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typeahead: Extract `query_matches_string()`.

This commit is contained in:
Harshit Bansal 2018-07-22 09:18:51 +00:00 committed by Tim Abbott
parent a906d564a3
commit fbdc21a161
1 changed files with 32 additions and 28 deletions
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60
static/js/composebox_typeahead.js
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@ -44,6 +44,37 @@ function query_matches_language(query, lang) {
return lang.indexOf(query) !== -1;
}
function query_matches_string(query, source_str, split_char) {
// If query doesn't contain a separator, we just want an exact
// match where query is a substring of one of the target characers.
if (query.indexOf(split_char) > 0) {
// If there's a whitespace character in the query, then we
// require a perfect prefix match (e.g. for 'ab cd ef',
// query needs to be e.g. 'ab c', not 'cd ef' or 'b cd
// ef', etc.).
var queries = query.split(split_char);
var sources = source_str.split(split_char);
var i;
for (i = 0; i < queries.length - 1; i += 1) {
if (sources[i] !== queries[i]) {
return false;
}
}
// This block is effectively a final iteration of the last
// loop. What differs is that for the last word, a
// partial match at the beginning of the word is OK.
if (sources[i] === undefined) {
return false;
}
return sources[i].indexOf(queries[i]) === 0;
}
// For a single token, the match can be anywhere in the string.
return source_str.indexOf(query) !== -1;
}
// This function attempts to match a query with source's attributes.
// * query is the user-entered search query
// * Source is the object we're matching from, e.g. a user object
@ -52,36 +83,9 @@ function query_matches_language(query, lang) {
// account, there might be 2 attrs: their full name and their email.
// * split_char is the separator for this syntax (e.g. ' ').
function query_matches_source_attrs(query, source, match_attrs, split_char) {
// If query doesn't contain a separator, we just want an exact
// match where query is a substring of one of the target characers.
return _.any(match_attrs, function (attr) {
var source_str = source[attr].toLowerCase();
if (query.indexOf(split_char) > 0) {
// If there's a whitespace character in the query, then we
// require a perfect prefix match (e.g. for 'ab cd ef',
// query needs to be e.g. 'ab c', not 'cd ef' or 'b cd
// ef', etc.).
var queries = query.split(split_char);
var sources = source_str.split(split_char);
var i;
for (i = 0; i < queries.length - 1; i += 1) {
if (sources[i] !== queries[i]) {
return false;
}
}
// This block is effectively a final iteration of the last
// loop. What differs is that for the last word, a
// partial match at the beginning of the word is OK.
if (sources[i] === undefined) {
return false;
}
return sources[i].indexOf(queries[i]) === 0;
}
// For a single token, the match can be anywhere in the string.
return source_str.indexOf(query) !== -1;
return query_matches_string(query, source_str, split_char);
});
}