1 files changed, 99 insertions, 0 deletions
diff --git a/gui/dynamicwaysentry.cc b/gui/dynamicwaysentry.cc
new file mode 100644
index 0000000..e1f740e
--- /dev/null
+++ b/gui/dynamicwaysentry.cc
@@ -0,0 +1,99 @@
+// Simulator for the RISC-V[ECTOR] mini-ISA
+// Copyright (C) 2025 Siddarth Suresh
+// Copyright (C) 2025 bdunahu
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "dynamicwaysentry.h"
+#include <QLabel>
+#include <QLineEdit>
+#include <QStringList>
+#include <QVBoxLayout>
+#include <QVector>
+#include <QWidget>
+
+DynamicWaysEntry::DynamicWaysEntry(QWidget *parent) : QWidget(parent)
+{
+	this->l = new QVBoxLayout(this);
+	this->l->setAlignment(Qt::AlignTop);
+	this->l->setSpacing(6);
+	this->l->setContentsMargins(0, 0, 0, 0);
+	this->setLayout(l);
+	this->add_field();
+}
+
+QStringList DynamicWaysEntry::get_entries() const { return this->entries; }
+
+int DynamicWaysEntry::parse_valid_way(QString t)
+{
+	bool s;
+	int i;
+	i = t.toInt(&s);
+	return (s && i >= 0 && 5 > i) ? i : -1;
+}
+
+// TODO if you enter something valid and then make it invalid,
+// the next box still shows
+void DynamicWaysEntry::on_number_enter(const QString &t)
+{
+	int i;
+	QLineEdit *sender_field;
+
+	sender_field = qobject_cast<QLineEdit *>(sender());
+	i = fields.indexOf(sender_field);
+	entries[i] = t;
+
+	if (i == this->fields.size() - 1 && !t.isEmpty() &&
+		(this->parse_valid_way(t) > 0) && fields.size() < 4)
+		add_field();
+
+	// TODO, unlink, don't trash everything after
+	if (t.isEmpty()) {
+		while (this->fields.size() > i + 1) {
+			remove_last_field();
+		}
+		while (entries.size() > fields.size()) {
+			entries.removeLast();
+		}
+	}
+}
+
+void DynamicWaysEntry::add_field()
+{
+	QLineEdit *f;
+
+	f = new QLineEdit(this);
+	f->setPlaceholderText("# ways (a power of 2)");
+
+	this->l->addWidget(f);;
+	this->fields.append(f);
+	this->entries.append(QString());
+	connect(
+		f, &QLineEdit::textChanged, this, &DynamicWaysEntry::on_number_enter);
+}
+
+void DynamicWaysEntry::remove_last_field()
+{
+	QLineEdit *f;
+
+	if (this->fields.isEmpty())
+		return;
+
+	f = this->fields.takeLast();
+	this->l->removeWidget(f);
+	f->deleteLater();
+
+	if (!this->entries.isEmpty())
+		entries.removeLast();
+}