Index: trunk/src/org/openstreetmap/josm/gui/download/OverpassDownloadSource.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/download/OverpassDownloadSource.java	(revision 12879)
+++ trunk/src/org/openstreetmap/josm/gui/download/OverpassDownloadSource.java	(revision 12880)
@@ -91,5 +91,5 @@
 
         private final JosmTextArea overpassQuery;
-        private final OverpassQueryList overpassQueryList;
+        private final UserQueryList overpassQueryList;
 
         /**
@@ -134,5 +134,5 @@
 
 
-            this.overpassQueryList = new OverpassQueryList(this, this.overpassQuery);
+            this.overpassQueryList = new UserQueryList(this, this.overpassQuery, "download.overpass.query");
             this.overpassQueryList.setPreferredSize(new Dimension(350, 300));
 
@@ -288,5 +288,5 @@
 
         /**
-         * Action that delegates snippet creation to {@link OverpassQueryList#createNewItem()}.
+         * Action that delegates snippet creation to {@link UserQueryList#createNewItem()}.
          */
         private class AddSnippetAction extends AbstractAction {
@@ -308,5 +308,5 @@
 
         /**
-         * Action that delegates snippet removal to {@link OverpassQueryList#removeSelectedItem()}.
+         * Action that delegates snippet removal to {@link UserQueryList#removeSelectedItem()}.
          */
         private class RemoveSnippetAction extends AbstractAction implements ListSelectionListener {
@@ -341,5 +341,5 @@
 
         /**
-         * Action that delegates snippet edit to {@link OverpassQueryList#editSelectedItem()}.
+         * Action that delegates snippet edit to {@link UserQueryList#editSelectedItem()}.
          */
         private class EditSnippetAction extends AbstractAction implements ListSelectionListener {
Index: trunk/src/org/openstreetmap/josm/gui/download/OverpassQueryList.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/download/OverpassQueryList.java	(revision 12879)
+++ 	(revision )
@@ -1,657 +1,0 @@
-// License: GPL. For details, see LICENSE file.
-package org.openstreetmap.josm.gui.download;
-
-import static org.openstreetmap.josm.tools.I18n.tr;
-
-import java.awt.Color;
-import java.awt.Component;
-import java.awt.Dimension;
-import java.awt.Font;
-import java.awt.GridBagLayout;
-import java.awt.Point;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
-import java.time.LocalDateTime;
-import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeParseException;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Optional;
-import java.util.stream.Collectors;
-
-import javax.swing.AbstractAction;
-import javax.swing.BorderFactory;
-import javax.swing.JLabel;
-import javax.swing.JList;
-import javax.swing.JOptionPane;
-import javax.swing.JPanel;
-import javax.swing.JPopupMenu;
-import javax.swing.JScrollPane;
-import javax.swing.JTextField;
-import javax.swing.ListCellRenderer;
-import javax.swing.SwingUtilities;
-import javax.swing.border.CompoundBorder;
-import javax.swing.text.JTextComponent;
-
-import org.openstreetmap.josm.Main;
-import org.openstreetmap.josm.gui.ExtendedDialog;
-import org.openstreetmap.josm.gui.util.GuiHelper;
-import org.openstreetmap.josm.gui.widgets.AbstractTextComponentValidator;
-import org.openstreetmap.josm.gui.widgets.DefaultTextComponentValidator;
-import org.openstreetmap.josm.gui.widgets.JosmTextArea;
-import org.openstreetmap.josm.gui.widgets.SearchTextResultListPanel;
-import org.openstreetmap.josm.spi.preferences.Config;
-import org.openstreetmap.josm.tools.GBC;
-import org.openstreetmap.josm.tools.Logging;
-import org.openstreetmap.josm.tools.Utils;
-
-/**
- * A component to select user saved Overpass queries.
- * @since 12574
- */
-public final class OverpassQueryList extends SearchTextResultListPanel<OverpassQueryList.SelectorItem> {
-
-    private static final DateTimeFormatter FORMAT = DateTimeFormatter.ofPattern("HH:mm:ss, dd-MM-yyyy");
-
-    /*
-     * GUI elements
-     */
-    private final JTextComponent target;
-    private final Component componentParent;
-
-    /*
-     * All loaded elements within the list.
-     */
-    private final transient Map<String, SelectorItem> items;
-
-    /*
-     * Preferences
-     */
-    private static final String KEY_KEY = "key";
-    private static final String QUERY_KEY = "query";
-    private static final String LAST_EDIT_KEY = "lastEdit";
-    private static final String PREFERENCE_ITEMS = "download.overpass.query";
-
-    private static final String TRANSLATED_HISTORY = tr("history");
-
-    /**
-     * Constructs a new {@code OverpassQueryList}.
-     * @param parent The parent of this component.
-     * @param target The text component to which the queries must be added.
-     */
-    public OverpassQueryList(Component parent, JTextComponent target) {
-        this.target = target;
-        this.componentParent = parent;
-        this.items = restorePreferences();
-
-        OverpassQueryListMouseAdapter mouseHandler = new OverpassQueryListMouseAdapter(lsResult, lsResultModel);
-        super.lsResult.setCellRenderer(new OverpassQueryCellRendered());
-        super.setDblClickListener(e -> doubleClickEvent());
-        super.lsResult.addMouseListener(mouseHandler);
-        super.lsResult.addMouseMotionListener(mouseHandler);
-
-        filterItems();
-    }
-
-    /**
-     * Returns currently selected element from the list.
-     * @return An {@link Optional#empty()} if nothing is selected, otherwise
-     * the idem is returned.
