Improve modulo app bundle generation. Fix #430

Cargo.toml

@@ -10,7 +10,7 @@ edition = "2018"
 build="build.rs"
 
 [modulo]
-version = "0.1.0"
+version = "0.1.1"
 
 [dependencies]
 widestring = "0.4.0"

src/ui/modulo/mac.rs

@@ -1,10 +1,25 @@
 use log::info;
+use std::path::PathBuf;
 use std::os::unix::fs::symlink;
 
 const MODULO_APP_BUNDLE_NAME: &str = "Modulo.app";
 const MODULO_APP_BUNDLE_PLIST_CONTENT: &'static str = include_str!("../../res/mac/modulo.plist");
 
 pub fn generate_modulo_app_bundle(modulo_path: &str) -> Result<PathBuf, std::io::Error> {
+    let modulo_pathbuf = PathBuf::from(modulo_path);
+    let modulo_path: String = if !modulo_pathbuf.exists() {
+        // If modulo was taken from the PATH, we need to calculate the absolute path
+        // To do so, we use the `which` command
+        let output = std::process::Command::new("which").arg("modulo").output().expect("unable to call 'which' command to determine modulo's full path");
+        let path = String::from_utf8_lossy(output.stdout.as_slice());
+        let path = path.trim();
+
+        info!("Detected modulo's full path: {:?}", &path);
+        path.to_string()
+    }else{
+        modulo_path.to_owned()
+    };
+
     let data_dir = crate::context::get_data_dir();
 
     let modulo_app_dir = data_dir.join(MODULO_APP_BUNDLE_NAME);
@@ -24,7 +39,7 @@ pub fn generate_modulo_app_bundle(modulo_path: &str) -> Result<PathBuf, std::io:
     std::fs::create_dir(&macos_dir)?;
 
     // Generate the Plist file
-    let plist_content = MODULO_APP_BUNDLE_PLIST_CONTENT.replace("{{{modulo_path}}}", modulo_path);
+    let plist_content = MODULO_APP_BUNDLE_PLIST_CONTENT.replace("{{{modulo_path}}}", &modulo_path);
     let plist_file = contents_dir.join("Info.plist");
     std::fs::write(plist_file, plist_content)?;
 

src/ui/modulo/mod.rs

@@ -44,16 +44,19 @@ impl ModuloManager {
             }
         }
 
-        // TODO: explain why
+        if let Some(ref path) = modulo_path {
+            info!("Using modulo at {:?}", path);
+
+            // MacOS specific remark
+            // In order to give modulo the focus when spawning a form, modulo has to be
+            // wrapped inside an application bundle. Therefore, we generate a bundle
+            // at startup.
+            // See issue: https://github.com/federico-terzi/espanso/issues/430
             #[cfg(target_os = "macos")]
             {
-            modulo_path = generate_modulo_app_bundle(&modulo_path).expect("unable to generate modulo app stub")
-                        .to_string_lossy().to_string();
+                modulo_path = Some(mac::generate_modulo_app_bundle(path).expect("unable to generate modulo app stub")
+                            .to_string_lossy().to_string());
             }
-        
-
-        if let Some(ref modulo_path) = modulo_path {
-            info!("Using modulo at {:?}", modulo_path);
         }
 
         Self { modulo_path }