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Rename Create Index dialog to Edit Index dialog
Just like the Edit Table dialog, this dialog handles both creating and editing. For consistency's sake this dialog is therefore renamed to Edit Index dialog.
This commit is contained in:
Martin Kleusberg
170
src/EditIndexDialog.cpp
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170
src/EditIndexDialog.cpp
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#include "EditIndexDialog.h"
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#include "ui_EditIndexDialog.h"
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#include "sqlitedb.h"
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#include <QMessageBox>
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#include <QPushButton>
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EditIndexDialog::EditIndexDialog(DBBrowserDB& db, const QString& indexName, bool createIndex, QWidget* parent)
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: QDialog(parent),
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pdb(db),
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curIndex(indexName),
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index(indexName),
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newIndex(createIndex),
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ui(new Ui::EditIndexDialog)
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{
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// Create UI
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ui->setupUi(this);
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// Get list of tables, sort it alphabetically and fill the combobox
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QMultiMap<QString, DBBrowserObject> dbobjs;
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QList<DBBrowserObject> tables = pdb.objMap.values("table");
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for(auto it=tables.constBegin();it!=tables.constEnd();++it)
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dbobjs.insert((*it).getname(), (*it));
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ui->comboTableName->blockSignals(true);
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for(auto it=dbobjs.constBegin();it!=dbobjs.constEnd();++it)
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ui->comboTableName->addItem(QIcon(QString(":icons/table")), (*it).getname());
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ui->comboTableName->blockSignals(false);
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QHeaderView *tableHeaderView = ui->tableIndexColumns->horizontalHeader();
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tableHeaderView->setSectionResizeMode(0, QHeaderView::Stretch);
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// Editing an existing index?
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if(!newIndex)
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{
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// Load the current layour and fill in the dialog fields
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index = pdb.getObjectByName(curIndex).index;
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ui->editIndexName->blockSignals(true);
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ui->editIndexName->setText(index.name());
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ui->editIndexName->blockSignals(false);
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ui->checkIndexUnique->blockSignals(true);
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ui->checkIndexUnique->setChecked(index.unique());
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ui->checkIndexUnique->blockSignals(false);
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ui->comboTableName->blockSignals(true);
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ui->comboTableName->setCurrentText(index.table());
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ui->comboTableName->blockSignals(false);
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tableChanged(index.table(), true);
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} else {
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tableChanged(ui->comboTableName->currentText(), false);
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}
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// Refresh SQL preview
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updateSqlText();
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}
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EditIndexDialog::~EditIndexDialog()
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{
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delete ui;
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}
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void EditIndexDialog::tableChanged(const QString& new_table, bool initialLoad)
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{
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// Set the table name and clear all index columns
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if(!initialLoad)
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{
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index.setTable(new_table);
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index.clearColumns();
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}
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// And fill the table again
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QStringList fields = pdb.getObjectByName(new_table).table.fieldNames();
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ui->tableIndexColumns->setRowCount(fields.size());
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for(int i=0; i < fields.size(); ++i)
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{
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// Put the name of the field in the first column
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QTableWidgetItem* name = new QTableWidgetItem(fields.at(i));
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name->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
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ui->tableIndexColumns->setItem(i, 0, name);
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// Put a checkbox to enable usage in the index of this field in the second column
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QCheckBox* enabled = new QCheckBox(this);
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if(initialLoad && index.findColumn(fields.at(i)) != -1)
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enabled->setCheckState(Qt::Checked);
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else
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enabled->setCheckState(Qt::Unchecked);
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ui->tableIndexColumns->setCellWidget(i, 1, enabled);
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connect(enabled, static_cast<void(QCheckBox::*)(bool)>(&QCheckBox::toggled),
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[=](bool use_in_index)
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{
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if(use_in_index)
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{
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index.addColumn(sqlb::IndexedColumnPtr(new sqlb::IndexedColumn(
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ui->tableIndexColumns->item(i, 0)->text(),
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false,
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qobject_cast<QComboBox*>(ui->tableIndexColumns->cellWidget(i, 2))->currentText())));
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} else {
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index.removeColumn(ui->tableIndexColumns->item(i, 0)->text());
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}
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checkInput();
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updateSqlText();
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});
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// And put a combobox to select the order in which to index the field in the last column
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QComboBox* order = new QComboBox(this);
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order->addItem("");
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order->addItem("ASC");
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order->addItem("DESC");
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if(initialLoad && index.findColumn(fields.at(i)) != -1)
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order->setCurrentText(index.column(index.findColumn(fields.at(i)))->order());
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ui->tableIndexColumns->setCellWidget(i, 2, order);
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connect(order, static_cast<void(QComboBox::*)(const QString&)>(&QComboBox::currentTextChanged),
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[=](QString new_order)
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{
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int colnum = index.findColumn(fields.at(i));
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if(colnum != -1)
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{
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index.column(colnum)->setOrder(new_order);
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updateSqlText();
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}
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});
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}
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updateSqlText();
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}
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void EditIndexDialog::checkInput()
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{
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// Check if index name is set
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bool valid = true;
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if(ui->editIndexName->text().isEmpty())
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valid = false;
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// Check if index has any columns
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if(index.columns().size() == 0)
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valid = false;
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// Only activate OK button if index data is valid
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ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(valid);
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// Set the index name and the unique flag
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index.setName(ui->editIndexName->text());
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index.setUnique(ui->checkIndexUnique->isChecked());
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updateSqlText();
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}
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void EditIndexDialog::accept()
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{
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// When editing an index, delete the old one first
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if(!newIndex)
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{
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if(!pdb.executeSQL(QString("DROP INDEX %1;").arg(sqlb::escapeIdentifier(curIndex))))
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{
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QMessageBox::warning(this, qApp->applicationName(), tr("Deleting the old index failed:\n%1").arg(pdb.lastError()));
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return;
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}
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}
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// Create the new index
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if(pdb.executeSQL(index.sql()))
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QDialog::accept();
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else
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QMessageBox::warning(this, QApplication::applicationName(), tr("Creating the index failed:\n%1").arg(pdb.lastError()));
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}
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void EditIndexDialog::updateSqlText()
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{
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ui->sqlTextEdit->setText(index.sql());
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}
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