Cafuego: HotCat installation

2008-11-07T07:28:36Z

HotCat installation

New page

/* Script: [[User:TheDJ/Gadget-HotCat.js]]
* HotCat: Adds an easy way to add, modify and remove categories
* Documentation: [[User:TheDJ/HotCat]]
* Originally written by: Magnus Manske
*
* This version was forked from http://commons.wikimedia.org/w/index.php?title=MediaWiki:Gadget-HotCat.js&oldid=10204404
* Major changes:
* - blacklist code is disabled.
* - all code for the uploadForm has been removed
* - autocommit is disabled
* - will be enabled on pages without categories so that you can easily add them
* - uses javascript:void() as a dummy value for href in order to avoid a conflict with popups.
* - checks for {{Uncategorized}} and removes it if a category is added
* - does not use JSconfig for configuration options like its Commons original
* - tries to detect other categories and if possible, add to the end of them.
* - fixes a bug in the suggestion list with titles containing : character
* - Uses opensearch API to look for categories. Allows for case insensitive search.
* [[User:TheDJ]] 2008-03-12
<source lang="javascript"><nowiki> */
var hotcat_running = 0 ;
var hotcat_last_v = "" ;
var hotcat_exists_yes = "http://upload.wikimedia.org/wikipedia/commons/thumb/b/be/P_yes.svg/20px-P_yes.svg.png" ;
var hotcat_exists_no = "http://upload.wikimedia.org/wikipedia/commons/thumb/4/42/P_no.svg/20px-P_no.svg.png" ;

var hotcat_no_autocommit = 0;
// In Commons hotcat_suggestion_delay is configurable trough JSconfig
var hotcat_suggestion_delay = 100;

var hotcat_old_onsubmit = null;
var hotcat_nosuggestions = false;
// hotcat_nosuggestions is set to true if we don't have XMLHttp! (On IE6, XMLHttp uses
// ActiveX, and the user may deny execution.) If true, no suggestions will ever be
// displayed, and there won't be any checking whether the category exists.
// Lupo, 2008-01-20

var hotcat_modify_blacklist = new Array (
""
) ;

addOnloadHook ( hotcat ) ;

function hotcat () {
if ( hotcat_check_action() ) return ; // Edited page, reloading anyway

// Do not add interface to protected pages, if user has no edit permission
// Also disable it on preview pages: on a preview, we *are* already editing,
// and HotCat must not open the page for editing a second time. Lupo, 2008-02-27
if( wgAction != "view" || document.getElementById('ca-viewsource' ) != null ||
wgNamespaceNumber == -1 || wgNamespaceNumber == 10 )
return;

// If we have no Categories div, then add one
// TheDJ, 2008-02-28

var visible_catlinks = document.getElementById ('mw-normal-catlinks') || getElementsByClassName ( document , "p" , "catlinks" ) [0];
var hidden_catlinks = document.getElementById ('mw-hidden-catlinks');

if ( visible_catlinks == null || typeof( visible_catlinks ) == 'undefined' ) {
d3 = document.createElement ( "div" );
d3.id = "mw-normal-catlinks";
d3.innerHTML = '<a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: ';
visible_catlinks = d3;

if ( hidden_catlinks ) {
// There are hidden categories.
hidden_catlinks.parentNode.insertBefore( d3, hidden_catlinks );
hidden_catlinks.parentNode.className = "catlinks";
} else {
// This page has no categories at all, lets create a section where we can add them.
var footer = getElementsByClassName ( document , "div" , "printfooter" ) [0];
if( !footer ) return; // We have no idea where we should add this.

d1 = document.createElement ( "div" );
d1.id = "catlinks";
d1.className = "catlinks";
d1.appendChild ( d3 );
footer.parentNode.insertBefore( d1, footer.nextSibling );
}
}

hotcat_modify_existing ( visible_catlinks ) ;
hotcat_append_add_span ( visible_catlinks ) ;
}

function hotcat_append_add_span ( catline ) {
var span_add = document.createElement ( "span" ) ;
var span_sep = document.createTextNode ( " | " ) ;
if ( catline.getElementsByTagName("span")[0] ) catline.appendChild ( span_sep ) ;
catline.appendChild ( span_add ) ;
hotcat_create_span ( span_add ) ;
}

