[gnome-shell/gbsneto/pagination: 59/70] appDisplay: Move child focus handling to IconGrid

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 562f575d351250c3f58dd6ad45cbbb82d5118b36
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue May 19 15:34:11 2020 -0300

    appDisplay: Move child focus handling to IconGrid
    
    The icon grid is always paginated, so the app grid code doesn't need
    to behave differently in the FolderView and AppDisplay.
    
    Move the keyboard handling to IconGrid itself, and remove the now dead
    code from AppDisplay.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1271

 js/ui/appDisplay.js | 15 ---------------
 js/ui/iconGrid.js   | 13 +++++++++++--
 2 files changed, 11 insertions(+), 17 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 3c50d4dfd7..02b41f432a 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -121,9 +121,6 @@ var BaseAppView = GObject.registerClass({
         super._init(params);
 
         this._grid = new IconGrid.IconGrid();
-        this._grid.connect('child-focused', (grid, actor) => {
-            this._childFocused(actor);
-        });
         // Standard hack for ClutterBinLayout
         this._grid.x_expand = true;
 
@@ -141,10 +138,6 @@ var BaseAppView = GObject.registerClass({
         });
     }
 
-    _childFocused(_actor) {
-        // Nothing by default
-    }
-
     _redisplay() {
         let oldApps = this._orderedItems.slice();
         let oldAppIds = oldApps.map(icon => icon.id);
@@ -697,10 +690,6 @@ class AppDisplay extends BaseAppView {
         });
     }
 
-    _childFocused(icon) {
-        let itemPage = this._grid.getItemPage(icon);
-        this.goToPage(itemPage);
-    }
 
     // Called before allocation to calculate dynamic spacing
     adaptToSize(width, height) {
@@ -1022,10 +1011,6 @@ class FolderView extends BaseAppView {
         super.vfunc_allocate(box);
     }
 
-    _childFocused(actor) {
-        Util.ensureActorVisibleInScrollView(this._scrollView, actor);
-    }
-
     // Overridden from BaseAppView
     animate(animationDirection) {
         this._grid.animatePulse(animationDirection);
diff --git a/js/ui/iconGrid.js b/js/ui/iconGrid.js
index a0935d5950..dbb5cf3fa8 100644
--- a/js/ui/iconGrid.js
+++ b/js/ui/iconGrid.js
@@ -1144,7 +1144,6 @@ var IconGrid = GObject.registerClass({
     Signals: {
         'pages-changed': {},
         'animation-done': {},
-        'child-focused': { param_types: [Clutter.Actor.$gtype] },
     },
 }, class IconGrid extends St.Viewport {
     _init(layoutParams = {}) {
@@ -1200,7 +1199,9 @@ var IconGrid = GObject.registerClass({
     }
 
     _childAdded(grid, child) {
-        child._iconGridKeyFocusInId = child.connect('key-focus-in', actor => this.emit('child-focused', 
actor));
+        child._iconGridKeyFocusInId = child.connect('key-focus-in', () => {
+            this._ensureItemIsVisible(child);
+        });
 
         child._paintVisible = child.opacity > 0;
         child._opacityChangedId = child.connect('notify::opacity', () => {
@@ -1211,6 +1212,14 @@ var IconGrid = GObject.registerClass({
         });
     }
 
+    _ensureItemIsVisible(item) {
+        if (!this.contains(item))
+            throw new Error(`${item} is not a child of IconGrid`);
+
+        const itemPage = this.layout_manager.getItemPage(item);
+        this.goToPage(itemPage);
+    }
+
     _setGridMode(modeIndex) {
         if (this._currentMode === modeIndex)
             return;