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TextEditor: Debounce update_preview() in on_change event

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This avoids lag spikes when undoing/redoing large chunks of HTML/CSS
with the HTML preview open. This had been bugging me when reducing
LibWeb issues in the text editor. The debounce timeout is 100ms
so the delay should not be noticeable.
This commit is contained in:
MacDue 2022-07-18 20:03:11 +01:00 committed by Linus Groh
parent cdcdc095df
commit 8266ebf3c6
Notes: sideshowbarker 2024-07-17 08:46:51 +09:00 
Author: https://github.com/MacDue
Commit: https://github.com/SerenityOS/serenity/commit/8266ebf3c6
Pull-request: https://github.com/SerenityOS/serenity/pull/14618
Reviewed-by: https://github.com/linusg
1 changed files with 4 additions and 2 deletions
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6
Userland/Applications/TextEditor/MainWidget.cpp
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@ -11,6 +11,7 @@
#include <AK/URL.h>
#include <Applications/TextEditor/TextEditorWindowGML.h>
#include <LibConfig/Client.h>
#include <LibCore/Debounce.h>
#include <LibCore/File.h>
#include <LibCpp/SyntaxHighlighter.h>
#include <LibDesktop/Launcher.h>
@ -63,9 +64,10 @@ MainWidget::MainWidget()
else
VERIFY_NOT_REACHED();
m_editor->on_change = [this] {
m_editor->on_change = Core::debounce([this] {
update_preview();
};
},
100);
m_editor->on_modified_change = [this](bool modified) {
window()->set_modified(modified);