String.prototype.ucFirst = function () {
return this.substr(0,1).toUpperCase() + this.substr(1,this.length);
}

function hotcat_is_on_blacklist ( cat_title ) {
if ( !cat_title ) return 0 ;
cat_title = cat_title.ucFirst.replace( /Category:/gi, "" );
for ( var i = 0 ; i < hotcat_modify_blacklist.length ; i++ ) {
if ( cat_title.substr ( 0 , hotcat_modify_blacklist[i].length ) == hotcat_modify_blacklist[i] ) return 1 ;
}
return 0 ;
}

function hotcat_modify_span ( span , i ) {
//var cat_title = span.firstChild.getAttribute ( "title" ) ;
// This fails with MW 1.13alpha if the category is a redlink, because MW 1.13alpha appends
// [[MediaWiki:Red-link-title]] to the category name... it also fails if the category name
// contains "&" (because that is represented by & in the XHTML both in the title and in
// the link's content (innerHTML). Extract the category name from the href instead:
var cat_title = null;
var classes = span.firstChild.getAttribute ('class');
if (classes && classes.search (/\bnew\b/) >= 0) { // href="/w/index.php?title=...&action=edit"
cat_title = hotcatGetParamValue ('title', span.firstChild.href);
} else { // href="/wiki/..."
var re = new RegExp (wgArticlePath.replace (/\$1/, '(.*)'));
var matches = re.exec (span.firstChild.href);
if (matches && matches.length > 1)
cat_title = decodeURIComponent (matches[1]);
else
return;
}
// Strip namespace, replace _ by blank
cat_title = cat_title.substring (cat_title.indexOf (':') + 1).replace (/_/g, ' ');

var sep1 = document.createTextNode ( " " ) ;
var a1 = document.createTextNode ( "(-)" ) ;
var remove_link = document.createElement ( "a" ) ;
// Set the href to a dummy value to make sure we don't move if somehow the onclick handler
// is bypassed.
remove_link.className = "noprint";
remove_link.href = "#catlinks";
remove_link.onclick = hotcat_remove;
remove_link.appendChild ( a1 ) ;
span.appendChild ( sep1 ) ;
span.appendChild ( remove_link ) ;

// Disabled blacklist check TheDJ, 2008-02-28
// if ( hotcat_is_on_blacklist ( cat_title ) ) return ;
var mod_id = "hotcat_modify_" + i ;
var sep2 = document.createTextNode ( " " ) ;
var a2 = document.createTextNode ( "(±)" ) ;
var modify_link = document.createElement ( "a" ) ;
modify_link.id = mod_id ;
modify_link.className = "noprint";
modify_link.href = "javascript:hotcat_modify(\"" + mod_id + "\");" ;
modify_link.appendChild ( a2 ) ;
span.appendChild ( sep2 ) ;
span.appendChild ( modify_link ) ;
span.hotcat_name = cat_title; //Store the extracted category name in our own new property of the span DOM node
}

function hotcat_modify_existing ( catline ) {
var spans = catline.getElementsByTagName ( "span" ) ;
for ( var i = 0 ; i < spans.length ; i++ ) {
hotcat_modify_span ( spans[i] , i ) ;
}
}

function hotcat_getEvt (evt) {
return evt || window.event || window.Event; // Gecko, IE, Netscape
}

function hotcat_evt2node (evt) {
var node = null;
try {
var e = hotcat_getEvt (evt);
node = e.target;
if (!node) node = e.srcElement;
} catch (ex) {
node = null;
}
return node;
}

function hotcat_evtkeys (evt) {
var code = 0;
try {
var e = hotcat_getEvt (evt);
if (typeof(e.ctrlKey) != 'undefined') { // All modern browsers
if (e.ctrlKey) code |= 1;
if (e.shiftKey) code |= 2;
if (e.altKey) code |= 4;
} else if (typeof (e.modifiers) != 'undefined') { // Netscape...
if (e.modifiers & Event.CONTROL_MASK) code |= 1;
if (e.modifiers & Event.SHIFT_MASK) code |= 2;
if (e.modifiers & Event.ALT_MASK) code |= 4;
}
} catch (ex) {
}
return code;
}

function hotcat_killEvt (evt)
{
try {
var e = hotcat_getEvt (evt);
if (typeof (e.preventDefault) != 'undefined') {
e.preventDefault();
e.stopPropagation()
} else
e.cancelBubble = true;
} catch (ex) {
}
}

