From c42f9001c4007bb865f9a1b3d0a86df504df3c1a Mon Sep 17 00:00:00 2001
From: Vincent Chan <okcdz@diverse.space>
Date: Thu, 11 Aug 2022 16:40:07 +0800
Subject: [PATCH] feat: select all

---
 .../copy_paste_handler.dart                   |  1 -
 .../default_key_event_handlers.dart           |  2 ++
 .../select_all_handler.dart                   | 26 +++++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/select_all_handler.dart

diff --git a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/copy_paste_handler.dart b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/copy_paste_handler.dart
index 0b87fc0fd4..a5f392a4eb 100644
--- a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/copy_paste_handler.dart
+++ b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/copy_paste_handler.dart
@@ -1,5 +1,4 @@
 import 'package:flowy_editor/flowy_editor.dart';
-import 'package:flowy_editor/src/service/keyboard_service.dart';
 import 'package:flowy_editor/src/infra/html_converter.dart';
 import 'package:flowy_editor/src/document/node_iterator.dart';
 import 'package:flutter/material.dart';
diff --git a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/default_key_event_handlers.dart b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/default_key_event_handlers.dart
index d03211461c..f99caab04a 100644
--- a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/default_key_event_handlers.dart
+++ b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/default_key_event_handlers.dart
@@ -7,6 +7,7 @@ import 'package:flowy_editor/src/service/internal_key_event_handlers/redo_undo_h
 import 'package:flowy_editor/src/service/internal_key_event_handlers/slash_handler.dart';
 import 'package:flowy_editor/src/service/internal_key_event_handlers/update_text_style_by_command_x_handler.dart';
 import 'package:flowy_editor/src/service/internal_key_event_handlers/whitespace_handler.dart';
+import 'package:flowy_editor/src/service/internal_key_event_handlers/select_all_handler.dart';
 import 'package:flowy_editor/src/service/keyboard_service.dart';
 
 List<FlowyKeyEventHandler> defaultKeyEventHandlers = [
@@ -19,4 +20,5 @@ List<FlowyKeyEventHandler> defaultKeyEventHandlers = [
   enterWithoutShiftInTextNodesHandler,
   updateTextStyleByCommandXHandler,
   whiteSpaceHandler,
+  selectAllHandler,
 ];
diff --git a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/select_all_handler.dart b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/select_all_handler.dart
new file mode 100644
index 0000000000..f99569218c
--- /dev/null
+++ b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/select_all_handler.dart
@@ -0,0 +1,26 @@
+import 'package:flowy_editor/flowy_editor.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+KeyEventResult _selectAll(EditorState editorState) {
+  if (editorState.document.root.children.isEmpty) {
+    return KeyEventResult.handled;
+  }
+  final firstNode = editorState.document.root.children.first;
+  final lastNode = editorState.document.root.children.last;
+  var offset = 0;
+  if (lastNode is TextNode) {
+    offset = lastNode.delta.length;
+  }
+  editorState.updateCursorSelection(Selection(
+      start: Position(path: firstNode.path, offset: 0),
+      end: Position(path: lastNode.path, offset: offset)));
+  return KeyEventResult.handled;
+}
+
+FlowyKeyEventHandler selectAllHandler = (editorState, event) {
+  if (event.isMetaPressed && event.logicalKey == LogicalKeyboardKey.keyA) {
+    return _selectAll(editorState);
+  }
+  return KeyEventResult.ignored;
+};