inline assistant: Allow to attach images from clipboard (#32087)

Noticed while working on #31848 that we do not support pasting images as
context in the inline assistant

Release Notes:

- agent: Add support for attaching images as context from clipboard in
the inline assistant

crates/agent/src/active_thread.rs

@@ -1518,31 +1518,7 @@ impl ActiveThread {
     }
 
     fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
-        let images = cx
-            .read_from_clipboard()
-            .map(|item| {
-                item.into_entries()
-                    .filter_map(|entry| {
-                        if let ClipboardEntry::Image(image) = entry {
-                            Some(image)
-                        } else {
-                            None
-                        }
-                    })
-                    .collect::<Vec<_>>()
-            })
-            .unwrap_or_default();
-
-        if images.is_empty() {
-            return;
-        }
-        cx.stop_propagation();
-
-        self.context_store.update(cx, |store, cx| {
-            for image in images {
-                store.add_image_instance(Arc::new(image), cx);
-            }
-        });
+        attach_pasted_images_as_context(&self.context_store, cx);
     }
 
     fn cancel_editing_message(
@@ -3653,6 +3629,38 @@ pub(crate) fn open_context(
     }
 }
 
+pub(crate) fn attach_pasted_images_as_context(
+    context_store: &Entity<ContextStore>,
+    cx: &mut App,
+) -> bool {
+    let images = cx
+        .read_from_clipboard()
+        .map(|item| {
+            item.into_entries()
+                .filter_map(|entry| {
+                    if let ClipboardEntry::Image(image) = entry {
+                        Some(image)
+                    } else {
+                        None
+                    }
+                })
+                .collect::<Vec<_>>()
+        })
+        .unwrap_or_default();
+
+    if images.is_empty() {
+        return false;
+    }
+    cx.stop_propagation();
+
+    context_store.update(cx, |store, cx| {
+        for image in images {
+            store.add_image_instance(Arc::new(image), cx);
+        }
+    });
+    true
+}
+
 fn open_editor_at_position(
     project_path: project::ProjectPath,
     target_position: Point,

crates/agent/src/inline_prompt_editor.rs

@@ -13,6 +13,7 @@ use assistant_context_editor::language_model_selector::ToggleModelSelector;
 use client::ErrorExt;
 use collections::VecDeque;
 use db::kvp::Dismissable;
+use editor::actions::Paste;
 use editor::display_map::EditorMargins;
 use editor::{
     ContextMenuOptions, Editor, EditorElement, EditorEvent, EditorMode, EditorStyle, MultiBuffer,
@@ -99,6 +100,7 @@ impl<T: 'static> Render for PromptEditor<T> {
 
         v_flex()
             .key_context("PromptEditor")
+            .capture_action(cx.listener(Self::paste))
             .bg(cx.theme().colors().editor_background)
             .block_mouse_except_scroll()
             .gap_0p5()
@@ -303,6 +305,10 @@ impl<T: 'static> PromptEditor<T> {
         self.editor.read(cx).text(cx)
     }
 
+    fn paste(&mut self, _: &Paste, _window: &mut Window, cx: &mut Context<Self>) {
+        crate::active_thread::attach_pasted_images_as_context(&self.context_store, cx);
+    }
+
     fn toggle_rate_limit_notice(
         &mut self,
         _: &ClickEvent,

crates/agent/src/message_editor.rs

@@ -24,8 +24,8 @@ use fs::Fs;
 use futures::future::Shared;
 use futures::{FutureExt as _, future};
 use gpui::{
-    Animation, AnimationExt, App, ClipboardEntry, Entity, EventEmitter, Focusable, Subscription,
-    Task, TextStyle, WeakEntity, linear_color_stop, linear_gradient, point, pulsating_between,
+    Animation, AnimationExt, App, Entity, EventEmitter, Focusable, Subscription, Task, TextStyle,
+    WeakEntity, linear_color_stop, linear_gradient, point, pulsating_between,
 };
 use language::{Buffer, Language, Point};
 use language_model::{
@@ -432,31 +432,7 @@ impl MessageEditor {
     }
 
     fn paste(&mut self, _: &Paste, _: &mut Window, cx: &mut Context<Self>) {
-        let images = cx
-            .read_from_clipboard()
-            .map(|item| {
-                item.into_entries()
-                    .filter_map(|entry| {
-                        if let ClipboardEntry::Image(image) = entry {
-                            Some(image)
-                        } else {
-                            None
-                        }
-                    })
-                    .collect::<Vec<_>>()
-            })
-            .unwrap_or_default();
-
-        if images.is_empty() {
-            return;
-        }
-        cx.stop_propagation();
-
-        self.context_store.update(cx, |store, cx| {
-            for image in images {
-                store.add_image_instance(Arc::new(image), cx);
-            }
-        });
+        crate::active_thread::attach_pasted_images_as_context(&self.context_store, cx);
     }
 
     fn handle_review_click(&mut self, window: &mut Window, cx: &mut Context<Self>) {