Fix the text of the toolbar actions for deleting and modifying objects

When selecting an object other than a table the toolbar actions would
say "Modify/Delete Table" nonetheless. I don't remember it being this
way, so I suspect this was changed by updating to Qt 5. Either way, this
commit makes absolutely sure the texts are updated properly.

src/MainWindow.cpp

@@ -256,6 +256,16 @@ void MainWindow::init()
    statusEncodingLabel->setToolTip(tr("Database encoding"));
    ui->statusbar->addPermanentWidget(statusEncodingLabel);

    // When changing the text of the toolbar actions, also automatically change their icon text and their tooltip text
    connect(ui->editModifyObjectAction, &QAction::changed, [=]() {
        ui->editModifyObjectAction->setIconText(ui->editModifyObjectAction->text());
        ui->editModifyObjectAction->setToolTip(ui->editModifyObjectAction->text());
    });
    connect(ui->editDeleteObjectAction, &QAction::changed, [=]() {
        ui->editDeleteObjectAction->setIconText(ui->editDeleteObjectAction->text());
        ui->editDeleteObjectAction->setToolTip(ui->editDeleteObjectAction->text());
    });

    // Connect some more signals and slots
    connect(ui->dataTable->filterHeader(), SIGNAL(sectionClicked(int)), this, SLOT(browseTableHeaderClicked(int)));
    connect(ui->dataTable->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(setRecordsetLabel()));
@@ -1411,7 +1421,7 @@ void MainWindow::createTreeContextMenu(const QPoint &qPoint)
    if(type == "table" || type == "view" || type == "trigger" || type == "index")
        popupTableMenu->exec(ui->dbTreeWidget->mapToGlobal(qPoint));
}
//** Tree selection changed

void MainWindow::changeTreeSelection()
{
    // Just assume first that something's selected that can not be edited at all
@@ -1436,24 +1446,16 @@ void MainWindow::changeTreeSelection()

    if (type == "view") {
        ui->editDeleteObjectAction->setText(tr("Delete View"));
        ui->editDeleteObjectAction->setToolTip(tr("Delete View"));
        ui->editModifyObjectAction->setText(tr("Modify View"));
        ui->editModifyObjectAction->setToolTip(tr("Modify View"));
    } else if(type == "trigger") {
        ui->editDeleteObjectAction->setText(tr("Delete Trigger"));
        ui->editDeleteObjectAction->setToolTip(tr("Delete Trigger"));
        ui->editModifyObjectAction->setText(tr("Modify Trigger"));
        ui->editModifyObjectAction->setToolTip(tr("Modify Trigger"));
    } else if(type == "index") {
        ui->editDeleteObjectAction->setText(tr("Delete Index"));
        ui->editDeleteObjectAction->setToolTip(tr("Delete Index"));
        ui->editModifyObjectAction->setText(tr("Modify Index"));
        ui->editModifyObjectAction->setToolTip(tr("Modify Index"));
    } else {
        ui->editDeleteObjectAction->setText(tr("Delete Table"));
        ui->editDeleteObjectAction->setToolTip(tr("Delete Table"));
        ui->editModifyObjectAction->setText(tr("Modify Table"));
        ui->editModifyObjectAction->setToolTip(tr("Modify Table"));
    }

    // Activate actions