#include "nmWellPressureFlowPage.h"

#include "iUnitGroup.h"
#include "iUnitHelper.h"
#include "iUnitItem.h"
#include "nmDataWellBase.h"
#include "nmWxPressFlowChartWidget.h"
#include "ZxBaseUtil.h"
#include "ZxTableHeaderViewUnit.h"

#include <QAbstractItemView>
#include <QComboBox>
#include <QHBoxLayout>
#include <QHeaderView>
#include <QLabel>
#include <QList>
#include <QPalette>
#include <QSplitter>
#include <QStackedWidget>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QStringList>
#include <QTableWidget>
#include <QTableWidgetItem>
#include <QVBoxLayout>

namespace
{
QString preferredTimeUnit()
{
    return QLatin1String("h");
}

QString preferredFlowUnit()
{
    return QString::fromUtf8("m\xC2\xB3/d");
}

iUnitGroup* resolveUnitGroup(const QStringList& listCandidates,
                             QString& sResolvedUnit)
{
    for (int nIndex = 0; nIndex < listCandidates.size(); ++nIndex)
    {
        const QString& sCandidate = listCandidates[nIndex];
        iUnitGroup* pUnitGroup =
                iUnitHelper::getUnitGroupByUnit(sCandidate);
        if (pUnitGroup == nullptr)
        {
            continue;
        }

        int nUnitIndex = pUnitGroup->indexOf(sCandidate);
        QStringList listUnitNames = pUnitGroup->getAllUnitNames();
        if (nUnitIndex < 0 || nUnitIndex >= listUnitNames.size())
        {
            continue;
        }

        sResolvedUnit = listUnitNames[nUnitIndex];
        return pUnitGroup;
    }

    sResolvedUnit = listCandidates.isEmpty()
            ? QString() : listCandidates.first();
    return nullptr;
}

QLabel* createEmptyLabel(const QString& sText, QWidget* pParent)
{
    QLabel* pLabel = new QLabel(sText, pParent);
    pLabel->setAlignment(Qt::AlignCenter);
    QPalette oPalette = pLabel->palette();
    oPalette.setColor(QPalette::WindowText,
                      pParent->palette().color(QPalette::Mid));
    pLabel->setPalette(oPalette);
    return pLabel;
}

QString displayValueText(double dValue, int nDigit)
{
    if (nDigit <= 0)
    {
        return QString::number(dValue, 'f', 0);
    }
    return ZxBaseUtil::getValidStr(dValue, nDigit);
}

// 显示相下拉框只列出实际出现过非零流量的相；多相表中的固定全零列
// 仍保留在井记录和求解输入中，但不应显示成该井存在对应相产量。
bool hasRealPhaseData(const QVector<QPointF>& vecPoints)
{
    int nStartIndex = 0;
    if (!vecPoints.isEmpty() &&
            vecPoints.first().x() == 0.0 &&
            vecPoints.first().y() == 0.0)
    {
        nStartIndex = 1;
    }
    for (int nIndex = nStartIndex; nIndex < vecPoints.size(); ++nIndex)
    {
        if (vecPoints[nIndex].y() != 0.0)
        {
            return true;
        }
    }
    return false;
}

// 压力/流量记录下拉框只显示稳定的 Gauge Code，避免顶部工具栏过宽。
// 异常旧数据没有 Code 时，才回退到框架名称。
QString formatGaugeRecordLabel(const QString& sGaugeName,
                               const QString& sGaugeCode,
                               const QString& sGaugeTime)
{
    Q_UNUSED(sGaugeTime);
    return sGaugeCode.isEmpty() ? sGaugeName : sGaugeCode;
}

QString gaugeMetadataText(const QString& sText)
{
    return sText.trimmed().isEmpty()
            ? nmWellPressureFlowPage::tr("(none)") : sText;
}

QString gaugeNameText(const QString& sGaugeName)
{
    return sGaugeName.trimmed().isEmpty()
            ? nmWellPressureFlowPage::tr("(unnamed)") : sGaugeName;
}

QString gaugeRecordToolTip(const QString& sGaugeName,
                           const QString& sGaugeCode,
                           const QString& sGaugeTime)
{
    QStringList listLines;
    listLines << nmWellPressureFlowPage::tr("Curve name: %1")
                    .arg(gaugeNameText(sGaugeName));
    listLines << nmWellPressureFlowPage::tr("Gauge Code: %1")
                    .arg(gaugeMetadataText(sGaugeCode));
    listLines << nmWellPressureFlowPage::tr("Measurement time: %1")
                    .arg(gaugeMetadataText(sGaugeTime));
    return listLines.join(QLatin1String("\n"));
}

void disableGaugeComboItem(QComboBox* pCombo, int nItemIndex)
{
    QStandardItemModel* pModel =
            qobject_cast<QStandardItemModel*>(pCombo->model());
    if (pModel == nullptr)
    {
        return;
    }
    QStandardItem* pItem = pModel->item(nItemIndex);
    if (pItem != nullptr)
    {
        pItem->setFlags(pItem->flags() & ~Qt::ItemIsEnabled);
    }
}

void updatePreviewComboToolTip(QComboBox* pCombo)
{
    if (pCombo == nullptr || pCombo->currentIndex() < 0 ||
            pCombo->itemData(pCombo->currentIndex()).toString().isEmpty())
    {
        if (pCombo != nullptr)
        {
            pCombo->setToolTip(QString());
        }
        return;
    }

    QString sToolTip = pCombo->itemData(
            pCombo->currentIndex(), Qt::ToolTipRole).toString();
    if (!sToolTip.isEmpty())
    {
        sToolTip += QLatin1Char('\n');
    }
    sToolTip += nmWellPressureFlowPage::tr(
            "Preview only; calculation settings are unchanged.");
    pCombo->setToolTip(sToolTip);
}

// 统一向压力/流量记录下拉框追加一项；异常记录保留状态提示但不可选。
void appendGaugeComboItem(QComboBox* pCombo,
                          const QString& sGaugeName,
                          const QString& sGaugeCode,
                          const QString& sGaugeTime,
                          NM_GAUGE_RECORD_STATUS eStatus)
{
    QString sLabel = formatGaugeRecordLabel(sGaugeName, sGaugeCode, sGaugeTime);
    switch (eStatus)
    {
    case NM_GaugeRecord_InvalidIdentity:
        sLabel += nmWellPressureFlowPage::tr(" (Invalid)");
        break;
    case NM_GaugeRecord_Empty:
        sLabel += nmWellPressureFlowPage::tr(" (Empty)");
        break;
    case NM_GaugeRecord_Corrupt:
        sLabel += nmWellPressureFlowPage::tr(" (Corrupt)");
        break;
    default:
        break;
    }

    pCombo->addItem(sLabel, sGaugeCode);
    const int nItemIndex = pCombo->count() - 1;
    pCombo->setItemData(nItemIndex,
            gaugeRecordToolTip(sGaugeName, sGaugeCode, sGaugeTime),
            Qt::ToolTipRole);
    if (eStatus != NM_GaugeRecord_Usable)
    {
        disableGaugeComboItem(pCombo, nItemIndex);
    }
}