function hotcat_remove (evt) {
var node = hotcat_evt2node (evt);
if (!node) return false;
// Get the category name from the original link to the category
var cat_title = node.parentNode.hotcat_name;

var editlk = document.getElementById('ca-edit').getElementsByTagName('a')[0].href;
if ((hotcat_evtkeys (evt) & 1) || (hotcat_evtkeys (evt) & 4 )) // CTRL or ALT pressed?
editlk = editlk + '&hotcat_nocommit=1';
hotcat_killEvt (evt);
document.location = editlk + '&hotcat_removecat=' + encodeURIComponent(cat_title) ;
return false;
}

function hotcatGetParamValue(paramName, h) {
if (typeof h == 'undefined' ) { h = document.location.href; }
var cmdRe=RegExp('[&?]'+paramName+'=([^&]*)');
var m=cmdRe.exec(h);
if (m) {
try {
return decodeURIComponent(m[1]);
} catch (someError) {}
}
return null;
}

// New. Code by Lupo & Superm401, added by Lupo, 2008-02-2007
function hotcat_find_category (wikitext, category)
{
var cat_name = category.replace(/([\\\^\$\.\?\*\+])/g, "\\$1");
var initial = cat_name.substr (0, 1);
var cat_regex = new RegExp ("\\[\\[\\s*[Cc]ategory\\s*:\\s*"
+ (initial == "\\"
? initial
: "[" + initial.toUpperCase() + initial.toLowerCase() + "]")
+ cat_name.substring (1).replace (/[ _]/g, "[ _]")
+ "\\s*(\\|.*?)?\\]\\]", "g"
);
var result = new Array ();
var curr_match = null;
while ((curr_match = cat_regex.exec (wikitext)) != null) {
result [result.length] = {match : curr_match};
}
return result; // An array containing all matches, with positions, in result[i].match
}

// New. Code by TheDJ, 2008-03-12
function hotcat_find_ins ( wikitext )
{
var re = /\[\[(?:Category):[^\]]+\]\]/ig
var index = -1;
while( re.exec(wikitext) != null ) index = re.lastIndex;

if( index > -1) return index;
//we should try to find interwiki links here, but that's for later.

return -1;
}

// Rewritten (nearly) from scratch. Lupo, 2008-02-27
function hotcat_check_action () {
var ret = 0;
if (wgAction != 'edit' || typeof(document.editform) == "undefined" ) return ret; // Not an edit page, so not our business...
var summary = new Array () ;
var t = document.editform.wpTextbox1.value ;
var prevent_autocommit = 0;
if ( (typeof (hotcat_no_autocommit) != "undefined" && hotcat_no_autocommit)
|| hotcatGetParamValue ('hotcat_nocommit') == '1')
prevent_autocommit = 1;

var cat_rm = hotcatGetParamValue ('hotcat_removecat');
var cat_add = hotcatGetParamValue ('hotcat_newcat');
var comment = hotcatGetParamValue ('hotcat_comment') || "";

