//////
//  PRESHOW PROCESSING FOR DRAGGABLE POPUPS
//////
function startDrag() {
 // Initiate dragging if in same frame and its a sticky
        if (o3_draggable) {
                if (o3_sticky&&(o3_frame==ol_frame)) initDrag();
                else o3_draggable=0;
        }
}
//////
//  POSTHIDE PROCESSING FOR DRAGGABLE POPUPS
//////
function stopDrag() {
        if (o3_draggable) endDrag();
}
//////
// DRAGGABLE FUNCTIONS
//////
function initDrag() {
        olMseMv=capExtent.onmousemove;
        if(olNs4) {
                document.captureEvents(Event.MOUSEDOWN | Event.CLICK);
                document.onmousedown=grabEl;
                document.onclick=function(e) {return routeEvent(e);}
        } else {
                over.onmousedown=grabEl;
        }
        if (o3_dragimg) chkForImgSupport(o3_dragimg);
        return true;
}
// Checks for image for dragging
function chkForImgSupport(dragImg) {
        if (dragImg) {
                if (typeof getAnchorObjRef!='undefined') olImgObj=getAnchorObjRef(dragImg);
                if (olImgObj==null) o3_dragimg='';
        }
}
// Sets cursor symbol
function setCursor(on) {
        if (olNs4) return;
        over.style.cursor=(on ? 'move' : 'auto');
}
// Checks cursor position relative to image
function chkCursorPosition(Obj,XPos,YPos) {
        if (Obj) {
                o3_anchorx=o3_anchory=0;
                o3_anchoralign='UL';
                getAnchorLocation(Obj);
                if (XPos < olImgLeft||XPos > (olImgLeft+Obj.width)||YPos < olImgTop||YPos > (olImgTop+Obj.height)) return false;
        }
        return true;
}
// Sets up mouse grab for moving
function grabEl(e) {
        var e=(e) ? e : event;
        var X,Y;
        var cKy=(olNs4 ? e.modifiers & Event.ALT_MASK : (!olOp ? e.altKey : e.ctrlKey));
        if ((o3_altcut ? !cKy : cKy)) {
                //   get mouse's current x,y location
                X=(e.pageX || eval('e.clientX+o3_frame.'+docRoot+'.scrollLeft'));
                Y=(e.pageY || eval('e.clientY+o3_frame.'+docRoot+'.scrollTop'));
          if (chkCursorPosition(olImgObj,X,Y)) {
                        if (olNs4) document.captureEvents(Event.MOUSEUP);
                        capExtent.onmousemove=moveEl;
                        document.onmouseup=function() {setCursor(0); if (olIe4) over.onselectstart=null; capExtent.onmousemove=olMseMv;}
                        setCursor(1);
                        if (olIe4) over.onselectstart=function() {return false;}
                        if (olNs4) {
                        cX=X
                        cY=Y
                        } else {
                        // get offsets from upper left hand corner of popup to keep popup from jummping
                        // when first starting to drag
                        cX=X-(olNs4 ? over.left : parseInt(over.style.left));
                        cY=Y-(olNs4 ? over.top : parseInt(over.style.top)); 
                        }
                        return (olNs4 ? routeEvent(e) : false);
          }
        } else setCursor(0);
}
// Moves popup to follow mouse
function moveEl(e) {
        var e=(e) ? e : event;
        var dX,dY,X,Y;
        //  get new mouse location
        X=(e.pageX || eval('e.clientX+o3_frame.'+docRoot+'.scrollLeft'));
        Y=(e.pageY || eval('e.clientY+o3_frame.'+docRoot+'.scrollTop'));
        if (chkCursorPosition(olImgObj,X,Y)){
                if (olNs4) {
                        dX=X-cX; cX=X;
                        dY=Y-cY; cY=Y;
                        over.moveBy(dX,dY);
                } else 
                        repositionTo(over,X-cX,Y-cY);  // move popup to that position
        }
}
// Cleanup for Drag end
function endDrag(obj) {
        if (olNs4) {
                document.releaseEvents(Event.MOUSEDOWN | Event.MOUSEUP | Event.CLICK);
                document.onmousedown=document.onclick=null;
        } else {
                if(!obj) obj=over;
                obj.onmousedown=null;
        }
        document.onmouseup= null;
}
////////
// PLUGIN REGISTRATIONS
////////
registerRunTimeFunction(setDragVariables);
registerCmdLineFunction(parseDragExtras);
registerHook("disp",startDrag,FBEFORE);
registerHook("hideObject",stopDrag,FAFTER);
if (olInfo.meets(4.14)) registerNoParameterCommands('draggable,altcut');
}
//end