-     */
-    public synchronized Optional<SelectorItem> getSelectedItem() {
-        int idx = lsResult.getSelectedIndex();
-        if (lsResultModel.getSize() <= idx || idx == -1) {
-            return Optional.empty();
-        }
-
-        SelectorItem item = lsResultModel.getElementAt(idx);
-
-        filterItems();
-
-        return Optional.of(item);
-    }
-
-    /**
-     * Adds a new historic item to the list. The key has form 'history {current date}'.
-     * Note, the item is not saved if there is already a historic item with the same query.
-     * @param query The query of the item.
-     * @exception IllegalArgumentException if the query is empty.
-     * @exception NullPointerException if the query is {@code null}.
-     */
-    public synchronized void saveHistoricItem(String query) {
-        boolean historicExist = this.items.values().stream()
-                .map(SelectorItem::getQuery)
-                .anyMatch(q -> q.equals(query));
-
-        if (!historicExist) {
-            SelectorItem item = new SelectorItem(
-                    TRANSLATED_HISTORY + " " + LocalDateTime.now().format(FORMAT), query);
-
-            this.items.put(item.getKey(), item);
-
-            savePreferences();
-            filterItems();
-        }
-    }
-
-    /**
-     * Removes currently selected item, saves the current state to preferences and
-     * updates the view.
-     */
-    public synchronized void removeSelectedItem() {
-        Optional<SelectorItem> it = this.getSelectedItem();
-
-        if (!it.isPresent()) {
-            JOptionPane.showMessageDialog(
-                    componentParent,
-                    tr("Please select an item first"));
-            return;
-        }
-
-        SelectorItem item = it.get();
-        if (this.items.remove(item.getKey(), item)) {
-            clearSelection();
-            savePreferences();
-            filterItems();
-        }
-    }
-
-    /**
-     * Opens {@link EditItemDialog} for the selected item, saves the current state
-     * to preferences and updates the view.
-     */
-    public synchronized void editSelectedItem() {
-        Optional<SelectorItem> it = this.getSelectedItem();
-
-        if (!it.isPresent()) {
-            JOptionPane.showMessageDialog(
-                    componentParent,
-                    tr("Please select an item first"));
-            return;
-        }
-
-        SelectorItem item = it.get();
-
-        EditItemDialog dialog = new EditItemDialog(
-                componentParent,
-                tr("Edit item"),
-                item,
-                tr("Save"), tr("Cancel"));
-        dialog.showDialog();
-
-        Optional<SelectorItem> editedItem = dialog.getOutputItem();
-        editedItem.ifPresent(i -> {
-            this.items.remove(item.getKey(), item);
-            this.items.put(i.getKey(), i);
-
-            savePreferences();
-            filterItems();
-        });
-    }
-
-    /**
-     * Opens {@link EditItemDialog}, saves the state to preferences if a new item is added
-     * and updates the view.
-     */
-    public synchronized void createNewItem() {
-        EditItemDialog dialog = new EditItemDialog(componentParent, tr("Add snippet"), tr("Add"));
-        dialog.showDialog();
-
-        Optional<SelectorItem> newItem = dialog.getOutputItem();
-        newItem.ifPresent(i -> {
-            items.put(i.getKey(), i);
-            savePreferences();
-            filterItems();
-        });
-    }
-
-    @Override
-    public void setDblClickListener(ActionListener dblClickListener) {
-        // this listener is already set within this class
-    }
-
-    @Override
-    protected void filterItems() {
-        String text = edSearchText.getText().toLowerCase(Locale.ENGLISH);
-        List<SelectorItem> matchingItems = this.items.values().stream()
-                .sorted((i1, i2) -> i2.getLastEdit().compareTo(i1.getLastEdit()))
-                .filter(item -> item.getKey().contains(text))
-                .collect(Collectors.toList());
-
-        super.lsResultModel.setItems(matchingItems);
-    }
-
-    private void doubleClickEvent() {
-        Optional<SelectorItem> selectedItem = this.getSelectedItem();
-
-        if (!selectedItem.isPresent()) {
-            return;
-        }
-
-        SelectorItem item = selectedItem.get();
-        this.target.setText(item.getQuery());
-    }
-
-    /**
-     * Saves all elements from the list to {@link Main#pref}.
-     */
-    private void savePreferences() {
-        List<Map<String, String>> toSave = new ArrayList<>(this.items.size());
-        for (SelectorItem item : this.items.values()) {
-            Map<String, String> it = new HashMap<>();
-            it.put(KEY_KEY, item.getKey());
-            it.put(QUERY_KEY, item.getQuery());
-            it.put(LAST_EDIT_KEY, item.getLastEdit().format(FORMAT));
-
-            toSave.add(it);
-        }
-
-        Config.getPref().putListOfMaps(PREFERENCE_ITEMS, toSave);
-    }
-
-    /**
-     * Loads the user saved items from {@link Main#pref}.
-     * @return A set of the user saved items.
-     */
-    private static Map<String, SelectorItem> restorePreferences() {
-        Collection<Map<String, String>> toRetrieve =
-                Config.getPref().getListOfMaps(PREFERENCE_ITEMS, Collections.emptyList());
-        Map<String, SelectorItem> result = new HashMap<>();
-
-        for (Map<String, String> entry : toRetrieve) {
-            try {
-                String key = entry.get(KEY_KEY);
-                String query = entry.get(QUERY_KEY);
-                String lastEditText = entry.get(LAST_EDIT_KEY);
-                // Compatibility: Some entries may not have a last edit set.
