v0.4.1:

Code refactoring
Updating checks functionality changes: avoid new version pop-ups for special builds (versions that have -DEV postfixes)

src/main/java/nsusbloader/Controllers/FrontController.java

@@ -0,0 +1,122 @@
+package nsusbloader.Controllers;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.fxml.Initializable;
+import javafx.scene.control.*;
+import javafx.scene.layout.Pane;
+import javafx.scene.layout.Region;
+import nsusbloader.AppPreferences;
+
+import java.net.URL;
+import java.util.ResourceBundle;
+
+public class FrontController implements Initializable {
+    @FXML
+    private Pane specialPane;
+
+    @FXML
+    private ChoiceBox<String> choiceProtocol, choiceNetUsb;
+    @FXML
+    private Label nsIpLbl;
+    @FXML
+    private TextField nsIpTextField;
+    @FXML
+    private Button switchThemeBtn;
+    @FXML
+    public NSTableViewController tableFilesListController;            // Accessible from Mediator
+
+    @Override
+    public void initialize(URL url, ResourceBundle resourceBundle) {
+        specialPane.getStyleClass().add("special-pane-as-border");  // UI hacks
+
+        ObservableList<String> choiceProtocolList = FXCollections.observableArrayList("TinFoil", "GoldLeaf");
+        choiceProtocol.setItems(choiceProtocolList);
+        choiceProtocol.getSelectionModel().select(AppPreferences.getInstance().getProtocol());
+        choiceProtocol.setOnAction(e-> {
+            tableFilesListController.setNewProtocol(choiceProtocol.getSelectionModel().getSelectedItem());
+            if (choiceProtocol.getSelectionModel().getSelectedItem().equals("GoldLeaf")) {
+                choiceNetUsb.setDisable(true);
+                choiceNetUsb.getSelectionModel().select("USB");
+                nsIpLbl.setVisible(false);
+                nsIpTextField.setVisible(false);
+            }
+            else {
+                choiceNetUsb.setDisable(false);
+                if (choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")) {
+                    nsIpLbl.setVisible(true);
+                    nsIpTextField.setVisible(true);
+                }
+            }
+        });  // Add listener to notify tableView controller
+        tableFilesListController.setNewProtocol(choiceProtocol.getSelectionModel().getSelectedItem());   // Notify tableView controller
+
+        ObservableList<String> choiceNetUsbList = FXCollections.observableArrayList("USB", "NET");
+        choiceNetUsb.setItems(choiceNetUsbList);
+        choiceNetUsb.getSelectionModel().select(AppPreferences.getInstance().getNetUsb());
+        if (choiceProtocol.getSelectionModel().getSelectedItem().equals("GoldLeaf")) {
+            choiceNetUsb.setDisable(true);
+            choiceNetUsb.getSelectionModel().select("USB");
+        }
+        choiceNetUsb.setOnAction(e->{
+            if (choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")){
+                nsIpLbl.setVisible(true);
+                nsIpTextField.setVisible(true);
+            }
+            else{
+                nsIpLbl.setVisible(false);
+                nsIpTextField.setVisible(false);
+            }
+        });
+        // Set and configure NS IP field behavior
+        nsIpTextField.setText(AppPreferences.getInstance().getNsIp());
+        if (choiceProtocol.getSelectionModel().getSelectedItem().equals("TinFoil") && choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")){
+            nsIpLbl.setVisible(true);
+            nsIpTextField.setVisible(true);
+        }
+        nsIpTextField.setTextFormatter(new TextFormatter<>(change -> {
+            if (change.getControlNewText().contains(" ") | change.getControlNewText().contains("\t"))
+                return null;
+            else
+                return change;
+        }));
+        // Set and configure switch theme button
+        Region btnSwitchImage = new Region();
+        btnSwitchImage.getStyleClass().add("regionLamp");
+        switchThemeBtn.setGraphic(btnSwitchImage);
+        this.switchThemeBtn.setOnAction(e->switchTheme());
+    }
+    /**
+     * Changes UI theme on the go
+     * */
+    private void switchTheme(){
+        if (switchThemeBtn.getScene().getStylesheets().get(0).equals("/res/app_dark.css")) {
+            switchThemeBtn.getScene().getStylesheets().remove("/res/app_dark.css");
+            switchThemeBtn.getScene().getStylesheets().add("/res/app_light.css");
+        }
+        else {
+            switchThemeBtn.getScene().getStylesheets().remove("/res/app_light.css");
+            switchThemeBtn.getScene().getStylesheets().add("/res/app_dark.css");
+        }
+        AppPreferences.getInstance().setTheme(switchThemeBtn.getScene().getStylesheets().get(0));
+    }
+    /**
+     * Get selected protocol (GL/TF)
+     * */
+    String getSelectedProtocol(){
+        return choiceProtocol.getSelectionModel().getSelectedItem();
+    }
+    /**
+     * Get selected protocol (USB/NET)
+     * */
+    String getSelectedNetUsb(){
+        return choiceNetUsb.getSelectionModel().getSelectedItem();
+    }
+    /**
+     * Get NS IP address
+     * */
+    String getNsIp(){
+        return nsIpTextField.getText();
+    }
+}

