build/dd-scroll/dd-scroll-debug.js

	dd-scroll-debug.js revision 76ca635d61eb3f9fb7c9d788a44fa8b1690aa138
c40265eba0c99708887d68e67901924065ba2514Brian WellingtonYUI.add('dd-scroll', function(Y) {
557a0ad5156aefc96dce27978a920eadf85c9d55Mark Andrews
75c0816e8295e180f4bc7f10db3d0d880383bc1cMark Andrews
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
c40265eba0c99708887d68e67901924065ba2514Brian Wellington     * Base scroller class used to create the Plugin.DDNodeScroll and Plugin.DDWinScroll.
c40265eba0c99708887d68e67901924065ba2514Brian Wellington     * This class should not be called on it's own, it's designed to be a plugin.
c40265eba0c99708887d68e67901924065ba2514Brian Wellington     * @module dd
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @submodule dd-scroll
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews     */
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews    /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * Base scroller class used to create the Plugin.DDNodeScroll and Plugin.DDWinScroll.
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews     * This class should not be called on it's own, it's designed to be a plugin.
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews     * @class Scroll
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews     * @extends Base
af5073d03288a53b646ec3b807ac25ced64d7879Mark Andrews     * @namespace DD
c40265eba0c99708887d68e67901924065ba2514Brian Wellington     * @constructor
285254345ce5ab270848f8c11f7be146793f1e00Mark Andrews     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    var S = function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        S.superclass.constructor.apply(this, arguments);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    WS, NS,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    HOST = 'host',
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    BUFFER = 'buffer',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    PARENT_SCROLL = 'parentScroll',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    WINDOW_SCROLL = 'windowScroll',
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews    SCROLL_TOP = 'scrollTop',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    SCROLL_LEFT = 'scrollLeft',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    OFFSET_WIDTH = 'offsetWidth',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    OFFSET_HEIGHT = 'offsetHeight';
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    S.ATTRS = {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews        * @attribute parentScroll
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description Internal config option to hold the node that we are scrolling. Should not be set by the developer.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @type Node
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        parentScroll: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            value: false,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            setter: function(node) {
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                if (node) {
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                    return node;
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                }
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                return false;
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            }
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        },
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        /**
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @attribute buffer
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @description The number of pixels from the edge of the screen to turn on scrolling. Default: 30
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @type Number
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        buffer: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            value: 30,
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews            validator: Y.Lang.isNumber
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @attribute scrollDelay
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description The number of milliseconds delay to pass to the auto scroller. Default: 235
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @type Number
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        scrollDelay: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            value: 235,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            validator: Y.Lang.isNumber
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @attribute host
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description The host we are plugged into.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @type Object
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        host: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            value: null
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @attribute windowScroll
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description Turn on window scroll support, default: false
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @type Boolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        */
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        windowScroll: {
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            value: false,
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            validator: Y.Lang.isBoolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        },
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        /**
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        * @attribute vertical
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        * @description Allow vertical scrolling, default: true.
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @type Boolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        */
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        vertical: {
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            value: true,
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            validator: Y.Lang.isBoolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        },
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        /**
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @attribute horizontal
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @description Allow horizontal scrolling, default: true.
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @type Boolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        */
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        horizontal: {
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            value: true,
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            validator: Y.Lang.isBoolean
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        }
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews    };
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews    Y.extend(S, Y.Base, {
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        /**
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @private
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @property _scrolling
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @description Tells if we are actively scrolling or not.
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @type Boolean
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        */
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        _scrolling: null,
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        /**
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        * @private
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        * @property _vpRegionCache
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        * @description Cache of the Viewport dims.
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        * @type Object
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        */
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        _vpRegionCache: null,
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews        /**
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @private
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @property _dimCache
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @description Cache of the dragNode dims.
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @type Object
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        */
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        _dimCache: null,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        /**
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @private
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @property _scrollTimer
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @description Holder for the Timer object returned from Y.later.
