Add validation to the new project wizard

src/studio/lib/newwizard.cpp

@@ -6,7 +6,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include <iostream>
+#include <QFileDialog>
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QLineEdit>
@@ -18,16 +18,22 @@
 namespace nostalgia {
 namespace studio {
 
-using namespace std;
-
 WizardSelect::WizardSelect() {
 	m_listWidget = new QListWidget(this);
 	auto layout = new QVBoxLayout(this);
 	layout->addWidget(m_listWidget);
 	setLayout(layout);
 
-	connect(m_listWidget, &QListWidget::activated, this, &WizardSelect::itemSelected);
-	connect(m_listWidget, &QListWidget::clicked, this, &WizardSelect::itemSelected);
+	connect(m_listWidget, &QListWidget::currentRowChanged, this, &WizardSelect::itemSelected);
+	connect(m_listWidget, &QListWidget::itemSelectionChanged, [this]() {
+			m_complete = true;
+			emit completeChanged();
+		}
+	);
+	connect(m_listWidget, &QListWidget::doubleClicked, [this]() {
+			wizard()->next();
+		}
+	);
 }
 
 void WizardSelect::initializePage() {
@@ -44,80 +50,174 @@ bool WizardSelect::isComplete() const {
 	return m_complete;
 }
 
-bool WizardSelect::isFinalPage() const {
-	return false;
-}
-
 int WizardSelect::nextId() const {
 	return m_nextId;
 }
 
-void WizardSelect::itemSelected(const QModelIndex &idx) {
-	m_complete = true;
-	auto w = wizard();
+void WizardSelect::itemSelected(int row) {
+	if (row > -1) {
+		auto w = wizard();
 
-	if (nextId() > -1) {
-		w->removePage(nextId());
-		m_nextId = -1;
-	}
+		if (nextId() > -1) {
+			w->removePage(nextId());
+			m_nextId = -1;
+		}
 
-	auto selected = m_listWidget->currentItem()->text();
-	if (m_options.contains(selected)) {
-		m_nextId = w->addPage(m_options[selected]());
-		// for some reason the continue button only appears correctly after remove runs
-		w->removePage(nextId());
-		m_nextId = w->addPage(m_options[selected]());
+		auto selected = m_listWidget->currentItem()->text();
+		if (m_options.contains(selected)) {
+			m_nextId = w->addPage(m_options[selected]());
+			// for some reason the continue button only appears correctly after remove runs
+			w->removePage(nextId());
+			m_nextId = w->addPage(m_options[selected]());
+		}
 	}
 }
 
 
-
-Wizard::FormPage::FormPage() {
+WizardFormPage::WizardFormPage() {
 	m_layout = new QGridLayout(this);
 	m_layout->setColumnMinimumWidth(0, 20);
 	this->setLayout(m_layout);
 }
 
-Wizard::FormPage::~FormPage() {
+WizardFormPage::~WizardFormPage() {
 	for (auto l : m_subLayout) {
 		delete l;
 	}
 }
 
-void Wizard::FormPage::addLineEdit(QString displayName, QString fieldName) {
+void WizardFormPage::initializePage() {
+	for (auto it = m_fields.begin(); it != m_fields.end(); it++) {
+		auto key = it.key();
+		auto le = m_fields[key].lineEdit;
+		auto defaultVal = it.value().defaultValue;
+		if (le) {
+			le->setText(defaultVal);
+		}
+	}
+}
+
+bool WizardFormPage::validatePage() {
+	bool retval = true;
+
+	// check validators
+	for (auto f : m_fields) {
+		if (f.validator != nullptr) {
+			if (f.validator(f.lineEdit->text()) != 0) {
+				retval = false;
+				break;
+			}
+		}
+	}
+
+	// clear error
+	if (retval) {
+		showValidationError("");
+	}
+
+	return retval;
+}
+
+void WizardFormPage::addLineEdit(QString displayName, QString fieldName, QString defaultVal) {
 	auto lbl = new QLabel(displayName, this);
 	auto le = new QLineEdit(this);
 	lbl->setBuddy(le);
 