src/main/java/nsusbloader/Controllers/NSLMainController.java

@@ -1,15 +1,12 @@
 package nsusbloader.Controllers;
 
 import javafx.application.HostServices;
-import javafx.collections.FXCollections;
-import javafx.collections.ObservableList;
 import javafx.concurrent.Task;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.control.*;
 import javafx.scene.input.DragEvent;
 import javafx.scene.input.TransferMode;
-import javafx.scene.layout.Pane;
 import javafx.scene.layout.Region;
 import javafx.stage.FileChooser;
 import nsusbloader.*;
@@ -36,22 +33,11 @@ public class NSLMainController implements Initializable {
     private Region btnUpStopImage;
     @FXML
     public ProgressBar progressBar;            // Accessible from Mediator
-    @FXML
-    private ChoiceBox<String> choiceProtocol, choiceNetUsb;
-    @FXML
-    private Button switchThemeBtn;
 
-    @FXML
-    private Pane specialPane;
-
-    @FXML
-    public NSTableViewController tableFilesListController;            // Accessible from Mediator
     @FXML
     private SettingsController SettingsTabController;
     @FXML
-    private TextField nsIpTextField;
+    public FrontController FrontTabController;             // Accessible from Mediator | todo: incapsulate
-    @FXML
-    private Label nsIpLbl;
 
     private Task<Void> usbNetCommunications;
     private Thread workThread;
@@ -70,8 +56,6 @@ public class NSLMainController implements Initializable {
 
         MediatorControl.getInstance().setController(this);
 
-        specialPane.getStyleClass().add("special-pane-as-border");  // UI hacks
-
         uploadStopBtn.setDisable(true);
         selectNspBtn.setOnAction(e->{ selectFilesBtnAction(); });
         uploadStopBtn.setOnAction(e->{ uploadBtnAction(); });
@@ -80,67 +64,11 @@ public class NSLMainController implements Initializable {
 
         this.btnUpStopImage = new Region();
         btnUpStopImage.getStyleClass().add("regionUpload");
-        //uploadStopBtn.getStyleClass().remove("button");
+        
         uploadStopBtn.getStyleClass().add("buttonUp");
         uploadStopBtn.setGraphic(btnUpStopImage);
 
