app-cache: add ShellAppCache for GAppInfo caching

This caches GAppInfo so that the compositor thread does not have to perform
costly disk access to load them. Instead, they are loaded from a worker
thread and the ShellAppCache notifies of changes.

To simplfy maintenace, ShellAppCache manages this directly and the
existing ShellAppSystem wraps the cache. We may want to graft these
together in the future, but now it provides the easiest way to backport
changes to older Shell releases.

Another source of compositor thread disk access was in determining the
name for an application directory. Translations are provided via GKeyFile
installed in "desktop-directories". Each time we would build the name
for a label (or update it) we would have to load all of these files.

Instead, the ShellAppCache caches that information and updates the cache
in bulk when those change. We can reduce this in the future to do less
work, but chances are these will come together anyway so that is probably
worth fixing if we every come across it.

https://gitlab.gnome.org/GNOME/gnome-shell/issues/2282

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "subprojects/gvc"]
 	path = subprojects/gvc
-	url = https://git.gnome.org/browse/libgnome-volume-control
+	url = https://gitlab.gnome.org/GNOME/libgnome-volume-control.git

NEWS

@@ -1,3 +1,30 @@
+3.28.4
+======
+* Fix wrong window positions in overview on wayland [Marco; #776588]
+* overview: Fix handling of confirmation dialogs on wayland [verdre; !180]
+* Avoid some full relayout/redraws [Carlos; !197]
+* Keep workspace switcher slid out when workspaces are in use [Florian; !161]
+* Cancel search on overview hiding [Marco; !205]
+* Fix disappearing network icon [Iain; #140]
+* Improve performance of app icon animations [Daniel; !253]
+* notifications: Support icon theme names in 'image-path' hint [Marco; !285]
+* Avoid focus changes when updating keyboard options [Takao; #391]
+* Fix unresponsive-app dialog blocking input in other windows [Florian; #273]
+* Fix ellipsization in dialog subtitles/bodies [Marco; !531]
+* Misc. bug fixes [Marco, Andrea, Florian, Jasper, Sam, verdre, Jonas,
+  Cosimo, Carlos; #792681, #372, !112, !162, #414, #663461, #788882, #787260,
+  !188, #791233, #602, #632, !305, !286, !314, #781, #693, #618, #430, #799,
+  #783, !293, #298, #1015, #539, #1270]
+
+Contributors:
+  Jonas Ådahl, Andrea Azzarone, Cosimo Cecchi, Takao Fujiwara, Carlos Garnacho,
+  Iain Lane, Florian Müllner, Georges Basile Stavracas Neto, Jasper St. Pierre,
+  Sam Spilsbury, Ray Strode, Will Thompson, Marco Trevisan (Treviño), verdre,
+  Daniel van Vugt
+
+Translators:
+  Marek Černocký [cs]
+
 3.28.3
 ======
 * Fix lagging pointer when zoomed [Daniel; #682013]

data/gnome-shell-osk-layouts.gresource.xml

@@ -6,6 +6,7 @@
     <file>be.json</file>
     <file>bg.json</file>
     <file>by.json</file>
+    <file>ca.json</file>
     <file>cz.json</file>
     <file>de.json</file>
     <file>dk.json</file>

data/osk-layouts/ca.json

@@ -0,0 +1,599 @@
+{
+  "levels": [
+    {
+      "level": "",
+      "mode": "default",
+      "rows": [
+        [
+          [
+            "q"
+          ],
+          [
+            "w"
+          ],
+          [
+            "e",
+            "é",
+            "è",
+            "ê",
+            "ë",
+            "%",
+            "ę",
+            "ė",
+            "ē"
+          ],
+          [
+            "r"
+          ],
+          [
+            "t"
+          ],
+          [
+            "y",
+            "%",
+            "ÿ"
+          ],
+          [
+            "u",
+            "ù",
+            "û",
+            "%",
+            "ü",
+            "ú",
+            "ū"
+          ],
+          [
+            "i",
+            "î",
+            "%",
+            "ï",
+            "ì",
+            "í",
+            "į",
+            "ī"
+          ],
+          [
+            "o",
+            "ô",
+            "œ",
+            "%",
+            "ö",
+            "ò",
+            "ó",
+            "õ",
+            "ø",
+            "ō",
+            "º"
+          ],
+          [
+            "p"
+          ]
+        ],
+        [
+          [
+            "a",
+            "à",
+            "â",
+            "%",
+            "æ",
+            "á",
+            "ä",
+            "ã",
+            "å",
+            "ā",
+            "ª"
+          ],
+          [
+            "s"
+          ],
+          [
+            "d"
+          ],
+          [
+            "f"
+          ],
+          [
+            "g"
+          ],
+          [
+            "h"
+          ],
+          [
+            "j"
+          ],
+          [
+            "k"
+          ],
+          [
+            "l"
+          ]
+        ],
+        [
+          [
+            "z"
+          ],
+          [
+            "x"
+          ],
+          [
+            "c",
+            "ç",
+            "ć",
+            "č"
+          ],
+          [
+            "v"
+          ],
+          [
+            "b"
+          ],
+          [
+            "n"
+          ],
+          [
+            "m"
+          ]
+        ],
+        [
+          [
+            ","
+          ],
+          [
+            " "
+          ],
+          [
+            ".",
+            "#",
+            "!",
+            ",",
+            "?",
+            "-",
+            ":",
+            "'",
+            "@"
+          ]
+        ]
+      ]
+    },
+    {
+      "level": "shift",
+      "mode": "latched",
+      "rows": [
+        [
+          [
+            "Q"
+          ],
+          [
+            "W"
+          ],
+          [
+            "E",
+            "É",
+            "È",
+            "Ê",
+            "Ë",
+            "%",
+            "Ę",
+            "Ė",
+            "Ē"
+          ],
+          [
+            "R"
+          ],
+          [
+            "T"
+          ],
+          [
+            "Y",
+            "%",
+            "Ÿ"
+          ],
+          [
+            "U",
+            "Ù",
+            "Û",
+            "%",
+            "Ü",
+            "Ú",
+            "Ū"
+          ],
+          [
+            "I",
+            "Î",
+            "%",
+            "Ï",
+            "Ì",
+            "Í",
+            "Į",
+            "Ī"
+          ],
+          [
+            "O",
+            "Ô",
+            "Œ",
+            "%",
+            "Ö",
+            "Ò",
+            "Ó",
+            "Õ",
+            "Ø",
+            "Ō",
+            "º"
+          ],
+          [
+            "P"
+          ]
+        ],
+        [
+          [
+            "A",
+            "À",
+            "Â",
+            "%",
+            "Æ",
+            "Á",
+            "Ä",
+            "Ã",
+            "Å",
+            "Ā",
+            "ª"
+          ],
+          [
+            "S"
+          ],
+          [
+            "D"
+          ],
+          [
+            "F"
+          ],
+          [
+            "G"
+          ],
+          [
+            "H"
+          ],
+          [
+            "J"
+          ],
+          [
+            "K"
+          ],
+          [
+            "L"
+          ]
+        ],
+        [
+          [
+            "Z"
+          ],
+          [
+            "X"
+          ],
+          [
+            "C",
+            "Ç",
+            "Ć",
+            "Č"
+          ],
+          [
+            "V"
+          ],
+          [
+            "B"
+          ],
+          [
+            "N"
+          ],
+          [
+            "M"
+          ]
+        ],
+        [
+          [
+            ","
+          ],
+          [
+            " "
+          ],
+          [
+            ".",
+            "#",
+            "!",
+            ",",
+            "?",
+            "-",
+            ":",
+            "'",
+            "@"
+          ]
+        ]
+      ]
+    },
+    {
+      "level": "opt",
+      "mode": "locked",
+      "rows": [
+        [
+          [
+            "1",
+            "¹",
+            "½",
+            "⅓",
+            "¼",
+            "⅛"
+          ],
+          [
+            "2",
+            "²",
+            "⅔"
+          ],
+          [
+            "3",
+            "³",
+            "¾",
+            "⅜"
+          ],
+          [
+            "4",
+            "⁴"
+          ],
+          [
+            "5",
+            "⅝"
+          ],
+          [
+            "6"
+          ],
+          [
+            "7",
+            "⅞"
+          ],
+          [
+            "8"
+          ],
+          [
+            "9"
+          ],
+          [
+            "0",
+            "ⁿ",
+            "∅"
+          ]
+        ],
+        [
+          [
+            "@"
+          ],
+          [
+            "#"
+          ],
+          [
+            "$",
+            "¢",
+            "£",
+            "€",
+            "¥",
+            "₱"
+          ],
+          [
+            "%",
+            "‰"
+          ],
+          [
+            "&"
+          ],
+          [
+            "-",
+            "_",
+            "–",
+            "—",
+            "·"
+          ],
+          [
+            "+",
+            "±"
+          ],
+          [
+            "(",
+            "<",
+            "{",
+            "["
+          ],
+          [
+            ")",
+            ">",
+            "}",
+            "]"
+          ]
+        ],
+        [
+          [
+            "*",
+            "†",
+            "‡",
+            "★"
+          ],
+          [
+            "\"",
+            "“",
+            "”",
+            "«",
+            "»"
+          ],
+          [
+            "'",
+            "‘",
+            "’",
+            "‹",
+            "›"
+          ],
+          [
+            ":"
+          ],
+          [
+            ";"
+          ],
+          [
+            "!",
+            "¡"
+          ],
+          [
+            "?",
+            "¿"
+          ]
+        ],
+        [
+          [
+            "_"
+          ],
+          [
+            "/"
+          ],
+          [
+            " "
+          ],
+          [
+            ","
+          ],
+          [
+            ".",
+            "…"
+          ]
+        ]
+      ]
+    },
+    {
+      "level": "opt+shift",
+      "mode": "locked",
+      "rows": [
+        [
+          [
+            "~"
+          ],
+          [
+            "`"
+          ],
+          [
+            "|"
+          ],
+          [
+            "•",
+            "♪",
+            "♥",
+            "♠",
+            "♦",
+            "♣"
+          ],
+          [
+            "√"
+          ],
+          [
+            "Π",
+            "π"
+          ],
+          [
+            "÷"
+          ],
+          [
+            "×"
+          ],
+          [
+            "¶",
+            "§"
+          ],
+          [
+            "∆"
+          ]
+        ],
+        [
+          [
+            "£"
+          ],
+          [
+            "¢"
+          ],
+          [
+            "€"
+          ],
+          [
+            "¥"
+          ],
+          [
+            "^",
+            "↑",
+            "↓",
+            "←",
+            "→"
+          ],
+          [
+            "°",
+            "′",
+            "″"
+          ],
+          [
+            "=",
+            "≠",
+            "≈",
+            "∞"
+          ],
+          [
+            "{"
+          ],
+          [
+            "}"
+          ]
+        ],
+        [
+          [
+            "\\"
+          ],
+          [
+            "©"
+          ],
+          [
+            "®"
+          ],
+          [
+            "™"
+          ],
+          [
+            "℅"
+          ],
+          [
+            "["
+          ],
+          [
+            "]"
+          ]
+        ],
+        [
+          [
+            "<",
+            "‹",
+            "≤",
+            "«"
+          ],
+          [
+            ">",
+            "›",
+            "≥",
+            "»"
+          ],
+          [
+            " "
+          ],
+          [
+            ","
+          ],
+          [
+            ".",
+            "…"
+          ]
+        ]
+      ]
+    }
+  ],
+  "locale": "fr-CA",
+  "name": "French Canada"
+}

data/osk-layouts/fr.json

@@ -6,10 +6,20 @@
       "rows": [
         [
           [
-            "q"
+            "a",
+            "à",
+            "â",
+            "%",
+            "æ",
+            "á",
+            "ä",
+            "ã",
+            "å",
+            "ā",
+            "ª"
           ],
           [
-            "w"
+            "z"
           ],
           [
             "e",
@@ -71,17 +81,7 @@
         ],
         [
           [
-            "a",
-            "à",
-            "â",
-            "%",
-            "æ",
-            "á",
-            "ä",
-            "ã",
-            "å",
-            "ā",
-            "ª"
+            "q"
           ],
           [
             "s"
@@ -106,11 +106,14 @@
           ],
           [
             "l"
+          ],
+          [
+            "m"
           ]
         ],
         [
           [
-            "z"
+            "w"
           ],
           [
             "x"
@@ -131,7 +134,11 @@
             "n"
           ],
           [
-            "m"
+            "'",
+            "‘",
+            "’",
+            "‹",
+            "›"
           ]
         ],
         [
@@ -161,10 +168,20 @@
       "rows": [
         [
           [
-            "Q"
+            "A",
+            "À",
+            "Â",
+            "%",
+            "Æ",
+            "Á",
+            "Ä",
+            "Ã",
+            "Å",
+            "Ā",
+            "ª"
           ],
           [
-            "W"
+            "Z"
           ],
           [
             "E",
@@ -226,17 +243,7 @@
         ],
         [
           [
-            "A",
-            "À",
-            "Â",
-            "%",
-            "Æ",
-            "Á",
-            "Ä",
-            "Ã",
-            "Å",
-            "Ā",
-            "ª"
+            "Q"
           ],
           [
             "S"
@@ -261,11 +268,14 @@
           ],
           [
             "L"
+          ],
+          [
+            "M"
           ]
         ],
         [
           [
-            "Z"
+            "W"
           ],
           [
             "X"
@@ -286,7 +296,11 @@
             "N"
           ],
           [
-            "M"
+            "'",
+            "‘",
+            "’",
+            "‹",
+            "›"
           ]
         ],
         [
@@ -369,10 +383,10 @@
             "#"
           ],
           [
-            "$",
+            "€",
             "¢",
             "£",
-            "€",
+            "$",
             "¥",
             "₱"
           ],
@@ -511,13 +525,14 @@
             "£"
           ],
           [
+            "¥"
+          ],
+          [
+            "$",
             "¢"
           ],
           [
-            "€"
-          ],
-          [
-            "¥"
+            "¢"
           ],
           [
             "^",
@@ -594,6 +609,6 @@
       ]
     }
   ],
-  "locale": "fr-CA",
-  "name": "French Canada"
+  "locale": "fr",
+  "name": "French"
 }

js/gdm/authPrompt.js

@@ -242,11 +242,11 @@ var AuthPrompt = new Lang.Class({
         this.emit('prompted');
     },
 
