Support keeping system awake while downloading anything

forge-gui-android/src/forge/app/Main.java

@@ -17,6 +17,7 @@ import android.net.NetworkInfo;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
+import android.view.WindowManager;
 import android.webkit.MimeTypeMap;
 
 import com.badlogic.gdx.Gdx;
@@ -210,5 +211,15 @@ public class Main extends AndroidApplication {
                 FileUtil.deleteFile(switchOrientationFile);
             }
         }
+
+        @Override
+        public void preventSystemSleep(boolean preventSleep) {
+            if (preventSleep) {
+                getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+            }
+            else {
+                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+            }
+        }
     }
 }

forge-gui-desktop/src/main/java/forge/GuiDesktop.java

@@ -283,4 +283,9 @@ public class GuiDesktop implements IGuiBase {
     public String encodeSymbols(String str, boolean formatReminderText) {
         return FSkin.encodeSymbols(str, formatReminderText);
     }
+
+    @Override
+    public void preventSystemSleep(boolean preventSleep) {
+        
+    }
 }

forge-gui-ios/src/forge/ios/Main.java

@@ -75,6 +75,11 @@ public class Main extends IOSApplication.Delegate {
             // TODO implement this
         }
 
+        @Override
+        public void preventSystemSleep(boolean preventSleep) {
+            // TODO implement this
+        }
+
         @Override
         public boolean isTablet() {
             return Gdx.graphics.getWidth() > Gdx.graphics.getHeight();

forge-gui-mobile-dev/src/forge/app/Main.java

@@ -93,5 +93,11 @@ public class Main {
                 FileUtil.deleteFile(switchOrientationFile);
             }
         }
+
+        @Override
+        public void preventSystemSleep(boolean preventSleep) {
+            int k = 1;
+            k++;
+        }
     }
 }

forge-gui-mobile/src/forge/GuiMobile.java

@@ -290,4 +290,9 @@ public class GuiMobile implements IGuiBase {
     public String encodeSymbols(String str, boolean formatReminderText) {
         return str; //not needed for mobile
     }
+
+    @Override
+    public void preventSystemSleep(boolean preventSleep) {
+        Forge.getDeviceAdapter().preventSystemSleep(preventSleep);
+    }
 }

forge-gui/src/main/java/forge/download/GuiDownloadService.java

@@ -227,6 +227,7 @@ public abstract class GuiDownloadService implements Runnable {
 
     @Override
     public void run() {
+        GuiBase.getInterface().preventSystemSleep(true); //prevent system from going into sleep mode while downloading
 
         Proxy p = getProxy();
 
@@ -294,8 +295,9 @@ public abstract class GuiDownloadService implements Runnable {
             }
 
             update(++iCard, fileDest);
-
         }
+
+        GuiBase.getInterface().preventSystemSleep(false);
     }
 
     protected Proxy getProxy() {

forge-gui/src/main/java/forge/download/GuiDownloadZipService.java

@@ -19,6 +19,7 @@ import com.esotericsoftware.minlog.Log;
 import com.google.common.io.Files;
 
 import forge.FThreads;
+import forge.GuiBase;
 import forge.interfaces.IProgressBar;
 import forge.util.FileUtil;
 
@@ -73,6 +74,8 @@ public class GuiDownloadZipService extends GuiDownloadService {
 
         //if assets.zip downloaded successfully, unzip into destination folder
         try {
+            GuiBase.getInterface().preventSystemSleep(true); //prevent system from going into sleep mode while unzipping
+
             if (deleteFolder != null) {
                 final File deleteDir = new File(deleteFolder);
                 if (deleteDir.exists()) {
@@ -132,9 +135,14 @@ public class GuiDownloadZipService extends GuiDownloadService {
         catch (final Exception e) {
             e.printStackTrace();
         }
+        finally {
+            GuiBase.getInterface().preventSystemSleep(false);
+        }
     }
 
     public String download(final String filename) {
+        GuiBase.getInterface().preventSystemSleep(true); //prevent system from going into sleep mode while downloading
+
         progressBar.reset();
         progressBar.setPercentMode(true);
         progressBar.setDescription("Downloading " + desc);
@@ -194,8 +202,11 @@ public class GuiDownloadZipService extends GuiDownloadService {
         }
         catch (final Exception ex) {
             Log.error("Downloading " + desc, "Error downloading " + desc, ex);
+            return null;
+        }
+        finally {
+            GuiBase.getInterface().preventSystemSleep(false);
         }
-        return null;
     }
 
     protected void copyInputStream(final InputStream in, final String outPath) throws IOException{

forge-gui/src/main/java/forge/interfaces/IDeviceAdapter.java

@@ -7,6 +7,7 @@ public interface IDeviceAdapter {
     String getDownloadsDir();
     boolean openFile(String filename);
     void setLandscapeMode(boolean landscapeMode);
+    void preventSystemSleep(boolean preventSleep);
     void restart();
     void exit();
 }

forge-gui/src/main/java/forge/interfaces/IGuiBase.java

@@ -53,4 +53,5 @@ public interface IGuiBase {
     HostedMatch hostMatch();
     void runBackgroundTask(String message, Runnable task);
     String encodeSymbols(String str, boolean formatReminderText);
+    void preventSystemSleep(boolean preventSleep);
 }