From ac460c68833b40b2c10510b11bfbea7280068260 Mon Sep 17 00:00:00 2001
From: Antelle <dmitryvit@gmail.com>
Date: Sun, 18 Oct 2015 18:43:16 +0300
Subject: [PATCH] tags autocomplete

---
 TODO.md                                     |  1 -
 app/scripts/views/fields/field-view-tags.js | 72 +++++++++++++++++++--
 app/styles/areas/_details.scss              | 15 +++++
 3 files changed, 80 insertions(+), 8 deletions(-)

diff --git a/TODO.md b/TODO.md
index 5a56f70c..77473cef 100644
--- a/TODO.md
+++ b/TODO.md
@@ -3,7 +3,6 @@
 - [ ] add/edit groups
 - [ ] dropbox
 - [ ] generate
-- [ ] tags autocomplete
 - [ ] file settings
 
 # FUTURE
diff --git a/app/scripts/views/fields/field-view-tags.js b/app/scripts/views/fields/field-view-tags.js
index 05576860..227a42d1 100644
--- a/app/scripts/views/fields/field-view-tags.js
+++ b/app/scripts/views/fields/field-view-tags.js
@@ -11,17 +11,75 @@ var FieldViewTags = FieldViewText.extend({
         return value ? value.join(', ') : '';
     },
 
+    valueToTags: function(val) {
+        var allTags = {};
+        this.model.tags.forEach(function(tag) {
+            allTags[tag.toLowerCase()] = tag;
+        });
+        return _.unique(val.split(/\s*[;,:]\s*/).filter(_.identity).map(function (tag) {
+            return allTags[tag.toLowerCase()] || tag;
+        }));
+    },
+
     endEdit: function(newVal, extra) {
+        if (this.selectedTag) {
+            newVal += (newVal ? ', ' : '') + this.selectedTag;
+            this.input.val(newVal);
+            this.input.focus();
+            this.setTags();
+            delete this.selectedTag;
+            return;
+        }
         if (newVal !== undefined) {
-            var allTags = {};
-            this.model.tags.forEach(function(tag) {
-                allTags[tag.toLowerCase()] = tag;
-            });
-            newVal = _.unique(newVal.split(/\s*[;,:]\s*/).filter(_.identity).map(function (tag) {
-                return allTags[tag.toLowerCase()] || tag;
-            }));
+            newVal = this.valueToTags(newVal);
+        }
+        if (this.tagsAutocomplete) {
+            this.tagsAutocomplete.remove();
+            this.tagsAutocomplete = null;
         }
         FieldViewText.prototype.endEdit.call(this, newVal, extra);
+    },
+
+    startEdit: function() {
+        FieldViewText.prototype.startEdit.call(this);
+        var fieldRect = this.input[0].getBoundingClientRect();
+        this.tagsAutocomplete = $('<div class="details__tags-autocomplete"></div>').appendTo('body');
+        this.tagsAutocomplete.css({
+            top: fieldRect.bottom,
+            left: fieldRect.left,
+            width: fieldRect.width - 2
+        });
+        this.tagsAutocomplete.mousedown(this.tagsAutocompleteClick.bind(this));
+        this.setTags();
+    },
+
+    fieldValueInput: function(e) {
+        e.stopPropagation();
+        this.setTags();
+        FieldViewText.prototype.fieldValueInput.call(this, e);
+    },
+
+    getAvailableTags: function() {
+        var tags = this.valueToTags(this.input.val());
+        return this.model.tags.filter(function(tag) {
+            return tags.indexOf(tag) < 0;
+        });
+    },
+
+    setTags: function() {
+        var availableTags = this.getAvailableTags();
+        var tagsHtml = availableTags.map(function(tag) {
+            return '<div class="details__tags-autocomplete-tag">' + _.escape(tag) + '</div>';
+        }).join('');
+        this.tagsAutocomplete.html(tagsHtml);
+        this.tagsAutocomplete.toggle(tagsHtml);
+    },
+
+    tagsAutocompleteClick: function(e) {
+        e.stopPropagation();
+        if (e.target.classList.contains('details__tags-autocomplete-tag')) {
+            this.selectedTag = $(e.target).text();
+        }
     }
 });
 
diff --git a/app/styles/areas/_details.scss b/app/styles/areas/_details.scss
index 7a2db7b5..08795c49 100644
--- a/app/styles/areas/_details.scss
+++ b/app/styles/areas/_details.scss
@@ -446,4 +446,19 @@
       margin-top: 1em;
     }
   }
+
+  &__tags-autocomplete {
+    position: absolute;
+    @include th {
+      color: text-color();
+      background: background-color();
+      border: 1px solid light-border-color();
+      box-shadow: dropdown-box-shadow();
+    }
+    &-tag {
+      padding: $base-padding;
+      display: inline-block;
+      @include area-selectable(bottom);
+    }
+  }
 }