}

nmWellPressureFlowPage::nmWellPressureFlowPage(QWidget* pParent)
    : QWidget(pParent),
      m_pWell(nullptr),
      m_pContentStack(nullptr),
      m_pHorizontalSplitter(nullptr),
      m_pChartSplitter(nullptr),
      m_pPressureChartStack(nullptr),
      m_pFlowChartStack(nullptr),
      m_pFlowTableStack(nullptr),
      m_pPressureChart(nullptr),
      m_pFlowChart(nullptr),
      m_pFlowTable(nullptr),
      m_pFlowHeader(nullptr),
      m_pTimeUnitGroup(nullptr),
      m_pFlowUnitGroup(nullptr),
      m_sTimeBaseUnit(preferredTimeUnit()),
      m_sFlowBaseUnit(preferredFlowUnit()),
      m_sTimeUnit(preferredTimeUnit()),
      m_sFlowUnit(preferredFlowUnit()),
      m_nTimeDigit(6),
      m_nFlowDigit(6),
      m_nSelectedFlowSegment(-1),
      m_pRecordSelectionBar(nullptr),
      m_pPressureGaugeCombo(nullptr),
      m_pFlowGaugeCombo(nullptr),
      m_pDisplayPhaseCombo(nullptr),
      m_pDisplayPhaseContainer(nullptr),
      m_eDisplayPhase(PHASE_UNKNOWN)
{
    createUi();
    initializeUnitSupport();
    resetDataViews();
}

void nmWellPressureFlowPage::setWell(nmDataWellBase* pWell)
{
    if (m_pWell == pWell)
    {
        return;
    }

    m_pWell = pWell;
    m_sPreviewPressureGaugeCode = pWell == nullptr
            ? QString() : pWell->getSelectedPressureGaugeCode();
    m_sPreviewFlowGaugeCode = pWell == nullptr
            ? QString() : pWell->getSelectedFlowGaugeCode();
    resetDataViews();
}

void nmWellPressureFlowPage::refreshData()
{
    if (m_pWell == nullptr)
    {
        resetDataViews();
        return;
    }

    // 第一步：恢复页面自己的预览记录，不修改井对象保存的计算记录选择。
    populatePressureGaugeCombo();
    populateFlowGaugeCombo();
    populateDisplayPhaseCombo(currentFlowRecord());

    // 第二步：直接从预览记录复制数据，后续记录、相别和单位切换都不回写井对象。
    const nmPressureGaugeRecord* pPressureRecord = currentPressureRecord();
    const nmFlowGaugeRecord* pFlowRecord = currentFlowRecord();
    QVector<QPointF> vecRawPressurePoints = pPressureRecord == nullptr
            ? QVector<QPointF>() : pPressureRecord->vecPressurePoints;
    QVector<QPointF> vecRawFlowPoints;
    if (pFlowRecord != nullptr)
    {
        switch (m_eDisplayPhase)
        {
        case PHASE_Oil:
            vecRawFlowPoints = pFlowRecord->vecOilPoints;
            break;
        case PHASE_Gas:
            vecRawFlowPoints = pFlowRecord->vecGasPoints;
            break;
        case PHASE_Water:
            vecRawFlowPoints = pFlowRecord->vecWaterPoints;
            break;
        default:
            break;
        }
    }

    // 第三步：单位服务可能晚于页面构造完成，再刷新一次可用单位组。
    initializeUnitSupport();

    m_vecRawPressurePoints = vecRawPressurePoints;
    m_vecRawFlowPoints = vecRawFlowPoints;

    QVector<QPointF> vecTableFlowPoints;
    int nTimeDigit = m_nTimeDigit;
    int nFlowDigit = m_nFlowDigit;
    if (!buildFlowTableData(m_sTimeUnit,
                            m_sFlowUnit,
                            vecTableFlowPoints,
                            nTimeDigit,
                            nFlowDigit))
    {
        // 当前显示单位不可用时回退基准单位，禁止继续展示旧井快照。
        m_sTimeUnit = m_sTimeBaseUnit;
        m_sFlowUnit = m_sFlowBaseUnit;
        if (!buildFlowTableData(m_sTimeUnit,
                                m_sFlowUnit,
                                vecTableFlowPoints,
                                nTimeDigit,
                                nFlowDigit))
        {
            resetDataViews();
            updateUnitHeader();
            return;
        }
    }

    // 第三步：换算与精度读取全部成功后再提交，曲线始终读取原始数据。
    m_vecTableFlowPoints = vecTableFlowPoints;
    m_nTimeDigit = nTimeDigit;
    m_nFlowDigit = nFlowDigit;
    updateUnitHeader();
    updateViews();
}

void nmWellPressureFlowPage::clearData()
{
    m_pWell = nullptr;
    m_sPreviewPressureGaugeCode.clear();
    m_sPreviewFlowGaugeCode.clear();
    resetDataViews();
}

void nmWellPressureFlowPage::slotUnitChanged(
        int nColumn,
        const iUnitItem* pSourceUnit,
        const iUnitItem* pDestinationUnit)
{
    Q_UNUSED(pSourceUnit);
    if (pDestinationUnit == nullptr ||
            (nColumn != 0 && nColumn != 1))
    {
        updateUnitHeader();
        return;
    }

    QString sTimeUnit = m_sTimeUnit;
    QString sFlowUnit = m_sFlowUnit;
    if (nColumn == 0)
    {
        if (m_pTimeUnitGroup == nullptr)
        {
            updateUnitHeader();
            return;
        }
        sTimeUnit = pDestinationUnit->m_sName;
    }
    else
    {
        if (m_pFlowUnitGroup == nullptr)
        {
            updateUnitHeader();
            return;
        }
        sFlowUnit = pDestinationUnit->m_sName;
    }

