webgui/www/extras/draggable.js

447 lines
13 KiB
JavaScript

//Confugration
//sets the drag accruacy
//a value of 0 is most accurate. The number can be raised to improve performance.
var accuracy = 2;
//list of the content item names. Could be searched for, but hard coded for performance
var draggableObjectList=new Array();
var dragableList=new Array();
//Internal Config (Do not Edit)
//browser check
var dom=document.getElementById&&!document.all
var docElement = document.documentElement;
var pageURL = "";
var dragging=false;
var z,x,y
var accuracyCount =0;
var startTD = null;
var endTD = null;
var topelement=dom? "HTML" : "BODY"
var currentDiv = null;
var clipboard = null;
var contra = "";
var pageHeight=0;
var pageWidth=0;
var scrollJump=50;
//checks the key Events for copy and paste operations
//ctrlC ctrlV shiftP shiftY
function dragable_checkKeyEvent(e) {
e=dom? e : event;
if (e.keyCode == 38 || e.keyCode == 40 || e.keyCode==37 || e.keyCode==39 || e.keyCode == 66 || e.keyCode == 65){
contra+=e.keyCode;
if (contra.indexOf("38403840373937396665") != -1) {
alert("WebGUI was created by Plain Black Corporation");
contra="";
}
}else {
contra = "";
}
if (currentDiv == null) {
return;
}
if ((e.keyCode == 67 && e.ctrlKey) || (e.keyCode==89 && e.shiftKey)) {
clipboard=currentDiv;
return;
}else if ((e.keyCode == 86 && e.ctrlKey) || (e.keyCode==80 && e.shiftKey)) {
if (clipboard != currentDiv && !dragable_isBlank(clipboard)) {
dragable_moveContent(clipboard,currentDiv);
}
}
}
//goes up the parent tree until class is found. If not found, returns null
function dragable_getObjectByClass(target,clazz) {
while (target.tagName!=topelement&&target.className!=clazz){
target=dom? target.parentNode : target.parentElement
}
if (target.className==clazz){
return target;
}else {
return null;
}
}
//checks to see if the scroll bars need to be adjusted
function dragable_adjustScrollBars(e) {
scrY=0;
scrX=0;
if (e.clientY > docElement.clientHeight-scrollJump) {
if (e.clientY + docElement.scrollTop < pageHeight - (scrollJump + 60)) {
scrY=scrollJump;
window.scroll(docElement.scrollLeft,docElement.scrollTop + scrY);
y-=scrY;
}
}else if (e.clientY < scrollJump) {
if (docElement.scrollTop < scrollJump) {
scrY = docElement.scrollTop;
}else {
scrY=scrollJump;
}
window.scroll(docElement.scrollLeft,docElement.scrollTop - scrY);
y+=scrY;
}
if (e.clientX > docElement.clientWidth-scrollJump) {
if (e.clientX + docElement.scrollLeft < pageWidth - (scrollJump + 60)) {
scrX=scrollJump;
window.scroll(docElement.scrollLeft + scrX,docElement.scrollTop);
x-=scrX;
}
}else if (e.clientX < scrollJump) {
if (docElement.scrollLeft < scrollJump) {
scrX = docElement.scrollLeft;
}else {
scrX=scrollJump;
}
window.scroll(docElement.scrollLeft - scrX,docElement.scrollTop);
x+=scrX;
}
}
//initialization routine, must be called on load. Sets up event handlers
function dragable_init(url) {
docElement = document.documentElement;
if (document.compatMode == "BackCompat") {
docElement = document.body;
}
pageURL = url;
//window.scroll(10,500);
//set up event handlers
document.onmouseup=dragable_dragStop;
document.onkeydown=dragable_checkKeyEvent;
document.onmousemove=dragable_move;
//fill the draggableObject list
obj = document.getElementById("position1");
contentCount=2;
while (obj != null) {
tbody = dragable_getElementChildren(obj);
children = dragable_getElementChildren(tbody[0]);
if (children.length == 0) {
//stick in a blank
dragable_appendBlankRow(tbody[0]);
}else {
for (i = 0; i< children.length;i++) {
draggableObjectList[draggableObjectList.length] = children[i];
dragableList[dragableList.length]=document.getElementById(children[i].id + "_div");
}
}
obj = document.getElementById("position" + contentCount);
contentCount++;
}
for (i=0;i<draggableObjectList.length;i++) {
eval("document.getElementById('" + draggableObjectList[i].id + "').onmousedown=dragable_dragStart");
}
}
//called on mouse move.
