#include "filebrowserwidget.h"

#include <QTreeView>
#include <QVBoxLayout>
#include <QDir>

FileBrowserWidget::FileBrowserWidget(QWidget *parent)
    : QWidget(parent)
{
    setupUi();
    connectSignals();

    // 默认浏览当前工作目录
    setRootPath(QDir::currentPath());
}

void FileBrowserWidget::setupUi()
{
    m_model = new QFileSystemModel(this);
    m_model->setRootPath(QString()); // 稍后在 setRootPath 里设置

    m_view = new QTreeView(this);
    m_view->setModel(m_model);
    m_view->setHeaderHidden(true);
    m_view->setAnimated(true);

    auto *layout = new QVBoxLayout(this);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->addWidget(m_view);
    setLayout(layout);
}

void FileBrowserWidget::connectSignals()
{
    connect(m_view, &QTreeView::doubleClicked,
            this, [this](const QModelIndex &index) {
        if (!m_model)
            return;
        QString path = m_model->filePath(index);
        if (QFileInfo(path).isFile())
            emit fileOpenRequested(path);
    });
}

void FileBrowserWidget::setRootPath(const QString &path)
{
    if (!m_model)
        return;
    QModelIndex idx = m_model->setRootPath(path);
    m_view->setRootIndex(idx);
}