Add preserve_clipboard mode

src/config/mod.rs

@@ -53,6 +53,7 @@ fn default_use_system_agent() -> bool { true }
 fn default_config_caching_interval() -> i32 { 800 }
 fn default_word_separators() -> Vec<char> { vec![' ', ',', '.', '\r', '\n', 22u8 as char] }
 fn default_toggle_interval() -> u32 { 230 }
+fn default_preserve_clipboard() -> bool {false}
 fn default_backspace_limit() -> i32 { 3 }
 fn default_exclude_default_matches() -> bool {false}
 fn default_matches() -> Vec<Match> { Vec::new() }
@@ -98,6 +99,9 @@ pub struct Configs {
     #[serde(default = "default_toggle_interval")]
     pub toggle_interval: u32,
 
+    #[serde(default = "default_preserve_clipboard")]
+    pub preserve_clipboard: bool,
+
     #[serde(default)]
     pub paste_shortcut: PasteShortcut,
 
@@ -145,6 +149,7 @@ impl Configs {
         validate_field!(result, self.backspace_limit, default_backspace_limit());
         validate_field!(result, self.ipc_server_port, default_ipc_server_port());
         validate_field!(result, self.use_system_agent, default_use_system_agent());
+        validate_field!(result, self.preserve_clipboard, default_preserve_clipboard());
 
         result
     }

src/engine.rs

@@ -95,6 +95,19 @@ impl <'a, S: KeyboardManager, C: ClipboardManager, M: ConfigManager<'a>, U: UIMa
 
         menu
     }
+
+    fn return_content_if_preserve_clipboard_is_enabled(&self) -> Option<String> {
+        // If the preserve_clipboard option is enabled, first save the current
+        // clipboard content in order to restore it later.
+        if self.config_manager.default_config().preserve_clipboard {
+            match self.clipboard_manager.get_clipboard() {
+                Some(clipboard) => {Some(clipboard)},
+                None => {None},
+            }
+        }else {
+            None
+        }
+    }
 }
 
 lazy_static! {
@@ -119,6 +132,8 @@ impl <'a, S: KeyboardManager, C: ClipboardManager, M: ConfigManager<'a>, U: UIMa
 
         self.keyboard_manager.delete_string(char_count);
 
+        let mut previous_clipboard_content : Option<String> = None;
+
         // Manage the different types of matches
         match &m.content {
             // Text Match
@@ -205,10 +220,12 @@ impl <'a, S: KeyboardManager, C: ClipboardManager, M: ConfigManager<'a>, U: UIMa
                         }
                     },
                     BackendType::Clipboard => {
-                        let previous_clipboard_content = self.clipboard_manager.get_clipboard().unwrap_or(String::from(""));
+                        // If the preserve_clipboard option is enabled, save the current
+                        // clipboard content to restore it later.
+                        previous_clipboard_content = self.return_content_if_preserve_clipboard_is_enabled();
+
                         self.clipboard_manager.set_clipboard(&target_string);
                         self.keyboard_manager.trigger_paste(&config.paste_shortcut);
-                        self.clipboard_manager.set_clipboard(&previous_clipboard_content);
                     },
                 }
 
@@ -222,6 +239,10 @@ impl <'a, S: KeyboardManager, C: ClipboardManager, M: ConfigManager<'a>, U: UIMa
             MatchContentType::Image(content) => {
                 // Make sure the image exist beforehand
                 if content.path.exists() {
+                    // If the preserve_clipboard option is enabled, save the current
+                    // clipboard content to restore it later.
+                    previous_clipboard_content = self.return_content_if_preserve_clipboard_is_enabled();
+
                     self.clipboard_manager.set_clipboard_image(&content.path);
                     self.keyboard_manager.trigger_paste(&config.paste_shortcut);
                 }else{
@@ -229,6 +250,11 @@ impl <'a, S: KeyboardManager, C: ClipboardManager, M: ConfigManager<'a>, U: UIMa
                 }
             },
         }
+
+        // Restore previous clipboard content
+        if let Some(previous_clipboard_content) = previous_clipboard_content {
+            self.clipboard_manager.set_clipboard(&previous_clipboard_content);
+        }
     }
 
     fn on_enable_update(&self, status: bool) {