Add git: open modified files action (#32347)

Ported over a vscode/cursor command that I like using : )

Release Notes:

- Added "open modified files" command

assets/keymaps/default-linux.json

@@ -115,6 +115,7 @@
       "ctrl-\"": "editor::ExpandAllDiffHunks",
       "ctrl-i": "editor::ShowSignatureHelp",
       "alt-g b": "git::Blame",
+      "alt-g m": "git::OpenModifiedFiles",
       "menu": "editor::OpenContextMenu",
       "shift-f10": "editor::OpenContextMenu",
       "ctrl-shift-e": "editor::ToggleEditPrediction",

assets/keymaps/default-macos.json

@@ -139,6 +139,7 @@
       "cmd-'": "editor::ToggleSelectedDiffHunks",
       "cmd-\"": "editor::ExpandAllDiffHunks",
       "cmd-alt-g b": "git::Blame",
+      "cmd-alt-g m": "git::OpenModifiedFiles",
       "cmd-i": "editor::ShowSignatureHelp",
       "f9": "editor::ToggleBreakpoint",
       "shift-f9": "editor::EditLogBreakpoint",

crates/git/src/git.rs

@@ -57,6 +57,7 @@ actions!(
         ExpandCommitEditor,
         GenerateCommitMessage,
         Init,
+        OpenModifiedFiles,
     ]
 );
 

crates/git_ui/src/git_ui.rs

@@ -10,7 +10,7 @@ use git::{
     status::{FileStatus, StatusCode, UnmergedStatus, UnmergedStatusCode},
 };
 use git_panel_settings::GitPanelSettings;
-use gpui::{Action, App, FocusHandle, actions};
+use gpui::{Action, App, Context, FocusHandle, Window, actions};
 use onboarding::GitOnboardingModal;
 use project_diff::ProjectDiff;
 use ui::prelude::*;
@@ -142,10 +142,41 @@ pub fn init(cx: &mut App) {
                 panel.git_init(window, cx);
             });
         });
+        workspace.register_action(|workspace, _: &git::OpenModifiedFiles, window, cx| {
+            open_modified_files(workspace, window, cx);
+        });
     })
     .detach();
 }
 
+fn open_modified_files(
+    workspace: &mut Workspace,
+    window: &mut Window,
+    cx: &mut Context<Workspace>,
+) {
+    let Some(panel) = workspace.panel::<git_panel::GitPanel>(cx) else {
+        return;
+    };
+    let modified_paths: Vec<_> = panel.update(cx, |panel, cx| {
+        let Some(repo) = panel.active_repository.as_ref() else {
+            return Vec::new();
+        };
+        let repo = repo.read(cx);
+        repo.cached_status()
+            .filter_map(|entry| {
+                if entry.status.is_modified() {
+                    repo.repo_path_to_project_path(&entry.repo_path, cx)
+                } else {
+                    None
+                }
+            })
+            .collect()
+    });
+    for path in modified_paths {
+        workspace.open_path(path, None, true, window, cx).detach();
+    }
+}
+
 pub fn git_status_icon(status: FileStatus) -> impl IntoElement {
     GitStatusIcon::new(status)
 }