var cat_key = null;
if (cat_rm != null && cat_rm.length > 0) {
var matches = hotcat_find_category (t, cat_rm);
if (!matches || matches.length == 0) {
alert ('Category "' + cat_rm + '" not found; maybe it is in a template?');
prevent_autocommit = 1;
} else if (matches.length > 1) {
alert ('Category "' + cat_rm
+ "\" found several times; don't know which occurrence to remove.");
prevent_autocommit = 1;
} else {
if (cat_add != null && cat_add.length > 0 && matches[0].match.length > 1)
cat_key = matches[0].match[1]; // Remember the category key, if any.
var t1 = t.substring (0, matches[0].match.index);
var t2 = t.substring (matches[0].match.index + matches[0].match[0].length);
// Remove whitespace (properly): strip whitespace, but only up to the next line feed.
// If we then have two linefeeds in a row, remove one. Otherwise, if we have two non-
// whitespace characters, insert a blank.
var i = t1.length - 1;
while (i >= 0 && t1.charAt (i) != '\n' && t1.substr (i, 1).search (/\s/) >= 0) i--;
var j = 0;
while (j < t2.length && t2.charAt (j) != '\n' && t1.substr (j, 1).search (/\s/) >= 0) j++;
if (i >= 0 && t1.charAt (i) == '\n' && j < t2.length && t2.charAt (j) == '\n')
i--;
if (i >= 0) t1 = t1.substring (0, i+1); else t1 = "";
if (j < t2.length) t2 = t2.substring (j); else t2 = "";
if (t1.length > 0 && t1.substring (t1.length - 1).search (/\S/) >= 0
&& t2.length > 0 && t2.substr (0, 1).search (/\S/) >= 0)
t1 = t1 + ' ';
t = t1 + t2;
summary.push ( "Removed category \"" + cat_rm + "\"" ) ;
ret = 1;
}
}
if (cat_add != null && cat_add.length > 0) {
var matches = hotcat_find_category (t, cat_add);
if (matches && matches.length > 0) {
alert ('Category "' + cat_add + '" already exists; not added.');
prevent_autocommit = 1;
} else {
var insertionpoint = hotcat_find_ins( t );
var newcatstring = '\n\[\[Category:' + cat_add + (cat_key != null ? cat_key : "") + '\]\]';
if( insertionpoint > -1 ) {
t = t.substring(0, insertionpoint ) + newcatstring + t.substring( insertionpoint );
} else {
t = t + newcatstring;
}
summary.push ( "Quick-adding category \"" + cat_add + "\"" + comment) ;
var t2 = t.replace(/\{\{[Uu]ncategorized[^}]*\}\}/g, ""); // Remove "uncategorized" template
if (t2.length != t.length) {
t = t2;
summary.push ( "removed {{uncategorized}}" ) ;
}
ret = 1;
}
}
if (ret) {
document.editform.wpTextbox1.value = t ;
document.editform.wpSummary.value = summary.join( "; " )
+ " (using [[WP:HOTCAT|HotCat]])" ;
document.editform.wpMinoredit.checked = true ;
if (!prevent_autocommit) {
// Hide the entire edit section so as not to tempt the user into editing...
var bodyContentId = document.getElementById("bodyContent") || document.getElementById("mw_contentholder");
bodyContentId.style.display = "none";
document.editform.submit();
}
}
return ret;
}

function hotcat_clear_span ( span_add ) {
while ( span_add.firstChild ) span_add.removeChild ( span_add.firstChild ) ;
}

function hotcat_create_span ( span_add ) {
hotcat_clear_span ( span_add ) ;
var a_add = document.createElement ( "a" ) ;
var a_text = document.createTextNode ( "(+)" ) ;
span_add.id = "hotcat_add" ;
a_add.className = "noprint";
a_add.href = "javascript:hotcat_add_new()" ;
a_add.appendChild ( a_text ) ;
span_add.appendChild ( a_add ) ;
}

function hotcat_modify ( link_id ) {
var link = document.getElementById ( link_id ) ;
var span = link.parentNode ;
var catname = span.hotcat_name;

while ( span.firstChild.nextSibling ) span.removeChild ( span.firstChild.nextSibling ) ;
span.firstChild.style.display = "none" ;
hotcat_create_new_span ( span , catname ) ;
hotcat_last_v = "" ;
hotcat_text_changed () ; // Update icon
}

function hotcat_add_new () {
var span_add = document.getElementById ( "hotcat_add" ) ;
hotcat_clear_span ( span_add ) ;
hotcat_last_v = "" ;
hotcat_create_new_span ( span_add , "" ) ;
}

function hotcat_create_new_span ( thespan , init_text ) {
var form = document.createElement ( "form" ) ;
form.method = "post" ;
form.onsubmit = function () { hotcat_ok(); return false; } ;
form.id = "hotcat_form" ;
form.style.display = "inline" ;

var list = null;

if (!hotcat_nosuggestions) {
// Only do this if we may actually use XMLHttp...
list = document.createElement ( "select" ) ;
list.id = "hotcat_list" ;
list.onclick = function ()
{
var l = document.getElementById("hotcat_list");
if (l != null)
document.getElementById("hotcat_text").value = l.options[l.selectedIndex].text;
hotcat_text_changed();
};
list.ondblclick = function (evt)
{
var l = document.getElementById("hotcat_list");
if (l != null)
document.getElementById("hotcat_text").value = l.options[l.selectedIndex].text;
// Don't call text_changed here if on upload form: hotcat_ok will remove the list
// anyway, so we must not ask for new suggestions since show_suggestions might
// raise an exception if it tried to show a no longer existing list.
// Lupo, 2008-01-20
hotcat_text_changed();
hotcat_ok((hotcat_evtkeys (evt) & 1) || (hotcat_evtkeys (evt) & 4)); // CTRL or ALT pressed?
};
list.style.display = "none" ;
}

