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import _ from 'underscore';
export default class CreateItemDropdown {
/**
* @param {Object} options containing
* `$dropdown` target element
* `onSelect` event callback
* $dropdown must be an element created using `dropdown_tag()` rails helper
*/
constructor(options) {
this.defaultToggleLabel = options.defaultToggleLabel;
this.fieldName = options.fieldName;
this.onSelect = options.onSelect || (() => {});
this.getDataOption = options.getData;
this.$dropdown = options.$dropdown;
this.$dropdownContainer = this.$dropdown.parent();
this.$dropdownFooter = this.$dropdownContainer.find('.dropdown-footer');
this.$createButton = this.$dropdownContainer.find('.js-dropdown-create-new-item');
this.buildDropdown();
this.bindEvents();
// Hide footer
this.toggleFooter(true);
}
buildDropdown() {
this.$dropdown.glDropdown({
data: this.getData.bind(this),
filterable: true,
remote: false,
search: {
fields: ['title'],
},
selectable: true,
toggleLabel(selected) {
return (selected && 'id' in selected) ? selected.title : this.defaultToggleLabel;
},
fieldName: this.fieldName,
text(item) {
return _.escape(item.title);
},
id(item) {
return _.escape(item.id);
},
onFilter: this.toggleCreateNewButton.bind(this),
clicked: (options) => {
options.e.preventDefault();
this.onSelect();
},
});
}
bindEvents() {
this.$createButton.on('click', this.onClickCreateWildcard.bind(this));
}
onClickCreateWildcard(e) {
e.preventDefault();
// Refresh the dropdown's data, which ends up calling `getData`
this.$dropdown.data('glDropdown').remote.execute();
this.$dropdown.data('glDropdown').selectRowAtIndex();
}
getData(term, callback) {
this.getDataOption(term, (data = []) => {
// Ensure the selected item isn't already in the data to avoid duplicates
const alreadyHasSelectedItem = this.selectedItem && data.some(item =>
item.id === this.selectedItem.id,
);
let uniqueData = data;
if (!alreadyHasSelectedItem) {
uniqueData = data.concat(this.selectedItem || []);
}
callback(uniqueData);
});
}
toggleCreateNewButton(item) {
if (item) {
this.selectedItem = {
title: item,
id: item,
text: item,
};
this.$dropdownContainer
.find('.js-dropdown-create-new-item code')
.text(item);
}
this.toggleFooter(!item);
}
toggleFooter(toggleState) {
this.$dropdownFooter.toggleClass('hidden', toggleState);
}
}
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