-    _onVerificationFailed() {
+    _onVerificationFailed(userVerifier, canRetry) {
         this._queryingService = null;
         this.clear();
 
-        this.updateSensitivity(true);
+        this.updateSensitivity(canRetry);
         this.setActorInDefaultButtonWell(null);
         this.verificationStatus = AuthPromptStatus.VERIFICATION_FAILED;
     },
@@ -439,6 +439,7 @@ var AuthPrompt = new Lang.Class({
         this.verificationStatus = AuthPromptStatus.NOT_VERIFYING;
         this.cancelButton.reactive = true;
         this.nextButton.label = _("Next");
+        this._preemptiveAnswer = null;
 
         if (this._userVerifier)
             this._userVerifier.cancel();

js/gdm/util.js

@@ -534,12 +534,13 @@ var ShellUserVerifier = new Lang.Class({
     _verificationFailed(retry) {
         // For Not Listed / enterprise logins, immediately reset
         // the dialog
-        // Otherwise, we allow ALLOWED_FAILURES attempts. After that, we
-        // go back to the welcome screen.
+        // Otherwise, when in login mode we allow ALLOWED_FAILURES attempts.
+        // After that, we go back to the welcome screen.
 
         this._failCounter++;
         let canRetry = retry && this._userName &&
-            this._failCounter < this._settings.get_int(ALLOWED_FAILURES_KEY);
+            (this._reauthOnly ||
+             this._failCounter < this._settings.get_int(ALLOWED_FAILURES_KEY));
 
         if (canRetry) {
             if (!this.hasPendingMessages) {
@@ -562,7 +563,7 @@ var ShellUserVerifier = new Lang.Class({
             }
         }
 
-        this.emit('verification-failed');
+        this.emit('verification-failed', canRetry);
     },
 
     _onConversationStopped(client, serviceName) {

js/misc/ibusManager.js

@@ -205,7 +205,7 @@ var IBusManager = new Lang.Class({
         }
 
         this._ibus.set_global_engine_async(id, this._MAX_INPUT_SOURCE_ACTIVATION_TIME,
-                                           null, callback);
+                                           null, callback || null);
     },
 
     preloadEngines(ids) {

js/misc/objectManager.js

@@ -236,11 +236,12 @@ var ObjectManager = new Lang.Class({
     _onNameVanished() {
         let objectPaths = Object.keys(this._objects);
         for (let i = 0; i < objectPaths.length; i++) {
-            let object = this._objects[objectPaths];
+            let objectPath = objectPaths[i];
+            let object = this._objects[objectPath];
 
             let interfaceNames = Object.keys(object);
-            for (let j = 0; i < interfaceNames.length; i++) {
-                let interfaceName = interfaceNames[i];
+            for (let j = 0; j < interfaceNames.length; j++) {
+                let interfaceName = interfaceNames[j];
 
                 if (object[interfaceName])
                     this._removeInterface(objectPath, interfaceName);

js/ui/appDisplay.js

@@ -92,17 +92,8 @@ function _listsIntersect(a, b) {
 function _getFolderName(folder) {
     let name = folder.get_string('name');
 
-    if (folder.get_boolean('translate')) {
-        let keyfile = new GLib.KeyFile();
-        let path = 'desktop-directories/' + name;
-
-        try {
-            keyfile.load_from_data_dirs(path, GLib.KeyFileFlags.NONE);
-            name = keyfile.get_locale_string('Desktop Entry', 'Name', null);
-        } catch(e) {
-            return name;
-        }
-    }
+    if (folder.get_boolean('translate'))
+        return Shell.AppCache.get_default().translate_folder(name);
 
     return name;
 }
@@ -499,7 +490,7 @@ var AllView = new Lang.Class({
     },
 
     _loadApps() {
-        let apps = Gio.AppInfo.get_all().filter(appInfo => {
+        let apps = Shell.AppCache.get_default().get_all().filter(appInfo => {
             try {
                 let id = appInfo.get_id(); // catch invalid file encodings
             } catch(e) {
@@ -1329,7 +1320,7 @@ var FolderIcon = new Lang.Class({
         folderApps.forEach(addAppId);
 
         let folderCategories = this._folder.get_strv('categories');
-        Gio.AppInfo.get_all().forEach(appInfo => {
+        Shell.AppCache.get_default().get_all().forEach(appInfo => {
             let appCategories = _getCategories(appInfo);
             if (!_listsIntersect(folderCategories, appCategories))
                 return;

js/ui/calendar.js

@@ -802,6 +802,8 @@ var NotificationMessage = new Lang.Class({
     },
 
     _onDestroy() {
+        this.parent();
+
         if (this._updatedId)
             this.notification.disconnect(this._updatedId);
         this._updatedId = 0;

js/ui/closeDialog.js

@@ -2,6 +2,7 @@
 
 const Clutter = imports.gi.Clutter;
 const Gio = imports.gi.Gio;
+const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Lang = imports.lang;
 const Meta = imports.gi.Meta;
@@ -13,6 +14,7 @@ const Tweener = imports.ui.tweener;
 
 var FROZEN_WINDOW_BRIGHTNESS = -0.3
 var DIALOG_TRANSITION_TIME = 0.15
+var ALIVE_TIMEOUT = 5000;
 
 var CloseDialog = new Lang.Class({
     Name: 'CloseDialog',
@@ -26,6 +28,10 @@ var CloseDialog = new Lang.Class({
         this.parent();
         this._window = window;
         this._dialog = null;
+        this._tracked = undefined;
+        this._timeoutId = 0;
+        this._windowFocusChangedId = 0;
+        this._keyFocusChangedId = 0;
     },
 
     get window() {
@@ -93,10 +99,57 @@ var CloseDialog = new Lang.Class({
         this.response(Meta.CloseDialogResponse.FORCE_CLOSE);
     },
 
+    _onFocusChanged() {
+        if (Meta.is_wayland_compositor())
+            return;
+
+        let focusWindow = global.display.focus_window;
+        let keyFocus = global.stage.key_focus;
+
+        let shouldTrack;
+        if (focusWindow != null)
+            shouldTrack = focusWindow == this._window;
+        else
+            shouldTrack = keyFocus && this._dialog.contains(keyFocus);
+
+        if (this._tracked === shouldTrack)
+            return;
+
+        if (shouldTrack)
+            Main.layoutManager.trackChrome(this._dialog,
+                                           { affectsInputRegion: true });
+        else
+            Main.layoutManager.untrackChrome(this._dialog);
+
+        // The buttons are broken when they aren't added to the input region,
+        // so disable them properly in that case
+        this._dialog.buttonLayout.get_children().forEach(b => {
+            b.reactive = shouldTrack;
+        });
+
+        this._tracked = shouldTrack;
+    },
+
     vfunc_show() {
         if (this._dialog != null)
             return;
 
+        Meta.disable_unredirect_for_screen(global.screen);
+
+        this._timeoutId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, ALIVE_TIMEOUT,
+            () => {
+                this._window.check_alive(global.display.get_current_time_roundtrip());
+                return GLib.SOURCE_CONTINUE;
+            });
+
+        this._windowFocusChangedId =
+            global.display.connect('notify::focus-window',
+                                   this._onFocusChanged.bind(this));
+
+        this._keyFocusChangedId =
+            global.stage.connect('notify::key-focus',
+                                 this._onFocusChanged.bind(this));
+
         this._addWindowEffect();
         this._initDialog();
 
@@ -107,9 +160,7 @@ var CloseDialog = new Lang.Class({
                          { scale_y: 1,
                            transition: 'linear',
                            time: DIALOG_TRANSITION_TIME,
-                           onComplete: () => {
-                               Main.layoutManager.trackChrome(this._dialog, { affectsInputRegion: true });
-                           }
+                           onComplete: this._onFocusChanged.bind(this)
                          });
     },
 
@@ -117,6 +168,17 @@ var CloseDialog = new Lang.Class({
         if (this._dialog == null)
             return;
 
+        Meta.enable_unredirect_for_screen(global.screen);
+
+        GLib.source_remove(this._timeoutId);
+        this._timeoutId = 0;
+
+        global.display.disconnect(this._windowFocusChangedId)
+        this._windowFocusChangedId = 0;
+
+        global.stage.disconnect(this._keyFocusChangedId);
+        this._keyFocusChangedId = 0;
+
         let dialog = this._dialog;
         this._dialog = null;
         this._removeWindowEffect();

js/ui/components/automountManager.js

@@ -210,6 +210,10 @@ var AutomountManager = new Lang.Class({
     },
 
     _onVolumeRemoved(monitor, volume) {
+        if (volume._allowAutorunExpireId && volume._allowAutorunExpireId > 0) {
+            Mainloop.source_remove(volume._allowAutorunExpireId);
+            delete volume._allowAutorunExpireId;
+        }
         this._volumeQueue = 
             this._volumeQueue.filter(element => (element != volume));
     },
@@ -234,8 +238,10 @@ var AutomountManager = new Lang.Class({
     _allowAutorunExpire(volume) {
         let id = Mainloop.timeout_add_seconds(AUTORUN_EXPIRE_TIMEOUT_SECS, () => {
             volume.allowAutorun = false;
+            delete volume._allowAutorunExpireId;
             return GLib.SOURCE_REMOVE;
         });
+        volume._allowAutorunExpireId = id;
         GLib.Source.set_name_by_id(id, '[gnome-shell] volume.allowAutorun');
     }
 });

js/ui/dash.js

@@ -52,6 +52,8 @@ var DashItemContainer = new Lang.Class({
         this.animatingOut = false;
 
         this.connect('destroy', () => {
+            if (this.child != null)
+                this.child.destroy();
             this.label.destroy();
         });
     },

js/ui/dialog.js

@@ -183,7 +183,7 @@ var MessageDialogContent = new Lang.Class({
             this[`_${prop}`].add_style_class_name(`message-dialog-${prop}`);
         });
 
-        let textProps = { ellipsize_mode: Pango.EllipsizeMode.NONE,
+        let textProps = { ellipsize: Pango.EllipsizeMode.NONE,
                           line_wrap: true };
         Object.assign(this._subtitle.clutter_text, textProps);
         Object.assign(this._body.clutter_text, textProps);

js/ui/dnd.js

@@ -125,6 +125,16 @@ var _Draggable = new Lang.Class({
     },
 
     _onTouchEvent(actor, event) {
+        // Here we only handle touch events on wayland. On X11
+        // we do get emulated pointer events, which already works
+        // for single-touch cases. Besides, the X11 passive touch grab
+        // set up by Mutter will make us see first the touch events
+        // and later the pointer events, so it will look like two
+        // unrelated series of events, we want to avoid double handling
+        // in these cases.
+        if (!Meta.is_wayland_compositor())
+            return Clutter.EVENT_PROPAGATE;
+
         if (event.type() != Clutter.EventType.TOUCH_BEGIN ||
             !global.display.is_pointer_emulating_sequence(event.get_event_sequence()))
             return Clutter.EVENT_PROPAGATE;
@@ -396,10 +406,15 @@ var _Draggable = new Lang.Class({
         return true;
     },
 
