95 lines
4.0 KiB
C++
95 lines
4.0 KiB
C++
#include "panels/DatasetDetailPage.hpp"
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#include <QButtonGroup>
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#include <QVBoxLayout>
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#include "Glyphs.hpp"
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#include "PanelHeader.hpp"
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#include "panels/LoadingOverlay.hpp"
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#include "panels/chart/DataTableView.hpp"
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#include "panels/chart/DetailViewFactory.hpp"
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#include "panels/chart/IDetailView.hpp"
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namespace geopro::app {
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DatasetDetailPage::DatasetDetailPage(QWidget* parent) : QWidget(parent) {
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auto* lay = new QVBoxLayout(this);
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lay->setContentsMargins(0, 0, 0, 0);
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lay->setSpacing(0);
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}
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void DatasetDetailPage::build(const QString& dsId, const QString& ddCode, const QString& dsName,
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const std::vector<geopro::controller::TabSpec>& tabs) {
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Q_ASSERT(views_.empty()); // build() 仅一次：views_ 为已 release 的裸指针，二次构建会泄漏旧视图
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if (!views_.empty()) return;
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dsId_ = dsId;
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ddCode_ = ddCode;
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dsName_ = dsName;
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tabs_ = tabs;
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views_.assign(tabs.size(), nullptr);
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loaded_.assign(tabs.size(), false);
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requested_.assign(tabs.size(), false);
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overlays_.clear();
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// 按 TabSpec 经工厂造视图，并组装为带表头页签的面板。
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QVector<PanelTab> panelTabs;
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for (size_t i = 0; i < tabs.size(); ++i) {
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const auto& spec = tabs[i];
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auto view = makeDetailView(spec.kind, this); // 抛出由调用栈兜底（GuardedApplication）
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IDetailView* raw = view.release(); // QWidget 由 this/QwtPlot 父子树接管生命周期
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views_[i] = raw;
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// lazy 页签：建覆盖该视图的加载遮罩（父为视图 widget，随其尺寸覆盖图区）。
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if (spec.lazy) overlays_[static_cast<int>(i)] = new LoadingOverlay(raw->widget());
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// 分页型页签：把表格视图的分页请求冒泡为页信号（携带 dsId/ddCode/tabIndex + 页参数）。
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if (spec.paginated) {
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if (auto* table = qobject_cast<DataTableView*>(raw->widget())) {
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const int idx = static_cast<int>(i);
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connect(table, &DataTableView::pageRequested, this,
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[this, idx](int pageNo, int pageSize) {
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emit tabPageNeeded(dsId_, ddCode_, idx, pageNo, pageSize);
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});
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}
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}
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panelTabs.append({Glyph::Detail, spec.title, raw->widget(), false});
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}
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const QVector<HeaderAction> actions = {
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{Glyph::Download, QStringLiteral("导出")},
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};
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auto tabbedPanel = buildTabbedPanel(panelTabs, actions);
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layout()->addWidget(tabbedPanel.container);
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// lazy 页签首次激活 → 发 tabNeeded 请求懒加载（数据慢，故不随开页同步拉）。
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if (tabbedPanel.tabGroup) {
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connect(tabbedPanel.tabGroup, &QButtonGroup::idClicked, this, [this](int idx) {
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if (idx < 0 || idx >= static_cast<int>(tabs_.size())) return;
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if (!tabs_[static_cast<size_t>(idx)].lazy) return;
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if (requested_[static_cast<size_t>(idx)] || loaded_[static_cast<size_t>(idx)]) return;
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if (dsId_.isEmpty()) return;
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requested_[static_cast<size_t>(idx)] = true;
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emit tabNeeded(dsId_, ddCode_, idx);
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});
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}
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}
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void DatasetDetailPage::setTabPayload(int tabIndex, const QVariant& payload) {
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if (tabIndex < 0 || tabIndex >= static_cast<int>(views_.size())) return;
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if (auto* v = views_[static_cast<size_t>(tabIndex)]) v->setPayload(payload);
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loaded_[static_cast<size_t>(tabIndex)] = true;
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requested_[static_cast<size_t>(tabIndex)] = true; // 已加载，切回不再重复请求
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setTabLoading(tabIndex, false); // 数据到达，隐藏遮罩
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}
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void DatasetDetailPage::setTabLoading(int tabIndex, bool on) {
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auto it = overlays_.find(tabIndex);
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if (it == overlays_.end()) return; // 非 lazy 页签无遮罩
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if (on) it.value()->showOver(); else it.value()->hide();
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}
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void DatasetDetailPage::clearAllLoadingOverlays() {
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for (auto* overlay : overlays_)
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if (overlay) overlay->hide();
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}
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} // namespace geopro::app
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