    // 每次都从基准副本换算，禁止使用当前显示值继续换算。
    QVector<QPointF> vecTableFlowPoints;
    int nTimeDigit = m_nTimeDigit;
    int nFlowDigit = m_nFlowDigit;
    if (!buildFlowTableData(sTimeUnit,
                            sFlowUnit,
                            vecTableFlowPoints,
                            nTimeDigit,
                            nFlowDigit))
    {
        updateUnitHeader();
        return;
    }

    m_sTimeUnit = sTimeUnit;
    m_sFlowUnit = sFlowUnit;
    m_vecTableFlowPoints = vecTableFlowPoints;
    m_nTimeDigit = nTimeDigit;
    m_nFlowDigit = nFlowDigit;
    updateUnitHeader();
    updateFlowTable();
}

void nmWellPressureFlowPage::slotFlowRowChanged(
        int nCurrentRow,
        int nCurrentColumn,
        int nPreviousRow,
        int nPreviousColumn)
{
    Q_UNUSED(nCurrentColumn);
    Q_UNUSED(nPreviousRow);
    Q_UNUSED(nPreviousColumn);

    applyFlowSegmentSelection(nCurrentRow);
}

void nmWellPressureFlowPage::slotFlowChartPointClicked(double dTimePoint)
{
    // 曲线保持基准单位，点击时间先换算为表格当前单位再定位行。
    double dTableTimePoint = 0.0;
    if (!convertValue(m_pTimeUnitGroup,
                      m_sTimeBaseUnit,
                      m_sTimeUnit,
                      dTimePoint,
                      dTableTimePoint))
    {
        applyFlowSegmentSelection(-1);
        return;
    }

    applyFlowSegmentSelection(
            findFlowSegmentByTableTime(dTableTimePoint));
}

void nmWellPressureFlowPage::slotPressureGaugePreviewChanged(int nIndex)
{
    if (m_pWell == nullptr || nIndex < 0)
    {
        return;
    }

    const QString sGaugeCode =
            m_pPressureGaugeCombo->itemData(nIndex).toString();
    if (sGaugeCode.isEmpty() ||
            sGaugeCode == m_sPreviewPressureGaugeCode)
    {
        updatePreviewComboToolTip(m_pPressureGaugeCombo);
        return;
    }

    m_sPreviewPressureGaugeCode = sGaugeCode;
    refreshData();
}

void nmWellPressureFlowPage::slotFlowGaugePreviewChanged(int nIndex)
{
    if (m_pWell == nullptr || nIndex < 0)
    {
        return;
    }

    const QString sGaugeCode =
            m_pFlowGaugeCombo->itemData(nIndex).toString();
    if (sGaugeCode.isEmpty() || sGaugeCode == m_sPreviewFlowGaugeCode)
    {
        updatePreviewComboToolTip(m_pFlowGaugeCombo);
        return;
    }

    m_sPreviewFlowGaugeCode = sGaugeCode;
    m_eDisplayPhase = defaultDisplayPhase(currentFlowRecord());
    m_nSelectedFlowSegment = -1;
    refreshData();
}

void nmWellPressureFlowPage::slotDisplayPhaseChanged(int nIndex)
{
    if (m_pWell == nullptr || nIndex < 0)
    {
        return;
    }

    NM_PHASE_TYPE eNewPhase = static_cast<NM_PHASE_TYPE>(
            m_pDisplayPhaseCombo->itemData(nIndex).toInt());
    if (eNewPhase == m_eDisplayPhase)
    {
        return;
    }

    // 仅重新按新相取点刷新视图，不改变记录内容、井别、m_nIndexF 或求解器输入。
    m_eDisplayPhase = eNewPhase;
    refreshData();
}

void nmWellPressureFlowPage::createUi()
{
    QVBoxLayout* pMainLayout = new QVBoxLayout(this);
    pMainLayout->setContentsMargins(8, 6, 8, 8);
    pMainLayout->setSpacing(0);

    m_pContentStack = new QStackedWidget(this);
    m_pHorizontalSplitter = new QSplitter(
            Qt::Horizontal, m_pContentStack);
    m_pHorizontalSplitter->setChildrenCollapsible(false);

    // 左侧上下两图共享时间范围，但各自保留独立空状态。
    m_pChartSplitter = new QSplitter(
            Qt::Vertical, m_pHorizontalSplitter);
    m_pChartSplitter->setChildrenCollapsible(false);

    m_pPressureChartStack = new QStackedWidget(m_pChartSplitter);
    m_pPressureChart = new nmWxPressFlowChartWidget(
            m_pPressureChartStack);
    m_pPressureChart->setReadOnly(true);
    m_pPressureChart->setTimeSelectionEnabled(false);
    m_pPressureChart->setAxisLabels(tr("Time"), tr("Pressure"));
    m_pPressureChart->setAxisUnits(
            m_sTimeBaseUnit, tr("MPa"));
    m_pPressureChart->setLineColor(QColor(50, 200, 50));
    m_pPressureChart->setChartType(CHART_TYPE_LINE);
    m_pPressureChartStack->addWidget(m_pPressureChart);
    m_pPressureChartStack->addWidget(createEmptyLabel(
            tr("No pressure data"), m_pPressureChartStack));

    m_pFlowChartStack = new QStackedWidget(m_pChartSplitter);
    m_pFlowChart = new nmWxPressFlowChartWidget(m_pFlowChartStack);
    m_pFlowChart->setReadOnly(true);
    m_pFlowChart->setTimeSelectionEnabled(true);
    m_pFlowChart->setAxisLabels(tr("Time"), tr("Flow"));
    m_pFlowChart->setAxisUnits(m_sTimeBaseUnit, m_sFlowBaseUnit);
    m_pFlowChart->setLineColor(QColor(255, 0, 0));
    m_pFlowChart->setChartType(CHART_TYPE_STEP);
    m_pFlowChartStack->addWidget(m_pFlowChart);
    m_pFlowChartStack->addWidget(createEmptyLabel(
            tr("No flow data"), m_pFlowChartStack));

    m_pChartSplitter->addWidget(m_pPressureChartStack);
    m_pChartSplitter->addWidget(m_pFlowChartStack);
    m_pChartSplitter->setStretchFactor(0, 1);
    m_pChartSplitter->setStretchFactor(1, 1);

