Reword the skin save dialog as an actual saving dialogue

src/hdskins/java/com/voxelmodpack/hdskins/SkinChooser.java

@@ -1,8 +1,8 @@
 package com.voxelmodpack.hdskins;
 
 import com.voxelmodpack.hdskins.skins.MoreHttpResponses;
-import com.voxelmodpack.hdskins.upload.awt.ThreadOpenFile;
-import com.voxelmodpack.hdskins.upload.awt.ThreadOpenFileFolder;
+import com.voxelmodpack.hdskins.upload.awt.IFileDialog;
+import com.voxelmodpack.hdskins.upload.awt.ThreadSaveFilePNG;
 import com.voxelmodpack.hdskins.upload.awt.ThreadOpenFilePNG;
 import net.minecraft.client.Minecraft;
 import org.apache.commons.io.FileUtils;
@@ -39,7 +39,7 @@ public class SkinChooser {
         return number != 0 && (number & number - 1) == 0;
     }
 
-    private ThreadOpenFile openFileThread;
+    private IFileDialog openFileThread;
 
     private final SkinUploader uploader;
 
@@ -60,29 +60,27 @@ public class SkinChooser {
     }
 
     public void openBrowsePNG(Minecraft mc, String title) {
-        openFileThread = new ThreadOpenFilePNG(mc, title, (fileDialog, dialogResult) -> {
+        openFileThread = new ThreadOpenFilePNG(mc, title, (file, dialogResult) -> {
             openFileThread = null;
             if (dialogResult == 0) {
-                selectFile(fileDialog.getSelectedFile());
+                selectFile(file);
             }
         });
         openFileThread.start();
     }
 
     public void openSavePNG(Minecraft mc, String title) {
-        openFileThread = new ThreadOpenFileFolder(mc, title, (fileDialog, dialogResult) -> {
+        openFileThread = new ThreadSaveFilePNG(mc, title, mc.getSession().getUsername() + ".png", (file, dialogResult) -> {
             if (dialogResult == 0) {
-                File out = fileDialog.getSelectedFile();
                 try (MoreHttpResponses response = uploader.downloadSkin().get()) {
                     if (response.ok()) {
-                        FileUtils.copyInputStreamToFile(response.getInputStream(), out);
+                        FileUtils.copyInputStreamToFile(response.getInputStream(), file);
                     }
                 } catch (IOException | InterruptedException | ExecutionException e) {
                     e.printStackTrace();
                 }
             }
             openFileThread = null;
-
         });
         openFileThread.start();
     }

src/hdskins/java/com/voxelmodpack/hdskins/gui/GuiSkins.java

@@ -129,7 +129,7 @@ public class GuiSkins extends GameGui implements ISkinUploadHandler {
 
         addButton(btnDownload = new Button(width / 2 - 24, height / 2 + 20, 48, 20, "hdskins.options.download", sender -> {
             if (uploader.canClear()) {
-                chooser.openSavePNG(mc, format("hdskins.open.title"));
+                chooser.openSavePNG(mc, format("hdskins.save.title"));
             }
         })).setEnabled(uploader.canClear()).setTooltip("hdskins.options.download.title");
 

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/IFileCallback.java

@@ -0,0 +1,7 @@
+package com.voxelmodpack.hdskins.upload.awt;
+
+import java.io.File;
+
+public interface IFileCallback {
+    void onDialogClosed(File file, int dialogResults);
+}

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/IFileDialog.java

@@ -0,0 +1,5 @@
+package com.voxelmodpack.hdskins.upload.awt;
+
+public interface IFileDialog extends Runnable {
+    void start();
+}

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/IOpenFileCallback.java

@@ -1,18 +0,0 @@
-package com.voxelmodpack.hdskins.upload.awt;
-
-import javax.swing.JFileChooser;
-
-/**
- * Interface for objects which can receive a callback from ThreadOpenFile
- *
- * @author Adam Mummery-Smith
- */
-@FunctionalInterface
-public interface IOpenFileCallback {
-
-    /**
-     * Callback method called when the "open file" dialog is closed
-     */
-    void onFileOpenDialogClosed(JFileChooser fileDialog, int dialogResult);
-
-}

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/ThreadOpenFile.java

@@ -15,16 +15,16 @@ import com.voxelmodpack.hdskins.LiteModHDSkins;
  *
  * @author Adam Mummery-Smith
  */
-public abstract class ThreadOpenFile extends Thread {
+public abstract class ThreadOpenFile extends Thread implements IFileDialog {
 
     protected String dialogTitle;
 
     /**
      * Delegate to call back when the dialog box is closed
      */
-    protected final IOpenFileCallback parentScreen;
+    protected final IFileCallback parentScreen;
 
-    protected ThreadOpenFile(Minecraft minecraft, String dialogTitle, IOpenFileCallback callback) throws IllegalStateException {
+    protected ThreadOpenFile(Minecraft minecraft, String dialogTitle, IFileCallback callback) throws IllegalStateException {
         if (minecraft.isFullScreen()) {
             throw new IllegalStateException("Cannot open an awt window whilst minecraft is in full screen mode!");
         }
@@ -44,20 +44,32 @@ public abstract class ThreadOpenFile extends Thread {
         }
         fileDialog.setFileFilter(getFileFilter());
 
-        int dialogResult = fileDialog.showOpenDialog(InternalDialog.getAWTContext());
+        int dialogResult = showDialog(fileDialog);
 
         File f = fileDialog.getSelectedFile();
 
         if (f != null) {
             LiteModHDSkins.instance().lastChosenFile = f.getAbsolutePath();
             LiteModHDSkins.instance().writeConfig();
+
+            if (!f.exists() && f.getName().indexOf('.') == -1) {
+                f = appendMissingExtension(f);
+            }
         }
 
