/*! - * Ext JS Library 3.0.3 - * Copyright(c) 2006-2009 Ext JS, LLC + * Ext JS Library 3.2.1 + * Copyright(c) 2006-2010 Ext JS, Inc. * licensing@extjs.com * http://www.extjs.com/license */ -/** - * @class Ext.dd.ScrollManager - *+/** + * @class Ext.dd.ScrollManager + *Provides automatic scrolling of overflow regions in the page during drag operations.
- *The ScrollManager configs will be used as the defaults for any scroll container registered with it, - * but you can also override most of the configs per scroll container by adding a - * ddScrollConfig object to the target element that contains these properties: {@link #hthresh}, - * {@link #vthresh}, {@link #increment} and {@link #frequency}. Example usage: - *
- * Note: This class uses "Point Mode" and is untested in "Intersect Mode". - * @singleton - */ -Ext.dd.ScrollManager = function(){ - var ddm = Ext.dd.DragDropMgr; - var els = {}; - var dragEl = null; - var proc = {}; - - var onStop = function(e){ - dragEl = null; - clearProc(); - }; - - var triggerRefresh = function(){ - if(ddm.dragCurrent){ - ddm.refreshCache(ddm.dragCurrent.groups); - } - }; - - var doScroll = function(){ - if(ddm.dragCurrent){ - var dds = Ext.dd.ScrollManager; - var inc = proc.el.ddScrollConfig ? - proc.el.ddScrollConfig.increment : dds.increment; - if(!dds.animate){ - if(proc.el.scroll(proc.dir, inc)){ - triggerRefresh(); - } - }else{ - proc.el.scroll(proc.dir, inc, true, dds.animDuration, triggerRefresh); - } - } - }; - - var clearProc = function(){ - if(proc.id){ - clearInterval(proc.id); - } - proc.id = 0; - proc.el = null; - proc.dir = ""; - }; - - var startProc = function(el, dir){ - clearProc(); - proc.el = el; - proc.dir = dir; - var freq = (el.ddScrollConfig && el.ddScrollConfig.frequency) ? - el.ddScrollConfig.frequency : Ext.dd.ScrollManager.frequency; - proc.id = setInterval(doScroll, freq); - }; - - var onFire = function(e, isDrop){ - if(isDrop || !ddm.dragCurrent){ return; } - var dds = Ext.dd.ScrollManager; - if(!dragEl || dragEl != ddm.dragCurrent){ - dragEl = ddm.dragCurrent; - // refresh regions on drag start - dds.refreshCache(); - } - - var xy = Ext.lib.Event.getXY(e); - var pt = new Ext.lib.Point(xy[0], xy[1]); - for(var id in els){ - var el = els[id], r = el._region; - var c = el.ddScrollConfig ? el.ddScrollConfig : dds; - if(r && r.contains(pt) && el.isScrollable()){ - if(r.bottom - pt.y <= c.vthresh){ - if(proc.el != el){ - startProc(el, "down"); - } - return; - }else if(r.right - pt.x <= c.hthresh){ - if(proc.el != el){ - startProc(el, "left"); - } - return; - }else if(pt.y - r.top <= c.vthresh){ - if(proc.el != el){ - startProc(el, "up"); - } - return; - }else if(pt.x - r.left <= c.hthresh){ - if(proc.el != el){ - startProc(el, "right"); - } - return; - } - } - } - clearProc(); - }; - - ddm.fireEvents = ddm.fireEvents.createSequence(onFire, ddm); - ddm.stopDrag = ddm.stopDrag.createSequence(onStop, ddm); - - return { - /** - * Registers new overflow element(s) to auto scroll - * @param {Mixed/Array} el The id of or the element to be scrolled or an array of either - */ - register : function(el){ - if(Ext.isArray(el)){ - for(var i = 0, len = el.length; i < len; i++) { - this.register(el[i]); - } - }else{ - el = Ext.get(el); - els[el.id] = el; - } - }, - - /** - * Unregisters overflow element(s) so they are no longer scrolled - * @param {Mixed/Array} el The id of or the element to be removed or an array of either - */ - unregister : function(el){ - if(Ext.isArray(el)){ - for(var i = 0, len = el.length; i < len; i++) { - this.unregister(el[i]); - } - }else{ - el = Ext.get(el); - delete els[el.id]; - } - }, - - /** - * The number of pixels from the top or bottom edge of a container the pointer needs to be to - * trigger scrolling (defaults to 25) - * @type Number - */ - vthresh : 25, - /** - * The number of pixels from the right or left edge of a container the pointer needs to be to - * trigger scrolling (defaults to 25) - * @type Number - */ - hthresh : 25, - - /** - * The number of pixels to scroll in each scroll increment (defaults to 50) - * @type Number - */ - increment : 100, - - /** - * The frequency of scrolls in milliseconds (defaults to 500) - * @type Number - */ - frequency : 500, - - /** - * True to animate the scroll (defaults to true) - * @type Boolean - */ - animate: true, - - /** - * The animation duration in seconds - - * MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4) - * @type Number - */ - animDuration: .4, - - /** - * Manually trigger a cache refresh. - */ - refreshCache : function(){ - for(var id in els){ - if(typeof els[id] == 'object'){ // for people extending the object prototype - els[id]._region = els[id].getRegion(); - } - } - } - }; -}();-var el = Ext.get('scroll-ct'); -el.ddScrollConfig = { - vthresh: 50, - hthresh: -1, - frequency: 100, - increment: 200 -}; -Ext.dd.ScrollManager.register(el); -
Provides automatic scrolling of overflow regions in the page during drag operations.
+ *The ScrollManager configs will be used as the defaults for any scroll container registered with it, + * but you can also override most of the configs per scroll container by adding a + * ddScrollConfig object to the target element that contains these properties: {@link #hthresh}, + * {@link #vthresh}, {@link #increment} and {@link #frequency}. Example usage: + *
+var el = Ext.get('scroll-ct');
+el.ddScrollConfig = {
+ vthresh: 50,
+ hthresh: -1,
+ frequency: 100,
+ increment: 200
+};
+Ext.dd.ScrollManager.register(el);
+