+    _pickTargetActor() {
+        return this._dragActor.get_stage().get_actor_at_pos(Clutter.PickMode.ALL,
+                                                            this._dragX, this._dragY);
+    },
+
     _updateDragHover() {
         this._updateHoverId = 0;
-        let target = this._dragActor.get_stage().get_actor_at_pos(Clutter.PickMode.ALL,
-                                                                  this._dragX, this._dragY);
+        let target = this._pickTargetActor();
+
         let dragEvent = {
             x: this._dragX,
             y: this._dragY,
@@ -407,6 +422,18 @@ var _Draggable = new Lang.Class({
             source: this.actor._delegate,
             targetActor: target
         };
+
+        let targetActorDestroyHandlerId;
+        let handleTargetActorDestroyClosure;
+        handleTargetActorDestroyClosure = () => {
+            target = this._pickTargetActor();
+            dragEvent.targetActor = target;
+            targetActorDestroyHandlerId =
+                target.connect('destroy', handleTargetActorDestroyClosure);
+        };
+        targetActorDestroyHandlerId =
+            target.connect('destroy', handleTargetActorDestroyClosure);
+
         for (let i = 0; i < dragMonitors.length; i++) {
             let motionFunc = dragMonitors[i].dragMotion;
             if (motionFunc) {
@@ -417,6 +444,7 @@ var _Draggable = new Lang.Class({
                 }
             }
         }
+        dragEvent.targetActor.disconnect(targetActorDestroyHandlerId);
 
         while (target) {
             if (target._delegate && target._delegate.handleDragOver) {

js/ui/endSessionDialog.js

@@ -760,7 +760,7 @@ var EndSessionDialog = new Lang.Class({
         let updatePrepared = this._pkOfflineProxy.UpdatePrepared;
         let updatesAllowed = this._updatesPermission && this._updatesPermission.allowed;
 
-        _setCheckBoxLabel(this._checkBox, dialogContent.checkBoxText);
+        _setCheckBoxLabel(this._checkBox, dialogContent.checkBoxText || '');
         this._checkBox.actor.visible = (dialogContent.checkBoxText && updatePrepared && updatesAllowed);
         this._checkBox.actor.checked = (updatePrepared && updateTriggered);
 

js/ui/environment.js

@@ -17,6 +17,9 @@ const Gtk = imports.gi.Gtk;
 const Lang = imports.lang;
 const Shell = imports.gi.Shell;
 const St = imports.gi.St;
+const System = imports.system;
+
+let _localTimeZone = null;
 
 // We can't import shell JS modules yet, because they may have
 // variable initializations, etc, that depend on init() already having
@@ -116,9 +119,26 @@ function init() {
         }
     };
 
+    // Override to clear our own timezone cache as well
+    const origClearDateCaches = System.clearDateCaches;
+    System.clearDateCaches = function () {
+        _localTimeZone = null;
+        origClearDateCaches();
+    };
+
     // Work around https://bugzilla.mozilla.org/show_bug.cgi?id=508783
     Date.prototype.toLocaleFormat = function(format) {
-        return Shell.util_format_date(format, this.getTime());
+        if (_localTimeZone === null)
+            _localTimeZone = GLib.TimeZone.new_local();
+
+        let dt = GLib.DateTime.new(_localTimeZone,
+            this.getYear(),
+            this.getMonth() + 1,
+            this.getDate(),
+            this.getHours(),
+            this.getMinutes(),
+            this.getSeconds());
+        return dt ? dt.format(format) : '';
     };
 
     let slowdownEnv = GLib.getenv('GNOME_SHELL_SLOWDOWN_FACTOR');

js/ui/extensionSystem.js

@@ -76,6 +76,7 @@ function disableExtension(uuid) {
     if (extension.stylesheet) {
         let theme = St.ThemeContext.get_for_stage(global.stage).get_theme();
         theme.unload_stylesheet(extension.stylesheet);
+        delete extension.stylesheet;
     }
 
     try {
@@ -115,13 +116,18 @@ function enableExtension(uuid) {
     extensionOrder.push(uuid);
 
     let stylesheetNames = [global.session_mode + '.css', 'stylesheet.css'];
+    let theme = St.ThemeContext.get_for_stage(global.stage).get_theme();
     for (let i = 0; i < stylesheetNames.length; i++) {
-        let stylesheetFile = extension.dir.get_child(stylesheetNames[i]);
-        if (stylesheetFile.query_exists(null)) {
-            let theme = St.ThemeContext.get_for_stage(global.stage).get_theme();
+        try {
+            let stylesheetFile = extension.dir.get_child(stylesheetNames[i]);
             theme.load_stylesheet(stylesheetFile);
             extension.stylesheet = stylesheetFile;
             break;
+        } catch (e) {
+            if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.NOT_FOUND))
+                continue; // not an error
+            log(`Failed to load stylesheet for extension ${uuid}: ${e.message}`);
+            return;
         }
     }
 
@@ -131,6 +137,10 @@ function enableExtension(uuid) {
         _signals.emit('extension-state-changed', extension);
         return;
     } catch(e) {
+        if (extension.stylesheet) {
+            theme.unload_stylesheet(extension.stylesheet);
+            delete extension.stylesheet;
+        }
         logExtensionError(uuid, e);
         return;
     }

js/ui/iconGrid.js

@@ -418,6 +418,11 @@ var IconGrid = new Lang.Class({
     },
 
     _animationDone() {
+        this._clonesAnimating.forEach(clone => {
+            clone.source.reactive = true;
+            clone.source.opacity = 255;
+            clone.destroy();
+        });
         this._clonesAnimating = [];
         this.emit('animation-done');
     },
@@ -538,10 +543,6 @@ var IconGrid = new Lang.Class({
                                    onComplete: () => {
                                        if (isLastItem)
                                            this._animationDone();
-
-                                       actor.opacity = 255;
-                                       actor.reactive = true;
-                                       actorClone.destroy();
                                    }};
                 fadeParams = { time: ANIMATION_FADE_IN_TIME_FOR_ITEM,
                                transition: 'easeInOutQuad',
@@ -562,12 +563,8 @@ var IconGrid = new Lang.Class({
                                    scale_x: scaleX,
                                    scale_y: scaleY,
                                    onComplete: () => {
-                                       if (isLastItem) {
+                                       if (isLastItem)
                                            this._animationDone();
-                                           this._restoreItemsOpacity();
-                                       }
-                                       actor.reactive = true;
-                                       actorClone.destroy();
                                    }};
                 fadeParams = { time: ANIMATION_FADE_IN_TIME_FOR_ITEM,
                                transition: 'easeInOutQuad',
@@ -581,12 +578,6 @@ var IconGrid = new Lang.Class({
         }
     },
 
-    _restoreItemsOpacity() {
-        for (let index = 0; index < this._items.length; index++) {
-            this._items[index].actor.opacity = 255;
-        }
-    },
-
     _getAllocatedChildSizeAndSpacing(child) {
         let [,, natWidth, natHeight] = child.get_preferred_size();
         let width = Math.min(this._getHItemSize(), natWidth);

js/ui/keyboard.js

@@ -533,17 +533,25 @@ var FocusTracker = new Lang.Class({
     },
 
     _setCurrentRect(rect) {
-        let frameRect = this._currentWindow.get_frame_rect();
-        rect.x -= frameRect.x;
-        rect.y -= frameRect.y;
+        if (this._currentWindow) {
+            let frameRect = this._currentWindow.get_frame_rect();
+            rect.x -= frameRect.x;
+            rect.y -= frameRect.y;
+        }
 
         this._rect = rect;
         this.emit('position-changed');
     },
 
     getCurrentRect() {
-        let frameRect = this._currentWindow.get_frame_rect();
-        let rect = { x: this._rect.x + frameRect.x, y: this._rect.y + frameRect.y, width: this._rect.width, height: this._rect.height };
+        let rect = { x: this._rect.x, y: this._rect.y,
+                     width: this._rect.width, height: this._rect.height };
+
+        if (this._currentWindow) {
+            let frameRect = this._currentWindow.get_frame_rect();
+            rect.x += frameRect.x;
+            rect.y += frameRect.y;
+        }
 
         return rect;
     }
@@ -916,9 +924,11 @@ var Keyboard = new Lang.Class({
     },
 
     _relayout() {
-        if (this.actor == null)
-            return;
         let monitor = Main.layoutManager.keyboardMonitor;
+
+        if (this.actor == null || monitor == null)
+            return;
+
         let maxHeight = monitor.height / 3;
         this.actor.width = monitor.width;
         this.actor.height = maxHeight;

js/ui/layout.js

@@ -203,6 +203,7 @@ var LayoutManager = new Lang.Class({
 
         // Set up stage hierarchy to group all UI actors under one container.
         this.uiGroup = new Shell.GenericContainer({ name: 'uiGroup' });
+        this.uiGroup.set_flags(Clutter.ActorFlags.NO_LAYOUT);
         this.uiGroup.connect('allocate', (actor, box, flags) => {
             let children = actor.get_children();
             for (let i = 0; i < children.length; i++)
@@ -557,6 +558,8 @@ var LayoutManager = new Lang.Class({
     },
 
     get focusMonitor() {
+        if (this.focusIndex < 0)
+            return null;
         return this.monitors[this.focusIndex];
     },
 

js/ui/main.js

@@ -343,6 +343,9 @@ function loadTheme() {
     let theme = new St.Theme ({ application_stylesheet: _cssStylesheet,
                                 default_stylesheet: _defaultCssStylesheet });
 
+    if (theme.default_stylesheet == null)
+        throw new Error("No valid stylesheet found for '%s'".format(sessionMode.stylesheetName));
+
     if (previousTheme) {
         let customStylesheets = previousTheme.get_custom_stylesheets();
 

js/ui/messageList.js

@@ -362,7 +362,8 @@ var Message = new Lang.Class({
         this.setBody(body);
 
         this._closeButton.connect('clicked', this.close.bind(this));
-        this.actor.connect('notify::hover', this._sync.bind(this));
+        let actorHoverId = this.actor.connect('notify::hover', this._sync.bind(this));
+        this._closeButton.connect('destroy', this.actor.disconnect.bind(this.actor, actorHoverId));
         this.actor.connect('clicked', this._onClicked.bind(this));
         this.actor.connect('destroy', this._onDestroy.bind(this));
         this._sync();

js/ui/messageTray.js

@@ -1320,6 +1320,7 @@ var MessageTray = new Lang.Class({
         this._bannerBin.y = -this._banner.actor.height;
         this.actor.show();
 
+        Meta.disable_unredirect_for_screen(global.screen);
         this._updateShowingNotification();
 
         let [x, y, mods] = global.get_pointer();
@@ -1457,6 +1458,7 @@ var MessageTray = new Lang.Class({
 
         this._pointerInNotification = false;
         this._notificationRemoved = false;
+        Meta.enable_unredirect_for_screen(global.screen);
 
         this._banner.actor.destroy();
         this._banner = null;

js/ui/notificationDaemon.js

@@ -117,10 +117,8 @@ var FdoNotificationDaemon = new Lang.Class({
                  bitsPerSample, nChannels, data] = hints['image-data'];
             return Shell.util_create_pixbuf_from_data(data, GdkPixbuf.Colorspace.RGB, hasAlpha,
                                                       bitsPerSample, width, height, rowStride);
-        } else if (hints['image-path']) {
-            return new Gio.FileIcon({ file: Gio.File.new_for_path(hints['image-path']) });
         }
-        return null;
+        return this._iconForNotificationData(hints['image-path']);
     },
 
     _fallbackIconForNotificationData(hints) {

js/ui/osdWindow.js

@@ -108,15 +108,30 @@ var OsdWindow = new Lang.Class({
         this._hideTimeoutId = 0;
         this._reset();
 
-        Main.layoutManager.connect('monitors-changed',
-                                   this._relayout.bind(this));
+        this.actor.connect('destroy', this._onDestroy.bind(this));
+
+        this._monitorsChangedId =
+            Main.layoutManager.connect('monitors-changed',
+                                       this._relayout.bind(this));
         let themeContext = St.ThemeContext.get_for_stage(global.stage);
-        themeContext.connect('notify::scale-factor',
-                             this._relayout.bind(this));
+        this._scaleChangedId =
+            themeContext.connect('notify::scale-factor',
+                                 this._relayout.bind(this));
         this._relayout();
         Main.uiGroup.add_child(this.actor);
     },
 
+    _onDestroy() {
+        if (this._monitorsChangedId)
+            Main.layoutManager.disconnect(this._monitorsChangedId);
+        this._monitorsChangedId = 0;
+
+        let themeContext = St.ThemeContext.get_for_stage(global.stage);
+        if (this._scaleChangedId)
+            themeContext.disconnect(this._scaleChangedId);
+        this._scaleChangedId = 0;
+    },
+
     setIcon(icon) {
         this._icon.gicon = icon;
     },

js/ui/overview.js

@@ -393,10 +393,8 @@ var Overview = new Lang.Class({
         if (!Main.layoutManager.primaryMonitor)
             return;
 
