Add toggle button (#304)

* Add toggle button

* Toggle button documentation

* Fix issues

* Add env variable for toggle button

* Add state update command for toggle buttons

* Fix Uncrustify

* Update README

README.md

@@ -38,6 +38,7 @@ Table of Contents
   * [Run](#run)
   * [Control Center Shortcuts](#control-center-shortcuts)
   * [Configuring](#configuring)
+    * [Toggle Buttons](#toggle-buttons)
   * [Notification Inhibition](#notification-inhibition)
   * [Scripting](#scripting)
      * [Disable scripting](#disable-scripting)
@@ -242,6 +243,32 @@ to your `~/.config/swaync/` folder to customize without needing root access.
 **Tip**: running swaync with `GTK_DEBUG=interactive swaync` will open a inspector 
 window that'll allow you to see all of the CSS classes + other information.
 
+## Toggle Buttons
+
+To add toggle buttons to your control center you can set the "type" in any acton to "toggle".
+The toggle button supports different commands depending on the state of the button and
+an "update_command" to update the state in case of changes from outside swaync. The update_command
+is called every time the control center is opened/closed.
+The active toggle button also gains the css-class ".toggle:checked"
+
+`config.json` example:
+
+```json
+{
+  "buttons-gird": { // also works with actions in menubar widget
+    "actions": [
+      {
+        "label": "WiFi",
+        "type": "toggle",
+        "active": true,
+        "command": "sh -c '[[ $SWAYNC_TOGGLE_STATE == true ]] && nmcli radio wifi on || nmcli radio wifi off'",
+        "update_command": "sh -c '[[ $(nmcli radio wifi) == \"enabled\" ]] && echo true || echo false'"
+      }
+    ]
+  }
+}
+```
+
 ## Notification Inhibition
 
 Notifications can be inhibited through the provided `swaync-client` executable

man/swaync.5.scd

@@ -377,6 +377,22 @@ config file to be able to detect config errors
 										type: string ++
 										default: "" ++
 										description: "Command to be executed on click" ++
+									type: ++
+										type: string ++
+										default: "normal" ++
+										description: Type of the button. ++
+											Toggle buttons receive the '.active' css class ++
+										enum: ["normal", "toggle"] ++
+									update-command: ++
+										type: string ++
+										default: "" ++
+										description: "Command to be executed on visibility change of ++
+											cc to update the active state of the toggle button (should ++
+											echo true or false)" ++
+									active: ++
+										type: bool ++
+										default: false ++
+										description: Wether the toggle button is active as default or not ++
 							description: A list of actions containing a label and a command ++
 					description: A button to reveal a dropdown with action-buttons ++
 				buttons#<name>: ++
@@ -402,6 +418,24 @@ config file to be able to detect config errors
 										type: string ++
 										default: "" ++
 										description: "Command to be executed on click" ++
+									type: ++
+										type: string ++
+										default: "normal" ++
+										description: Type of the button ++
+											Toggle buttons receive the '.active' css class and an env ++
+											variable "SWAYNC_TOGGLE_STATE" is set. See example usage in the ++
+											default config.json ++
+										enum: ["normal", "toggle"] ++
+									update-command: ++
+										type: string ++
+										default: "" ++
+										description: "Command to be executed on visibility change of ++
+											cc to update the active state of the toggle button (should ++
+											echo true or false)" ++
+									active: ++
+										type: bool ++
+										default: false ++
+										description: Wether the toggle button is active as default or not ++
 							description: A list of actions containing a label and a command ++
 					description: A list of buttons to be displayed in the menu-button-bar ++
 		*buttons-grid*++
@@ -422,6 +456,18 @@ config file to be able to detect config errors
 								type: string ++
 								default: "" ++
 								description: "Command to be executed on click" ++
+							type: ++
+								type: string ++
+								default: "normal" ++
+								description: Type of the button ++
+									Toggle buttons receive the '.active' css class and an env ++
+									variable "SWAYNC_TOGGLE_STATE" is set. See example usage in the ++
+									default config.json ++
+								enum: ["normal", "toggle"] ++
+							active: ++
+								type: bool ++
+								default: false ++
+								description: Wether the toggle button is active as default or not ++
 					description: A list of actions containing a label and a command ++
 			description: A grid of buttons that execute shell commands ++
 #START pulse-audio

src/config.json.in

@@ -74,6 +74,17 @@
     "mpris": {
       "image-size": 96,
       "image-radius": 12
+    },
+    "buttons-grid": {
+      "actions": [
+        {
+          "label": "直",
+          "type": "toggle",
+          "active": true,
+          "command": "sh -c '[[ $SWAYNC_TOGGLE_STATE == true ]] && nmcli radio wifi on || nmcli radio wifi off'",
+          "update_command": "sh -c '[[ $(nmcli radio wifi) == \"enabled\" ]] && echo true || echo false'"
+        }
+      ]
     }
   }
 }

