if(!dojo._hasResource["dojo.dnd.TimedMoveable"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. dojo._hasResource["dojo.dnd.TimedMoveable"] = true; dojo.provide("dojo.dnd.TimedMoveable"); dojo.require("dojo.dnd.Moveable"); (function(){ // precalculate long expressions var oldOnMove = dojo.dnd.Moveable.prototype.onMove; dojo.declare("dojo.dnd.TimedMoveable", dojo.dnd.Moveable, { // summary: // A specialized version of Moveable to support an FPS throttling. // This class puts an upper restriction on FPS, which may reduce // the CPU load. The additional parameter "timeout" regulates // the delay before actually moving the moveable object. // object attributes (for markup) timeout: 40, // in ms, 40ms corresponds to 25 fps constructor: function(node, params){ // summary: an object, which makes a node moveable with a timer // node: Node: a node (or node's id) to be moved // params: Object: an optional object with additional parameters. // See dojo.dnd.Moveable for details on general parameters. // Following parameters are specific for this class: // timeout: Number: delay move by this number of ms // accumulating position changes during the timeout // sanitize parameters if(!params){ params = {}; } if(params.timeout && typeof params.timeout == "number" && params.timeout >= 0){ this.timeout = params.timeout; } }, // markup methods markupFactory: function(params, node){ return new dojo.dnd.TimedMoveable(node, params); }, onMoveStop: function(/* dojo.dnd.Mover */ mover){ if(mover._timer){ // stop timer clearTimeout(mover._timer) // reflect the last received position oldOnMove.call(this, mover, mover._leftTop) } dojo.dnd.Moveable.prototype.onMoveStop.apply(this, arguments); }, onMove: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){ mover._leftTop = leftTop; if(!mover._timer){ var _t = this; // to avoid using dojo.hitch() mover._timer = setTimeout(function(){ // we don't have any pending requests mover._timer = null; // reflect the last received position oldOnMove.call(_t, mover, mover._leftTop); }, this.timeout); } } }); })(); }