breadcrumb.hpp

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#pragma once
 
#include <pulp/view/view.hpp>
#include <functional>
#include <string>
#include <vector>
 
namespace pulp::view {
 
// ── Breadcrumb ──────────────────────────────────────────────────────────────
// Navigation breadcrumb trail.
 
class Breadcrumb : public View {
public:
    struct Item {
        std::string label;
        std::string id;       // Optional identifier for callback
    };
 
    Breadcrumb();

    void set_items(std::vector<Item> items);
    const std::vector<Item>& items() const { return items_; }

    void push(Item item);

    Item pop();

    void pop_to(size_t index);

    std::function<void(size_t index, const Item& item)> on_navigate;

    void set_separator(std::string sep) { separator_ = std::move(sep); }
    const std::string& separator() const { return separator_; }

    void set_show_background(bool show) { show_background_ = show; }
    bool show_background() const { return show_background_; }
 
    void paint(canvas::Canvas& canvas) override;
    void on_mouse_down(Point pos) override;
    bool wants_mouse_input() const override { return true; }
 
    float intrinsic_height() const override { return 32.0f; }
 
private:
    std::vector<Item> items_;
    std::string separator_ = "/";
    bool show_background_ = true;
 
    int item_at_position(Point pos) const;
};
 
} // namespace pulp::view