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LibVT: Make terminal scrollback max size configurable

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This commit is contained in:
AnotherTest 2020-11-29 17:56:02 +03:30 • committed by Andreas Kling
parent 158fe9d9ca
commit 5c8b48053e
2 changed files with 32 additions and 1 deletions
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30
Libraries/LibVT/Terminal.h
View file

@ -93,7 +93,31 @@ public:
return m_lines[index];
}
size_t max_history_size() const { return 500; }
size_t max_history_size() const { return m_max_history_lines; }
void set_max_history_size(size_t value)
{
if (value == 0) {
m_max_history_lines = 0;
m_history_start = 0;
m_history.clear();
m_client.terminal_history_changed();
return;
}
if (m_max_history_lines > value) {
NonnullOwnPtrVector<Line> new_history;
new_history.ensure_capacity(value);
auto existing_line_count = min(m_history.size(), value);
for (size_t i = m_history.size() - existing_line_count; i < m_history.size(); ++i) {
auto j = (m_history_start + i) % m_history.size();
new_history.unchecked_append(move(static_cast<Vector<NonnullOwnPtr<Line>>&>(m_history).at(j)));
}
m_history = move(new_history);
m_history_start = 0;
m_client.terminal_history_changed();
}
m_max_history_lines = value;
}
size_t history_size() const { return m_history.size(); }
void inject_string(const StringView&);
@ -156,6 +180,9 @@ private:
NonnullOwnPtrVector<Line> m_history;
void add_line_to_history(NonnullOwnPtr<Line>&& line)
{
if (max_history_size() == 0)
return;
if (m_history.size() < max_history_size()) {
ASSERT(m_history_start == 0);
m_history.append(move(line));
@ -210,6 +237,7 @@ private:
Vector<bool> m_horizontal_tabs;
u8 m_final { 0 };
u32 m_last_code_point { 0 };
size_t m_max_history_lines { 1024 };
};
}

3
Libraries/LibVT/TerminalWidget.h
View file

@ -79,6 +79,9 @@ public:
int scroll_length() const;
void set_scroll_length(int);
size_t max_history_size() const { return m_terminal.max_history_size(); }
void set_max_history_size(size_t value) { m_terminal.set_max_history_size(value); }
GUI::Action& copy_action() { return *m_copy_action; }
GUI::Action& paste_action() { return *m_paste_action; }
GUI::Action& clear_including_history_action() { return *m_clear_including_history_action; }