From 4df74771e3a5eb6e81d9bbfc65f57f35a80516df Mon Sep 17 00:00:00 2001
From: Jan Oberhauser <jan.oberhauser@gmail.com>
Date: Fri, 23 Oct 2020 13:44:34 +0200
Subject: [PATCH] :zap: Improve support for touch-devices #1070

---
 packages/editor-ui/package.json               |  3 +-
 packages/editor-ui/src/components/Node.vue    | 12 ++--
 .../components/mixins/deviceSupportHelpers.ts | 30 ++++++++++
 .../src/components/mixins/mouseSelect.ts      | 21 +++++--
 .../src/components/mixins/moveNodeWorkflow.ts | 58 +++++++++++--------
 .../src/components/mixins/nodeBase.ts         | 20 ++-----
 packages/editor-ui/src/main.ts                |  4 ++
 packages/editor-ui/src/views/NodeView.vue     | 25 +++++---
 8 files changed, 113 insertions(+), 60 deletions(-)
 create mode 100644 packages/editor-ui/src/components/mixins/deviceSupportHelpers.ts

diff --git a/packages/editor-ui/package.json b/packages/editor-ui/package.json
index 210822e8a5..ee20331e77 100644
--- a/packages/editor-ui/package.json
+++ b/packages/editor-ui/package.json
@@ -25,7 +25,8 @@
     "test:unit": "vue-cli-service test:unit"
   },
   "dependencies": {
-    "uuid": "^8.1.0"
+    "uuid": "^8.1.0",
+    "vue2-touch-events": "^2.3.2"
   },
   "devDependencies": {
     "@beyonk/google-fonts-webpack-plugin": "^1.2.3",
diff --git a/packages/editor-ui/src/components/Node.vue b/packages/editor-ui/src/components/Node.vue
index 06f9bf8aec..3f52a14065 100644
--- a/packages/editor-ui/src/components/Node.vue
+++ b/packages/editor-ui/src/components/Node.vue
@@ -1,6 +1,6 @@
 <template>
 	<div class="node-wrapper" :style="nodePosition">
-		<div class="node-default" :ref="data.name" :style="nodeStyle" :class="nodeClass" @dblclick="setNodeActive" @click.left="mouseLeftClick">
+		<div class="node-default" :ref="data.name" :style="nodeStyle" :class="nodeClass" @dblclick="setNodeActive" @click.left="mouseLeftClick" v-touch:end="mouseLeftClick">
 			<div v-if="hasIssues" class="node-info-icon node-issues">
 				<el-tooltip placement="top" effect="light">
 					<div slot="content" v-html="nodeIssues"></div>
@@ -13,19 +13,19 @@
 				<font-awesome-icon icon="sync-alt" spin />
 			</div>
 			<div class="node-options" v-if="!isReadOnly">
-				<div @click.stop.left="deleteNode" class="option" title="Delete Node" >
+				<div v-touch:tap="deleteNode" class="option" title="Delete Node" >
 					<font-awesome-icon icon="trash" />
 				</div>
-				<div @click.stop.left="disableNode" class="option" title="Activate/Deactivate Node" >
+				<div v-touch:tap="disableNode" v-touch-options="{disableClick: true}" class="option" title="Activate/Deactivate Node" >
 					<font-awesome-icon :icon="nodeDisabledIcon" />
 				</div>
-				<div @click.stop.left="duplicateNode" class="option" title="Duplicate Node" >
+				<div v-touch:tap="duplicateNode" class="option" title="Duplicate Node" >
 					<font-awesome-icon icon="clone" />
 				</div>
-				<div @click.stop.left="setNodeActive" class="option touch" title="Edit Node" v-if="!isReadOnly">
+				<div v-touch:tap="setNodeActive" class="option touch" title="Edit Node" v-if="!isReadOnly">
 					<font-awesome-icon class="execute-icon" icon="cog" />
 				</div>
-				<div @click.stop.left="executeNode" class="option" title="Execute Node" v-if="!isReadOnly && !workflowRunning">
+				<div v-touch:tap="executeNode" class="option" title="Execute Node" v-if="!isReadOnly && !workflowRunning">
 					<font-awesome-icon class="execute-icon" icon="play-circle" />
 				</div>
 			</div>
diff --git a/packages/editor-ui/src/components/mixins/deviceSupportHelpers.ts b/packages/editor-ui/src/components/mixins/deviceSupportHelpers.ts
new file mode 100644
index 0000000000..85ccd9c6a0
--- /dev/null
+++ b/packages/editor-ui/src/components/mixins/deviceSupportHelpers.ts
@@ -0,0 +1,30 @@
+import Vue from 'vue';
+
+export const deviceSupportHelpers = Vue.extend({
+	data() {
+		return {
+			isTouchDevice: 'ontouchstart' in window || navigator.msMaxTouchPoints,
+			isMacOs: /(ipad|iphone|ipod|mac)/i.test(navigator.platform),
+		};
+	},
+	computed: {
+		// TODO: Check if used anywhere
+		controlKeyCode(): string {
+			if (this.isMacOs) {
+				return 'Meta';
+			}
+			return 'Control';
+		},
+	},
+	methods: {
+		isCtrlKeyPressed(e: MouseEvent | KeyboardEvent): boolean {
+			if (this.isTouchDevice === true) {
+				return true;
+			}
+			if (this.isMacOs) {
+				return e.metaKey;
+			}
+			return e.ctrlKey;
+		},
+	},
+});
diff --git a/packages/editor-ui/src/components/mixins/mouseSelect.ts b/packages/editor-ui/src/components/mixins/mouseSelect.ts
index 7a86c1e4ab..0b280297f0 100644
--- a/packages/editor-ui/src/components/mixins/mouseSelect.ts
+++ b/packages/editor-ui/src/components/mixins/mouseSelect.ts
@@ -2,20 +2,19 @@ import { INodeUi } from '@/Interface';
 
