#include "TabManager.h"

TabManager::TabManager(QTabWidget* tabWidget, QObject* parent)
    : QObject(parent),
    m_tabWidget(tabWidget)
{
    Q_ASSERT(m_tabWidget);
}

void TabManager::hideTab(QWidget* page)
{
    if (!page || !m_tabWidget)
        return;

    int index = m_tabWidget->indexOf(page);
    if (index == -1)
        return;

    if (m_hiddenTabs.contains(page))
        return;

    TabInfo info;
    info.index = index;
    info.text = m_tabWidget->tabText(index);
    info.icon = m_tabWidget->tabIcon(index);
    info.toolTip = m_tabWidget->tabToolTip(index);

    m_hiddenTabs.insert(page, info);

    // 如果隐藏的是当前页，先切换，避免空白
    if (m_tabWidget->currentIndex() == index)
    {
        int next = (index > 0) ? index - 1 : 0;
        m_tabWidget->setCurrentIndex(next);
    }

    m_tabWidget->removeTab(index);
    emit tabHidden(page);
}

void TabManager::showTab(QWidget* page)
{
    if (!page || !m_tabWidget)
        return;

    if (!m_hiddenTabs.contains(page))
        return;

    TabInfo info = m_hiddenTabs.take(page);

    //int insertIndex = qMin(info.index, m_tabWidget->count());
    int insertIndex = m_tabWidget->count();
    m_tabWidget->insertTab(insertIndex, page, info.icon, info.text);
    m_tabWidget->setTabToolTip(insertIndex, info.toolTip);

    emit tabShown(page);
}

bool TabManager::isHidden(QWidget* page) const
{
    return m_hiddenTabs.contains(page);
}