-                LocalDateTime lastEdit = lastEditText == null ? LocalDateTime.MIN : LocalDateTime.parse(lastEditText, FORMAT);
-
-                result.put(key, new SelectorItem(key, query, lastEdit));
-            } catch (IllegalArgumentException | DateTimeParseException e) {
-                // skip any corrupted item
-                Logging.error(e);
-            }
-        }
-
-        return result;
-    }
-
-    private class OverpassQueryListMouseAdapter extends MouseAdapter {
-
-        private final JList<SelectorItem> list;
-        private final ResultListModel<SelectorItem> model;
-        private final JPopupMenu emptySelectionPopup = new JPopupMenu();
-        private final JPopupMenu elementPopup = new JPopupMenu();
-
-        OverpassQueryListMouseAdapter(JList<SelectorItem> list, ResultListModel<SelectorItem> listModel) {
-            this.list = list;
-            this.model = listModel;
-
-            this.initPopupMenus();
-        }
-
-        /*
-         * Do not select the closest element if the user clicked on
-         * an empty area within the list.
-         */
-        private int locationToIndex(Point p) {
-            int idx = list.locationToIndex(p);
-
-            if (idx != -1 && !list.getCellBounds(idx, idx).contains(p)) {
-                return -1;
-            } else {
-                return idx;
-            }
-        }
-
-        @Override
-        public void mouseClicked(MouseEvent e) {
-            super.mouseClicked(e);
-            if (SwingUtilities.isRightMouseButton(e)) {
-                int index = locationToIndex(e.getPoint());
-
-                if (model.getSize() == 0 || index == -1) {
-                    list.clearSelection();
-                    emptySelectionPopup.show(list, e.getX(), e.getY());
-                } else {
-                    list.setSelectedIndex(index);
-                    list.ensureIndexIsVisible(index);
-                    elementPopup.show(list, e.getX(), e.getY());
-                }
-            }
-        }
-
-        @Override
-        public void mouseMoved(MouseEvent e) {
-            super.mouseMoved(e);
-            int idx = locationToIndex(e.getPoint());
-            if (idx == -1) {
-                return;
-            }
-
-            SelectorItem item = model.getElementAt(idx);
-            list.setToolTipText("<html><pre style='width:300px;'>" +
-                    Utils.escapeReservedCharactersHTML(Utils.restrictStringLines(item.getQuery(), 9)));
-        }
-
-        private void initPopupMenus() {
-            AbstractAction add = new AbstractAction(tr("Add")) {
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                    createNewItem();
-                }
-            };
-            AbstractAction edit = new AbstractAction(tr("Edit")) {
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                    editSelectedItem();
-                }
-            };
-            AbstractAction remove = new AbstractAction(tr("Remove")) {
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                    removeSelectedItem();
-                }
-            };
-            this.emptySelectionPopup.add(add);
-            this.elementPopup.add(add);
-            this.elementPopup.add(edit);
-            this.elementPopup.add(remove);
-        }
-    }
-
-    /**
-     * This class defines the way each element is rendered in the list.
-     */
-    private static class OverpassQueryCellRendered extends JLabel implements ListCellRenderer<SelectorItem> {
-
-        OverpassQueryCellRendered() {
-            setOpaque(true);
-        }
-
-        @Override
-        public Component getListCellRendererComponent(
-                JList<? extends SelectorItem> list,
-                SelectorItem value,
-                int index,
-                boolean isSelected,
-                boolean cellHasFocus) {
-
-            Font font = list.getFont();
-            if (isSelected) {
-                setFont(new Font(font.getFontName(), Font.BOLD, font.getSize() + 2));
-                setBackground(list.getSelectionBackground());
-                setForeground(list.getSelectionForeground());
-            } else {
-                setFont(new Font(font.getFontName(), Font.PLAIN, font.getSize() + 2));
-                setBackground(list.getBackground());
-                setForeground(list.getForeground());
-            }
-
-            setEnabled(list.isEnabled());
-            setText(value.getKey());
-
-            if (isSelected && cellHasFocus) {
-                setBorder(new CompoundBorder(
-                        BorderFactory.createLineBorder(Color.BLACK, 1),
-                        BorderFactory.createEmptyBorder(2, 0, 2, 0)));
-            } else {
-                setBorder(new CompoundBorder(
-                        null,
-                        BorderFactory.createEmptyBorder(2, 0, 2, 0)));
-            }
-
-            return this;
-        }
-    }
-
-    /**
-     * Dialog that provides functionality to add/edit an item from the list.
-     */
-    private final class EditItemDialog extends ExtendedDialog {
-
-        private final JTextField name;
-        private final JosmTextArea query;
-
-        private final transient AbstractTextComponentValidator queryValidator;
-        private final transient AbstractTextComponentValidator nameValidator;
-
-        private static final int SUCCESS_BTN = 0;
-        private static final int CANCEL_BTN = 1;
-
-        private final transient SelectorItem itemToEdit;
-
-        /**
-         * Added/Edited object to be returned. If {@link Optional#empty()} then probably
-         * the user closed the dialog, otherwise {@link SelectorItem} is present.
