dash-frontend: Application list

dash-frontend/Cargo.toml

@@ -10,3 +10,5 @@ glam = { workspace = true }
 log = { workspace = true }
 rust-embed = { workspace = true }
 chrono = "0.4.42"
+gio = "0.21.2"
+gtk = "0.18.2"

dash-frontend/assets/gui/tab/apps.xml

@@ -1,6 +1,19 @@
 <layout>
   <include src="t_tab_title.xml" />
 
+  <template name="AppEntry">
+    <Button
+      id="button" width="116" max_width="140" min_height="100" flex_grow="1"
+      flex_direction="column" overflow="visible" align_items="center" justify_content="center" gap="8">
+      <div>
+        <sprite src="${src}" src_ext="${src_ext}" width="64" height="64" />
+      </div>
+      <div align_items="center" justify_content="center">
+        <label weight="bold" text="${name}" size="12" />
+      </div>
+    </Button>
+  </template>
+
   <elements>
     <TabTitle translation="APPLICATIONS" icon="dashboard/apps.svg" />
     <!-- placeholders for now -->
@@ -17,5 +30,12 @@
         <label text="Search" color="#FFFFFF88" weight="bold" />
       </rectangle>
     </div>
+    <div
+      id="app_list_parent"
+      flex_direction="row"
+      flex_wrap="wrap"
+      justify_content="stretch"
+      gap="4"
+    />
   </elements>
 </layout>

dash-frontend/src/lib.rs

@@ -8,7 +8,7 @@ use wgui::{
 	globals::WguiGlobals,
 	i18n::Translation,
 	layout::{LayoutParams, RcLayout, WidgetID},
-	parser::{ParseDocumentParams, ParserState},
+	parser::{Fetchable, ParseDocumentParams, ParserState},
 	widget::label::WidgetLabel,
 };
 
@@ -19,6 +19,7 @@ use crate::tab::{
 
 mod assets;
 mod tab;
+mod util;
 mod various;
 
 pub struct Frontend {

dash-frontend/src/tab/apps.rs

@@ -1,10 +1,23 @@
-use wgui::parser::{ParseDocumentParams, ParserState};
+use std::{collections::HashMap, rc::Rc};
 
-use crate::tab::{Tab, TabParams, TabType};
+use wgui::{
+	components::{self, button::ComponentButton},
+	layout::WidgetPair,
+	parser::{Fetchable, ParseDocumentParams, ParserData, ParserState},
+	taffy::{self, Dimension, prelude::length},
+};
+
+use crate::{
+	tab::{Tab, TabParams, TabType},
+	util::{self, desktop_finder::DesktopEntry},
+};
 
 pub struct TabApps {
 	#[allow(dead_code)]
 	pub state: ParserState,
+
+	entries: Vec<DesktopEntry>,
+	app_list: AppList,
 }
 
 impl Tab for TabApps {
@@ -13,19 +26,106 @@ impl Tab for TabApps {
 	}
 }
 
+#[derive(Default)]
+struct AppList {
+	data: Vec<ParserData>,
+}
+
 impl TabApps {
-	pub fn new(params: TabParams) -> anyhow::Result<Self> {
-		let state = wgui::parser::parse_from_assets(
-			&ParseDocumentParams {
-				globals: params.globals.clone(),
-				path: "gui/tab/apps.xml",
-				extra: Default::default(),
-			},
-			params.layout,
-			params.listeners,
-			params.parent_id,
+	pub fn new(mut tab_params: TabParams) -> anyhow::Result<Self> {
+		let doc_params = &ParseDocumentParams {
+			globals: tab_params.globals.clone(),
+			path: "gui/tab/apps.xml",
+			extra: Default::default(),
+		};
+
+		let mut state = wgui::parser::parse_from_assets(
+			doc_params,
+			tab_params.layout,
+			tab_params.listeners,
+			tab_params.parent_id,
 		)?;
 
-		Ok(Self { state })
+		gtk::init()?;
+
+		let entries = util::desktop_finder::find_entries()?;
+
+		let app_list_parent = state.fetch_widget(&tab_params.layout.state, "app_list_parent")?;
+
+		let mut app_list = AppList::default();
+		app_list.mount_entries(&entries, &mut state, doc_params, &mut tab_params, &app_list_parent)?;
+
+		Ok(Self {
+			app_list,
+			state,
+			entries,
+		})
+	}
+}
+
+impl AppList {
+	fn mount_entry(
+		&mut self,
+		parser_state: &mut ParserState,
+		doc_params: &ParseDocumentParams,
+		params: &mut TabParams,
+		list_parent: &WidgetPair,
+		entry: &DesktopEntry,
+	) -> anyhow::Result<()> {
+		let mut template_params = HashMap::new();
+
+		// entry icon
+		template_params.insert(
+			Rc::from("src_ext"),
+			entry
+				.icon_path
+				.as_ref()
+				.map_or_else(|| Rc::from(""), |icon_path| Rc::from(icon_path.as_str())),
+		);
+
+		// entry fallback (question mark) icon
+		template_params.insert(
+			Rc::from("src"),
+			if entry.icon_path.is_none() {
+				Rc::from("dashboard/terminal.svg")
+			} else {
+				Rc::from("")
+			},
+		);
+
+		template_params.insert(Rc::from("name"), Rc::from(entry.app_name.as_str()));
+
+		let data = parser_state.parse_template(
+			doc_params,
+			"AppEntry",
+			params.layout,
+			params.listeners,
+			list_parent.id,
+			template_params,
+		)?;
+
+		let button = data.fetch_component_as::<ComponentButton>("button")?;
+		button.on_click(Box::new(move |common, evt| {
+			log::info!("click");
+			Ok(())
+		}));
+
+		self.data.push(data);
+
+		Ok(())
+	}
+
+	fn mount_entries(
+		&mut self,
+		entries: &[DesktopEntry],
+		parser_state: &mut ParserState,
+		doc_params: &ParseDocumentParams,
+		params: &mut TabParams,
+		list_parent: &WidgetPair,
+	) -> anyhow::Result<()> {
+		for entry in entries {
+			self.mount_entry(parser_state, doc_params, params, list_parent, entry)?;
+		}
+		Ok(())
 	}
 }

