Add "Folder" filter for DeckManagers

.gitattributes

@@ -15511,6 +15511,7 @@ forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/CardSetFilter.java
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/CardToughnessFilter.java -text
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/CardTypeFilter.java -text
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckColorFilter.java -text
+forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckFolderFilter.java -text
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckFormatFilter.java -text
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckQuestWorldFilter.java -text
 forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckSearchFilter.java -text

forge-gui/src/main/java/forge/gui/toolbox/itemmanager/DeckManager.java

@@ -4,13 +4,19 @@ import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Rectangle;
 import java.awt.event.MouseEvent;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
 import javax.swing.JMenu;
 import javax.swing.JTable;
 import javax.swing.event.ListSelectionEvent;
 import javax.swing.event.ListSelectionListener;
 
+import org.apache.commons.lang3.StringUtils;
+
 import forge.Command;
 import forge.Singletons;
 import forge.deck.DeckBase;
@@ -28,6 +34,7 @@ import forge.gui.home.quest.DialogChooseSets;
 import forge.gui.toolbox.FOptionPane;
 import forge.gui.toolbox.FSkin;
 import forge.gui.toolbox.itemmanager.filters.DeckColorFilter;
+import forge.gui.toolbox.itemmanager.filters.DeckFolderFilter;
 import forge.gui.toolbox.itemmanager.filters.DeckFormatFilter;
 import forge.gui.toolbox.itemmanager.filters.DeckQuestWorldFilter;
 import forge.gui.toolbox.itemmanager.filters.DeckSearchFilter;
@@ -160,6 +167,29 @@ public final class DeckManager extends ItemManager<DeckProxy> {
 
         GuiUtils.addSeparator(menu); //separate from current search item
 
+        Set<String> folders = new HashSet<String>();
+        for (final Entry<DeckProxy, Integer> deckEntry : getPool()) {
+            String path = deckEntry.getKey().getPath();
+            if (StringUtils.isNotEmpty(path)) { //don't include root folder as option
+                folders.add(path);
+            }
+        }
+        JMenu folder = GuiUtils.createMenu("Folder");
+        if (folders.size() > 0) {
+            for (final String f : folders) {
+                GuiUtils.addMenuItem(folder, f, null, new Runnable() {
+                    @Override
+                    public void run() {
+                        addFilter(new DeckFolderFilter(DeckManager.this, f));
+                    }
+                }, true);
+            }
+        }
+        else {
+            folder.setEnabled(false);
+        }
+        menu.add(folder);
+
         JMenu fmt = GuiUtils.createMenu("Format");
         for (final GameFormat f : Singletons.getModel().getFormats()) {
             GuiUtils.addMenuItem(fmt, f.getName(), null, new Runnable() {

forge-gui/src/main/java/forge/gui/toolbox/itemmanager/filters/DeckFolderFilter.java

@@ -0,0 +1,82 @@
+package forge.gui.toolbox.itemmanager.filters;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import com.google.common.base.Predicate;
+
+import forge.gui.deckeditor.DeckProxy;
+import forge.gui.toolbox.itemmanager.ItemManager;
+
+/** 
+ * TODO: Write javadoc for this type.
+ *
+ */
+public class DeckFolderFilter extends ListLabelFilter<DeckProxy> {
+    protected final Set<String> folders = new HashSet<String>();
+
+    public DeckFolderFilter(ItemManager<? super DeckProxy> itemManager0) {
+        super(itemManager0);
+    }
+
+    public DeckFolderFilter(ItemManager<? super DeckProxy> itemManager0, String folder0) {
+        super(itemManager0);
+        this.folders.add(folder0);
+    }
+
+    @Override
+    public ItemFilter<DeckProxy> createCopy() {
+        DeckFolderFilter copy = new DeckFolderFilter(itemManager);
+        copy.folders.addAll(this.folders);
+        return copy;
+    }
+
+    @Override
+    protected final Predicate<DeckProxy> buildPredicate() {
+        return new Predicate<DeckProxy>() {
+            @Override
+            public boolean apply(DeckProxy input) {
+                String path = input.getPath();
+                for (String folder : folders) {
+                    if (path.startsWith(folder)) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+        };
+    }
+
+    @Override
+    protected String getCaption() {
+        return "Folder";
+    }
+
+    @Override
+    protected Iterable<String> getList() {
+        return this.folders;
+    }
+
+    @Override
+    protected String getTooltip() {
+        return null;
+    }
+
+    @Override
+    protected int getCount() {
+        return this.folders.size();
+    }
+
+    @Override
+    public void reset() {
+        this.folders.clear();
+        this.updateLabel();
+    }
+
+    @Override
+    public boolean merge(ItemFilter<?> filter) {
+        DeckFolderFilter formatFilter = (DeckFolderFilter)filter;
+        this.folders.addAll(formatFilter.folders);
+        return true;
+    }
+}