var text = document.createElement ( "input" ) ;
text.size = 40 ;
text.id = "hotcat_text" ;
text.type = "text" ;
text.value = init_text ;
text.onkeyup = function () { window.setTimeout("hotcat_text_changed();", hotcat_suggestion_delay ); } ;

var exists = null;
if (!hotcat_nosuggestions) {
exists = document.createElement ( "img" ) ;
exists.id = "hotcat_exists" ;
exists.src = hotcat_exists_no ;
}

var OK = document.createElement ( "input" ) ;
OK.type = "button" ;
OK.value = "OK" ;
OK.onclick = function (evt) { hotcat_ok ((hotcat_evtkeys (evt) & 1) || (hotcat_evtkeys (evt) & 4)); }; // CTRL or ALT pressed?

var cancel = document.createElement ( "input" ) ;
cancel.type = "button" ;
cancel.value = "Cancel" ;
cancel.onclick = hotcat_cancel ;

if (list != null) form.appendChild ( list ) ;
form.appendChild ( text ) ;
if (exists != null) form.appendChild ( exists ) ;
form.appendChild ( OK ) ;
form.appendChild ( cancel ) ;
thespan.appendChild ( form ) ;
text.focus () ;
}

function hotcat_ok (nocommit) {
var text = document.getElementById ( "hotcat_text" ) ;
var v = text.value || "";
v = v.replace(/_/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, ''); // Trim leading and trailing blanks

// Empty category ?
if (!v) {
hotcat_cancel() ;
return ;
}

// Get the links and the categories of the chosen category page
var url = wgServer + wgScriptPath + '/api.php?action=query&titles='
+ encodeURIComponent ('Category:' + v)
+ '&prop=info|links|categories&plnamespace=14&format=json&callback=hotcat_json_resolve';
var request = sajax_init_object() ;
if (request == null) {
//Oops! We don't have XMLHttp...
hotcat_nosuggestions = true;
hotcat_closeform (nocommit);
hotcat_running = 0;
return;
}
request.open ('GET', url, true);
request.onreadystatechange =
function () {
if (request.readyState != 4) return;
if (request.status != 200) {
hotcat_closeform (nocommit);
} else {
var do_submit = eval (request.responseText);
var txt = document.getElementById ('hotcat_text');
if (do_submit) {
hotcat_closeform (
nocommit
,(txt && txt.value != v) ? " (redirect \[\[:Category:" + v + "|" + v + "\]\] resolved)" : null
);
}
}
};
request.setRequestHeader ('Pragma', 'cache=yes');
request.setRequestHeader ('Cache-Control', 'no-transform');
request.send (null);
}

function hotcat_json_resolve (params)
{
function resolve (page)
{
var cats = page.categories;
var is_dab = false;
var is_redir = typeof (page.redirect) == 'string'; // Hard redirect?
if (!is_redir && cats) {
for (var c = 0; c < cats.length; c++) {
var cat = cats[c]["title"];
if (cat) cat = cat.substring (cat.indexOf (':') + 1); // Strip namespace prefix
if (cat == 'Disambiguation') {
is_dab = true; break;
} else if (cat == 'Category_redirects' || cat == 'Category redirects') {
is_redir = true; break;
}
}
}
if (!is_redir && !is_dab) return true;
var lks = page.links;
var titles = new Array ();
for (i = 0; i < lks.length; i++) {
if ( lks[i]["ns"] == 14 // Category namespace
&& lks[i]["title"] && lks[i]["title"].length > 0) { // Name not empty
// Internal link to existing thingy. Extract the page name.
var match = lks[i]["title"];
// Remove the category prefix
match = match.substring (match.indexOf (':') + 1);
titles.push (match);
if (is_redir) break;
}
}
if (titles.length > 1) {
// Disambiguation page
hotcat_show_suggestions (titles);
return false;
} else if (titles.length == 1) {
var text = document.getElementById ("hotcat_text");
if (text) text.value = titles[0];
}
return true;
} // end local function resolve

