author | Giulio Cesare Solaroli <giulio.cesare@clipperz.com> | 2011-10-02 23:56:18 (UTC) |
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committer | Giulio Cesare Solaroli <giulio.cesare@clipperz.com> | 2011-10-02 23:56:18 (UTC) |
commit | ef68436ac04da078ffdcacd7e1f785473a303d45 (patch) (unidiff) | |
tree | c403752d66a2c4775f00affd4fa8431b29c5b68c /frontend/beta/js/YUI-extensions/dd/ScrollManager.js | |
parent | 597ecfbc0249d83e1b856cbd558340c01237a360 (diff) | |
download | clipperz-ef68436ac04da078ffdcacd7e1f785473a303d45.zip clipperz-ef68436ac04da078ffdcacd7e1f785473a303d45.tar.gz clipperz-ef68436ac04da078ffdcacd7e1f785473a303d45.tar.bz2 |
First version of the newly restructured repository
Diffstat (limited to 'frontend/beta/js/YUI-extensions/dd/ScrollManager.js') (more/less context) (show whitespace changes)
-rw-r--r-- | frontend/beta/js/YUI-extensions/dd/ScrollManager.js | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/frontend/beta/js/YUI-extensions/dd/ScrollManager.js b/frontend/beta/js/YUI-extensions/dd/ScrollManager.js new file mode 100644 index 0000000..615aadf --- a/dev/null +++ b/frontend/beta/js/YUI-extensions/dd/ScrollManager.js | |||
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1 | // kill dependency issue | ||
2 | if(YAHOO.util.DragDrop){ | ||
3 | /** | ||
4 | * @class YAHOO.ext.dd.ScrollManager | ||
5 | * Provides automatic scrolling of overflow regions in the page during drag operations.<br><br> | ||
6 | * <b>Note: This class uses "Point Mode" and is untested in "Intersect Mode".</b> | ||
7 | * @singleton | ||
8 | */ | ||
9 | YAHOO.ext.dd.ScrollManager = function(){ | ||
10 | var ddm = YAHOO.util.DragDropMgr; | ||
11 | var els = {}; | ||
12 | var dragEl = null; | ||
13 | var proc = {}; | ||
14 | |||
15 | var onStop = function(e){ | ||
16 | dragEl = null; | ||
17 | clearProc(); | ||
18 | }; | ||
19 | |||
20 | var triggerRefresh = function(){ | ||
21 | if(ddm.dragCurrent){ | ||
22 | ddm.refreshCache(ddm.dragCurrent.groups); | ||
23 | } | ||
24 | } | ||
25 | |||
26 | var doScroll = function(){ | ||
27 | if(ddm.dragCurrent){ | ||
28 | var dds = YAHOO.ext.dd.ScrollManager; | ||
29 | if(!dds.animate || !YAHOO.util.Scroll){ | ||
30 | if(proc.el.scroll(proc.dir, dds.increment)){ | ||
31 | triggerRefresh(); | ||
32 | } | ||
33 | }else{ | ||
34 | proc.el.scroll(proc.dir, dds.increment, true, dds.animDuration, triggerRefresh); | ||
35 | } | ||
36 | } | ||
37 | }; | ||
38 | |||
39 | var clearProc = function(){ | ||
40 | if(proc.id){ | ||
41 | clearInterval(proc.id); | ||
42 | } | ||
43 | proc.id = 0; | ||
44 | proc.el = null; | ||
45 | proc.dir = ''; | ||
46 | }; | ||
47 | |||
48 | var startProc = function(el, dir){ | ||
49 | clearProc(); | ||
50 | proc.el = el; | ||
51 | proc.dir = dir; | ||
52 | proc.id = setInterval(doScroll, YAHOO.ext.dd.ScrollManager.frequency); | ||
53 | }; | ||
54 | |||
55 | var onFire = function(e, isDrop){ | ||
56 | if(isDrop || !ddm.dragCurrent){ return; } | ||
57 | var dds = YAHOO.ext.dd.ScrollManager; | ||
58 | if(!dragEl || dragEl != ddm.dragCurrent){ | ||
59 | dragEl = ddm.dragCurrent; | ||
60 | // refresh regions on drag start | ||
61 | dds.refreshCache(); | ||
62 | } | ||
63 | |||
64 | var xy = YAHOO.util.Event.getXY(e); | ||
