From ff5063cb006a3723f422017d44787cfd908bb147 Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Thu, 28 Jan 2021 00:06:12 +0100
Subject: [PATCH 2/5] Add gesture-inhibitor extension

This extension may disable default GNOME Shell gestures.
---
 extensions/gesture-inhibitor/extension.js     | 79 +++++++++++++++++++
 extensions/gesture-inhibitor/meson.build      |  8 ++
 extensions/gesture-inhibitor/metadata.json.in | 12 +++
 ...l.extensions.gesture-inhibitor.gschema.xml | 25 ++++++
 meson.build                                   |  1 +
 5 files changed, 125 insertions(+)
 create mode 100644 extensions/gesture-inhibitor/extension.js
 create mode 100644 extensions/gesture-inhibitor/meson.build
 create mode 100644 extensions/gesture-inhibitor/metadata.json.in
 create mode 100644 extensions/gesture-inhibitor/org.gnome.shell.extensions.gesture-inhibitor.gschema.xml

diff --git a/extensions/gesture-inhibitor/extension.js b/extensions/gesture-inhibitor/extension.js
new file mode 100644
index 00000000..872020ba
--- /dev/null
+++ b/extensions/gesture-inhibitor/extension.js
@@ -0,0 +1,79 @@
+// SPDX-FileCopyrightText: 2021 Carlos Garnacho <carlosg@gnome.org>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+
+import Clutter from 'gi://Clutter';
+import Gio from 'gi://Gio';
+import St from 'gi://St';
+
+import * as Main from 'resource:///org/gnome/shell/ui/main.js';
+
+import {AppSwitchAction} from 'resource:///org/gnome/shell/ui/windowManager.js';
+import {EdgeDragAction} from 'resource:///org/gnome/shell/ui/edgeDragAction.js';
+
+import {Extension} from 'resource:///org/gnome/shell/extensions/extension.js';
+
+export default class GestureInhibitorExtension extends Extension {
+    constructor(metadata) {
+        super(metadata);
+
+        let actions = global.stage.get_actions();
+
+        actions.forEach(a => {
+            if (a instanceof AppSwitchAction)
+                this._appSwitch = a;
+            else if (a instanceof EdgeDragAction &&
+                 a._side === St.Side.BOTTOM)
+                this._showOsk = a;
+            else if (a instanceof EdgeDragAction &&
+                 a._side === St.Side.TOP)
+                this._unfullscreen = a;
+        });
+
+        this._map = [
+            {setting: 'overview', action: Main.overview._swipeTracker},
+            {setting: 'app-switch', action: this._appSwitch},
+            {setting: 'show-osk', action: this._showOsk},
+            {setting: 'unfullscreen', action: this._unfullscreen},
+            {setting: 'workspace-switch', action: Main.wm._workspaceAnimation._swipeTracker},
+        ];
+
+        this._enabledDesc = Object.getOwnPropertyDescriptor(
+            Clutter.ActorMeta.prototype, 'enabled');
+    }
+
+    _overrideEnabledSetter(obj, set) {
+        if (!(obj instanceof Clutter.ActorMeta))
+            return;
+
+        const desc = set
+            ? {...this._enabledDesc, set}
+            : {...this._enabledDesc};
+        Object.defineProperty(obj, 'enabled', desc);
+    }
+
+    enable() {
+        const settings = this.getSettings();
+
+        this._map.forEach(m => {
+            settings.bind(m.setting, m.action, 'enabled',
+                Gio.SettingsBindFlags.DEFAULT);
+
+            this._overrideEnabledSetter(m.action, function (value) {
+                if (settings.get_boolean(m.setting)) {
+                    // eslint-disable-next-line no-invalid-this
+                    this.set_enabled(value);
+                }
+            });
+        });
+    }
+
+    disable() {
+        this._map.forEach(m => {
+            Gio.Settings.unbind(m.action, 'enabled');
+            this._overrideEnabledSetter(m.action);
+            m.action.enabled = true;
+        });
+    }
+}
diff --git a/extensions/gesture-inhibitor/meson.build b/extensions/gesture-inhibitor/meson.build
new file mode 100644
index 00000000..fdad5cc8
--- /dev/null
+++ b/extensions/gesture-inhibitor/meson.build
@@ -0,0 +1,8 @@
+extension_data += configure_file(
+  input: metadata_name + '.in',
+  output: metadata_name,
+  configuration: metadata_conf
+)
+
+# extension_sources += files('prefs.js')
+extension_schemas += files(metadata_conf.get('gschemaname') + '.gschema.xml')
diff --git a/extensions/gesture-inhibitor/metadata.json.in b/extensions/gesture-inhibitor/metadata.json.in
new file mode 100644
index 00000000..37d6a117
--- /dev/null
+++ b/extensions/gesture-inhibitor/metadata.json.in
@@ -0,0 +1,12 @@
+{
+ "uuid": "@uuid@",
+ "extension-id": "@extension_id@",
+ "settings-schema": "@gschemaname@",
+ "gettext-domain": "@gettext_domain@",
+ "name": "Gesture Inhibitor",
+ "description": "Makes touchscreen gestures optional.",
+ "shell-version": [ "@shell_current@" ],
+ "original-authors": [ "cgarnach@redhat.com" ],
+ "url": "@url@"
+}
+
diff --git a/extensions/gesture-inhibitor/org.gnome.shell.extensions.gesture-inhibitor.gschema.xml b/extensions/gesture-inhibitor/org.gnome.shell.extensions.gesture-inhibitor.gschema.xml
new file mode 100644
index 00000000..b06d027a
--- /dev/null
+++ b/extensions/gesture-inhibitor/org.gnome.shell.extensions.gesture-inhibitor.gschema.xml
@@ -0,0 +1,25 @@
+<schemalist>
+  <schema id="org.gnome.shell.extensions.gesture-inhibitor" path="/org/gnome/shell/extensions/gesture-inhibitor/">
+    <key name="show-osk" type="b">
+      <default>true</default>
+      <summary>Show OSK gesture</summary>
+    </key>
+    <key name="overview" type="b">
+      <default>true</default>
+      <summary>Show Overview gesture</summary>
+    </key>
+    <key name="app-switch" type="b">
+      <default>true</default>
+      <summary>Application switch gesture</summary>
+    </key>
+    <key name="workspace-switch" type="b">
+      <default>true</default>
+      <summary>Workspace switch gesture</summary>
+    </key>
+    <key name="unfullscreen" type="b">
+      <default>true</default>
+      <summary>Unfullscreen gesture</summary>
+    </key>
+  </schema>
+</schemalist>
+
diff --git a/meson.build b/meson.build
index a7294c18..e36d948d 100644
--- a/meson.build
+++ b/meson.build
@@ -51,6 +51,7 @@ default_extensions += [
 all_extensions = default_extensions
 all_extensions += [
   'auto-move-windows',
+  'gesture-inhibitor',
   'native-window-placement',
   'user-theme'
 ]
-- 
2.45.2