| 1 | //! Request tracking for portal dialogs. |
| 2 | //! |
| 3 | //! Each portal request gets a unique handle path and can be cancelled. |
| 4 | |
| 5 | use std::collections::HashMap; |
| 6 | use std::sync::Arc; |
| 7 | use tokio::process::Child; |
| 8 | use tokio::sync::Mutex; |
| 9 | use zbus::zvariant::{ObjectPath, OwnedObjectPath, Value}; |
| 10 | use zbus::{interface, fdo}; |
| 11 | |
| 12 | /// A pending file chooser request. |
| 13 | pub struct PendingRequest { |
| 14 | /// The child process running garfield. |
| 15 | pub child: Child, |
| 16 | /// Whether the request has been cancelled. |
| 17 | pub cancelled: bool, |
| 18 | } |
| 19 | |
| 20 | /// Manages pending requests. |
| 21 | #[derive(Clone, Default)] |
| 22 | pub struct RequestManager { |
| 23 | requests: Arc<Mutex<HashMap<OwnedObjectPath, PendingRequest>>>, |
| 24 | } |
| 25 | |
| 26 | impl RequestManager { |
| 27 | pub fn new() -> Self { |
| 28 | Self::default() |
| 29 | } |
| 30 | |
| 31 | /// Add a new pending request. |
| 32 | pub async fn add(&self, handle: OwnedObjectPath, child: Child) { |
| 33 | let mut requests = self.requests.lock().await; |
| 34 | requests.insert(handle, PendingRequest { |
| 35 | child, |
| 36 | cancelled: false, |
| 37 | }); |
| 38 | } |
| 39 | |
| 40 | /// Remove a request and return it. |
| 41 | pub async fn remove(&self, handle: &ObjectPath<'_>) -> Option<PendingRequest> { |
| 42 | let mut requests = self.requests.lock().await; |
| 43 | requests.remove(&handle.to_owned()) |
| 44 | } |
| 45 | |
| 46 | /// Cancel a request by killing the child process. |
| 47 | pub async fn cancel(&self, handle: &ObjectPath<'_>) -> bool { |
| 48 | let mut requests = self.requests.lock().await; |
| 49 | if let Some(request) = requests.get_mut(&handle.to_owned()) { |
| 50 | request.cancelled = true; |
| 51 | let _ = request.child.kill().await; |
| 52 | true |
| 53 | } else { |
| 54 | false |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | /// Check if a request was cancelled. |
| 59 | #[allow(dead_code)] |
| 60 | pub async fn is_cancelled(&self, handle: &ObjectPath<'_>) -> bool { |
| 61 | let requests = self.requests.lock().await; |
| 62 | requests.get(&handle.to_owned()) |
| 63 | .map(|r| r.cancelled) |
| 64 | .unwrap_or(false) |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /// Request object that can be exported on D-Bus for cancellation. |
| 69 | pub struct Request { |
| 70 | handle: OwnedObjectPath, |
| 71 | manager: RequestManager, |
| 72 | } |
| 73 | |
| 74 | impl Request { |
| 75 | pub fn new(handle: OwnedObjectPath, manager: RequestManager) -> Self { |
| 76 | Self { handle, manager } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | #[interface(name = "org.freedesktop.impl.portal.Request")] |
| 81 | impl Request { |
| 82 | /// Close/cancel the request. |
| 83 | async fn close(&self) -> fdo::Result<()> { |
| 84 | // Log with backtrace info |
| 85 | tracing::warn!("Close() called on request: {}", self.handle); |
| 86 | let cancelled = self.manager.cancel(&self.handle.as_ref()).await; |
| 87 | tracing::warn!("Cancel result: {} (true = child was killed)", cancelled); |
| 88 | Ok(()) |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | /// Response codes for portal dialogs. |
| 93 | #[repr(u32)] |
| 94 | pub enum ResponseCode { |
| 95 | /// User accepted the dialog. |
| 96 | Success = 0, |
| 97 | /// User cancelled the dialog. |
| 98 | Cancelled = 1, |
| 99 | /// An error occurred. |
| 100 | Error = 2, |
| 101 | } |
| 102 | |
| 103 | /// Build response results for file chooser. |
| 104 | pub fn build_file_chooser_response( |
| 105 | paths: Vec<String>, |
| 106 | ) -> HashMap<String, Value<'static>> { |
| 107 | use zbus::zvariant::Array; |
| 108 | |
| 109 | let mut results = HashMap::new(); |
| 110 | |
| 111 | // Convert paths to file:// URIs as a proper string array (as) |
| 112 | let uris: Vec<String> = paths |
| 113 | .into_iter() |
| 114 | .map(|p| format!("file://{}", p)) |
| 115 | .collect(); |
| 116 | |
| 117 | // Create array with proper 's' (string) signature |
| 118 | let uri_array = Array::from(uris); |
| 119 | results.insert("uris".to_string(), Value::Array(uri_array)); |
| 120 | results |
| 121 | } |
| 122 |