From 923eb7cadb47403e978f9f40b60c891cc8be3ed2 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <fabio@manganiello.tech>
Date: Tue, 10 Oct 2023 18:42:41 +0200
Subject: [PATCH] `Autocomplete` is now its own component.

---
 .../src/components/elements/Autocomplete.js   | 128 ---------
 .../src/components/elements/Autocomplete.vue  | 247 ++++++++++++++++++
 .../src/components/panels/Execute/vars.scss   |   1 -
 .../http/webapp/src/style/autocomplete.scss   |  32 ---
 .../http/webapp/src/style/themes/light.scss   |   1 +
 5 files changed, 248 insertions(+), 161 deletions(-)
 delete mode 100644 platypush/backend/http/webapp/src/components/elements/Autocomplete.js
 create mode 100644 platypush/backend/http/webapp/src/components/elements/Autocomplete.vue
 delete mode 100644 platypush/backend/http/webapp/src/style/autocomplete.scss

diff --git a/platypush/backend/http/webapp/src/components/elements/Autocomplete.js b/platypush/backend/http/webapp/src/components/elements/Autocomplete.js
deleted file mode 100644
index 334972b7..00000000
--- a/platypush/backend/http/webapp/src/components/elements/Autocomplete.js
+++ /dev/null
@@ -1,128 +0,0 @@
-function autocomplete(inp, arr, listener) {
-    /*the autocomplete function takes two arguments,
-    the text field element and an array of possible autocompleted values:*/
-    let currentFocus;
-
-    /*execute a function when someone writes in the text field:*/
-    inp.addEventListener("input", function() {
-        let a, b, i, val = this.value;
-        /*close any already open lists of autocompleted values*/
-        closeAllLists();
-        if (!val) {
-          return false;
-        }
-
-        currentFocus = -1;
-
-        /*create a DIV element that will contain the items (values):*/
-        a = document.createElement("DIV");
-        a.setAttribute("id", this.id + "autocomplete-list");
-        a.setAttribute("class", "autocomplete-items");
-
-        /*append the DIV element as a child of the autocomplete container:*/
-        this.parentNode.appendChild(a);
-
-        /*for each item in the array...*/
-        for (i = 0; i < arr.length; i++) {
-            /*check if the item starts with the same letters as the text field value:*/
-            if (arr[i].substr(0, val.length).toUpperCase() === val.toUpperCase()) {
-                /*create a DIV element for each matching element:*/
-                b = document.createElement("DIV");
-                /*make the matching letters bold:*/
-                b.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>";
-                b.innerHTML += arr[i].substr(val.length);
-                /*insert a input field that will hold the current array item's value:*/
-                b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
-                /*execute a function when someone clicks on the item value (DIV element):*/
-                b.addEventListener("click", function(e) {
-                    /*insert the value for the autocomplete text field:*/
-                    inp.value = this.getElementsByTagName("input")[0].value;
-                    /*trigger event listener if any:*/
-                    if (listener) {
-                        listener(e, inp.value);
-                    }
-                    /*close the list of autocompleted values,
-                    (or any other open lists of autocompleted values:*/
-                    closeAllLists();
-                });
-                a.appendChild(b);
-            }
-        }
-    });
-
-    inp.addEventListener("keyup", function(e) {
-        if (["ArrowUp", "ArrowDown", "Tab", "Enter"].indexOf(e.key) >= 0) {
-            e.stopPropagation();
-        }
-
-        if (e.key === "Enter") {
-            this.blur();
-        }
-    });
-
-    /*execute a function presses a key on the keyboard:*/
-    inp.addEventListener("keydown", function(e) {
-        let x = document.getElementById(this.id + "autocomplete-list");
-        if (x) x = x.getElementsByTagName("div");
-        if (e.key === 'ArrowDown' || (e.key === 'Tab' && !e.shiftKey)) {
-            /*If the arrow DOWN key is pressed,
-            increase the currentFocus variable:*/
-            currentFocus++;
-            /*and and make the current item more visible:*/
-            addActive(x);
-            e.preventDefault();
-        } else if (e.key === 'ArrowUp' || (e.key === 'Tab' && e.shiftKey)) { //up
-            /*If the arrow UP key is pressed,
-            decrease the currentFocus variable:*/
-            currentFocus--;
-            /*and and make the current item more visible:*/
-            addActive(x);
-            e.preventDefault();
-        } else if (e.key === 'Enter') {
-            /*If the ENTER key is pressed, prevent the form from being submitted,*/