-        ObservableList<String> choiceProtocolList = FXCollections.observableArrayList("TinFoil", "GoldLeaf");
+        this.previouslyOpenedPath = AppPreferences.getInstance().getRecent();
-        choiceProtocol.setItems(choiceProtocolList);
-        choiceProtocol.getSelectionModel().select(AppPreferences.getInstance().getProtocol());
-        choiceProtocol.setOnAction(e-> {
-            tableFilesListController.setNewProtocol(choiceProtocol.getSelectionModel().getSelectedItem());
-            if (choiceProtocol.getSelectionModel().getSelectedItem().equals("GoldLeaf")) {
-                choiceNetUsb.setDisable(true);
-                choiceNetUsb.getSelectionModel().select("USB");
-                nsIpLbl.setVisible(false);
-                nsIpTextField.setVisible(false);
-            }
-            else {
-                choiceNetUsb.setDisable(false);
-                if (choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")) {
-                    nsIpLbl.setVisible(true);
-                    nsIpTextField.setVisible(true);
-                }
-            }
-        });  // Add listener to notify tableView controller
-        tableFilesListController.setNewProtocol(choiceProtocol.getSelectionModel().getSelectedItem());   // Notify tableView controller
-
-        ObservableList<String> choiceNetUsbList = FXCollections.observableArrayList("USB", "NET");
-        choiceNetUsb.setItems(choiceNetUsbList);
-        choiceNetUsb.getSelectionModel().select(AppPreferences.getInstance().getNetUsb());
-        if (choiceProtocol.getSelectionModel().getSelectedItem().equals("GoldLeaf")) {
-            choiceNetUsb.setDisable(true);
-            choiceNetUsb.getSelectionModel().select("USB");
-        }
-        choiceNetUsb.setOnAction(e->{
-            if (choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")){
-                nsIpLbl.setVisible(true);
-                nsIpTextField.setVisible(true);
-            }
-            else{
-                nsIpLbl.setVisible(false);
-                nsIpTextField.setVisible(false);
-            }
-        });
-        nsIpTextField.setText(AppPreferences.getInstance().getNsIp());
-        if (choiceProtocol.getSelectionModel().getSelectedItem().equals("TinFoil") && choiceNetUsb.getSelectionModel().getSelectedItem().equals("NET")){
-            nsIpLbl.setVisible(true);
-            nsIpTextField.setVisible(true);
-        }
-        nsIpTextField.setTextFormatter(new TextFormatter<>(change -> {
-            if (change.getControlNewText().contains(" ") | change.getControlNewText().contains("\t"))
-                return null;
-            else
-                return change;
-        }));
-        this.previouslyOpenedPath = null;
-
-        Region btnSwitchImage = new Region();
-        btnSwitchImage.getStyleClass().add("regionLamp");
-        switchThemeBtn.setGraphic(btnSwitchImage);
-        this.switchThemeBtn.setOnAction(e->switchTheme());
-
-        previouslyOpenedPath = AppPreferences.getInstance().getRecent();
 
         if (AppPreferences.getInstance().getAutoCheckUpdates()){
             Task<List<String>> updTask = new UpdatesChecker();
@@ -164,20 +92,7 @@ public class NSLMainController implements Initializable {
      * Provide hostServices to Settings tab
      * */
     public void setHostServices(HostServices hs ){ SettingsTabController.registerHostServices(hs);}
-    /**
+
-     * Changes UI theme on the go
-     * */
-    private void switchTheme(){
-        if (switchThemeBtn.getScene().getStylesheets().get(0).equals("/res/app_dark.css")) {
-            switchThemeBtn.getScene().getStylesheets().remove("/res/app_dark.css");
-            switchThemeBtn.getScene().getStylesheets().add("/res/app_light.css");
-        }
-        else {
-            switchThemeBtn.getScene().getStylesheets().remove("/res/app_light.css");
-            switchThemeBtn.getScene().getStylesheets().add("/res/app_dark.css");
-        }
-        AppPreferences.getInstance().setTheme(switchThemeBtn.getScene().getStylesheets().get(0));
-    }
     /**
      * Functionality for selecting NSP button.
      * Uses setReady and setNotReady to simplify code readability.
@@ -189,15 +104,15 @@ public class NSLMainController implements Initializable {
 
