User:Bouvierjr/vector.js

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/*
 * table of content drag and drop
 */
var dx = 0, dy = 0;
var drag = function ( e ) {
    e.dataTransfer.setData ( "Text", e.target.id );
    dx = e.target.offsetLeft - e.x;
    dy = e.target.offsetTop - e.y;
}
var allowDrop = function ( e ) {
    e.preventDefault ();
}
var drop = function ( e ) {
    e.preventDefault ();
    var id = e.dataTransfer.getData ( "Text" );
    var dropped = document.getElementById ( id );
    dropped.style.cssText = "position:fixed;left:"
    + (e.x + dx) + "px;top:" + (e.y + dy) + "px;width:15em;"
    + "border:1px solid #ccc;margin:0px!important;"
    + "border-top: 1px solid #ccc!important;"
    + "z-index:2;box-shadow:rgba(80, 80, 80, 0.5) 0px 2px 4px;"
    + "background-color:rgba(240, 240, 240, 0.80);";
}
var page = document.getElementById ( "content" );
if ( page ) {
    page.setAttribute ( "ondragover", "allowDrop(event);" );
    page.setAttribute ( "ondrop", "drop(event);" );
}
var toc = document.getElementById ( "toc" );
if ( toc ) {
    toc.setAttribute ( "draggable", "true" );
    toc.setAttribute ( "ondragstart", "drag(event);" )
}