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@@ -1,4 +1,3 @@
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-import "dart:math";
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import 'package:appflowy_editor/appflowy_editor.dart';
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import 'package:appflowy_editor/src/extensions/text_node_extensions.dart';
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import 'package:appflowy_editor/src/service/default_text_operations/format_rich_text_style.dart';
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@@ -49,7 +48,7 @@ ShortcutEventHandler backquoteToCodeHandler = (editorState, event) {
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.substring(selection.start.offset, selection.end.offset);
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// toggle code style when selected some text
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- if (selectionText.length > 0) {
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+ if (selectionText.isNotEmpty) {
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formatEmbedCode(editorState);
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return KeyEventResult.handled;
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}
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@@ -187,3 +186,58 @@ ShortcutEventHandler doubleTildeToStrikethrough = (editorState, event) {
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return KeyEventResult.handled;
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};
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+
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+/// To create a link, enclose the link text in brackets (e.g., [link text]).
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+/// Then, immediately follow it with the URL in parentheses (e.g., (https://example.com)).
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+ShortcutEventHandler markdownLinkToLinkHandler = (editorState, event) {
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+ final selectionService = editorState.service.selectionService;
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+ final selection = selectionService.currentSelection.value;
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+ final textNodes = selectionService.currentSelectedNodes.whereType<TextNode>();
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+ if (selection == null || !selection.isSingle || textNodes.length != 1) {
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+ return KeyEventResult.ignored;
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+ }
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+
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+ // find all of the indexs for important characters
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+ final textNode = textNodes.first;
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+ final text = textNode.toRawString();
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+ final firstOpeningBracket = text.indexOf('[');
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+ final firstClosingBracket = text.indexOf(']');
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+
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+ // use regex to validate the format of the link
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+ // note: this enforces that the link has http or https
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+ final regexp = RegExp(r'\[([\w\s\d]+)\]\(((?:\/|https?:\/\/)[\w\d./?=#]+)$');
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+ final match = regexp.firstMatch(text);
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+ if (match == null) {
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+ return KeyEventResult.ignored;
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+ }
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+
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+ // extract the text and the url of the link
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+ final linkText = match.group(1);
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+ final linkUrl = match.group(2);
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+
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+ // Delete the initial opening bracket,
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+ // update the href attribute of the text surrounded by [ ] to the url,
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+ // delete everything after the text,
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+ // and update the cursor position.
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+ TransactionBuilder(editorState)
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+ ..deleteText(textNode, firstOpeningBracket, 1)
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+ ..formatText(
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+ textNode,
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+ firstOpeningBracket,
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+ firstClosingBracket - firstOpeningBracket - 1,
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+ {
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+ BuiltInAttributeKey.href: linkUrl,
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+ },
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+ )
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+ ..deleteText(textNode, firstClosingBracket - 1,
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+ selection.end.offset - firstClosingBracket)
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+ ..afterSelection = Selection.collapsed(
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+ Position(
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+ path: textNode.path,
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+ offset: firstOpeningBracket + linkText!.length,
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+ ),
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+ )
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+ ..commit();
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+
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+ return KeyEventResult.handled;
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+};
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