+++ /dev/null
-<html>
-<head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>The source code</title>
- <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
- <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
-</head>
-<body onload="prettyPrint();">
- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.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},
- * {@link #vthresh}, {@link #increment} and {@link #frequency}. Example usage:
- * <pre><code>
-var el = Ext.get('scroll-ct');
-el.ddScrollConfig = {
- vthresh: 50,
- hthresh: -1,
- frequency: 100,
- increment: 200
-};
-Ext.dd.ScrollManager.register(el);
-</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,
- els = {},
- dragEl = null,
- proc = {},
- onStop = function(e) {
- dragEl = null;
- clearProc();
- },
- triggerRefresh = function() {
- if (ddm.dragCurrent) {
- ddm.refreshCache(ddm.dragCurrent.groups);
- }
- },
- doScroll = function() {
- if (ddm.dragCurrent) {
- var dds = Ext.dd.ScrollManager,
- 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);
- }
- }
- },
- clearProc = function() {
- if (proc.id) {
- clearInterval(proc.id);
- }
- proc.id = 0;
- proc.el = null;
- proc.dir = "";
- },
- 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,
- group = el.ddScrollConfig ? el.ddScrollConfig.ddGroup: undefined;
-
- if (group === undefined || ddm.dragCurrent.ddGroup == group) {
- proc.id = setInterval(doScroll, freq);
- }
- },
- 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),
- pt = new Ext.lib.Point(xy[0], xy[1]),
- id,
- el,
- r,
- c;
- for (id in els) {
- if (els.hasOwnProperty(id)) {
- el = els[id];
- r = el._region;
- 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 {
- <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)) {
- var i = 0,
- len = el.length;
- for (; i < len; i++) {
- this.register(el[i]);
- }
- } else {
- el = Ext.get(el);
- els[el.id] = el;
- }
- },
-
- <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)) {
- var i = 0,
- len = el.length;
- for (; i < len; i++) {
- this.unregister(el[i]);
- }
- } else {
- el = Ext.get(el);
- delete els[el.id];
- }
- },
-
- <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: 0.4,
-
- <div id="method-Ext.dd.ScrollManager-refreshCache"></div>/**
- * Manually trigger a cache refresh.
- */
- refreshCache: function() {
- var id;
- for (id in els) {
- if (els.hasOwnProperty(id)) {
- 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
git.ithinksw.org / extjs.git / blobdiff