Add system clipboard yank and paste commands

This commit adds six new commands to interact with system clipboard:
- clipboard-yank
- clipboard-yank-join
- clipboard-paste-after
- clipboard-paste-before
- clipboard-paste-replace
- show-clipboard-provider

System clipboard provider is detected by checking a few environment
variables and executables. Currently only built-in detection is
supported.

`clipboard-yank` will only yank the "main" selection, which is currently the first
one. This will need to be revisited later.

Closes https://github.com/helix-editor/helix/issues/76

1 files changed, 5 insertions, 1 deletions

diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 35a547ad..5d18030a 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -1,3 +1,4 @@
+use crate::clipboard::{get_clipboard_provider, ClipboardProvider};
 use crate::{
     theme::{self, Theme},
     tree::Tree,
@@ -14,9 +15,10 @@ use slotmap::SlotMap;
 
 use anyhow::Error;
 
+use helix_core::Position;
+
 pub use helix_core::diagnostic::Severity;
 pub use helix_core::register::Registers;
-use helix_core::Position;
 
 #[derive(Debug)]
 pub struct Editor {
@@ -27,6 +29,7 @@ pub struct Editor {
     pub registers: Registers,
     pub theme: Theme,
     pub language_servers: helix_lsp::Registry,
+    pub clipboard_provider: Box<dyn ClipboardProvider>,
 
     pub syn_loader: Arc<syntax::Loader>,
     pub theme_loader: Arc<theme::Loader>,
@@ -62,6 +65,7 @@ impl Editor {
             syn_loader: config_loader,
             theme_loader: themes,
             registers: Registers::default(),
+            clipboard_provider: get_clipboard_provider(),
             status_msg: None,
         }
     }