1 |
/* |
2 |
simple yet powerful implementation of show/hide effect |
3 |
with history navigation (back/forward/default) |
4 |
|
5 |
Dobrica Pavlinusic <dpavlin@rot13.org> 2004-09-12 |
6 |
*/ |
7 |
|
8 |
var changed_display_ids = []; |
9 |
var changed_display_pos = 0; |
10 |
var id_cache = []; |
11 |
|
12 |
var debug_on = true; |
13 |
function debug(text) { |
14 |
if (debug_on) debug_on = confirm(text); |
15 |
} |
16 |
|
17 |
function element_id(id) { |
18 |
//debug("id: "+id); |
19 |
if (id_cache[id]) { |
20 |
//debug("from cache "+id+" == "+id_cache[id]); |
21 |
return id_cache[id]; |
22 |
} else { |
23 |
var el = self.document.getElementById(id); |
24 |
//debug("getElementById("+id+") == "+el); |
25 |
if (el) { |
26 |
id_cache[id] = el; |
27 |
return el; |
28 |
} |
29 |
//} else debug("can't find element "+id); |
30 |
} |
31 |
return null; |
32 |
} |
33 |
|
34 |
function toggle_display(name,dont_save) { |
35 |
var el = element_id(name); |
36 |
if (el) { |
37 |
//debug("toggle "+name+" == "+el.id+" current: '"+el.style.display+"'"); |
38 |
|
39 |
if (el.style.display=='none') |
40 |
el.style.display = ''; |
41 |
else |
42 |
el.style.display = 'none'; |
43 |
|
44 |
if (! dont_save) changed_display_ids[changed_display_pos++] = name; |
45 |
} |
46 |
|
47 |
return false; |
48 |
} |
49 |
|
50 |
function default_display() { |
51 |
if (changed_display_pos == 0) return null; |
52 |
|
53 |
for (var i = 0; i < changed_display_pos; i++) { |
54 |
toggle_display( changed_display_ids[i], 1 ); |
55 |
} |
56 |
changed_display_pos = 0; |
57 |
return false; |
58 |
} |
59 |
|
60 |
function back_display() { |
61 |
if (changed_display_pos == 0) { |
62 |
return; |
63 |
} |
64 |
toggle_display( changed_display_ids[--changed_display_pos], 1 ); |
65 |
} |
66 |
|
67 |
function forward_display() { |
68 |
if (changed_display_pos == changed_display_ids.length) { |
69 |
return; |
70 |
} |
71 |
|
72 |
toggle_display( changed_display_ids[changed_display_pos++], 1 ); |
73 |
} |
74 |
|
75 |
function reset_changed() { |
76 |
changed_display_ids.length = 0; |
77 |
changed_display_pos = 0; |
78 |
} |
79 |
|
80 |
function set_display(name,display) { |
81 |
var el = element_id(name); |
82 |
|
83 |
if (el) el.style.display = display |
84 |
else alert("can't set_display("+name+","+display+")"); |
85 |
|
86 |
return false; |
87 |
} |
88 |
|
89 |
function show_display(show) { |
90 |
for (var i = 0; i < show.length; i++) { |
91 |
set_display(show[i],''); |
92 |
} |
93 |
reset_changed(); |
94 |
} |
95 |
|
96 |
function hide_display(hide) { |
97 |
for (var i = 0; i < hide.length; i++) { |
98 |
set_display(hide[i],'none'); |
99 |
} |
100 |
reset_changed(); |
101 |
} |
102 |
|
103 |
function show_hide_display(show,hide) { |
104 |
show_display(show); |
105 |
hide_display(hide); |
106 |
} |
107 |
|
108 |
function outline_display(name) { |
109 |
|
110 |
var el = element_id(name); |
111 |
|
112 |
//debug("outline "+name); |
113 |
|
114 |
if (el) { |
115 |
el.style.backgroundColor = "#ffff66"; |
116 |
//el.style.border = "1px dashed #c0c0c0"; |
117 |
|
118 |
if (el.style.display=='none') toggle_display(el.id); |
119 |
|
120 |
// recursivly show elements to root |
121 |
while (el.parentNode) { |
122 |
el=el.parentNode; |
123 |
if (el.style && el.style.display=='none') toggle_display(el.id); |
124 |
} |
125 |
} |
126 |
} |