src/configSchema.json

@@ -427,6 +427,22 @@
                 "type": "string",
                 "description": "Command to be executed on click",
                 "default": ""
+              },
+              "type": {
+                "type": "string",
+                "description": "Type of the button; toggle buttons receive the .active css class and an env variable 'SWAYNC_TOGGLE_STATE' is set. See example in the default config.json",
+                "default": "normal",
+                "enum": ["normal", "toggle"]
+              },
+              "update-command": {
+                "type": "string",
+                "description": "Command to be executed on visibility change of cc to update the active state of the toggle button (should echo true or false)",
+                "default": ""
+              },
+              "active": {
+                  "type": "bool",
+                  "description": "Wether the toggle button is active as default or not",
+                  "default": false
               }
             }
           }

src/controlCenter/widgets/baseWidget.vala

@@ -14,6 +14,20 @@ namespace SwayNotificationCenter.Widgets {
         public unowned SwayncDaemon swaync_daemon;
         public unowned NotiDaemon noti_daemon;
 
+        public enum ButtonType {
+            TOGGLE,
+            NORMAL;
+
+            public static ButtonType parse (string value) {
+              switch (value) {
+                case "toggle":
+                  return ButtonType.TOGGLE;
+                default:
+                  return ButtonType.NORMAL;
+              }
+            }
+        }
+
         protected BaseWidget (string suffix, SwayncDaemon swaync_daemon, NotiDaemon noti_daemon) {
             this.suffix = suffix;
             this.key = widget_name + (suffix.length > 0 ? "#%s".printf (suffix) : "");
@@ -91,14 +105,23 @@ namespace SwayNotificationCenter.Widgets {
             for (int i = 0; i < actions.get_length (); i++) {
                 string label = actions.get_object_element (i).get_string_member_with_default ("label", "label");
                 string command = actions.get_object_element (i).get_string_member_with_default ("command", "");
+                string t = actions.get_object_element (i).get_string_member_with_default ("type", "normal");
+                ButtonType type = ButtonType.parse (t);
+                string update_command =
+                  actions.get_object_element (i).get_string_member_with_default ("update-command", "");
+                bool active = actions.get_object_element (i).get_boolean_member_with_default ("active", false);
                 res[i] = Action () {
                     label = label,
-                    command = command
+                    command = command,
+                    type = type,
+                    update_command = update_command,
+                    active = active
                 };
             }
             return res;
         }
 
+
         protected async void execute_command (string cmd, string[] env_additions = {}) {
             string msg = "";
             yield Functions.execute_command (cmd, env_additions, out msg);

src/controlCenter/widgets/buttonsGrid/buttonsGrid.vala

@@ -10,6 +10,7 @@ namespace SwayNotificationCenter.Widgets {
         }
 
         Action[] actions;
+        List<ToggleButton> toggle_buttons;
 
         public ButtonsGrid (string suffix, SwayncDaemon swaync_daemon, NotiDaemon noti_daemon) {
             base (suffix, swaync_daemon, noti_daemon);
@@ -26,14 +27,29 @@ namespace SwayNotificationCenter.Widgets {
 
             // add action to container
             foreach (var act in actions) {
+                switch (act.type) {
+                    case ButtonType.TOGGLE:
+                        ToggleButton tb = new ToggleButton (act.label, act.command, act.update_command, act.active);
+                        container.insert (tb, -1);
+                        toggle_buttons.append (tb);
+                        break;
+                    default:
                         Gtk.Button b = new Gtk.Button.with_label (act.label);
-
                         b.clicked.connect (() => execute_command.begin (act.command));
-
                         container.insert (b, -1);
+                        break;
+                }
             }
 
             show_all ();
         }
+
+        public override void on_cc_visibility_change (bool value) {
+            if (!value) {
+                foreach (var tb in toggle_buttons) {
+                    tb.on_update.begin ();
+                }
+            }
+        }
     }
 }

src/controlCenter/widgets/menubar/menubar.vala

@@ -25,6 +25,9 @@ namespace SwayNotificationCenter.Widgets {
     public struct Action {
         string ? label;
         string ? command;
+        BaseWidget.ButtonType ? type;
+        string ? update_command;
+        bool ? active;
     }
 
     public class Menubar : BaseWidget {
@@ -38,6 +41,7 @@ namespace SwayNotificationCenter.Widgets {
         Gtk.Box topbar_container;
 
