Initial commit
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Executable
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@@ -0,0 +1,474 @@
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#include "ui_QueryUi.h"
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#include "Query.h"
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#include "QueryThread.h"
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#include "AddLine.h"
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#include <QMessageBox>
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#include <QFileDialog>
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#include <QCheckBox>
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#include <QRadioButton>
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#include <QDebug>
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#ifdef Q_OS_WIN
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#define NEWLINE "\r\n"
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#else
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#define NEWLINE "\n"
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#endif
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Query::Query(//const QString &queryString,
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QueryWorker *queryWorker,
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QWidget* parent) // MV[C]
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: QWidget(parent)
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, m_ui(new Ui::Query)
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, m_model(new DataModel())
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, m_queryWorker(queryWorker)
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, m_addLines(nullptr)
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{
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m_ui->setupUi(this);
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setCustomQuery(); // for safety, disable table sensitive buttons, until table name is set
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qRegisterMetaType<QList<QModelIndex>>("QList<QModelIndex>");
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connect(m_ui->pbQueryDelete, &QPushButton::clicked, this, &Query::onQueryDelete);
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connect(m_ui->pbQueryInsert, &QPushButton::clicked, this, &Query::onQueryInsert);
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connect(m_ui->pbQueryUpdate, &QPushButton::clicked, this, &Query::onQueryUpdate);
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// NEW ARCH
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// Delete Lines
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connect(this, &Query::signalDeleteLines,
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queryWorker, &QueryWorker::slotDeleteLines); // request => QueryWorker
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connect(queryWorker, &QueryWorker::signalDeleteLinesResult,
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this, &Query::slotDeleteLinesResult); // reply => this
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// Custom Query
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connect(this, &Query::signalCustomQuery,
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queryWorker, &QueryWorker::slotCustomQuery);
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connect(queryWorker, &QueryWorker::signalCustomQueryResult,
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this, &Query::slotCustomQueryResult);
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// Table Query
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connect(this, &Query::signalTableQuery,
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queryWorker, &QueryWorker::slotTableQuery);
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connect(queryWorker, &QueryWorker::signalTableQueryResult,
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this, &Query::slotTableQueryResult);
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// Add Lines
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connect(this, &Query::signalAddLines,
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queryWorker, &QueryWorker::slotAddLines);
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connect(queryWorker, &QueryWorker::signalAddLinesResult,
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this, &Query::slotAddLinesResult);
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// Set Data
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connect(m_model, &DataModel::signalSetData, // comes from the model ..
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this, &Query::slotSetData);
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connect(this, &Query::signalSetData,
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queryWorker, &QueryWorker::slotSetData);
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connect(queryWorker, &QueryWorker::signalSetDataResult, // .. and comes back to THIS ! (query)
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this, &Query::slotSetDataResult);
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connect(m_ui->pbQuery, &QPushButton::clicked, this, &Query::slotCustomQuery);
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connect(m_ui->pbAddLine, &QPushButton::clicked, this, &Query::slotStartAddLines);
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connect(m_ui->pbDeleteLine, &QPushButton::clicked, this, &Query::slotDeleteLine);
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connect(m_ui->pbReload, &QPushButton::clicked, this, &Query::slotTableQuery);
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connect(m_ui->pbExport, &QPushButton::clicked, this, &Query::slotExportCSV);
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m_ui->dataTable->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); // TODO: qt4
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setModel();
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}
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Query::~Query()
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{
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delete m_ui;
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delete m_model;
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}
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void Query::slotExportCSV()
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{
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//qWarning() << "slotExportCSV";
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QFileDialog dialog(this); // save dialog
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//dialog.setFileMode(QFileDialog::ExistingFile); // single file selection
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dialog.setNameFilter(tr("CSV File (*.csv)"));
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dialog.setAcceptMode(QFileDialog::AcceptSave);
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QStringList fileNames;
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if (dialog.exec())
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fileNames = dialog.selectedFiles();
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if (!fileNames.count())
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{
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return;
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}
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QFile file;
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file.setFileName(fileNames.at(0));
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if (!file.open(QFile::ReadWrite))
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{
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QMessageBox::critical(this, tr("CSV Export Error"), tr("File '%1' is not accessible!").arg(fileNames.at(0)));
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return;
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}
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// file is open, now save to csv file
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int colCount = m_model->columnCount();
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// get column names
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QStringList columnNames;
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columnNames.reserve(colCount);
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for (int i = 0; i < colCount; i++)
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{
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columnNames.append(m_model->headerData(i, Qt::Horizontal).toString());
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}
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// get rows & row values
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QStringList rows;
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int rowsCount = m_sortModel.rowCount();
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rows.reserve(rowsCount);
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QStringList rowData;
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for (int row = 0; row < rowsCount; row++)
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{
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// get row's values
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rowData.clear();
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for (int col = 0; col < colCount; col++)
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{