-         */
-        private transient Optional<SelectorItem> outputItem = Optional.empty();
-
-        EditItemDialog(Component parent, String title, String... buttonTexts) {
-            this(parent, title, null, buttonTexts);
-        }
-
-        EditItemDialog(
-                Component parent,
-                String title,
-                SelectorItem itemToEdit,
-                String... buttonTexts) {
-            super(parent, title, buttonTexts);
-
-            this.itemToEdit = itemToEdit;
-
-            String nameToEdit = itemToEdit == null ? "" : itemToEdit.getKey();
-            String queryToEdit = itemToEdit == null ? "" : itemToEdit.getQuery();
-
-            this.name = new JTextField(nameToEdit);
-            this.query = new JosmTextArea(queryToEdit);
-
-            this.queryValidator = new DefaultTextComponentValidator(this.query, "", tr("Query cannot be empty"));
-            this.nameValidator = new AbstractTextComponentValidator(this.name) {
-                @Override
-                public void validate() {
-                    if (isValid()) {
-                        feedbackValid(tr("This name can be used for the item"));
-                    } else {
-                        feedbackInvalid(tr("Item with this name already exists"));
-                    }
-                }
-
-                @Override
-                public boolean isValid() {
-                    String currentName = name.getText();
-
-                    boolean notEmpty = !Utils.isStripEmpty(currentName);
-                    boolean exist = !currentName.equals(nameToEdit) &&
-                                        items.containsKey(currentName);
-
-                    return notEmpty && !exist;
-                }
-            };
-
-            this.name.getDocument().addDocumentListener(this.nameValidator);
-            this.query.getDocument().addDocumentListener(this.queryValidator);
-
-            JPanel panel = new JPanel(new GridBagLayout());
-            JScrollPane queryScrollPane = GuiHelper.embedInVerticalScrollPane(this.query);
-            queryScrollPane.getVerticalScrollBar().setUnitIncrement(10); // make scrolling smooth
-
-            GBC constraint = GBC.eol().insets(8, 0, 8, 8).anchor(GBC.CENTER).fill(GBC.HORIZONTAL);
-            constraint.ipady = 250;
-            panel.add(this.name, GBC.eol().insets(5).anchor(GBC.SOUTHEAST).fill(GBC.HORIZONTAL));
-            panel.add(queryScrollPane, constraint);
-
-            setDefaultButton(SUCCESS_BTN + 1);
-            setCancelButton(CANCEL_BTN + 1);
-            setPreferredSize(new Dimension(400, 400));
-            setContent(panel, false);
-        }
-
-        /**
-         * Gets a new {@link SelectorItem} if one was created/modified.
-         * @return A {@link SelectorItem} object created out of the fields of the dialog.
-         */
-        public Optional<SelectorItem> getOutputItem() {
-            return this.outputItem;
-        }
-
-        @Override
-        protected void buttonAction(int buttonIndex, ActionEvent evt) {
-            if (buttonIndex == SUCCESS_BTN) {
-                if (!this.nameValidator.isValid()) {
-                    JOptionPane.showMessageDialog(
-                            componentParent,
-                            tr("The item cannot be created with provided name"),
-                            tr("Warning"),
-                            JOptionPane.WARNING_MESSAGE);
-
-                    return;
-                } else if (!this.queryValidator.isValid()) {
-                    JOptionPane.showMessageDialog(
-                            componentParent,
-                            tr("The item cannot be created with an empty query"),
-                            tr("Warning"),
-                            JOptionPane.WARNING_MESSAGE);
-
-                    return;
-                } else if (this.itemToEdit != null) { // editing the item
-                    String newKey = this.name.getText();
-                    String newQuery = this.query.getText();
-
-                    String itemKey = this.itemToEdit.getKey();
-                    String itemQuery = this.itemToEdit.getQuery();
-
-                    this.outputItem = Optional.of(new SelectorItem(
-                            this.name.getText(),
-                            this.query.getText(),
-                            !newKey.equals(itemKey) || !newQuery.equals(itemQuery)
-                                ? LocalDateTime.now()
-                                : this.itemToEdit.getLastEdit()));
-
-                } else { // creating new
-                    this.outputItem = Optional.of(new SelectorItem(
-                            this.name.getText(),
-                            this.query.getText()));
-                }
-            }
-
-            super.buttonAction(buttonIndex, evt);
-        }
-    }
-
-    /**
-     * This class represents an Overpass query used by the user that can be
-     * shown within {@link OverpassQueryList}.
-     */
-    public static class SelectorItem {
-        private final String itemKey;
-        private final String query;
-        private final LocalDateTime lastEdit;
-
-        /**
-         * Constructs a new {@code SelectorItem}.
-         * @param key The key of this item.
-         * @param query The query of the item.
-         * @exception NullPointerException if any parameter is {@code null}.
-         * @exception IllegalArgumentException if any parameter is empty.
-         */
-        public SelectorItem(String key, String query) {
-            this(key, query, LocalDateTime.now());
-        }
-
-        /**
-         * Constructs a new {@code SelectorItem}.
-         * @param key The key of this item.
-         * @param query The query of the item.
-         * @param lastEdit The latest when the item was
-         * @exception NullPointerException if any parameter is {@code null}.
-         * @exception IllegalArgumentException if any parameter is empty.
-         */
-        public SelectorItem(String key, String query, LocalDateTime lastEdit) {
-            Objects.requireNonNull(key, "The name of the item cannot be null");
-            Objects.requireNonNull(query, "The query of the item cannot be null");
-            Objects.requireNonNull(lastEdit, "The last edit date time cannot be null");
-
-            if (Utils.isStripEmpty(key)) {
-                throw new IllegalArgumentException("The key of the item cannot be empty");
-            }
-            if (Utils.isStripEmpty(query)) {
-                throw new IllegalArgumentException("The query cannot be empty");
-            }
-
-            this.itemKey = key;
-            this.query = query;
-            this.lastEdit = lastEdit;
-        }
-
-        /**
-         * Gets the key (a string that is displayed in the selector) of this item.
-         * @return A string representing the key of this item.
-         */
-        public String getKey() {
-            return this.itemKey;
-        }
-
-        /**
-         * Gets the overpass query of this item.
-         * @return A string representing the overpass query of this item.
