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- <title>The source code</title>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.2.1
- * Copyright(c) 2006-2010 Ext JS, Inc.
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-<div id="cls-Ext.dd.ScrollManager"></div>/**
- * @class Ext.dd.ScrollManager
- * <p>Provides automatic scrolling of overflow regions in the page during drag operations.</p>
- * <p>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
- * <tt>ddScrollConfig</tt> object to the target element that contains these properties: {@link #hthresh},
+<!DOCTYPE html><html><head><title>Sencha Documentation Project</title><link rel="stylesheet" href="../reset.css" type="text/css"><link rel="stylesheet" href="../prettify.css" type="text/css"><link rel="stylesheet" href="../prettify_sa.css" type="text/css"><script type="text/javascript" src="../prettify.js"></script></head><body onload="prettyPrint()"><pre class="prettyprint"><pre><span id='Ext-dd.ScrollManager'>/**
+</span> * @class Ext.dd.ScrollManager
+ * <p>Provides automatic scrolling of overflow regions in the page during drag operations.</p>
+ * <p>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
+ * <tt>ddScrollConfig</tt> object to the target element that contains these properties: {@link #hthresh},
* {@link #vthresh}, {@link #increment} and {@link #frequency}. Example usage:
- * <pre><code>
+ * <pre><code>
var el = Ext.get('scroll-ct');
el.ddScrollConfig = {
vthresh: 50,
increment: 200
};
Ext.dd.ScrollManager.register(el);
-</code></pre>
- * <b>Note: This class uses "Point Mode" and is untested in "Intersect Mode".</b>
+</code></pre>
+ * <b>Note: This class uses "Point Mode" and is untested in "Intersect Mode".</b>
* @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);
+Ext.define('Ext.dd.ScrollManager', {
+ singleton: true,
+ requires: [
+ 'Ext.dd.DragDropManager'
+ ],
+
+ constructor: function() {
+ var ddm = Ext.dd.DragDropManager;
+ ddm.fireEvents = Ext.Function.createSequence(ddm.fireEvents, this.onFire, this);
+ ddm.stopDrag = Ext.Function.createSequence(ddm.stopDrag, this.onStop, this);
+ this.doScroll = Ext.Function.bind(this.doScroll, this);
+ this.ddmInstance = ddm;
+ this.els = {};
+ this.dragEl = null;
+ this.proc = {};
+ },
+
+ onStop: function(e){
+ var sm = Ext.dd.ScrollManager;
+ sm.dragEl = null;
+ sm.clearProc();
+ },
+
+ triggerRefresh: function() {
+ if (this.ddmInstance.dragCurrent) {
+ this.ddmInstance.refreshCache(this.ddmInstance.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();
+ },
+
+ doScroll: function() {
+ if (this.ddmInstance.dragCurrent) {
+ var proc = this.proc,
+ procEl = proc.el,
+ ddScrollConfig = proc.el.ddScrollConfig,
+ inc = ddScrollConfig ? ddScrollConfig.increment : this.increment;
+
+ if (!this.animate) {
+ if (procEl.scroll(proc.dir, inc)) {
+ this.triggerRefresh();
}
- }else{
- proc.el.scroll(proc.dir, inc, true, dds.animDuration, triggerRefresh);
+ } else {
+ procEl.scroll(proc.dir, inc, true, this.animDuration, this.triggerRefresh);
}
}
- };
-
- var clearProc = function(){
- if(proc.id){
+ },
+
+ clearProc: function() {
+ var proc = this.proc;
+ 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;
+ proc.dir = "";
+ },
+
+ startProc: function(el, dir) {
+ this.clearProc();
+ this.proc.el = el;
+ this.proc.dir = dir;
+ var group = el.ddScrollConfig ? el.ddScrollConfig.ddGroup : undefined,
+ freq = (el.ddScrollConfig && el.ddScrollConfig.frequency)
+ ? el.ddScrollConfig.frequency
+ : this.frequency;
+
+ if (group === undefined || this.ddmInstance.dragCurrent.ddGroup == group) {
+ this.proc.id = setInterval(this.doScroll, freq);
+ }
+ },
+
+ onFire: function(e, isDrop) {
+ if (isDrop || !this.ddmInstance.dragCurrent) {
+ return;
+ }
+ if (!this.dragEl || this.dragEl != this.ddmInstance.dragCurrent) {
+ this.dragEl = this.ddmInstance.dragCurrent;
// refresh regions on drag start
- dds.refreshCache();
+ this.refreshCache();
}
-
- var xy = Ext.lib.Event.getXY(e);
- var pt = new Ext.lib.Point(xy[0], xy[1]);
- for(var id in els){
+
+ var xy = e.getXY(),
+ pt = e.getPoint(),
+ proc = this.proc,
+ els = this.els;
+
+ 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){
+ var c = el.ddScrollConfig ? el.ddScrollConfig : this;
+ if (r && r.contains(pt) && el.isScrollable()) {
+ if (r.bottom - pt.y <= c.vthresh) {