-            if (currentFocus > -1 && x && x.length) {
-                e.preventDefault();
-                /*and simulate a click on the "active" item:*/
-                x[currentFocus].click();
-                /*and restore the focus on the input element:*/
-                this.focus();
-            }
-        }
-    });
-
-    function addActive(x) {
-        /*a function to classify an item as "active":*/
-        if (!x) return false;
-        /*start by removing the "active" class on all items:*/
-        removeActive(x);
-        if (currentFocus >= x.length) currentFocus = 0;
-        if (currentFocus < 0) currentFocus = (x.length - 1);
-        /*add class "autocomplete-active":*/
-        x[currentFocus].classList.add("autocomplete-active");
-    }
-
-    function removeActive(x) {
-        /*a function to remove the "active" class from all autocomplete items:*/
-        for (let i = 0; i < x.length; i++) {
-            x[i].classList.remove("autocomplete-active");
-        }
-    }
-
-    function closeAllLists(elmnt) {
-        /*close all autocomplete lists in the document,
-        except the one passed as an argument:*/
-        const x = document.getElementsByClassName("autocomplete-items");
-        for (let i = 0; i < x.length; i++) {
-            if (elmnt !== x[i] && elmnt !== inp) {
-                x[i].parentNode.removeChild(x[i]);
-            }
-        }
-    }
-
-    /*execute a function when someone clicks in the document:*/
-    document.addEventListener("click", function (e) {
-        closeAllLists(e.target);
-    });
-}
-
-export default autocomplete;
diff --git a/platypush/backend/http/webapp/src/components/elements/Autocomplete.vue b/platypush/backend/http/webapp/src/components/elements/Autocomplete.vue
new file mode 100644
index 00000000..73f2c728
--- /dev/null
+++ b/platypush/backend/http/webapp/src/components/elements/Autocomplete.vue
@@ -0,0 +1,247 @@
+<template>
+  <div class="autocomplete">
+    <label :text="label">
+      <input
+        type="text"
+        class="input"
+        ref="input" 
+        :placeholder="placeholder"
+        :disabled="disabled"
+        :value="value"
+        @focus="onFocus"
+        @input="onInput"
+        @blur="onInput"
+        @keydown="onInputKeyDown"
+        @keyup="onInputKeyUp"
+       >
+    </label>
+
+    <div class="items" v-if="showItems">
+      <div
+        class="item"
+        :class="{ active: i === curIndex }"
+        :key="item"
+        :data-item="item"
+        v-for="(item, i) in visibleItems"
+        @click="onItemSelect(item)"
+      >
+        <span class="matching">{{ item.substr(0, value.length) }}</span>
+        <span class="normal">{{ item.substr(value.length) }}</span>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+export default {
+  name: "Autocomplete",
+  emits: ["input"],
+  props: {
+    items: {
+      type: Array,
+      required: true,
+    },
+
+    value: {
+      type: String,
+      default: "",
+    },
+
+    disabled: {
+      type: Boolean,
+      default: false,
+    },
+
+    label: {
+      type: String,
+    },
+
+    placeholder: {
+      type: String,
+    },
+
+    showResultsWhenBlank: {
+      type: Boolean,
+      default: false,
+    },
+  },
+
+  data() {
+    return {
+      visible: false,
+      curIndex: -1,
+    }
+  },
+
+  computed: {
+    visibleItems() {
+      const val = this.value.toUpperCase()
+      if (!val?.length)
+        return this.showResultsWhenBlank ? this.items : []
+
+      return this.items.filter(
+        (item) => item.substr(0, val.length).toUpperCase() === val
+      )
+    },
+
+    showItems() {
+      return this.visible && this.items?.length
+    },
+  },
+
+  methods: {
+    selectNextItem() {
+      this.curIndex++
+      this.normalizeIndex()
+    },
+
+    selectPrevItem() {
+      this.curIndex--
+      this.normalizeIndex()
+    },
+
+    normalizeIndex() {
+      // Go to the beginning after reaching the end
+      if (this.curIndex >= this.visibleItems.length)
+        this.curIndex = 0
+
+      // Go to the end after moving back from the start
+      if (this.curIndex < 0)
+        this.curIndex = this.visibleItems.length - 1
+
+      // Scroll to the element
+      const el = this.$el.querySelector("[data-item='" + this.visibleItems[this.curIndex] + "']")
+      if (el)
+        el.scrollIntoView({
+          block: "start",
+          inline: "nearest",
+          behavior: "smooth",
+        })
+    },
+
+    valueIsInItems() {
+      return this.items.indexOf(this.value) >= 0
+    },
+
+    onFocus() {
+      if (this.showResultsWhenBlank || this.value?.length)
+        this.visible = true
+    },
+
+    onInput(e) {
+      let val = e.target.value
+      if (this.valueIsInItems())
