+++ /dev/null
-/*\r
- * Ext JS Library 2.2.1\r
- * Copyright(c) 2006-2009, Ext JS, LLC.\r
- * licensing@extjs.com\r
- * \r
- * http://extjs.com/license\r
- */\r
-\r
-/**\r
- * @class Ext.dd.ScrollManager\r
- * <p>Provides automatic scrolling of overflow regions in the page during drag operations.</p>\r
- * <p>The ScrollManager configs will be used as the defaults for any scroll container registered with it,\r
- * but you can also override most of the configs per scroll container by adding a \r
- * <tt>ddScrollConfig</tt> object to the target element that contains these properties: {@link #hthresh},\r
- * {@link #vthresh}, {@link #increment} and {@link #frequency}. Example usage:\r
- * <pre><code>\r
-var el = Ext.get('scroll-ct');\r
-el.ddScrollConfig = {\r
- vthresh: 50,\r
- hthresh: -1,\r
- frequency: 100,\r
- increment: 200\r
-};\r
-Ext.dd.ScrollManager.register(el);\r
-</code></pre>\r
- * <b>Note: This class uses "Point Mode" and is untested in "Intersect Mode".</b>\r
- * @singleton\r
- */\r
-Ext.dd.ScrollManager = function(){\r
- var ddm = Ext.dd.DragDropMgr;\r
- var els = {};\r
- var dragEl = null;\r
- var proc = {};\r
- \r
- var onStop = function(e){\r
- dragEl = null;\r
- clearProc();\r
- };\r
- \r
- var triggerRefresh = function(){\r
- if(ddm.dragCurrent){\r
- ddm.refreshCache(ddm.dragCurrent.groups);\r
- }\r
- };\r
- \r
- var doScroll = function(){\r
- if(ddm.dragCurrent){\r
- var dds = Ext.dd.ScrollManager;\r
- var inc = proc.el.ddScrollConfig ?\r
- proc.el.ddScrollConfig.increment : dds.increment;\r
- if(!dds.animate){\r
- if(proc.el.scroll(proc.dir, inc)){\r
- triggerRefresh();\r
- }\r
- }else{\r
- proc.el.scroll(proc.dir, inc, true, dds.animDuration, triggerRefresh);\r
- }\r
- }\r
- };\r
- \r
- var clearProc = function(){\r
- if(proc.id){\r
- clearInterval(proc.id);\r
- }\r
- proc.id = 0;\r
- proc.el = null;\r
- proc.dir = "";\r
- };\r
- \r
- var startProc = function(el, dir){\r
- clearProc();\r
- proc.el = el;\r
- proc.dir = dir;\r
- var freq = (el.ddScrollConfig && el.ddScrollConfig.frequency) ? \r
- el.ddScrollConfig.frequency : Ext.dd.ScrollManager.frequency;\r
- proc.id = setInterval(doScroll, freq);\r
- };\r
- \r
- var onFire = function(e, isDrop){\r
- if(isDrop || !ddm.dragCurrent){ return; }\r
- var dds = Ext.dd.ScrollManager;\r
- if(!dragEl || dragEl != ddm.dragCurrent){\r
- dragEl = ddm.dragCurrent;\r
- // refresh regions on drag start\r
- dds.refreshCache();\r
- }\r
- \r
- var xy = Ext.lib.Event.getXY(e);\r
- var pt = new Ext.lib.Point(xy[0], xy[1]);\r
- for(var id in els){\r
- var el = els[id], r = el._region;\r
- var c = el.ddScrollConfig ? el.ddScrollConfig : dds;\r
- if(r && r.contains(pt) && el.isScrollable()){\r
- if(r.bottom - pt.y <= c.vthresh){\r
- if(proc.el != el){\r
- startProc(el, "down");\r
- }\r
- return;\r
- }else if(r.right - pt.x <= c.hthresh){\r
- if(proc.el != el){\r
- startProc(el, "left");\r
- }\r
- return;\r
- }else if(pt.y - r.top <= c.vthresh){\r
- if(proc.el != el){\r
- startProc(el, "up");\r
- }\r
- return;\r
- }else if(pt.x - r.left <= c.hthresh){\r
- if(proc.el != el){\r
- startProc(el, "right");\r
- }\r
- return;\r
- }\r
- }\r
- }\r
- clearProc();\r
- };\r
- \r
- ddm.fireEvents = ddm.fireEvents.createSequence(onFire, ddm);\r
- ddm.stopDrag = ddm.stopDrag.createSequence(onStop, ddm);\r
- \r
- return {\r
- /**\r
- * Registers new overflow element(s) to auto scroll\r
- * @param {Mixed/Array} el The id of or the element to be scrolled or an array of either\r
- */\r
- register : function(el){\r
- if(Ext.isArray(el)){\r
- for(var i = 0, len = el.length; i < len; i++) {\r
- this.register(el[i]);\r
- }\r
- }else{\r
- el = Ext.get(el);\r
- els[el.id] = el;\r
- }\r
- },\r
- \r
- /**\r
- * Unregisters overflow element(s) so they are no longer scrolled\r
- * @param {Mixed/Array} el The id of or the element to be removed or an array of either\r
- */\r
- unregister : function(el){\r
- if(Ext.isArray(el)){\r
- for(var i = 0, len = el.length; i < len; i++) {\r
- this.unregister(el[i]);\r
- }\r
- }else{\r
- el = Ext.get(el);\r
- delete els[el.id];\r
- }\r
- },\r
- \r
- /**\r
- * The number of pixels from the top or bottom edge of a container the pointer needs to be to\r
- * trigger scrolling (defaults to 25)\r
- * @type Number\r
- */\r
- vthresh : 25,\r
- /**\r
- * The number of pixels from the right or left edge of a container the pointer needs to be to\r
- * trigger scrolling (defaults to 25)\r
- * @type Number\r
- */\r
- hthresh : 25,\r
-\r
- /**\r
- * The number of pixels to scroll in each scroll increment (defaults to 50)\r
- * @type Number\r
- */\r
- increment : 100,\r
- \r
- /**\r
- * The frequency of scrolls in milliseconds (defaults to 500)\r
- * @type Number\r
- */\r
- frequency : 500,\r
- \r
- /**\r
- * True to animate the scroll (defaults to true)\r
- * @type Boolean\r
- */\r
- animate: true,\r
- \r
- /**\r
- * The animation duration in seconds - \r
- * MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)\r
- * @type Number\r
- */\r
- animDuration: .4,\r
- \r
- /**\r
- * Manually trigger a cache refresh.\r
- */\r
- refreshCache : function(){\r
- for(var id in els){\r
- if(typeof els[id] == 'object'){ // for people extending the object prototype\r
- els[id]._region = els[id].getRegion();\r
- }\r
- }\r
- }\r
- };\r
-}();
\ No newline at end of file
git.ithinksw.org / extjs.git / blobdiff