         File validator = new File(previouslyOpenedPath);
         if (validator.exists())
-            fileChooser.setInitialDirectory(validator);         // TODO: read from prefs
+            fileChooser.setInitialDirectory(validator);
         else
-            fileChooser.setInitialDirectory(new File(System.getProperty("user.home")));         // TODO: read from prefs
+            fileChooser.setInitialDirectory(new File(System.getProperty("user.home")));
 
         fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("NSP ROM", "*.nsp"));
 
         filesList = fileChooser.showOpenMultipleDialog(logArea.getScene().getWindow());
         if (filesList != null && !filesList.isEmpty()) {
-            tableFilesListController.setFiles(filesList);
+            FrontTabController.tableFilesListController.setFiles(filesList);
             uploadStopBtn.setDisable(false);
             previouslyOpenedPath = filesList.get(0).getParent();
         }
@@ -209,7 +124,7 @@ public class NSLMainController implements Initializable {
         if ((workThread == null || !workThread.isAlive())){
             // Collect files
             List<File> nspToUpload;
-            if ((nspToUpload = tableFilesListController.getFilesForUpload()) == null) {
+            if ((nspToUpload = FrontTabController.tableFilesListController.getFilesForUpload()) == null) {
                 logArea.setText(resourceBundle.getString("logsNoFolderFileSelected"));
                 return;
             }
@@ -219,23 +134,23 @@ public class NSLMainController implements Initializable {
                     logArea.appendText("  "+item.getAbsolutePath()+"\n");
             }
             // If USB selected
-            if (choiceProtocol.getSelectionModel().getSelectedItem().equals("GoldLeaf") ||
+            if (FrontTabController.getSelectedProtocol().equals("GoldLeaf") ||
                     (
-                    choiceProtocol.getSelectionModel().getSelectedItem().equals("TinFoil")
+                    FrontTabController.getSelectedProtocol().equals("TinFoil")
-                    && choiceNetUsb.getSelectionModel().getSelectedItem().equals("USB")
+                    && FrontTabController.getSelectedNetUsb().equals("USB")
                     )
             ){
-                usbNetCommunications = new UsbCommunications(nspToUpload, choiceProtocol.getSelectionModel().getSelectedItem());
+                usbNetCommunications = new UsbCommunications(nspToUpload, FrontTabController.getSelectedProtocol());
                 workThread = new Thread(usbNetCommunications);
                 workThread.setDaemon(true);
                 workThread.start();
             }
             else {      // NET INSTALL OVER TINFOIL
-                if (SettingsTabController.isNsIpValidate() && !nsIpTextField.getText().matches("^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])$"))
+                if (SettingsTabController.isNsIpValidate() && ! FrontTabController.getNsIp().matches("^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])$"))
                     if (!ServiceWindow.getConfirmationWindow(resourceBundle.getString("windowTitleBadIp"),resourceBundle.getString("windowBodyBadIp")))
                         return;
 
-                String nsIP = nsIpTextField.getText();
+                String nsIP = FrontTabController.getNsIp();
 
                 if (!SettingsTabController.getExpertModeSelected())
                     usbNetCommunications = new NETCommunications(nspToUpload, nsIP, false, "", "", "");
@@ -261,7 +176,7 @@ public class NSLMainController implements Initializable {
      * */
     private void stopBtnAction(){
         if (workThread != null && workThread.isAlive()){
-            usbNetCommunications.cancel(false);            // TODO: add something abstract to use also for network
+            usbNetCommunications.cancel(false);
         }
     }
     /**
@@ -332,19 +247,19 @@ public class NSLMainController implements Initializable {
             se.printStackTrace();
         }
         if (!filesDropped.isEmpty())
-            tableFilesListController.setFiles(filesDropped);
+            FrontTabController.tableFilesListController.setFiles(filesDropped);
 
         event.setDropCompleted(true);
     }
     /**
      * Save preferences before exit
      * */
-    public void exit(){ // TODO: add method to set all in AppPreferences
+    public void exit(){
         AppPreferences.getInstance().setAll(
-                choiceProtocol.getSelectionModel().getSelectedItem(),
+                FrontTabController.getSelectedProtocol(),
                 previouslyOpenedPath,
-                choiceNetUsb.getSelectionModel().getSelectedItem(),
+                FrontTabController.getSelectedNetUsb(),
-                nsIpTextField.getText().trim(),
+                FrontTabController.getNsIp(),
                 SettingsTabController.isNsIpValidate(),
                 SettingsTabController.getExpertModeSelected(),
                 SettingsTabController.getAutoIpSelected(),

