From e5d2d9d44ac87c12245b211abecad541c22cdd50 Mon Sep 17 00:00:00 2001
From: Rory Grandin <roryg@j5int.com>
Date: Thu, 21 Nov 2019 11:46:06 +0200
Subject: [PATCH] Port fix from upstream/master from pull request
 (https://github.com/apache/cordova-plugin-inappbrowser/pull/534) to fix the
 window not opening on iOS 13.

---
 src/ios/CDVInAppBrowser.h |  1 +
 src/ios/CDVInAppBrowser.m | 32 ++++++++++++++++++++++----------
 2 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/src/ios/CDVInAppBrowser.h b/src/ios/CDVInAppBrowser.h
index 25fae3f3e..6636f3607 100644
--- a/src/ios/CDVInAppBrowser.h
+++ b/src/ios/CDVInAppBrowser.h
@@ -30,6 +30,7 @@
 @class CDVInAppBrowserViewController;
 
 @interface CDVInAppBrowser : CDVPlugin {
+    UIWindow * tmpWindow;
 }
 
 @property (nonatomic, retain) CDVInAppBrowserViewController* inAppBrowserViewController;
diff --git a/src/ios/CDVInAppBrowser.m b/src/ios/CDVInAppBrowser.m
index 78e2186ed..3f526bb2d 100644
--- a/src/ios/CDVInAppBrowser.m
+++ b/src/ios/CDVInAppBrowser.m
@@ -239,13 +239,18 @@ - (void)show:(CDVInvokedUrlCommand*)command
     // Run later to avoid the "took a long time" log message.
     dispatch_async(dispatch_get_main_queue(), ^{
         if (weakSelf.inAppBrowserViewController != nil) {
-            CGRect frame = [[UIScreen mainScreen] bounds];
-            UIWindow *tmpWindow = [[UIWindow alloc] initWithFrame:frame];
+            float osVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
+            __strong __typeof(weakSelf) strongSelf = weakSelf;
+            if (!strongSelf->tmpWindow) {
+                CGRect frame = [[UIScreen mainScreen] bounds];
+                strongSelf->tmpWindow = [[UIWindow alloc] initWithFrame:frame];
+            }
             UIViewController *tmpController = [[UIViewController alloc] init];
-            [tmpWindow setRootViewController:tmpController];
-            [tmpWindow setWindowLevel:UIWindowLevelNormal];
 
-            [tmpWindow makeKeyAndVisible];
+            [strongSelf->tmpWindow setRootViewController:tmpController];
+            [strongSelf->tmpWindow setWindowLevel:UIWindowLevelNormal];
+
+            [self->tmpWindow makeKeyAndVisible];
             [tmpController presentViewController:nav animated:YES completion:nil];
         }
     });
@@ -253,6 +258,10 @@ - (void)show:(CDVInvokedUrlCommand*)command
 
 - (void)hide:(CDVInvokedUrlCommand*)command
 {
+    // Set tmpWindow to hidden to make main webview responsive to touch again
+    // https://stackoverflow.com/questions/4544489/how-to-remove-a-uiwindow
+    self->tmpWindow.hidden = YES;
+
     if (self.inAppBrowserViewController == nil) {
         NSLog(@"Tried to hide IAB after it was closed.");
         return;
@@ -438,9 +447,9 @@ - (BOOL)webView:(UIWebView*)theWebView shouldStartLoadWithRequest:(NSURLRequest*
         NSString* eventName = [url host];
         NSString* eventData = [url path];
         CDVPluginResult* pluginResult = nil;
-        
+
         NSLog(@"Event emitted - EventName: %@, EventData: %@", eventName, eventData);
-        
+
         if ((eventData != nil) && ([eventData length] > 1)) {
             eventData = [eventData substringFromIndex:1];
             pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
@@ -448,13 +457,13 @@ - (BOOL)webView:(UIWebView*)theWebView shouldStartLoadWithRequest:(NSURLRequest*
         } else {
             pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                          messageAsDictionary:@{@"type":@"eventemitted", @"event_name":eventName, @"event_data":@""}];
-            
+
         }
-        
+
         [pluginResult setKeepCallback:[NSNumber numberWithBool:YES]];
         [self.commandDelegate sendPluginResult:pluginResult callbackId:self.callbackId];
         return NO;
-        
+
     }
     //if is an app store link, let the system handle it, otherwise it fails to load it
     else if ([[ url scheme] isEqualToString:@"itms-appss"] || [[ url scheme] isEqualToString:@"itms-apps"]) {
@@ -516,6 +525,9 @@ - (void)browserExit
     // Don't recycle the ViewController since it may be consuming a lot of memory.
     // Also - this is required for the PDF/User-Agent bug work-around.
     self.inAppBrowserViewController = nil;
+    // Set tmpWindow to hidden to make main webview responsive to touch again
+    // Based on https://stackoverflow.com/questions/4544489/how-to-remove-a-uiwindow
+    self->tmpWindow.hidden = YES;
 
     if (IsAtLeastiOSVersion(@"7.0")) {
         if (_previousStatusBarStyle != -1) {