Auto merge of #25869 - iulianR:issue-23057-tinifiledialogs, r=jdm

Move tinyfiledialog call from script to embedder

<!-- Please describe your changes on the following line: -->

PR is based on work started in #23651. I rebased on top of master and addressed review comments. Handling the `PromptPermission` message in `libsimpleservo` is probably not ideal. Looking forward to make more changes, just let me know how I should proceed.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #23057 (GitHub issue number if applicable)

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

1 files changed, 50 insertions, 50 deletions

diff --git a/components/script/dom/permissions.rs b/components/script/dom/permissions.rs
index cb91fb692f9..37887f60773 100644
--- a/components/script/dom/permissions.rs
+++ b/components/script/dom/permissions.rs
@@ -19,19 +19,13 @@ use crate::dom::promise::Promise;
 use crate::realms::{AlreadyInRealm, InRealm};
 use crate::script_runtime::JSContext;
 use dom_struct::dom_struct;
+use embedder_traits::{self, EmbedderMsg, PermissionPrompt, PermissionRequest};
+use ipc_channel::ipc;
 use js::conversions::ConversionResult;
 use js::jsapi::JSObject;
 use js::jsval::{ObjectValue, UndefinedValue};
 use servo_config::pref;
 use std::rc::Rc;
-#[cfg(target_os = "linux")]
-use tinyfiledialogs::{self, MessageBoxIcon, YesNo};
-
-#[cfg(target_os = "linux")]
-const DIALOG_TITLE: &'static str = "Permission request dialog";
-const NONSECURE_DIALOG_MESSAGE: &'static str = "feature is only safe to use in secure context,\
- but servo can't guarantee\n that the current context is secure. Do you want to proceed and grant permission?";
-const REQUEST_DIALOG_MESSAGE: &'static str = "Do you want to grant permission for";
 
 pub trait PermissionAlgorithm {
     type Descriptor;
@@ -143,7 +137,6 @@ impl Permissions {
                         // (Revoke) Step 3.
                         let globalscope = self.global();
                         globalscope
-                            .as_window()
                             .permission_state_invocation_results()
                             .borrow_mut()
                             .remove(&root_desc.name.to_string());
@@ -176,7 +169,6 @@ impl Permissions {
                         // (Revoke) Step 3.
                         let globalscope = self.global();
                         globalscope
-                            .as_window()
                             .permission_state_invocation_results()
                             .borrow_mut()
                             .remove(&root_desc.name.to_string());
@@ -259,17 +251,13 @@ impl PermissionAlgorithm for Permissions {
             // Step 3.
             PermissionState::Prompt => {
                 let perm_name = status.get_query();
-
-                let globalscope = GlobalScope::current().expect("No current global object");
+                let prompt =
+                    PermissionPrompt::Request(embedder_traits::PermissionName::from(perm_name));
 
                 // https://w3c.github.io/permissions/#request-permission-to-use (Step 3 - 4)
-                let state = prompt_user(
-                    &format!("{} {} ?", REQUEST_DIALOG_MESSAGE, perm_name.clone()),
-                    globalscope.is_headless(),
-                );
-
+                let globalscope = GlobalScope::current().expect("No current global object");
+                let state = prompt_user_from_embedder(prompt, &globalscope);
                 globalscope
-                    .as_window()
                     .permission_state_invocation_results()
                     .borrow_mut()
                     .insert(perm_name.to_string(), state);
@@ -292,7 +280,7 @@ pub fn get_descriptor_permission_state(
     env_settings_obj: Option<&GlobalScope>,
 ) -> PermissionState {
     // Step 1.
-    let settings = match env_settings_obj {
+    let globalscope = match env_settings_obj {
         Some(env_settings_obj) => DomRoot::from_ref(env_settings_obj),
         None => GlobalScope::current().expect("No current global object"),
     };
@@ -308,22 +296,20 @@ pub fn get_descriptor_permission_state(
         if pref!(dom.permissions.testing.allowed_in_nonsecure_contexts) {
             PermissionState::Granted
         } else {
-            settings
-                .as_window()
+            globalscope
                 .permission_state_invocation_results()
                 .borrow_mut()
                 .remove(&permission_name.to_string());
 