-        let workArea = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
-
-        this._coverPane.set_position(0, workArea.y);
-        this._coverPane.set_size(workArea.width, workArea.height);
+        this._coverPane.set_position(0, 0);
+        this._coverPane.set_size(global.screen_width, global.screen_height);
 
         this._updateBackgrounds();
     },

js/ui/overviewControls.js

@@ -284,6 +284,11 @@ var ThumbnailsSlider = new Lang.Class({
         return child.get_theme_node().get_length('visible-width');
     },
 
+    _onDragEnd() {
+        this.actor.sync_hover();
+        this.parent();
+    },
+
     _getSlide() {
         if (!this._visible)
             return 0;

js/ui/panel.js

@@ -796,6 +796,7 @@ var Panel = new Lang.Class({
         this.actor.connect('get-preferred-height', this._getPreferredHeight.bind(this));
         this.actor.connect('allocate', this._allocate.bind(this));
         this.actor.connect('button-press-event', this._onButtonPress.bind(this));
+        this.actor.connect('touch-event', this._onButtonPress.bind(this));
         this.actor.connect('key-press-event', this._onKeyPress.bind(this));
 
         Main.overview.connect('showing', () => {
@@ -939,8 +940,13 @@ var Panel = new Lang.Class({
         if (event.get_source() != actor)
             return Clutter.EVENT_PROPAGATE;
 
-        let button = event.get_button();
-        if (button != 1)
+        let type = event.type();
+        let isPress = type == Clutter.EventType.BUTTON_PRESS;
+        if (!isPress && type != Clutter.EventType.TOUCH_BEGIN)
+            return Clutter.EVENT_PROPAGATE;
+
+        let button = isPress ? event.get_button() : -1;
+        if (isPress && button != 1)
             return Clutter.EVENT_PROPAGATE;
 
         let focusWindow = global.display.focus_window;
@@ -1079,6 +1085,7 @@ var Panel = new Lang.Class({
         let windows = activeWorkspace.list_windows().filter(metaWindow => {
             return metaWindow.is_on_primary_monitor() &&
                    metaWindow.showing_on_its_workspace() &&
+                   !metaWindow.is_hidden() &&
                    metaWindow.get_window_type() != Meta.WindowType.DESKTOP;
         });
 

js/ui/popupMenu.js

@@ -141,8 +141,17 @@ var PopupBaseMenuItem = new Lang.Class({
     },
 
     _onKeyPressEvent(actor, event) {
-        let symbol = event.get_key_symbol();
+        let state = event.get_state();
 
+        // if user has a modifier down (except capslock)
+        // then don't handle the key press here
+        state &= ~Clutter.ModifierType.LOCK_MASK;
+        state &= Clutter.ModifierType.MODIFIER_MASK;
+
+        if (state)
+            return Clutter.EVENT_PROPAGATE;
+
+        let symbol = event.get_key_symbol();
         if (symbol == Clutter.KEY_space || symbol == Clutter.KEY_Return) {
             this.activate(event);
             return Clutter.EVENT_STOP;

js/ui/runDialog.js

@@ -114,18 +114,16 @@ var RunDialog = new Lang.Class({
 
         this._history = new History.HistoryManager({ gsettingsKey: HISTORY_KEY,
                                                      entry: this._entryText });
+        this._entryText.connect('activate', (o) => {
+            this.popModal();
+            this._run(o.get_text(),
+                      Clutter.get_current_event().get_state() & Clutter.ModifierType.CONTROL_MASK);
+            if (!this._commandError ||
+                !this.pushModal())
+                this.close();
+        });
         this._entryText.connect('key-press-event', (o, e) => {
             let symbol = e.get_key_symbol();
-            if (symbol == Clutter.Return || symbol == Clutter.KP_Enter) {
-                this.popModal();
-                this._run(o.get_text(),
-                          e.get_state() & Clutter.ModifierType.CONTROL_MASK);
-                if (!this._commandError ||
-                    !this.pushModal())
-                    this.close();
-
-                return Clutter.EVENT_STOP;
-            }
             if (symbol == Clutter.Tab) {
                 let text = o.get_text();
                 let prefix;

js/ui/search.js

@@ -192,6 +192,7 @@ var SearchResultsBase = new Lang.Class({
     },
 
     clear() {
+        this._cancellable.cancel();
         for (let resultId in this._resultDisplays)
             this._resultDisplays[resultId].actor.destroy();
         this._resultDisplays = {};
@@ -225,6 +226,12 @@ var SearchResultsBase = new Lang.Class({
             this._cancellable.reset();
 
             this.provider.getResultMetas(metasNeeded, metas => {
+                if (this._cancellable.is_cancelled()) {
+                    if (metas.length > 0)
+                        log(`Search provider ${this.provider.id} returned results after the request was canceled`);
+                    callback(false);
+                    return;
+                }
                 if (metas.length != metasNeeded.length) {
                     log('Wrong number of result metas returned by search provider ' + this.provider.id +
                         ': expected ' + metasNeeded.length + ' but got ' + metas.length);

js/ui/status/keyboard.js

@@ -360,11 +360,14 @@ var InputSourceManager = new Lang.Class({
         this._settings.connect('per-window-changed', this._sourcesPerWindowChanged.bind(this));
         this._sourcesPerWindowChanged();
         this._disableIBus = false;
+        this._reloading = false;
     },
 
     reload() {
+        this._reloading = true;
         this._keyboardManager.setKeyboardOptions(this._settings.keyboardOptions);
         this._inputSourcesChanged();
+        this._reloading = false;
     },
 
     _ibusReadyCallback(im, ready) {
@@ -458,7 +461,15 @@ var InputSourceManager = new Lang.Class({
     },
 
     activateInputSource(is, interactive) {
-        KeyboardManager.holdKeyboard();
+        // The focus changes during holdKeyboard/releaseKeyboard may trick
+        // the client into hiding UI containing the currently focused entry.
+        // So holdKeyboard/releaseKeyboard are not called when
+        // 'set-content-type' signal is received.
+        // E.g. Focusing on a password entry in a popup in Xorg Firefox
+        // will emit 'set-content-type' signal.
+        // https://gitlab.gnome.org/GNOME/gnome-shell/issues/391
+        if (!this._reloading)
+            KeyboardManager.holdKeyboard();
         this._keyboardManager.apply(is.xkbId);
 
         // All the "xkb:..." IBus engines simply "echo" back symbols,
@@ -473,7 +484,10 @@ var InputSourceManager = new Lang.Class({
         else
             engine = 'xkb:us::eng';
 
-        this._ibusManager.setEngine(engine, KeyboardManager.releaseKeyboard);
+        if (!this._reloading)
+            this._ibusManager.setEngine(engine, KeyboardManager.releaseKeyboard);
+        else
+            this._ibusManager.setEngine(engine);
         this._currentInputSourceChanged(is);
 
         if (interactive)

js/ui/status/network.js

@@ -419,12 +419,14 @@ var NMConnectionDevice = new Lang.Class({
         this._deactivateItem.actor.visible = this._device.state > NM.DeviceState.DISCONNECTED;
 
         if (this._activeConnection == null) {
-            this._activeConnection = this._device.active_connection;
-
-            if (this._activeConnection) {
-                ensureActiveConnectionProps(this._activeConnection, this._client);
-                let item = this._connectionItems.get(this._activeConnection.connection.get_uuid());
-                item.setActiveConnection(this._activeConnection);
+            let activeConnection = this._device.active_connection;
+            if (activeConnection && activeConnection.connection) {
+                let item = this._connectionItems.get(activeConnection.connection.get_uuid());
+                if (item) {
+                    this._activeConnection = activeConnection;
+                    ensureActiveConnectionProps(this._activeConnection, this._client);
+                    item.setActiveConnection(this._activeConnection);
+                }
             }
         }
 

js/ui/status/system.js

@@ -58,6 +58,9 @@ var AltSwitcher = new Lang.Class({
             childToShow = this._standard;
         } else if (this._alternate.visible) {
             childToShow = this._alternate;
+        } else {
+            this.actor.hide();
+            return;
         }
 
         let childShown = this.actor.get_child();
@@ -79,7 +82,7 @@ var AltSwitcher = new Lang.Class({
             global.sync_pointer();
         }
 
-        this.actor.visible = (childToShow != null);
+        this.actor.show();
     },
 
     _onDestroy() {

js/ui/viewSelector.js

@@ -311,6 +311,7 @@ var ViewSelector = new Lang.Class({
     },
 
     hide() {
+        this.reset();
         this._workspacesDisplay.hide();
     },
 
@@ -459,7 +460,11 @@ var ViewSelector = new Lang.Class({
     },
 
     reset() {
-        global.stage.set_key_focus(null);
+        // Don't drop the key focus on Clutter's side if anything but the
+        // overview has pushed a modal (e.g. system modals when activated using
+        // the overview).
+        if (Main.modalCount <= 1)
+            global.stage.set_key_focus(null);
 
         this._entry.text = '';
 

js/ui/windowManager.js

@@ -627,8 +627,8 @@ var AppSwitchAction = new Lang.Class({
 
         if (this.get_n_current_points() == 3) {
             for (let i = 0; i < this.get_n_current_points(); i++) {
-                [startX, startY] = this.get_press_coords(i);
-                [x, y] = this.get_motion_coords(i);
+                let [startX, startY] = this.get_press_coords(i);
+                let [x, y] = this.get_motion_coords(i);
 
                 if (Math.abs(x - startX) > MOTION_THRESHOLD ||
                     Math.abs(y - startY) > MOTION_THRESHOLD)
@@ -1173,6 +1173,10 @@ var WindowManager = new Lang.Class({
                 yScale = geom.height / actor.height;
             } else {
                 let monitor = Main.layoutManager.monitors[actor.meta_window.get_monitor()];
+                if (!monitor) {
+                    this._minimizeWindowDone();
+                    return;
+                }
                 xDest = monitor.x;
                 yDest = monitor.y;
                 if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
@@ -1248,6 +1252,11 @@ var WindowManager = new Lang.Class({
                                 geom.height / actor.height);
             } else {
                 let monitor = Main.layoutManager.monitors[actor.meta_window.get_monitor()];
+                if (!monitor) {
+                    actor.show();
+                    this._unminimizeWindowDone();
+                    return;
+                }
                 actor.set_position(monitor.x, monitor.y);
                 if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
                     actor.x += monitor.width;
@@ -1754,6 +1763,14 @@ var WindowManager = new Lang.Class({
             }
         }
 
+        for (let i = 0; i < switchData.windows.length; i++) {
+            let w = switchData.windows[i];
+
+            w.windowDestroyId = w.window.connect('destroy', () => {
+                switchData.windows.splice(switchData.windows.indexOf(w), 1);
+            });
+        }
+
         switchData.inGroup.set_position(-xDest, -yDest);
         switchData.inGroup.raise_top();
 
@@ -1784,8 +1801,8 @@ var WindowManager = new Lang.Class({
 
         for (let i = 0; i < switchData.windows.length; i++) {
                 let w = switchData.windows[i];
-                if (w.window.is_destroyed()) // Window gone
-                    continue;
+                w.window.disconnect(w.windowDestroyId);
+
                 if (w.window.get_parent() == switchData.outGroup) {
                     w.window.reparent(w.parent);
                     w.window.hide();

js/ui/windowMenu.js

@@ -128,11 +128,10 @@ var WindowMenu = new Lang.Class({
 
         let screen = global.screen;
         let nMonitors = screen.get_n_monitors();
-        if (nMonitors > 1) {
+        let monitorIndex = window.get_monitor();
+        if (nMonitors > 1 && monitorIndex >= 0) {
             this.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
 
-            let monitorIndex = window.get_monitor();
-
             let dir = Meta.ScreenDirection.UP;
             let upMonitorIndex =
                 screen.get_monitor_neighbor_index(monitorIndex, dir);

js/ui/workspace.js

@@ -137,8 +137,10 @@ var WindowClone = new Lang.Class({
         this._dragSlot = [0, 0, 0, 0];
         this._stackAbove = null;
 