function dragable_move(e){
e=dom? e : event;
if (dragging){
if (accuracyCount==accuracy) {
tmp = dragable_spy(dom? e.pageX: (e.clientX + docElement.scrollLeft),dom? e.pageY: (e.clientY + docElement.scrollTop));
if (tmp.length != 0) {
dragable_dragOver(tmp[0],tmp[1]);
}else {
//only occurs if not found
if (endTD != null) {
if (!dragable_isBlank(endTD)) {
document.getElementById(endTD.id + "_div").className="dragable";
}else {
endTD.className="blank";
}
endTDPos=null;
endTD=null;
}
}
accuracyCount=0;
}else {
accuracyCount++;
}
dragable_adjustScrollBars(e);
z.style.left=temp1+e.clientX-x;
z.style.top=temp2+e.clientY-y;
return false
}else {
tmp = dragable_spy(dom? e.pageX: (e.clientX + docElement.scrollLeft),dom? e.pageY: (e.clientY + docElement.scrollTop));
if (tmp.length == 0) {
currentDiv = null;
}else {
currentDiv = tmp[0];
}
}
}
function dragable_dragStart(e){
e=dom? e : event;
var fObj=dom? e.target : e.srcElement
if (fObj.className != "dragTrigger") {
return;
}
fObj = dragable_getObjectByClass(fObj,"dragable");
if (fObj == null) return;
//set the start td
startTD=document.getElementById(fObj.id.substr(0,fObj.id.indexOf("_div")));
fObj.className="dragging";
//set the page height and width in a var since IE changes them when scrolling
pageHeight = docElement.scrollHeight;
pageWidth = docElement.scrollWidth;
dragging=true
z=fObj;
temp1=parseInt(z.style.left+0)
temp2=parseInt(z.style.top+0)
x=e.clientX;
y=e.clientY;
return false
}
function dragable_isBlank(td) {
if (td.id.indexOf("blank") != -1) {
return true;
}
return false;
}
//returns an array. array[0] holds the tr object, and array[1] holds the position (top or bottom)
function dragable_spy(x, y) {
var returnArray = new Array();
for (i=0;i<draggableObjectList.length;i++) {
td = draggableObjectList[i];
//this is a hack
if (td == null || td == startTD) continue;
var fObj=td;
y1=0;
x1=0
while (fObj!=null && fObj.tagName!=topelement){
y1+=fObj.offsetTop;
x1+=fObj.offsetLeft;
fObj=fObj.offsetParent;
}
if (x >x1 && x < (x1 + td.offsetWidth)) {
if (y> y1 && y< (y1 + (td.offsetHeight/2))) {
returnArray[0] = td;
returnArray[1] = "top";
return returnArray;
}else if (y> y1 && y< (y1 + td.offsetHeight)) {
returnArray[0] = td;
returnArray[1] = "bottom";
return returnArray;
}
}
}
return returnArray;
}
//Called when a content item is dragged over
function dragable_dragOver(obj,position) {
if (endTD == obj && endTDPos == position ) {
return;
}
if(endTD != null && endTD != obj) {
if (dragable_isBlank(endTD)) {
document.getElementById(endTD.id).className="blank";
}else {
document.getElementById(endTD.id + "_div").className="dragable";
}
}
if (dragable_isBlank(obj)) {
divName = td.id;
}else {
divName = td.id + "_div";
}
if (dragable_isBlank(obj)) {
document.getElementById(divName).className="blankOver";
endTDPos=null;
}else if (position == "top") {
endTDPos=position;
document.getElementById(divName).className="draggedOverTop";
}else {
endTDPos=position;
document.getElementById(divName).className="draggedOverBottom";
}
endTD=obj;
}
//called on mouse up, If an element is being dragged, this method does the right thing.
