1 files changed, 126 insertions, 0 deletions
diff --git a/app/assets/javascripts/filtered_search/dropdown_utils.js b/app/assets/javascripts/filtered_search/dropdown_utils.js
new file mode 100644
index 00000000000..de3fa116717
--- /dev/null
+++ b/app/assets/javascripts/filtered_search/dropdown_utils.js
@@ -0,0 +1,126 @@
+(() => {
+  class DropdownUtils {
+    static getEscapedText(text) {
+      let escapedText = text;
+      const hasSpace = text.indexOf(' ') !== -1;
+      const hasDoubleQuote = text.indexOf('"') !== -1;
+
+      // Encapsulate value with quotes if it has spaces
+      // Known side effect: values's with both single and double quotes
+      // won't escape properly
+      if (hasSpace) {
+        if (hasDoubleQuote) {
+          escapedText = `'${text}'`;
+        } else {
+          // Encapsulate singleQuotes or if it hasSpace
+          escapedText = `"${text}"`;
+        }
+      }
+
+      return escapedText;
+    }
+
+    static filterWithSymbol(filterSymbol, input, item) {
+      const updatedItem = item;
+      const query = gl.DropdownUtils.getSearchInput(input);
+      const { lastToken, searchToken } = gl.FilteredSearchTokenizer.processTokens(query);
+
+      if (lastToken !== searchToken) {
+        const title = updatedItem.title.toLowerCase();
+        let value = lastToken.value.toLowerCase();
+
+        // Removes the first character if it is a quotation so that we can search
+        // with multiple words
+        if ((value[0] === '"' || value[0] === '\'') && title.indexOf(' ') !== -1) {
+          value = value.slice(1);
+        }
+
+        // Eg. filterSymbol = ~ for labels
+        const matchWithoutSymbol = lastToken.symbol === filterSymbol && title.indexOf(value) !== -1;
+        const match = title.indexOf(`${lastToken.symbol}${value}`) !== -1;
+
+        updatedItem.droplab_hidden = !match && !matchWithoutSymbol;
+      } else {
+        updatedItem.droplab_hidden = false;
+      }
+
+      return updatedItem;
+    }
+
+    static filterHint(input, item) {
+      const updatedItem = item;
+      const query = gl.DropdownUtils.getSearchInput(input);
+      let { lastToken } = gl.FilteredSearchTokenizer.processTokens(query);
+      lastToken = lastToken.key || lastToken || '';
+
+      if (!lastToken || query.split('').last() === ' ') {
+        updatedItem.droplab_hidden = false;
+      } else if (lastToken) {
+        const split = lastToken.split(':');
+        const tokenName = split[0].split(' ').last();
+
+        const match = updatedItem.hint.indexOf(tokenName.toLowerCase()) === -1;
+        updatedItem.droplab_hidden = tokenName ? match : false;
+      }
+
+      return updatedItem;
+    }
+
+    static setDataValueIfSelected(filter, selected) {
+      const dataValue = selected.getAttribute('data-value');
+
+      if (dataValue) {
+        gl.FilteredSearchDropdownManager.addWordToInput(filter, dataValue);
+      }
+
+      // Return boolean based on whether it was set
+      return dataValue !== null;
+    }
+
+    static getSearchInput(filteredSearchInput) {
+      const inputValue = filteredSearchInput.value;
+      const { right } = gl.DropdownUtils.getInputSelectionPosition(filteredSearchInput);
+
+      return inputValue.slice(0, right);
+    }
+
+    static getInputSelectionPosition(input) {
+      const selectionStart = input.selectionStart;
+      let inputValue = input.value;
+      // Replace all spaces inside quote marks with underscores
+      // (will continue to match entire string until an end quote is found if any)
+      // This helps with matching the beginning & end of a token:key
+      inputValue = inputValue.replace(/(('[^']*'{0,1})|("[^"]*"{0,1})|:\s+)/g, str => str.replace(/\s/g, '_'));
+
+      // Get the right position for the word selected
+      // Regex matches first space
+      let right = inputValue.slice(selectionStart).search(/\s/);
+
+      if (right >= 0) {
+        right += selectionStart;
+      } else if (right < 0) {
+        right = inputValue.length;
+      }
+
+      // Get the left position for the word selected
+      // Regex matches last non-whitespace character
+      let left = inputValue.slice(0, right).search(/\S+$/);
+
+      if (selectionStart === 0) {
+        left = 0;
+      } else if (selectionStart === inputValue.length && left < 0) {
+        left = inputValue.length;
+      } else if (left < 0) {
+        left = selectionStart;
+      }
+
+      return {
+        left,
+        right,
+      };
+    }
+  }
+
+  window.gl = window.gl || {};
+  gl.DropdownUtils = DropdownUtils;
+})();