[nostalgia/studio] Move OxFSTreeView out of Studio lib

src/nostalgia/studio/oxfstreeview.cpp

@@ -0,0 +1,225 @@
+/*
+ * Copyright 2016 - 2019 gtalent2@gmail.com
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <algorithm>
+
+#include <QDebug>
+#include <QDir>
+#include <QVector>
+
+#include "oxfstreeview.hpp"
+
+namespace nostalgia::studio {
+
+using namespace ox;
+
+OxFSFile::OxFSFile(PassThroughFS *fs, QString path, OxFSFile *parentItem) {
+	m_path = path;
+	m_parentItem = parentItem;
+
+	// find children
+	if (fs) {
+		QVector<QString> ls;
+		auto stat = fs->stat(static_cast<const char*>(m_path.toUtf8()));
+		if (!stat.error) {
+			if (stat.value.fileType == FileType_Directory) {
+				fs->ls(m_path.toUtf8(), [&ls](const char *name, ox::InodeId_t) {
+					ls.push_back(name);
+					return OxError(0);
+				});
+				std::sort(ls.begin(), ls.end());
+			}
+			auto p = m_path;
+			// make sure ends with path separator
+			if (fs->stat(p.toUtf8().data()).value.fileType == FileType_Directory &&
+				 p.size() && p.back() != QDir::separator()) {
+				p += QDir::separator();
+			}
+			for (auto name : ls) {
+				if (name != "." && name != "..") {
+					const auto path = m_path.size() ? m_path + '/' + name : name;
+					auto ch = new OxFSFile(fs, path, this);
+					m_childItems.push_back(ch);
+				}
+			}
+		}
+	}
+}
+
+OxFSFile::~OxFSFile() {
+	qDeleteAll(m_childItems);
+}
+
+void OxFSFile::appendChild(OxFSModel *model, QStringList pathItems, QString currentPath) {
+	if (pathItems.size()) {
+		auto target = pathItems[0];
+		currentPath += "/" + target;
+		int index = m_childItems.size();
+		for (int i = 0; i < m_childItems.size(); i++) {
+			if (m_childItems[i]->name() >= target) {
+				index = i;
+				break;
+			}
+		}
+
+		if (m_childItems.size() == index || m_childItems[index]->name() != target) {
+			auto idx = model->createIndex(row(), 0, this);
+			model->beginInsertRows(idx, index, index);
+			m_childItems.insert(index, new OxFSFile(nullptr, currentPath, this));
+			model->endInsertRows();
+		}
+
+		m_childItems[index]->appendChild(model, pathItems.mid(1), currentPath);
+	}
+}
+
+OxFSFile *OxFSFile::child(int row) {
+	if (row < m_childItems.size()) {
+		return m_childItems[row];
+	} else {
+		return nullptr;
+	}
+}
+
+int OxFSFile::childCount() const {
+	return m_childItems.size();
+}
+
+int OxFSFile::columnCount() const {
+	return 1;
+}
+
+QVariant OxFSFile::data(int) const {
+	return name();
+}
+
+int OxFSFile::row() const {
+	if (m_parentItem) {
+		return m_parentItem->m_childItems.indexOf(const_cast<OxFSFile*>(this));
+	} else {
+		return 0;
+	}
+}
+
+OxFSFile *OxFSFile::parentItem() {
+	return m_parentItem;
+}
+
+QString OxFSFile::name() const {
+	return m_path.mid(m_path.lastIndexOf("/") + 1);
+}
+
+QString OxFSFile::path() const {
+	return "/" + m_path;
+}
+
+
+// OxFSModel
+
+OxFSModel::OxFSModel(PassThroughFS *fs, QObject*) {
+	m_rootItem = new OxFSFile(fs, "");
+}
+
+OxFSModel::~OxFSModel() {
+	if (m_rootItem) {
+		delete m_rootItem;
+		m_rootItem = nullptr;
+	}
+}
+
+QVariant OxFSModel::data(const QModelIndex &index, int role) const {
+	if (!index.isValid() || role != Qt::DisplayRole) {
+		return QVariant();
+	} else {
+		OxFSFile *item = static_cast<OxFSFile*>(index.internalPointer());
+		return item->data(index.column());
+	}
+}
+
+Qt::ItemFlags OxFSModel::flags(const QModelIndex &index) const {
+	if (!index.isValid()) {
+		return 0;
+	} else {
+		return QAbstractItemModel::flags(index);
+	}
+}
+
+QVariant OxFSModel::headerData(int section, Qt::Orientation orientation, int role) const {
+	if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
+		return m_rootItem->data(section);
+	} else {
+		return QVariant();
+	}
+}
+
+QModelIndex OxFSModel::index(int row, int column, const QModelIndex &parent) const {
+	if (!hasIndex(row, column, parent)) {
+		return QModelIndex();
+	}
+
+	OxFSFile *parentItem;
+	if (!parent.isValid()) {
+		parentItem = m_rootItem;
+	} else {
+		parentItem = static_cast<OxFSFile*>(parent.internalPointer());
+	}
+
+	OxFSFile *childItem = parentItem->child(row);
+	if (childItem) {
+		return createIndex(row, column, childItem);
+	} else {
+		return QModelIndex();
+	}
+}
+
+QModelIndex OxFSModel::parent(const QModelIndex &index) const {
+	if (!index.isValid()) {
+		return QModelIndex();
+	}
+
+	OxFSFile *childItem = static_cast<OxFSFile*>(index.internalPointer());
+	OxFSFile *parentItem = childItem->parentItem();
+	if (parentItem == m_rootItem) {
+		return QModelIndex();
+	}
+
+	return createIndex(parentItem->row(), 0, parentItem);
+}
+
+int OxFSModel::rowCount(const QModelIndex &parent) const {
+	if (parent.column() > 0) {
+		return 0;
+	}
+
+	OxFSFile *parentItem;
+	if (!parent.isValid()) {
+		parentItem = m_rootItem;
+	} else {
+		parentItem = static_cast<OxFSFile*>(parent.internalPointer());
+	}
+
+	return parentItem->childCount();
+}
+
+int OxFSModel::columnCount(const QModelIndex &parent) const {
+	if (parent.isValid()) {
+		return static_cast<OxFSFile*>(parent.internalPointer())->columnCount();
+	} else {
+		return m_rootItem->columnCount();
+	}
+}
+
+void OxFSModel::updateFile(QString path) {
+	auto pathItems = path.split("/").mid(1);
+	m_rootItem->appendChild(this, pathItems, "");
+}
+
+void OxFSModel::setupModelData(const QStringList&, OxFSFile*) {
+}
+
+}