author | Dan |
Thu, 07 Feb 2008 07:58:07 -0500 | |
changeset 403 | 2c9745b5c09d |
parent 367 | ee4defc9321a |
child 407 | 35d94240a197 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
2 |
* Auto-completing page/username fields |
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263
d57af0b0302e
Major improvements in the security of the CAPTCHA system (no SQL injection or anything like that); fixed denied form submission due to _af_acting on form object wrongly switched to true
Dan
parents:
184
diff
changeset
|
3 |
* NOTE: A more efficient version of the username field is used for Mozilla browsers. The updated code is in autofill.js. |
1 | 4 |
*/ |
5 |
||
6 |
// The ultimate Javascript app: AJAX auto-completion, which responds to up/down arrow keys, the enter key, and the escape key |
|
7 |
// The idea was pilfered mercilessly from vBulletin, but uses about 8 |
|
8 |
// bytes of vB code. All the rest was coded by me, Mr. Javascript Newbie... |
|
9 |
||
10 |
// ...in about 8 hours. |
|
11 |
// You folks better like this stuff. |
|
12 |
||
13 |
function nameCompleteEventHandler(e) |
|
14 |
{ |
|
15 |
if(!e) e = window.event; |
|
16 |
switch(e.keyCode) |
|
17 |
{ |
|
18 |
case 38: // up |
|
19 |
unSelectMove('up'); |
|
20 |
break; |
|
21 |
case 40: // down |
|
22 |
unSelectMove('down'); |
|
23 |
break; |
|
24 |
case 27: // escape |
|
25 |
case 9: // tab |
|
26 |
destroyUsernameDropdowns(); |
|
27 |
break; |
|
28 |
case 13: // enter |
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29 |
unSelect(); |
|
30 |
break; |
|
31 |
default: return false; break; |
|
32 |
} |
|
33 |
return true; |
|
34 |
} |
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35 |
||
36 |
function unSelectMove(dir) |
|
37 |
{ |
|
38 |
if(submitAuthorized) return false; |
|
39 |
var thediv = document.getElementById(unObjDivCurrentId); |
|
40 |
thetable = thediv.firstChild; |
|
41 |
cel = thetable.firstChild.firstChild; |
|
42 |
d = true; |
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43 |
index = false; |
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44 |
changed = false; |
|
45 |
// Object of the game: extract the username, determine its index in the userlist array, and then color the menu items and set unObjCurrentSelection |
|
46 |
while(d) // Set to false if an exception occurs or if we arrive at our destination |
|
47 |
{ |
|
48 |
//* |
|
49 |
if(!cel) d=false; |
|
50 |
celbak = cel; |
|
51 |
cel = cel.nextSibling; |
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52 |
if(!cel) d=false; |
|
53 |
try { |
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54 |
if(cel.firstChild.nextSibling) html = cel.firstChild.nextSibling.innerHTML; |
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55 |
else html = cel.firstChild.innerHTML; |
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56 |
cel.firstChild.className = 'row1'; |
|
57 |
if(cel.firstChild.nextSibling) cel.firstChild.nextSibling.className = 'row1'; |
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58 |
thename = html.substr(7, html.length-15); |
|
59 |
// FINALLY! we have extracted the username |
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60 |
// Now get its position in the userlist array |
|
61 |
if(thename == unObjCurrentSelection) |
|
62 |
{ |
|
63 |
index = parseInt(in_array(thename, userlist)); |
|
64 |
} |
|
65 |
if(typeof(index) == 'number') |
|
66 |
{ |
|
67 |
if(dir=='down') |
|
68 |
n = index+1; |
|
69 |
else if(dir == 'up') |
|
70 |
n = index - 1; |
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71 |
||
72 |