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rowData.append(m_sortModel.data(m_sortModel.index(row, col)).toString());
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}
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rows.append(rowData.join(QLatin1Char(',')));
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}
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file.write(columnNames.join(QLatin1Char(',')).toUtf8()); // write header
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file.write(NEWLINE);
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for (const QString &row : qAsConst(rows))
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{
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file.write(row.toUtf8());
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file.write(NEWLINE);
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}
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file.close();
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QMessageBox::information(this, tr("CSV Export Success"), tr("CSV Export was successful"));
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}
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void Query::onQueryDelete()
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{
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m_ui->queryText->setText(tr("DELETE FROM %1 WHERE %2").arg(m_model->getTableName(), m_idInWhere ? QStringLiteral("id = ") : QString()));
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}
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void Query::onQueryInsert()
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{
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m_ui->queryText->setText(tr("INSERT INTO %1 (%2) VALUES ()").arg(m_model->getTableName(), checkedColumnsNames().join(QStringLiteral(", "))));
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}
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void Query::onQueryUpdate()
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{
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const QStringList sl = checkedColumnsNames();
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QStringList sl2;
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sl2.reserve(sl.size());
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for (const QString &s : sl)
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sl2.append(tr("%1 = ").arg(s));
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m_ui->queryText->setText(tr("UPDATE %1 SET %2 WHERE %3").arg(m_model->getTableName(), sl2.join(QStringLiteral(", ")), m_idInWhere ? QStringLiteral("id = ") : QString()));
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}
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void Query::handleError(const QString &errorText)
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{
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emit signalHideWait();
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if (errorText.isEmpty())
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return; // nothing to handle
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QMessageBox::critical(this, tr("Error while executing query"),
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tr("There was an error executing the query:\n%1").arg(errorText));
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}
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// Delete Lines
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void Query::slotDeleteLine() // called from UI
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{
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int result = QMessageBox::question(this, tr("SqlBrowser"),
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tr("Do you really want to delete selected data?"),
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QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
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if (result == QMessageBox::No)
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return;
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emit signalShowWait(QStringLiteral("Deleting line(s).."));
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const QModelIndexList unmapped = m_ui->dataTable->selectionModel()->selectedRows();
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QModelIndexList mapped;
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mapped.reserve(unmapped.size());
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for (const auto &idx : unmapped)
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mapped.append(m_sortModel.mapToSource(idx));
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emit signalDeleteLines(this, mapped, m_model); // => QueryWorker
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}
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void Query::slotDeleteLinesResult(Query* caller, int affectedRowsCount, QString errorText, const QList<QModelIndex> &affectedRowsList) // => from QueryWorker
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{
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if (caller != this)
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return;
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if (errorText.isEmpty() && !affectedRowsCount) // no error but no rows affected?
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{
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errorText = tr("The row to be deleted could not be found - This is probably a type-conversion error! Please report that to Mike");
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}
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handleError(errorText);
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//qWarning() << "Query::slotDeleteLinesResult: errorText = " << errorText << "affectedRowsCount = " << affectedRowsCount;
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if (affectedRowsCount == affectedRowsList.count())
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{
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m_model->deleteLines(affectedRowsList); // tell the model to delete that rows (and tell the view about it)
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}
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}
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// Custom Query
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void Query::slotCustomQuery()
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{
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emit signalShowWait(QStringLiteral("Executing query.."));
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emit signalCustomQuery(this, m_ui->queryText->document()->toPlainText(), m_model);
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}
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void Query::slotCustomQueryResult(Query* caller, const QString &errorText)
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{
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if (caller != this)
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return;
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setCustomQuery();
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handleError(errorText);
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//qWarning() << "Query::slotCustomQueryResult: errorText = " << errorText;
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}
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// Table Query
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void Query::slotTableQuery()
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{
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emit signalShowWait(QStringLiteral("Getting table data .."));
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//qWarning() << "Query: model" << m_model;
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emit signalTableQuery(this, m_model);
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}
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void Query::slotTableQueryResult(Query* caller, const QString &errorText)
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{
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if (caller != this)
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return;
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handleError(errorText);
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// Don't put it in twice
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if (!m_checkboxes.isEmpty())
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return;
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for(const auto &item : m_model->getHeaderList())
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{
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QCheckBox *cb = new QCheckBox(item.first, this);
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m_ui->checkboxes->addWidget(cb);
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m_checkboxes << cb;
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if (item.first.compare(QStringLiteral("id"), Qt::CaseInsensitive) != 0)
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continue;
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// Only for ID:
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QRadioButton *rbwhere = new QRadioButton(tr("in WHERE"), this);
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m_ui->checkboxes->addWidget(rbwhere);
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QRadioButton *rbnormal = new QRadioButton(tr("normal"), this);
