Merge pull request 'b999_chrome_file_upload' (#47) from b999_chrome_file_upload into development

Reviewed-on: #47

src/routes/(token-based)/list/[vorgang]/+page.svelte

@@ -42,6 +42,7 @@
 	let formErrors: Record<string, any> | null = $state(null);
 	let etag: string | null = $state(null);
 	let files: FileList | null = $state(null);
+	let fileInput = $state(null);
 
 	// Model Variablen für Upload
 	let openUL = $state(false);
@@ -102,6 +103,7 @@
 		openUL = false;
 		name = '';
 		files = null;
+		fileInput.value = "";
 		await invalidateAll();
 		crimesList = data.crimesList;
 	}
@@ -287,8 +289,34 @@ Mit freundlichen Grüßen,
 		open = false;
 		isError = false;
 	}
+
+	// drag and drop functionality
+		let isDragging = $state(false);
+
+		async function handleDrop(event) {
+			event.preventDefault();
+			isDragging = false;
+
+			if (event.dataTransfer?.files?.length) {
+				files = event.dataTransfer.files;
+			}
+			if (!(await check_valid_glb_file())) {
+				formErrors = { file: 'Keine gültige .GLD-Datei' }
+				// reset form fields etc.
+				files = null;
+				fileInput.value = '';
+			} else {
+				formErrors = { ...formErrors, file: ''}
+			};
+		}
+
 </script>
 
+<svelte:window
+	on:dragover|preventDefault
+	on:drop|preventDefault
+/>
+
 {#if data.vorgang && crimesList}
 	<div class="-z-10 bg-white">
 		<div class="flex flex-col items-center justify-center w-full">
@@ -415,7 +443,13 @@ Mit freundlichen Grüßen,
 							</span>
 						</label>
 						<div
-							class="mt-2 flex justify-center rounded-lg border border-dashed border-gray-900/25 px-6 py-10"
+							class="mt-2 flex justify-center rounded-lg border border-dashed px-6 py-10
+								{isDragging
+								? 'border-blue-500 bg-blue-50'
+								: 'border-gray-900/25'}"
+							on:dragover|preventDefault={() => (isDragging = true)}
+							on:dragleave={() => (isDragging = false)}
+							on:drop={handleDrop}
 						>
 							<div class="text-center">
 								<FileRect />
@@ -425,7 +459,7 @@ Mit freundlichen Grüßen,
 										class="relative cursor-pointer rounded-md bg-white font-semibold text-indigo-600 focus-within:outline-none focus-within:ring-2 focus-within:ring-indigo-600 focus-within:ring-offset-2 hover:text-indigo-500"
 									>
 										<span>Wähle eine Datei aus</span>
-										<input id="file" bind:files name="file" type="file" class="sr-only" />
+										<input id="file" bind:this={fileInput} bind:files name="file" type="file" class="sr-only" />
 									</label>
 									<p class="pl-1">oder ziehe sie ins Feld</p>
 								</div>