-        this._windowClone._updateId = this.metaWindow.connect('size-changed',
-            this._onRealWindowSizeChanged.bind(this));
+        this._windowClone._sizeChangedId = this.metaWindow.connect('size-changed',
+            this._onMetaWindowSizeChanged.bind(this));
+        this._windowClone._posChangedId = this.metaWindow.connect('position-changed',
+            this._computeBoundingBox.bind(this));
         this._windowClone._destroyId =
             this.realWindow.connect('destroy', () => {
                 // First destroy the clone and then destroy everything
@@ -206,8 +208,7 @@ var WindowClone = new Lang.Class({
 
     addAttachedDialog(win) {
         this._doAddAttachedDialog(win, win.get_compositor_private());
-        this._computeBoundingBox();
-        this.emit('size-changed');
+        this._onMetaWindowSizeChanged();
     },
 
     hasAttachedDialogs() {
@@ -216,15 +217,14 @@ var WindowClone = new Lang.Class({
 
     _doAddAttachedDialog(metaWin, realWin) {
         let clone = new Clutter.Clone({ source: realWin });
-        clone._updateId = metaWin.connect('size-changed', () => {
-            this._computeBoundingBox();
-            this.emit('size-changed');
-        });
+        clone._sizeChangedId = metaWin.connect('size-changed',
+            this._onMetaWindowSizeChanged.bind(this));
+        clone._posChangedId = metaWin.connect('position-changed',
+            this._onMetaWindowSizeChanged.bind(this));
         clone._destroyId = realWin.connect('destroy', () => {
             clone.destroy();
 
-            this._computeBoundingBox();
-            this.emit('size-changed');
+            this._onMetaWindowSizeChanged();
         });
         this.actor.add_child(clone);
     },
@@ -321,12 +321,13 @@ var WindowClone = new Lang.Class({
             else
                 realWindow = child.source;
 
-            realWindow.meta_window.disconnect(child._updateId);
+            realWindow.meta_window.disconnect(child._sizeChangedId);
+            realWindow.meta_window.disconnect(child._posChangedId);
             realWindow.disconnect(child._destroyId);
         });
     },
 
-    _onRealWindowSizeChanged() {
+    _onMetaWindowSizeChanged() {
         this._computeBoundingBox();
         this.emit('size-changed');
     },
@@ -469,7 +470,6 @@ var WindowOverlay = new Lang.Class({
         this._windowAddedId = 0;
 
         button.hide();
-        title.hide();
 
         this.title = title;
         this.closeButton = button;
@@ -544,12 +544,10 @@ var WindowOverlay = new Lang.Class({
         let titleX = cloneX + (cloneWidth - title.width) / 2;
         let titleY = cloneY + cloneHeight - (title.height - this.borderSize) / 2;
 
-        if (animate) {
-            this._animateOverlayActor(title, Math.floor(titleX), Math.floor(titleY), title.width);
-        } else {
-            title.width = title.width;
+        if (animate)
+            this._animateOverlayActor(title, Math.floor(titleX), Math.floor(titleY));
+        else
             title.set_position(Math.floor(titleX), Math.floor(titleY));
-        }
 
         let borderX = cloneX - this.borderSize;
         let borderY = cloneY - this.borderSize;
@@ -568,10 +566,12 @@ var WindowOverlay = new Lang.Class({
     _animateOverlayActor(actor, x, y, width, height) {
         let params = { x: x,
                        y: y,
-                       width: width,
                        time: Overview.ANIMATION_TIME,
                        transition: 'easeOutQuad' };
 
+        if (width !== undefined)
+            params.width = width;
+
         if (height !== undefined)
             params.height = height;
 
@@ -1506,7 +1506,7 @@ var Workspace = new Lang.Class({
             if (metaWin.is_attached_dialog()) {
                 let parent = metaWin.get_transient_for();
                 while (parent.is_attached_dialog())
-                    parent = metaWin.get_transient_for();
+                    parent = parent.get_transient_for();
 
                 let idx = this._lookupIndex (parent);
                 if (idx < 0) {

js/ui/workspaceThumbnail.js

@@ -68,7 +68,7 @@ var WindowClone = new Lang.Class({
         this.realWindow = realWindow;
         this.metaWindow = realWindow.meta_window;
 
-        this.clone._updateId = this.metaWindow.connect('position-changed',
+        this.clone._updateId = this.realWindow.connect('notify::position',
                                                        this._onPositionChanged.bind(this));
         this.clone._destroyId = this.realWindow.connect('destroy', () => {
             // First destroy the clone and then destroy everything
@@ -153,7 +153,7 @@ var WindowClone = new Lang.Class({
         let clone = new Clutter.Clone({ source: realDialog });
         this._updateDialogPosition(realDialog, clone);
 
-        clone._updateId = metaDialog.connect('position-changed', dialog => {
+        clone._updateId = realDialog.connect('notify::position', dialog => {
             this._updateDialogPosition(dialog, clone);
         });
         clone._destroyId = realDialog.connect('destroy', () => {
@@ -171,7 +171,6 @@ var WindowClone = new Lang.Class({
     },
 
     _onPositionChanged() {
-        let rect = this.metaWindow.get_frame_rect();
         this.actor.set_position(this.realWindow.x, this.realWindow.y);
     },
 
@@ -179,7 +178,7 @@ var WindowClone = new Lang.Class({
         this.actor.get_children().forEach(child => {
             let realWindow = child.source;
 
-            realWindow.meta_window.disconnect(child._updateId);
+            realWindow.disconnect(child._updateId);
             realWindow.disconnect(child._destroyId);
         });
     },
@@ -417,7 +416,7 @@ var WorkspaceThumbnail = new Lang.Class({
         } else if (metaWin.is_attached_dialog()) {
             let parent = metaWin.get_transient_for();
             while (parent.is_attached_dialog())
-                parent = metaWin.get_transient_for();
+                parent = parent.get_transient_for();
 
             let idx = this._lookupIndex (parent);
             if (idx < 0) {
@@ -677,7 +676,11 @@ var ThumbnailsBox = new Lang.Class({
         this._settings.connect('changed::dynamic-workspaces',
             this._updateSwitcherVisibility.bind(this));
 
-        Main.layoutManager.connect('monitors-changed', this._rebuildThumbnails.bind(this));
+        Main.layoutManager.connect('monitors-changed', () => {
+            this._destroyThumbnails();
+            if (Main.overview.visible)
+                this._createThumbnails();
+        });
     },
 
     _updateSwitcherVisibility() {
@@ -870,9 +873,6 @@ var ThumbnailsBox = new Lang.Class({
             Main.overview.connect('windows-restacked',
                                   this._syncStacking.bind(this));
 
-        this._workareasChangedId =
-            global.screen.connect('workareas-changed', this._rebuildThumbnails.bind(this));
-
         this._targetScale = 0;
         this._scale = 0;
         this._pendingScaleUpdate = false;
@@ -902,24 +902,12 @@ var ThumbnailsBox = new Lang.Class({
             this._syncStackingId = 0;
         }
 
-        if (this._workareasChangedId > 0) {
-            global.screen.disconnect(this._workareasChangedId);
-            this._workareasChangedId = 0;
-        }
-
         for (let w = 0; w < this._thumbnails.length; w++)
             this._thumbnails[w].destroy();
         this._thumbnails = [];
         this._porthole = null;
     },
 
-    _rebuildThumbnails() {
-        this._destroyThumbnails();
-
-        if (Main.overview.visible)
-            this._createThumbnails();
-    },
-
     _workspacesChanged() {
         let validThumbnails =
             this._thumbnails.filter(t => t.state <= ThumbnailState.NORMAL);

js/ui/workspacesView.js

@@ -470,6 +470,7 @@ var WorkspacesDisplay = new Lang.Class({
         this._switchWorkspaceNotifyId = 0;
 
         this._notifyOpacityId = 0;
+        this._restackedNotifyId = 0;
         this._scrollEventId = 0;
         this._keyPressEventId = 0;
 

meson.build

@@ -1,5 +1,5 @@
 project('gnome-shell', 'c',
-  version: '3.28.3',
+  version: '3.28.4',
   meson_version: '>= 0.42.0',
   license: 'GPLv2+'
 )

po/cs.po

@@ -1064,7 +1064,7 @@ msgstr "Načítá se…"
 #: js/ui/dateMenu.js:321
 #, javascript-format
 msgid "Feels like %s."
-msgstr "Pocitově jako %s."
+msgstr "Pocitová teplota %s."
 
 #: js/ui/dateMenu.js:324
 msgid "Go online for weather information"

src/meson.build

@@ -103,6 +103,7 @@ libshell_menu_dep = declare_dependency(link_with: libshell_menu)
 
 libshell_public_headers = [
   'shell-app.h',
+  'shell-app-cache.h',
   'shell-app-system.h',
   'shell-app-usage.h',
   'shell-embedded-window.h',
@@ -138,6 +139,7 @@ libshell_private_headers = [
 libshell_sources = [
   'gnome-shell-plugin.c',
   'shell-app.c',
+  'shell-app-cache.c',
   'shell-app-system.c',
   'shell-app-usage.c',
   'shell-embedded-window.c',

