luci-app-commands: avoid deprecated XHR() usage

Replace direct usage of deprecated XHR() wrapper with L.request class calls.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

applications/luci-app-commands/ucode/template/commands.ut

@@ -29,15 +29,9 @@
 -%}
 
 <script type="text/javascript">//<![CDATA[
-	var stxhr = new XHR();
-
 	function command_run(ev, id)
 	{
-		var args;
 		var field = document.getElementById(id);
-		if (field)
-			args = encodeURIComponent(field.value);
-
 		var legend = document.getElementById('command-rc-legend');
 		var output = document.getElementById('command-rc-output');
 
@@ -51,31 +45,24 @@
 			legend.parentNode.style.display = 'block';
 			legend.style.display = 'inline';
 
-			stxhr.get(L.url('admin/system/commands/run', id) + (args ? '?args=' + args : ''), null,
-				function(x, st)
-				{
-					if (st)
-					{
+			L.Request.get(L.url('admin/system/commands/run', id), field ? { args: field.value } : null).then(function(reply) {
+				var st = reply.json();
+
 				if (st.binary)
 					st.stdout = '[' + _('Binary data not displayed, download instead.') + ']';
 
-						legend.style.display = 'none';
 				output.innerHTML = String.format(
 					'<pre><strong># %h\n</strong>%h<span style="color:red">%h</span></pre>' +
 					'<div class="alert-message warning">%h (%h %d)</div>',
 					st.command, st.stdout, st.stderr,
 					(st.exitcode == 0) ? _('Command successful') : _('Command failed'),
 					_('Code:'), st.exitcode);
-					}
-					else
-					{
-						legend.style.display = 'none';
+			}).catch(function() {
 				output.innerHTML = '<span class="error">%h</span>'.format(_('Failed to execute command!'));
-					}
-
+			}).finally(function() {
+				legend.style.display = 'none';
 				location.hash = '#output';
-				}
-			);
+			});
 		}
 
 		ev.preventDefault();