Automata/packages/editor-ui/src/mixins/moveNodeWorkflow.ts

import mixins from 'vue-typed-mixins';
import { deviceSupportHelpers } from '@/mixins/deviceSupportHelpers';
import { getMousePosition } from '@/utils/nodeViewUtils';
import { mapStores } from 'pinia';
import { useUIStore } from '@/stores/ui';

export const moveNodeWorkflow = mixins(
	deviceSupportHelpers,
).extend({
	data () {
		return {
			moveLastPosition: [0, 0],
		};
	},
	computed: {
		...mapStores(useUIStore),
	},
	methods: {
		moveWorkflow (e: MouseEvent) {
			const offsetPosition = this.uiStore.nodeViewOffsetPosition;

			const [x, y] = getMousePosition(e);

			const nodeViewOffsetPositionX = offsetPosition[0] + (x - this.moveLastPosition[0]);
			const nodeViewOffsetPositionY = offsetPosition[1] + (y - this.moveLastPosition[1]);
			this.uiStore.nodeViewOffsetPosition = [nodeViewOffsetPositionX, nodeViewOffsetPositionY];

			// Update the last position
			this.moveLastPosition[0] = x;
			this.moveLastPosition[1] = y;
		},
		mouseDownMoveWorkflow (e: MouseEvent) {
			if (this.isCtrlKeyPressed(e) === false) {
				// We only care about it when the ctrl key is pressed at the same time.
				// So we exit when it is not pressed.
				return;
			}

			if (this.uiStore.isActionActive('dragActive')) {
				// If a node does currently get dragged we do not activate the selection
				return;
			}

			this.uiStore.nodeViewMoveInProgress = true;

			const [x, y] = getMousePosition(e);

			this.moveLastPosition[0] = x;
			this.moveLastPosition[1] = y;

			// @ts-ignore
			this.$el.addEventListener('mousemove', this.mouseMoveNodeWorkflow);
		},
		mouseUpMoveWorkflow (e: MouseEvent) {
			if (this.uiStore.nodeViewMoveInProgress === false) {
				// If it is not active return directly.
				// Else normal node dragging will not work.
				return;
			}

			// @ts-ignore
			this.$el.removeEventListener('mousemove', this.mouseMoveNodeWorkflow);

			this.uiStore.nodeViewMoveInProgress = false;

			// 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.uiStore.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
				// comes back unpressed.
				// @ts-ignore
				this.mouseUp(e);
				return;
			}

			this.moveWorkflow(e);
		},
	},
});