Migrated entity selector out of angular

resources/assets/js/components/entity-selector.js

@@ -0,0 +1,113 @@
+
+class EntitySelector {
+
+    constructor(elem) {
+        this.elem = elem;
+        this.search = '';
+        this.lastClick = 0;
+
+        let entityTypes = elem.hasAttribute('entity-types') ? elem.getAttribute('entity-types') : 'page,book,chapter';
+        this.searchUrl = window.baseUrl(`/ajax/search/entities?types=${encodeURIComponent(entityTypes)}`);
+
+        this.input = elem.querySelector('[entity-selector-input]');
+        this.searchInput = elem.querySelector('[entity-selector-search]');
+        this.loading = elem.querySelector('[entity-selector-loading]');
+        this.resultsContainer = elem.querySelector('[entity-selector-results]');
+
+        this.elem.addEventListener('click', this.onClick.bind(this));
+
+        let lastSearch = 0;
+        this.searchInput.addEventListener('input', event => {
+            lastSearch = Date.now();
+            this.showLoading();
+            setTimeout(() => {
+                if (Date.now() - lastSearch < 199) return;
+                this.searchEntities(this.searchInput.value);
+            }, 200);
+        });
+        this.searchInput.addEventListener('keydown', event => {
+            if (event.keyCode === 13) event.preventDefault();
+        });
+
+        this.showLoading();
+        this.initialLoad();
+    }
+
+    showLoading() {
+        this.loading.style.display = 'block';
+        this.resultsContainer.style.display = 'none';
+    }
+
+    hideLoading() {
+        this.loading.style.display = 'none';
+        this.resultsContainer.style.display = 'block';
+    }
+
+    initialLoad() {
+        window.$http.get(this.searchUrl).then(resp => {
+            this.resultsContainer.innerHTML = resp.data;
+            this.hideLoading();
+        })
+    }
+
+    searchEntities(searchTerm) {
+        this.input.value = '';
+        let url = this.searchUrl + `&term=${encodeURIComponent(searchTerm)}`;
+        window.$http.get(url).then(resp => {
+            this.resultsContainer.innerHTML = resp.data;
+            this.hideLoading();
+        });
+    }
+
+    isDoubleClick() {
+        let now = Date.now();
+        let answer = now - this.lastClick < 300;
+        this.lastClick = now;
+        return answer;
+    }
+
+    onClick(event) {
+        let t = event.target;
+
+        if (t.matches('.entity-list a')) {
+            event.preventDefault();
+            event.stopPropagation();
+            let item = t.closest('[data-entity-type]');
+            this.selectItem(item);
+        } else if (t.matches('[data-entity-type]')) {
+            this.selectItem(t)
+        }
+
+    }
+
+    selectItem(item) {
+        let isDblClick = this.isDoubleClick();
+        let type = item.getAttribute('data-entity-type');
+        let id = item.getAttribute('data-entity-id');
+        let isSelected = item.classList.contains('selected') || isDblClick;
+
+        this.unselectAll();
+        this.input.value = isSelected ? `${type}:${id}` : '';
+
+        if (!isSelected) window.$events.emit('entity-select-change', null);
+        if (!isDblClick && !isSelected) return;
+
+        let link = item.querySelector('.entity-list-item-link').getAttribute('href');
+        let name = item.querySelector('.entity-list-item-name').textContent;
+        let data = {id: Number(id), name: name, link: link};
+
+        if (isDblClick) window.$events.emit('entity-select-confirm', data);
+        if (isSelected) window.$events.emit('entity-select-change', data);
+    }
+
+    unselectAll() {
+        let selected = this.elem.querySelectorAll('.selected');
+        for (let i = 0, len = selected.length; i < len; i++) {
+            selected[i].classList.remove('selected');
+            selected[i].classList.remove('primary-background');
+        }
+    }
+
+}
+
+module.exports = EntitySelector;