Mercurial Hosting > nabble

comparison src/nabble/view/web/util/minmax.js @ 0:7ecd1a4ef557

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
add content
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:7ecd1a4ef557
1 // minmax.js: make IE5+/Win support CSS min/max-width/height
2 // version 1.0, 08-Aug-2003
3 // written by Andrew Clover <and@doxdesk.com>, use freely
4
5 /*@cc_on
6 @if (@_win32 && @_jscript_version>4)
7
8 var minmax_elements;
9
10 minmax_props= new Array(
11 new Array('min-width', 'minWidth'),
12 new Array('max-width', 'maxWidth'),
13 new Array('min-height','minHeight'),
14 new Array('max-height','maxHeight')
15 );
16
17 // Binding. Called on all new elements. If <body>, initialise; check all
18 // elements for minmax properties
19
20 function minmax_bind(el) {
21 var i, em, ms;
22 var st= el.style, cs= el.currentStyle;
23
24 if (minmax_elements==window.undefined) {
25 // initialise when body element has turned up, but only on IE
26 if (!document.body || !document.body.currentStyle) return;
27 minmax_elements= new Array();
28 window.attachEvent('onresize', minmax_delayout);
29 // make font size listener
30 em= document.createElement('div');
31 em.setAttribute('id', 'minmax_em');
32 em.style.position= 'absolute'; em.style.visibility= 'hidden';
33 em.style.fontSize= 'xx-large'; em.style.height= '5em';
34 em.style.top='-5em'; em.style.left= '0';
35 if (em.style.setExpression) {
36 em.style.setExpression('width', 'minmax_checkFont()');
37 document.body.insertBefore(em, document.body.firstChild);
38 }
39 }
40
41 // transform hyphenated properties the browser has not caught to camelCase
42 for (i= minmax_props.length; i-->0;)
43 if (cs[minmax_props[i][0]])
44 st[minmax_props[i][1]]= cs[minmax_props[i][0]];
45 // add element with properties to list, store optimal size values
46 for (i= minmax_props.length; i-->0;) {
47 ms= cs[minmax_props[i][1]];
48 if (ms && ms!='auto' && ms!='none' && ms!='0' && ms!='') {
49 st.minmaxWidth= cs.width; st.minmaxHeight= cs.height;
50 minmax_elements[minmax_elements.length]= el;
51 // will need a layout later
52 minmax_delayout();
53 break;
54 } }
55 }
56
57 // check for font size changes
58
59 var minmax_fontsize= 0;
60 function minmax_checkFont() {
61 var fs= document.getElementById('minmax_em').offsetHeight;
62 if (minmax_fontsize!=fs && minmax_fontsize!=0)
63 minmax_delayout();
64 minmax_fontsize= fs;
65 return '5em';
66 }
67
68 // Layout. Called after window and font size-change. Go through elements we
69 // picked out earlier and set their size to the minimum, maximum and optimum,
70 // choosing whichever is appropriate
71
72 function minmax_delayout() {
73 minmax_layout();
74 }
75
76 function minmax_layout() {
77 var i, el, st, cs, optimal, inrange;
78 for (i= minmax_elements.length; i-->0;) {
79 el= minmax_elements[i]; st= el.style; cs= el.currentStyle;
80
81 // horizontal size bounding
82 st.width= st.minmaxWidth; optimal= el.offsetWidth;
83 inrange= true;
84 if (inrange && cs.minWidth && cs.minWidth!='0' && cs.minWidth!='auto' && cs.minWidth!='') {
85 st.width= cs.minWidth;
86 inrange= (el.offsetWidth<optimal);
87 }
88 if (inrange && cs.maxWidth && cs.maxWidth!='none' && cs.maxWidth!='auto' && cs.maxWidth!='') {
89 st.width= cs.maxWidth;
90 inrange= (el.offsetWidth>optimal);
91 }
92 if (inrange) st.width= st.minmaxWidth;
93
94 // vertical size bounding
95 st.height= st.minmaxHeight; optimal= el.offsetHeight;
96 inrange= true;
97 if (inrange && cs.minHeight && cs.minHeight!='0' && cs.minHeight!='auto' && cs.minHeight!='') {
98 st.height= cs.minHeight;
99 inrange= (el.offsetHeight<optimal);
100 }
101 if (inrange && cs.maxHeight && cs.maxHeight!='none' && cs.maxHeight!='auto' && cs.maxHeight!='') {
102 st.height= cs.maxHeight;
103 inrange= (el.offsetHeight>optimal);
104 }
105 if (inrange) st.height= st.minmaxHeight;
106 }
107 }
108
109 // Scanning. Check document every so often until it has finished loading. Do
110 // nothing until <body> arrives, then call main init. Pass any new elements
111 // found on each scan to be bound
112
113 var minmax_SCANDELAY= 500;
114
115 function minmax_scan() {
116 var el;
117 for (var i= 0; i<document.all.length; i++) {
118 el= document.all[i];
119 if (!el.minmax_bound) {
120 el.minmax_bound= true;
121 minmax_bind(el);
122 } }
123 }
124
125 var minmax_scanner;
126 function minmax_stop() {
127 window.clearInterval(minmax_scanner);
128 minmax_scan();
129 }
130
131 minmax_scan();
132 minmax_scanner=window.setInterval(minmax_scan, minmax_SCANDELAY);
133 window.attachEvent('onload', minmax_stop);
134
135 @end @*/