    // 右侧仅显示原始流量段对应的时间和流量，不提供任何编辑入口。
    m_pFlowTableStack = new QStackedWidget(m_pHorizontalSplitter);
    m_pFlowTable = new QTableWidget(m_pFlowTableStack);
    m_pFlowTable->setColumnCount(2);
    m_pFlowTable->setEditTriggers(QAbstractItemView::NoEditTriggers);
    m_pFlowTable->setSelectionBehavior(QAbstractItemView::SelectRows);
    m_pFlowTable->setSelectionMode(QAbstractItemView::SingleSelection);
    m_pFlowTable->setSortingEnabled(false);
    m_pFlowTable->setDragEnabled(false);
    m_pFlowTable->setAcceptDrops(false);
    m_pFlowTable->setDropIndicatorShown(false);
    m_pFlowTable->setAlternatingRowColors(true);
    m_pFlowTable->setStyleSheet(
            "QTableWidget {"
            "    background-color: palette(base);"
            "    alternate-background-color: rgb(232, 232, 232);"
            "    gridline-color: palette(midlight);"
            "    border: 1px solid palette(mid);"
            "}"
            "QHeaderView {"
            "    background-color: palette(button);"
            "    color: palette(button-text);"
            "}"
            "QHeaderView::section {"
            "    background-color: palette(button);"
            "    color: palette(button-text);"
            "    border: none;"
            "    border-right: 1px solid palette(mid);"
            "    border-bottom: 1px solid palette(mid);"
            "}"
            "QTableCornerButton::section {"
            "    background-color: palette(base);"
            "    border: none;"
            "    border-right: 1px solid palette(mid);"
            "    border-bottom: 1px solid palette(mid);"
            "}");

    m_pFlowHeader = new ZxTableHeaderViewUnit(m_pFlowTable);
    m_pFlowTable->setHorizontalHeader(m_pFlowHeader);
    m_pFlowTable->horizontalHeader()->setMovable(false);
    m_pFlowTable->horizontalHeader()->setResizeMode(QHeaderView::Stretch);
    m_pFlowTable->verticalHeader()->setMovable(false);
    m_pFlowTable->verticalHeader()->setDefaultAlignment(Qt::AlignCenter);
    m_pFlowTable->verticalHeader()->setMinimumWidth(18);

    m_pFlowTableStack->addWidget(m_pFlowTable);
    m_pFlowTableStack->addWidget(createEmptyLabel(
            tr("No flow data"), m_pFlowTableStack));

    m_pHorizontalSplitter->addWidget(m_pChartSplitter);
    m_pHorizontalSplitter->addWidget(m_pFlowTableStack);
    m_pHorizontalSplitter->setStretchFactor(0, 7);
    m_pHorizontalSplitter->setStretchFactor(1, 3);
    QList<int> listHorizontalSizes;
    listHorizontalSizes << 700 << 300;
    m_pHorizontalSplitter->setSizes(listHorizontalSizes);

    m_pContentStack->addWidget(m_pHorizontalSplitter);
    m_pContentStack->addWidget(createEmptyLabel(
            tr("No pressure or flow data"), m_pContentStack));

    // 顶部插入压力/流量记录与显示相三个下拉框所在行，不改变下方图表/表格结构。
    createRecordSelectionBar();
    pMainLayout->addWidget(m_pRecordSelectionBar);
    pMainLayout->addWidget(m_pContentStack, 1);

    connect(m_pFlowHeader,
            SIGNAL(sigCbxValueChanged(int,const iUnitItem*,const iUnitItem*)),
            this,
            SLOT(slotUnitChanged(int,const iUnitItem*,const iUnitItem*)));
    connect(m_pFlowTable,
            SIGNAL(currentCellChanged(int,int,int,int)),
            this,
            SLOT(slotFlowRowChanged(int,int,int,int)));
    connect(m_pFlowChart,
            SIGNAL(chartPointClicked(double)),
            this,
            SLOT(slotFlowChartPointClicked(double)));
}

void nmWellPressureFlowPage::createRecordSelectionBar()
{
    m_pRecordSelectionBar = new QWidget(this);
    QHBoxLayout* pBarLayout = new QHBoxLayout(m_pRecordSelectionBar);
    pBarLayout->setContentsMargins(0, 0, 0, 6);
    pBarLayout->setSpacing(6);

    QLabel* pPressureLabel = new QLabel(
            tr("Pressure Record"), m_pRecordSelectionBar);
    m_pPressureGaugeCombo = new QComboBox(m_pRecordSelectionBar);
    m_pPressureGaugeCombo->setEnabled(false);
    m_pPressureGaugeCombo->setMinimumWidth(160);
    m_pPressureGaugeCombo->setMaxVisibleItems(16);

    QLabel* pFlowLabel = new QLabel(
            tr("Flow Record"), m_pRecordSelectionBar);
    m_pFlowGaugeCombo = new QComboBox(m_pRecordSelectionBar);
    m_pFlowGaugeCombo->setEnabled(false);
    m_pFlowGaugeCombo->setMinimumWidth(160);
    m_pFlowGaugeCombo->setMaxVisibleItems(16);

    // 显示相是纯展示状态，整体容器随记录是否为多相含数据而隐藏/显示。
    m_pDisplayPhaseContainer = new QWidget(m_pRecordSelectionBar);
    QHBoxLayout* pPhaseLayout = new QHBoxLayout(m_pDisplayPhaseContainer);
    pPhaseLayout->setContentsMargins(0, 0, 0, 0);
    pPhaseLayout->setSpacing(6);
    QLabel* pPhaseLabel = new QLabel(
            tr("Display Phase"), m_pDisplayPhaseContainer);
    m_pDisplayPhaseCombo = new QComboBox(m_pDisplayPhaseContainer);
    m_pDisplayPhaseCombo->setMinimumWidth(80);
    pPhaseLayout->addWidget(pPhaseLabel);
    pPhaseLayout->addWidget(m_pDisplayPhaseCombo);
    m_pDisplayPhaseContainer->setVisible(false);

    pBarLayout->addWidget(pPressureLabel);
    pBarLayout->addWidget(m_pPressureGaugeCombo);
    pBarLayout->addSpacing(12);
    pBarLayout->addWidget(pFlowLabel);
    pBarLayout->addWidget(m_pFlowGaugeCombo);
    pBarLayout->addSpacing(12);
    pBarLayout->addWidget(m_pDisplayPhaseContainer);
    pBarLayout->addStretch(1);

    connect(m_pPressureGaugeCombo,
            SIGNAL(currentIndexChanged(int)),
            this,
            SLOT(slotPressureGaugePreviewChanged(int)));
    connect(m_pFlowGaugeCombo,
            SIGNAL(currentIndexChanged(int)),
            this,
            SLOT(slotFlowGaugePreviewChanged(int)));
    connect(m_pDisplayPhaseCombo,
            SIGNAL(currentIndexChanged(int)),
            this,
            SLOT(slotDisplayPhaseChanged(int)));
}

void nmWellPressureFlowPage::populatePressureGaugeCombo()
{
    if (m_pPressureGaugeCombo == nullptr)
    {
        return;
    }

    bool bSignalsWereBlocked = m_pPressureGaugeCombo->blockSignals(true);
    m_pPressureGaugeCombo->clear();