-         */
-        public String getQuery() {
-            return this.query;
-        }
-
-        /**
-         * Gets the latest date time when the item was created/changed.
-         * @return The latest date time when the item was created/changed.
-         */
-        public LocalDateTime getLastEdit() {
-            return lastEdit;
-        }
-
-        @Override
-        public int hashCode() {
-            final int prime = 31;
-            int result = 1;
-            result = prime * result + ((itemKey == null) ? 0 : itemKey.hashCode());
-            result = prime * result + ((query == null) ? 0 : query.hashCode());
-            return result;
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (this == obj) {
-                return true;
-            }
-            if (obj == null) {
-                return false;
-            }
-            if (getClass() != obj.getClass()) {
-                return false;
-            }
-            SelectorItem other = (SelectorItem) obj;
-            if (itemKey == null) {
-                if (other.itemKey != null) {
-                    return false;
-                }
-            } else if (!itemKey.equals(other.itemKey)) {
-                return false;
-            }
-            if (query == null) {
-                if (other.query != null) {
-                    return false;
-                }
-            } else if (!query.equals(other.query)) {
-                return false;
-            }
-            return true;
-        }
-    }
-}
Index: trunk/src/org/openstreetmap/josm/gui/download/UserQueryList.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/download/UserQueryList.java	(revision 12880)
+++ trunk/src/org/openstreetmap/josm/gui/download/UserQueryList.java	(revision 12880)
@@ -0,0 +1,660 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.gui.download;
+
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.GridBagLayout;
+import java.awt.Point;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import javax.swing.AbstractAction;
+import javax.swing.BorderFactory;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+import javax.swing.ListCellRenderer;
+import javax.swing.SwingUtilities;
+import javax.swing.border.CompoundBorder;
+import javax.swing.text.JTextComponent;
+
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.gui.ExtendedDialog;
+import org.openstreetmap.josm.gui.util.GuiHelper;
+import org.openstreetmap.josm.gui.widgets.AbstractTextComponentValidator;
+import org.openstreetmap.josm.gui.widgets.DefaultTextComponentValidator;
+import org.openstreetmap.josm.gui.widgets.JosmTextArea;
+import org.openstreetmap.josm.gui.widgets.SearchTextResultListPanel;
+import org.openstreetmap.josm.spi.preferences.Config;
+import org.openstreetmap.josm.tools.GBC;
+import org.openstreetmap.josm.tools.Logging;
+import org.openstreetmap.josm.tools.Utils;
+
+/**
+ * A component to select user saved queries.
+ * @since 12880
+ * @since 12574 as OverpassQueryList
+ */
+public final class UserQueryList extends SearchTextResultListPanel<UserQueryList.SelectorItem> {
+
+    private static final DateTimeFormatter FORMAT = DateTimeFormatter.ofPattern("HH:mm:ss, dd-MM-yyyy");
+
+    /*
+     * GUI elements
+     */
+    private final JTextComponent target;
+    private final Component componentParent;
+
+    /*
+     * All loaded elements within the list.
+     */
+    private final transient Map<String, SelectorItem> items;
+
+    /*
+     * Preferences
+     */
+    private static final String KEY_KEY = "key";
+    private static final String QUERY_KEY = "query";
+    private static final String LAST_EDIT_KEY = "lastEdit";
+    private final String preferenceKey;
+
+    private static final String TRANSLATED_HISTORY = tr("history");
+
+    /**
+     * Constructs a new {@code OverpassQueryList}.
+     * @param parent The parent of this component.
+     * @param target The text component to which the queries must be added.
+     * @param preferenceKey The {@linkplain org.openstreetmap.josm.spi.preferences.IPreferences preference} key to store the user queries
+     */
+    public UserQueryList(Component parent, JTextComponent target, String preferenceKey) {
+        this.target = target;
+        this.componentParent = parent;
+        this.preferenceKey = preferenceKey;
+        this.items = restorePreferences();
+
+        QueryListMouseAdapter mouseHandler = new QueryListMouseAdapter(lsResult, lsResultModel);
+        super.lsResult.setCellRenderer(new QueryCellRendered());
+        super.setDblClickListener(e -> doubleClickEvent());
+        super.lsResult.addMouseListener(mouseHandler);
+        super.lsResult.addMouseMotionListener(mouseHandler);
+
+        filterItems();
+    }
+
+    /**
+     * Returns currently selected element from the list.
+     * @return An {@link Optional#empty()} if nothing is selected, otherwise
+     * the idem is returned.
+     */
+    public synchronized Optional<SelectorItem> getSelectedItem() {
+        int idx = lsResult.getSelectedIndex();
+        if (lsResultModel.getSize() <= idx || idx == -1) {
+            return Optional.empty();
+        }
+
+        SelectorItem item = lsResultModel.getElementAt(idx);
+
+        filterItems();
+
+        return Optional.of(item);
+    }
+
+    /**
+     * Adds a new historic item to the list. The key has form 'history {current date}'.
+     * Note, the item is not saved if there is already a historic item with the same query.
+     * @param query The query of the item.
+     * @exception IllegalArgumentException if the query is empty.
+     * @exception NullPointerException if the query is {@code null}.
+     */
+    public synchronized void saveHistoricItem(String query) {
+        boolean historicExist = this.items.values().stream()
+                .map(SelectorItem::getQuery)
+                .anyMatch(q -> q.equals(query));
+
+        if (!historicExist) {
+            SelectorItem item = new SelectorItem(
+                    TRANSLATED_HISTORY + " " + LocalDateTime.now().format(FORMAT), query);
+
+            this.items.put(item.getKey(), item);
+
+            savePreferences();
+            filterItems();
+        }
+    }
+
+    /**
+     * Removes currently selected item, saves the current state to preferences and
+     * updates the view.
