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feat: implement paste markdown text

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This commit is contained in:
Lucas.Xu 2022-11-09 09:50:00 +08:00
parent eb7356474c
commit 17536fdecb
1 changed files with 26 additions and 39 deletions
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65
frontend/app_flowy/packages/appflowy_editor/lib/src/service/internal_key_event_handlers/copy_paste_handler.dart
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@ -252,6 +252,31 @@ Delta _lineContentToDelta(String lineContent) {
return delta;
}
void _pasteMarkdown(EditorState editorState, String markdown) {
final selection =
editorState.service.selectionService.currentSelection.value?.normalized;
if (selection == null) {
return;
}
final lines = markdown.split('\n');
if (lines.length == 1) {
_pasteSingleLine(editorState, selection, lines[0]);
return;
}
var path = selection.end.path.next;
final node = editorState.document.nodeAtPath(selection.end.path);
if (node is TextNode && node.toPlainText().isEmpty) {
path = selection.end.path;
}
final document = markdownToDocument(markdown);
final transaction = editorState.transaction;
transaction.insertNodes(path, document.root.children);
editorState.apply(transaction);
}
void _handlePastePlainText(EditorState editorState, String plainText) {
final selection = editorState.cursorSelection?.normalized;
if (selection == null) {
@ -269,45 +294,7 @@ void _handlePastePlainText(EditorState editorState, String plainText) {
// single line
_pasteSingleLine(editorState, selection, lines.first);
} else {
final firstLine = lines[0];
final beginOffset = selection.end.offset;
final remains = lines.sublist(1);
final path = [...selection.end.path];
if (path.isEmpty) {
return;
}
final node =
editorState.document.nodeAtPath(selection.end.path)! as TextNode;
final insertedLineSuffix = node.delta.slice(beginOffset);
path[path.length - 1]++;
final tb = editorState.transaction;
final List<TextNode> nodes =
remains.map((e) => TextNode(delta: _lineContentToDelta(e))).toList();
final afterSelection =
_computeSelectionAfterPasteMultipleNodes(editorState, nodes);
// append remain text to the last line
if (nodes.isNotEmpty) {
final last = nodes.last;
nodes[nodes.length - 1] =
TextNode(delta: last.delta..addAll(insertedLineSuffix));
}
// insert first line
tb.updateText(
node,
Delta()
..retain(beginOffset)
..insert(firstLine)
..delete(node.delta.length - beginOffset));
// insert remains
tb.insertNodes(path, nodes);
tb.afterSelection = afterSelection;
editorState.apply(tb);
_pasteMarkdown(editorState, plainText);
}
}