src/shell-app-cache.c

@@ -0,0 +1,439 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#include "config.h"
+
+#include "shell-app-cache.h"
+
+/**
+ * SECTION:shell-app-cache
+ * @title: ShellAppCache
+ * @short_description: application information cache
+ *
+ * The #ShellAppCache is responsible for caching information about #GAppInfo
+ * to ensure that the compositor thread never needs to perform disk reads to
+ * access them. All of the work is done off-thread. When the new data has
+ * been loaded, a #ShellAppCache::changed signal is emitted.
+ *
+ * Additionally, the #ShellAppCache caches information about translations for
+ * directories. This allows translation provided in [Desktop Entry] GKeyFiles
+ * to be available when building StLabel and other elements without performing
+ * costly disk reads.
+ *
+ * Various monitors are used to keep this information up to date while the
+ * Shell is running.
+ */
+
+#define DEFAULT_TIMEOUT_SECONDS 5
+
+struct _ShellAppCache
+{
+  GObject          parent_instance;
+
+  GMutex           mutex;
+
+  GAppInfoMonitor *monitor;
+  GPtrArray       *dir_monitors;
+  GHashTable      *folders;
+  GCancellable    *cancellable;
+  GList           *app_infos;
+
+  guint            queued_update;
+};
+
+typedef struct
+{
+  GList      *app_infos;
+  GHashTable *folders;
+} CacheState;
+
+G_DEFINE_TYPE (ShellAppCache, shell_app_cache, G_TYPE_OBJECT)
+
+enum {
+  CHANGED,
+  N_SIGNALS
+};
+
+static guint signals [N_SIGNALS];
+
+static void
+cache_state_free (CacheState *state)
+{
+  g_clear_pointer (&state->folders, g_hash_table_unref);
+  g_list_free_full (state->app_infos, g_object_unref);
+  g_slice_free (CacheState, state);
+}
+
+static CacheState *
+cache_state_new (void)
+{
+  CacheState *state;
+
+  state = g_slice_new0 (CacheState);
+  state->folders = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
+  return g_steal_pointer (&state);
+}
+
+/**
+ * shell_app_cache_get_default:
+ *
+ * Gets the default #ShellAppCache.
+ *
+ * Returns: (transfer none): a #ShellAppCache
+ */
+ShellAppCache *
+shell_app_cache_get_default (void)
+{
+  static ShellAppCache *instance;
+
+  if (instance == NULL)
+    {
+      instance = g_object_new (SHELL_TYPE_APP_CACHE, NULL);
+      g_object_add_weak_pointer (G_OBJECT (instance), (gpointer *)&instance);
+    }
+
+  return instance;
+}
+
+static void
+load_folder (GHashTable *folders,
+             const char *path)
+{
+  g_autoptr(GDir) dir = NULL;
+  const char *name;
+
+  g_assert (folders != NULL);
+  g_assert (path != NULL);
+
+  dir = g_dir_open (path, 0, NULL);
+  if (dir == NULL)
+    return;
+
+  while ((name = g_dir_read_name (dir)))
+    {
+      g_autofree gchar *filename = NULL;
+      g_autoptr(GKeyFile) keyfile = NULL;
+
+      /* First added wins */
+      if (g_hash_table_contains (folders, name))
+        continue;
+
+      filename = g_build_filename (path, name, NULL);
+      keyfile = g_key_file_new ();
+
+      if (g_key_file_load_from_file (keyfile, filename, G_KEY_FILE_NONE, NULL))
+        g_hash_table_insert (folders,
+                             g_strdup (name),
+                             g_key_file_get_locale_string (keyfile,
+                                                           "Desktop Entry",
+                                                           "Name",
+                                                           NULL,
+                                                           NULL));
+    }
+}
+
+static void
+load_folders (GHashTable *folders)
+{
+  const char * const *dirs;
+  g_autofree gchar *userdir = NULL;
+  guint i;
+
+  g_assert (folders != NULL);
+
+  userdir = g_build_filename (g_get_user_data_dir (), "desktop-directories", NULL);
+  load_folder (folders, userdir);
+
+  dirs = g_get_system_data_dirs ();
+  for (i = 0; dirs[i] != NULL; i++)
+    {
+      g_autofree gchar *sysdir = g_build_filename (dirs[i], "desktop-directories", NULL);
+      load_folder (folders, sysdir);
+    }
+}
+
+static void
+shell_app_cache_worker (GTask        *task,
+                        gpointer      source_object,
+                        gpointer      task_data,
+                        GCancellable *cancellable)
+{
+  CacheState *state;
+
+  g_assert (G_IS_TASK (task));
+  g_assert (SHELL_IS_APP_CACHE (source_object));
+
+  state = cache_state_new ();
+  state->app_infos = g_app_info_get_all ();
+  load_folders (state->folders);
+
+  g_task_return_pointer (task, state, (GDestroyNotify)cache_state_free);
+}
+
+static void
+apply_update_cb (GObject      *object,
+                 GAsyncResult *result,
+                 gpointer      user_data)
+{
+  ShellAppCache *cache = (ShellAppCache *)object;
+  g_autoptr(GError) error = NULL;
+  CacheState *state;
+
+  g_assert (SHELL_IS_APP_CACHE (cache));
+  g_assert (G_IS_TASK (result));
+  g_assert (user_data == NULL);
+
+  state = g_task_propagate_pointer (G_TASK (result), &error);
+
+  if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+    return;
+
+  g_mutex_lock (&cache->mutex);
+  g_list_free_full (cache->app_infos, g_object_unref);
+  cache->app_infos = g_steal_pointer (&state->app_infos);
+  g_clear_pointer (&cache->folders, g_hash_table_unref);
+  cache->folders = g_steal_pointer (&state->folders);
+  g_mutex_unlock (&cache->mutex);
+
+  g_signal_emit (cache, signals[CHANGED], 0);
+
+  cache_state_free (state);
+}
+
+static gboolean
+shell_app_cache_do_update (gpointer user_data)
+{
+  ShellAppCache *cache = user_data;
+  g_autoptr(GTask) task = NULL;
+
+  cache->queued_update = 0;
+
+  /* Reset the cancellable state so we don't race with
+   * two updates coming back overlapped and applying the
+   * information in the wrong order.
+   */
+  g_cancellable_cancel (cache->cancellable);
+  g_clear_object (&cache->cancellable);
+  cache->cancellable = g_cancellable_new ();
+
+  task = g_task_new (cache, cache->cancellable, apply_update_cb, NULL);
+  g_task_set_source_tag (task, shell_app_cache_do_update);
+  g_task_run_in_thread (task, shell_app_cache_worker);
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+shell_app_cache_queue_update (ShellAppCache *self)
+{
+  g_assert (SHELL_IS_APP_CACHE (self));
+
+  if (self->queued_update != 0)
+    g_source_remove (self->queued_update);
+
+  self->queued_update = g_timeout_add_seconds (DEFAULT_TIMEOUT_SECONDS,
+                                               shell_app_cache_do_update,
+                                               self);
+}
+
+static void
+monitor_data_dir (ShellAppCache *self,
+                  const gchar   *directory)
+{
+  g_autofree gchar *subdir = NULL;
+  g_autoptr(GFile) file = NULL;
+  g_autoptr(GFileMonitor) monitor = NULL;
+
+  g_assert (SHELL_IS_APP_CACHE (self));
+
+  if (directory == NULL)
+    return;
+
+  subdir = g_build_filename (directory, "desktop-directories", NULL);
+  file = g_file_new_for_path (subdir);
+  monitor = g_file_monitor_directory (file, G_FILE_MONITOR_NONE, NULL, NULL);
+
+  if (monitor != NULL)
+    {
+      g_file_monitor_set_rate_limit (monitor, DEFAULT_TIMEOUT_SECONDS * 1000);
+      g_signal_connect_object (monitor,
+                               "changed",
+                               G_CALLBACK (shell_app_cache_queue_update),
+                               self,
+                               G_CONNECT_SWAPPED);
+      g_ptr_array_add (self->dir_monitors, g_steal_pointer (&monitor));
+    }
+}
+
+static void
+shell_app_cache_finalize (GObject *object)
+{
+  ShellAppCache *self = (ShellAppCache *)object;
+
+  g_clear_object (&self->monitor);
+
+  if (self->queued_update)
+    {
+      g_source_remove (self->queued_update);
+      self->queued_update = 0;
+    }
+
+  g_clear_pointer (&self->dir_monitors, g_ptr_array_unref);
+  g_clear_pointer (&self->folders, g_hash_table_unref);
+  g_list_free_full (self->app_infos, g_object_unref);
+  g_mutex_clear (&self->mutex);
+
+  G_OBJECT_CLASS (shell_app_cache_parent_class)->finalize (object);
+}
+
+static void
+shell_app_cache_class_init (ShellAppCacheClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = shell_app_cache_finalize;
+
+  /**
+   * ShellAppCache::changed:
+   *
+   * The "changed" signal is emitted when the cache has updated
+   * information about installed applications.
+   */
+  signals [CHANGED] =
+    g_signal_new ("changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  0, NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+shell_app_cache_init (ShellAppCache *self)
+{
+  const gchar * const *sysdirs;
+  guint i;
+
+  g_mutex_init (&self->mutex);
+
+  /* Monitor directories for translation changes */
+  self->dir_monitors = g_ptr_array_new_with_free_func (g_object_unref);
+  monitor_data_dir (self, g_get_user_data_dir ());
+  sysdirs = g_get_system_data_dirs ();
+  for (i = 0; sysdirs[i] != NULL; i++)
+    monitor_data_dir (self, sysdirs[i]);
+
+  /* Load translated directory names immediately */
+  self->folders = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+  load_folders (self->folders);
+
+  /* Setup AppMonitor to track changes */
+  self->monitor = g_app_info_monitor_get ();
+  g_signal_connect_object (self->monitor,
+                           "changed",
+                           G_CALLBACK (shell_app_cache_queue_update),
+                           self,
+                           G_CONNECT_SWAPPED);
+  self->app_infos = g_app_info_get_all ();
+}
+
+/**
+ * shell_app_cache_get_all:
+ * @cache: (nullable): a #ShellAppCache or %NULL
+ *
+ * Like g_app_info_get_all() but always returns a
+ * cached set of application info so the caller can be
+ * sure that I/O will not happen on the current thread.
+ *
+ * Returns: (transfer full) (element-type GAppInfo):
+ *   a newly allocated GList of references to GAppInfos.
+ */
+GList *
+shell_app_cache_get_all (ShellAppCache *cache)
+{
+  GList *ret;
+
+  if (cache == NULL)
+    cache = shell_app_cache_get_default ();
+
+  g_return_val_if_fail (SHELL_IS_APP_CACHE (cache), NULL);
+
+  g_mutex_lock (&cache->mutex);
+  ret = g_list_copy_deep (cache->app_infos, (GCopyFunc)g_object_ref, NULL);
+  g_mutex_unlock (&cache->mutex);
+
+  return ret;
+}
+
+/**
+ * shell_app_cache_get_info:
+ * @cache: (nullable): a #ShellAppCache or %NULL
+ * @id: the application id
+ *
+ * A replacement for g_desktop_app_info_new() that will lookup the information
+ * from the cache instead of (re)loading from disk.
+ *
+ * Returns: (nullable) (transfer full): a #GDesktopAppInfo or %NULL
+ */
+GDesktopAppInfo *
+shell_app_cache_get_info (ShellAppCache *cache,
+                          const char    *id)
+{
+  GDesktopAppInfo *ret = NULL;
+  const GList *iter;
+
+  if (cache == NULL)
+    cache = shell_app_cache_get_default ();
+
+  g_return_val_if_fail (SHELL_IS_APP_CACHE (cache), NULL);
+
+  g_mutex_lock (&cache->mutex);
+
+  for (iter = cache->app_infos; iter != NULL; iter = iter->next)
+    {
+      GAppInfo *info = iter->data;
+
+      if (g_strcmp0 (id, g_app_info_get_id (info)) == 0)
+        {
+          ret = g_object_ref (G_DESKTOP_APP_INFO (info));
+          break;
+        }
+    }
+
+  g_mutex_unlock (&cache->mutex);
+
+  return g_steal_pointer (&ret);
+}
+
+/**
+ * shell_app_cache_translate_folder:
+ * @cache: (nullable): a #ShellAppCache or %NULL
+ * @name: the folder name
+ *
+ * Gets the translated folder name for @name if any exists. Otherwise
+ * a copy of @name is returned.
+ *
+ * Returns: the translated string
+ */
+char *
+shell_app_cache_translate_folder (ShellAppCache *cache,
+                                  const char    *name)
+{
+  char *ret;
+
+  if (cache == NULL)
+    cache = shell_app_cache_get_default ();
+
+  g_return_val_if_fail (SHELL_IS_APP_CACHE (cache), NULL);
+
+  if (name == NULL)
+    return NULL;
+
+  g_mutex_lock (&cache->mutex);
+  ret = g_strdup (g_hash_table_lookup (cache->folders, name));
+  g_mutex_unlock (&cache->mutex);
+
+  if (ret == NULL)
+    ret = g_strdup (name);
+
+  return g_steal_pointer (&ret);
+}

src/shell-app-cache.h

@@ -0,0 +1,19 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_APP_CACHE__
+#define __SHELL_APP_CACHE__
+
+#include <gio/gio.h>
+#include <gio/gdesktopappinfo.h>
+
+#define SHELL_TYPE_APP_CACHE (shell_app_cache_get_type())
+
+G_DECLARE_FINAL_TYPE (ShellAppCache, shell_app_cache, SHELL, APP_CACHE, GObject)
+
+ShellAppCache   *shell_app_cache_get_default      (void);
+GList           *shell_app_cache_get_all          (ShellAppCache *cache);
+GDesktopAppInfo *shell_app_cache_get_info         (ShellAppCache *cache,
+                                                   const char    *id);
+char            *shell_app_cache_translate_folder (ShellAppCache *cache,
+                                                   const char    *name);
+
+#endif /* __SHELL_APP_CACHE__ */

src/shell-app-system.c

@@ -9,11 +9,20 @@
 #include <gio/gio.h>
 #include <glib/gi18n.h>
 
+#include "shell-app-cache.h"
 #include "shell-app-private.h"
 #include "shell-window-tracker-private.h"
 #include "shell-app-system-private.h"
 #include "shell-global.h"
 #include "shell-util.h"
+#include "st.h"
+
+/* Rescan for at most RESCAN_TIMEOUT_MS * MAX_RESCAN_RETRIES. That
+ * should be plenty of time for even a slow spinning drive to update
+ * the icon cache.
+ */
+#define RESCAN_TIMEOUT_MS 2500
+#define MAX_RESCAN_RETRIES 6
 
 /* Vendor prefixes are something that can be preprended to a .desktop
  * file name.  Undo this.
@@ -50,6 +59,9 @@ struct _ShellAppSystemPrivate {
   GHashTable *running_apps;
   GHashTable *id_to_app;
   GHashTable *startup_wm_class_to_id;
+
+  guint rescan_icons_timeout_id;
+  guint n_rescan_retries;
 };
 
 static void shell_app_system_finalize (GObject *object);
@@ -82,12 +94,14 @@ static void
 scan_startup_wm_class_to_id (ShellAppSystem *self)
 {
   ShellAppSystemPrivate *priv = self->priv;
-  GList *apps, *l;
+  g_autolist(GAppInfo) all = NULL;
+  const GList *l;
 
   g_hash_table_remove_all (priv->startup_wm_class_to_id);
 
-  apps = g_app_info_get_all ();
-  for (l = apps; l != NULL; l = l->next)
+  all = shell_app_cache_get_all (NULL);
+
+  for (l = all; l != NULL; l = l->next)
     {
       GAppInfo *info = l->data;
       const char *startup_wm_class, *id, *old_id;
@@ -105,8 +119,6 @@ scan_startup_wm_class_to_id (ShellAppSystem *self)
         g_hash_table_insert (priv->startup_wm_class_to_id,
                              g_strdup (startup_wm_class), g_strdup (id));
     }
-
-  g_list_free_full (apps, g_object_unref);
 }
 
 static gboolean
@@ -119,7 +131,7 @@ app_is_stale (ShellApp *app)
   if (shell_app_is_window_backed (app))
     return FALSE;
 
-  info = g_desktop_app_info_new (shell_app_get_id (app));
+  info = shell_app_cache_get_info (NULL, shell_app_get_id (app));
   if (!info)
     return TRUE;
 
@@ -156,12 +168,52 @@ stale_app_remove_func (gpointer key,
   return app_is_stale (value);
 }
 
-static void
-installed_changed (GAppInfoMonitor *monitor,
-                   gpointer         user_data)
+static gboolean
+rescan_icon_theme_cb (gpointer user_data)
 {
-  ShellAppSystem *self = user_data;
+  ShellAppSystemPrivate *priv;
+  ShellAppSystem *self;
+  StTextureCache *texture_cache;
+  gboolean rescanned;
 
