Simple code hints preferences to enable/disable individual/all code hints providers.

src/editor/CodeHintManager.js

@@ -242,18 +242,23 @@ define(function (require, exports, module) {
         CodeHintList        = require("editor/CodeHintList").CodeHintList,
         PreferencesManager  = require("preferences/PreferencesManager");
 
-    var hintProviders   = { "all" : [] },
-        lastChar        = null,
-        sessionProvider = null,
-        sessionEditor   = null,
-        hintList        = null,
-        deferredHints   = null,
-        keyDownEditor   = null;
+    var hintProviders    = { "all" : [] },
+        lastChar         = null,
+        sessionProvider  = null,
+        sessionEditor    = null,
+        hintList         = null,
+        deferredHints    = null,
+        keyDownEditor    = null,
+        codeHintsEnabled = true;
 
 
+    PreferencesManager.definePreference("showCodeHints", "boolean", true);
     PreferencesManager.definePreference("insertHintOnTab", "boolean", false);
 
-
+    PreferencesManager.on("change", "showCodeHints", function () {
+        codeHintsEnabled = PreferencesManager.get("showCodeHints");
+    });
+
     /**
      * Comparator to sort providers from high to low priority
      */
@@ -347,7 +352,15 @@ define(function (require, exports, module) {
      * @return {?Array.<{provider: Object, priority: number}>}
      */
     function _getProvidersForLanguageId(languageId) {
-        return hintProviders[languageId] || hintProviders.all;
+        var providers = hintProviders[languageId] || hintProviders.all;
+
+        // Exclude providers that are explicitly disabled in the preferences.
+        // All code hint providers that do not have their constructor
+        // names listed in the preferences are enabled by default.
+        return providers.filter(function (provider) {
+            var prefKey = "codehint." + provider.provider.constructor.name;
+            return PreferencesManager.get(prefKey) !== false;
+        });
     }
 
     var _beginSession;
@@ -451,6 +464,10 @@ define(function (require, exports, module) {
      * @param {Editor} editor
      */
     _beginSession = function (editor) {
+        if (!codeHintsEnabled) {
+            return;
+        }
+
         // Don't start a session if we have a multiple selection.
         if (editor.getSelections().length > 1) {
             return;

src/extensions/default/JavaScriptCodeHints/main.js

@@ -48,20 +48,42 @@ define(function (require, exports, module) {
         Session              = require("Session"),
         Acorn                = require("thirdparty/acorn/acorn");
 
-    var session      = null,  // object that encapsulates the current session state
-        cachedCursor = null,  // last cursor of the current hinting session
-        cachedHints  = null,  // sorted hints for the current hinting session
-        cachedType   = null,  // describes the lookup type and the object context
-        cachedToken  = null,  // the token used in the current hinting session
-        matcher      = null,  // string matcher for hints
-        ignoreChange;         // can ignore next "change" event if true;
+    var session        = null,  // object that encapsulates the current session state
+        cachedCursor   = null,  // last cursor of the current hinting session
+        cachedHints    = null,  // sorted hints for the current hinting session
+        cachedType     = null,  // describes the lookup type and the object context
+        cachedToken    = null,  // the token used in the current hinting session
+        matcher        = null,  // string matcher for hints
+        jsHintsEnabled = true,  // preference setting to enable/disable the hint session
+        ignoreChange;           // can ignore next "change" event if true;
+
 
     // Define the defaultExclusions which are files that are known to cause Tern to run out of control.
     PreferencesManager.definePreference("jscodehints.defaultExclusions", "array", []);
 
     // This preference controls when Tern will time out when trying to understand files
     PreferencesManager.definePreference("jscodehints.inferenceTimeout", "number", 5000);
 
+    // This preference controls whether to create a session and process all JS files or not.
+    PreferencesManager.definePreference("codehint.JSHints", "boolean", true);
+
+    /**
+     * Check whether any of code hints preferences for JS Code Hints is disabled
+     * @return {boolean} enabled/disabled
+     */
+    function _areHintsEnabled() {
+        return (PreferencesManager.get("codehint.JSHints") !== false) &&
+            (PreferencesManager.get("showCodeHints") !== false);
+    }
+
+    PreferencesManager.on("change", "codehint.JSHints", function () {
+        jsHintsEnabled = _areHintsEnabled();
+    });
+
+    PreferencesManager.on("change", "showCodeHints", function () {
+        jsHintsEnabled = _areHintsEnabled();
+    });
+
     /**
      * Sets the configuration, generally for testing/debugging use.
      * Configuration keys are merged into the current configuration.
@@ -586,6 +608,10 @@ define(function (require, exports, module) {
             // always clean up cached scope and hint info
             resetCachedHintContext();
 
+            if (!jsHintsEnabled) {
+                return;
+            }
+
             if (editor && HintUtils.isSupportedLanguage(LanguageManager.getLanguageForPath(editor.document.file.fullPath).getId())) {
                 initializeSession(editor, previousEditor);
                 $(editor)