Prevent visual token dropdown from opening the wrong filter dropdown

app/assets/javascripts/filtered_search/dropdown_utils.js

@@ -80,30 +80,48 @@
     }
 
     // Determines the full search query (visual tokens + input)
-    static getSearchQuery() {
-      const tokensContainer = document.querySelector('.tokens-container');
+    static getSearchQuery(untilInput = false) {
+      const tokens = [].slice.call(document.querySelectorAll('.tokens-container li'));
       const values = [];
 
-      [].forEach.call(tokensContainer.querySelectorAll('.js-visual-token'), (token) => {
-        const name = token.querySelector('.name');
-        const value = token.querySelector('.value');
-        const symbol = value && value.dataset.symbol ? value.dataset.symbol : '';
-        let valueText = '';
+      if (untilInput) {
+        const inputIndex = _.findIndex(tokens, t => t.classList.contains('input-token'));
+        // Add one to include input-token to the tokens array
+        tokens.splice(inputIndex + 1);
+      }
 
-        if (value && value.innerText) {
-          valueText = value.innerText;
-        }
-
-        if (token.className.indexOf('filtered-search-token') !== -1) {
-          values.push(`${name.innerText.toLowerCase()}:${symbol}${valueText}`);
-        } else {
-          values.push(name.innerText);
+      tokens.forEach((token) => {
+        if (token.classList.contains('js-visual-token')) {
+          const name = token.querySelector('.name');
+          const value = token.querySelector('.value');
+          const symbol = value && value.dataset.symbol ? value.dataset.symbol : '';
+          let valueText = '';
+
+          if (value && value.innerText) {
+            valueText = value.innerText;
+          }
+
+          if (token.className.indexOf('filtered-search-token') !== -1) {
+            values.push(`${name.innerText.toLowerCase()}:${symbol}${valueText}`);
+          } else {
+            values.push(name.innerText);
+          }
+        } else if (token.classList.contains('input-token')) {
+          const { isLastVisualTokenValid } =
+            gl.FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+          const input = document.querySelector('.filtered-search');
+          const inputValue = input && input.value;
+
+          if (isLastVisualTokenValid) {
+            values.push(inputValue);
+          } else {
+            const previous = values.pop();
+            values.push(`${previous}${inputValue}`);
+          }
         }
       });
 
-      const input = document.querySelector('.filtered-search');
-      values.push(input && input.value);
-
       return values.join(' ');
     }
 

app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js

@@ -139,7 +139,7 @@
     }
 
     setDropdown() {
-      const query = gl.DropdownUtils.getSearchQuery();
+      const query = gl.DropdownUtils.getSearchQuery(true);
       const { lastToken, searchToken } = this.tokenizer.processTokens(query);
 
       if (this.currentDropdown) {

app/assets/javascripts/filtered_search/filtered_search_manager.js

@@ -363,10 +363,13 @@
 
     tokenChange() {
       const dropdown = this.dropdownManager.mapping[this.dropdownManager.currentDropdown];
-      const currentDropdownRef = dropdown.reference;
 
-      this.setDropdownWrapper();
-      currentDropdownRef.dispatchInputEvent();
+      if (dropdown) {
+        const currentDropdownRef = dropdown.reference;
+
+        this.setDropdownWrapper();
+        currentDropdownRef.dispatchInputEvent();
+      }
     }
   }
 

spec/features/issues/filtered_search/visual_tokens_spec.rb

@@ -242,6 +242,23 @@ describe 'Visual tokens', js: true, feature: true do
     end
   end
 
+  describe 'editing a search term while editing another filter token' do
+    before do
+      input_filtered_search('author assignee:', submit: false)
+      first('.tokens-container .filtered-search-term').double_click
+    end
+
+    it 'opens hint dropdown' do
+      expect(page).to have_css('#js-dropdown-hint', visible: true)
+    end
+
+    it 'opens author dropdown' do
+      find('#js-dropdown-hint .filter-dropdown .filter-dropdown-item', text: 'author').click
+
+      expect(page).to have_css('#js-dropdown-author', visible: true)
+    end
+  end
+
   describe 'add new token after editing existing token' do
     before do
       input_filtered_search('author:@root assignee:none', submit: false)
@@ -319,4 +336,17 @@ describe 'Visual tokens', js: true, feature: true do
       expect(token.find('.name').text).to eq('Author')
     end
   end
+
+  describe 'search using incomplete visual tokens' do
+    before do
+      input_filtered_search('author:@root assignee:none', extra_space: false)
+    end
+
+    it 'tokenizes the search term to complete visual token' do
+      expect_tokens([
+        { name: 'author', value: '@root' },
+        { name: 'assignee', value: 'none' }
+      ])
+    end
+  end
 end

spec/support/filtered_search_helpers.rb

@@ -4,9 +4,14 @@ module FilteredSearchHelpers
   end
 
   # Enables input to be set (similar to copy and paste)
-  def input_filtered_search(search_term, submit: true)
-    # Add an extra space to engage visual tokens
-    filtered_search.set("#{search_term} ")
+  def input_filtered_search(search_term, submit: true, extra_space: true)
+    search = search_term
+    if extra_space
+      # Add an extra space to engage visual tokens
+      search = "#{search_term} "
+    end
+
+    filtered_search.set(search)
 
     if submit
       filtered_search.send_keys(:enter)