javascript - ACE change key binding conditionnally -

javascript - ACE change key binding conditionnally -

if user presses down key while custom popup displayed, down event cancelled editor , handled manually. however, if popup disactivated, 'down' key should perform usual.

for that, wrote this:

editor.commands.addcommand({ name: 'nav_down.', bindkey: {win: 'down', mac: 'down'}, exec: function(editor) { if(mypopupisopen()) { // whatever want popup. homecoming false; } else { // leave key. homecoming true; } readonly: true });

unfortunately, can homecoming false or true, result same, capture downwards event, annoying. how can prevent that?

i tried following:

add key binding dom. after that, interaction happen (i.e. cannot capture it). return false or true suggested mutual events not work here.

edit

the solution @a user works well. instead of above command, wrote:

var hashhandler = require("ace/keyboard/hash_handler").hashhandler; keyboardhandler = new hashhandler(); keyboardhandler.addcommand({ name: 'nav_down.', bindkey: {win: 'down', mac: 'down'}, exec: function(editor) { if(mypopupisopen()) { // whatever want popup. homecoming true; // alter here ! true when capture it. } else { // leave key. homecoming false; // alter here ! false when don't capture it. } readonly: true }); editor.keybinding.addkeyboardhandler(keyboardhandler);

in current version ace keeps 1 command each key addcommand phone call removes default binding down.

you can add together new keyboard handler similar autocompletion https://github.com/ajaxorg/ace/blob/v1.1.3/lib/ace/autocomplete.js#l221

var hashhandler = require("ace/keyboard/hash_handler").hashhandler; keyboardhandler = new hashhandler(); keyboardhandler.addcommand(/*add command homecoming false*/) editor.keybinding.addkeyboardhandler(keyboardhandler);

javascript command ace-editor