Show and hide individual sections of left panel

CHANGELOG.md

@@ -4,6 +4,7 @@
 ### ✨ Features
 - Added `FileDialog::take_selected` as an alternative to `FileDialog::selected` [#52](https://github.com/fluxxcode/egui-file-dialog/pull/52)
 - Added `FileDialog::show_left_panel` to show or hide the left panel with the shortcut directories such as “Home”, “Documents”, etc. [#54](https://github.com/fluxxcode/egui-file-dialog/pull/54)
+- Added `FileDialog::show_places`, `FileDialog::show_devices` and `FileDialog::show_removable_devices` to show or hide individual section of the left panel [#57](https://github.com/fluxxcode/egui-file-dialog/pull/57)
 
 ### 🔧 Changes
 - Cleanup and restructure `FileDialog` UI methods [#56](https://github.com/fluxxcode/egui-file-dialog/pull/56)

src/file_dialog.rs

@@ -129,6 +129,12 @@ pub struct FileDialog {
     /// If the sidebar with the shortcut directories such as
     /// “Home”, “Documents” etc. should be visible.
     show_left_panel: bool,
+    /// If the Places section in the left sidebar should be visible.
+    show_places: bool,
+    /// If the Devices section in the left sidebar should be visible.
+    show_devices: bool,
+    /// If the Removable Devices section in the left sidebar should be visible.
+    show_removable_devices: bool,
 
     /// The dialog that is shown when the user wants to create a new directory.
     create_directory_dialog: CreateDirectoryDialog,
@@ -192,6 +198,9 @@ impl FileDialog {
             window_title_bar: true,
 
             show_left_panel: true,
+            show_places: true,
+            show_devices: true,
+            show_removable_devices: true,
 
             create_directory_dialog: CreateDirectoryDialog::new(),
 
@@ -453,6 +462,33 @@ impl FileDialog {
         self
     }
 
+    /// Sets if the "Places" section should be visible in the left sidebar.
+    /// The Places section contains the user directories such as Home or Documents.
+    ///
+    /// Has no effect when `FileDialog::show_left_panel` is disabled.
+    pub fn show_places(mut self, show_places: bool) -> Self {
+        self.show_places = show_places;
+        self
+    }
+
+    /// Sets if the "Devices" section should be visible in the left sidebar.
+    /// The Devices section contains the non removable system disks.
+    ///
+    /// Has no effect when `FileDialog::show_left_panel` is disabled.
+    pub fn show_devices(mut self, show_devices: bool) -> Self {
+        self.show_devices = show_devices;
+        self
+    }
+
+    /// Sets if the "Removable Devices" section should be visible in the left sidebar.
+    /// The Removable Devices section contains the removable disks like USB disks.
+    ///
+    /// Has no effect when `FileDialog::show_left_panel` is disabled.
+    pub fn show_removable_devices(mut self, show_removable_devices: bool) -> Self {
+        self.show_removable_devices = show_removable_devices;
+        self
+    }
+
     // -------------------------------------------------
     // Getter:
 
@@ -733,29 +769,43 @@ impl FileDialog {
     }
 
     /// Updates the left panel of the dialog. Including the list of the user directories (Places)
-    /// and system disks.
+    /// and system disks (Devices, Removable Devices).
     fn ui_update_left_panel(&mut self, ui: &mut egui::Ui) {
         ui.with_layout(egui::Layout::top_down_justified(egui::Align::LEFT), |ui| {
             egui::containers::ScrollArea::vertical()
                 .auto_shrink([false, false])
                 .show(ui, |ui| {
-                    ui.add_space(ui.ctx().style().spacing.item_spacing.y * 2.0);
+                    let mut spacing = ui.ctx().style().spacing.item_spacing.y * 2.0;
 
-                    self.ui_update_user_directories(ui);
+                    if self.show_places && self.ui_update_user_directories(ui, spacing) {
+                        spacing = ui.ctx().style().spacing.item_spacing.y * 4.0;
+                    }
 
                     let disks = std::mem::take(&mut self.system_disks);
 
-                    self.ui_update_devices(ui, &disks);
-                    self.ui_update_removable_devices(ui, &disks);
+                    if self.show_devices && self.ui_update_devices(ui, spacing, &disks) {
+                        spacing = ui.ctx().style().spacing.item_spacing.y * 4.0;
+                    }
+
+                    if self.show_removable_devices
+                        && self.ui_update_removable_devices(ui, spacing, &disks)
+                    {
+                        // Add this when we add a new section after removable devices
+                        // spacing = ui.ctx().style().spacing.item_spacing.y * 4.0;
+                    }
 
                     self.system_disks = disks;
                 });
         });
     }
 
     /// Updates the list of the user directories (Places).
-    fn ui_update_user_directories(&mut self, ui: &mut egui::Ui) {
+    ///
+    /// Returns true if at least one directory was included in the list and the
+    /// heading is visible. If no directory was listed, false is returned.
+    fn ui_update_user_directories(&mut self, ui: &mut egui::Ui, spacing: f32) -> bool {
         if let Some(dirs) = self.user_directories.clone() {
+            ui.add_space(spacing);
             ui.label("Places");
 
             if let Some(path) = dirs.home_dir() {
@@ -815,31 +865,58 @@ impl FileDialog {
                     let _ = self.load_directory(path);
                 }
             }
+
+            return true;
         }
+
+        false
     }
 
     /// Updates the list of devices like system disks
-    fn ui_update_devices(&mut self, ui: &mut egui::Ui, disks: &Disks) {
+    ///
+    /// Returns true if at least one device was included in the list and the
+    /// heading is visible. If no device was listed, false is returned.
+    fn ui_update_devices(&mut self, ui: &mut egui::Ui, spacing: f32, disks: &Disks) -> bool {
+        let mut visible = false;
+
         for (i, disk) in disks.iter().filter(|x| !x.is_removable()).enumerate() {
             if i == 0 {
-                ui.add_space(ui.style().spacing.item_spacing.y * 4.0);
+                ui.add_space(spacing);
                 ui.label("Devices");
+
+                visible = true;
             }
 
             self.ui_update_device_entry(ui, disk);
         }
+
+        visible
     }
 
     /// Updates the list of removable devices like USB drives
-    fn ui_update_removable_devices(&mut self, ui: &mut egui::Ui, disks: &Disks) {
+    ///
+    /// Returns true if at least one device was included in the list and the
+    /// heading is visible. If no device was listed, false is returned.
+    fn ui_update_removable_devices(
+        &mut self,
+        ui: &mut egui::Ui,
+        spacing: f32,
+        disks: &Disks,
+    ) -> bool {
+        let mut visible = false;
+
         for (i, disk) in disks.iter().filter(|x| x.is_removable()).enumerate() {
             if i == 0 {
-                ui.add_space(ui.style().spacing.item_spacing.y * 4.0);
+                ui.add_space(spacing);
                 ui.label("Removable Devices");
+
+                visible = true;
             }
 
             self.ui_update_device_entry(ui, disk);
         }
+
+        visible
     }
 
     /// Updates a device entry of a device list like "Devices" or "Removable Devices".