forked from dojo/dojo-oldmirror
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathwindow.js
132 lines (120 loc) · 4.73 KB
/
window.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
dojo.provide("dojo.window");
dojo.window.getBox = function(){
// summary:
// Returns the dimensions and scroll position of the viewable area of a browser window
var scrollRoot = (dojo.doc.compatMode == 'BackCompat') ? dojo.body() : dojo.doc.documentElement;
// get scroll position
var scroll = dojo._docScroll(); // scrollRoot.scrollTop/Left should work
return { w: scrollRoot.clientWidth, h: scrollRoot.clientHeight, l: scroll.x, t: scroll.y };
};
dojo.window.get = function(doc){
// summary:
// Get window object associated with document doc
// In some IE versions (at least 6.0), document.parentWindow does not return a
// reference to the real window object (maybe a copy), so we must fix it as well
// We use IE specific execScript to attach the real window reference to
// document._parentWindow for later use
if(dojo.isIE && window !== document.parentWindow){
/*
In IE 6, only the variable "window" can be used to connect events (others
may be only copies).
*/
doc.parentWindow.execScript("document._parentWindow = window;", "Javascript");
//to prevent memory leak, unset it after use
//another possibility is to add an onUnload handler which seems overkill to me (liucougar)
var win = doc._parentWindow;
doc._parentWindow = null;
return win; // Window
}
return doc.parentWindow || doc.defaultView; // Window
};
dojo.window.scrollIntoView = function(/*DomNode*/ node, /*Object?*/ pos){
// summary:
// Scroll the passed node into view, if it is not already.
// don't rely on node.scrollIntoView working just because the function is there
try{ // catch unexpected/unrecreatable errors (#7808) since we can recover using a semi-acceptable native method
node = dojo.byId(node);
var doc = node.ownerDocument || dojo.doc,
body = doc.body || dojo.body(),
html = doc.documentElement || body.parentNode,
isIE = dojo.isIE, isWK = dojo.isWebKit;
// if an untested browser, then use the native method
if((!(dojo.isMoz || isIE || isWK || dojo.isOpera) || node == body || node == html) && (typeof node.scrollIntoView != "undefined")){
node.scrollIntoView(false); // short-circuit to native if possible
return;
}
var backCompat = doc.compatMode == 'BackCompat',
clientAreaRoot = backCompat? body : html,
scrollRoot = isWK ? body : clientAreaRoot,
rootWidth = clientAreaRoot.clientWidth,
rootHeight = clientAreaRoot.clientHeight,
rtl = !dojo._isBodyLtr(),
nodePos = pos || dojo.position(node),
el = node.parentNode,
isFixed = function(el){
return ((isIE <= 6 || (isIE && backCompat))? false : (dojo.style(el, 'position').toLowerCase() == "fixed"));
};
if(isFixed(node)){ return; } // nothing to do
while(el){
if(el == body){ el = scrollRoot; }
var elPos = dojo.position(el),
fixedPos = isFixed(el);
if(el == scrollRoot){
elPos.w = rootWidth; elPos.h = rootHeight;
if(scrollRoot == html && isIE && rtl){ elPos.x += scrollRoot.offsetWidth-elPos.w; } // IE workaround where scrollbar causes negative x
if(elPos.x < 0 || !isIE){ elPos.x = 0; } // IE can have values > 0
if(elPos.y < 0 || !isIE){ elPos.y = 0; }
}else{
var pb = dojo._getPadBorderExtents(el);
elPos.w -= pb.w; elPos.h -= pb.h; elPos.x += pb.l; elPos.y += pb.t;
}
if(el != scrollRoot){ // body, html sizes already have the scrollbar removed
var clientSize = el.clientWidth,
scrollBarSize = elPos.w - clientSize;
if(clientSize > 0 && scrollBarSize > 0){
elPos.w = clientSize;
if(isIE && rtl){ elPos.x += scrollBarSize; }
}
clientSize = el.clientHeight;
scrollBarSize = elPos.h - clientSize;
if(clientSize > 0 && scrollBarSize > 0){
elPos.h = clientSize;
}
}
if(fixedPos){ // bounded by viewport, not parents
if(elPos.y < 0){
elPos.h += elPos.y; elPos.y = 0;
}
if(elPos.x < 0){
elPos.w += elPos.x; elPos.x = 0;
}
if(elPos.y + elPos.h > rootHeight){
elPos.h = rootHeight - elPos.y;
}
if(elPos.x + elPos.w > rootWidth){
elPos.w = rootWidth - elPos.x;
}
}
// calculate overflow in all 4 directions
var l = nodePos.x - elPos.x, // beyond left: < 0
t = nodePos.y - Math.max(elPos.y, 0), // beyond top: < 0
r = l + nodePos.w - elPos.w, // beyond right: > 0
bot = t + nodePos.h - elPos.h; // beyond bottom: > 0
if(r * l > 0){
var s = Math[l < 0? "max" : "min"](l, r);
nodePos.x += el.scrollLeft;
el.scrollLeft += (isIE >= 8 && !backCompat && rtl)? -s : s;
nodePos.x -= el.scrollLeft;
}
if(bot * t > 0){
nodePos.y += el.scrollTop;
el.scrollTop += Math[t < 0? "max" : "min"](t, bot);
nodePos.y -= el.scrollTop;
}
el = (el != scrollRoot) && !fixedPos && el.parentNode;
}
}catch(error){
console.error('scrollIntoView: ' + error);
node.scrollIntoView(false);
}
};