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frontend/node_modules/rc-mentions/es/util.js

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+/**
+ * Cut input selection into 2 part and return text before selection start
+ */
+export function getBeforeSelectionText(input) {
+  var selectionStart = input.selectionStart;
+  return input.value.slice(0, selectionStart);
+}
+/**
+ * Find the last match prefix index
+ */
+export function getLastMeasureIndex(text, prefix) {
+  return prefix.reduce(function (lastMatch, prefixStr) {
+    var lastIndex = text.lastIndexOf(prefixStr);
+    if (lastIndex > lastMatch.location) {
+      return {
+        location: lastIndex,
+        prefix: prefixStr
+      };
+    }
+    return lastMatch;
+  }, {
+    location: -1,
+    prefix: ''
+  });
+}
+function lower(char) {
+  return (char || '').toLowerCase();
+}
+function reduceText(text, targetText, split) {
+  var firstChar = text[0];
+  if (!firstChar || firstChar === split) {
+    return text;
+  }
+
+  // Reuse rest text as it can
+  var restText = text;
+  var targetTextLen = targetText.length;
+  for (var i = 0; i < targetTextLen; i += 1) {
+    if (lower(restText[i]) !== lower(targetText[i])) {
+      restText = restText.slice(i);
+      break;
+    } else if (i === targetTextLen - 1) {
+      restText = restText.slice(targetTextLen);
+    }
+  }
+  return restText;
+}
+
+/**
+ * Paint targetText into current text:
+ *  text: little@litest
+ *  targetText: light
+ *  => little @light test
+ */
+export function replaceWithMeasure(text, measureConfig) {
+  var measureLocation = measureConfig.measureLocation,
+    prefix = measureConfig.prefix,
+    targetText = measureConfig.targetText,
+    selectionStart = measureConfig.selectionStart,
+    split = measureConfig.split;
+
+  // Before text will append one space if have other text
+  var beforeMeasureText = text.slice(0, measureLocation);
+  if (beforeMeasureText[beforeMeasureText.length - split.length] === split) {
+    beforeMeasureText = beforeMeasureText.slice(0, beforeMeasureText.length - split.length);
+  }
+  if (beforeMeasureText) {
+    beforeMeasureText = "".concat(beforeMeasureText).concat(split);
+  }
+
+  // Cut duplicate string with current targetText
+  var restText = reduceText(text.slice(selectionStart), targetText.slice(selectionStart - measureLocation - prefix.length), split);
+  if (restText.slice(0, split.length) === split) {
+    restText = restText.slice(split.length);
+  }
+  var connectedStartText = "".concat(beforeMeasureText).concat(prefix).concat(targetText).concat(split);
+  return {
+    text: "".concat(connectedStartText).concat(restText),
+    selectionLocation: connectedStartText.length
+  };
+}
+export function setInputSelection(input, location) {
+  input.setSelectionRange(location, location);
+
+  /**
+   * Reset caret into view.
+   * Since this function always called by user control, it's safe to focus element.
+   */
+  input.blur();
+  input.focus();
+}
+export function validateSearch(text, split) {
+  return !split || text.indexOf(split) === -1;
+}
+export function filterOption(input, _ref) {
+  var _ref$value = _ref.value,
+    value = _ref$value === void 0 ? '' : _ref$value;
+  var lowerCase = input.toLowerCase();
+  return value.toLowerCase().indexOf(lowerCase) !== -1;
+}