1/* Copyright (c) 2013-2016 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#include "DebuggerConsole.h"
 7
 8#include "DebuggerConsoleController.h"
 9
10#include <QScrollBar>
11
12using namespace QGBA;
13
14DebuggerConsole::DebuggerConsole(DebuggerConsoleController* controller, QWidget* parent)
15	: QWidget(parent)
16	, m_consoleController(controller)
17{
18	m_ui.setupUi(this);
19
20	m_ui.prompt->installEventFilter(this);
21
22	connect(m_ui.prompt, &QLineEdit::returnPressed, this, &DebuggerConsole::postLine);
23	connect(controller, &DebuggerConsoleController::log, this, &DebuggerConsole::log);
24	connect(m_ui.breakpoint, &QAbstractButton::clicked, controller, &DebuggerController::attach);
25	connect(m_ui.breakpoint, &QAbstractButton::clicked, controller, &DebuggerController::breakInto);
26}
27
28void DebuggerConsole::log(const QString& line) {
29	m_ui.log->moveCursor(QTextCursor::End);
30	m_ui.log->insertPlainText(line);
31	m_ui.log->verticalScrollBar()->setValue(m_ui.log->verticalScrollBar()->maximum());
32}
33
34void DebuggerConsole::postLine() {
35	m_consoleController->attach();
36	QString line = m_ui.prompt->text();
37	m_ui.prompt->clear();
38	if (line.isEmpty()) {
39		m_consoleController->enterLine(QString("\n"));
40	} else {
41		m_history.append(line);
42		m_historyOffset = 0;
43		log(QString("> %1\n").arg(line));
44		m_consoleController->enterLine(line);
45	}
46}
47
48bool DebuggerConsole::eventFilter(QObject*, QEvent* event) {
49	if (event->type() != QEvent::KeyPress) {
50		return false;
51	}
52	if (m_history.isEmpty()) {
53		return false;
54	}
55	QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
56	switch (keyEvent->key()) {
57	case Qt::Key_Down:
58		if (m_historyOffset <= 0) {
59			return false;
60		}
61		--m_historyOffset;
62		break;
63	case Qt::Key_Up:
64		if (m_historyOffset >= m_history.size()) {
65			return false;
66		}
67		++m_historyOffset;
68		break;
69	case Qt::Key_End:
70		m_historyOffset = 0;
71		break;
72	case Qt::Key_Home:
73		m_historyOffset = m_history.size();
74		break;
75	default:
76		return false;
77	}
78	if (m_historyOffset == 0) {
79		m_ui.prompt->clear();
80	} else {
81		m_ui.prompt->setText(m_history[m_history.size() - m_historyOffset]);
82	}
83	return true;
84}