[gnome-shell/gbsneto/icon-grid-part2: 7/10] allView: Remove icon from folder when dropping outside



commit 5a8b66536bde05ccd489c752e4da7c282dce2c4e
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Jun 29 01:26:08 2019 -0300

    allView: Remove icon from folder when dropping outside
    
    When dropping an app icon to outside the folder, remove the
    app from that folder. GNOME Shell is already smart enough
    to figure out the setting changes and update the icons.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/603

 js/ui/appDisplay.js | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 8fd6cd587..3e4a15457 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -731,6 +731,38 @@ var AllView = class AllView extends BaseAppView {
         }
     }
 
+    _canDropAt(source) {
+        if (!(source instanceof AppIcon))
+            return false;
+
+        if (!global.settings.is_writable('favorite-apps'))
+            return false;
+
+        if (!(source.view instanceof FolderView))
+            return false;
+
+        return true;
+    }
+
+    handleDragOver(source, actor, x, y, time) {
+        if (!this._canDropAt(source))
+            return DND.DragMotionResult.NO_DROP;
+
+        return DND.DragMotionResult.MOVE_DROP;
+    }
+
+    acceptDrop(source, actor, x, y, time) {
+        if (!this._canDropAt(source))
+            return false;
+
+        source.view.removeApp(source.app);
+
+        if (this._currentPopup)
+            this._currentPopup.popdown();
+
+        return true;
+    }
+
     inhibitEventBlocker() {
         this._nEventBlockerInhibits++;
         this._eventBlocker.visible = this._nEventBlockerInhibits == 0;
@@ -1248,6 +1280,19 @@ var FolderView = class FolderView extends BaseAppView {
 
         return apps;
     }
+
+    removeApp(app) {
+        let folderApps = this._folder.get_strv('apps');
+        let index = folderApps.indexOf(app.id);
+        if (index < 0)
+            return false;
+
+        folderApps.splice(index, 1);
+
+        this._folder.set_strv('apps', folderApps);
+
+        return true;
+    }
 };
 
 var FolderIcon = class FolderIcon {


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