From 9ad16eaecef73e9a4c26d69aa7ab09726de239cd Mon Sep 17 00:00:00 2001
From: Luke Hubmayer-Werner <mongoose41@gmail.com>
Date: Mon, 8 Jul 2024 15:35:38 +0930
Subject: [PATCH] [Web] Allow dropping files onto the window to load them.

---
 widgets/FileSelectWeb.gd | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/widgets/FileSelectWeb.gd b/widgets/FileSelectWeb.gd
index fa2fbeb..e455feb 100644
--- a/widgets/FileSelectWeb.gd
+++ b/widgets/FileSelectWeb.gd
@@ -145,6 +145,24 @@ func _upload_file(filename: String, file_type: String, data):  # data is Javascr
 	print('uploaded "%s" with filesize %d bytes'%[filename, len(data)])
 	update_view()
 
+func _files_dropped(filenames: PoolStringArray, screen_idx: int) -> void:
+	print('Files Dropped signal: screen=%d, files='%screen_idx, filenames)
+	for filename in filenames:
+		var ext: String = filename.rsplit('.', true, 1)[1]
+		if ext in ALLOWED_EXTS:
+			var file := File.new()
+			match file.open(filename, File.READ):
+				OK:
+					var rom_size := file.get_len()
+					var data := file.get_buffer(rom_size)
+					uploaded_files[filename] = data
+					uploaded_files_types[filename] = ext
+					print('uploaded "%s" with filesize %d bytes'%[filename, len(data)])
+					update_view()
+					load_file(filename)
+				var error:
+					print_debug('Error %d loading filename:'%error, filename)
+
 func _ready() -> void:
 	if OS.get_name() != 'HTML5' or !OS.has_feature('JavaScript'):
 		return
@@ -155,6 +173,7 @@ func _ready() -> void:
 	RomLoader.connect('rom_loaded', self, '_on_rom_loaded')
 	RomLoader.connect('loading_stage_updated', self, '_on_loading_stage_updated')
 	HTML5.connect('uploaded_file', self, '_upload_file')
+	get_tree().connect('files_dropped', self, '_files_dropped')
 
 func _set_mode(new_mode) -> void:
 	match new_mode: