Throttles selection match finding, render throttling now configurable

lib/ui/Editor.js

@@ -7,6 +7,7 @@ var fs = Promise.promisifyAll(require('fs'));
 var extname = require('path').extname;
 var chardet = Promise.promisifyAll(require('chardet'));
 var iconv = require('iconv-lite');
+var lodash = require('lodash');
 
 var Slap = require('./Slap');
 var BaseElement = require('./BaseElement');
@@ -791,7 +792,7 @@ Editor.prototype._initHandlers = function () {
   });
 
   ['cursor', 'startSelection'].forEach(function (evt) {
-    self.on(evt, function () {
+    self.on(evt, lodash.throttle(function () {
       if (self.screen.focused === self) {
         var selection = self.select();
         var line = self.line(selection.end.y);
@@ -804,7 +805,7 @@ Editor.prototype._initHandlers = function () {
           : [];
         self.screen.render();
       }
-    });
+    }, self.options.perf.matchesRenderThrottle));
   });
 
   self.on('path', function (path) { self.language(extname(path).slice(1)); });

lib/ui/Slap.js

@@ -32,6 +32,10 @@ function Slap (opts) {
   self.fileBrowser.focus();
 
   self.toggleInsertMode();
+
+  self.render = lodash.throttle(function () {
+    return blessed.Screen.prototype.render.apply(self, arguments);
+  }, self.options.perf.renderThrottle);
 }
 Slap.prototype.__proto__ = blessed.Screen.prototype;
 Slap.global = null;
@@ -205,10 +209,6 @@ Slap.prototype._initHandlers = function () {
   return BaseElement.prototype._initHandlers.apply(self, arguments);
 };
 
-Slap.prototype.render = lodash.throttle(function () {
-  return blessed.Screen.prototype.render.apply(this, arguments);
-}, 33);
-
 module.exports = Slap;
 
 // circular imports

slap.ini

@@ -42,9 +42,6 @@ bottom = 0
 [logger]
 level = "info"
 
-[perf]
-profile = false
-
 ;;;;;;;;;;;;
 ; Bindings ;
 ;;;;;;;;;;;;
@@ -260,3 +257,13 @@ bg = "yellow"
 
 [button.danger.style.hover]
 bg = "red"
+
+;;;;;;;;;;;;;;;;;;;;;;
+; Performance tweaks ;
+;;;;;;;;;;;;;;;;;;;;;;
+[perf]
+profile = false
+renderThrottle = 50
+
+[editor.perf]
+matchesRenderThrottle = 150