// We should have at most one page here
for (var page in params.query.pages) return resolve (params.query.pages[page]);
return true; // In case we have none.
}

function hotcat_closeform (nocommit, comment)
{
var text = document.getElementById ( "hotcat_text" ) ;
var v = text.value || "";
v = v.replace(/_/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, ''); // Trim leading and trailing blanks
if (!v // Empty
|| wgNamespaceNumber == 14 && v == wgTitle // Self-reference
|| text.parentNode.parentNode.id != 'hotcat_add' // Modifying, but
&& text.parentNode.parentNode.hotcat_name == v) // name unchanged
{
hotcat_cancel ();
return;
}

var editlk = document.getElementById('ca-edit').getElementsByTagName('a')[0].href;
var url = editlk + '&hotcat_newcat=' + encodeURIComponent( v ) ;

// Editing existing?
var span = text.parentNode.parentNode ; // span.form.text
if ( span.id != "hotcat_add" ) { // Not plain "addition"
url += '&hotcat_removecat=' + encodeURIComponent (span.hotcat_name);
}
if (nocommit) url = url + '&hotcat_nocommit=1';
if (comment) url = url + '&hotcat_comment=' + encodeURIComponent (comment);
// Make the list disappear:
var list = document.getElementById ( "hotcat_list" ) ;
if (list) list.style.display = 'none';

document.location = url ;
}

function hotcat_just_add ( text ) {
var span = document.getElementById("hotcat_form") ;
while ( span.tagName != "SPAN" ) span = span.parentNode ;
var add = 0 ;
if ( span.id == "hotcat_add" ) add = 1 ;
span.id = "" ;
while ( span.firstChild ) span.removeChild ( span.firstChild ) ;
var na = document.createElement ( "a" ) ;
na.href = wgArticlePath.split("$1").join("Category:" + encodeURI (text)) ;
na.appendChild ( document.createTextNode ( text ) ) ;
na.setAttribute ( "title" , "Category:" + text ) ;
span.appendChild ( na ) ;
var catline = getElementsByClassName ( document , "p" , "catlinks" ) [0] ;
if ( add ) hotcat_append_add_span ( catline ) ;

for ( var i = 0 ; i < span.parentNode.childNodes.length ; i++ ) {
if ( span.parentNode.childNodes[i] != span ) continue ;
hotcat_modify_span ( span , i ) ;
break ;
}
}

function hotcat_cancel () {
var span = document.getElementById("hotcat_form").parentNode ;
if ( span.id == "hotcat_add" ) {
hotcat_create_span ( span ) ;
} else {
while ( span.firstChild.nextSibling ) span.removeChild ( span.firstChild.nextSibling ) ;
span.firstChild.style.display = "" ;
for ( var i = 0 ; i < span.parentNode.childNodes.length ; i++ ) {
if ( span.parentNode.childNodes[i] != span ) continue ;
hotcat_modify_span ( span , i ) ;
break ;
}
}
}

function hotcat_text_changed () {
if ( hotcat_running ) return ;
var text = document.getElementById ( "hotcat_text" ) ;
var v = text.value.ucFirst() ;
if ( hotcat_last_v == v ) return ; // Nothing's changed...

if (hotcat_nosuggestions) {
// On IE, XMLHttp uses ActiveX, and the user may deny execution... just make sure
// the list is not displayed.
var list = document.getElementById ('hotcat_list');
if (list != null) list.style.display = "none" ;
var exists = document.getElementById ('hotcat_exists');
if (exists != null) exists.style.display = "none" ;
return;
}

hotcat_running = 1 ;
hotcat_last_v = v ;

if ( v != "" ) {
var url = wgMWSuggestTemplate.replace("{namespaces}","14")
.replace("{dbname}",wgDBname)
.replace("{searchTerms}",encodeURIComponent(v));
var request = sajax_init_object() ;
if (request == null) {
//Oops! We don't have XMLHttp...
hotcat_nosuggestions = true;
var list = document.getElementById ('hotcat_list');
if (list != null) list.style.display = "none" ;
var exists = document.getElementById ('hotcat_exists');
if (exists != null) exists.style.display = "none" ;
hotcat_running = 0;
return;
}
request.open('GET', url, true);
request.onreadystatechange =
function () {
if (request.readyState == 4) {
try {
eval( "var queryResult="+ request.responseText );
} catch (someError ) {
if( console && console.log )
console.log( "Oh dear, our JSON query went down the drain?\nError: " +someError );
return;
}
var pages = queryResult[1]; // results are *with* namespace here
var titles = new Array();
for ( var i = 0 ; pages && i < pages.length ; i++ ) {
// Remove the namespace. No hardcoding of 'Category:', please, other Wikis may have
// local names ("Kategorie:" on de-WP, for instance). Also don't break on category
// names containing a colon
var s = pages[i].substring (pages[i].indexOf (':') + 1);
if ( s.substr ( 0 , hotcat_last_v.length ).toLowerCase() != hotcat_last_v.toLowerCase() ) break ;
titles.push ( s ) ;
}
hotcat_show_suggestions ( titles ) ;
}
};
request.setRequestHeader ('Pragma', 'cache=yes');
request.setRequestHeader ('Cache-Control', 'no-transform');
request.send(null);
} else {
hotcat_show_suggestions ( new Array () ) ;
}
hotcat_running = 0 ;
}