src/main/java/nsusbloader/ModelControllers/MessagesConsumer.java

@@ -33,7 +33,7 @@ public class MessagesConsumer extends AnimationTimer {
         this.progressBar = MediatorControl.getInstance().getContoller().progressBar;
 
         this.statusMap = statusMap;
-        this.tableViewController = MediatorControl.getInstance().getContoller().tableFilesListController;
+        this.tableViewController = MediatorControl.getInstance().getContoller().FrontTabController.tableFilesListController;
 
         progressBar.setProgress(0.0);
 

src/main/java/nsusbloader/ModelControllers/UpdatesChecker.java

@@ -50,8 +50,14 @@ public class UpdatesChecker extends Task<List<String>> {
             return null;
         }
 
+        String currentVersion;
+        if (NSLMain.appVersion.matches("^v(([0-9])+?\\.)+[0-9]+(-.+)$"))        // if current version have postfix like v0.1-Experimental
+            currentVersion = NSLMain.appVersion.replaceAll("(-.*$)", "");       // cut postfix
+        else
+            currentVersion = NSLMain.appVersion;
+
         List<String> returningValue = new ArrayList<>();
-        if (!newVersion.equals(NSLMain.appVersion)) {                     //  if latest noted version in GitHub is different to this version
+        if (!newVersion.equals(currentVersion)) {                     //  if latest noted version in GitHub is different to this version
             returningValue.add(newVersion);
             returningValue.add(changeLog);
             return returningValue;

src/main/java/nsusbloader/NSLMain.java

@@ -12,7 +12,7 @@ import java.util.Locale;
 import java.util.ResourceBundle;
 
 public class NSLMain extends Application {
-    public static final String appVersion = "v0.4";
+    public static final String appVersion = "v0.4.1";
     @Override
     public void start(Stage primaryStage) throws Exception{
 

src/main/java/nsusbloader/USB/UsbCommunications.java

@@ -456,7 +456,7 @@ public class UsbCommunications extends Task<Void> {
      * GoldLeaf processing
      * */
     private class GoldLeaf{
-        //                     CMD                                G     L     U     C     ID    0     0     0
+        //                     CMD                                G     L     U     C
         private final byte[] CMD_GLUC =               new byte[]{0x47, 0x4c, 0x55, 0x43};
         private final byte[] CMD_ConnectionRequest =  new byte[]{0x00, 0x00, 0x00, 0x00};    // Write-only command
         private final byte[] CMD_NSPName =            new byte[]{0x02, 0x00, 0x00, 0x00};    // Write-only command

src/main/resources/FrontTab.fxml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.ChoiceBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.control.ToolBar?>
+<?import javafx.scene.layout.AnchorPane?>
+<?import javafx.scene.layout.ColumnConstraints?>
+<?import javafx.scene.layout.GridPane?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.Pane?>
+<?import javafx.scene.layout.RowConstraints?>
+<?import javafx.scene.layout.VBox?>
+
+<AnchorPane xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1" fx:controller="nsusbloader.Controllers.FrontController">
+   <children>
+      <VBox layoutX="10.0" layoutY="10.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
+         <children>
+            <ToolBar>
+               <items>
+                  <ChoiceBox fx:id="choiceProtocol" prefWidth="120.0" />
+                  <ChoiceBox fx:id="choiceNetUsb" prefWidth="75.0" />
+                  <Label fx:id="nsIpLbl" text="%NSIPlable" visible="false" />
+                  <TextField fx:id="nsIpTextField" prefWidth="135.0" promptText="XXX.XXX.XXX.XXX" visible="false" />
+                  <Pane HBox.hgrow="ALWAYS" />
+                  <Button fx:id="switchThemeBtn" mnemonicParsing="false" />
+               </items>
+            </ToolBar>
+            <GridPane>
+               <columnConstraints>
+                  <ColumnConstraints hgrow="SOMETIMES" />
+                  <ColumnConstraints hgrow="SOMETIMES" percentWidth="90.0" />
+                  <ColumnConstraints hgrow="SOMETIMES" />
+               </columnConstraints>
+               <rowConstraints>
+                  <RowConstraints vgrow="SOMETIMES" />
+               </rowConstraints>
+               <children>
+                  <Pane fx:id="specialPane" GridPane.columnIndex="1" />
+               </children>
+               <VBox.margin>
+                  <Insets bottom="2.0" />
+               </VBox.margin>
+            </GridPane>
+            <fx:include fx:id="tableFilesList" source="TableView.fxml" />
+         </children>
+      </VBox>
+   </children>
+</AnchorPane>

