Highlightable attachment paths (#849)

* made autocomplete controller allow selecting text and autocommit typed text on blur

* moved click_to_edit and autoselect_typed into separate plugins

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Co-authored-by: jona <a@b.c>

assets/tomselect/click_to_edit/click_to_edit.js

@@ -0,0 +1,93 @@
+/**
+ * click_to_edit plugin for Tomselect
+ *
+ * This plugin allows editing (and selecting text in) any selected item by clicking it.
+ *
+ * Usually, when the user typed some text and created an item in Tomselect that item cannot be edited anymore. To make
+ * a change, the item has to be deleted and retyped completely. There is also generally no way to copy text out of a
+ * tomselect item. The "restore_on_backspace" plugin improves that somewhat, by allowing the user to edit an item after
+ * pressing backspace. However, it is somewhat confusing to first have to focus the field an then hit backspace in order
+ * to copy a piece of text. It may also not be immediately obvious for editing.
+ * This plugin transforms an item into editable text when it is clicked, e.g. when the user tries to place the caret
+ * within an item or when they try to drag across the text to highlight it.
+ * It also plays nice with the remove_button plugin which still removes (deselects) an option entirely.
+ *
+ * It is recommended to also enable the autoselect_typed plugin when using this plugin. Without it, the text in the
+ * input field (i.e. the item that was just clicked) is lost when the user clicks outside the field. Also, when the user
+ * clicks an option (making it text) and then tries to enter another one by entering the delimiter (e.g. space) nothing
+ * happens until enter is pressed or the text is changed from what it was.
+ */
+
+/**
+ * Return a dom element from either a dom query string, jQuery object, a dom element or html string
+ * https://stackoverflow.com/questions/494143/creating-a-new-dom-element-from-an-html-string-using-built-in-dom-methods-or-pro/35385518#35385518
+ *
+ * param query should be {}
+ */
+const getDom = query => {
+    if (query.jquery) {
+        return query[0];
+    }
+    if (query instanceof HTMLElement) {
+        return query;
+    }
+    if (isHtmlString(query)) {
+        var tpl = document.createElement('template');
+        tpl.innerHTML = query.trim(); // Never return a text node of whitespace as the result
+        return tpl.content.firstChild;
+    }
+    return document.querySelector(query);
+};
+const isHtmlString = arg => {
+    if (typeof arg === 'string' && arg.indexOf('<') > -1) {
+        return true;
+    }
+    return false;
+};
+
+function plugin(plugin_options_) {
+    const self = this
+
+    const plugin_options = Object.assign({
+        //If there is unsubmitted text in the input field, should that text be automatically used to select a matching
+        //element? If this is off, clicking on item1 and then clicking on item2 will result in item1 being deselected
+        auto_select_before_edit: true,
+        //If there is unsubmitted text in the input field, should that text be automatically used to create a matching
+        //element if no matching element was found or auto_select_before_edit is off?
+        auto_create_before_edit: true,
+        //customize this function to change which text the item is replaced with when clicking on it
+        text: option => {
+            return option[self.settings.labelField];
+        }
+    }, plugin_options_);
+
+
+    self.hook('after', 'setupTemplates', () => {
+        const orig_render_item = self.settings.render.item;
+        self.settings.render.item = (data, escape) => {
+            const item = getDom(orig_render_item.call(self, data, escape));
+
+            item.addEventListener('click', evt => {
+                    if (self.isLocked) {
+                        return;
+                    }
+                    const val = self.inputValue();
+
+                    if (self.options[val]) {
+                        self.addItem(val)
+                    } else if (self.settings.create) {
+                        self.createItem();
+                    }
+                    const option = self.options[item.dataset.value]
+                    self.setTextboxValue(plugin_options.text.call(self, option));
+                    self.focus();
+                    self.removeItem(item);
+                }
+            );
+
+            return item;
+        }
+    });
+
+}
+export { plugin as default };