 import mixins from 'vue-typed-mixins';
 
+import { deviceSupportHelpers } from '@/components/mixins/deviceSupportHelpers';
 import { nodeIndex } from '@/components/mixins/nodeIndex';
 
-export const mouseSelect = mixins(nodeIndex).extend({
+export const mouseSelect = mixins(
+	deviceSupportHelpers,
+	nodeIndex,
+).extend({
 	data () {
 		return {
 			selectActive: false,
 			selectBox: document.createElement('span'),
 		};
 	},
-	computed: {
-		isMacOs (): boolean {
-			return /(ipad|iphone|ipod|mac)/i.test(navigator.platform);
-		},
-	},
 	mounted () {
 		this.createSelectBox();
 	},
@@ -34,6 +33,9 @@ export const mouseSelect = mixins(nodeIndex).extend({
 			this.$el.appendChild(this.selectBox);
 		},
 		isCtrlKeyPressed (e: MouseEvent | KeyboardEvent): boolean {
+			if (this.isTouchDevice === true) {
+				return true;
+			}
 			if (this.isMacOs) {
 				return e.metaKey;
 			}
@@ -125,6 +127,13 @@ export const mouseSelect = mixins(nodeIndex).extend({
 		},
 		mouseUpMouseSelect (e: MouseEvent) {
 			if (this.selectActive === false) {
+				if (this.isTouchDevice === true) {
+					// @ts-ignore
+					if (e.target && e.target.id.includes('node-view')) {
+						// Deselect all nodes
+						this.deselectAllNodes();
+					}
+				}
 				// If it is not active return direcly.
 				// Else normal node dragging will not work.
 				return;
diff --git a/packages/editor-ui/src/components/mixins/moveNodeWorkflow.ts b/packages/editor-ui/src/components/mixins/moveNodeWorkflow.ts
index b526dd5c75..c2daac5cc3 100644
--- a/packages/editor-ui/src/components/mixins/moveNodeWorkflow.ts
+++ b/packages/editor-ui/src/components/mixins/moveNodeWorkflow.ts
@@ -1,41 +1,42 @@
 import mixins from 'vue-typed-mixins';
 
+import { deviceSupportHelpers } from '@/components/mixins/deviceSupportHelpers';
 import { nodeIndex } from '@/components/mixins/nodeIndex';
 
