[gnome-shell/wip/swarm: 2/8] viewSelector: Allow different animation types



commit 0ea87c69a53a7807bf2be433ac37f054cdf126df
Author: Carlos Soriano <carlos soriano89 gmail com>
Date:   Tue Jun 17 19:10:54 2014 +0200

    viewSelector: Allow different animation types
    
    Make viewSelector able to manage different kind of animations for pages.
    This is necessary for the upcoming patch to animate AllView and
    FrequentView.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734726

 js/ui/viewSelector.js |   57 +++++++++++++++++++++++++++++++-----------------
 1 files changed, 37 insertions(+), 20 deletions(-)
---
diff --git a/js/ui/viewSelector.js b/js/ui/viewSelector.js
index 80c3035..e0de436 100644
--- a/js/ui/viewSelector.js
+++ b/js/ui/viewSelector.js
@@ -371,18 +371,37 @@ const ViewSelector = new Lang.Class({
         return page;
     },
 
-    _fadePageIn: function(oldPage) {
-        if (oldPage)
-            oldPage.hide();
+    _fadePageIn: function(page) {
+        Tweener.addTween(page,
+                         { opacity: 255,
+                           time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
+                           transition: 'easeOutQuad'
+                         });
+    },
 
-        this.emit('page-empty');
+    _fadePageOut: function(page, onComplete) {
+        Tweener.addTween(page,
+                         { opacity: 0,
+                           time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
+                           transition: 'easeOutQuad',
+                           onComplete: Lang.bind(this, onComplete)
+                         });
+    },
 
-        this._activePage.show();
-        Tweener.addTween(this._activePage,
-            { opacity: 255,
-              time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
-              transition: 'easeOutQuad'
-            });
+    _animateIn: function(page) {
+        page.show();
+
+        this._fadePageIn(page);
+    },
+
+    _animateOut: function(page, onComplete) {
+        this._fadePageOut(page, onComplete);
+    },
+
+    _hidePageAndSyncEmpty: function(page) {
+        if (page)
+            page.hide();
+        this.emit('page-empty');
     },
 
     _showPage: function(page) {
@@ -396,18 +415,16 @@ const ViewSelector = new Lang.Class({
         this._activePage = page;
         this.emit('page-changed');
 
+        let animateActivePage = Lang.bind(this,
+            function() {
+                this._hidePageAndSyncEmpty(oldPage);
+                this._animateIn(this._activePage);
+            });
+
         if (oldPage)
-            Tweener.addTween(oldPage,
-                             { opacity: 0,
-                               time: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME,
-                               transition: 'easeOutQuad',
-                               onComplete: Lang.bind(this,
-                                   function() {
-                                       this._fadePageIn(oldPage);
-                                   })
-                             });
+            this._animateOut(oldPage, animateActivePage)
         else
-            this._fadePageIn();
+            animateActivePage();
     },
 
     _a11yFocusPage: function(page) {


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