    if (m_pWell == nullptr)
    {
        m_pPressureGaugeCombo->setEnabled(false);
        m_pPressureGaugeCombo->blockSignals(bSignalsWereBlocked);
        return;
    }

    m_vecPressureGaugeRecords = m_pWell->getPressureRecords();

    int nPreviewIndex = -1;
    int nCalculationIndex = -1;
    int nFirstUsableIndex = -1;
    const QString sCalculationCode =
            m_pWell->getSelectedPressureGaugeCode();
    for (int nIndex = 0; nIndex < m_vecPressureGaugeRecords.size(); ++nIndex)
    {
        const nmPressureGaugeRecord& oRecord =
                m_vecPressureGaugeRecords[nIndex];
        appendGaugeComboItem(m_pPressureGaugeCombo,
                oRecord.sGaugeName, oRecord.sGaugeCode,
                oRecord.sGaugeTime, oRecord.eStatus);
        const int nItemIndex = m_pPressureGaugeCombo->count() - 1;
        if (oRecord.eStatus != NM_GaugeRecord_Usable)
        {
            continue;
        }
        if (nFirstUsableIndex < 0)
        {
            nFirstUsableIndex = nItemIndex;
        }
        if (oRecord.sGaugeCode == m_sPreviewPressureGaugeCode)
        {
            nPreviewIndex = nItemIndex;
        }
        if (oRecord.sGaugeCode == sCalculationCode)
        {
            nCalculationIndex = nItemIndex;
        }
    }
    const int nCurrentIndex = nPreviewIndex >= 0
            ? nPreviewIndex : (nCalculationIndex >= 0
            ? nCalculationIndex : (nFirstUsableIndex >= 0
            ? nFirstUsableIndex : -1));
    m_pPressureGaugeCombo->setCurrentIndex(nCurrentIndex);
    m_pPressureGaugeCombo->setEnabled(nFirstUsableIndex >= 0);
    m_sPreviewPressureGaugeCode = nCurrentIndex >= 0
            ? m_pPressureGaugeCombo->itemData(nCurrentIndex).toString()
            : QString();
    updatePreviewComboToolTip(m_pPressureGaugeCombo);
    m_pPressureGaugeCombo->blockSignals(bSignalsWereBlocked);
}

void nmWellPressureFlowPage::populateFlowGaugeCombo()
{
    if (m_pFlowGaugeCombo == nullptr)
    {
        return;
    }

    bool bSignalsWereBlocked = m_pFlowGaugeCombo->blockSignals(true);
    m_pFlowGaugeCombo->clear();

    if (m_pWell == nullptr)
    {
        m_vecFlowGaugeRecords.clear();
        m_pFlowGaugeCombo->setEnabled(false);
        m_pFlowGaugeCombo->blockSignals(bSignalsWereBlocked);
        return;
    }

    // 缓存整份记录列表供 currentFlowRecord() 安全返回内部指针，记录内容切换记录时不变。
    m_vecFlowGaugeRecords = m_pWell->getFlowRecords();

    int nPreviewIndex = -1;
    int nCalculationIndex = -1;
    int nFirstUsableIndex = -1;
    const QString sCalculationCode = m_pWell->getSelectedFlowGaugeCode();
    for (int nIndex = 0; nIndex < m_vecFlowGaugeRecords.size(); ++nIndex)
    {
        const nmFlowGaugeRecord& oRecord = m_vecFlowGaugeRecords[nIndex];
        appendGaugeComboItem(m_pFlowGaugeCombo,
                oRecord.sGaugeName, oRecord.sGaugeCode,
                oRecord.sGaugeTime, oRecord.eStatus);
        const int nItemIndex = m_pFlowGaugeCombo->count() - 1;
        if (oRecord.eStatus != NM_GaugeRecord_Usable)
        {
            continue;
        }
        if (nFirstUsableIndex < 0)
        {
            nFirstUsableIndex = nItemIndex;
        }
        if (oRecord.sGaugeCode == m_sPreviewFlowGaugeCode)
        {
            nPreviewIndex = nItemIndex;
        }
        if (oRecord.sGaugeCode == sCalculationCode)
        {
            nCalculationIndex = nItemIndex;
        }
    }
    const int nCurrentIndex = nPreviewIndex >= 0
            ? nPreviewIndex : (nCalculationIndex >= 0
            ? nCalculationIndex : (nFirstUsableIndex >= 0
            ? nFirstUsableIndex : -1));
    m_pFlowGaugeCombo->setCurrentIndex(nCurrentIndex);
    m_pFlowGaugeCombo->setEnabled(nFirstUsableIndex >= 0);
    m_sPreviewFlowGaugeCode = nCurrentIndex >= 0
            ? m_pFlowGaugeCombo->itemData(nCurrentIndex).toString()
            : QString();
    updatePreviewComboToolTip(m_pFlowGaugeCombo);
    m_pFlowGaugeCombo->blockSignals(bSignalsWereBlocked);
}

void nmWellPressureFlowPage::populateDisplayPhaseCombo(
        const nmFlowGaugeRecord* pRecord)
{
    if (m_pDisplayPhaseCombo == nullptr ||
            m_pDisplayPhaseContainer == nullptr)
    {
        return;
    }

    bool bSignalsWereBlocked = m_pDisplayPhaseCombo->blockSignals(true);
    m_pDisplayPhaseCombo->clear();

    if (pRecord == nullptr)
    {
        m_pDisplayPhaseContainer->setVisible(false);
        m_eDisplayPhase = PHASE_UNKNOWN;
        m_pDisplayPhaseCombo->blockSignals(bSignalsWereBlocked);
        return;
    }

    // 仅列出记录中真实含数据的相；若记录只有 1 个相有数据，整行隐藏但仍取该相的点。
    QVector<NM_PHASE_TYPE> vecAvailablePhases;
    QStringList listAvailableLabels;
    if (hasRealPhaseData(pRecord->vecOilPoints))
    {
        vecAvailablePhases.append(PHASE_Oil);
        listAvailableLabels.append(tr("Oil"));
    }
    if (hasRealPhaseData(pRecord->vecGasPoints))
    {
        vecAvailablePhases.append(PHASE_Gas);
        listAvailableLabels.append(tr("Gas"));
    }
    if (hasRealPhaseData(pRecord->vecWaterPoints))
    {
        vecAvailablePhases.append(PHASE_Water);
        listAvailableLabels.append(tr("Water"));
    }

    if (vecAvailablePhases.size() <= 1)
    {
        m_pDisplayPhaseContainer->setVisible(false);
        m_eDisplayPhase = vecAvailablePhases.isEmpty()
                ? PHASE_UNKNOWN : vecAvailablePhases.first();
        m_pDisplayPhaseCombo->blockSignals(bSignalsWereBlocked);
        return;
    }