+     */
+    public synchronized void removeSelectedItem() {
+        Optional<SelectorItem> it = this.getSelectedItem();
+
+        if (!it.isPresent()) {
+            JOptionPane.showMessageDialog(
+                    componentParent,
+                    tr("Please select an item first"));
+            return;
+        }
+
+        SelectorItem item = it.get();
+        if (this.items.remove(item.getKey(), item)) {
+            clearSelection();
+            savePreferences();
+            filterItems();
+        }
+    }
+
+    /**
+     * Opens {@link EditItemDialog} for the selected item, saves the current state
+     * to preferences and updates the view.
+     */
+    public synchronized void editSelectedItem() {
+        Optional<SelectorItem> it = this.getSelectedItem();
+
+        if (!it.isPresent()) {
+            JOptionPane.showMessageDialog(
+                    componentParent,
+                    tr("Please select an item first"));
+            return;
+        }
+
+        SelectorItem item = it.get();
+
+        EditItemDialog dialog = new EditItemDialog(
+                componentParent,
+                tr("Edit item"),
+                item,
+                tr("Save"), tr("Cancel"));
+        dialog.showDialog();
+
+        Optional<SelectorItem> editedItem = dialog.getOutputItem();
+        editedItem.ifPresent(i -> {
+            this.items.remove(item.getKey(), item);
+            this.items.put(i.getKey(), i);
+
+            savePreferences();
+            filterItems();
+        });
+    }
+
+    /**
+     * Opens {@link EditItemDialog}, saves the state to preferences if a new item is added
+     * and updates the view.
+     */
+    public synchronized void createNewItem() {
+        EditItemDialog dialog = new EditItemDialog(componentParent, tr("Add snippet"), tr("Add"));
+        dialog.showDialog();
+
+        Optional<SelectorItem> newItem = dialog.getOutputItem();
+        newItem.ifPresent(i -> {
+            items.put(i.getKey(), i);
+            savePreferences();
+            filterItems();
+        });
+    }
+
+    @Override
+    public void setDblClickListener(ActionListener dblClickListener) {
+        // this listener is already set within this class
+    }
+
+    @Override
+    protected void filterItems() {
+        String text = edSearchText.getText().toLowerCase(Locale.ENGLISH);
+        List<SelectorItem> matchingItems = this.items.values().stream()
+                .sorted((i1, i2) -> i2.getLastEdit().compareTo(i1.getLastEdit()))
+                .filter(item -> item.getKey().contains(text))
+                .collect(Collectors.toList());
+
+        super.lsResultModel.setItems(matchingItems);
+    }
+
+    private void doubleClickEvent() {
+        Optional<SelectorItem> selectedItem = this.getSelectedItem();
+
+        if (!selectedItem.isPresent()) {
+            return;
+        }
+
+        SelectorItem item = selectedItem.get();
+        this.target.setText(item.getQuery());
+    }
+
+    /**
+     * Saves all elements from the list to {@link Main#pref}.
+     */
+    private void savePreferences() {
+        List<Map<String, String>> toSave = new ArrayList<>(this.items.size());
+        for (SelectorItem item : this.items.values()) {
+            Map<String, String> it = new HashMap<>();
+            it.put(KEY_KEY, item.getKey());
+            it.put(QUERY_KEY, item.getQuery());
+            it.put(LAST_EDIT_KEY, item.getLastEdit().format(FORMAT));
+
+            toSave.add(it);
+        }
+
+        Config.getPref().putListOfMaps(preferenceKey, toSave);
+    }
+
+    /**
+     * Loads the user saved items from {@link Main#pref}.
+     * @return A set of the user saved items.
+     */
+    private Map<String, SelectorItem> restorePreferences() {
+        Collection<Map<String, String>> toRetrieve =
+                Config.getPref().getListOfMaps(preferenceKey, Collections.emptyList());
+        Map<String, SelectorItem> result = new HashMap<>();
+
+        for (Map<String, String> entry : toRetrieve) {
+            try {
+                String key = entry.get(KEY_KEY);
+                String query = entry.get(QUERY_KEY);
+                String lastEditText = entry.get(LAST_EDIT_KEY);
+                // Compatibility: Some entries may not have a last edit set.
+                LocalDateTime lastEdit = lastEditText == null ? LocalDateTime.MIN : LocalDateTime.parse(lastEditText, FORMAT);
+
+                result.put(key, new SelectorItem(key, query, lastEdit));
+            } catch (IllegalArgumentException | DateTimeParseException e) {
+                // skip any corrupted item
+                Logging.error(e);
+            }
+        }
+
+        return result;
+    }
+
+    private class QueryListMouseAdapter extends MouseAdapter {
+
+        private final JList<SelectorItem> list;
+        private final ResultListModel<SelectorItem> model;
+        private final JPopupMenu emptySelectionPopup = new JPopupMenu();
+        private final JPopupMenu elementPopup = new JPopupMenu();
+
+        QueryListMouseAdapter(JList<SelectorItem> list, ResultListModel<SelectorItem> listModel) {
+            this.list = list;
+            this.model = listModel;
+
+            this.initPopupMenus();
+        }
+
+        /*
+         * Do not select the closest element if the user clicked on
+         * an empty area within the list.
