Enable communication between Applets

--applets can now use the LatteBridge in order
to send/receive messages between them. A good
example of this could be the window title and
the window appmenu applets in order the hide
and show themselves based on mouse hovering.

containment/package/contents/ui/applet/communicator/Actions.qml

@@ -20,6 +20,43 @@
 import QtQuick 2.7
 
 Item{
+    // NAME: latteSideColoringEnabled
+    // TYPE: bool
+    //   USAGE: writable through actions.setProperty
+    //   EXPLANATION: when is FALSE, Latte is not painting/colorizing this applet
+    //       in any case. In such case the applet can use 'palette'
+    //       in order to access the color palette used at all cases from Latte
+    //   USE CASE: when Latte is transparent and applets colors need to be adjusted in order
+    //       to look consistent with the underlying desktop background OR the applet
+    //       is not using monochromatic icons but rather colorful ones.
+    // @since: 0.9
+
+
+    // NAME: latteIconOverlayEnabled
+    // TYPE: bool
+    //   USAGE: writable through actions.setProperty
+    //   EXPLANATION: when is FALSE, Latte is not overlaying any icons above
+    //       the applet or alters the applet visual in any sense.
+    //       That means that the applet is responsible to provide a coherent
+    //       parabolic effect experience.
+    // @since: 0.9
+
+    // NAME: activeIndicatorEnabled
+    // TYPE: bool
+    //   USAGE: writable through actions.setProperty
+    //   EXPLANATION: when is TRUE, Latte can show its own Active Indicator
+    //       when needed. For FALSE, the Latte Active Indicator is not drawn
+    //       or used for that applet.
+    // @since: 0.9
+
+    // NAME: parabolicEffectEnabled
+    // TYPE: bool
+    //   USAGE: writable through actions.setProperty
+    //   EXPLANATION: when is TRUE, Latte can use Parabolic Effect in order
+    //       to draw that applet. For FALSE, this applet is considered locked
+    //       and can not be zoomed.
+    // @since: 0.9
+
     function setProperty(appletId, parameter, value) {
         if (parameter === "latteSideColoringEnabled") {
             mainCommunicator.latteSideColoringEnabled = value;
@@ -46,4 +83,12 @@ Item{
         return null;
     }
 
+
+    //!   USAGE: send message to <pluginName>, for <action> command and set its property to <value>
+    //!   EXPLANATION: applets can send messages/commands to other applets
+    //!       in order to communicate with each other
+    function broadcastToApplet(pluginName, action, value) {
+        root.broadcastedToApplet(pluginName, action, value);
+    }
+
 }

containment/package/contents/ui/applet/communicator/LatteBridge.qml

@@ -22,6 +22,16 @@ import QtQuick 2.7
 Item{
     id: settings
 
+    //! EXPOSED SIGNALS
+
+    //!   USAGE: signals from other applets, <command>, <value>
+    //!   EXPLANATION: applets can receive signals from other applets
+    //!       to catch signals from other applets in order to communicate with
+    //!       each other
+    signal broadcasted(string action, variant value);
+
+    //! EXPOSED PROPERTIES
+
     // NAME: version
     //   USAGE: read-only
     //   EXPLANATION: Latte communication version in order for the applet to use only properties
@@ -64,46 +74,16 @@ Item{
 
     property Item actions: Actions{}
 
-
-    // NAME: latteSideColoringEnabled
-    // TYPE: bool
-    //   USAGE: writable through actions.setProperty
-    //   EXPLANATION: when is FALSE, Latte is not painting/colorizing this applet
-    //       in any case. In such case the applet can use 'palette'
-    //       in order to access the color palette used at all cases from Latte
-    //   USE CASE: when Latte is transparent and applets colors need to be adjusted in order
-    //       to look consistent with the underlying desktop background OR the applet
-    //       is not using monochromatic icons but rather colorful ones.
-    // @since: 0.9
-
-
-    // NAME: latteIconOverlayEnabled
-    // TYPE: bool
-    //   USAGE: writable through actions.setProperty
-    //   EXPLANATION: when is FALSE, Latte is not overlaying any icons above
-    //       the applet or alters the applet visual in any sense.
-    //       That means that the applet is responsible to provide a coherent
-    //       parabolic effect experience.
-    // @since: 0.9
-
-    // NAME: activeIndicatorEnabled
-    // TYPE: bool
-    //   USAGE: writable through actions.setProperty
-    //   EXPLANATION: when is TRUE, Latte can show its own Active Indicator
-    //       when needed. For FALSE, the Latte Active Indicator is not drawn
-    //       or used for that applet.
-    // @since: 0.9
-
-    // NAME: parabolicEffectEnabled
-    // TYPE: bool
-    //   USAGE: writable through actions.setProperty
-    //   EXPLANATION: when is TRUE, Latte can use Parabolic Effect in order
-    //       to draw that applet. For FALSE, this applet is considered locked
-    //       and can not be zoomed.
-    // @since: 0.9
+    Connections {
+        target: root
+        onBroadcastedToApplet: {
+            if (appletItem.applet && appletItem.applet.pluginName === pluginName) {
+                settings.broadcasted(action, value);
+            }
+        }
+    }
 
     //! Initialize
-
     Component.onCompleted: {
         appletRootItem.latteBridge = settings;
     }

containment/package/contents/ui/main.qml

@@ -51,6 +51,8 @@ DragDrop.DropArea {
     signal updateEffectsArea();
     signal updateIndexes();
     signal updateScale(int delegateIndex, real newScale, real step);
+
+    signal broadcastedToApplet(string pluginName, string action, variant value);
     //// END SIGNALS
 
     ////BEGIN properties