CmbColorEntry: add new property editor

Add color editor

cambalache/cmb_property_controls.py

@@ -645,3 +645,68 @@ class CmbIconNameEntry(CmbEntry):
         popover.get_style_context().add_class("cmb-icon-chooser")
         popover.add(hbox)
         popover.popup()
+
+
+class CmbColorEntry(Gtk.Box):
+    __gtype_name__ = 'CmbColorEntry'
+
+    use_color = GObject.Property(type=bool, default=False, flags = GObject.ParamFlags.READWRITE)
+
+    def __init__(self, **kwargs):
+        self.__ignore_notify = False
+
+        super().__init__(**kwargs)
+
+        self.entry = Gtk.Entry(visible=True,
+                               width_chars=14,
+                               editable=False)
+        self.button = Gtk.ColorButton(visible=True,
+                                      use_alpha=True)
+
+        self.__default_color = self.button.props.color
+        self.__default_rgba = self.button.props.rgba
+
+        self.pack_start(self.entry, False, True, 0)
+        self.pack_start(self.button, False, True, 4)
+
+        self.button.connect('color-set', self.__on_color_set)
+        self.entry.connect("icon-press", self.__on_entry_icon_pressed)
+
+    def __on_entry_icon_pressed(self, widget, icon_pos, event):
+        self.cmb_value = None
+
+    def __on_color_set(self, obj):
+        if self.use_color:
+            self.cmb_value = self.button.props.color.to_string() if self.button.props.color else None
+        else:
+            self.cmb_value = self.button.props.rgba.to_string() if self.button.props.rgba else None
+
+    @GObject.Property(type=str)
+    def cmb_value(self):
+        return self.entry.props.text if self.entry.props.text != '' else None
+
+    @cmb_value.setter
+    def _set_cmb_value(self, value):
+        if value:
+            self.entry.props.text = value
+            self.entry.props.secondary_icon_name = 'edit-clear-symbolic'
+        else:
+            self.entry.props.text = ''
+            self.entry.props.secondary_icon_name = None
+
+        valid = False
+
+        if self.use_color:
+            color = None
+            if value:
+                valid, color = Gdk.Color.parse(value)
+
+            self.button.set_color(color if valid else self.__default_color)
+        else:
+            rgba = Gdk.RGBA()
+
+            if value:
+                valid = rgba.parse(value)
+
+            self.button.set_rgba(rgba if valid else self.__default_rgba)
+