Improve VisualScript UX

* Prototype faster function call ux.
* Work on general search ux.
* Able to create nodes from search.
* Show class for variables but not methods.
* Get actions search working.
* Descriptions now show for both methods and properties.
* Enable zooming on mouse wheel up and down.
* Make the drag trigger on right mouse button.
* Search now shows for action visual script nodes.
* Able to search visual node names.
* Search works better.
* Change zooming scale to hide artifacts better.
* Remove zoom changes
* Select from base should check properties too like the other functions.
* Seq_connect flag is needed to set sequence lines correctly.
* Remove comment
* Code cleanup with function names and arguments.
* Use brief description for search descriptions.
* Clean and fix bug with input nodes connecting with sequence lines.
* Add a warning and fix some edge conditions with sequence into data lines and vice versa.
* Don't search functions when pulling from a sequence node.
* Don't show actions when pulling from a data line.
* Set set and get properties.
* Convert visual script operators to the correct type
* Create a function preset finds only functions.
* Singletons can now find functions.
* Add shift-a for generic search.
* Add brief descriptions for Visual Script nodes.
* Search boxes can now filter names.
* Add bigger hit zones to node connect.
* For the drop zones, make all the rect2 areas the same size.
* Function names in visual script node should be lower case so that search works better.
* Use the convention of capitalize() for set, set, visual script nodes and methods.
* Make search more general. Ignore "_" and make case-insensitive. Also made the search window smaller and remove extra info from search
* Make type_cast use the connecting node's type and remove use of found variable.
* Fix case where you call an instance's call function where it becomes an invalid call.
* Make get_visual_node_names use a set of filters, move action creations and fix bug with sequence node connections.
* Make the window bigger.
* Make connect_data and connect_seq more robust.
* Add icons to search items.
* Add vs constructors in shift-a menu.
* Operators, builtins and constructors show type name. Fix several problems with port connections.
* In shift-a mode search everything.
* Code cleanup
* Work on autocompleting the type.
  * Use type guess in action creation.
  * Check if type hint string exists in object variables when generating the visual script search.
  * Add the hint to SceneTree.
  * Add original type detection.
  * Make type casting great again. This puts the type casted base type as the data output type string hint.
  * Pass the type in a VisualScriptFunctionCall too.
  * Set the base type correctly in VisualScriptFunctionGet and VisualScriptFunctionSet using hint string.
  * Make sure the instance is passed in VisualScriptPropertySet.
  * Restore search on the node's type.
* Remove dependencies from graph_edit.
* Remove dependencies from property_selector and name the class visual_script_property_selector.
* Extract hot zones into a function.
* Move hot_zones constants into default theme.
* Bigger capture zones.
* Clean messy port_grab_distance variables.
* Remove RMB functionality.
* Remove memory leak on showing visual script descriptions.
* Read the port_grab_distance constants on enter tree and theme changed.

modules/visual_script/visual_script_editor.h

@@ -34,9 +34,9 @@
 #include "editor/create_dialog.h"
 #include "editor/plugins/script_editor_plugin.h"
 #include "editor/property_editor.h"
-#include "editor/property_selector.h"
 #include "scene/gui/graph_edit.h"
 #include "visual_script.h"
+#include "visual_script_property_selector.h"
 class VisualScriptEditorSignalEdit;
 class VisualScriptEditorVariableEdit;
 
@@ -62,15 +62,8 @@ class VisualScriptEditor : public ScriptEditorBase {
 
 	enum PortAction {
 
-		CREATE_CALL,
-		CREATE_SET,
-		CREATE_GET,
-		CREATE_COND,
-		CREATE_SEQUENCE,
-		CREATE_SWITCH,
-		CREATE_ITERATOR,
-		CREATE_WHILE,
-		CREATE_RETURN,
+		CREATE_CALL_SET_GET,
+		CREATE_ACTION,
 	};
 
 	enum MemberAction {
@@ -102,9 +95,9 @@ class VisualScriptEditor : public ScriptEditorBase {
 	AcceptDialog *edit_signal_dialog;
 	PropertyEditor *edit_signal_edit;
 
-	PropertySelector *method_select;
-	PropertySelector *new_connect_node_select;
-	PropertySelector *new_virtual_method_select;
+	VisualScriptPropertySelector *method_select;
+	VisualScriptPropertySelector *new_connect_node_select;
+	VisualScriptPropertySelector *new_virtual_method_select;
 
 	VisualScriptEditorVariableEdit *variable_editor;
 
@@ -162,21 +155,29 @@ class VisualScriptEditor : public ScriptEditorBase {
 
 	static Clipboard *clipboard;
 
-	PopupMenu *port_action_popup;
 	PopupMenu *member_popup;
-
 	MemberType member_type;
 	String member_name;
 
+	bool seq_connect = false;
+
 	PortAction port_action;
 	int port_action_node;
 	int port_action_output;
 	Vector2 port_action_pos;
 	int port_action_new_node;
 	void _port_action_menu(int p_option);
-	void _selected_connect_node_method_or_setget(const String &p_text);
-	void _cancel_connect_node_method_or_setget();
-	void _selected_new_virtual_method(const String &p_text);
+
+	void new_node(Ref<VisualScriptNode> vnode, Vector2 ofs);
+
+	void connect_data(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode, int new_id);
+
+	void _selected_connect_node(const String &p_text, const String &p_category);
+	void connect_seq(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode_new, int new_id);
+
+	void _cancel_connect_node();
+	void _create_new_node(const String &p_text, const String &p_category, const Vector2 &p_point);
+	void _selected_new_virtual_method(const String &p_text, const String &p_category);
 
 	int error_line;
 
@@ -231,7 +232,7 @@ class VisualScriptEditor : public ScriptEditorBase {
 	void _comment_node_resized(const Vector2 &p_new_size, int p_node);
 
 	int selecting_method_id;
-	void _selected_method(const String &p_method);
+	void _selected_method(const String &p_method, const String &p_type);
 
 	void _draw_color_over_button(Object *obj, Color p_color);
 	void _button_resource_previewed(const String &p_path, const Ref<Texture> &p_preview, Variant p_ud);