    m_pDisplayPhaseContainer->setVisible(true);
    int nCurrentIndex = -1;
    for (int nIndex = 0; nIndex < vecAvailablePhases.size(); ++nIndex)
    {
        m_pDisplayPhaseCombo->addItem(listAvailableLabels[nIndex],
                static_cast<int>(vecAvailablePhases[nIndex]));
        if (vecAvailablePhases[nIndex] == m_eDisplayPhase)
        {
            nCurrentIndex = nIndex;
        }
    }
    if (nCurrentIndex < 0)
    {
        NM_PHASE_TYPE eDefaultPhase = defaultDisplayPhase(pRecord);
        for (int nIndex = 0; nIndex < vecAvailablePhases.size(); ++nIndex)
        {
            if (vecAvailablePhases[nIndex] == eDefaultPhase)
            {
                nCurrentIndex = nIndex;
                break;
            }
        }
    }
    if (nCurrentIndex < 0)
    {
        nCurrentIndex = 0;
    }
    m_pDisplayPhaseCombo->setCurrentIndex(nCurrentIndex);
    m_eDisplayPhase = static_cast<NM_PHASE_TYPE>(
            m_pDisplayPhaseCombo->itemData(nCurrentIndex).toInt());
    m_pDisplayPhaseCombo->blockSignals(bSignalsWereBlocked);
}

NM_PHASE_TYPE nmWellPressureFlowPage::defaultDisplayPhase(
        const nmFlowGaugeRecord* pRecord) const
{
    if (pRecord == nullptr)
    {
        return PHASE_UNKNOWN;
    }

    // 优先使用井别对应的参考相，前提是该相在本条记录中确有真实数据。
    NM_PHASE_TYPE eReferencePhase = (m_pWell != nullptr)
            ? m_pWell->getReferenceFlowPhase() : PHASE_UNKNOWN;
    if (eReferencePhase == PHASE_Oil && hasRealPhaseData(pRecord->vecOilPoints))
    {
        return PHASE_Oil;
    }
    if (eReferencePhase == PHASE_Gas && hasRealPhaseData(pRecord->vecGasPoints))
    {
        return PHASE_Gas;
    }
    if (eReferencePhase == PHASE_Water && hasRealPhaseData(pRecord->vecWaterPoints))
    {
        return PHASE_Water;
    }

    // 参考相无数据时，退回记录中第一个有真实数据的相，固定按油、气、水顺序。
    if (hasRealPhaseData(pRecord->vecOilPoints))
    {
        return PHASE_Oil;
    }
    if (hasRealPhaseData(pRecord->vecGasPoints))
    {
        return PHASE_Gas;
    }
    if (hasRealPhaseData(pRecord->vecWaterPoints))
    {
        return PHASE_Water;
    }
    return PHASE_UNKNOWN;
}

const nmPressureGaugeRecord* nmWellPressureFlowPage::currentPressureRecord() const
{
    for (int nIndex = 0; nIndex < m_vecPressureGaugeRecords.size(); ++nIndex)
    {
        if (m_vecPressureGaugeRecords[nIndex].sGaugeCode ==
                m_sPreviewPressureGaugeCode)
        {
            return &m_vecPressureGaugeRecords[nIndex];
        }
    }
    return nullptr;
}

const nmFlowGaugeRecord* nmWellPressureFlowPage::currentFlowRecord() const
{
    for (int nIndex = 0; nIndex < m_vecFlowGaugeRecords.size(); ++nIndex)
    {
        if (m_vecFlowGaugeRecords[nIndex].sGaugeCode ==
                m_sPreviewFlowGaugeCode)
        {
            return &m_vecFlowGaugeRecords[nIndex];
        }
    }
    return nullptr;
}

void nmWellPressureFlowPage::initializeUnitSupport()
{
    QStringList listTimeCandidates;
    listTimeCandidates << preferredTimeUnit() << QLatin1String("hr");
    QStringList listFlowCandidates;
    listFlowCandidates << preferredFlowUnit()
                       << QLatin1String("m^3/d")
                       << QLatin1String("m^3/D");

    // 优先使用当前单位包的h、m³/d；旧英文单位包自动兼容hr、m^3/d。
    m_pTimeUnitGroup = resolveUnitGroup(
            listTimeCandidates, m_sTimeBaseUnit);
    m_pFlowUnitGroup = resolveUnitGroup(
            listFlowCandidates, m_sFlowBaseUnit);

    // 单位组缺失或当前单位不再存在时回退基准单位，入口由框架表头禁用。
    if (m_pTimeUnitGroup == nullptr ||
            m_pTimeUnitGroup->indexOf(m_sTimeUnit) < 0)
    {
        m_sTimeUnit = m_sTimeBaseUnit;
    }
    if (m_pFlowUnitGroup == nullptr ||
            m_pFlowUnitGroup->indexOf(m_sFlowUnit) < 0)
    {
        m_sFlowUnit = m_sFlowBaseUnit;
    }
    updateUnitHeader();
}

void nmWellPressureFlowPage::updateUnitHeader()
{
    if (m_pFlowHeader == nullptr)
    {
        return;
    }

    QString sFlowTitle = tr("Flow");
    switch (m_eDisplayPhase)
    {
    case PHASE_Oil:
        sFlowTitle = tr("Oil phase flow");
        break;
    case PHASE_Gas:
        sFlowTitle = tr("Gas phase flow");
        break;
    case PHASE_Water:
        sFlowTitle = tr("Water phase flow");
        break;
    default:
        break;
    }

    QStringList listTitles;
    listTitles << tr("Time") << sFlowTitle;
    QStringList listUnits;
    listUnits << m_sTimeUnit << m_sFlowUnit;
    m_pFlowHeader->setHeaderData(listTitles, listUnits);
}

bool nmWellPressureFlowPage::buildFlowTableData(
        const QString& sTimeUnit,
        const QString& sFlowUnit,
        QVector<QPointF>& vecFlowPoints,
        int& nTimeDigit,
        int& nFlowDigit) const
{
    vecFlowPoints = m_vecRawFlowPoints;

    // 空数据也必须验证目标单位，避免表头切换后留下不可用单位状态。
    double dConvertedZero = 0.0;
    if (!convertValue(m_pTimeUnitGroup,
                      m_sTimeBaseUnit,
                      sTimeUnit,
                      0.0,
                      dConvertedZero,
                      &nTimeDigit) ||
            !convertValue(m_pFlowUnitGroup,
                          m_sFlowBaseUnit,
                          sFlowUnit,
                          0.0,
                          dConvertedZero,
                          &nFlowDigit))
    {
        return false;
    }

