Allow install Theme from Preferences dialog

app/src/cc/arduino/view/preferences/Preferences.java

@@ -40,13 +40,17 @@
 import processing.app.Theme;
 import processing.app.Theme.ZippedTheme;
 import processing.app.helpers.FileUtils;
+import processing.app.javax.swing.filechooser.FileNameExtensionFilter;
 import processing.app.legacy.PApplet;
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.awt.event.ItemEvent;
 import java.awt.event.WindowEvent;
 import java.io.File;
+import java.io.IOException;
 import java.util.Collection;
 import java.util.LinkedList;
 
@@ -792,7 +796,10 @@ private void savePreferencesData() {
     if (comboTheme.getSelectedIndex() == 0) {
       PreferencesData.set("theme.file", "");
     } else {
-      PreferencesData.set("theme.file", ((ZippedTheme) comboTheme.getSelectedItem()).getKey());
+      Object selectedItem = comboTheme.getSelectedItem();
+      if(selectedItem instanceof ZippedTheme) {
+        PreferencesData.set("theme.file", ((ZippedTheme) selectedItem).getKey());
+      }
     }
 
     String newSizeText = fontSizeField.getText();
@@ -869,6 +876,22 @@ private void showPreferencesData() {
         comboTheme.setSelectedItem(theme);
       }
     }
+
+    // Allow install new themes.
+    String installItem = "-- " + tr( "Install from Zip" + " --");
+    comboTheme.addItem(installItem);
+
+    comboTheme.addActionListener(new ActionListener() {
+
+      @Override
+      public void actionPerformed(ActionEvent e) {
+        Object item = comboTheme.getSelectedItem();
+        if (item != null && item.toString().startsWith(installItem)) {
+          SwingUtilities.invokeLater(() -> comboTheme.getUI().setPopupVisible(comboTheme, false));
+          handleInstallTheme();
+        }
+      }
+    });
 
     Font editorFont = PreferencesData.getFont("editor.font");
     fontSizeField.setText(String.valueOf(editorFont.getSize()));
@@ -975,4 +998,40 @@ private void disableAllProxyFields() {
     autoProxyFieldsSetEnabled(false);
     manualProxyFieldsSetEnabled(false);
   }
+
+
+  public void handleInstallTheme() {
+
+    JFileChooser fileChooser = new JFileChooser(System.getProperty("user.home"));
+    fileChooser.setDialogTitle(tr("Select a zip file containing the theme you'd like to add"));
+    fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
+    fileChooser.setFileFilter(new FileNameExtensionFilter(tr("ZIP files"), "zip"));
+
+    Dimension preferredSize = fileChooser.getPreferredSize();
+    fileChooser.setPreferredSize(new Dimension(preferredSize.width + 200, preferredSize.height + 200));
+
+    int returnVal = fileChooser.showOpenDialog(this);
+
+    if (returnVal != JFileChooser.APPROVE_OPTION) {
+      return;
+    }
+
+    File sourceFile = fileChooser.getSelectedFile();
+
+    if (!sourceFile.isDirectory()) {
+      try {
+
+        ZippedTheme theme = Theme.install(sourceFile);
+
+        if(theme != null) {
+          comboTheme.addItem(theme);
+          comboTheme.setSelectedItem(theme);
+        }
+
+      } catch (IOException e) {
+        base.getActiveEditor().statusError(e);
+        return;
+      }
+    }
+  }
 }

app/src/processing/app/Theme.java

@@ -47,6 +47,8 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
@@ -66,6 +68,7 @@
 import org.apache.batik.transcoder.image.PNGTranscoder;
 import org.apache.commons.compress.utils.IOUtils;
 import org.apache.commons.lang3.StringUtils;
+
 import processing.app.helpers.OSUtils;
 import processing.app.helpers.PreferencesHelper;
 import processing.app.helpers.PreferencesMap;
@@ -724,4 +727,30 @@ static URL getUrl(ZipEntry entry) {
       return null;
     }
   }
+
+  /**
+   * Intalll theme in skecthboot 
+   * @param zipTheme
+   */
+  static public ZippedTheme install(File zipTheme) throws IOException{
+
+    // Validate...
+    ZippedTheme theme = ZippedTheme.load(NAMESPACE_USER, zipTheme);
+
+    if(theme == null) {
+      throw new IOException(format(tr("Error loading theme: {0}"), zipTheme.getAbsolutePath()));
+    }
+
+    // Create themes folder.
+    File themesFolder = new File(PreferencesData.get("sketchbook.path"), "theme");
+    if (!themesFolder.exists()) {
+      themesFolder.mkdir();
+    }
+
+    // Copy
+    File dest = new File(themesFolder, zipTheme.getName());
+    Files.copy(zipTheme.toPath(), dest.toPath(),StandardCopyOption.REPLACE_EXISTING);
+
+    return theme;
+  }
 }