FEATURE: search should default scope to current category or user

app/assets/javascripts/discourse/services/search.js.es6

@@ -1,7 +1,7 @@
 import { default as computed, observes } from 'ember-addons/ember-computed-decorators';
 
 export default Ember.Object.extend({
-  searchContextEnabled: false,
+  searchContextEnabled: false, // checkbox to scope search
   searchContext: null,
   term: null,
   highlightTerm: null,

app/assets/javascripts/discourse/widgets/header.js.es6

@@ -172,7 +172,6 @@ export default createWidget('header', {
       searchVisible: false,
       hamburgerVisible: false,
       userVisible: false,
-      contextEnabled: false,
       ringBackdrop: true
     };
 
@@ -192,6 +191,19 @@ export default createWidget('header', {
                                                   flagCount: attrs.flagCount })];
 
     if (state.searchVisible) {
+      const contextType = this.searchContextType();
+
+      if (state.searchContextType !== contextType) {
+        state.contextEnabled = undefined;
+      }
+
+      state.searchContextType = contextType;
+
+      if (state.contextEnabled === undefined) {
+        if (contextType === 'category' || contextType === 'user') {
+          state.contextEnabled = true;
+        }
+      }
       panels.push(this.attach('search-menu', { contextEnabled: state.contextEnabled }));
     } else if (state.hamburgerVisible) {
       panels.push(this.attach('hamburger-menu'));
@@ -318,6 +330,16 @@ export default createWidget('header', {
         }
         break;
     }
+  },
+
+  searchContextType() {
+    const service = this.register.lookup('search-service:main');
+    if (service) {
+      const ctx = service.get('searchContext');
+      if (ctx) {
+        return Ember.get(ctx, 'type');
+      }
+    }
   }
 
 });

app/assets/javascripts/discourse/widgets/search-menu.js.es6

@@ -170,6 +170,7 @@ export default createWidget('search-menu', {
   },
 
   searchContextChanged(enabled) {
+    // This indicates the checkbox has been clicked, NOT that the context has changed.
     searchData.typeFilter = null;
     this.sendWidgetAction('searchMenuContextChanged', enabled);
     searchData.contextEnabled = enabled;

test/javascripts/acceptance/search-test.js.es6

@@ -24,3 +24,26 @@ test("search", (assert) => {
     assert.ok(exists('.search-advanced-options'), 'advanced search is expanded');
   });
 });
+
+test("search scope checkbox", () => {
+  visit("/c/bug");
+  click('#search-button');
+  andThen(() => {
+    ok(exists('.search-context input:checked'), 'scope to category checkbox is checked');
+  });
+  click('#search-button');
+
+  visit("/t/internationalization-localization/280");
+  click('#search-button');
+  andThen(() => {
+    not(exists('.search-context input:checked'), 'scope to topic checkbox is not checked');
+  });
+  click('#search-button');
+
+  visit("/users/eviltrout");
+  click('#search-button');
+  andThen(() => {
+    ok(exists('.search-context input:checked'), 'scope to user checkbox is checked');
+  });
+});
+