    // 表格每次从原始副本换算，禁止使用当前显示值继续换算。
    for (int nIndex = 0; nIndex < vecFlowPoints.size(); ++nIndex)
    {
        double dDuration = 0.0;
        double dFlow = 0.0;
        if (!convertValue(m_pTimeUnitGroup,
                          m_sTimeBaseUnit,
                          sTimeUnit,
                          m_vecRawFlowPoints[nIndex].x(),
                          dDuration) ||
                !convertValue(m_pFlowUnitGroup,
                              m_sFlowBaseUnit,
                              sFlowUnit,
                              m_vecRawFlowPoints[nIndex].y(),
                              dFlow))
        {
            return false;
        }
        vecFlowPoints[nIndex] = QPointF(dDuration, dFlow);
    }
    return true;
}

bool nmWellPressureFlowPage::convertValue(
        iUnitGroup* pUnitGroup,
        const QString& sBaseUnit,
        const QString& sDestinationUnit,
        double dSourceValue,
        double& dDestinationValue,
        int* pDestinationDigit) const
{
    int nDigit = 6;
    if (pUnitGroup != nullptr)
    {
        iUnitItem* pUnitItem =
                pUnitGroup->getUnitItem(sDestinationUnit);
        if (pUnitItem != nullptr && pUnitItem->m_nDigit >= 0)
        {
            nDigit = pUnitItem->m_nDigit;
        }
    }

    if (sDestinationUnit == sBaseUnit)
    {
        dDestinationValue = dSourceValue;
        if (pDestinationDigit != nullptr)
        {
            *pDestinationDigit = nDigit;
        }
        return true;
    }
    if (pUnitGroup == nullptr ||
            pUnitGroup->indexOf(sBaseUnit) < 0 ||
            pUnitGroup->indexOf(sDestinationUnit) < 0)
    {
        return false;
    }

    int nFallbackDigit = nDigit;
    bool bConverted = pUnitGroup->convert(sBaseUnit,
                                          dSourceValue,
                                          sDestinationUnit,
                                          dDestinationValue,
                                          nDigit);
    if (bConverted && pDestinationDigit != nullptr)
    {
        *pDestinationDigit = nDigit >= 0
                ? nDigit : nFallbackDigit;
    }
    return bConverted;
}

void nmWellPressureFlowPage::updateViews()
{
    QVector<QPointF> vecFlowChartPoints = createFlowChartPoints();
    m_pPressureChart->setAxisUnits(
            m_sTimeBaseUnit, tr("MPa"));
    m_pFlowChart->setAxisUnits(m_sTimeBaseUnit, m_sFlowBaseUnit);
    m_pPressureChart->setData(m_vecRawPressurePoints);
    m_pFlowChart->setData(vecFlowChartPoints);
    updateXAxisRange(vecFlowChartPoints);
    updateFlowTable();

    bool bPressureEmpty = m_vecRawPressurePoints.isEmpty();
    bool bFlowEmpty = m_vecRawFlowPoints.isEmpty();
    m_pPressureChartStack->setCurrentIndex(bPressureEmpty ? 1 : 0);
    m_pFlowChartStack->setCurrentIndex(bFlowEmpty ? 1 : 0);
    m_pFlowTableStack->setCurrentIndex(bFlowEmpty ? 1 : 0);
    m_pContentStack->setCurrentIndex(
            bPressureEmpty && bFlowEmpty ? 1 : 0);
    updateSelectedFlowSegment();
}

QVector<QPointF> nmWellPressureFlowPage::createFlowChartPoints() const
{
    QVector<QPointF> vecChartPoints;
    double dTotalTime = 0.0;
    for (int nIndex = 0;
         nIndex < m_vecRawFlowPoints.size();
         ++nIndex)
    {
        const QPointF& oSegment = m_vecRawFlowPoints[nIndex];
        if (nIndex == 0)
        {
            vecChartPoints.append(QPointF(0.0, oSegment.y()));
        }

        dTotalTime += oSegment.x();
        vecChartPoints.append(QPointF(dTotalTime, oSegment.y()));
        if (nIndex < m_vecRawFlowPoints.size() - 1 &&
                qAbs(m_vecRawFlowPoints[nIndex + 1].y() -
                     oSegment.y()) > 1e-6)
        {
            vecChartPoints.append(QPointF(
                    dTotalTime,
                    m_vecRawFlowPoints[nIndex + 1].y()));
        }
    }
    return vecChartPoints;
}

void nmWellPressureFlowPage::updateFlowTable()
{
    bool bSignalsWereBlocked = m_pFlowTable->blockSignals(true);
    m_pFlowTable->clearContents();
    m_pFlowTable->setRowCount(m_vecTableFlowPoints.size());

    // 纵向表头显示Qt默认的1～N序号，内部仍使用零基流量点索引。
    for (int nIndex = 0;
         nIndex < m_vecTableFlowPoints.size();
         ++nIndex)
    {
        QTableWidgetItem* pTimeItem = new QTableWidgetItem(
                displayValueText(m_vecTableFlowPoints[nIndex].x(),
                                 m_nTimeDigit));
        pTimeItem->setTextAlignment(Qt::AlignCenter);
        m_pFlowTable->setItem(nIndex, 0, pTimeItem);

        QTableWidgetItem* pFlowItem = new QTableWidgetItem(
                displayValueText(m_vecTableFlowPoints[nIndex].y(),
                                 m_nFlowDigit));
        pFlowItem->setTextAlignment(Qt::AlignCenter);
        m_pFlowTable->setItem(nIndex, 1, pFlowItem);
    }

    if (m_nSelectedFlowSegment >= 0 &&
            m_nSelectedFlowSegment < m_pFlowTable->rowCount())
    {
        m_pFlowTable->setCurrentCell(m_nSelectedFlowSegment, 0);
        m_pFlowTable->selectRow(m_nSelectedFlowSegment);
    }
    else
    {
        m_nSelectedFlowSegment = -1;
        m_pFlowTable->setCurrentCell(-1, -1);
        m_pFlowTable->clearSelection();
    }
    m_pFlowTable->blockSignals(bSignalsWereBlocked);
}

void nmWellPressureFlowPage::updateXAxisRange(
        const QVector<QPointF>& vecFlowChartPoints)
{
    bool bHasRange = false;
    double dMinimum = 0.0;
    double dMaximum = 0.0;

