vim: Command (#2951)

Release Notes:

- vim: Add v1 of command mode
([#279](https://github.com/zed-industries/community/issues/279)). The
goal was to cover 90% of what most people actually do, but it is very
incomplete. Known omissions are that ranges cannot be specified (except
that `:%s//` must always specify the % range), commands cannot take
arguments (you can `:w` but not `:w [file]`), and there is no history.
Please file feature requests on
https://github.com/zed-industries/community as you notice things that
could be better.
- `:` triggers zed's command palette. If you type a known vim command it
will run it, otherwise you get zed's normal fuzzy search. For this
release supported commands are limited to:
- - `:w[rite][!]`, `:wq[!]`, `:q[uit][!]`, `:wa[ll][!]`, `:wqa[ll][!]`,
`:qa[ll][!]`, `:[e]x[it][!]`, `:up[date]` to save/close tab(s) and
pane(s).
- - `:cq` to quit completely.
- - `:vs[plit]`, `:sp[lit]` to split vertically/horizontally
- - `:new`, `:vne[w]` to create a new file in a new pane above or to the
left
- - `:tabedit`, `:tabnew` to create a new file in a new tab.
- - `:tabn[ext]`, `:tabp[rev]` to go to previous/next tabs
- - `:tabc[lose]` to close tabs
- - `:cn[ext]`, `:cp[rev]`, `:ln[ext]`, `:lp[rev]` to go to the
next/prev diagnostics.
- - `:cc`, `:ll` to open the errors page
- - `:<number>` to jump to a line number.
- - `:$` to jump to end of file
- - `:%s/foo/bar/` (note that /g is always implied, the range must
always be %, and zed uses different regex syntax to vim)
- - `:/foo` and `:?foo` to jump to next/prev line matching foo
- - `:j[oin]`, to join the current line (no range is yet supported)
- - `:d[elete][l][p]`, to delete the current line (no range is yet
supported)
- - `:s[ort] [i]` to sort the current selection (case-insensitively)
- vim: Add `ctrl-w o` (closes everything except the current item) and
`ctrl-w n` (creates a new file in the pane above).
([#1884](https://github.com/zed-industries/community/issues/1884))
- all: Add a "Discard" option to prompt when saving a file with
conflicts (previously this only appeared on close, not on save).

Internal changes:
- The Picker will now wait for pending queries before confirming (to
handle people typing `: w enter` rapidly.
- workspace::save_item and Pane::save_item are now merged together, and
the behavior controlled by `workspace::SaveIntent`.
- Many actions related to closing/saving items now take an optional
`SaveIntent`.
-

crates/editor/src/editor.rs

@@ -103,7 +103,7 @@ use sum_tree::TreeMap;
 use text::Rope;
 use theme::{DiagnosticStyle, Theme, ThemeSettings};
 use util::{post_inc, RangeExt, ResultExt, TryFutureExt};
-use workspace::{ItemNavHistory, ViewId, Workspace};
+use workspace::{ItemNavHistory, SplitDirection, ViewId, Workspace};
 
 use crate::git::diff_hunk_to_display;
 
@@ -363,6 +363,7 @@ pub fn init_settings(cx: &mut AppContext) {
 pub fn init(cx: &mut AppContext) {
     init_settings(cx);
     cx.add_action(Editor::new_file);
+    cx.add_action(Editor::new_file_in_direction);
     cx.add_action(Editor::cancel);
     cx.add_action(Editor::newline);
     cx.add_action(Editor::newline_above);
@@ -1633,6 +1634,26 @@ impl Editor {
         }
     }
 
+    pub fn new_file_in_direction(
+        workspace: &mut Workspace,
+        action: &workspace::NewFileInDirection,
+        cx: &mut ViewContext<Workspace>,
+    ) {
+        let project = workspace.project().clone();
+        if project.read(cx).is_remote() {
+            cx.propagate_action();
+        } else if let Some(buffer) = project
+            .update(cx, |project, cx| project.create_buffer("", None, cx))
+            .log_err()
+        {
+            workspace.split_item(
+                action.0,
+                Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
+                cx,
+            );
+        }
+    }
+
     pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
         self.buffer.read(cx).replica_id()
     }
@@ -7136,7 +7157,7 @@ impl Editor {
             );
         });
         if split {
-            workspace.split_item(Box::new(editor), cx);
+            workspace.split_item(SplitDirection::Right, Box::new(editor), cx);
         } else {
             workspace.add_item(Box::new(editor), cx);
         }