1 files changed, 86 insertions, 0 deletions
diff --git a/src/help/help_verbs.rs b/src/help/help_verbs.rs
new file mode 100644
index 0000000..ab1f023
--- /dev/null
+++ b/src/help/help_verbs.rs
@@ -0,0 +1,86 @@
+//! this modules defines the execution of verbs on the help screen
+
+use {
+    crate::{
+        app::{
+            AppContext,
+            AppStateCmdResult,
+        },
+        browser::BrowserState,
+        command::Command,
+        conf::{self, Conf},
+        errors::ProgramError,
+        external::{self, Launchable},
+        screens::Screen,
+        task_sync::Dam,
+        tree_options::TreeOptions,
+        verb_invocation::VerbInvocation,
+        verbs::{Verb, VerbExecutor},
+    },
+    super::HelpState,
+};
+
+impl VerbExecutor for HelpState {
+    fn execute_verb(
+        &mut self,
+        verb: &Verb,
+        invocation: &VerbInvocation,
+        screen: &mut Screen,
+        con: &AppContext,
+    ) -> Result<AppStateCmdResult, ProgramError> {
+        if let Some(err) = verb.match_error(invocation) {
+            return Ok(AppStateCmdResult::DisplayError(err));
+        }
+        Ok(match verb.execution.as_ref() {
+            ":back" => AppStateCmdResult::PopState,
+            ":focus" | ":parent" => AppStateCmdResult::from_optional_state(
+                BrowserState::new(
+                    conf::dir(),
+                    TreeOptions::default(),
+                    screen,
+                    &Dam::unlimited(),
+                ),
+                Command::new(),
+            ),
+            ":help" => AppStateCmdResult::Keep,
+            ":line_down" => {
+                self.scroll += 1;
+                AppStateCmdResult::Keep
+            }
+            ":line_up" => {
+                self.scroll -= 1;
+                AppStateCmdResult::Keep
+            }
+            ":open_stay" => match open::that(&Conf::default_location()) {
+                Ok(exit_status) => {
+                    info!("open returned with exit_status {:?}", exit_status);
+                    AppStateCmdResult::Keep
+                }
+                Err(e) => AppStateCmdResult::DisplayError(format!("{:?}", e)),
+            },
+            ":open_leave" => AppStateCmdResult::from(Launchable::opener(Conf::default_location())),
+            ":page_down" => {
+                self.scroll += self.area.height as i32;
+                AppStateCmdResult::Keep
+            }
+            ":page_up" => {
+                self.scroll -= self.area.height as i32;
+                AppStateCmdResult::Keep
+            }
+            ":print_path" => external::print_path(&Conf::default_location(), con)?,
+            ":print_relative_path" => {
+                external::print_relative_path(&Conf::default_location(), con)?
+            }
+            ":quit" => AppStateCmdResult::Quit,
+            ":focus_user_home" | ":focus_root" => AppStateCmdResult::PopStateAndReapply,
+            _ if verb.execution.starts_with(":toggle") => AppStateCmdResult::PopStateAndReapply,
+            _ if verb.execution.starts_with(':') => AppStateCmdResult::Keep,
+            _ => verb.to_cmd_result(
+                &Conf::default_location(),
+                &invocation.args,
+                screen,
+                con,
+            )?,
+        })
+    }
+}