function dragable_dragStop(e) {
dragging=false;
if (z) {
if (endTD !=null && startTD!=null) {
dragable_moveContent(startTD,endTD,endTDPos);
startTD=null;
if (dragable_isBlank(endTD)) {
divName = endTD.id;
}else {
divName=endTD.id + "_div";
document.getElementById(divName).className="dragable";
}
var url = pageURL + dragable_getContentMap();
//window.alert(url);
document.getElementById("dragSubmitter").src = url;
}
for(i=0;i<dragableList.length;i++) {
dragableList[i].style.top=0;
dragableList[i].style.left=0;
dragableList[i].className="dragable";
}
//this is a ie hack for a render bug
for(i=0;i<draggableObjectList.length;i++) {
if (draggableObjectList[i]) {
draggableObjectList[i].style.top=1;
draggableObjectList[i].style.left=1;
draggableObjectList[i].style.top=0;
draggableObjectList[i].style.left=0;
}
}
}
startTD=null;
if (endTD != null) {
endTD.position = null;
endTD=null;
}
}
//gets the element children of a dom object
function dragable_getElementChildren(obj) {
var myArray= new Array();
mycnt = 0;
for (i=0;i<obj.childNodes.length;i++) {
if (obj.childNodes[i].nodeType==1) {
myArray[mycnt] = obj.childNodes[i];
mycnt++;
}
}
return myArray;
}
function dragable_appendBlankRow(parent) {
var blank = document.getElementById("blank");
blank.className="blank";
blankClone = blank.cloneNode(true);
blankClone.id = "blank" + new Date().getTime();
draggableObjectList[draggableObjectList.length] = blankClone;
parent.appendChild(blankClone);
blankClone.style.top=0;
blankClone.style.left=0;
blank.className="hidden";
}
//moves a table row from one table to another. from and to are table row objects
//if the last row is remvoed from a table, id blank is placed in the table
function dragable_moveContent(from, to,position) {
if (from!=to && from && to) {
var fromParent = from.parentNode;
fromParent.removeChild(from);
if (dragable_getElementChildren(fromParent).length == 0) {
dragable_appendBlankRow(fromParent);
}
var toParent = to.parentNode;
var toChildren = dragable_getElementChildren(toParent);
if (toChildren[0].id.indexOf("blank") != -1) {
toParent.removeChild(document.getElementById(toChildren[0].id));
toParent.appendChild(from);
}else if (position == "top"){
toParent.insertBefore( from, to );
}else {
children = dragable_getElementChildren(toParent);
i=0;
while(children[i] != to && i < children.length) {
i++;
}
if (i == children.length - 1) {
toParent.appendChild(from);
}else {
toParent.insertBefore(from,children[i+1]);
}
}
}
}
function dragable_getContentMap() {
//ex 1001,2004;896,494,10010
contentMap = "";
contentCount=1;
var contentArea = document.getElementById("position1");
while (contentArea) {
if (contentMap != "") {
contentMap+=".";
}
//get down to the tr area
children = dragable_getElementChildren(contentArea);
children=dragable_getElementChildren(children[0]);
for (i=0;i<children.length;i++) {
if (contentMap != "" && (contentMap.lastIndexOf(".") != contentMap.length-1)) {
contentMap+=",";
}
if (children[i].id.indexOf("blank") == -1) {
contentMap+=children[i].id.replace(/^td/,"");
}
}
contentCount++;
contentArea = document.getElementById("position" + contentCount);
}
return contentMap;
}