114 lines
3.1 KiB
JavaScript
114 lines
3.1 KiB
JavaScript
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if(!dojo._hasResource["dojox.grid._grid.drag"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojox.grid._grid.drag"] = true;
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dojo.provide("dojox.grid._grid.drag");
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// summary:
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// utility functions for dragging as used in grid.
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// begin closure
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(function(){
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var dgdrag = dojox.grid.drag = {};
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dgdrag.dragging = false;
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dgdrag.hysteresis = 2;
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dgdrag.capture = function(inElement) {
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//console.debug('dojox.grid.drag.capture');
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if (inElement.setCapture)
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inElement.setCapture();
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else {
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document.addEventListener("mousemove", inElement.onmousemove, true);
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document.addEventListener("mouseup", inElement.onmouseup, true);
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document.addEventListener("click", inElement.onclick, true);
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}
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}
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dgdrag.release = function(inElement) {
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//console.debug('dojox.grid.drag.release');
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if(inElement.releaseCapture){
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inElement.releaseCapture();
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}else{
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document.removeEventListener("click", inElement.onclick, true);
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document.removeEventListener("mouseup", inElement.onmouseup, true);
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document.removeEventListener("mousemove", inElement.onmousemove, true);
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}
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}
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dgdrag.start = function(inElement, inOnDrag, inOnEnd, inEvent, inOnStart){
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if(/*dgdrag.elt ||*/ !inElement || dgdrag.dragging){
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console.debug('failed to start drag: bad input node or already dragging');
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return;
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}
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dgdrag.dragging = true;
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dgdrag.elt = inElement;
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dgdrag.events = {
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drag: inOnDrag || dojox.grid.nop,
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end: inOnEnd || dojox.grid.nop,
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start: inOnStart || dojox.grid.nop,
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oldmove: inElement.onmousemove,
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oldup: inElement.onmouseup,
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oldclick: inElement.onclick
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};
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dgdrag.positionX = (inEvent && ('screenX' in inEvent) ? inEvent.screenX : false);
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dgdrag.positionY = (inEvent && ('screenY' in inEvent) ? inEvent.screenY : false);
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dgdrag.started = (dgdrag.position === false);
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inElement.onmousemove = dgdrag.mousemove;
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inElement.onmouseup = dgdrag.mouseup;
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inElement.onclick = dgdrag.click;
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dgdrag.capture(dgdrag.elt);
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}
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dgdrag.end = function(){
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//console.debug("dojox.grid.drag.end");
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dgdrag.release(dgdrag.elt);
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dgdrag.elt.onmousemove = dgdrag.events.oldmove;
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dgdrag.elt.onmouseup = dgdrag.events.oldup;
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dgdrag.elt.onclick = dgdrag.events.oldclick;
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dgdrag.elt = null;
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try{
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if(dgdrag.started){
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dgdrag.events.end();
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}
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}finally{
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dgdrag.dragging = false;
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}
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}
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dgdrag.calcDelta = function(inEvent){
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inEvent.deltaX = inEvent.screenX - dgdrag.positionX;
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inEvent.deltaY = inEvent.screenY - dgdrag.positionY;
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}
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dgdrag.hasMoved = function(inEvent){
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return Math.abs(inEvent.deltaX) + Math.abs(inEvent.deltaY) > dgdrag.hysteresis;
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}
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dgdrag.mousemove = function(inEvent){
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inEvent = dojo.fixEvent(inEvent);
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dojo.stopEvent(inEvent);
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dgdrag.calcDelta(inEvent);
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if((!dgdrag.started)&&(dgdrag.hasMoved(inEvent))){
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dgdrag.events.start(inEvent);
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dgdrag.started = true;
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}
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if(dgdrag.started){
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dgdrag.events.drag(inEvent);
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}
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}
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dgdrag.mouseup = function(inEvent){
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//console.debug("dojox.grid.drag.mouseup");
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dojo.stopEvent(dojo.fixEvent(inEvent));
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dgdrag.end();
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}
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dgdrag.click = function(inEvent){
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dojo.stopEvent(dojo.fixEvent(inEvent));
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//dgdrag.end();
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}
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})();
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// end closure
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}
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