1 files changed, 200 insertions, 0 deletions
diff --git a/app/assets/javascripts/filtered_search/filtered_search_visual_tokens.js b/app/assets/javascripts/filtered_search/filtered_search_visual_tokens.js
new file mode 100644
index 00000000000..78b245726ee
--- /dev/null
+++ b/app/assets/javascripts/filtered_search/filtered_search_visual_tokens.js
@@ -0,0 +1,200 @@
+class FilteredSearchVisualTokens {
+  static getLastVisualTokenBeforeInput() {
+    const inputLi = document.querySelector('.input-token');
+    const lastVisualToken = inputLi && inputLi.previousElementSibling;
+
+    return {
+      lastVisualToken,
+      isLastVisualTokenValid: lastVisualToken === null || lastVisualToken.className.indexOf('filtered-search-term') !== -1 || (lastVisualToken && lastVisualToken.querySelector('.value') !== null),
+    };
+  }
+
+  static unselectTokens() {
+    const otherTokens = document.querySelectorAll('.js-visual-token .selectable.selected');
+    [].forEach.call(otherTokens, t => t.classList.remove('selected'));
+  }
+
+  static selectToken(tokenButton) {
+    const selected = tokenButton.classList.contains('selected');
+    FilteredSearchVisualTokens.unselectTokens();
+
+    if (!selected) {
+      tokenButton.classList.add('selected');
+    }
+  }
+
+  static removeSelectedToken() {
+    const selected = document.querySelector('.js-visual-token .selected');
+
+    if (selected) {
+      const li = selected.closest('.js-visual-token');
+      li.parentElement.removeChild(li);
+    }
+  }
+
+  static createVisualTokenElementHTML() {
+    return `
+      <div class="selectable" role="button">
+        <div class="name"></div>
+        <div class="value"></div>
+      </div>
+    `;
+  }
+
+  static addVisualTokenElement(name, value, isSearchTerm) {
+    const li = document.createElement('li');
+    li.classList.add('js-visual-token');
+    li.classList.add(isSearchTerm ? 'filtered-search-term' : 'filtered-search-token');
+
+    if (value) {
+      li.innerHTML = FilteredSearchVisualTokens.createVisualTokenElementHTML();
+      li.querySelector('.value').innerText = value;
+    } else {
+      li.innerHTML = '<div class="name"></div>';
+    }
+    li.querySelector('.name').innerText = name;
+
+    const tokensContainer = document.querySelector('.tokens-container');
+    const input = document.querySelector('.filtered-search');
+    tokensContainer.insertBefore(li, input.parentElement);
+  }
+
+  static addValueToPreviousVisualTokenElement(value) {
+    const { lastVisualToken, isLastVisualTokenValid } =
+      FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+    if (!isLastVisualTokenValid && lastVisualToken.classList.contains('filtered-search-token')) {
+      const name = FilteredSearchVisualTokens.getLastTokenPartial();
+      lastVisualToken.innerHTML = FilteredSearchVisualTokens.createVisualTokenElementHTML();
+      lastVisualToken.querySelector('.name').innerText = name;
+      lastVisualToken.querySelector('.value').innerText = value;
+    }
+  }
+
+  static addFilterVisualToken(tokenName, tokenValue) {
+    const { lastVisualToken, isLastVisualTokenValid }
+      = FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+    const addVisualTokenElement = FilteredSearchVisualTokens.addVisualTokenElement;
+
+    if (isLastVisualTokenValid) {
+      addVisualTokenElement(tokenName, tokenValue);
+    } else {
+      const previousTokenName = lastVisualToken.querySelector('.name').innerText;
+      const tokensContainer = document.querySelector('.tokens-container');
+      tokensContainer.removeChild(lastVisualToken);
+
+      const value = tokenValue || tokenName;
+      addVisualTokenElement(previousTokenName, value);
+    }
+  }
+
+  static addSearchVisualToken(searchTerm) {
+    const { lastVisualToken } = FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+    if (lastVisualToken && lastVisualToken.classList.contains('filtered-search-term')) {
+      lastVisualToken.querySelector('.name').innerText += ` ${searchTerm}`;
+    } else {
+      FilteredSearchVisualTokens.addVisualTokenElement(searchTerm, null, true);
+    }
+  }
+
+  static getLastTokenPartial() {
+    const { lastVisualToken } = FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+    if (!lastVisualToken) return '';
+
+    const value = lastVisualToken.querySelector('.value');
+    const name = lastVisualToken.querySelector('.name');
+
+    const valueText = value ? value.innerText : '';
+    const nameText = name ? name.innerText : '';
+
+    return valueText || nameText;
+  }
+
+  static removeLastTokenPartial() {
+    const { lastVisualToken } = FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+    if (lastVisualToken) {
+      const value = lastVisualToken.querySelector('.value');
+
+      if (value) {
+        const button = lastVisualToken.querySelector('.selectable');
+        button.removeChild(value);
+        lastVisualToken.innerHTML = button.innerHTML;
+      } else {
+        lastVisualToken.closest('.tokens-container').removeChild(lastVisualToken);
+      }
+    }
+  }
+
+  static tokenizeInput() {
+    const input = document.querySelector('.filtered-search');
+    const { isLastVisualTokenValid } =
+      gl.FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+    if (input.value) {
+      if (isLastVisualTokenValid) {
+        gl.FilteredSearchVisualTokens.addSearchVisualToken(input.value);
+      } else {
+        FilteredSearchVisualTokens.addValueToPreviousVisualTokenElement(input.value);
+      }
+
+      input.value = '';
+    }
+  }
+
+  static editToken(token) {
+    const input = document.querySelector('.filtered-search');
+
+    FilteredSearchVisualTokens.tokenizeInput();
+
+    // Replace token with input field
+    const tokenContainer = token.parentElement;
+    const inputLi = input.parentElement;
+    tokenContainer.replaceChild(inputLi, token);
+
+    const name = token.querySelector('.name');
+    const value = token.querySelector('.value');
+
+    if (token.classList.contains('filtered-search-token')) {
+      FilteredSearchVisualTokens.addFilterVisualToken(name.innerText);
+      input.value = value.innerText;
+    } else {
+      // token is a search term
+      input.value = name.innerText;
+    }
+
+    // Opens dropdown
+    const inputEvent = new Event('input');
+    input.dispatchEvent(inputEvent);
+
+    // Adds cursor to input
+    input.focus();
+  }
+
+  static moveInputToTheRight() {
+    const input = document.querySelector('.filtered-search');
+    const inputLi = input.parentElement;
+    const tokenContainer = document.querySelector('.tokens-container');
+
+    if (!tokenContainer.lastElementChild.isEqualNode(inputLi)) {
+      FilteredSearchVisualTokens.tokenizeInput();
+
+      const { isLastVisualTokenValid } =
+        gl.FilteredSearchVisualTokens.getLastVisualTokenBeforeInput();
+
+      if (!isLastVisualTokenValid) {
+        const lastPartial = gl.FilteredSearchVisualTokens.getLastTokenPartial();
+        gl.FilteredSearchVisualTokens.removeLastTokenPartial();
+        gl.FilteredSearchVisualTokens.addSearchVisualToken(lastPartial);
+      }
+
+      tokenContainer.removeChild(inputLi);
+      tokenContainer.appendChild(inputLi);
+    }
+  }
+}
+
+window.gl = window.gl || {};
+gl.FilteredSearchVisualTokens = FilteredSearchVisualTokens;