    for (int nIndex = 0;
         nIndex < m_vecRawPressurePoints.size();
         ++nIndex)
    {
        double dTime = m_vecRawPressurePoints[nIndex].x();
        dMinimum = bHasRange ? qMin(dMinimum, dTime) : dTime;
        dMaximum = bHasRange ? qMax(dMaximum, dTime) : dTime;
        bHasRange = true;
    }
    for (int nIndex = 0; nIndex < vecFlowChartPoints.size(); ++nIndex)
    {
        double dTime = vecFlowChartPoints[nIndex].x();
        dMinimum = bHasRange ? qMin(dMinimum, dTime) : dTime;
        dMaximum = bHasRange ? qMax(dMaximum, dTime) : dTime;
        bHasRange = true;
    }

    if (bHasRange)
    {
        m_pPressureChart->setXAxisRange(dMinimum, dMaximum);
        m_pFlowChart->setXAxisRange(dMinimum, dMaximum);
    }
    else
    {
        m_pPressureChart->clearXAxisRange();
        m_pFlowChart->clearXAxisRange();
    }
}

void nmWellPressureFlowPage::updateSelectedFlowSegment()
{
    if (m_nSelectedFlowSegment < 0 ||
            m_nSelectedFlowSegment >= m_vecRawFlowPoints.size())
    {
        m_pPressureChart->clearHighlightedTimeRange();
        m_pFlowChart->clearHighlightedTimeRange();
        return;
    }

    // 流量点X值是持续时间，段区间必须从第0段开始逐段累加。
    double dStartTime = 0.0;
    for (int nIndex = 0;
         nIndex < m_nSelectedFlowSegment;
         ++nIndex)
    {
        dStartTime += m_vecRawFlowPoints[nIndex].x();
    }
    double dEndTime = dStartTime +
            m_vecRawFlowPoints[m_nSelectedFlowSegment].x();

    m_pPressureChart->setHighlightedTimeRange(
            dStartTime, dEndTime);
    m_pFlowChart->setHighlightedTimeRange(dStartTime, dEndTime);
}

void nmWellPressureFlowPage::applyFlowSegmentSelection(int nSegmentIndex)
{
    if (nSegmentIndex < 0 ||
            nSegmentIndex >= m_vecRawFlowPoints.size() ||
            nSegmentIndex >= m_pFlowTable->rowCount())
    {
        nSegmentIndex = -1;
    }

    m_nSelectedFlowSegment = nSegmentIndex;
    bool bSignalsWereBlocked = m_pFlowTable->blockSignals(true);
    if (m_nSelectedFlowSegment >= 0)
    {
        m_pFlowTable->setCurrentCell(m_nSelectedFlowSegment, 0);
        m_pFlowTable->selectRow(m_nSelectedFlowSegment);
        QTableWidgetItem* pItem = m_pFlowTable->item(
                m_nSelectedFlowSegment, 0);
        if (pItem != nullptr)
        {
            m_pFlowTable->scrollToItem(
                    pItem, QAbstractItemView::EnsureVisible);
        }
    }
    else
    {
        m_pFlowTable->setCurrentCell(-1, -1);
        m_pFlowTable->clearSelection();
    }
    m_pFlowTable->blockSignals(bSignalsWereBlocked);
    updateSelectedFlowSegment();
}

int nmWellPressureFlowPage::findFlowSegmentByTableTime(
        double dTimePoint) const
{
    double dTotalTime = 0.0;
    for (int nIndex = 0;
         nIndex < m_vecTableFlowPoints.size();
         ++nIndex)
    {
        dTotalTime += qMax(0.0, m_vecTableFlowPoints[nIndex].x());
    }

    const double dTolerance = qMax(1.0, qAbs(dTotalTime)) * 1e-9;
    if (dTimePoint < 0.0 ||
            dTimePoint > dTotalTime + dTolerance)
    {
        return -1;
    }

    // 零时长点不占区间；分界点继续查找后一有效段。
    double dStartTime = 0.0;
    int nLastValidSegment = -1;
    for (int nIndex = 0;
         nIndex < m_vecTableFlowPoints.size();
         ++nIndex)
    {
        double dDuration = m_vecTableFlowPoints[nIndex].x();
        if (dDuration <= dTolerance)
        {
            continue;
        }

        nLastValidSegment = nIndex;
        double dEndTime = dStartTime + dDuration;
        if (dTimePoint < dEndTime - dTolerance)
        {
            return nIndex;
        }
        dStartTime = dEndTime;
    }

    // 最终结束点没有后一段，归入最后一个有效流量段。
    if (nLastValidSegment >= 0 &&
            qAbs(dTimePoint - dTotalTime) <= dTolerance)
    {
        return nLastValidSegment;
    }
    return -1;
}

void nmWellPressureFlowPage::resetDataViews()
{
    m_vecRawPressurePoints.clear();
    m_vecRawFlowPoints.clear();
    m_vecTableFlowPoints.clear();
    m_nSelectedFlowSegment = -1;
    if (m_pWell == nullptr)
    {
        m_sPreviewPressureGaugeCode.clear();
        m_sPreviewFlowGaugeCode.clear();
    }

    // 井绑定切换或清空时先清空并禁用三个记录/相下拉框，等待 refreshData() 重新填充。
    if (m_pPressureGaugeCombo != nullptr)
    {
        bool bSignalsWereBlocked = m_pPressureGaugeCombo->blockSignals(true);
        m_pPressureGaugeCombo->clear();
        m_pPressureGaugeCombo->setEnabled(false);
        m_pPressureGaugeCombo->setToolTip(QString());
        m_pPressureGaugeCombo->blockSignals(bSignalsWereBlocked);
    }
    if (m_pFlowGaugeCombo != nullptr)
    {
        bool bSignalsWereBlocked = m_pFlowGaugeCombo->blockSignals(true);
        m_pFlowGaugeCombo->clear();
        m_pFlowGaugeCombo->setEnabled(false);
        m_pFlowGaugeCombo->setToolTip(QString());
        m_pFlowGaugeCombo->blockSignals(bSignalsWereBlocked);
    }
    m_vecPressureGaugeRecords.clear();
    m_vecFlowGaugeRecords.clear();
    if (m_pDisplayPhaseCombo != nullptr)
    {
        bool bSignalsWereBlocked = m_pDisplayPhaseCombo->blockSignals(true);
        m_pDisplayPhaseCombo->clear();
        m_pDisplayPhaseCombo->blockSignals(bSignalsWereBlocked);
    }
    if (m_pDisplayPhaseContainer != nullptr)
    {
        m_pDisplayPhaseContainer->setVisible(false);
    }
    m_eDisplayPhase = PHASE_UNKNOWN;

    updateViews();
}