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LibGUI+TextEditor: Make TextDocument modified state track undo stack

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This was quite unreliable before. Changes to the undo stack's modified
state are now reflected in the document's modified state, and the
GUI::TextEditor widget has its undo/redo actions updated automatically.

UndoStack is still a bit hard to understand due to the lazy coalescing
of commands, and that's something we should improve upon (e.g with more
explicit, incremental command merging.) But for now, this is a nice
improvement and undo/redo finally behaves in a way that feels natural.
This commit is contained in:
Andreas Kling 2021-05-08 13:40:33 +02:00
parent ee19f7c0aa
commit 2905e10513
4 changed files with 23 additions and 4 deletions
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5
Userland/Applications/TextEditor/MainWidget.cpp
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@ -59,7 +59,10 @@ MainWidget::MainWidget()
m_editor->on_change = [this] {
update_preview();
window()->set_modified(editor().document().is_modified());
};
m_editor->on_modified_change = [this](bool modified) {
window()->set_modified(modified);
};
m_page_view = *find_descendant_of_type_named<Web::OutOfProcessWebView>("webview");