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m_ui->checkboxes->addWidget(rbnormal);
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rbnormal->setEnabled(cb->isChecked());
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rbwhere->setEnabled(cb->isChecked());
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connect(cb, &QCheckBox::toggled, rbwhere, &QRadioButton::setEnabled);
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connect(cb, &QCheckBox::toggled, rbnormal, &QRadioButton::setEnabled);
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connect(rbwhere, &QRadioButton::toggled, this, [this, rbwhere, cb] { m_idInWhere = rbwhere->isChecked() && cb->isChecked(); });
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connect(cb, &QRadioButton::toggled, this, [this, rbwhere, cb] { m_idInWhere = rbwhere->isChecked() && cb->isChecked(); });
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rbwhere->setChecked(true);
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}
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m_ui->checkboxes->addItem(new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum));
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//qWarning() << "Query::slotTableQueryResult: errorText = " << errorText;
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}
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QStringList Query::checkedColumnsNames() const
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{
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QStringList sl;
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for(const auto &cb : m_checkboxes)
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{
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if (cb->isChecked())
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{
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if ((cb->text().compare(QStringLiteral("id"), Qt::CaseInsensitive) == 0) && m_idInWhere)
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continue;
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sl << cb->text();
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}
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}
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return sl;
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}
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// Add Lines
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void Query::slotStartAddLines()
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{
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if (!m_addLines)
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{
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m_addLines = new AddLines(this);
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connect(m_addLines, &AddLines::signalAddLines,
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this, &Query::slotAddLines);
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m_addLines->copyDataFromModel(m_model);
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}
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m_addLines->show();
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}
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void Query::slotAddLines(AddModel *model)
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{
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emit signalShowWait(QStringLiteral("Adding line(s).."));
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emit signalAddLines(this, model);
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}
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void Query::slotAddLinesResult(Query* caller, int , const QString &errorText)
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{
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if (caller != this)
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return;
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handleError(errorText);
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//qWarning() << "Query::slotAddLinesResult: affectedRows = " << affectedRows << "errorText = " << errorText;
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if (errorText.isEmpty()) // no error
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{
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// if (affectedRows) // only get new data when something changed
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// {
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// emit signalTableQuery(m_model); // re-get table!
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// }
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m_addLines->deleteLater(); // done, close add lines window and delete it..
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m_addLines = nullptr;
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emit signalTableQuery(this, m_model); // get fresh data from db
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}
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else // error
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{
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if (!m_addLines) // FIXME: needed! but not logically needed ;) what's going on here?
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{
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//qWarning() << "Query::slotAddLinesResult: !m_addLines";
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}
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else
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m_addLines->show(); // show again, error!
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}
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}
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// Set Data
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void Query::slotSetData(DataModel* model, const QModelIndex &index, const QVariant &val)
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{
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int result = QMessageBox::question(this, tr("SqlBrowser"),
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tr("Do you really want to change the data?"),
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QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
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if (result == QMessageBox::No)
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return;
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emit signalShowWait(QStringLiteral("Setting data.."));
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emit signalSetData(this, model, index, val);
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}
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void Query::slotSetDataResult(Query* caller, const QString &errorText)
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{
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if (caller != this)
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return;
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handleError(errorText);
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//qWarning() << "Query::slotSetDataResult: errorText =" << errorText;
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}
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void Query::setTable(const QString &tableName)
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{
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emit signalShowWait(QStringLiteral("Updating value.."));
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if (tableName.isEmpty())
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{
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//qWarning() << "Query::setTable: tableName.isEmpty()";
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return;
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}
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m_model->setTableName(tableName);
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setTableQuery();
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slotTableQuery();
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}
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void Query::setModel()
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{
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m_sortModel.setSourceModel(m_model);
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m_ui->dataTable->setModel(/*(QAbstractTableModel*)*/&m_sortModel);
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}
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void Query::setCustomQuery() // cannot add/delete/reload
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{
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m_ui->pbAddLine->setEnabled(false);
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m_ui->pbDeleteLine->setEnabled(false);
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m_ui->pbReload->setEnabled(false);
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}
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void Query::setTableQuery() // cannot add/delete/reload
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{
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m_ui->pbAddLine->setEnabled(true);
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m_ui->pbDeleteLine->setEnabled(true);
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m_ui->pbReload->setEnabled(true);
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}
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Reference in new issue
Block a user