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Code Issues Releases Wiki Activity

Deactivate the remarkup autosuggest once text can't match "[[" or "((" rules

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Summary:
See PHI1185, which reports a performance issue with "(" in remarkup in certain contexts.

I can't reproduce the performance issue, but I can reproduce the autosuggester incorrectly remaining active and swallowing return characters.

When the user types `(` or `[`, we wait for a prefix for the `((` (Phurl) or `[[` (Phriction) rules. We currently continue looking for that prefix until a character is entered that explicitly interrupts the search.

For example, typing `(xxx<return>` does not insert a return character, because we're stuck on matching the prefix.

Instead, as soon as the user has entered text that we know won't ever match the prefix, deactivate the autocomplete. We can slightly cheat through this by just looking for at least one character of text, since all prefixes are exactly one character long. If we eventually have some kind of `~~@(xyz)` rule we might need to add a more complicated piece of rejection logic.

Test Plan: Typed `(xxx<return>`, got a return. Used `((` and `[[` autosuggest rules normally. Used `JX.log()` to sanity check that nothing too crazy seems to be happening.

Reviewers: amckinley

Reviewed By: amckinley

Differential Revision: https://secure.phabricator.com/D20365
This commit is contained in:
epriestley 2019-04-01 14:13:36 -07:00
parent cddbe306f9
commit dba1b10720
2 changed files with 15 additions and 8 deletions
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16
resources/celerity/map.php
View file

@ -516,7 +516,7 @@ return array(
'rsrc/js/phui/behavior-phui-timer-control.js' => 'f84bcbf4',
'rsrc/js/phuix/PHUIXActionListView.js' => 'c68f183f',
'rsrc/js/phuix/PHUIXActionView.js' => 'aaa08f3b',
'rsrc/js/phuix/PHUIXAutocomplete.js' => '8f139ef0',
'rsrc/js/phuix/PHUIXAutocomplete.js' => '2fbe234d',
'rsrc/js/phuix/PHUIXButtonView.js' => '55a24e84',
'rsrc/js/phuix/PHUIXDropdownMenu.js' => 'bdce4d78',
'rsrc/js/phuix/PHUIXExample.js' => 'c2c500a7',
@ -872,7 +872,7 @@ return array(
'phui-workpanel-view-css' => '3ae89b20',
'phuix-action-list-view' => 'c68f183f',
'phuix-action-view' => 'aaa08f3b',
'phuix-autocomplete' => '8f139ef0',
'phuix-autocomplete' => '2fbe234d',
'phuix-button-view' => '55a24e84',
'phuix-dropdown-menu' => 'bdce4d78',
'phuix-form-control-view' => '38c1f3fb',
@ -1173,6 +1173,12 @@ return array(
'phuix-autocomplete',
'javelin-mask',
),
'2fbe234d' => array(
'javelin-install',
'javelin-dom',
'phuix-icon-view',
'phabricator-prefab',
),
'308f9fe4' => array(
'javelin-install',
'javelin-util',
@ -1634,12 +1640,6 @@ return array(
'8e2d9a28' => array(
'phui-theme-css',
),
'8f139ef0' => array(
'javelin-install',
'javelin-dom',
'phuix-icon-view',
'phabricator-prefab',
),
'8f959ad0' => array(
'javelin-behavior',
'javelin-dom',

7
webroot/rsrc/js/phuix/PHUIXAutocomplete.js
View file

@ -555,6 +555,13 @@ JX.install('PHUIXAutocomplete', {
if (prefix) {
var pattern = new RegExp(prefix);
if (!trim.match(pattern)) {
// If the prefix pattern can not match the text, deactivate. (This
// check might need to be more careful if we have a more varied
// set of prefixes in the future, but for now they're all a single
// prefix character.)
if (trim.length) {
this._deactivate();
}
return;
}
trim = trim.replace(pattern, '');