Initial commit as of 2018-10-16

assets/js/ui/tooltip.js

@@ -0,0 +1,53 @@
+class Tooltip {
+  constructor(quill, boundsContainer) {
+    this.quill = quill;
+    this.boundsContainer = boundsContainer || document.body;
+    this.root = quill.addContainer('ql-tooltip');
+    this.root.innerHTML = this.constructor.TEMPLATE;
+    if (this.quill.root === this.quill.scrollingContainer) {
+      this.quill.root.addEventListener('scroll', () => {
+        this.root.style.marginTop = (-1*this.quill.root.scrollTop) + 'px';
+      });
+    }
+    this.hide();
+  }
+
+  hide() {
+    this.root.classList.add('ql-hidden');
+  }
+
+  position(reference) {
+    let left = reference.left + reference.width/2 - this.root.offsetWidth/2;
+    // root.scrollTop should be 0 if scrollContainer !== root
+    let top = reference.bottom + this.quill.root.scrollTop;
+    this.root.style.left = left + 'px';
+    this.root.style.top = top + 'px';
+    this.root.classList.remove('ql-flip');
+    let containerBounds = this.boundsContainer.getBoundingClientRect();
+    let rootBounds = this.root.getBoundingClientRect();
+    let shift = 0;
+    if (rootBounds.right > containerBounds.right) {
+      shift = containerBounds.right - rootBounds.right;
+      this.root.style.left = (left + shift) + 'px';
+    }
+    if (rootBounds.left < containerBounds.left) {
+      shift = containerBounds.left - rootBounds.left;
+      this.root.style.left = (left + shift) + 'px';
+    }
+    if (rootBounds.bottom > containerBounds.bottom) {
+      let height = rootBounds.bottom - rootBounds.top;
+      let verticalShift = reference.bottom - reference.top + height;
+      this.root.style.top = (top - verticalShift) + 'px';
+      this.root.classList.add('ql-flip');
+    }
+    return shift;
+  }
+
+  show() {
+    this.root.classList.remove('ql-editing');
+    this.root.classList.remove('ql-hidden');
+  }
+}
+
+
+export default Tooltip;