-        parentScreen.onFileOpenDialogClosed(fileDialog, dialogResult);
+        parentScreen.onDialogClosed(f, dialogResult);
+    }
+
+    protected int showDialog(JFileChooser chooser) {
+        return chooser.showOpenDialog(InternalDialog.getAWTContext());
     }
 
     /**
      * Subclasses should override this to return a file filter
      */
     protected abstract FileFilter getFileFilter();
+
+    protected File appendMissingExtension(File file) {
+        return file;
+    }
 }

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/ThreadOpenFileFolder.java

@@ -1,32 +0,0 @@
-package com.voxelmodpack.hdskins.upload.awt;
-
-import net.minecraft.client.Minecraft;
-
-import javax.swing.filechooser.FileFilter;
-import java.io.File;
-
-/**
- * Opens an awt "Open File" dialog that only accepts directories.
- */
-public class ThreadOpenFileFolder extends ThreadOpenFile {
-
-    public ThreadOpenFileFolder(Minecraft minecraft, String dialogTitle, IOpenFileCallback callback)
-            throws IllegalStateException {
-        super(minecraft, dialogTitle, callback);
-    }
-
-    @Override
-    protected FileFilter getFileFilter() {
-        return new FileFilter() {
-            @Override
-            public String getDescription() {
-                return "Directories";
-            }
-
-            @Override
-            public boolean accept(File f) {
-                return f.isDirectory();
-            }
-        };
-    }
-}

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/ThreadOpenFilePNG.java

@@ -12,8 +12,7 @@ import java.io.File;
  */
 public class ThreadOpenFilePNG extends ThreadOpenFile {
 
-    public ThreadOpenFilePNG(Minecraft minecraft, String dialogTitle, IOpenFileCallback callback)
-            throws IllegalStateException {
+    public ThreadOpenFilePNG(Minecraft minecraft, String dialogTitle, IFileCallback callback) throws IllegalStateException {
         super(minecraft, dialogTitle, callback);
     }
 

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/ThreadSaveFile.java

@@ -0,0 +1,47 @@
+package com.voxelmodpack.hdskins.upload.awt;
+
+import net.minecraft.client.Minecraft;
+
+import javax.swing.JFileChooser;
+import javax.swing.JOptionPane;
+
+import java.io.File;
+
+/**
+ * Opens an awt "Save File" dialog
+ */
+public abstract class ThreadSaveFile extends ThreadOpenFile {
+
+    protected String filename;
+
+    protected ThreadSaveFile(Minecraft minecraft, String dialogTitle, String initialFilename, IFileCallback callback) throws IllegalStateException {
+        super(minecraft, dialogTitle, callback);
+        this.filename = initialFilename;
+    }
+
+    @Override
+    protected int showDialog(JFileChooser chooser) {
+
+
+        do {
+            chooser.setSelectedFile(new File(filename));
+
+            int result = chooser.showSaveDialog(InternalDialog.getAWTContext());
+
+            File f = chooser.getSelectedFile();
+            if (result == 0 && f != null && f.exists()) {
+
+                if (JOptionPane.showConfirmDialog(chooser,
+                        "A file named \"" + f.getName() + "\" already exists. Do you want to replace it?", "Confirm",
+                        JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE) != JOptionPane.YES_OPTION) {
+                    continue;
+                }
+
+                f.delete();
+            }
+
+
+            return result;
+        } while (true);
+    }
+}

src/hdskins/java/com/voxelmodpack/hdskins/upload/awt/ThreadSaveFilePNG.java

@@ -0,0 +1,34 @@
+package com.voxelmodpack.hdskins.upload.awt;
+
+import net.minecraft.client.Minecraft;
+
+import javax.swing.filechooser.FileFilter;
+
+import java.io.File;
+
+public class ThreadSaveFilePNG extends ThreadSaveFile {
+
+    public ThreadSaveFilePNG(Minecraft minecraft, String dialogTitle, String filename, IFileCallback callback) {
+        super(minecraft, dialogTitle, filename, callback);
+    }
+
+    @Override
+    protected FileFilter getFileFilter() {
+        return new FileFilter() {
+            @Override
+            public String getDescription() {
+                return "PNG Files (*.png)";
+            }
+
+            @Override
+            public boolean accept(File f) {
+                return f.isDirectory() || f.getName().toLowerCase().endsWith(".png");
+            }
+        };
+    }
+
+    @Override
+    protected File appendMissingExtension(File file) {
+        return new File(file.getParentFile(), file.getName() + ".png");
+    }
+}

src/hdskins/resources/assets/hdskins/lang/en_us.lang

@@ -13,6 +13,7 @@ hdskins.error.noserver=There was no valid skin server available
 hdskins.error.offline=- Server Offline -
 
 hdskins.open.title=Choose skin
+hdskins.save.title=Choose save location
 hdskins.fetch=Fetching skin...
 hdskins.failed=Uploading skin failed
 hdskins.request=Sending request to server please wait...

src/main/java/com/minelittlepony/hdskins/gui/GuiSkinsMineLP.java

@@ -10,7 +10,6 @@ import com.mojang.authlib.minecraft.MinecraftProfileTexture.Type;
 import com.voxelmodpack.hdskins.gui.EntityPlayerModel;
 import com.voxelmodpack.hdskins.gui.GuiSkins;
 import com.voxelmodpack.hdskins.skins.SkinServer;
-import net.minecraft.client.audio.PositionedSoundRecord;
 import net.minecraft.init.Items;
 import net.minecraft.init.SoundEvents;
 import net.minecraft.item.ItemStack;