+         */
+        private int locationToIndex(Point p) {
+            int idx = list.locationToIndex(p);
+
+            if (idx != -1 && !list.getCellBounds(idx, idx).contains(p)) {
+                return -1;
+            } else {
+                return idx;
+            }
+        }
+
+        @Override
+        public void mouseClicked(MouseEvent e) {
+            super.mouseClicked(e);
+            if (SwingUtilities.isRightMouseButton(e)) {
+                int index = locationToIndex(e.getPoint());
+
+                if (model.getSize() == 0 || index == -1) {
+                    list.clearSelection();
+                    emptySelectionPopup.show(list, e.getX(), e.getY());
+                } else {
+                    list.setSelectedIndex(index);
+                    list.ensureIndexIsVisible(index);
+                    elementPopup.show(list, e.getX(), e.getY());
+                }
+            }
+        }
+
+        @Override
+        public void mouseMoved(MouseEvent e) {
+            super.mouseMoved(e);
+            int idx = locationToIndex(e.getPoint());
+            if (idx == -1) {
+                return;
+            }
+
+            SelectorItem item = model.getElementAt(idx);
+            list.setToolTipText("<html><pre style='width:300px;'>" +
+                    Utils.escapeReservedCharactersHTML(Utils.restrictStringLines(item.getQuery(), 9)));
+        }
+
+        private void initPopupMenus() {
+            AbstractAction add = new AbstractAction(tr("Add")) {
+                @Override
+                public void actionPerformed(ActionEvent e) {
+                    createNewItem();
+                }
+            };
+            AbstractAction edit = new AbstractAction(tr("Edit")) {
+                @Override
+                public void actionPerformed(ActionEvent e) {
+                    editSelectedItem();
+                }
+            };
+            AbstractAction remove = new AbstractAction(tr("Remove")) {
+                @Override
+                public void actionPerformed(ActionEvent e) {
+                    removeSelectedItem();
+                }
+            };
+            this.emptySelectionPopup.add(add);
+            this.elementPopup.add(add);
+            this.elementPopup.add(edit);
+            this.elementPopup.add(remove);
+        }
+    }
+
+    /**
+     * This class defines the way each element is rendered in the list.
+     */
+    private static class QueryCellRendered extends JLabel implements ListCellRenderer<SelectorItem> {
+
+        QueryCellRendered() {
+            setOpaque(true);
+        }
+
+        @Override
+        public Component getListCellRendererComponent(
+                JList<? extends SelectorItem> list,
+                SelectorItem value,
+                int index,
+                boolean isSelected,
+                boolean cellHasFocus) {
+
+            Font font = list.getFont();
+            if (isSelected) {
+                setFont(new Font(font.getFontName(), Font.BOLD, font.getSize() + 2));
+                setBackground(list.getSelectionBackground());
+                setForeground(list.getSelectionForeground());
+            } else {
+                setFont(new Font(font.getFontName(), Font.PLAIN, font.getSize() + 2));
+                setBackground(list.getBackground());
+                setForeground(list.getForeground());
+            }
+
+            setEnabled(list.isEnabled());
+            setText(value.getKey());
+
+            if (isSelected && cellHasFocus) {
+                setBorder(new CompoundBorder(
+                        BorderFactory.createLineBorder(Color.BLACK, 1),
+                        BorderFactory.createEmptyBorder(2, 0, 2, 0)));
+            } else {
+                setBorder(new CompoundBorder(
+                        null,
+                        BorderFactory.createEmptyBorder(2, 0, 2, 0)));
+            }
+
+            return this;
+        }
+    }
+
+    /**
+     * Dialog that provides functionality to add/edit an item from the list.
+     */
+    private final class EditItemDialog extends ExtendedDialog {
+
+        private final JTextField name;
+        private final JosmTextArea query;
+
+        private final transient AbstractTextComponentValidator queryValidator;
+        private final transient AbstractTextComponentValidator nameValidator;
+
+        private static final int SUCCESS_BTN = 0;
+        private static final int CANCEL_BTN = 1;
+
+        private final transient SelectorItem itemToEdit;
+
+        /**
+         * Added/Edited object to be returned. If {@link Optional#empty()} then probably
+         * the user closed the dialog, otherwise {@link SelectorItem} is present.
+         */
+        private transient Optional<SelectorItem> outputItem = Optional.empty();
+
+        EditItemDialog(Component parent, String title, String... buttonTexts) {
+            this(parent, title, null, buttonTexts);
+        }
+
+        EditItemDialog(
+                Component parent,
+                String title,
+                SelectorItem itemToEdit,
+                String... buttonTexts) {
+            super(parent, title, buttonTexts);
+
+            this.itemToEdit = itemToEdit;
+
+            String nameToEdit = itemToEdit == null ? "" : itemToEdit.getKey();
+            String queryToEdit = itemToEdit == null ? "" : itemToEdit.getQuery();
+
+            this.name = new JTextField(nameToEdit);
+            this.query = new JosmTextArea(queryToEdit);
+
+            this.queryValidator = new DefaultTextComponentValidator(this.query, "", tr("Query cannot be empty"));
+            this.nameValidator = new AbstractTextComponentValidator(this.name) {
+                @Override
+                public void validate() {
+                    if (isValid()) {
+                        feedbackValid(tr("This name can be used for the item"));
+                    } else {
+                        feedbackInvalid(tr("Item with this name already exists"));
+                    }
+                }
+
+                @Override
+                public boolean isValid() {
+                    String currentName = name.getText();
+
+                    boolean notEmpty = !Utils.isStripEmpty(currentName);
+                    boolean exist = !currentName.equals(nameToEdit) &&
+                                        items.containsKey(currentName);
+
+                    return notEmpty && !exist;
+                }
+            };
+
+            this.name.getDocument().addDocumentListener(this.nameValidator);
+            this.query.getDocument().addDocumentListener(this.queryValidator);
+
+            JPanel panel = new JPanel(new GridBagLayout());
+            JScrollPane queryScrollPane = GuiHelper.embedInVerticalScrollPane(this.query);
+            queryScrollPane.getVerticalScrollBar().setUnitIncrement(10); // make scrolling smooth
+
+            GBC constraint = GBC.eol().insets(8, 0, 8, 8).anchor(GBC.CENTER).fill(GBC.HORIZONTAL);
+            constraint.ipady = 250;
+            panel.add(this.name, GBC.eol().insets(5).anchor(GBC.SOUTHEAST).fill(GBC.HORIZONTAL));
+            panel.add(queryScrollPane, constraint);
+
+            setDefaultButton(SUCCESS_BTN + 1);
+            setCancelButton(CANCEL_BTN + 1);
+            setPreferredSize(new Dimension(400, 400));
+            setContent(panel, false);
+        }
+
+        /**
+         * Gets a new {@link SelectorItem} if one was created/modified.