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @type {Y.later}
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        */
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        _scrollTimer: null,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        /**
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @private
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @method _getVPRegion
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description Sets the _vpRegionCache property with an Object containing the dims from the viewport.
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        */
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        _getVPRegion: function() {
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            var r = {},
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                n = this.get(PARENT_SCROLL),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            b = this.get(BUFFER),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            ws = this.get(WINDOW_SCROLL),
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            xy = ((ws) ? [] : n.getXY()),
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            w = ((ws) ? 'winWidth' : OFFSET_WIDTH),
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            h = ((ws) ? 'winHeight' : OFFSET_HEIGHT),
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            t = ((ws) ? n.get(SCROLL_TOP) : xy[1]),
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            l = ((ws) ? n.get(SCROLL_LEFT) : xy[0]);
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews            r = {
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews                top: t + b,
3a3705ef7747327df182bf8d009333d2472253d5Mark Andrews                right: (n.get(w) + l) - b,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                bottom: (n.get(h) + t) - b,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                left: l + b
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews            };
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews            this._vpRegionCache = r;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews            return r;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        },
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        initializer: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            var h = this.get(HOST);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            h.after('drag:start', Y.bind(this.start, this));
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            h.after('drag:end', Y.bind(this.end, this));
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            h.on('drag:align', Y.bind(this.align, this));
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            //TODO - This doesn't work yet??
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            Y.one('win').on('scroll', Y.bind(function() {
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                this._vpRegionCache = null;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }, this));
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @private
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @method _checkWinScroll
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        * @description Check to see if we need to fire the scroll timer. If scroll timer is running this will scroll the window.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @param {Boolean} move Should we move the window. From Y.later
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        */
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews        _checkWinScroll: function(move) {
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews            var r = this._getVPRegion(),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                ho = this.get(HOST),
285254345ce5ab270848f8c11f7be146793f1e00Mark Andrews                ws = this.get(WINDOW_SCROLL),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                xy = ho.lastXY,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                scroll = false,
285254345ce5ab270848f8c11f7be146793f1e00Mark Andrews                b = this.get(BUFFER),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                win = this.get(PARENT_SCROLL),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                sTop = win.get(SCROLL_TOP),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                sLeft = win.get(SCROLL_LEFT),
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                w = this._dimCache.w,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                h = this._dimCache.h,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                bottom = xy[1] + h,
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                top = xy[1],
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                right = xy[0] + w,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                left = xy[0],
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                nt = top,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                nl = left,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                st = sTop,
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews                sl = sLeft;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (this.get('horizontal')) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (left <= r.left) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    scroll = true;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    nl = xy[0] - ((ws) ? b : 0);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    sl = sLeft - b;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (right >= r.right) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    scroll = true;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    nl = xy[0] + ((ws) ? b : 0);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    sl = sLeft + b;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (this.get('vertical')) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (bottom >= r.bottom) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    scroll = true;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    nt = xy[1] + ((ws) ? b : 0);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    st = sTop + b;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
7208386cd37a2092c70eddf80cf29519b16c4c80Mark Andrews                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (top <= r.top) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    scroll = true;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    nt = xy[1] - ((ws) ? b : 0);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    st = sTop - b;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (st < 0) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                st = 0;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                nt = xy[1];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (sl < 0) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                sl = 0;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                nl = xy[0];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (nt < 0) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                nt = xy[1];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (nl < 0) {
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews                nl = xy[0];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (move) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                ho.actXY = [nl, nt];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                ho._moveNode({ node: win, top: st, left: sl});
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (!st && !sl) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    this._cancelScroll();
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            } else {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (scroll) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    this._initScroll();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                } else {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    this._cancelScroll();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
71c66a876ecca77923638d3f94cc0783152b2f03Mark Andrews            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @private
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @method _initScroll
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        * @description Cancel a previous scroll timer and init a new one.
        */
        _initScroll: function() {
            this._cancelScroll();
            this._scrollTimer = Y.Lang.later(this.get('scrollDelay'), this, this._checkWinScroll, [true], true);