// Try to trap moving the selection up or down beyond the top of bottom |
|
73 |
if(n > userlist.length-1 || n < 0) |
|
74 |
{ |
|
75 |
cel.firstChild.className = 'row2'; |
|
76 |
if(cel.firstChild.nextSibling) cel.firstChild.nextSibling.className = 'row2'; |
|
77 |
return; |
|
78 |
} |
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79 |
||
80 |
if(dir=='down') no=cel.nextSibling; |
|
81 |
else if(dir=='up') no=cel.previousSibling; |
|
82 |
no.firstChild.className = 'row2'; |
|
83 |
if(no.firstChild.nextSibling) no.firstChild.nextSibling.className = 'row2'; |
|
84 |
if(no.firstChild.id) |
|
85 |
{ |
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86 |
scroll = getScrollOffset() + getHeight(); |
|
87 |
elemht = getElementHeight(no.firstChild.id); |
|
88 |
elemoff = fetch_offset(no.firstChild); |
|
89 |
whereto = elemoff['top'] + elemht; |
|
90 |
if(whereto > scroll) |
|
91 |
{ |
|
92 |
window.location.hash = '#'+no.firstChild.id; |
|
93 |
unObj.focus(); |
|
94 |
} |
|
95 |
} |
|
96 |
cel=cel.nextSibling; |
|
97 |
unObjCurrentSelection = userlist[n]; |
|
98 |
index = false; |
|
99 |
changed = true; |
|
100 |
return; |
|
101 |
} |
|
102 |
} catch(e) { } |
|
103 |
//*/ d = false; |
|
104 |
} |
|
105 |
} |
|
106 |
||
107 |
function unSelect() |
|
108 |
{ |
|
109 |
if(!unObj || submitAuthorized) return false; |
|
110 |
if ( unObjCurrentSelection ) |
|
111 |
unObj.value = unObjCurrentSelection; |
|
112 |
destroyUsernameDropdowns(); |
|
113 |
} |
|
114 |
||
115 |
function in_array(needle, haystack) |
|
116 |
{ |
|
117 |
for(var i in haystack) |
|
118 |
{ |
|
119 |
if(haystack[i] == needle) return i; |
|
120 |
} |
|
121 |
return false; |
|
122 |
} |
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123 |
||
124 |
function ajaxUserNameComplete(o) |
|
125 |
{ |
|
126 |
if(!o) {destroyUsernameDropdowns(); return;} |
|
127 |
if(!o.value) {destroyUsernameDropdowns(); return;} |
|
128 |
if(o.value.length < 3) {destroyUsernameDropdowns(); return;} |
|
129 |
//if(IE) return; // This control doesn't work in IE. Yes, it's true! document.createElement doesn't work. |
|
130 |
if(!o.id) |
|
131 |
{ |
|
132 |
o.id = 'usernametextboxobj_' + Math.floor(Math.random() * 10000000); |
|
133 |
} |
|
134 |
unObj = o; |
|
135 |
o.setAttribute("autocomplete","off"); |
|
136 |
o.onkeyup = function(e, o) { o=unObj; if(!nameCompleteEventHandler(e)) ajaxUserNameComplete(o); } |
|
137 |
val = escape(o.value).replace('+', '%2B'); |
|
138 |
ajaxGet(stdAjaxPrefix+'&_mode=fillusername&name='+val, function() |
|
139 |
{ |
|
140 |
if(ajax.readyState==4) |
|
141 |
{ |
|
142 |
// Determine the appropriate left/top positions, then create a div to use for the drop-down list |
|
143 |
// The trick here is to be able to make the div dynamically destroy itself depending on how far the user's mouse is from it |
|
144 |
destroyUsernameDropdowns(); |
|
145 |
off = fetch_offset(unObj); |
|
146 |
dim = fetch_dimensions(unObj); |
|
147 |
left = off['left']; |
|
148 |
i1 = off['top']; |
|
149 |
i2 = dim['h']; |
|
150 |
var top = 0; |
|
151 |
top = i1 + i2; |
|
152 |
var thediv = document.createElement('div'); |
|
153 |
thediv.className = 'tblholder'; |
|
154 |
thediv.style.marginTop = '0px'; |
|
155 |
thediv.style.position = 'absolute'; |
|
156 |
thediv.style.top = top + 'px'; |
|
157 |
thediv.style.left = left + 'px'; |
|
158 |
thediv.style.zIndex = getHighestZ() + 2; |
|
159 |
id = 'usernamehoverobj_' + Math.floor(Math.random() * 10000000); |
|
160 |
unObjDivCurrentId = id; |
|
161 |
thediv.id = id; |
|
162 |
unObj.onblur = function() { destroyUsernameDropdowns(); } |