-export const moveNodeWorkflow = mixins(nodeIndex).extend({
+export const moveNodeWorkflow = mixins(
+	deviceSupportHelpers,
+	nodeIndex,
+).extend({
 	data () {
 		return {
 			moveLastPosition: [0, 0],
 		};
 	},
-	computed: {
-		controlKeyCode (): string {
-			if (this.isMacOs) {
-				return 'Meta';
-			}
-			return 'Control';
-		},
-		isMacOs (): boolean {
-			return /(ipad|iphone|ipod|mac)/i.test(navigator.platform);
-		},
-	},
+
 	methods: {
-		isCtrlKeyPressed (e: MouseEvent | KeyboardEvent): boolean {
-			if (this.isMacOs) {
-				return e.metaKey;
-			}
-			return e.ctrlKey;
+		getMousePosition(e: MouseEvent | TouchEvent) {
+			// @ts-ignore
+			const x = e.pageX !== undefined ? e.pageX : (e.touches && e.touches[0] && e.touches[0].pageX ? e.touches[0].pageX : 0);
+			// @ts-ignore
+			const y = e.pageY !== undefined ? e.pageY : (e.touches && e.touches[0] && e.touches[0].pageY ? e.touches[0].pageY : 0);
+
+			return {
+				x,
+				y,
+			};
 		},
 		moveWorkflow (e: MouseEvent) {
 			const offsetPosition = this.$store.getters.getNodeViewOffsetPosition;
 
-			const nodeViewOffsetPositionX = offsetPosition[0] + (e.pageX - this.moveLastPosition[0]);
-			const nodeViewOffsetPositionY = offsetPosition[1] + (e.pageY - this.moveLastPosition[1]);
+			const position = this.getMousePosition(e);
+
+			const nodeViewOffsetPositionX = offsetPosition[0] + (position.x - this.moveLastPosition[0]);
+			const nodeViewOffsetPositionY = offsetPosition[1] + (position.y - this.moveLastPosition[1]);
 			this.$store.commit('setNodeViewOffsetPosition', [nodeViewOffsetPositionX, nodeViewOffsetPositionY]);
 
 			// Update the last position
-			this.moveLastPosition[0] = e.pageX;
-			this.moveLastPosition[1] = e.pageY;
+			this.moveLastPosition[0] = position.x;
+			this.moveLastPosition[1] = position.y;
 		},
 		mouseDownMoveWorkflow (e: MouseEvent) {
 			if (this.isCtrlKeyPressed(e) === false) {
@@ -51,8 +52,10 @@ export const moveNodeWorkflow = mixins(nodeIndex).extend({
 
 			this.$store.commit('setNodeViewMoveInProgress', true);
 
-			this.moveLastPosition[0] = e.pageX;
-			this.moveLastPosition[1] = e.pageY;
+			const position = this.getMousePosition(e);
+
+			this.moveLastPosition[0] = position.x;
+			this.moveLastPosition[1] = position.y;
 
 			// @ts-ignore
 			this.$el.addEventListener('mousemove', this.mouseMoveNodeWorkflow);
@@ -72,6 +75,15 @@ export const moveNodeWorkflow = mixins(nodeIndex).extend({
 			// Nothing else to do. Simply leave the node view at the current offset
 		},
 		mouseMoveNodeWorkflow (e: MouseEvent) {
+			// @ts-ignore
+			if (e.target && !e.target.id.includes('node-view')) {
+				return;
+			}
+
+			if (this.$store.getters.isActionActive('dragActive')) {
+				return;
+			}
+
 			if (e.buttons === 0) {
 				// Mouse button is not pressed anymore so stop selection mode
 				// Happens normally when mouse leave the view pressed and then
diff --git a/packages/editor-ui/src/components/mixins/nodeBase.ts b/packages/editor-ui/src/components/mixins/nodeBase.ts
index ba3661700a..753b06b308 100644
--- a/packages/editor-ui/src/components/mixins/nodeBase.ts
+++ b/packages/editor-ui/src/components/mixins/nodeBase.ts
@@ -2,20 +2,20 @@ import { IConnectionsUi, IEndpointOptions, INodeUi, XYPositon } from '@/Interfac
 
 import mixins from 'vue-typed-mixins';
 
+import { deviceSupportHelpers } from '@/components/mixins/deviceSupportHelpers';
 import { nodeIndex } from '@/components/mixins/nodeIndex';
 import { NODE_NAME_PREFIX } from '@/constants';
 
