Add file upload on gist creation/edition (#507)

templates/pages/create.html

@@ -41,6 +41,24 @@
                 {{ end }}
             </div>
 
+            <div id="file-upload-zone" class="space-y-4">
+                <label for="file-upload" class="cursor-pointer block">
+                    <div class="border-2 border-dashed border-gray-300 dark:border-gray-600 rounded-lg p-6 text-center hover:border-primary-400 dark:hover:border-primary-500 transition-colors">
+                        <svg class="mx-auto h-12 w-12 text-gray-400" stroke="currentColor" fill="none" viewBox="0 0 48 48">
+                            <path d="M28 8H12a4 4 0 00-4 4v20m32-12v8m0 0v8a4 4 0 01-4 4H12a4 4 0 01-4-4v-4m32-4l-3.172-3.172a4 4 0 00-5.656 0L28 28M8 32l9.172-9.172a4 4 0 015.656 0L28 28m0 0l4 4m4-24h8m-4-4v8m-12 4h.02" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+                        </svg>
+                        <div class="mt-4">
+                            <span class="mt-2 block text-sm font-medium text-gray-900 dark:text-gray-300">
+                                {{ .locale.Tr "gist.new.drop-files" }}
+                            </span>
+                        </div>
+                        <p class="mt-2 text-xs text-gray-500">{{ .locale.Tr "gist.new.any-file-type" }}</p>
+                    </div>
+                    <input id="file-upload" name="file-upload" type="file" class="sr-only" multiple accept="*/*">
+                </label>
+                <div id="uploaded-files" class="space-y-2"></div>
+            </div>
+
             <div class="flex">
                 <button type="button" id="add-file" class="inline-flex items-center px-4 py-2 border border-transparent border-gray-200 dark:border-gray-700 text-sm font-medium rounded-md shadow-sm text-gray-700 dark:text-white bg-gray-100 dark:bg-gray-600 hover:bg-gray-200 dark:hover:bg-gray-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500">{{ .locale.Tr "gist.new.add-file" }}</button>
 
@@ -65,6 +83,11 @@
             {{ .csrfHtml }}
         </form>
 
+        <!-- Hidden template for new text editors -->
+        <div id="editor-template" class="hidden">
+            {{ template "_editor" dict "Filename" "" "Content" "" "Binary" false "locale" .locale }}
+        </div>
+
     </main>
 </div>