-	m_layout->addWidget(lbl, currentLine, 0);
-	m_layout->addWidget(le, currentLine, 1);
+	m_layout->addWidget(lbl, m_currentLine, 0);
+	m_layout->addWidget(le, m_currentLine, 1);
+
+	m_fields[fieldName].defaultValue = defaultVal;
+	m_fields[fieldName].lineEdit = le;
 
 	registerField(fieldName, le);
 
-	currentLine++;
+	connect(le, &QLineEdit::textChanged, [this, fieldName, le](QString txt) {
+			if (m_fields[fieldName].value == "" && txt != "") {
+				m_validFields++;
+			} else if (m_fields[fieldName].value != "" && txt == "") {
+				m_validFields--;
+			}
+			m_fields[fieldName].value = txt;
+			emit completeChanged();
+		}
+	);
+
+	m_currentLine++;
 }
 
-void Wizard::FormPage::addFileBrowse(QString displayName, QString fieldName, QString defaultVal) {
+void WizardFormPage::addDirBrowse(QString displayName, QString fieldName, QString defaultVal) {
 	auto layout = new QHBoxLayout();
 	auto lbl = new QLabel(displayName, this);
-	auto le = new QLineEdit(this);
+	auto le = new QLineEdit("", this);
 	auto btn = new QPushButton("Browse...", this);
 	lbl->setBuddy(le);
 
 	layout->addWidget(le);
 	layout->addWidget(btn);
-	m_layout->addWidget(lbl, currentLine, 0);
-	m_layout->addLayout(layout, currentLine, 1);
+	m_layout->addWidget(lbl, m_currentLine, 0);
+	m_layout->addLayout(layout, m_currentLine, 1);
 
 	m_subLayout.push_back(layout);
+	m_fields[fieldName].defaultValue = defaultVal;
+	m_fields[fieldName].lineEdit = le;
+	m_fields[fieldName].validator = [this](QString path) {
+		if (!QDir(path).exists()) {
+			showValidationError(tr("Specified Project Path directory does not exist."));
+			return 1;
+		} else {
+			return 0;
+		}
+	};
+
 	registerField(fieldName, le);
 
-	currentLine++;
+	connect(le, &QLineEdit::textChanged, [this, fieldName, le](QString txt) {
+			if (m_fields[fieldName].value == "" && txt != "") {
+				m_validFields++;
+			} else if (m_fields[fieldName].value != "" && txt == "") {
+				m_validFields--;
+			}
+			m_fields[fieldName].value = txt;
+			emit completeChanged();
+		}
+	);
+
+	connect(btn, &QPushButton::clicked, [this, defaultVal, le]() {
+			auto p = QFileDialog::getExistingDirectory(this, tr("Select Directory..."), defaultVal);
+			if (p != "") {
+				le->setText(p);
+			}
+		}
+	);
+
+	m_currentLine++;
+}
+
+void WizardFormPage::showValidationError(QString msg) {
+	// create label if it is null
+	if (!m_errorMsg) {
+		m_errorMsg = new QLabel(this);
+		m_layout->addWidget(m_errorMsg, m_currentLine, 0, m_currentLine, 2);
+
+		// set text color
+		auto pal = m_errorMsg->palette();
+		pal.setColor(m_errorMsg->backgroundRole(), Qt::red);
+		pal.setColor(m_errorMsg->foregroundRole(), Qt::red);
+		m_errorMsg->setPalette(pal);
+	}
+
+	// set message
+	if (msg != "") {
+		m_errorMsg->setText(tr("Error: ") + msg);
+	} else {
+		m_errorMsg->setText("");
+	}
 }
 
 
 Wizard::Wizard(QWidget *parent): QWizard(parent) {
 	setWindowTitle(tr("New..."));
+	setModal(true);
 }
 
 }