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163 |
||
184
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
164 |
var response = String(ajax.responseText) + ' '; |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
165 |
if ( response.substr(0,1) != '{' ) |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
166 |
{ |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
167 |
new messagebox(MB_OK|MB_ICONSTOP, 'Invalid response', 'Invalid or unexpected JSON response from server:<pre>' + ajax.responseText + '</pre>'); |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
168 |
return false; |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
169 |
} |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
170 |
|
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
171 |
response = parseJSON(response); |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
172 |
var errorstring = false; |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
173 |
if ( response.mode == 'error' ) |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
174 |
{ |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
175 |
errorstring = response.error; |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
176 |
} |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
177 |
else |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
178 |
{ |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
179 |
var userlist = response.users_real; |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
180 |
} |
d74ff822acc9
Replaced autocompleting username with a much more efficient algorithm and caching system
Dan
parents:
73
diff
changeset
|
181 |
|
1 | 182 |
if(errorstring) |
183 |
{ |
|
184 |
html = '<span style="color: #555; padding: 4px;">'+errorstring+'</span>'; |
|
185 |
} |
|
186 |
else |
|
187 |
{ |
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367 | 188 |
html = '<table border="0" cellspacing="1" cellpadding="3" style="width: auto;"><tr><th><small>' + $lang.get('user_autofill_heading_suggestions') + '</small></th></tr>'; |
1 | 189 |
cls = 'row2'; |
190 |
unObjCurrentSelection = userlist[0]; |
|
191 |
for(i=0;i<userlist.length;i++) |
|
192 |
{ |
|
193 |
tmpnam = 'listobjnode_'+Math.floor(Math.random() * 10000000); |
|
194 |
html = html + '<tr><td id="'+tmpnam+'" class="'+cls+'" style="cursor: pointer;" onclick="document.getElementById(\''+unObj.id+'\').value=\''+userlist[i]+'\';destroyUsernameDropdowns();"><small>'+userlist[i]+'</small></td></tr>'; |
|
195 |
if(cls=='row2') cls='row1'; |
|
196 |
} |
|
197 |
html = html + '</table>'; |
|
198 |
} |
|
199 |
||
200 |
thediv.innerHTML = html; |
|
201 |
var body = document.getElementsByTagName('body'); |
|
202 |
body = body[0]; |
|
203 |
unSelectMenuOn = true; |
|
204 |
submitAuthorized = false; |
|
205 |
body.appendChild(thediv); |
|
206 |
} |
|
207 |
}); |
|
208 |
} |
|
209 |
||
210 |
function ajaxPageNameComplete(o) |
|
211 |
{ |
|
212 |
if(!o) {destroyUsernameDropdowns(); return;} |
|
213 |
if(!o.value) {destroyUsernameDropdowns(); return;} |
|
214 |
if(o.value.length < 3) {destroyUsernameDropdowns(); return;} |
|
215 |
if(IE) return; // This control doesn't work in IE. Yes, it's true! document.createElement doesn't work. |
|
216 |
if(!o.id) |
|
217 |
{ |
|
218 |
o.id = 'usernametextboxobj_' + Math.floor(Math.random() * 10000000); |
|
219 |
} |
|
220 |
o.setAttribute("autocomplete","off"); |
|
221 |
unObj = o; |
|
222 |
o.onkeyup = function(e, o) { o=unObj; if(!nameCompleteEventHandler(e)) ajaxPageNameComplete(o); } |
|
223 |
val = escape(o.value).replace('+', '%2B'); |