-export const nodeBase = mixins(nodeIndex).extend({
+export const nodeBase = mixins(
+	deviceSupportHelpers,
+	nodeIndex,
+).extend({
 	mounted () {
 		// Initialize the node
 		if (this.data !== null) {
 			this.__addNode(this.data);
 		}
 	},
-	data () {
-		return {
-		};
-	},
 	computed: {
 		data (): INodeUi {
 			return this.$store.getters.nodeByName(this.name);
@@ -26,9 +26,6 @@ export const nodeBase = mixins(nodeIndex).extend({
 			}
 			return false;
 		},
-		isMacOs (): boolean {
-			return /(ipad|iphone|ipod|mac)/i.test(navigator.platform);
-		},
 		nodeName (): string {
 			return NODE_NAME_PREFIX + this.nodeIndex;
 		},
@@ -337,13 +334,6 @@ export const nodeBase = mixins(nodeIndex).extend({
 
 		},
 
-		isCtrlKeyPressed (e: MouseEvent | KeyboardEvent): boolean {
-			if (this.isMacOs) {
-				return e.metaKey;
-			}
-			return e.ctrlKey;
-		},
-
 		mouseLeftClick (e: MouseEvent) {
 			if (this.$store.getters.isActionActive('dragActive')) {
 				this.$store.commit('removeActiveAction', 'dragActive');
diff --git a/packages/editor-ui/src/main.ts b/packages/editor-ui/src/main.ts
index 37784f7e89..847b3b3ed2 100644
--- a/packages/editor-ui/src/main.ts
+++ b/packages/editor-ui/src/main.ts
@@ -5,6 +5,7 @@ import Vue from 'vue';
 import 'prismjs';
 import 'prismjs/themes/prism.css';
 import 'vue-prism-editor/dist/VuePrismEditor.css';
+import Vue2TouchEvents from 'vue2-touch-events';
 
 import * as ElementUI from 'element-ui';
 // @ts-ignore
@@ -91,6 +92,9 @@ import {
 import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome';
 
 import { store } from './store';
+
+Vue.use(Vue2TouchEvents);
+
 Vue.use(ElementUI, { locale });
 
 library.add(faAngleDoubleLeft);
diff --git a/packages/editor-ui/src/views/NodeView.vue b/packages/editor-ui/src/views/NodeView.vue
index bdd61e17ca..207c53d495 100644
--- a/packages/editor-ui/src/views/NodeView.vue
+++ b/packages/editor-ui/src/views/NodeView.vue
@@ -3,11 +3,15 @@
 		<div
 			class="node-view-wrapper"
 			:class="workflowClasses"
+			@touchstart="mouseDown"
+			@touchend="mouseUp"
+			@touchmove="mouseMoveNodeWorkflow"
 			@mousedown="mouseDown"
+			v-touch:tap="mouseDown"
 			@mouseup="mouseUp"
 			@wheel="wheelScroll"
 			>
-			<div class="node-view-background" :style="backgroundStyle"></div>
+			<div id="node-view-background" class="node-view-background" :style="backgroundStyle"></div>
 			<div id="node-view" class="node-view" :style="workflowStyle">
 				<node
 				v-for="nodeData in nodes"
@@ -336,14 +340,17 @@ export default mixins(
 
 				await this.addNodes(data.nodes, data.connections);
 			},
-			mouseDown (e: MouseEvent) {
-				// Save the location of the mouse click
-				const offsetPosition = this.$store.getters.getNodeViewOffsetPosition;
-				this.lastClickPosition[0] = e.pageX - offsetPosition[0];
-				this.lastClickPosition[1] = e.pageY - offsetPosition[1];
+			mouseDown (e: MouseEvent | TouchEvent) {
+				console.log('mouseDown');
 
-				this.mouseDownMouseSelect(e);
-				this.mouseDownMoveWorkflow(e);
+				// Save the location of the mouse click
+				const position = this.getMousePosition(e);
+				const offsetPosition = this.$store.getters.getNodeViewOffsetPosition;
+				this.lastClickPosition[0] = position.x - offsetPosition[0];
+				this.lastClickPosition[1] = position.y - offsetPosition[1];
+
+				this.mouseDownMouseSelect(e as MouseEvent);
+				this.mouseDownMoveWorkflow(e as MouseEvent);
 
 				// Hide the node-creator
 				this.createNodeActive = false;
@@ -1680,7 +1687,7 @@ export default mixins(
 				const createNodes: INode[] = [];
 
 				await this.loadNodesProperties(data.nodes.map(node => node.type));
-				
+
 				data.nodes.forEach(node => {
 					if (nodeTypesCount[node.type] !== undefined) {
 						if (nodeTypesCount[node.type].exist >= nodeTypesCount[node.type].max) {