added simple wait dialog

app/ui/dialogs.py

@@ -1,24 +1,36 @@
 """ Common module for showing dialogs """
 from enum import Enum
 
+from app.commons import run_idle
 from . import Gtk, UI_RESOURCES_PATH
 
 
 class DialogType(Enum):
     INPUT = "input_dialog"
-    MESSAGE = ""
     CHOOSER = "path_chooser_dialog"
     ERROR = "error_dialog"
     QUESTION = "question_dialog"
     ABOUT = "about_dialog"
+    WAIT = "wait_dialog"
+
+
+class WaitDialog:
+    def __init__(self, transient):
+        builder, dialog = get_dialog_from_xml(DialogType.WAIT, transient)
+        self._dialog = dialog
+        self._dialog.set_transient_for(transient)
+
+    def show(self):
+        self._dialog.show()
+
+    @run_idle
+    def hide(self):
+        self._dialog.hide()
 
 
 def show_dialog(dialog_type: DialogType, transient, text=None, options=None, action_type=None, file_filter=None):
     """ Shows dialogs by name """
-    builder = Gtk.Builder()
-    builder.add_from_file(UI_RESOURCES_PATH + "dialogs.glade")
-    dialog = builder.get_object(dialog_type.value)
-    dialog.set_transient_for(transient)
+    builder, dialog = get_dialog_from_xml(dialog_type, transient)
 
     if dialog_type is DialogType.CHOOSER and options:
         if action_type is not None:
@@ -58,6 +70,14 @@ def show_dialog(dialog_type: DialogType, transient, text=None, options=None, act
     return response
 
 
+def get_dialog_from_xml(dialog_type, transient):
+    builder = Gtk.Builder()
+    builder.add_from_file(UI_RESOURCES_PATH + "dialogs.glade")
+    dialog = builder.get_object(dialog_type.value)
+    dialog.set_transient_for(transient)
+    return builder, dialog
+
+
 def get_chooser_dialog(transient, options, pattern, name):
     file_filter = Gtk.FileFilter()
     file_filter.add_pattern(pattern)