if(proc.el != el){
- startProc(el, "down");
+ this.startProc(el, "down");
}
return;
- }else if(r.right - pt.x <= c.hthresh){
- if(proc.el != el){
- startProc(el, "left");
+ }else if (r.right - pt.x <= c.hthresh) {
+ if (proc.el != el) {
+ this.startProc(el, "left");
}
return;
- }else if(pt.y - r.top <= c.vthresh){
- if(proc.el != el){
- startProc(el, "up");
+ } else if(pt.y - r.top <= c.vthresh) {
+ if (proc.el != el) {
+ this.startProc(el, "up");
}
return;
- }else if(pt.x - r.left <= c.hthresh){
- if(proc.el != el){
- startProc(el, "right");
+ } else if(pt.x - r.left <= c.hthresh) {
+ if (proc.el != el) {
+ this.startProc(el, "right");
}
return;
}
}
}
- clearProc();
- };
-
- ddm.fireEvents = ddm.fireEvents.createSequence(onFire, ddm);
- ddm.stopDrag = ddm.stopDrag.createSequence(onStop, ddm);
-
- return {
- <div id="method-Ext.dd.ScrollManager-register"></div>/**
- * 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;
+ this.clearProc();
+ },
+
+<span id='Ext-dd.ScrollManager-method-register'> /**
+</span> * 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]);
}
- },
-
- <div id="method-Ext.dd.ScrollManager-unregister"></div>/**
- * 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];
+ } else {
+ el = Ext.get(el);
+ this.els[el.id] = el;
+ }
+ },
+
+<span id='Ext-dd.ScrollManager-method-unregister'> /**
+</span> * 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]);
}
- },
-
- <div id="prop-Ext.dd.ScrollManager-vthresh"></div>/**
- * 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,
- <div id="prop-Ext.dd.ScrollManager-hthresh"></div>/**
- * 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,
-
- <div id="prop-Ext.dd.ScrollManager-increment"></div>/**
- * The number of pixels to scroll in each scroll increment (defaults to 50)
- * @type Number
- */
- increment : 100,
-
- <div id="prop-Ext.dd.ScrollManager-frequency"></div>/**
- * The frequency of scrolls in milliseconds (defaults to 500)
- * @type Number
- */
- frequency : 500,
-
- <div id="prop-Ext.dd.ScrollManager-animate"></div>/**
- * True to animate the scroll (defaults to true)
- * @type Boolean
- */
- animate: true,
-
- <div id="prop-Ext.dd.ScrollManager-animDuration"></div>/**
- * The animation duration in seconds -
- * MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)
- * @type Number
- */
- animDuration: .4,
-
- <div id="method-Ext.dd.ScrollManager-refreshCache"></div>/**
- * 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();
- }
+ }else{
+ el = Ext.get(el);
+ delete this.els[el.id];
+ }
+ },
+
+<span id='Ext-dd.ScrollManager-property-vthresh'> /**
+</span> * 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,
+<span id='Ext-dd.ScrollManager-property-hthresh'> /**
+</span> * 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,
+
+<span id='Ext-dd.ScrollManager-property-increment'> /**
+</span> * The number of pixels to scroll in each scroll increment (defaults to 100)
+ * @type Number
+ */
+ increment : 100,
+
+<span id='Ext-dd.ScrollManager-property-frequency'> /**
+</span> * The frequency of scrolls in milliseconds (defaults to 500)
+ * @type Number
+ */
+ frequency : 500,
+
+<span id='Ext-dd.ScrollManager-property-animate'> /**
+</span> * True to animate the scroll (defaults to true)
+ * @type Boolean
+ */
+ animate: true,
+
+<span id='Ext-dd.ScrollManager-property-animDuration'> /**
+</span> * The animation duration in seconds -
+ * MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)
+ * @type Number
+ */
+ animDuration: 0.4,
+
+<span id='Ext-dd.ScrollManager-property-ddGroup'> /**
+</span> * The named drag drop {@link Ext.dd.DragSource#ddGroup group} to which this container belongs (defaults to undefined).
+ * If a ddGroup is specified, then container scrolling will only occur when a dragged object is in the same ddGroup.
+ * @type String
+ */
+ ddGroup: undefined,
+
+<span id='Ext-dd.ScrollManager-method-refreshCache'> /**
+</span> * Manually trigger a cache refresh.
+ */
+ refreshCache : function(){
+ var els = this.els,
+ id;
+ for (id in els) {
+ if(typeof els[id] == 'object'){ // for people extending the object prototype
+ els[id]._region = els[id].getRegion();
}
}
- };
-}();</pre>
-</body>
-</html>
\ No newline at end of file
+ }
+});
+</pre></pre></body></html>
\ No newline at end of file
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