+  self = (ShellAppSystem *) user_data;
+  priv = self->priv;
+
+  texture_cache = st_texture_cache_get_default ();
+  rescanned = st_texture_cache_rescan_icon_theme (texture_cache);
+
+  priv->n_rescan_retries++;
+
+  if (rescanned || priv->n_rescan_retries >= MAX_RESCAN_RETRIES)
+    {
+      priv->n_rescan_retries = 0;
+      priv->rescan_icons_timeout_id = 0;
+      return G_SOURCE_REMOVE;
+    }
+
+  return G_SOURCE_CONTINUE;
+}
+
+static void
+rescan_icon_theme (ShellAppSystem *self)
+{
+  ShellAppSystemPrivate *priv = self->priv;
+
+  priv->n_rescan_retries = 0;
+
+  if (priv->rescan_icons_timeout_id > 0)
+    return;
+
+  priv->rescan_icons_timeout_id = g_timeout_add (RESCAN_TIMEOUT_MS,
+                                                 rescan_icon_theme_cb,
+                                                 self);
+}
+
+static void
+installed_changed (ShellAppCache  *cache,
+                   ShellAppSystem *self)
+{
+  rescan_icon_theme (self);
   scan_startup_wm_class_to_id (self);
 
   g_hash_table_foreach_remove (self->priv->id_to_app, stale_app_remove_func, NULL);
@@ -173,7 +225,7 @@ static void
 shell_app_system_init (ShellAppSystem *self)
 {
   ShellAppSystemPrivate *priv;
-  GAppInfoMonitor *monitor;
+  ShellAppCache *cache;
 
   self->priv = priv = shell_app_system_get_instance_private (self);
 
@@ -184,9 +236,9 @@ shell_app_system_init (ShellAppSystem *self)
 
   priv->startup_wm_class_to_id = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
 
-  monitor = g_app_info_monitor_get ();
-  g_signal_connect (monitor, "changed", G_CALLBACK (installed_changed), self);
-  installed_changed (monitor, self);
+  cache = shell_app_cache_get_default ();
+  g_signal_connect (cache, "changed", G_CALLBACK (installed_changed), self);
+  installed_changed (cache, self);
 }
 
 static void
@@ -199,6 +251,9 @@ shell_app_system_finalize (GObject *object)
   g_hash_table_destroy (priv->id_to_app);
   g_hash_table_destroy (priv->startup_wm_class_to_id);
 
+  if (priv->rescan_icons_timeout_id)
+    g_source_remove (priv->rescan_icons_timeout_id);
+
   G_OBJECT_CLASS (shell_app_system_parent_class)->finalize (object);
 }
 
@@ -237,7 +292,7 @@ shell_app_system_lookup_app (ShellAppSystem   *self,
   if (app)
     return app;
 
-  info = g_desktop_app_info_new (id);
+  info = shell_app_cache_get_info (NULL, id);
   if (!info)
     return NULL;
 

src/shell-global.c

@@ -87,6 +87,8 @@ struct _ShellGlobal {
   /* For sound notifications */
   ca_context *sound_context;
 
+  GHashTable *save_ops;
+
   gboolean has_modal;
   gboolean frame_timestamps;
   gboolean frame_finish_timestamp;
@@ -322,6 +324,10 @@ shell_global_init (ShellGlobal *global)
                                      NULL);
 
   g_strfreev (search_path);
+
+  global->save_ops = g_hash_table_new_full (g_file_hash,
+                                            (GEqualFunc) g_file_equal,
+                                            g_object_unref, g_object_unref);
 }
 
 static void
@@ -341,6 +347,8 @@ shell_global_finalize (GObject *object)
   g_free (global->imagedir);
   g_free (global->userdatadir);
 
+  g_hash_table_unref (global->save_ops);
+
   G_OBJECT_CLASS(shell_global_parent_class)->finalize (object);
 }
 
@@ -1757,20 +1765,133 @@ shell_global_get_session_mode (ShellGlobal *global)
 }
 
 static void
-save_variant (GFile      *dir,
-              const char *property_name,
-              GVariant   *variant)
+delete_variant_cb (GObject      *object,
+                   GAsyncResult *result,
+                   gpointer      user_data)
+{
+  ShellGlobal *global = user_data;
+  GError *error = NULL;
+
+  if (!g_file_delete_finish (G_FILE (object), result, &error))
+    {
+      if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+        {
+          g_warning ("Could not delete runtime/persistent state file: %s\n",
+                     error->message);
+        }
+
+      g_error_free (error);
+    }
+
+  g_hash_table_remove (global->save_ops, object);
+}
+
+static void
+replace_contents_worker (GTask        *task,
+                         gpointer      source_object,
+                         gpointer      task_data,
+                         GCancellable *cancellable)
+{
+  GFile *file = source_object;
+  GBytes *bytes = task_data;
+  GError *error = NULL;
+  const gchar *data;
+  gsize len;
+
+  data = g_bytes_get_data (bytes, &len);
+
+  if (!g_file_replace_contents (file, data, len, NULL, FALSE,
+                                G_FILE_CREATE_REPLACE_DESTINATION,
+                                NULL, cancellable, &error))
+    g_task_return_error (task, g_steal_pointer (&error));
+  else
+    g_task_return_boolean (task, TRUE);
+}
+
+static void
+replace_contents_async (GFile               *path,
+                        GBytes              *bytes,
+                        GCancellable        *cancellable,
+                        GAsyncReadyCallback  callback,
+                        gpointer             user_data)
+{
+  g_autoptr(GTask) task = NULL;
+
+  g_assert (G_IS_FILE (path));
+  g_assert (bytes != NULL);
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  task = g_task_new (path, cancellable, callback, user_data);
+  g_task_set_source_tag (task, replace_contents_async);
+  g_task_set_task_data (task, g_bytes_ref (bytes), (GDestroyNotify)g_bytes_unref);
+  g_task_run_in_thread (task, replace_contents_worker);
+}
+
+static gboolean
+replace_contents_finish (GFile         *file,
+                         GAsyncResult  *result,
+                         GError       **error)
+{
+  return g_task_propagate_boolean (G_TASK (result), error);
+}
+
+static void
+replace_variant_cb (GObject      *object,
+                    GAsyncResult *result,
+                    gpointer      user_data)
+{
+  ShellGlobal *global = user_data;
+  GError *error = NULL;
+
+  if (!replace_contents_finish (G_FILE (object), result, &error))
+    {
+      if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+        {
+          g_warning ("Could not replace runtime/persistent state file: %s\n",
+                     error->message);
+        }
+
+      g_error_free (error);
+    }
+
+  g_hash_table_remove (global->save_ops, object);
+}
+
+static void
+save_variant (ShellGlobal *global,
+              GFile       *dir,
+              const char  *property_name,
+              GVariant    *variant)
 {
   GFile *path = g_file_get_child (dir, property_name);
+  GCancellable *cancellable;
+
+  cancellable = g_hash_table_lookup (global->save_ops, path);
+  g_cancellable_cancel (cancellable);
+
+  cancellable = g_cancellable_new ();
+  g_hash_table_insert (global->save_ops, g_object_ref (path), cancellable);
 
   if (variant == NULL || g_variant_get_data (variant) == NULL)
-    (void) g_file_delete (path, NULL, NULL);
+    {
+      g_file_delete_async (path, G_PRIORITY_DEFAULT, cancellable,
+                           delete_variant_cb, global);
+    }
   else
     {
-      gsize size = g_variant_get_size (variant);
-      g_file_replace_contents (path, g_variant_get_data (variant), size,
-                               NULL, FALSE, G_FILE_CREATE_REPLACE_DESTINATION,
-                               NULL, NULL, NULL);
+      g_autoptr(GBytes) bytes = NULL;
+
+      bytes = g_bytes_new_with_free_func (g_variant_get_data (variant),
+                                          g_variant_get_size (variant),
+                                          (GDestroyNotify)g_variant_unref,
+                                          g_variant_ref (variant));
+      /* g_file_replace_contents_async() can potentially fsync() from the
+       * calling thread when completing the asynchronous task. Instead, we
+       * want to force that fsync() to a thread to avoid blocking the
+       * compositor main loop. Using our own replace_contents_async()
+       * simply executes the operation synchronously from a thread.
+       */
+      replace_contents_async (path, bytes, cancellable, replace_variant_cb, global);
     }
 
   g_object_unref (path);
@@ -1824,7 +1945,7 @@ shell_global_set_runtime_state (ShellGlobal  *global,
                                 const char   *property_name,
                                 GVariant     *variant)
 {
-  save_variant (global->runtime_state_path, property_name, variant);
+  save_variant (global, global->runtime_state_path, property_name, variant);
 }
 
 /**
@@ -1859,7 +1980,7 @@ shell_global_set_persistent_state (ShellGlobal *global,
                                    const char  *property_name,
                                    GVariant    *variant)
 {
-  save_variant (global->userdatadir_path, property_name, variant);
+  save_variant (global, global->userdatadir_path, property_name, variant);
 }
 
 /**

src/st/st-adjustment.c

@@ -205,7 +205,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   g_object_class_install_property (object_class,
                                    PROP_UPPER,
                                    g_param_spec_double ("upper",
@@ -215,7 +216,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   g_object_class_install_property (object_class,
                                    PROP_VALUE,
                                    g_param_spec_double ("value",
@@ -225,7 +227,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   g_object_class_install_property (object_class,
                                    PROP_STEP_INC,
                                    g_param_spec_double ("step-increment",
@@ -235,7 +238,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   g_object_class_install_property (object_class,
                                    PROP_PAGE_INC,
                                    g_param_spec_double ("page-increment",
@@ -245,7 +249,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   g_object_class_install_property (object_class,
                                    PROP_PAGE_SIZE,
                                    g_param_spec_double ("page-size",
@@ -255,7 +260,8 @@ st_adjustment_class_init (StAdjustmentClass *klass)
                                                         G_MAXDOUBLE,
                                                         0.0,
                                                         ST_PARAM_READWRITE |
-                                                        G_PARAM_CONSTRUCT));
+                                                        G_PARAM_CONSTRUCT |
+                                                        G_PARAM_EXPLICIT_NOTIFY));
   /**
    * StAdjustment::changed:
    * @self: the #StAdjustment

src/st/st-bin.c

@@ -177,15 +177,15 @@ st_bin_get_preferred_height (ClutterActor *self,
 }
 
 static void
-st_bin_dispose (GObject *gobject)
+st_bin_destroy (ClutterActor *actor)
 {
-  StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (gobject));
+  StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (actor));
 
   if (priv->child)
     clutter_actor_destroy (priv->child);
   g_assert (priv->child == NULL);
 
-  G_OBJECT_CLASS (st_bin_parent_class)->dispose (gobject);
+  CLUTTER_ACTOR_CLASS (st_bin_parent_class)->destroy (actor);
 }
 
 static void
@@ -315,11 +315,11 @@ st_bin_class_init (StBinClass *klass)
 
   gobject_class->set_property = st_bin_set_property;
   gobject_class->get_property = st_bin_get_property;
-  gobject_class->dispose = st_bin_dispose;
 
   actor_class->get_preferred_width = st_bin_get_preferred_width;
   actor_class->get_preferred_height = st_bin_get_preferred_height;
   actor_class->allocate = st_bin_allocate;
+  actor_class->destroy = st_bin_destroy;
 
   widget_class->popup_menu = st_bin_popup_menu;
   widget_class->navigate_focus = st_bin_navigate_focus;

src/st/st-box-layout.c

@@ -90,7 +90,7 @@ adjustment_value_notify_cb (StAdjustment *adjustment,
                             GParamSpec   *pspec,
                             StBoxLayout  *box)
 {
-  clutter_actor_queue_redraw (CLUTTER_ACTOR (box));
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (box));
 }
 
 static void
@@ -490,7 +490,7 @@ st_box_layout_get_paint_volume (ClutterActor       *actor,
                                 ClutterPaintVolume *volume)
 {
   StBoxLayout *self = ST_BOX_LAYOUT (actor);
-  gdouble x, y;
+  gdouble x, y, lower, upper;
   StBoxLayoutPrivate *priv = self->priv;
   StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
   ClutterActorBox allocation_box;
@@ -505,13 +505,42 @@ st_box_layout_get_paint_volume (ClutterActor       *actor,
    * our paint volume on that. */
   if (priv->hadjustment || priv->vadjustment)
     {
+      gdouble width, height;
+
       clutter_actor_get_allocation_box (actor, &allocation_box);
       st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
       origin.x = content_box.x1 - allocation_box.x1;
       origin.y = content_box.y1 - allocation_box.y2;
       origin.z = 0.f;
-      clutter_paint_volume_set_width (volume, content_box.x2 - content_box.x1);
-      clutter_paint_volume_set_height (volume, content_box.y2 - content_box.y1);
+
+      if (priv->hadjustment)
+        {
+          g_object_get (priv->hadjustment,
+                        "lower", &lower,
+                        "upper", &upper,
+                        NULL);
+          width = upper - lower;
+        }
+      else
+        {
+          width = content_box.x2 - content_box.x1;
+        }
+
+      if (priv->vadjustment)
+        {
+          g_object_get (priv->vadjustment,
+                        "lower", &lower,
+                        "upper", &upper,
+                        NULL);
+          height = upper - lower;
+        }
+      else
+        {
+          height = content_box.y2 - content_box.y1;
+        }
+
+      clutter_paint_volume_set_width (volume, width);
+      clutter_paint_volume_set_height (volume, height);
     }
   else if (!CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->get_paint_volume (actor, volume))
     return FALSE;

src/st/st-button.c

@@ -248,14 +248,17 @@ st_button_touch_event (ClutterActor      *actor,
   if (event->type == CLUTTER_TOUCH_BEGIN && !priv->press_sequence)
     {
       clutter_input_device_sequence_grab (device, sequence, actor);
-      st_button_press (button, device, 0, sequence);
+      if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
+        st_button_press (button, device, 0, sequence);
       return CLUTTER_EVENT_STOP;
     }
   else if (event->type == CLUTTER_TOUCH_END &&
            priv->device == device &&
            priv->press_sequence == sequence)
     {
-      st_button_release (button, device, mask, 0, sequence);
+      if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
+        st_button_release (button, device, mask, 0, sequence);
+
       clutter_input_device_sequence_ungrab (device, sequence);
       return CLUTTER_EVENT_STOP;
     }

src/st/st-entry.c

@@ -906,6 +906,13 @@ st_entry_unmap (ClutterActor *actor)
   CLUTTER_ACTOR_CLASS (st_entry_parent_class)->unmap (actor);
 }
 
