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LibGUI: Add up & down arrow hooks and input history to TextBox

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This patch adds the ability to enable "input history" on a textbox,
allowing to navigate between the history with the arrow keys.

Also removes a custom TextBox subclass from HackStudio that added
the exact same hooks, and moves it to use the now standard ones.
This commit is contained in:
FalseHonesty 2020-05-26 22:17:06 -04:00 • committed by Andreas Kling
parent 893a9ff5b0
commit 139dbfd5b5
4 changed files with 74 additions and 28 deletions
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51
Libraries/LibGUI/TextBox.cpp
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@ -37,4 +37,55 @@ TextBox::~TextBox()
{
}
void TextBox::keydown_event(GUI::KeyEvent& event)
{
TextEditor::keydown_event(event);
if (event.key() == Key_Up) {
if (on_up_pressed)
on_up_pressed();
if (has_no_history() || !can_go_backwards_in_history())
return;
if (m_history_index >= static_cast<int>(m_history.size()))
m_saved_input = text();
m_history_index--;
set_text(m_history[m_history_index]);
} else if (event.key() == Key_Down) {
if (on_down_pressed)
on_down_pressed();
if (has_no_history())
return;
if (can_go_forwards_in_history()) {
m_history_index++;
set_text(m_history[m_history_index]);
} else if (m_history_index < static_cast<int>(m_history.size())) {
m_history_index++;
set_text(m_saved_input);
}
}
}
void TextBox::add_current_text_to_history()
{
if (!m_history_enabled)
return;
auto input = text();
if (m_history.is_empty() || m_history.last() != input)
add_input_to_history(input);
m_history_index = static_cast<int>(m_history.size());
m_saved_input = {};
}
void TextBox::add_input_to_history(String input)
{
m_history.append(move(input));
m_history_index++;
}
}