feat(linux): open and save dialogs through xdg-desktop-portal (#1176)

On Linux, open and save dialogs were always the in-process GTK3 file chooser, even on KDE Plasma, because tauri-plugin-dialog defaults to its gtk3 feature. It now uses the xdg-portal feature, so dialogs go through xdg-desktop-portal and show the desktop's own chooser; without a portal, rfd falls back to zenity. Only Linux and the BSDs change; macOS and Windows dialogs are the same. Message, ask and confirm boxes are drawn by the app and don't use the plugin.

Co-authored-by: pcastro93 <2058578+pcastro93@users.noreply.github.com>

Cargo.lock

@@ -167,6 +167,27 @@ version = "0.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3fb67a6e08acf24fdeccbac2cb6ac4305825bd1f117462e0e6f2f193345ad56"
 
+[[package]]
+name = "ashpd"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f3f79755c74fd155000314eb349864caa787c6592eace6c6882dad873d9c39"
+dependencies = [
+ "enumflags2",
+ "futures-channel",
+ "futures-util",
+ "rand 0.9.5",
+ "raw-window-handle",
+ "serde",
+ "serde_repr",
+ "tokio",
+ "url",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "zbus",
+]
+
 [[package]]
 name = "ast-grep-core"
 version = "0.40.1"
@@ -1807,6 +1828,15 @@ dependencies = [
  "syn 3.0.9",
 ]
 
+[[package]]
+name = "dlib"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab8ecd87370524b461f8557c119c405552c396ed91fc0a8eec68679eab26f94a"
+dependencies = [
+ "libloading",
+]
+
 [[package]]
 name = "dlopen2"
 version = "0.8.2"
@@ -4123,7 +4153,7 @@ version = "0.1.36"
 dependencies = [
  "ide-core",
  "ide-run",
- "quick-xml",
+ "quick-xml 0.42.0",
  "serde",
  "serde_json",
  "specta",
@@ -4517,7 +4547,7 @@ dependencies = [
  "libc",
  "parking_lot",
  "portable-pty",
- "quick-xml",
+ "quick-xml 0.42.0",
  "serde",
  "serde_json",
  "specta",
@@ -6668,7 +6698,7 @@ checksum = "65dca778f41c79ebbe8b2b2139fee86f01b766b67130d108c7c2b8ffbd949f77"
 dependencies = [
  "base64 0.23.1",
  "indexmap 2.14.2",
- "quick-xml",
+ "quick-xml 0.42.0",
  "serde",
  "time",
 ]
@@ -6713,6 +6743,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "pollster"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f3a9f18d041e6d0e102a0a46750538147e5e8992d3b4873aaafee2520b00ce3"
+
 [[package]]
 name = "poly1305"
 version = "0.9.1"
@@ -6973,6 +7009,15 @@ version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
+[[package]]
+name = "quick-xml"
+version = "0.41.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e660451e55124f798a69a5af3f49ccfbefbd41910eefd25caf2393e1f3473ec1"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.42.0"
@@ -7250,18 +7295,18 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a15ad77d9e70a92437d8f74c35d99b4e4691128df018833e99f90bcd36152672"
 dependencies = [
+ "ashpd",
  "block2 0.6.2",
  "dispatch2",
- "glib-sys",
- "gobject-sys",
- "gtk-sys",
  "js-sys",
  "log",
  "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
  "objc2-core-foundation",
  "objc2-foundation 0.3.2",
+ "pollster",
  "raw-window-handle",
+ "urlencoding",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
@@ -7692,6 +7737,12 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -9437,6 +9488,7 @@ dependencies = [
  "signal-hook-registry",
  "socket2",
  "tokio-macros",
+ "tracing",
  "windows-sys 0.61.2",
 ]
 
@@ -10773,6 +10825,66 @@ dependencies = [
  "wasmtime",
 ]
 
+[[package]]
+name = "wayland-backend"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38a91b4eaddff87b1cd1074985e3713da4af2c49742d1b356b2c01670a67a078"
+dependencies = [
+ "cc",
+ "downcast-rs",
+ "rustix",
+ "scoped-tls",
+ "smallvec",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-client"
+version = "0.31.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3c36a0f861ad76d0901f2800b46321410d9f73f2ea88aac0650d86c32688073"
+dependencies = [
+ "bitflags 2.13.2",
+ "rustix",
+ "wayland-backend",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-protocols"
+version = "0.32.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23d0c813de3daa2ed6520af85a3bd49b0e722a3078506899aa9686fea58dc4b6"
+dependencies = [
+ "bitflags 2.13.2",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-scanner"
+version = "0.31.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "338e30461b3a2b67d70eb30a6d89f8e0c93a833e07d2ae89085cd070c4a00ac0"
+dependencies = [
+ "proc-macro2",
+ "quick-xml 0.41.0",
+ "quote",
+]
+
+[[package]]
+name = "wayland-sys"
+version = "0.31.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8eab23fefc9e41f8e841df4a9c707e8a8c4ed26e944ef69297184de2785e3be"
+dependencies = [
+ "dlib",
+ "log",
+ "pkg-config",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.106"
@@ -11597,6 +11709,7 @@ dependencies = [
  "rustix",
  "serde",
  "serde_repr",
+ "tokio",
  "tracing",
  "uds_windows",
  "uuid",
@@ -11823,6 +11936,7 @@ dependencies = [
  "endi",
  "enumflags2",
  "serde",
+ "url",
  "winnow 1.0.4",
  "zcheapstr",
  "zvariant_derive",

src-tauri/Cargo.toml

@@ -16,7 +16,7 @@ dunce.workspace = true
 [dependencies]
 tauri = { version = "2", features = [] }
 tauri-plugin-opener = "2"
-tauri-plugin-dialog = "2"
+tauri-plugin-dialog = { version = "2", default-features = false, features = ["xdg-portal"] }
 tauri-plugin-mcp-bridge = "0.13"
 tauri-plugin-window-state = "2"
 tauri-plugin-single-instance = "2"