Updated js dev docs with latest component changes

[bookstack] / resources / js / components / dropdown.js

diff --git a/resources/js/components/dropdown.js b/resources/js/components/dropdown.js
index f761ecf011541590963caf66daf4b145f43c8cde..2625ff4de2f38c27d983d14d431e07e3c31fd44b 100644 (file)
--- a/resources/js/components/dropdown.js
+++ b/resources/js/components/dropdown.js
@@ -1,11 +1,11 @@
 import {onSelect} from "../services/dom";
+import {Component} from "./component";
 
 /**
  * Dropdown
  * Provides some simple logic to create simple dropdown menus.
- * @extends {Component}
  */
-class DropDown {
+export class Dropdown extends Component {
 
     setup() {
         this.container = this.$el;
@@ -28,18 +28,27 @@ class DropDown {
         this.menu.classList.add('anim', 'menuIn');
         this.toggle.setAttribute('aria-expanded', 'true');
 
+        const menuOriginalRect = this.menu.getBoundingClientRect();
+        let heightOffset = 0;
+        const toggleHeight = this.toggle.getBoundingClientRect().height;
+        const dropUpwards = menuOriginalRect.bottom > window.innerHeight;
+
+        // If enabled, Move to body to prevent being trapped within scrollable sections
         if (this.moveMenu) {
-            // Move to body to prevent being trapped within scrollable sections
-            this.rect = this.menu.getBoundingClientRect();
             this.body.appendChild(this.menu);
             this.menu.style.position = 'fixed';
-            if (this.direction === 'right') {
-                this.menu.style.right = `${(this.rect.right - this.rect.width)}px`;
-            } else {
-                this.menu.style.left = `${this.rect.left}px`;
-            }
-            this.menu.style.top = `${this.rect.top}px`;
-            this.menu.style.width = `${this.rect.width}px`;
+            this.menu.style.width = `${menuOriginalRect.width}px`;
+            this.menu.style.left = `${menuOriginalRect.left}px`;
+            heightOffset = dropUpwards ? (window.innerHeight - menuOriginalRect.top  - toggleHeight / 2) : menuOriginalRect.top;
+        }
+
+        // Adjust menu to display upwards if near the bottom of the screen
+        if (dropUpwards) {
+            this.menu.style.top = 'initial';
+            this.menu.style.bottom = `${heightOffset}px`;
+        } else {
+            this.menu.style.top = `${heightOffset}px`;
+            this.menu.style.bottom = 'initial';
         }
 
         // Set listener to hide on mouse leave or window click
@@ -65,7 +74,7 @@ class DropDown {
     }
 
     hideAll() {
-        for (let dropdown of window.components.dropdown) {
+        for (let dropdown of window.$components.get('dropdown')) {
             dropdown.hide();
         }
     }
@@ -74,18 +83,22 @@ class DropDown {
         this.menu.style.display = 'none';
         this.menu.classList.remove('anim', 'menuIn');
         this.toggle.setAttribute('aria-expanded', 'false');
+        this.menu.style.top = '';
+        this.menu.style.bottom = '';
+
         if (this.moveMenu) {
             this.menu.style.position = '';
             this.menu.style[this.direction] = '';
-            this.menu.style.top = '';
             this.menu.style.width = '';
+            this.menu.style.left = '';
             this.container.appendChild(this.menu);
         }
+
         this.showing = false;
     }
 
     getFocusable() {
-        return Array.from(this.menu.querySelectorAll('[tabindex],[href],button,input:not([type=hidden])'));
+        return Array.from(this.menu.querySelectorAll('[tabindex]:not([tabindex="-1"]),[href],button,input:not([type=hidden])'));
     }
 
     focusNext() {
@@ -158,6 +171,4 @@ class DropDown {
         });
     }
 
-}
-
-export default DropDown;
\ No newline at end of file
+}
\ No newline at end of file