+         * @return A {@link SelectorItem} object created out of the fields of the dialog.
+         */
+        public Optional<SelectorItem> getOutputItem() {
+            return this.outputItem;
+        }
+
+        @Override
+        protected void buttonAction(int buttonIndex, ActionEvent evt) {
+            if (buttonIndex == SUCCESS_BTN) {
+                if (!this.nameValidator.isValid()) {
+                    JOptionPane.showMessageDialog(
+                            componentParent,
+                            tr("The item cannot be created with provided name"),
+                            tr("Warning"),
+                            JOptionPane.WARNING_MESSAGE);
+
+                    return;
+                } else if (!this.queryValidator.isValid()) {
+                    JOptionPane.showMessageDialog(
+                            componentParent,
+                            tr("The item cannot be created with an empty query"),
+                            tr("Warning"),
+                            JOptionPane.WARNING_MESSAGE);
+
+                    return;
+                } else if (this.itemToEdit != null) { // editing the item
+                    String newKey = this.name.getText();
+                    String newQuery = this.query.getText();
+
+                    String itemKey = this.itemToEdit.getKey();
+                    String itemQuery = this.itemToEdit.getQuery();
+
+                    this.outputItem = Optional.of(new SelectorItem(
+                            this.name.getText(),
+                            this.query.getText(),
+                            !newKey.equals(itemKey) || !newQuery.equals(itemQuery)
+                                ? LocalDateTime.now()
+                                : this.itemToEdit.getLastEdit()));
+
+                } else { // creating new
+                    this.outputItem = Optional.of(new SelectorItem(
+                            this.name.getText(),
+                            this.query.getText()));
+                }
+            }
+
+            super.buttonAction(buttonIndex, evt);
+        }
+    }
+
+    /**
+     * This class represents an Overpass query used by the user that can be
+     * shown within {@link UserQueryList}.
+     */
+    public static class SelectorItem {
+        private final String itemKey;
+        private final String query;
+        private final LocalDateTime lastEdit;
+
+        /**
+         * Constructs a new {@code SelectorItem}.
+         * @param key The key of this item.
+         * @param query The query of the item.
+         * @exception NullPointerException if any parameter is {@code null}.
+         * @exception IllegalArgumentException if any parameter is empty.
+         */
+        public SelectorItem(String key, String query) {
+            this(key, query, LocalDateTime.now());
+        }
+
+        /**
+         * Constructs a new {@code SelectorItem}.
+         * @param key The key of this item.
+         * @param query The query of the item.
+         * @param lastEdit The latest when the item was
+         * @exception NullPointerException if any parameter is {@code null}.
+         * @exception IllegalArgumentException if any parameter is empty.
+         */
+        public SelectorItem(String key, String query, LocalDateTime lastEdit) {
+            Objects.requireNonNull(key, "The name of the item cannot be null");
+            Objects.requireNonNull(query, "The query of the item cannot be null");
+            Objects.requireNonNull(lastEdit, "The last edit date time cannot be null");
+
+            if (Utils.isStripEmpty(key)) {
+                throw new IllegalArgumentException("The key of the item cannot be empty");
+            }
+            if (Utils.isStripEmpty(query)) {
+                throw new IllegalArgumentException("The query cannot be empty");
+            }
+
+            this.itemKey = key;
+            this.query = query;
+            this.lastEdit = lastEdit;
+        }
+
+        /**
+         * Gets the key (a string that is displayed in the selector) of this item.
+         * @return A string representing the key of this item.
+         */
+        public String getKey() {
+            return this.itemKey;
+        }
+
+        /**
+         * Gets the query of this item.
+         * @return A string representing the query of this item.
+         */
+        public String getQuery() {
+            return this.query;
+        }
+
+        /**
+         * Gets the latest date time when the item was created/changed.
+         * @return The latest date time when the item was created/changed.
+         */
+        public LocalDateTime getLastEdit() {
+            return lastEdit;
+        }
+
+        @Override
+        public int hashCode() {
+            final int prime = 31;
+            int result = 1;
+            result = prime * result + ((itemKey == null) ? 0 : itemKey.hashCode());
+            result = prime * result + ((query == null) ? 0 : query.hashCode());
+            return result;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj == null) {
+                return false;
+            }
+            if (getClass() != obj.getClass()) {
+                return false;
+            }
+            SelectorItem other = (SelectorItem) obj;
+            if (itemKey == null) {
+                if (other.itemKey != null) {
+                    return false;
+                }
+            } else if (!itemKey.equals(other.itemKey)) {
+                return false;
+            }
+            if (query == null) {
+                if (other.query != null) {
+                    return false;
+                }
+            } else if (!query.equals(other.query)) {
+                return false;
+            }
+            return true;
+        }
+    }
+}