LibGUI: Make FilePicker's common location buttons checkable

We now use the checked state of these buttons to indicate that you are
in that specific folder. The checked state is updated automagically
no matter how you navigate the file system. :^)

2 files changed, 24 insertions, 7 deletions

diff --git a/Userland/Libraries/LibGUI/FilePicker.cpp b/Userland/Libraries/LibGUI/FilePicker.cpp
index ce7183b39e..022dfcd772 100644
--- a/Userland/Libraries/LibGUI/FilePicker.cpp
+++ b/Userland/Libraries/LibGUI/FilePicker.cpp
@@ -120,8 +120,6 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& file_
     m_view->set_column_visible(FileSystemModel::Column::Inode, true);
     m_view->set_column_visible(FileSystemModel::Column::SymlinkTarget, true);
 
-    set_path(path);
-
     m_model->register_client(*this);
 
     m_location_textbox->on_return_pressed = [this] {
@@ -225,20 +223,39 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& file_
     };
 
     auto& common_locations_frame = *widget.find_descendant_of_type_named<GUI::Frame>("common_locations_frame");
-    auto add_common_location_button = [&](auto& name, String path) {
+    auto add_common_location_button = [&](auto& name, String path) -> GUI::Button& {
         auto& button = common_locations_frame.add<GUI::Button>();
         button.set_button_style(Gfx::ButtonStyle::CoolBar);
         button.set_text_alignment(Gfx::TextAlignment::CenterLeft);
         button.set_text(move(name));
         button.set_icon(FileIconProvider::icon_for_path(path).bitmap_for_size(16));
         button.set_fixed_height(22);
+        button.set_checkable(true);
+        button.set_exclusive(true);
         button.on_click = [this, path] {
             set_path(path);
         };
+        return button;
     };
-    add_common_location_button("Home", Core::StandardPaths::home_directory());
-    add_common_location_button("Desktop", Core::StandardPaths::desktop_directory());
-    add_common_location_button("Root", "/");
+    auto& home_button = add_common_location_button("Home", Core::StandardPaths::home_directory());
+    auto& desktop_button = add_common_location_button("Desktop", Core::StandardPaths::desktop_directory());
+    auto& root_button = add_common_location_button("Root", "/");
+
+    m_model->on_complete = [&] {
+        if (m_model->root_path() == Core::StandardPaths::home_directory()) {
+            home_button.set_checked(true);
+        } else if (m_model->root_path() == Core::StandardPaths::desktop_directory()) {
+            desktop_button.set_checked(true);
+        } else if (m_model->root_path() == "/") {
+            root_button.set_checked(true);
+        } else {
+            home_button.set_checked(false);
+            desktop_button.set_checked(false);
+            root_button.set_checked(false);
+        }
+    };
+
+    set_path(path);
 }
 
 FilePicker::~FilePicker()
diff --git a/Userland/Libraries/LibGUI/FilePickerDialog.gml b/Userland/Libraries/LibGUI/FilePickerDialog.gml
index 48492e128b..3a0bfd6ac8 100644
--- a/Userland/Libraries/LibGUI/FilePickerDialog.gml
+++ b/Userland/Libraries/LibGUI/FilePickerDialog.gml
@@ -20,7 +20,7 @@
 
         @GUI::Frame {
             name: "common_locations_frame"
-            fixed_width: 80
+            fixed_width: 90
             fill_with_background_color: true
 
             layout: @GUI::VerticalBoxLayout {