File size: 4,146 Bytes
67ad93e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | interface DragActionOptions {
disable_click?: boolean;
accepted_types?: string | string[] | null;
mode?: "single" | "multiple" | "directory";
on_drag_change?: (dragging: boolean) => void;
on_files?: (files: File[]) => void;
}
type ActionReturn = {
update: (new_options: DragActionOptions) => void;
destroy: () => void;
};
export function create_drag(): {
drag: (node: HTMLElement, options: DragActionOptions) => ActionReturn;
open_file_upload: () => void;
} {
let hidden_input: HTMLInputElement;
let _options: DragActionOptions;
return {
drag(
node: HTMLElement,
options: DragActionOptions = {}
): {
update: (new_options: DragActionOptions) => void;
destroy: () => void;
} {
_options = options;
// Create and configure hidden file input
function setup_hidden_input(): void {
hidden_input = document.createElement("input");
hidden_input.type = "file";
hidden_input.style.display = "none";
hidden_input.setAttribute("aria-label", "File upload");
hidden_input.setAttribute("data-testid", "file-upload");
const accept_options = Array.isArray(_options.accepted_types)
? _options.accepted_types.join(",")
: _options.accepted_types || undefined;
if (accept_options) {
hidden_input.accept = accept_options;
}
hidden_input.multiple = _options.mode === "multiple" || false;
if (_options.mode === "directory") {
hidden_input.webkitdirectory = true;
hidden_input.setAttribute("directory", "");
hidden_input.setAttribute("mozdirectory", "");
}
node.appendChild(hidden_input);
}
setup_hidden_input();
function handle_drag(e: DragEvent): void {
e.preventDefault();
e.stopPropagation();
}
function handle_drag_enter(e: DragEvent): void {
e.preventDefault();
e.stopPropagation();
_options.on_drag_change?.(true);
}
function handle_drag_leave(e: DragEvent): void {
e.preventDefault();
e.stopPropagation();
_options.on_drag_change?.(false);
}
function handle_drop(e: DragEvent): void {
e.preventDefault();
e.stopPropagation();
_options.on_drag_change?.(false);
if (!e.dataTransfer?.files) return;
const files = Array.from(e.dataTransfer.files);
if (files.length > 0) {
_options.on_files?.(files);
}
}
function handle_click(): void {
if (!_options.disable_click) {
hidden_input.value = "";
hidden_input.click();
}
}
function handle_file_input_change(): void {
if (hidden_input.files) {
const files = Array.from(hidden_input.files);
if (files.length > 0) {
_options.on_files?.(files);
}
}
}
// Add all event listeners
node.addEventListener("drag", handle_drag);
node.addEventListener("dragstart", handle_drag);
node.addEventListener("dragend", handle_drag);
node.addEventListener("dragover", handle_drag);
node.addEventListener("dragenter", handle_drag_enter);
node.addEventListener("dragleave", handle_drag_leave);
node.addEventListener("drop", handle_drop);
node.addEventListener("click", handle_click);
hidden_input!.addEventListener("change", handle_file_input_change);
return {
update(new_options: DragActionOptions) {
_options = new_options;
// Recreate hidden input with new options
hidden_input.remove();
setup_hidden_input();
hidden_input.addEventListener("change", handle_file_input_change);
},
destroy() {
node.removeEventListener("drag", handle_drag);
node.removeEventListener("dragstart", handle_drag);
node.removeEventListener("dragend", handle_drag);
node.removeEventListener("dragover", handle_drag);
node.removeEventListener("dragenter", handle_drag_enter);
node.removeEventListener("dragleave", handle_drag_leave);
node.removeEventListener("drop", handle_drop);
node.removeEventListener("click", handle_click);
hidden_input.removeEventListener("change", handle_file_input_change);
hidden_input.remove();
}
};
},
open_file_upload(): void {
if (hidden_input) {
hidden_input.value = "";
hidden_input.click();
}
}
};
}
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