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diff --git a/src/breadcrumb_curses.hh b/src/breadcrumb_curses.hh
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+/**
+ * Copyright (c) 2022, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lnav_breadcrumb_curses_hh
+#define lnav_breadcrumb_curses_hh
+
+#include <functional>
+#include <utility>
+#include <vector>
+
+#include "plain_text_source.hh"
+#include "textview_curses.hh"
+#include "view_curses.hh"
+
+class breadcrumb_curses : public view_curses {
+public:
+    breadcrumb_curses();
+
+    void set_y(int y)
+    {
+        this->bc_y = y;
+        this->bc_match_view.set_y(y + 1);
+    }
+
+    int get_y() const { return this->bc_y; }
+
+    void set_window(WINDOW* win)
+    {
+        this->bc_window = win;
+        this->bc_match_view.set_window(win);
+    }
+
+    void set_line_source(std::function<std::vector<breadcrumb::crumb>()> ls)
+    {
+        this->bc_line_source = std::move(ls);
+    }
+
+    void focus();
+    void blur();
+
+    bool handle_key(int ch);
+
+    void do_update() override;
+
+    void reload_data();
+
+private:
+    class search_overlay_source : public list_overlay_source {
+    public:
+        bool list_value_for_overlay(const listview_curses& lv,
+                                    int y,
+                                    int bottom,
+                                    vis_line_t line,
+                                    attr_line_t& value_out) override;
+
+        breadcrumb_curses* sos_parent{nullptr};
+    };
+
+    enum class perform_behavior_t {
+        always,
+        if_different,
+    };
+
+    void perform_selection(perform_behavior_t behavior);
+
+    WINDOW* bc_window{nullptr};
+    std::function<std::vector<breadcrumb::crumb>()> bc_line_source;
+    int bc_y{0};
+    std::vector<breadcrumb::crumb> bc_focused_crumbs;
+    nonstd::optional<size_t> bc_selected_crumb;
+    nonstd::optional<size_t> bc_last_selected_crumb;
+    std::vector<breadcrumb::possibility> bc_possible_values;
+    std::vector<breadcrumb::possibility> bc_similar_values;
+    std::string bc_current_search;
+
+    plain_text_source bc_match_source;
+    search_overlay_source bc_match_search_overlay;
+    textview_curses bc_match_view;
+};
+
+#endif