Properly restore maximized window from taskbar if required

electron/createTray.js

@@ -6,6 +6,26 @@ let tray;
 export default window => {
   let iconPath;
 
+  /*
+   * A maximized window can't be properly
+   * restored when minimized to the taskbar
+   * (it will be restored/showed as unmaximized).
+   * 
+   * window.isMaximized() will also return 
+   * false when minimizing a maximized window.
+   * 
+   * The safest way to keep track of the 
+   * maximized state using maximize and 
+   * unmaximize events.
+   */
+  let isWindowMaximized = false;
+  window.on('maximize', () => {
+    isWindowMaximized = true;
+  });
+  window.on('unmaximize', () => {
+    isWindowMaximized = false;
+  });
+
   switch (process.platform) {
     case 'darwin': {
       iconPath = 'static/img/tray/mac/trayTemplate.png';
@@ -22,18 +42,21 @@ export default window => {
 
   tray = new Tray(process.env.NODE_ENV === 'development' ? iconPath : path.join(process.resourcesPath, iconPath));
 
-  tray.on('double-click', () => {
+  const restoreFromTray = () => {
+    if (isWindowMaximized) {
+      window.maximize();
+    }
     window.show();
-  });
+  };
+
+  tray.on('double-click', restoreFromTray);
 
   tray.setToolTip('LBRY App');
 
   const template = [
     {
       label: `Open ${app.name}`,
-      click: () => {
-        window.show();
-      },
+      click: restoreFromTray,
     },
     { role: 'quit' },
   ];