88 lines
4.3 KiB
C++
88 lines
4.3 KiB
C++
#include "DatasetDetailController.hpp"
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#include <exception>
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#include <QtGlobal>
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#include "repo/IAsyncDatasetRepository.hpp"
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#include "api/DatasetLoadHandles.hpp"
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namespace geopro::controller {
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DatasetDetailController::DatasetDetailController(data::IAsyncDatasetRepository& repo,
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ChartStrategyRegistry& registry, QObject* parent)
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: QObject(parent), repo_(repo), registry_(registry) {
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// QSignalSpy / 队列连接对自定义类型需注册（页签集随 datasetOpened 传递）。
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qRegisterMetaType<std::vector<controller::TabSpec>>("std::vector<controller::TabSpec>");
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}
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DatasetDetailController::~DatasetDetailController() {
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// 退出契约：abort 全部在飞句柄，不依赖外部析构顺序兜底。
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for (auto& load : inflight_)
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if (load) load->abort();
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}
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void DatasetDetailController::openDataset(const QString& dsId, const QString& ddCode,
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const QString& dsName, const QString& tmObjectId) {
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qInfo("[detail] openDataset id=%s ddCode=%s name=%s tm=%s", qUtf8Printable(dsId),
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qUtf8Printable(ddCode), qUtf8Printable(dsName), qUtf8Printable(tmObjectId));
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auto* s = registry_.find(ddCode.toStdString());
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if (!s) { // 未注册策略 → 优雅降级
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qWarning("[detail] 未注册策略 ddCode=%s → 降级提示", qUtf8Printable(ddCode));
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emit loadFailed(dsId, QStringLiteral("暂不支持该数据类型的预览"));
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return;
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}
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const std::vector<controller::TabSpec> tabs = s->tabs();
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emit datasetOpened(dsId, ddCode, dsName, tmObjectId, tabs);
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for (int i = 0; i < static_cast<int>(tabs.size()); ++i)
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if (!tabs[static_cast<size_t>(i)].lazy) loadTab(dsId, ddCode, i);
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}
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void DatasetDetailController::loadTab(const QString& dsId, const QString& ddCode, int tabIndex) {
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loadTabImpl(dsId, ddCode, tabIndex, /*pageNo*/ 1, /*pageSize*/ 0);
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}
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void DatasetDetailController::loadTabPaged(const QString& dsId, const QString& ddCode, int tabIndex,
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int pageNo, int pageSize) {
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loadTabImpl(dsId, ddCode, tabIndex, pageNo, pageSize);
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}
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void DatasetDetailController::loadTabImpl(const QString& dsId, const QString& ddCode, int tabIndex,
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int pageNo, int pageSize) {
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auto* s = registry_.find(ddCode.toStdString());
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if (!s) return; // 策略消失（不应发生）：静默不加载
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const std::vector<controller::TabSpec> tabs = s->tabs();
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if (tabIndex < 0 || tabIndex >= static_cast<int>(tabs.size())) return;
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const controller::TabSpec& spec = tabs[static_cast<size_t>(tabIndex)];
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// loadAsync 对未知 loaderKey 抛 std::runtime_error；若逃逸槽函数会被 GuardedApplication
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// 吞掉、遮罩永久悬挂（文档化的崩溃/挂起类）。就地兜底为 loadFailed，且不留半注册的在飞句柄。
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data::DetailLoad* load = nullptr;
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try {
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load = repo_.loadAsync(spec.loaderKey.toStdString(), dsId.toStdString(), pageNo, pageSize);
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} catch (const std::exception& e) {
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qWarning("[detail] loadAsync 失败 id=%s tab=%d key=%s: %s", qUtf8Printable(dsId), tabIndex,
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qUtf8Printable(spec.loaderKey), e.what());
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emit loadFailed(dsId, QStringLiteral("暂不支持该数据类型的预览"));
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return;
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}
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if (auto& prev = inflight_[tabIndex]) prev->abort(); // abort-and-replace 该槽位
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inflight_[tabIndex] = load;
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emit tabLoadStarted(dsId, tabIndex);
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QObject::connect(load, &data::DetailLoad::done, this,
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[this, load, dsId, tabIndex](const QVariant& payload) {
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if (load != inflight_.value(tabIndex)) return; // §5.0 句柄身份比对：丢弃迟到信号
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inflight_.remove(tabIndex);
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emit tabReady(dsId, tabIndex, payload);
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});
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QObject::connect(load, &data::DetailLoad::failed, this,
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[this, load, dsId, tabIndex](const QString& msg) {
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if (load != inflight_.value(tabIndex)) return;
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inflight_.remove(tabIndex);
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qWarning("[detail] 页签加载失败 id=%s tab=%d: %s", qUtf8Printable(dsId), tabIndex,
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qUtf8Printable(msg));
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emit loadFailed(dsId, msg);
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});
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}
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void DatasetDetailController::focusDataset(const QString& dsId) { emit focusRequested(dsId); }
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} // namespace geopro::controller
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