[gnome-maps/gnome-3-28] mapMarker: Enable selecting markers with touch

[Marcus Lundblad <mlundblad src gnome org>]

commit d3dae3b70d90ef8d4233d574aec72f6980f8825e
Author: Marcus Lundblad <ml update uu se>
Date:   Wed Apr 11 23:18:39 2018 +0200

    mapMarker: Enable selecting markers with touch
    
    Make markers selectable by touch. Also make touch events
    (panning) on the background map view de-select them to
    be consistence with the normal behaviour with mouse-based
    events.
    
    Closes #11

 src/mapMarker.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/src/mapMarker.js b/src/mapMarker.js
index f73fc91..3e61473 100644
--- a/src/mapMarker.js
+++ b/src/mapMarker.js
@@ -72,6 +72,7 @@ var MapMarker = GObject.registerClass({
             this._view = this._mapView.view;
             this.connect('notify::selected', this._onMarkerSelected.bind(this));
             this.connect('button-press', this._onButtonPress.bind(this));
+            this.connect('touch-event', this._onTouchEvent.bind(this));
 
             // Some markers are draggable, we want to sync the marker location and
             // the location saved in the GeocodePlace
@@ -158,6 +159,13 @@ var MapMarker = GObject.registerClass({
         }
     }
 
+    _onTouchEvent(marker, event) {
+        if (event.type() == Clutter.EventType.TOUCH_BEGIN)
+            this.selected = true;
+
+        return Clutter.EVENT_STOP;
+    }
+
     _translateMarkerPosition() {
         this.set_translation(-this.anchor.x, -this.anchor.y, 0);
     }
@@ -270,6 +278,9 @@ var MapMarker = GObject.registerClass({
                 this.selected = false;
         });
 
+        let viewTouchEventSignalId =
+            this._view.connect('touch-event', () => this.set_selected(false));
+
         let goingToSignalId = this._mapView.connect('going-to', () => {
             this.set_selected(false);
         });
@@ -288,6 +299,7 @@ var MapMarker = GObject.registerClass({
             this._mapView.disconnect(markerSelectedSignalId);
             this._mapView.disconnect(goingToSignalId);
             this._view.disconnect(buttonPressSignalId);
+            this._view.disconnect(viewTouchEventSignalId);
             this.disconnect(parentSetSignalId);
             this.disconnect(dragMotionSignalId);