1 files changed, 60 insertions, 2 deletions

diff --git a/editor/filesystem_dock.cpp b/editor/filesystem_dock.cpp
index dd80ff49ac..87ba7f53b0 100644
--- a/editor/filesystem_dock.cpp
+++ b/editor/filesystem_dock.cpp
@@ -47,6 +47,7 @@
 #include "editor/gui/editor_dir_dialog.h"
 #include "editor/import/resource_importer_scene.h"
 #include "editor/import_dock.h"
+#include "editor/plugins/editor_resource_tooltip_plugins.h"
 #include "editor/scene_create_dialog.h"
 #include "editor/scene_tree_dock.h"
 #include "editor/shader_create_dialog.h"
@@ -54,10 +55,27 @@
 #include "scene/gui/label.h"
 #include "scene/gui/line_edit.h"
 #include "scene/gui/progress_bar.h"
+#include "scene/gui/texture_rect.h"
 #include "scene/main/window.h"
 #include "scene/resources/packed_scene.h"
 #include "servers/display_server.h"
 
+Control *FileSystemTree::make_custom_tooltip(const String &p_text) const {
+	TreeItem *item = get_item_at_position(get_local_mouse_position());
+	if (!item) {
+		return nullptr;
+	}
+	return FileSystemDock::get_singleton()->create_tooltip_for_path(item->get_metadata(0));
+}
+
+Control *FileSystemList::make_custom_tooltip(const String &p_text) const {
+	int idx = get_item_at_position(get_local_mouse_position());
+	if (idx == -1) {
+		return nullptr;
+	}
+	return FileSystemDock::get_singleton()->create_tooltip_for_path(get_item_metadata(idx));
+}
+
 FileSystemDock *FileSystemDock::singleton = nullptr;
 
 Ref<Texture2D> FileSystemDock::_get_tree_item_icon(bool p_is_valid, String p_file_type) {
@@ -2249,6 +2267,41 @@ void FileSystemDock::set_file_list_display_mode(FileListDisplayMode p_mode) {
 	_toggle_file_display();
 }
 
+void FileSystemDock::add_resource_tooltip_plugin(const Ref<EditorResourceTooltipPlugin> &p_plugin) {
+	tooltip_plugins.push_back(p_plugin);
+}
+
+void FileSystemDock::remove_resource_tooltip_plugin(const Ref<EditorResourceTooltipPlugin> &p_plugin) {
+	int index = tooltip_plugins.find(p_plugin);
+	ERR_FAIL_COND_MSG(index == -1, "Can't remove plugin that wasn't registered.");
+	tooltip_plugins.remove_at(index);
+}
+
+Control *FileSystemDock::create_tooltip_for_path(const String &p_path) const {
+	if (DirAccess::exists(p_path)) {
+		// No tooltip for directory.
+		return nullptr;
+	}
+
+	const String type = ResourceLoader::get_resource_type(p_path);
+	Control *tooltip = nullptr;
+
+	for (const Ref<EditorResourceTooltipPlugin> &plugin : tooltip_plugins) {
+		if (plugin->handles(type)) {
+			tooltip = plugin->make_tooltip_for_path(p_path, EditorResourcePreview::get_singleton()->get_preview_metadata(p_path));
+		}
+
+		if (tooltip) {
+			break;
+		}
+	}
+
+	if (!tooltip) {
+		tooltip = EditorResourceTooltipPlugin::make_default_tooltip(p_path);
+	}
+	return tooltip;
+}
+
 Variant FileSystemDock::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
 	bool all_favorites = true;
 	bool all_not_favorites = true;
@@ -3130,6 +3183,9 @@ void FileSystemDock::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("_update_import_dock"), &FileSystemDock::_update_import_dock);
 
+	ClassDB::bind_method(D_METHOD("add_resource_tooltip_plugin", "plugin"), &FileSystemDock::add_resource_tooltip_plugin);
+	ClassDB::bind_method(D_METHOD("remove_resource_tooltip_plugin", "plugin"), &FileSystemDock::remove_resource_tooltip_plugin);
+
 	ADD_SIGNAL(MethodInfo("inherit", PropertyInfo(Variant::STRING, "file")));
 	ADD_SIGNAL(MethodInfo("instantiate", PropertyInfo(Variant::PACKED_STRING_ARRAY, "files")));
 
@@ -3227,7 +3283,7 @@ FileSystemDock::FileSystemDock() {
 	split_box->set_v_size_flags(SIZE_EXPAND_FILL);
 	add_child(split_box);
 
-	tree = memnew(Tree);
+	tree = memnew(FileSystemTree);
 
 	tree->set_hide_root(true);
 	SET_DRAG_FORWARDING_GCD(tree, FileSystemDock);
@@ -3266,7 +3322,7 @@ FileSystemDock::FileSystemDock() {
 	button_file_list_display_mode->set_flat(true);
 	path_hb->add_child(button_file_list_display_mode);
 
-	files = memnew(ItemList);
+	files = memnew(FileSystemList);
 	files->set_v_size_flags(SIZE_EXPAND_FILL);
 	files->set_select_mode(ItemList::SELECT_MULTI);
 	SET_DRAG_FORWARDING_GCD(files, FileSystemDock);
@@ -3355,6 +3411,8 @@ FileSystemDock::FileSystemDock() {
 	display_mode = DISPLAY_MODE_TREE_ONLY;
 	old_display_mode = DISPLAY_MODE_TREE_ONLY;
 	file_list_display_mode = FILE_LIST_DISPLAY_THUMBNAILS;
+
+	add_resource_tooltip_plugin(memnew(EditorTextureTooltipPlugin));
 }
 
 FileSystemDock::~FileSystemDock() {