From ef186195ccfb99210eaec3fccfbc6425386e9301 Mon Sep 17 00:00:00 2001
From: Denis Fokin <denis.fokin@jetbrains.com>
Date: Tue, 23 Jul 2019 13:09:42 +0300
Subject: [PATCH] IDEA-218792 Skip minimised and fullscreen windows in Activate
 Next Window action

GitOrigin-RevId: a3f6963bdefbb9b0aef698617f3177a308c8eec5
---
 .../src/com/intellij/ide/IdeEventQueue.java           | 11 +++++++++--
 platform/util/ui/src/com/intellij/util/ui/UIUtil.java |  6 ++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java b/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
index 52447e44c5c7..de7d428da6f9 100644
--- a/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
+++ b/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
@@ -31,6 +31,7 @@ import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.wm.IdeFocusManager;
 import com.intellij.openapi.wm.IdeFrame;
 import com.intellij.openapi.wm.WindowManager;
+import com.intellij.openapi.wm.ex.IdeFrameEx;
 import com.intellij.openapi.wm.ex.WindowManagerEx;
 import com.intellij.openapi.wm.impl.FocusManagerImpl;
 import com.intellij.ui.ComponentUtil;
@@ -81,11 +82,17 @@ public final class IdeEventQueue extends EventQueue {
   private static void updateActivatedWindowSet() {
     for (Iterator<Window> iter = activatedWindows.iterator(); iter.hasNext(); ) {
       Window window = iter.next();
-      if (!window.isVisible()) {
+      if (!window.isVisible() || UIUtil.isMinimized(window) || isInFullscreen(window)) {
         iter.remove();
       }
     }
-    assert !activatedWindows.isEmpty();
+    // The list can be empty if all windows are in fullscreen or minimized state
+  }
+
+  private static boolean isInFullscreen (Window window) {
+    if (!(window instanceof IdeFrameEx)) return false;
+    IdeFrameEx ideFrameEx = (IdeFrameEx) window;
+    return ideFrameEx.isInFullScreen();
   }
 
   public Window nextWindowAfter (@NotNull Window w) {
diff --git a/platform/util/ui/src/com/intellij/util/ui/UIUtil.java b/platform/util/ui/src/com/intellij/util/ui/UIUtil.java
index 705239967e0c..8cd8623d5db7 100644
--- a/platform/util/ui/src/com/intellij/util/ui/UIUtil.java
+++ b/platform/util/ui/src/com/intellij/util/ui/UIUtil.java
@@ -252,6 +252,12 @@ public final class UIUtil extends StartupUiUtil {
     return GrayFilter.namedFilter("text.grayFilter", new GrayFilter(20, 0, 100));
   }
 
+  public static boolean isMinimized(Window window) {
+    if (!(window instanceof Frame)) return false;
+    Frame frame = (Frame)window;
+    return frame.getExtendedState() == Frame.ICONIFIED;
+  }
+
   @ApiStatus.Experimental
   public static class GrayFilter extends RGBImageFilter {
     private float brightness;