65 | var pt = new YAHOO.util.Point(xy[0], xy[1]); | ||
66 | for(var id in els){ | ||
67 | var el = els[id], r = el._region; | ||
68 | if(r.contains(pt) && el.isScrollable()){ | ||
69 | if(r.bottom - pt.y <= dds.thresh){ | ||
70 | if(proc.el != el){ | ||
71 | startProc(el, 'down'); | ||
72 | } | ||
73 | return; | ||
74 | }else if(r.right - pt.x <= dds.thresh){ | ||
75 | if(proc.el != el){ | ||
76 | startProc(el, 'left'); | ||
77 | } | ||
78 | return; | ||
79 | }else if(pt.y - r.top <= dds.thresh){ | ||
80 | if(proc.el != el){ | ||
81 | startProc(el, 'up'); | ||
82 | } | ||
83 | return; | ||
84 | }else if(pt.x - r.left <= dds.thresh){ | ||
85 | if(proc.el != el){ | ||
86 | startProc(el, 'right'); | ||
87 | } | ||
88 | return; | ||
89 | } | ||
90 | } | ||
91 | } | ||
92 | clearProc(); | ||
93 | }; | ||
94 | |||
95 | ddm.fireEvents = ddm.fireEvents.createSequence(onFire, ddm); | ||
96 | ddm.stopDrag = ddm.stopDrag.createSequence(onStop, ddm); | ||
97 | |||
98 | return { | ||
99 | /** | ||
100 | * Registers new overflow element(s) to auto scroll | ||
101 | * @param {String/HTMLElement/Element/Array} el The id of or the element to be scrolled or an array of either | ||
102 | */ | ||
103 | register : function(el){ | ||
104 | if(el instanceof Array){ | ||
105 | for(var i = 0, len = el.length; i < len; i++) { | ||
106 | this.register(el[i]); | ||
107 | } | ||
108 | }else{ | ||
109 | el = getEl(el); | ||
110 | els[el.id] = el; | ||
111 | } | ||
112 | }, | ||
113 | |||
114 | /** | ||
115 | * Unregisters overflow element(s) so they are no longer scrolled | ||
116 | * @param {String/HTMLElement/Element/Array} el The id of or the element to be removed or an array of either | ||
117 | */ | ||
118 | unregister : function(el){ | ||
119 | if(el instanceof Array){ | ||
120 | for(var i = 0, len = el.length; i < len; i++) { | ||
121 | this.unregister(el[i]); | ||
122 | } | ||
123 | }else{ | ||
124 | el = getEl(el); | ||
125 | delete els[el.id]; | ||
126 | } | ||
127 | }, | ||
128 | |||
129 | /** | ||
130 | * The number of pixels from the edge of a container the pointer needs to be to | ||
131 | * trigger scrolling (defaults to 25) | ||
132 | * @type Number | ||
133 | */ | ||
134 | thresh : 25, | ||
135 | |||
136 | /** | ||
137 | * The number of pixels to scroll in each scroll increment (defaults to 50) | ||
138 | * @type Number | ||
139 | */ | ||
140 | increment : 100, | ||
141 | |||
142 | /** | ||
143 | * The frequency of scrolls in milliseconds (defaults to 500) | ||
144 | * @type Number | ||
145 | */ | ||
146 | frequency : 500, | ||
147 | |||
148 | /** | ||
149 | * True to animate the scroll (defaults to true) | ||
150 | * @type Boolean | ||
151 | */ | ||
152 | animate: true, | ||
153 | |||
154 | /** | ||
155 | * The animation duration in seconds - | ||
156 | * MUST BE less than YAHOO.ext.dd.ScrollManager.frequency! (defaults to .4) | ||
157 | * @type Number | ||
158 | */ | ||
159 | animDuration: .4, | ||
160 | |||
161 | /** | ||
162 | * Manually trigger a cache refresh. | ||
163 | */ | ||
164 | refreshCache : function(){ | ||
165 | for(var id in els){ | ||
166 | els[id]._region = els[id].getRegion(); | ||
167 | } | ||
168 | } | ||
169 | } | ||
170 | }(); | ||
171 | } | ||