|
224 |
ajaxGet(stdAjaxPrefix+'&_mode=fillpagename&name='+val, function() |
|
225 |
{ |
|
226 |
if(!ajax) return; |
|
227 |
if(ajax.readyState==4) |
|
228 |
{ |
|
229 |
// Determine the appropriate left/top positions, then create a div to use for the drop-down list |
|
230 |
// The trick here is to be able to make the div dynamically destroy itself depending on how far the user's mouse is from it |
|
231 |
destroyUsernameDropdowns(); |
|
232 |
off = fetch_offset(unObj); |
|
233 |
dim = fetch_dimensions(unObj); |
|
234 |
left = off['left']; |
|
235 |
top = off['top'] + dim['h']; |
|
236 |
var thediv = document.createElement('div'); |
|
237 |
thediv.className = 'tblholder'; |
|
238 |
thediv.style.marginTop = '0px'; |
|
239 |
thediv.style.position = 'absolute'; |
|
240 |
thediv.style.top = top + 'px'; |
|
241 |
thediv.style.left = left + 'px'; |
|
242 |
thediv.style.zIndex = getHighestZ() + 2; |
|
243 |
id = 'usernamehoverobj_' + Math.floor(Math.random() * 10000000); |
|
244 |
unObjDivCurrentId = id; |
|
245 |
thediv.id = id; |
|
246 |
||
247 |
eval(ajax.responseText); |
|
248 |
if(errorstring) |
|
249 |
{ |
|
250 |
html = '<span style="color: #555; padding: 4px;">'+errorstring+'</span>'; |
|
251 |
} |
|
252 |
else |
|
253 |
{ |
|
367 | 254 |
html = '<table border="0" cellspacing="1" cellpadding="3" style="width: auto;"><tr><th colspan="2">' + $lang.get('page_autosuggest_heading') + '</th></tr><tr><th><small>' + $lang.get('page_autosuggest_col_name') + '</small></th><th><small>' + $lang.get('page_autosuggest_col_page_id') + '</small></th></tr>'; |
1 | 255 |
cls = 'row2'; |
256 |
unObjCurrentSelection = userlist[0]; |
|
257 |
for(i=0;i<userlist.length;i++) |
|
258 |
{ |
|
259 |
tmpnam = 'listobjnode_'+Math.floor(Math.random() * 10000000); |
|
260 |
html = html + '<tr><td id="'+tmpnam+'" class="'+cls+'" style="cursor: pointer;" onclick="document.getElementById(\''+unObj.id+'\').value=\''+userlist[i]+'\';destroyUsernameDropdowns();"><small>'+namelist[i]+'</small></td><td class="'+cls+'" style="cursor: pointer;" onclick="document.getElementById(\''+unObj.id+'\').value=\''+userlist[i]+'\';destroyUsernameDropdowns();"><small>'+userlist[i]+'</small></td></tr>'; |
|
261 |
if(cls=='row2') cls='row1'; |
|
262 |
} |
|
263 |
html = html + '</table>'; |
|
264 |
} |
|
265 |
||
266 |
thediv.innerHTML = html; |
|
267 |
var body = document.getElementsByTagName('body'); |
|
268 |
body = body[0]; |
|
269 |
unSelectMenuOn = true; |
|
270 |
submitAuthorized = false; |
|
271 |
body.appendChild(thediv); |
|
272 |
} |
|
273 |
}); |
|
274 |
} |
|
275 |
||
276 |
function destroyUsernameDropdowns() |
|
277 |
{ |
|
278 |
var divs = document.getElementsByTagName('div'); |
|
279 |
var prefix = 'usernamehoverobj_'; |
|
280 |
for(i=0;i<divs.length;i++) |
|
281 |
{ |
|
282 |
if ( divs[i].id ) |
|
283 |
{ |
|
284 |
if(divs[i].id.substr(0, prefix.length)==prefix) |
|
285 |
{ |
|
286 |
divs[i].innerHTML = ''; |
|
287 |
divs[i].style.display = 'none'; |
|
288 |
} |
|
289 |
} |
|
290 |
} |
|
291 |
unSelectMenuOn = false; |
|
292 |
unObjDivCurrentId = false; |
|
293 |
unObjCurrentSelection = false; |
|
294 |
submitAuthorized = true; |
|
295 |
} |
|
296 |
||
297 |
function get_parent_form(o) |
|
298 |
{ |
|
299 |
if ( !o.parentNode ) |
|
300 |
return false; |
|
301 |
if ( o.tagName == 'FORM' ) |
|
302 |
return o; |
|
303 |
var p = o.parentNode; |
|
304 |
while(true) |
|
305 |
{ |
|
306 |
if ( p.tagName == 'FORM' ) |
|
307 |
return p; |
|
308 |
else if ( !p ) |
|
309 |
return false; |
|
310 |
else |
|
311 |
p = p.parentNode; |
|
312 |
} |
|
313 |
} |
|
314 |