        },
        /**
        * @private
        * @method _cancelScroll
        * @description Cancel a currently running scroll timer.
        */
        _cancelScroll: function() {
            this._scrolling = false;
            if (this._scrollTimer) {
                this._scrollTimer.cancel();
                delete this._scrollTimer;
            }
        },
        /**
        * @method align
        * @description Called from the drag:align event to determine if we need to scroll.
        */
        align: function(e) {
            if (this._scrolling) {
                this._cancelScroll();
                e.preventDefault();
            }
            if (!this._scrolling) {
                this._checkWinScroll();
            }
        },
        /**
        * @private
        * @method _setDimCache
        * @description Set the cache of the dragNode dims.
        */
        _setDimCache: function() {
            var node = this.get(HOST).get('dragNode');
            this._dimCache = {
                h: node.get(OFFSET_HEIGHT),
                w: node.get(OFFSET_WIDTH)
            };
        },
        /**
        * @method start
        * @description Called from the drag:start event
        */
        start: function() {
            this._setDimCache();
        },
        /**
        * @method end
        * @description Called from the drag:end event
        */
        end: function(xy) {
            this._dimCache = null;
            this._cancelScroll();
        },
        /**
        * @method toString
        * @description General toString method for logging
        * @return String name for the object
        */
        toString: function() {
            return S.NAME + ' #' + this.get('node').get('id');
        }
    });

    Y.namespace('Plugin');


    /**
     * Extends the Scroll class to make the window scroll while dragging.
     * @class DDWindowScroll
     * @extends Scroll
     * @namespace Plugin
     * @constructor
     */
    WS = function() {
        WS.superclass.constructor.apply(this, arguments);
    };
    WS.ATTRS = Y.merge(S.ATTRS, {
        /**
        * @attribute windowScroll
        * @description Turn on window scroll support, default: true
        * @type Boolean
        */
        windowScroll: {
            value: true,
            setter: function(scroll) {
                if (scroll) {
                    this.set(PARENT_SCROLL, Y.one('win'));
                }
                return scroll;
            }
        }
    });
    Y.extend(WS, S, {
        //Shouldn't have to do this..
        initializer: function() {
            this.set('windowScroll', this.get('windowScroll'));
        }
    });
    /**
    * @property NS
    * @default winscroll
    * @readonly
    * @protected
    * @static
    * @description The Scroll instance will be placed on the Drag instance under the winscroll namespace.
    * @type {String}
    */
    WS.NAME = WS.NS = 'winscroll';
    Y.Plugin.DDWinScroll = WS;


    /**
     * Extends the Scroll class to make a parent node scroll while dragging.
     * @class DDNodeScroll
     * @extends Scroll
     * @namespace Plugin
     * @constructor
     */
    NS = function() {
        NS.superclass.constructor.apply(this, arguments);

    };
    NS.ATTRS = Y.merge(S.ATTRS, {
        /**
        * @attribute node
        * @description The node we want to scroll. Used to set the internal parentScroll attribute.
        * @type Node
        */
        node: {
            value: false,
            setter: function(node) {
                var n = Y.one(node);
                if (!n) {
                    if (node !== false) {
                        Y.error('DDNodeScroll: Invalid Node Given: ' + node);
                    }
                } else {
                    this.set(PARENT_SCROLL, n);
                }
                return n;
            }
        }
    });
    Y.extend(NS, S, {
        //Shouldn't have to do this..
        initializer: function() {
            this.set('node', this.get('node'));
        }
    });
    /**
    * @property NS
    * @default nodescroll
    * @readonly
    * @protected
    * @static
    * @description The NodeScroll instance will be placed on the Drag instance under the nodescroll namespace.
    * @type {String}
    */
    NS.NAME = NS.NS = 'nodescroll';
    Y.Plugin.DDNodeScroll = NS;

    Y.DD.Scroll = S;


}, '@VERSION@' ,{skinnable:false, optional:['dd-proxy'], requires:['dd-drag']});