From a727b54dbb7d6630b5343add2bdffb30aa488d3c Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Sat, 19 Jun 2021 09:24:05 +0200
Subject: delete keyframes with delete/backspace

---
 package.json     |  1 +
 pages/editor.tsx | 34 ++++++++++++++++++++++++++++++----
 yarn.lock        |  5 +++++
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/package.json b/package.json
index 9ece09e..ea90dc2 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
 		"@material-ui/lab": "^4.0.0-alpha.58",
 		"@mdi/js": "^5.9.55",
 		"@mdi/react": "^1.5.0",
+		"@types/mousetrap": "^1.6.8",
 		"@types/uuid": "^8.3.0",
 		"ajv": "^8.3.0",
 		"mousetrap": "^1.6.5",
diff --git a/pages/editor.tsx b/pages/editor.tsx
index 0da9a0d..a1960a8 100644
--- a/pages/editor.tsx
+++ b/pages/editor.tsx
@@ -1,7 +1,12 @@
+import mousetrap from 'mousetrap';
 import { CSSProperties, ReactNode, useEffect, useRef, useState } from 'react';
 import { animated, useSpring } from 'react-spring';
 import { useDrag } from 'react-use-gesture';
 import create from 'zustand';
+
+import { PressureIcon, SlideKeyframe } from '../components/icons';
+import PlaySkipIconAni from '../components/play-skip';
+import Selection from '../components/selection';
 import { anySlide, loopBeginSlide, loopSlide, slide, slideTypes, toolToSlide } from '../timeline';
 import { TimedVideoPlayer } from './present';
 
@@ -21,9 +26,6 @@ import NavigateBeforeRoundedIcon from '@material-ui/icons/NavigateBeforeRounded'
 import NavigateNextRoundedIcon from '@material-ui/icons/NavigateNextRounded';
 import SkipPreviousRoundedIcon from '@material-ui/icons/SkipPreviousRounded';
 import { mdiCursorDefault } from '@mdi/js';
-import { PressureIcon, SlideKeyframe } from '../components/icons';
-import PlaySkipIconAni from '../components/play-skip';
-import Selection from '../components/selection';
 
 var keyframeInAnimations: { [key: string]: { x: number; y: number; }; } = {};
 var slideAPIs: { [key: string]: any; }[] = [];
@@ -34,7 +36,8 @@ var useWorkingTimeline = create((set, get) => ({
 	setTimeline: (newTimeline: anySlide[]) => set(() => ({ timeline: newTimeline })),
 	refreshLiveTimeline: () => {
 		player.timeline.slides = Array(...((get() as any).timeline));
-		player.timeline.slides.sort((a: anySlide, b: anySlide) => a.frame - b.frame);
+		player.timeline.slides = player.timeline.slides.filter(slide => slide != null);
+		player.timeline.slides.sort((a, b) => a.frame - b.frame);
 		player.timeline.slides[-1] = { // TODO: dry
 			id: '00000000-0000-0000-0000-000000000000',
 			frame: 0,
@@ -497,6 +500,29 @@ function TimelineEditor(props: {
 		}
 	}, { domTarget: selectionAreaRef, eventOptions: { passive: false } });
 
+	useEffect(() => {
+		var delkeys = ['del', 'backspace'];
+		mousetrap.bind(delkeys, () => {
+			if (!selectionPlaced) return;
+
+			selection.forEach((slide: anySlide) => {
+				if (!slideTypes.includes(slide.type)) return;
+				var index = workingTimeline.findIndex((s: anySlide) => s?.id == slide.id);
+				if (index == -1) return;
+				delete workingTimeline[index];
+			});
+			refreshWorkingTimline();
+
+			setSelectionPlaced(false);
+			setSelectionHidden(true);
+			setSelection([]);
+		});
+
+		return () => {
+			mousetrap.unbind(delkeys);
+		};
+	}, [selectionPlaced, workingTimeline]);
+
 	return <>
 		<canvas
 			className='timeScale posabs a0'
diff --git a/yarn.lock b/yarn.lock
index 31091a8..39c1649 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -292,6 +292,11 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.7.tgz#98a993516c859eb0d5c4c8f098317a9ea68db9ad"
   integrity sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA==
 
+"@types/mousetrap@^1.6.8":
+  version "1.6.8"
+  resolved "https://registry.yarnpkg.com/@types/mousetrap/-/mousetrap-1.6.8.tgz#448929e6dc21126392830465fdb9d4a2cfc16a88"
+  integrity sha512-zTqjvgCUT5EoXqbqmd8iJMb4NJqyV/V7pK7AIKq7qcaAsJIpGlTVJS1HQM6YkdHCdnkNSbhcQI7MXYxFfE3iCA==
+
 "@types/node@*":
   version "15.6.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-15.6.0.tgz#f0ddca5a61e52627c9dcb771a6039d44694597bc"
-- 
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