fix: text selection wasn't working for non draggable, sortable or res…

…izable elements

src/draggable/draggable.js

@@ -251,6 +251,7 @@ export default class Draggable {
 		this.addPlugin(new AutoScroll(this));
 		this.addPlugin(new ConnectToSortable(this));
 		this.addSensor(new MouseSensor(this));
+		document.addEventListener('mouse:down', this.onMouseDown);
 		document.addEventListener('mouse:start', this.onDragStart);
 		document.addEventListener('mouse:move', this.onDragMove);
 		document.addEventListener('mouse:stop', this.onDragStop);
@@ -272,22 +273,28 @@ export default class Draggable {
 		);
 	};
 
-	onDragStart = event => {
+	onMouseDown = event => {
 		const sensorEvent = event.detail;
 
 		if (sensorEvent.caller !== this) {
 			return;
 		}
-
 		if (this.disabled || this.reverting) {
 			sensorEvent.cancel();
 			return;
 		}
-
 		if (!this.isInsideHandle(sensorEvent)) {
 			sensorEvent.cancel();
 			return;
 		}
+	};
+
+	onDragStart = event => {
+		const sensorEvent = event.detail;
+
+		if (sensorEvent.caller !== this) {
+			return;
+		}
 
 		blurActiveElement(sensorEvent);
 

src/resizable/resizable.js

@@ -180,9 +180,7 @@ export default class Resizable extends Draggable {
 		this.addPlugin(new ResizeAnimate(this));
 		this.addPlugin(new ResizeGhost(this));
 		this.addSensor(new MouseSensor(this));
-		document.addEventListener('mouse:down', () => {
-			this.pressing = true;
-		});
+		document.addEventListener('mouse:down', this.onMouseDown);
 		document.addEventListener('mouse:stop', () => {
 			this.pressing = false;
 		});
@@ -231,24 +229,31 @@ export default class Resizable extends Draggable {
 		);
 	};
 
-	onDragStart = event => {
-		let handleCursor = null;
-		const { aspectRatio } = this.options;
+	onMouseDown = event => {
 		const sensorEvent = event.detail;
 
 		if (sensorEvent.caller !== this || !this.currentHandle || !this.currentDirection) {
 			return;
 		}
-
 		if (this.disabled) {
 			sensorEvent.cancel();
 			return;
 		}
-
 		if (!this.isInsideHandle(sensorEvent)) {
 			sensorEvent.cancel();
 			return;
 		}
+		this.pressing = true;
+	};
+
+	onDragStart = event => {
+		let handleCursor = null;
+		const { aspectRatio } = this.options;
+		const sensorEvent = event.detail;
+
+		if (sensorEvent.caller !== this || !this.currentHandle || !this.currentDirection) {
+			return;
+		}
 
 		this.resizing = true;
 		this.helper = this.createHelper(sensorEvent);

src/sensor/mouse-event.js

@@ -2,6 +2,8 @@ import SensorEvent from './sensor-event';
 
 export class MouseDownEvent extends SensorEvent {
 	static type = 'mouse:down';
+
+	static cancelable = true;
 }
 
 export class MouseStartEvent extends SensorEvent {

src/sensor/mouse-sensor.js

@@ -45,18 +45,21 @@ export default class MouseSensor extends Sensor {
 			this.onMouseUp(event);
 		}
 
+		const mouseDown = new MouseDownEvent({
+			pageX: event.pageX,
+			pageY: event.pageY,
+			target: event.target,
+			caller: this.caller,
+			originalEvent: event
+		});
+
 		this.pageX = event.pageX;
 		this.pageY = event.pageY;
 		this.startEvent = event;
-		this.trigger(
-			new MouseDownEvent({
-				pageX: event.pageX,
-				pageY: event.pageY,
-				target: event.target,
-				caller: this.caller,
-				originalEvent: event
-			})
-		);
+		this.trigger(mouseDown);
+		if (mouseDown.canceled) {
+			return;
+		}
 
 		document.addEventListener('dragstart', preventDefault);
 		document.addEventListener('mousemove', this.checkThresholds);

src/sortable/sortable.js

@@ -171,6 +171,7 @@ export default class Sortable extends Draggable {
 		this.addPlugin(new StyleDecorator(this, 'zIndex'));
 		this.addPlugin(new AutoScroll(this));
 		this.addSensor(new MouseSensor(this));
+		document.addEventListener('mouse:down', this.onMouseDown);
 		document.addEventListener('mouse:start', this.onDragStart);
 		document.addEventListener('mouse:move', this.onDragMove);
 		document.addEventListener('mouse:stop', this.onDragStop);
@@ -187,6 +188,23 @@ export default class Sortable extends Draggable {
 		);
 	};
 
+	onMouseDown = event => {
+		const sensorEvent = event.detail;
+
+		if (sensorEvent.caller !== this) {
+			return;
+		}
+
+		if (this.disabled || this.reverting) {
+			sensorEvent.cancel();
+			return;
+		}
+
+		if (!this.findItem(sensorEvent)) {
+			sensorEvent.cancel();
+		}
+	};
+
 	onDragStart = (event, noActivation = false, forceOwnership = false) => {
 		const sensorEvent = event.detail;