dash-frontend/src/tab/home.rs

@@ -1,7 +1,7 @@
 use wgui::{
 	components::button::ComponentButton,
 	i18n::Translation,
-	parser::{ParseDocumentParams, ParserState},
+	parser::{Fetchable, ParseDocumentParams, ParserState},
 	widget::label::WidgetLabel,
 };
 

dash-frontend/src/util/desktop_finder.rs

@@ -0,0 +1,129 @@
+use gio::prelude::{AppInfoExt, IconExt};
+use gtk::traits::IconThemeExt;
+
+#[derive(Debug)]
+pub struct DesktopEntry {
+	pub exec_path: String,
+	pub exec_args: Vec<String>,
+	pub app_name: String,
+	pub icon_path: Option<String>,
+	pub categories: Vec<String>,
+}
+
+pub struct EntrySearchCell {
+	pub exec_path: String,
+	pub exec_args: Vec<String>,
+	pub app_name: String,
+	pub icon_name: Option<String>,
+	pub categories: Vec<String>,
+}
+
+const CMD_BLACKLIST: [&str; 1] = [
+	"lsp-plugins", // LSP Plugins collection. They clutter the application list a lot
+];
+
+const CATEGORY_TYPE_BLACKLIST: [&str; 5] = ["GTK", "Qt", "X-XFCE", "X-Bluetooth", "ConsoleOnly"];
+
+pub fn find_entries() -> anyhow::Result<Vec<DesktopEntry>> {
+	let Some(icon_theme) = gtk::IconTheme::default() else {
+		anyhow::bail!("Failed to get current icon theme information");
+	};
+
+	let mut res = Vec::<DesktopEntry>::new();
+
+	let info = gio::AppInfo::all();
+
+	log::debug!("app entry count {}", info.len());
+
+	'outer: for app_entry in info {
+		let Some(app_entry_id) = app_entry.id() else {
+			log::warn!(
+				"failed to get desktop entry ID for application named \"{}\"",
+				app_entry.name()
+			);
+			continue;
+		};
+
+		let Some(desktop_app) = gio::DesktopAppInfo::new(&app_entry_id) else {
+			log::warn!(
+				"failed to find desktop app file from application named \"{}\"",
+				app_entry.name()
+			);
+			continue;
+		};
+
+		if desktop_app.is_nodisplay() || desktop_app.is_hidden() {
+			continue;
+		}
+
+		let Some(cmd) = desktop_app.commandline() else {
+			continue;
+		};
+
+		let name = String::from(desktop_app.name());
+
+		let exec = String::from(cmd.to_string_lossy());
+
+		for blacklisted in CMD_BLACKLIST {
+			if exec.contains(blacklisted) {
+				continue 'outer;
+			}
+		}
+
+		let (exec_path, exec_args) = match exec.split_once(" ") {
+			Some((left, right)) => (
+				String::from(left),
+				right
+					.split(" ")
+					.filter(|arg| !arg.starts_with('%')) // exclude arguments like "%f"
+					.map(String::from)
+					.collect(),
+			),
+			None => (exec, Vec::new()),
+		};
+
+		let icon_path = match desktop_app.icon() {
+			Some(icon) => {
+				if let Some(icon_str) = icon.to_string() {
+					if let Some(s_icon) = icon_theme.lookup_icon(&icon_str, 128, gtk::IconLookupFlags::GENERIC_FALLBACK) {
+						s_icon.filename().map(|p| String::from(p.to_string_lossy()))
+					} else {
+						None
+					}
+				} else {
+					None
+				}
+			}
+			None => None,
+		};
+
+		let categories: Vec<String> = match desktop_app.categories() {
+			Some(categories) => categories
+				.split(";")
+				.filter(|s| !s.is_empty())
+				.filter(|s| {
+					for b in CATEGORY_TYPE_BLACKLIST {
+						if *s == b {
+							return false;
+						}
+					}
+					true
+				})
+				.map(String::from)
+				.collect(),
+			None => Vec::new(),
+		};
+
+		let entry = DesktopEntry {
+			app_name: name,
+			categories,
+			exec_path,
+			exec_args,
+			icon_path,
+		};
+
+		res.push(entry);
+	}
+
+	Ok(res)
+}

dash-frontend/src/util/mod.rs

@@ -0,0 +1 @@
+pub mod desktop_finder;