Improve some signal bindings to use specific `Object` subtypes

doc/classes/ButtonGroup.xml

@@ -28,7 +28,7 @@
 	</members>
 	<signals>
 		<signal name="pressed">
-			<argument index="0" name="button" type="Object" />
+			<argument index="0" name="button" type="BaseButton" />
 			<description>
 				Emitted when one of the buttons of the group is pressed.
 			</description>

doc/classes/EditorInspector.xml

@@ -59,8 +59,8 @@
 			</description>
 		</signal>
 		<signal name="resource_selected">
-			<argument index="0" name="res" type="Object" />
-			<argument index="1" name="prop" type="String" />
+			<argument index="0" name="resource" type="Resource" />
+			<argument index="1" name="path" type="String" />
 			<description>
 				Emitted when a resource is selected in the inspector.
 			</description>

editor/editor_inspector.cpp

@@ -919,6 +919,7 @@ void EditorProperty::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draw_warning"), "set_draw_warning", "is_draw_warning");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "keying"), "set_keying", "is_keying");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "deletable"), "set_deletable", "is_deletable");
+
 	ADD_SIGNAL(MethodInfo("property_changed", PropertyInfo(Variant::STRING_NAME, "property"), PropertyInfo(Variant::NIL, "value", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT)));
 	ADD_SIGNAL(MethodInfo("multiple_properties_changed", PropertyInfo(Variant::PACKED_STRING_ARRAY, "properties"), PropertyInfo(Variant::ARRAY, "value")));
 	ADD_SIGNAL(MethodInfo("property_keyed", PropertyInfo(Variant::STRING_NAME, "property")));
@@ -3543,7 +3544,7 @@ void EditorInspector::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("property_selected", PropertyInfo(Variant::STRING, "property")));
 	ADD_SIGNAL(MethodInfo("property_keyed", PropertyInfo(Variant::STRING, "property"), PropertyInfo(Variant::NIL, "value", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT), PropertyInfo(Variant::BOOL, "advance")));
 	ADD_SIGNAL(MethodInfo("property_deleted", PropertyInfo(Variant::STRING, "property")));
-	ADD_SIGNAL(MethodInfo("resource_selected", PropertyInfo(Variant::OBJECT, "res"), PropertyInfo(Variant::STRING, "prop")));
+	ADD_SIGNAL(MethodInfo("resource_selected", PropertyInfo(Variant::OBJECT, "resource", PROPERTY_HINT_RESOURCE_TYPE, "Resource"), PropertyInfo(Variant::STRING, "path")));
 	ADD_SIGNAL(MethodInfo("object_id_selected", PropertyInfo(Variant::INT, "id")));
 	ADD_SIGNAL(MethodInfo("property_edited", PropertyInfo(Variant::STRING, "property")));
 	ADD_SIGNAL(MethodInfo("property_toggled", PropertyInfo(Variant::STRING, "property"), PropertyInfo(Variant::BOOL, "checked")));

modules/webrtc/doc_classes/WebRTCPeerConnection.xml

@@ -117,7 +117,7 @@
 	</methods>
 	<signals>
 		<signal name="data_channel_received">
-			<argument index="0" name="channel" type="Object" />
+			<argument index="0" name="channel" type="WebRTCDataChannel" />
 			<description>
 				Emitted when a new in-band channel is received, i.e. when the channel was created with [code]negotiated: false[/code] (default).
 				The object will be an instance of [WebRTCDataChannel]. You must keep a reference of it or it will be closed automatically. See [method create_data_channel].

modules/webrtc/webrtc_peer_connection.cpp

@@ -69,7 +69,7 @@ void WebRTCPeerConnection::_bind_methods() {
 
 	ADD_SIGNAL(MethodInfo("session_description_created", PropertyInfo(Variant::STRING, "type"), PropertyInfo(Variant::STRING, "sdp")));
 	ADD_SIGNAL(MethodInfo("ice_candidate_created", PropertyInfo(Variant::STRING, "media"), PropertyInfo(Variant::INT, "index"), PropertyInfo(Variant::STRING, "name")));
-	ADD_SIGNAL(MethodInfo("data_channel_received", PropertyInfo(Variant::OBJECT, "channel")));
+	ADD_SIGNAL(MethodInfo("data_channel_received", PropertyInfo(Variant::OBJECT, "channel", PROPERTY_HINT_RESOURCE_TYPE, "WebRTCDataChannel")));
 
 	BIND_ENUM_CONSTANT(STATE_NEW);
 	BIND_ENUM_CONSTANT(STATE_CONNECTING);

scene/gui/base_button.cpp

@@ -444,6 +444,7 @@ void BaseButton::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("button_up"));
 	ADD_SIGNAL(MethodInfo("button_down"));
 	ADD_SIGNAL(MethodInfo("toggled", PropertyInfo(Variant::BOOL, "button_pressed")));
+
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "disabled"), "set_disabled", "is_disabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "toggle_mode"), "set_toggle_mode", "is_toggle_mode");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "shortcut_in_tooltip"), "set_shortcut_in_tooltip", "is_shortcut_in_tooltip_enabled");
@@ -503,7 +504,8 @@ BaseButton *ButtonGroup::get_pressed_button() {
 void ButtonGroup::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_pressed_button"), &ButtonGroup::get_pressed_button);
 	ClassDB::bind_method(D_METHOD("get_buttons"), &ButtonGroup::_get_buttons);
-	ADD_SIGNAL(MethodInfo("pressed", PropertyInfo(Variant::OBJECT, "button")));
+
+	ADD_SIGNAL(MethodInfo("pressed", PropertyInfo(Variant::OBJECT, "button", PROPERTY_HINT_RESOURCE_TYPE, "BaseButton")));
 }
 
 ButtonGroup::ButtonGroup() {