[gnome-shell/wip/grab-helper-top-panel: 13/20] searchDisplay, appDisplay: Use ClutterPanAction for re-swipe scrolling

[Jasper St. Pierre <jstpierre src gnome org>]

commit 32502af6527e9f8bcaa2aa1d6dc5d0013cac5d6e
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sun Nov 25 23:33:44 2012 -0500

    searchDisplay, appDisplay: Use ClutterPanAction for re-swipe scrolling
    
    The sooner we can kill off the custom overview swipe scroll code, the
    better.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=689062

 js/ui/appDisplay.js    |   20 +++++++++-----------
 js/ui/searchDisplay.js |   19 ++++++++++---------
 2 files changed, 19 insertions(+), 20 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 300c7e7..6ff8cb1 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -48,18 +48,16 @@ const AlphabeticalView = new Lang.Class({
                                          style_class: 'vfade' });
         this.actor.add_actor(box);
         this.actor.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
-        this.actor.connect('notify::mapped', Lang.bind(this,
-            function() {
-                if (!this.actor.mapped)
-                    return;
-
-                let adjustment = this.actor.vscroll.adjustment;
-                let direction = Overview.SwipeScrollDirection.VERTICAL;
-                Main.overview.setScrollAdjustment(adjustment, direction);
+        let action = new Clutter.PanAction({ interpolate: true });
+        action.connect('pan', Lang.bind(this, this._onPan));
+        this.actor.add_action(action);
+    },
 
-                // Reset scroll on mapping
-                adjustment.value = 0;
-            }));
+    _onPan: function(action) {
+        let [dist, dx, dy] = action.get_motion_delta(0);
+        let adjustment = this.actor.vscroll.adjustment;
+        adjustment.value -= (dy / this.actor.height) * adjustment.page_size;
+        return false;
     },
 
     removeAll: function() {
diff --git a/js/ui/searchDisplay.js b/js/ui/searchDisplay.js
index 5a914bd..7460310 100644
--- a/js/ui/searchDisplay.js
+++ b/js/ui/searchDisplay.js
@@ -194,15 +194,9 @@ const SearchResults = new Lang.Class({
                                      expand: true,
                                      x_align: St.Align.START,
                                      y_align: St.Align.START });
-        this.actor.connect('notify::mapped', Lang.bind(this,
-            function() {
-                if (!this.actor.mapped)
-                    return;
-
-                let adjustment = scrollView.vscroll.adjustment;
-                let direction = Overview.SwipeScrollDirection.VERTICAL;
-                Main.overview.setScrollAdjustment(adjustment, direction);
-            }));
+        let action = new Clutter.PanAction({ interpolate: true });
+        action.connect('pan', Lang.bind(this, this._onPan));
+        this.actor.add_action(action);
 
         this._statusText = new St.Label({ style_class: 'search-statustext' });
         this._statusBin = new St.Bin({ x_align: St.Align.MIDDLE,
@@ -219,6 +213,13 @@ const SearchResults = new Lang.Class({
         this._defaultResult = null;
     },
 
+    _onPan: function(action) {
+        let [dist, dx, dy] = action.get_motion_delta(0);
+        let adjustment = this.actor.vscroll.adjustment;
+        adjustment.value -= (dy / this.actor.height) * adjustment.page_size;
+        return false;
+    },
+
     createProviderMeta: function(provider) {
         let providerBox = new St.BoxLayout({ style_class: 'search-section',
                                              vertical: true });