+        this.visible = false
+
+      e.stopPropagation()
+      this.$emit("input", val)
+      this.curIndex = -1
+      this.visible = true
+    },
+
+    onItemSelect(item) {
+      this.$emit("input", item)
+      this.$nextTick(() => {
+        if (this.valueIsInItems()) {
+          this.visible = false
+        }
+      })
+    },
+
+    onInputKeyUp(e) {
+      if (["ArrowUp", "ArrowDown", "Tab", "Enter", "Escape"].indexOf(e.key) >= 0)
+        e.stopPropagation()
+
+      if (e.key === "Enter" && this.valueIsInItems()) {
+        this.$refs.input.blur()
+        this.visible = false
+      }
+    },
+
+    onInputKeyDown(e) {
+      if (
+        e.key === 'ArrowDown' ||
+        (e.key === 'Tab' && !e.shiftKey) ||
+        (e.key === 'j' && e.ctrlKey)
+      ) {
+        this.selectNextItem()
+        e.preventDefault()
+      } else if (
+        e.key === 'ArrowUp' ||
+        (e.key === 'Tab' && e.shiftKey) ||
+        (e.key === 'k' && e.ctrlKey)
+      ) {
+        this.selectPrevItem()
+        e.preventDefault()
+      } else if (e.key === 'Enter') {
+        if (this.curIndex > -1 && this.visible) {
+          e.preventDefault()
+          this.onItemSelect(this.visibleItems[this.curIndex])
+          this.$refs.input.focus()
+        }
+      } else if (e.key === 'Escape') {
+        this.visible = false
+      }
+    },
+
+    onDocumentClick(e) {
+      if (this.$el.contains(e.target) || e.target.classList.contains("item"))
+        return
+
+      this.visible = false
+    },
+  },
+
+  mounted() {
+    document.addEventListener("click", this.onDocumentClick)
+  },
+}
+</script>
+
+<style lang="scss" scoped>
+.autocomplete {
+  width: 100%;
+  position: relative;
+  display: inline-block;
+
+  .input {
+    width: 100%;
+    box-shadow: $search-bar-shadow;
+  }
+
+  .items {
+    width: 100%;
+    max-height: 50vh;
+    position: absolute;
+    overflow: auto;
+    border: $default-border-2;
+    border-bottom: none;
+    border-top: none;
+    border-radius: 1em;
+    box-shadow: $search-bar-shadow;
+    z-index: 99;
+    top: 100%;
+    left: 0;
+    right: 0;
+
+    .item {
+      padding: 1em;
+      cursor: pointer;
+      border-bottom: $default-border-2;
+      background-color: $background-color;
+
+      &:hover {
+        background-color: $hover-bg-2;
+      }
+
+      .matching {
+        font-weight: bold;
+      }
+    }
+  }
+
+  .active {
+    background-color: $hover-bg-2 !important;
+  }
+}
+</style>
diff --git a/platypush/backend/http/webapp/src/components/panels/Execute/vars.scss b/platypush/backend/http/webapp/src/components/panels/Execute/vars.scss
index abe34338..31593ee1 100644
--- a/platypush/backend/http/webapp/src/components/panels/Execute/vars.scss
+++ b/platypush/backend/http/webapp/src/components/panels/Execute/vars.scss
@@ -2,7 +2,6 @@ $section-shadow: 0 3px 3px 0 rgba(187,187,187,0.75), 0 3px 3px 0 rgba(187,187,18
 $title-bg: #eee;
 $title-border: 1px solid #ddd;
 $title-shadow: 0 3px 3px 0 rgba(187,187,187,0.75);
-$action-name-shadow: 1px 1px 1px 1px #ddd;
 $extra-params-btn-bg: #eee;
 $response-bg: linear-gradient(#dbffe5, #d5ecdc);
 $error-bg: linear-gradient(#ffd9d9, #e6cbcb);
diff --git a/platypush/backend/http/webapp/src/style/autocomplete.scss b/platypush/backend/http/webapp/src/style/autocomplete.scss
deleted file mode 100644
index 6a8c5297..00000000
--- a/platypush/backend/http/webapp/src/style/autocomplete.scss
+++ /dev/null
@@ -1,32 +0,0 @@
-.autocomplete {
-  /*the container must be positioned relative:*/
-  position: relative;
-  display: inline-block;
-}
-
-.autocomplete-items {
-  position: absolute;
-  border: $default-border-2;
-  border-bottom: none;
-  border-top: none;
-  z-index: 99;
-  /*position the autocomplete items to be the same width as the container:*/
-  top: 100%;
-  left: 0;
-  right: 0;
-
-  div {
-    padding: 1em;
-    cursor: pointer;
-    border-bottom: $default-border-2;
-    background-color: $background-color;
-
-    &:hover {
-      background-color: $hover-bg-2;
-    }
-  }
-}
-
-.autocomplete-active {
-  background-color: $hover-bg-2 !important;
-}
diff --git a/platypush/backend/http/webapp/src/style/themes/light.scss b/platypush/backend/http/webapp/src/style/themes/light.scss
index 98afc5c5..b7df8f1f 100644
--- a/platypush/backend/http/webapp/src/style/themes/light.scss
+++ b/platypush/backend/http/webapp/src/style/themes/light.scss
@@ -62,6 +62,7 @@ $border-shadow-bottom-right: 2.5px 2.5px 3px 0 $default-shadow-color;
 $header-shadow: 0px 1px 3px 1px #bbb !default;
 $group-shadow: 3px -2px 6px 1px #98b0a0;
 $primary-btn-shadow: 1px 1px 0.5px 0.75px #32b64640 !default;
+$search-bar-shadow: 1px 1px 1px 1px #ddd !default;
 
 //// Modals
 $modal-header-bg: #e0e0e0 !default;