src/main/resources/NSLMain.fxml

@@ -2,20 +2,13 @@
 
 <?import javafx.geometry.Insets?>
 <?import javafx.scene.control.Button?>
-<?import javafx.scene.control.ChoiceBox?>
-<?import javafx.scene.control.Label?>
 <?import javafx.scene.control.ProgressBar?>
 <?import javafx.scene.control.Tab?>
 <?import javafx.scene.control.TabPane?>
 <?import javafx.scene.control.TextArea?>
-<?import javafx.scene.control.TextField?>
-<?import javafx.scene.control.ToolBar?>
 <?import javafx.scene.layout.AnchorPane?>
-<?import javafx.scene.layout.ColumnConstraints?>
-<?import javafx.scene.layout.GridPane?>
 <?import javafx.scene.layout.HBox?>
 <?import javafx.scene.layout.Pane?>
-<?import javafx.scene.layout.RowConstraints?>
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.shape.SVGPath?>
 
@@ -27,37 +20,7 @@
               <tabs>
                 <Tab closable="false">
                      <content>
-                        <VBox prefHeight="200.0" prefWidth="100.0">
+                         <fx:include fx:id="FrontTab" source="FrontTab.fxml" VBox.vgrow="ALWAYS" />
-                           <children>
-                              <ToolBar>
-                                <items>
-                                    <ChoiceBox fx:id="choiceProtocol" prefWidth="120.0" />
-                                    <ChoiceBox fx:id="choiceNetUsb" prefWidth="75.0" />
-                                    <Label fx:id="nsIpLbl" text="%NSIPlable" visible="false" />
-                                    <TextField fx:id="nsIpTextField" prefWidth="135.0" promptText="XXX.XXX.XXX.XXX" visible="false" />
-                                    <Pane HBox.hgrow="ALWAYS" />
-                                    <Button fx:id="switchThemeBtn" mnemonicParsing="false" />
-                                </items>
-                              </ToolBar>
-                              <GridPane>
-                                <columnConstraints>
-                                  <ColumnConstraints hgrow="SOMETIMES" />
-                                    <ColumnConstraints hgrow="SOMETIMES" percentWidth="90.0" />
-                                  <ColumnConstraints hgrow="SOMETIMES" />
-                                </columnConstraints>
-                                <rowConstraints>
-                                  <RowConstraints vgrow="SOMETIMES" />
-                                </rowConstraints>
-                                 <children>
-                                    <Pane fx:id="specialPane" GridPane.columnIndex="1" />
-                                 </children>
-                                 <VBox.margin>
-                                    <Insets bottom="2.0" />
-                                 </VBox.margin>
-                              </GridPane>
-                               <fx:include fx:id="tableFilesList" source="TableView.fxml" VBox.vgrow="ALWAYS" />
-                           </children>
-                        </VBox>
                      </content>
                      <graphic>
                         <SVGPath content="M21,19V17H8V19H21M21,13V11H8V13H21M8,7H21V5H8V7M4,5V7H6V5H4M3,5A1,1 0 0,1 4,4H6A1,1 0 0,1 7,5V7A1,1 0 0,1 6,8H4A1,1 0 0,1 3,7V5M4,11V13H6V11H4M3,11A1,1 0 0,1 4,10H6A1,1 0 0,1 7,11V13A1,1 0 0,1 6,14H4A1,1 0 0,1 3,13V11M4,17V19H6V17H4M3,17A1,1 0 0,1 4,16H6A1,1 0 0,1 7,17V19A1,1 0 0,1 6,20H4A1,1 0 0,1 3,19V17Z" />