diff --git a/js/js-resources.gresource.xml b/js/js-resources.gresource.xml
index 32df2dd85..83a1f2eae 100644
--- a/js/js-resources.gresource.xml
+++ b/js/js-resources.gresource.xml
@@ -41,6 +41,7 @@
ui/dash.js
ui/dateMenu.js
ui/dnd.js
+ ui/edgeDragAction.js
ui/endSessionDialog.js
ui/environment.js
ui/extensionDownloader.js
diff --git a/js/ui/edgeDragAction.js b/js/ui/edgeDragAction.js
new file mode 100644
index 000000000..ad1489db4
--- /dev/null
+++ b/js/ui/edgeDragAction.js
@@ -0,0 +1,76 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+
+const Lang = imports.lang;
+const Signals = imports.signals;
+const Meta = imports.gi.Meta;
+const Clutter = imports.gi.Clutter;
+const St = imports.gi.St;
+
+let EDGE_THRESHOLD = 20;
+let DRAG_DISTANCE = 80;
+
+const EdgeDragAction = new Lang.Class({
+ Name: 'EdgeDragAction',
+ Extends: Clutter.GestureAction,
+
+ _init : function(side) {
+ this.parent();
+ this._side = side;
+ this.set_n_touch_points (1);
+ global.display.connect('grab-op-begin', Lang.bind(this, this.cancel));
+ global.display.connect('grab-op-end', Lang.bind(this, this.cancel));
+ },
+
+ _getMonitorRect : function (x, y) {
+ let rect = new Meta.Rectangle({ x: x - 1, y: y - 1, width: 1, height: 1 });
+ let monitorIndex = global.screen.get_monitor_index_for_rect(rect);
+
+ return global.screen.get_monitor_geometry(monitorIndex);
+ },
+
+ vfunc_gesture_prepare : function(action, actor) {
+ if (this.get_n_current_points() == 0)
+ return false;
+
+ let [x, y] = this.get_press_coords(0);
+ let monitorRect = this._getMonitorRect(x, y);
+
+ return ((this._side == St.Side.LEFT && x < monitorRect.x + EDGE_THRESHOLD) ||
+ (this._side == St.Side.RIGHT && x > monitorRect.x + monitorRect.width - EDGE_THRESHOLD) ||
+ (this._side == St.Side.TOP && y < monitorRect.y + EDGE_THRESHOLD) ||
+ (this._side == St.Side.BOTTOM && y > monitorRect.y + monitorRect.height - EDGE_THRESHOLD));
+ },
+
+ vfunc_gesture_progress : function (action, actor) {
+ let [startX, startY] = this.get_press_coords(0);
+ let [x, y] = this.get_motion_coords(0);
+ let offsetX = Math.abs (x - startX);
+ let offsetY = Math.abs (y - startY);
+
+ if (offsetX < EDGE_THRESHOLD && offsetY < EDGE_THRESHOLD)
+ return true;
+
+ if ((offsetX > offsetY &&
+ (this._side == St.Side.TOP || this._side == St.Side.BOTTOM)) ||
+ (offsetY > offsetX &&
+ (this._side == St.Side.LEFT || this._side == St.Side.RIGHT))) {
+ this.cancel();
+ return false;
+ }
+
+ return true;
+ },
+
+ vfunc_gesture_end : function (action, actor) {
+ let [startX, startY] = this.get_press_coords(0);
+ let [x, y] = this.get_motion_coords(0);
+ let monitorRect = this._getMonitorRect(startX, startY);
+
+ if ((this._side == St.Side.TOP && y > monitorRect.y + DRAG_DISTANCE) ||
+ (this._side == St.Side.BOTTOM && y < monitorRect.y + monitorRect.height - DRAG_DISTANCE) ||
+ (this._side == St.Side.LEFT && x > monitorRect.x + DRAG_DISTANCE) ||
+ (this._side == St.Side.RIGHT && x < monitorRect.x + monitorRect.width - DRAG_DISTANCE))
+ this.emit('activated');
+ }
+});
+Signals.addSignalMethods(EdgeDragAction.prototype);