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/*
Jappix - An open social platform
These are the autocompletion tools JS script for Jappix
-------------------------------------------------
License: AGPL
Author: Valérian Saliou
*/
// Bundle
var Autocompletion = (function () {
/**
* Alias of this
* @private
*/
var self = {};
/**
* Sort an autocompletion result array with insensitivity to the case,
* using the 1st elements (a[0] and b[0]) to process comparison
* @public
* @param {array} a
* @param {array} b
* @return {undefined}
*/
self.caseInsensitiveSort = function(a, b) {
try {
// Put the two strings into lower case
var sort_a = a[0].toLowerCase();
var sort_b = b[0].toLowerCase();
// Process the sort
if(sort_a > sort_b) {
return 1;
}
if(sort_a < sort_b) {
return -1;
}
} catch(e) {
Console.error('Autocompletion.caseInsensitiveSort', e);
}
};
/**
* Split a query into its subqueries ready to be used in autocompletion
* @public
* @param {string} query
* @return {object}
*/
self.getSubQueries = function(query) {
var result = [];
try {
var subqueries = [];
var remnants = [];
var query_last_char_pos = query.length - 1;
var space_counter = 0;
var cur_char;
for(var i = query_last_char_pos; i >= 0; i--) {
// Search from the end of the query
cur_char = query.charAt(i);
if(space_counter === 0 && cur_char.search(/\s/) === 0) {
// The first "local" space was found
// Add the subquery and its remnant to results
subqueries.push(query.slice(i+1));
remnants.push(query.slice(0, i+1));
space_counter++;
} else {
space_counter = 0;
}
}
if(space_counter === 0) {
// If the first char of the query is not a space, add the full query to results
subqueries.push(query);
remnants.push('');
}
result = [subqueries, remnants];
} catch(e) {
Console.error('Autocompletion.getSubQueries', e);
} finally {
return result;
}
};
/**
* Creates an array with the autocompletion results. An autocompletion result
* is an array containing the result himself and the rank of the query which
* matched this answer
* @public
* @param {Array} query
* @param {string} id
* @return {Array}
*/
self.process = function(query, id) {
var results = [];
try {
// Replace forbidden characters in regex
query = Common.escapeRegex(query);
// Build an array of regex to use
var query_reg_exp = [];
for(i = 0; i < query.length; i++) {
if(query[i] !== null) {
query_reg_exp.push(
new RegExp('(^)' + query[i], 'gi')
);
}
}
// Search in the roster
var nick, regex;
$('#' + id + ' .user').each(function() {
nick = $(this).find('.name').text();
for(i = 0; i < query_reg_exp.length; i++) {
regex = query_reg_exp[i];
if(nick.match(regex)) {
results.push([nick, i]);
}
}
});
// Sort the array
results = results.sort(
self.caseInsensitiveSort
);
} catch(e) {
Console.error('Autocompletion.process', e);
} finally {
return results;
}
};
/**
* Resets the autocompletion tools
* @public
* @param {string} hash
* @return {undefined}
*/
self.reset = function(hash) {
try {
$('#' + hash + ' .message-area').removeAttr('data-autocompletion-pointer')
.removeAttr('data-autocompletion-query');
} catch(e) {
Console.error('Autocompletion.reset', e);
}
};
/**
* Autocompletes the chat input nick
* @public
* @param {string} hash
* @return {undefined}
*/
self.create = function(hash) {
try {
// Initialize
var message_area_sel = $('#' + hash + ' .message-area');
var value = message_area_sel.val();
if(!value) {
self.reset(hash);
}
var query = message_area_sel.attr('data-autocompletion-query');
if(query === undefined) {
// The autocompletion has not been yet launched
query = self.getSubQueries(value);
message_area_sel.attr('data-autocompletion-query', JSON.stringify(query));
} else {
// The autocompletion has already stored a query
query = JSON.parse(query);
}
// Get the pointer
var pointer = message_area_sel.attr('data-autocompletion-pointer');
var i = pointer ? parseInt(pointer, 10) : 0;
// We get the nickname
var nick_result = self.process(query[0], hash)[i];
var nick;
if(nick_result !== undefined) {
nick = nick_result[0];
}
// Shit, this is my nick!
if((nick !== undefined) && (nick.toLowerCase() == Name.getMUCNick(hash).toLowerCase())) {
// Increment
i++;
// Get the next nick
nick_result = self.process(query[0], hash)[i];
if (nick_result !== undefined) {
nick = nick_result[0];
}
}
// We quote the nick
if((nick_result !== undefined) && (nick !== undefined)) {
// Increment
i++;
Utils.quoteMyNick(
hash,
nick,
query[1][nick_result[1]]
);
// Put a pointer
message_area_sel.attr('data-autocompletion-pointer', i);
}
} catch(e) {
Console.error('Autocompletion.create', e);
}
};
/**
* Return class scope
*/
return self;
})();
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