From 1df15b2ceaef09b48a39aa6046b577da11ea2f72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Fri, 26 Nov 2021 15:32:41 +0100
Subject: Got categories working.

---
 static/components/input-list.ts  | 101 +++++++++++++++++++++++++++++++--------
 static/components/vevent-edit.ts |   8 +++-
 2 files changed, 88 insertions(+), 21 deletions(-)

(limited to 'static/components')

diff --git a/static/components/input-list.ts b/static/components/input-list.ts
index 326cb2b5..899e8f4f 100644
--- a/static/components/input-list.ts
+++ b/static/components/input-list.ts
@@ -2,11 +2,15 @@ export { InputList }
 
 /* This file replaces input_list.js */
 
+/*
+  TODO allow each item to be a larger unit, possibly containing multiple input
+  fields.
+*/
 class InputList extends HTMLElement {
 
     el: HTMLInputElement;
 
-    values: [HTMLInputElement, any][] = [];
+    _listeners: [string, (e: Event) => void][] = [];
 
     constructor() {
         super();
@@ -14,20 +18,27 @@ class InputList extends HTMLElement {
     }
 
     connectedCallback() {
+        for (let child of this.children) {
+            child.remove();
+        }
         this.addInstance();
     }
 
-    addInstance() {
+    createInstance(): HTMLInputElement {
         let new_el = this.el.cloneNode(true) as HTMLInputElement
         let that = this;
         new_el.addEventListener('input', function() {
+            /* TODO .value is empty both if it's actually empty, but also
+               for invalid input. Check new_el.validity, and new_el.validationMessage
+            */
             if (new_el.value === '') {
-                let sibling = this.previousElementSibling || this.nextElementSibling;
-                // this.remove();
-                // that.values = that.values.filter((p) => p[0] == this)
-                that.values = that.values.filter((p) => p[0] != this);
-                this.remove();
-                (sibling as HTMLInputElement).focus();
+                let sibling = (this.previousElementSibling || this.nextElementSibling)
+                /* Only remove ourselves if we have siblings
+                   Otherwise we just linger */
+                if (sibling) {
+                    this.remove();
+                    (sibling as HTMLInputElement).focus();
+                }
             } else {
                 if (!this.nextElementSibling) {
                     that.addInstance();
@@ -36,24 +47,76 @@ class InputList extends HTMLElement {
                 }
             }
         });
-        this.values.push([new_el, ''])
-        // this.appendChild(new_el);
-        this.replaceChildren(... this.values.map((p) => p[0]))
+
+        for (let [type, proc] of this._listeners) {
+            new_el.addEventListener(type, proc);
+        }
+
+        return new_el;
+    }
+
+    addInstance() {
+        let new_el = this.createInstance();
+        this.appendChild(new_el);
     }
 
     get value(): any[] {
-        return []
+        let value_list = []
+        for (let child of this.children) {
+            value_list.push((child as any).value);
+        }
+        if (value_list[value_list.length - 1] === '') {
+            value_list.pop();
+        }
+        return value_list
     }
 
     set value(new_value: any[]) {
-        let els = [];
+
+        let all_equal = true;
+        for (let i = 0; i < this.children.length; i++) {
+            let sv = (this.children[i] as any).value
+            all_equal
+                &&= (sv == new_value[i])
+                || (sv === '' && new_value[i] == undefined)
+        }
+        if (all_equal) return;
+
+        /* Copy our current input elements into a dictionary.
+           This allows us to only create new elements where needed
+        */
+        let values = new Map;
+        for (let child of this.children) {
+            values.set((child as HTMLInputElement).value, child);
+        }
+
+        let output_list: HTMLInputElement[] = []
         for (let value of new_value) {
-            let new_el = this.el.cloneNode() as HTMLInputElement;
-            new_el.value = value;
-            els.push(new_el);
+            let element;
+            /* Only create element if needed */
+            if ((element = values.get(value))) {
+                output_list.push(element)
+                /* clear dictionary */
+                values.set(value, false);
+            } else {
+                let new_el = this.createInstance();
+                new_el.value = value;
+                output_list.push(new_el);
+            }
+        }
+        /* final, trailing, element */
+        output_list.push(this.createInstance());
+
+        this.replaceChildren(...output_list);
+    }
+
+    addEventListener(type: string, proc: ((e: Event) => void)) {
+        // if (type != 'input') throw "Only input supported";
+
+        this._listeners.push([type, proc])
+
+        for (let child of this.children) {
+            child.addEventListener(type, proc);
         }
-        /* Final element (empty) */
-        els.push(this.el.cloneNode() as HTMLInputElement);
-        this.replaceChildren(...els);
     }
 }
diff --git a/static/components/vevent-edit.ts b/static/components/vevent-edit.ts
index 4408cbb8..b9b733a0 100644
--- a/static/components/vevent-edit.ts
+++ b/static/components/vevent-edit.ts
@@ -1,9 +1,10 @@
 export { ComponentEdit }
 
 import { ComponentVEvent } from './vevent'
+import { InputList } from './input-list'
 import { DateTimeInput } from './date-time-input'
 
-import { vcal_objects, event_calendar_mapping } from '../globals'
+import { vcal_objects } from '../globals'
 import { VEvent } from '../vevent'
 import { create_event } from '../server_connect'
 
@@ -55,18 +56,21 @@ class ComponentEdit extends ComponentVEvent {
         // for (let el of this.getElementsByClassName("interactive")) {
         for (let el of this.querySelectorAll("[data-property]")) {
             // console.log(el);
-            el.addEventListener('input', () => {
+            el.addEventListener('input', (e) => {
                 let obj = vcal_objects.get(this.uid)
+                console.log(el, e);
                 if (obj === undefined) {
                     throw 'No object with uid ' + this.uid
                 }
                 if (!(el instanceof HTMLInputElement
                     || el instanceof DateTimeInput
                     || el instanceof HTMLTextAreaElement
+                    || el instanceof InputList
                 )) {
                     console.log(el, 'not an HTMLInputElement');
                     return;
                 }
+                // console.log(`obj[${el.dataset.property!}] = `, el.value);
                 obj.setProperty(
                     el.dataset.property!,
                     el.value)
-- 
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