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src/components/DropdownFilter.jsx

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+import React, { useState, useRef, useEffect } from 'react';
+import Transition from '../utils/Transition';
+
+function DropdownFilter({
+  align
+}) {
+
+  const [dropdownOpen, setDropdownOpen] = useState(false);
+
+  const trigger = useRef(null);
+  const dropdown = useRef(null);
+
+  // close on click outside
+  useEffect(() => {
+    const clickHandler = ({ target }) => {
+      if (!dropdown.current) return;
+      if (!dropdownOpen || dropdown.current.contains(target) || trigger.current.contains(target)) return;
+      setDropdownOpen(false);
+    };
+    document.addEventListener('click', clickHandler);
+    return () => document.removeEventListener('click', clickHandler);
+  });
+
+  // close if the esc key is pressed
+  useEffect(() => {
+    const keyHandler = ({ keyCode }) => {
+      if (!dropdownOpen || keyCode !== 27) return;
+      setDropdownOpen(false);
+    };
+    document.addEventListener('keydown', keyHandler);
+    return () => document.removeEventListener('keydown', keyHandler);
+  });
+
+  return (
+    <div className="relative inline-flex">
+      <button
+        ref={trigger}
+        className="btn bg-white border-slate-200 hover:border-slate-300 text-slate-500 hover:text-slate-600"
+        aria-haspopup="true"
+        onClick={() => setDropdownOpen(!dropdownOpen)}
+        aria-expanded={dropdownOpen}
+      >
+        <span className="sr-only">Filter</span><wbr />
+        <svg className="w-4 h-4 fill-current" viewBox="0 0 16 16">
+          <path d="M9 15H7a1 1 0 010-2h2a1 1 0 010 2zM11 11H5a1 1 0 010-2h6a1 1 0 010 2zM13 7H3a1 1 0 010-2h10a1 1 0 010 2zM15 3H1a1 1 0 010-2h14a1 1 0 010 2z" />
+        </svg>
+      </button>
+      <Transition
+        show={dropdownOpen}
+        tag="div"
+        className={`origin-top-right z-10 absolute top-full min-w-56 bg-white border border-slate-200 pt-1.5 rounded shadow-lg overflow-hidden mt-1 ${align === 'right' ? 'right-0' : 'left-0'}`}
+        enter="transition ease-out duration-200 transform"
+        enterStart="opacity-0 -translate-y-2"
+        enterEnd="opacity-100 translate-y-0"
+        leave="transition ease-out duration-200"
+        leaveStart="opacity-100"
+        leaveEnd="opacity-0"
+      >
+        <div ref={dropdown}>
+          <div className="text-xs font-semibold text-slate-400 uppercase pt-1.5 pb-2 px-4">Filters</div>
+          <ul className="mb-4">
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Direct VS Indirect</span>
+              </label>
+            </li>
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Real Time Value</span>
+              </label>
+            </li>
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Top Channels</span>
+              </label>
+            </li>
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Sales VS Refunds</span>
+              </label>
+            </li>
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Last Order</span>
+              </label>
+            </li>
+            <li className="py-1 px-3">
+              <label className="flex items-center">
+                <input type="checkbox" className="form-checkbox" />
+                <span className="text-sm font-medium ml-2">Total Spent</span>
+              </label>
+            </li>
+          </ul>
+          <div className="py-2 px-3 border-t border-slate-200 bg-slate-50">
+            <ul className="flex items-center justify-between">
+              <li>
+                <button className="btn-xs bg-white border-slate-200 hover:border-slate-300 text-slate-500 hover:text-slate-600">Clear</button>
+              </li>
+              <li>
+                <button className="btn-xs bg-indigo-500 hover:bg-indigo-600 text-white" onClick={() => setDropdownOpen(false)} onBlur={() => setDropdownOpen(false)}>Apply</button>
+              </li>
+            </ul>
+          </div>
+        </div>
+      </Transition>
+    </div>
+  );
+}
+
+export default DropdownFilter;