function hotcat_show_suggestions ( titles ) {
var text = document.getElementById ( "hotcat_text" ) ;
var list = document.getElementById ( "hotcat_list" ) ;
var icon = document.getElementById ( "hotcat_exists" ) ;
// Somehow, after a double click on the selection list, we still get here in IE, but
// the list may no longer exist... Lupo, 2008-01-20
if (list == null) return;
if (hotcat_nosuggestions) {
list.style.display = "none" ;
if (icon != null) icon.style.display = "none";
return;
}
if ( titles.length == 0 ) {
list.style.display = "none" ;
icon.src = hotcat_exists_no ;
return ;
}

// Set list size to minimum of 5 and actual number of titles. Formerly was just 5.
// Lupo, 2008-01-20
list.size = (titles.length > 5 ? 5 : titles.length) ;
// Avoid list height 1: double-click doesn't work in FF. Lupo, 2008-02-27
if (list.size == 1) list.size = 2;
list.style.align = "left" ;
list.style.zIndex = 5 ;
list.style.position = "absolute" ;

// Was listh = titles.length * 20: that makes no sense if titles.length > list.size
// Lupo, 2008-01-20
var listh = list.size * 20;
var nl = parseInt (text.offsetLeft) - 1 ;
var nt = parseInt (text.offsetTop) - listh ;
list.style.top = nt + "px" ;
list.style.width = text.offsetWidth + "px" ;
list.style.height = listh + "px" ;
list.style.left = nl + "px" ;
while ( list.firstChild ) list.removeChild ( list.firstChild ) ;
for ( var i = 0 ; i < titles.length ; i++ ) {
var opt = document.createElement ( "option" ) ;
var ot = document.createTextNode ( titles[i] ) ;
opt.appendChild ( ot ) ;
//opt.value = titles[i] ;
list.appendChild ( opt ) ;
}

icon.src = hotcat_exists_yes ;

var nof_titles = titles.lenght;
var first_title = titles.shift ();
var v = text.value.ucFirst();

text.focus();
if ( first_title == v ) {
if( nof_titles == 1 ) {
// Only one result, and it's the same as whatever is in the input box: makes no sense
// to show the list.
list.style.display = "none";
}
return;
}
list.style.display = "block" ;

// Put the first entry of the title list into the text field, and select the
// new suffix such that it'll be overwritten if the user keeps typing.
// ONLY do this if we have a way to select parts of the content of a text
// field, otherwise, this is very annoying for the user. Note: IE does it
// again differently from the two versions previously implemented.
// Lupo, 2008-01-20
// Only put first entry into the list if the user hasn't typed something
// conflicting yet Dschwen 2008-02-18
if ( ( text.setSelectionRange ||
text.createTextRange ||
typeof (text.selectionStart) != 'undefined' &&
typeof (text.selectionEnd) != 'undefined' ) &&
v == first_title.substr(0,v.length) )
{
// taking hotcat_last_v was a major annoyance,
// since it constantly killed text that was typed in
// _since_ the last AJAX request was fired! Dschwen 2008-02-18
var nosel = v.length ;

text.value = first_title ;

if (text.setSelectionRange) // e.g. khtml
text.setSelectionRange (nosel, first_title.length);
else if (text.createTextRange) { // IE
var new_selection = text.createTextRange();
new_selection.move ("character", nosel);
new_selection.moveEnd ("character", first_title.length - nosel);
new_selection.select();
} else {
text.selectionStart = nosel;
text.selectionEnd = first_title.length;
}
}
}
/* </nowiki></source> */

MediaWiki:Gadget-hotcat.js - Revision history

Cafuego: HotCat installation