-            prompt_user(
-                &format!("The {} {}", permission_name, NONSECURE_DIALOG_MESSAGE),
-                settings.is_headless(),
+            prompt_user_from_embedder(
+                PermissionPrompt::Insecure(embedder_traits::PermissionName::from(permission_name)),
+                &globalscope,
             )
         }
     };
 
     // Step 3.
-    if let Some(prev_result) = settings
-        .as_window()
+    if let Some(prev_result) = globalscope
         .permission_state_invocation_results()
         .borrow()
         .get(&permission_name.to_string())
@@ -332,8 +318,7 @@ pub fn get_descriptor_permission_state(
     }
 
     // Store the invocation result
-    settings
-        .as_window()
+    globalscope
         .permission_state_invocation_results()
         .borrow_mut()
         .insert(permission_name.to_string(), state);
@@ -342,28 +327,6 @@ pub fn get_descriptor_permission_state(
     state
 }
 
-#[cfg(target_os = "linux")]
-fn prompt_user(message: &str, headless: bool) -> PermissionState {
-    if headless {
-        return PermissionState::Denied;
-    }
-    match tinyfiledialogs::message_box_yes_no(
-        DIALOG_TITLE,
-        message,
-        MessageBoxIcon::Question,
-        YesNo::No,
-    ) {
-        YesNo::Yes => PermissionState::Granted,
-        YesNo::No => PermissionState::Denied,
-    }
-}
-
-#[cfg(not(target_os = "linux"))]
-fn prompt_user(_message: &str, _headless: bool) -> PermissionState {
-    // TODO popup only supported on linux
-    PermissionState::Denied
-}
-
 // https://w3c.github.io/permissions/#allowed-in-non-secure-contexts
 fn allowed_in_nonsecure_contexts(permission_name: &PermissionName) -> bool {
     match *permission_name {
@@ -391,3 +354,40 @@ fn allowed_in_nonsecure_contexts(permission_name: &PermissionName) -> bool {
         PermissionName::Persistent_storage => false,
     }
 }
+
+fn prompt_user_from_embedder(prompt: PermissionPrompt, gs: &GlobalScope) -> PermissionState {
+    let (sender, receiver) = ipc::channel().expect("Failed to create IPC channel!");
+    gs.send_to_embedder(EmbedderMsg::PromptPermission(prompt, sender));
+
+    match receiver.recv() {
+        Ok(PermissionRequest::Granted) => PermissionState::Granted,
+        Ok(PermissionRequest::Denied) => PermissionState::Denied,
+        Err(e) => {
+            warn!(
+                "Failed to receive permission state from embedder ({:?}).",
+                e
+            );
+            PermissionState::Denied
+        },
+    }
+}
+
+impl From<PermissionName> for embedder_traits::PermissionName {
+    fn from(permission_name: PermissionName) -> Self {
+        match permission_name {
+            PermissionName::Geolocation => embedder_traits::PermissionName::Geolocation,
+            PermissionName::Notifications => embedder_traits::PermissionName::Notifications,
+            PermissionName::Push => embedder_traits::PermissionName::Push,
+            PermissionName::Midi => embedder_traits::PermissionName::Midi,
+            PermissionName::Camera => embedder_traits::PermissionName::Camera,
+            PermissionName::Microphone => embedder_traits::PermissionName::Microphone,
+            PermissionName::Speaker => embedder_traits::PermissionName::Speaker,
+            PermissionName::Device_info => embedder_traits::PermissionName::DeviceInfo,
+            PermissionName::Background_sync => embedder_traits::PermissionName::BackgroundSync,
+            PermissionName::Bluetooth => embedder_traits::PermissionName::Bluetooth,
+            PermissionName::Persistent_storage => {
+                embedder_traits::PermissionName::PersistentStorage
+            },
+        }
+    }
+}