From 51a75e9cc1935456b6372e055f3b3fa79cfe936a Mon Sep 17 00:00:00 2001
From: hippoz <10706925-hippoz@users.noreply.gitlab.com>
Date: Fri, 29 Jul 2022 03:03:31 +0300
Subject: [PATCH] add breadcrumb bar in the topbar

---
 src/AppWidget.cpp     | 11 +++++++++++
 src/DirectoryView.cpp |  2 +-
 src/DirectoryView.hpp |  3 +++
 src/TopBar.cpp        | 32 ++++++++++++++++++++++++++------
 src/TopBar.hpp        | 19 +++++++++++++------
 5 files changed, 54 insertions(+), 13 deletions(-)

diff --git a/src/AppWidget.cpp b/src/AppWidget.cpp
index 3c3a640..51b1a99 100644
--- a/src/AppWidget.cpp
+++ b/src/AppWidget.cpp
@@ -3,6 +3,7 @@
 #include "BoxLayout.hpp"
 #include "DirectoryView.hpp"
 #include "TopBar.hpp"
+#include <filesystem>
 
 void AppWidget::on_init() {
     auto layout = set_layout<Raven::BoxLayout>(Raven::Direction::Vertical);
@@ -12,6 +13,14 @@ void AppWidget::on_init() {
     auto top_bar = add<TopBar>();
     auto directory_view = add<DirectoryView>();
 
+    directory_view->on_path_update = [top_bar](std::filesystem::path where) {
+        top_bar->breadcrumb_set(where);
+    };
+
+    top_bar->on_navigate = [directory_view](std::filesystem::path where) {
+        directory_view->navigate(where);
+    };
+
     top_bar->on_action = [directory_view](TopBar::Action action) {
         if (action == TopBar::Action::Back) {
             directory_view->go_back();
@@ -24,5 +33,7 @@ void AppWidget::on_init() {
         }
     };
 
+    directory_view->navigate_home();
+
     set_did_init(true);
 }
diff --git a/src/DirectoryView.cpp b/src/DirectoryView.cpp
index 4cf3129..cfd9e1c 100644
--- a/src/DirectoryView.cpp
+++ b/src/DirectoryView.cpp
@@ -6,6 +6,7 @@ DirectoryView::~DirectoryView() {}
 
 void DirectoryView::set_current_path(std::filesystem::path path) {
     m_current_path = path;
+    on_path_update(m_current_path);
 
     // microtasks defer execution of the callback until all external events are processed.
     // if they're not used here and set_current_path() is called in a click or hover handler,
@@ -34,7 +35,6 @@ void DirectoryView::on_init() {
 
     m_target = make_target();
     m_target->set_layout<Raven::DocumentLayout>(16.0);
-    navigate_home();
     set_did_init(true);
 }
 
diff --git a/src/DirectoryView.hpp b/src/DirectoryView.hpp
index 30909ce..be62683 100644
--- a/src/DirectoryView.hpp
+++ b/src/DirectoryView.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <functional>
 #include <stack>
 #include <string>
 #include <filesystem>
@@ -22,6 +23,8 @@ public:
     void go_forward();
     void navigate_home();
     void navigate_parent_directory();
+
+    std::function<void(std::filesystem::path)> on_path_update { [](std::filesystem::path _){} };
 protected:
     void set_current_path(std::filesystem::path path);
 
diff --git a/src/TopBar.cpp b/src/TopBar.cpp
index 5d507bc..6c7c9d0 100644
--- a/src/TopBar.cpp
+++ b/src/TopBar.cpp
@@ -1,9 +1,10 @@
 #include "TopBar.hpp"
-#include "raven/Styles.hpp"
-#include "raven/Box.hpp"
-#include "raven/BoxLayout.hpp"
-#include "raven/SvgWidget.hpp"
-#include "raven/RowLayout.hpp"
+#include "Styles.hpp"
+#include "Box.hpp"
+#include "BoxLayout.hpp"
+#include "SvgWidget.hpp"
+#include "RowLayout.hpp"
+#include "Button.hpp"
 
 void TopBar::on_init() {
     set_style(&Raven::accent_widget_style);
@@ -22,8 +23,12 @@ void TopBar::on_init() {
     auto home_button = add<Raven::SvgWidget>("/usr/share/icons/Papirus/24x24/actions/go-home.svg");
     home_button->set_style(&Raven::default_button_style);
 
+    m_breadcrumbs = add<Raven::Widget>();
+    m_breadcrumbs->set_style(&Raven::accent_widget_style);
+    auto breadcrumbs_layout = m_breadcrumbs->set_layout<Raven::BoxLayout>(Raven::Direction::Horizontal);
+    breadcrumbs_layout->set_spacing(8);
+
     back_button->on_click = [this, back_button]() {
-        std::cout << back_button->rect().width() << ", " << back_button->rect().height() << std::endl;
         on_action(Action::Back);
     };
     forward_button->on_click = [this]() {
@@ -38,3 +43,18 @@ void TopBar::on_init() {
 
     set_did_init(true);
 }
+
+void TopBar::breadcrumb_set(std::filesystem::path path) {
+    window()->queue_microtask([this, path]() {
+        m_breadcrumbs->clear_children();
+
+        std::filesystem::path current_path;
+        for (std::filesystem::path::iterator i = path.begin(); i != path.end(); i++) {
+            auto button = m_breadcrumbs->add<Raven::Button>(*i == "/" ? "/" : i->filename());
+            current_path /= *i;
+            button->on_click = [this, current_path]() {
+                on_navigate(current_path);
+            };
+        }
+    });
+}
diff --git a/src/TopBar.hpp b/src/TopBar.hpp
index e1f42e2..cd1c974 100644
--- a/src/TopBar.hpp
+++ b/src/TopBar.hpp
@@ -1,22 +1,29 @@
 #pragma once
 
 #include "Widget.hpp"
+#include <filesystem>
 #include <functional>
+#include <memory>
 
 class TopBar : public Raven::Widget {
 public:
-enum class Action {
-    Back = 0,
-    Forward,
-    Home,
-    ParentDirectory
-};
+    enum class Action {
+        Back = 0,
+        Forward,
+        Home,
+        ParentDirectory
+    };
 public:
     TopBar()
         : Raven::Widget() {}
 
+    void breadcrumb_set(std::filesystem::path path);
+
     std::function<void(Action)> on_action { [](Action _){} };
+    std::function<void(std::filesystem::path)> on_navigate { [](std::filesystem::path _){} };
 protected:
     void on_init();
 private:
+    std::shared_ptr<Raven::Widget> m_breadcrumbs;
+    std::filesystem::path m_breadcrumb_path { "/" };
 };