         List<ConfigObject ?> menu_objects;
+        List<ToggleButton> toggle_buttons;
 
         public Menubar (string suffix, SwayncDaemon swaync_daemon, NotiDaemon noti_daemon) {
             base (suffix, swaync_daemon, noti_daemon);
@@ -74,11 +78,18 @@ namespace SwayNotificationCenter.Widgets {
                     if (obj.name != null) container.get_style_context ().add_class (obj.name);
 
                     foreach (Action a in obj.actions) {
+                        switch (a.type) {
+                            case ButtonType.TOGGLE:
+                                ToggleButton tb = new ToggleButton (a.label, a.command, a.update_command, a.active);
+                                container.add (tb);
+                                toggle_buttons.append (tb);
+                                break;
+                            default:
                                 Gtk.Button b = new Gtk.Button.with_label (a.label);
-
                                 b.clicked.connect (() => execute_command.begin (a.command));
-
                                 container.add (b);
+                                break;
+                        }
                     }
                     switch (obj.position) {
                         case Position.LEFT:
@@ -210,6 +221,9 @@ namespace SwayNotificationCenter.Widgets {
                 foreach (var obj in menu_objects) {
                     obj.revealer ?.set_reveal_child (false);
                 }
+                foreach (var tb in toggle_buttons) {
+                    tb.on_update.begin ();
+                }
             }
         }
     }

src/controlCenter/widgets/shared/toggleButton.vala

@@ -0,0 +1,44 @@
+namespace SwayNotificationCenter.Widgets {
+    class ToggleButton : Gtk.ToggleButton {
+
+        private string command;
+        private string update_command;
+
+        public ToggleButton (string label, string command, string update_command, bool active) {
+            this.command = command;
+            this.update_command = update_command;
+            this.label = label;
+
+            if (active) {
+                this.active = true;
+            }
+
+            this.toggled.connect (on_toggle);
+        }
+
+        private async void on_toggle () {
+            string msg = "";
+            string[] env_additions = { "SWAYNC_TOGGLE_STATE=" + this.active.to_string () };
+            yield Functions.execute_command (this.command, env_additions, out msg);
+        }
+
+        public async void on_update () {
+            if (update_command == "") return;
+            string msg = "";
+            string[] env_additions = { "SWAYNC_TOGGLE_STATE=" + this.active.to_string () };
+            yield Functions.execute_command (this.update_command, env_additions, out msg);
+            try {
+              // remove trailing whitespaces
+              Regex regex = new Regex ("\\s+$");
+              string res = regex.replace (msg, msg.length, 0, "");
+              if (res.up () == "TRUE") {
+                this.active = true;
+              } else {
+                this.active = false;
+              }
+            } catch (RegexError e) {
+              stderr.printf ("RegexError: %s\n", e.message);
+            }
+        }
+    }
+}

src/functions.vala

@@ -313,13 +313,38 @@ namespace SwayNotificationCenter {
                 Shell.parse_argv (cmd, out argvp);
 
                 Pid child_pid;
-                Process.spawn_async (
+                int std_input;
+                int std_output;
+                int std_err;
+                Process.spawn_async_with_pipes (
                     "/",
                     argvp,
                     spawn_env,
                     SpawnFlags.SEARCH_PATH | SpawnFlags.DO_NOT_REAP_CHILD,
                     null,
-                    out child_pid);
+                    out child_pid,
+                    out std_input,
+                    out std_output,
+                    out std_err);
+
+                // stdout:
+                string res = "";
+                IOChannel output = new IOChannel.unix_new (std_output);
+                output.add_watch (IOCondition.IN | IOCondition.HUP, (channel, condition) => {
+                    if (condition == IOCondition.HUP) {
+                        return false;
+                    }
+                    try {
+                        channel.read_line (out res, null, null);
+                        return true;
+                    } catch (IOChannelError e) {
+                        stderr.printf ("stdout: IOChannelError: %s\n", e.message);
+                        return false;
+                    } catch (ConvertError e) {
+                        stderr.printf ("stdout: ConvertError: %s\n", e.message);
+                        return false;
+                    }
+                });
 
                 // Close the child when the spawned process is idling
                 int end_status = 0;
@@ -330,6 +355,7 @@ namespace SwayNotificationCenter {
                 });
                 // Waits until `run_script.callback()` is called above
                 yield;
+                msg = res;
                 return end_status == 0;
             } catch (Error e) {
                 stderr.printf ("Run_Script Error: %s\n", e.message);

src/meson.build

@@ -26,6 +26,7 @@ widget_sources = [
   # Helpers
   'controlCenter/widgets/baseWidget.vala',
   'controlCenter/widgets/factory.vala',
+  'controlCenter/widgets/shared/toggleButton.vala',
   # Widget: Title
   'controlCenter/widgets/title/title.vala',
   # Widget: Dnd

src/style.css

@@ -282,8 +282,11 @@
   border-radius: 12px;
 }
 
+/* style given to the active toggle button */
+.widget-buttons-grid>flowbox>flowboxchild>button.toggle:checked {
+}
+
 .widget-buttons-grid>flowbox>flowboxchild>button:hover {
-  background: @noti-bg-hover;
 }
 
 /* Menubar widget */