+static gboolean
+st_entry_get_paint_volume (ClutterActor       *actor,
+                           ClutterPaintVolume *volume)
+{
+  return clutter_paint_volume_set_from_allocation (volume, actor);
+}
+
 static void
 st_entry_class_init (StEntryClass *klass)
 {
@@ -923,6 +930,7 @@ st_entry_class_init (StEntryClass *klass)
   actor_class->allocate = st_entry_allocate;
   actor_class->paint = st_entry_paint;
   actor_class->unmap = st_entry_unmap;
+  actor_class->get_paint_volume = st_entry_get_paint_volume;
 
   actor_class->key_press_event = st_entry_key_press_event;
   actor_class->key_focus_in = st_entry_key_focus_in;
@@ -1287,10 +1295,10 @@ st_entry_get_input_hints (StEntry *entry)
   return clutter_text_get_input_hints (CLUTTER_TEXT (priv->entry));
 }
 
-static gboolean
-_st_entry_icon_press_cb (ClutterActor       *actor,
-                         ClutterButtonEvent *event,
-                         StEntry            *entry)
+static void
+_st_entry_icon_clicked_cb (ClutterClickAction *action,
+                           ClutterActor       *actor,
+                           StEntry            *entry)
 {
   StEntryPrivate *priv = ST_ENTRY_PRIV (entry);
 
@@ -1298,8 +1306,6 @@ _st_entry_icon_press_cb (ClutterActor       *actor,
     g_signal_emit (entry, entry_signals[PRIMARY_ICON_CLICKED], 0);
   else
     g_signal_emit (entry, entry_signals[SECONDARY_ICON_CLICKED], 0);
-
-  return FALSE;
 }
 
 static void
@@ -1309,21 +1315,24 @@ _st_entry_set_icon (StEntry       *entry,
 {
   if (*icon)
     {
-      g_signal_handlers_disconnect_by_func (*icon,
-                                            _st_entry_icon_press_cb,
-                                            entry);
+      clutter_actor_remove_action_by_name (*icon, "entry-icon-action");
       clutter_actor_remove_child (CLUTTER_ACTOR (entry), *icon);
       *icon = NULL;
     }
 
   if (new_icon)
     {
+      ClutterAction *action;
+
       *icon = g_object_ref (new_icon);
 
       clutter_actor_set_reactive (*icon, TRUE);
       clutter_actor_add_child (CLUTTER_ACTOR (entry), *icon);
-      g_signal_connect (*icon, "button-release-event",
-                        G_CALLBACK (_st_entry_icon_press_cb), entry);
+
+      action = clutter_click_action_new ();
+      clutter_actor_add_action_with_name (*icon, "entry-icon-action", action);
+      g_signal_connect (action, "clicked",
+                        G_CALLBACK (_st_entry_icon_clicked_cb), entry);
     }
 
   clutter_actor_queue_relayout (CLUTTER_ACTOR (entry));

src/st/st-scroll-view.c

@@ -304,6 +304,13 @@ st_scroll_view_pick (ClutterActor       *actor,
     clutter_actor_paint (priv->vscroll);
 }
 
+static gboolean
+st_scroll_view_get_paint_volume (ClutterActor       *actor,
+                                 ClutterPaintVolume *volume)
+{
+  return clutter_paint_volume_set_from_allocation (volume, actor);
+}
+
 static double
 get_scrollbar_width (StScrollView *scroll,
                      gfloat        for_height)
@@ -793,6 +800,7 @@ st_scroll_view_class_init (StScrollViewClass *klass)
 
   actor_class->paint = st_scroll_view_paint;
   actor_class->pick = st_scroll_view_pick;
+  actor_class->get_paint_volume = st_scroll_view_get_paint_volume;
   actor_class->get_preferred_width = st_scroll_view_get_preferred_width;
   actor_class->get_preferred_height = st_scroll_view_get_preferred_height;
   actor_class->allocate = st_scroll_view_allocate;

src/st/st-texture-cache.c

@@ -780,13 +780,13 @@ st_texture_cache_load (StTextureCache       *cache,
   if (!texture)
     {
       texture = load (cache, key, data, error);
-      if (texture)
+      if (texture && policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
         g_hash_table_insert (cache->priv->keyed_cache, g_strdup (key), texture);
-      else
-        return NULL;
     }
 
-  cogl_object_ref (texture);
+  if (texture && policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
+    cogl_object_ref (texture);
+
   return texture;
 }
 
@@ -984,7 +984,7 @@ file_changed_cb (GFileMonitor      *monitor,
   char *key;
   guint file_hash;
 
-  if (event_type != G_FILE_MONITOR_EVENT_CHANGED)
+  if (event_type != G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT)
     return;
 
   file_hash = g_file_hash (file);
@@ -1425,3 +1425,11 @@ st_texture_cache_get_default (void)
     instance = g_object_new (ST_TYPE_TEXTURE_CACHE, NULL);
   return instance;
 }
+
+gboolean
+st_texture_cache_rescan_icon_theme (StTextureCache *cache)
+{
+  StTextureCachePrivate *priv = cache->priv;
+
+  return gtk_icon_theme_rescan_if_needed (priv->icon_theme);
+}

src/st/st-texture-cache.h

@@ -106,4 +106,6 @@ CoglTexture * st_texture_cache_load (StTextureCache       *cache,
                                      void                 *data,
                                      GError              **error);
 
+gboolean st_texture_cache_rescan_icon_theme (StTextureCache *cache);
+
 #endif /* __ST_TEXTURE_CACHE_H__ */

src/st/st-theme-node-drawing.c

@@ -229,9 +229,9 @@ unpremultiply (ClutterColor *color)
 {
   if (color->alpha != 0)
     {
-      color->red = (color->red * 255 + 127) / color->alpha;
-      color->green = (color->green * 255 + 127) / color->alpha;
-      color->blue = (color->blue * 255 + 127) / color->alpha;
+      color->red = MIN((color->red * 255 + 127) / color->alpha, 255);
+      color->green = MIN((color->green * 255 + 127) / color->alpha, 255);
+      color->blue = MIN((color->blue * 255 + 127) / color->alpha, 255);
     }
 }
 
@@ -402,7 +402,7 @@ st_theme_node_lookup_corner (StThemeNode    *node,
     return COGL_INVALID_HANDLE;
 
   key = corner_to_string (&corner);
-  texture = st_texture_cache_load (cache, key, ST_TEXTURE_CACHE_POLICY_NONE, load_corner, &corner, NULL);
+  texture = st_texture_cache_load (cache, key, ST_TEXTURE_CACHE_POLICY_FOREVER, load_corner, &corner, NULL);
 
   if (texture)
     {
@@ -1414,6 +1414,32 @@ st_theme_node_load_background_image (StThemeNode *node)
   return node->background_texture != COGL_INVALID_HANDLE;
 }
 
+static gboolean
+st_theme_node_invalidate_resources_for_file (StThemeNode *node,
+                                             GFile       *file)
+{
+  StBorderImage *border_image;
+  gboolean changed = FALSE;
+  GFile *theme_file;
+
+  theme_file = st_theme_node_get_background_image (node);
+  if ((theme_file != NULL) && g_file_equal (theme_file, file))
+    {
+      st_theme_node_invalidate_background_image (node);
+      changed = TRUE;
+    }
+
+  border_image = st_theme_node_get_border_image (node);
+  theme_file = border_image ? st_border_image_get_file (border_image) : NULL;
+  if ((theme_file != NULL) && g_file_equal (theme_file, file))
+    {
+      st_theme_node_invalidate_border_image (node);
+      changed = TRUE;
+    }
+
+  return changed;
+}
+
 static void st_theme_node_prerender_shadow (StThemeNodePaintState *state);
 
 static void
@@ -2751,3 +2777,17 @@ st_theme_node_paint_state_invalidate (StThemeNodePaintState *state)
   state->alloc_width = 0;
   state->alloc_height = 0;
 }
+
+gboolean
+st_theme_node_paint_state_invalidate_for_file (StThemeNodePaintState *state,
+                                               GFile                 *file)
+{
+  if (state->node != NULL &&
+      st_theme_node_invalidate_resources_for_file (state->node, file))
+    {
+      st_theme_node_paint_state_invalidate (state);
+      return TRUE;
+    }
+
+  return FALSE;
+}

src/st/st-theme-node.h

@@ -287,6 +287,9 @@ void st_theme_node_paint_state_free (StThemeNodePaintState *state);
 void st_theme_node_paint_state_copy (StThemeNodePaintState *state,
                                      StThemeNodePaintState *other);
 void st_theme_node_paint_state_invalidate (StThemeNodePaintState *state);
+gboolean st_theme_node_paint_state_invalidate_for_file (StThemeNodePaintState *state,
+                                                        GFile                 *file);
+
 void st_theme_node_paint_state_set_node (StThemeNodePaintState *state,
                                          StThemeNode           *node);
 

src/st/st-widget.c

@@ -289,44 +289,17 @@ st_widget_texture_cache_changed (StTextureCache *cache,
 {
   StWidget *actor = ST_WIDGET (user_data);
   StWidgetPrivate *priv = st_widget_get_instance_private (actor);
-  StThemeNode *node = priv->theme_node;
-  StBorderImage *border_image;
   gboolean changed = FALSE;
-  GFile *theme_file;
+  int i;
 
-  if (node == NULL)
-    return;
-
-  theme_file = st_theme_node_get_background_image (node);
-  if ((theme_file != NULL) && g_file_equal (theme_file, file))
+  for (i = 0; i < G_N_ELEMENTS (priv->paint_states); i++)
     {
-      st_theme_node_invalidate_background_image (node);
-      changed = TRUE;
+      StThemeNodePaintState *paint_state = &priv->paint_states[i];
+      changed |= st_theme_node_paint_state_invalidate_for_file (paint_state, file);
     }
 
-  border_image = st_theme_node_get_border_image (node);
-  theme_file = border_image ? st_border_image_get_file (border_image) : NULL;
-  if ((theme_file != NULL) && g_file_equal (theme_file, file))
-    {
-      st_theme_node_invalidate_border_image (node);
-      changed = TRUE;
-    }
-
-  if (changed)
-    {
-      /* If we prerender the background / border, we need to update
-       * the paint state. We should probably implement a method to
-       * the theme node to determine this, but for now, just wipe
-       * the entire paint state.
-       *
-       * Use the existing state instead of a new one because it's
-       * assumed the rest of the state will stay the same.
-       */
-      st_theme_node_paint_state_invalidate (current_paint_state (actor));
-
-      if (clutter_actor_is_mapped (CLUTTER_ACTOR (actor)))
-        clutter_actor_queue_redraw (CLUTTER_ACTOR (actor));
-    }
+  if (changed && clutter_actor_is_mapped (CLUTTER_ACTOR (actor)))
+    clutter_actor_queue_redraw (CLUTTER_ACTOR (actor));
 }
 
 static void