From 2b7fed57329c4c356c084457d7e25049b34006cd Mon Sep 17 00:00:00 2001
From: Andy Stewart <lazycat.manatee@gmail.com>
Date: Fri, 6 Dec 2019 09:15:51 +0800
Subject: [PATCH] Fix #101 , add set_emacs_var interface use for pass data from
 Python to Elisp

---
 core/buffer.py | 2 ++
 eaf.el         | 8 ++++++++
 eaf.py         | 7 +++++++
 3 files changed, 17 insertions(+)

diff --git a/core/buffer.py b/core/buffer.py
index 1fd0e3f..93db360 100644
--- a/core/buffer.py
+++ b/core/buffer.py
@@ -134,6 +134,7 @@ class Buffer(QGraphicsScene):
     input_message = QtCore.pyqtSignal(str, str, str)
     close_buffer = QtCore.pyqtSignal(str)
     message_to_emacs = QtCore.pyqtSignal(str)
+    set_emacs_var = QtCore.pyqtSignal(str, str)
 
     def __init__(self, buffer_id, url, arguments, fit_to_view, background_color):
         super(QGraphicsScene, self).__init__()
@@ -186,6 +187,7 @@ class Buffer(QGraphicsScene):
         self.buffer_widget.installEventFilter(self)
 
         self.buffer_widget.message_to_emacs = self.message_to_emacs
+        self.buffer_widget.set_emacs_var = self.set_emacs_var
 
     def handle_destroy(self):
         self.before_destroy_hook.emit()
diff --git a/eaf.el b/eaf.el
index c901f87..9127fd1 100644
--- a/eaf.el
+++ b/eaf.el
@@ -641,6 +641,14 @@ Use it as (eaf-bind-key var key eaf-app-keybinding)"
  "com.lazycat.eaf" "create_new_browser_buffer"
  'eaf-create-new-browser-buffer)
 
+(dbus-register-signal
+ :session "com.lazycat.eaf" "/com/lazycat/eaf"
+ "com.lazycat.eaf" "set_emacs_var"
+ 'eaf-set-emacs-var)
+
+(defun eaf-set-emacs-var (var-name var-value)
+  (set (intern var-name) var-value))
+
 (defun eaf-create-new-browser-buffer (new-window-buffer-id)
   (let ((eaf-buffer (generate-new-buffer (concat "Browser Popup Window " new-window-buffer-id))))
     (with-current-buffer eaf-buffer
diff --git a/eaf.py b/eaf.py
index d3c60e4..17089a6 100755
--- a/eaf.py
+++ b/eaf.py
@@ -151,6 +151,9 @@ class EAF(dbus.service.Object):
         # Handle message to emacs.
         app_buffer.message_to_emacs.connect(self.message_to_emacs)
 
+        # Handle set emacs var signal.
+        app_buffer.set_emacs_var.connect(self.set_emacs_var)
+
         # Add create new window callback if module is browser
         if module_path == "app.browser.buffer":
             app_buffer.buffer_widget.create_new_browser_window_callback = self.create_new_browser_window
@@ -296,6 +299,10 @@ class EAF(dbus.service.Object):
     def message_to_emacs(self, message):
         pass
 
+    @dbus.service.signal(EAF_DBUS_NAME)
+    def set_emacs_var(self, var_name, var_value):
+        pass
+
     @dbus.service.signal(EAF_DBUS_NAME)
     def get_emacs_var(self):
         pass