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https://github.com/sqlitebrowser/sqlitebrowser.git
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0bcdb97572
When browsing a table in the Browse Data tab of the main window you can move the focus to the next cell by pressing the tab key. This commit improves this behaviour by checking if the tab key has been while the last cell of the last row is focused. If this is the case a new, empty row is inserted automatically into the table. See issue #209.
120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
#include "ExtendedTableWidget.h"
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#include "sqlitetablemodel.h"
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#include "FilterTableHeader.h"
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#include <QApplication>
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#include <QClipboard>
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#include <QKeySequence>
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#include <QKeyEvent>
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#include <QScrollBar>
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#include <QHeaderView>
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ExtendedTableWidget::ExtendedTableWidget(QWidget* parent) :
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QTableView(parent)
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{
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setHorizontalScrollMode(ExtendedTableWidget::ScrollPerPixel);
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connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(vscrollbarChanged(int)));
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// Set up filter row
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m_tableHeader = new FilterTableHeader(this);
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setHorizontalHeader(m_tableHeader);
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}
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void ExtendedTableWidget::copy()
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{
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// Get list of selected items
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QItemSelectionModel* selection = selectionModel();
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QModelIndexList indices = selection->selectedIndexes();
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// Abort if there's nothing to copy
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if(indices.size() == 0)
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{
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return;
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} else if(indices.size() == 1) {
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qApp->clipboard()->setText(indices.front().data().toString());
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return;
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}
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// Sort the items by row, then by column
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qSort(indices);
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// Go through all the items...
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QString result;
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QModelIndex prev = indices.front();
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indices.removeFirst();
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foreach(QModelIndex index, indices)
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{
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// Add the content of this cell to the clipboard string
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result.append(QString("\"%1\"").arg(prev.data().toString()));
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// If this is a new row add a line break, if not add a tab for cell separation
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if(index.row() != prev.row())
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result.append("\r\n");
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else
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result.append("\t");
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prev = index;
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}
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result.append(QString("\"%1\"\r\n").arg(indices.last().data().toString())); // And the last cell
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// And finally add it to the clipboard
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qApp->clipboard()->setText(result);
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}
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void ExtendedTableWidget::keyPressEvent(QKeyEvent* event)
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{
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// Call a custom copy method when Ctrl-C is pressed
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if(event->matches(QKeySequence::Copy))
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{
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copy();
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} else if(event->key() == Qt::Key_Tab && hasFocus() &&
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selectedIndexes().count() == 1 &&
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selectedIndexes().at(0).row() == model()->rowCount()-1 && selectedIndexes().at(0).column() == model()->columnCount()-1) {
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// If the Tab key was pressed while the focus was on the last cell of the last row insert a new row automatically
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model()->insertRow(model()->rowCount());
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}
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// This prevents the current selection from being changed when pressing tab to move to the next filter. Note that this is in an 'if' condition,
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// not in an 'else if' because this way, when the tab key was pressed and the focus was on the last cell, a new row is inserted and then the tab
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// key press is processed a second time to move the cursor as well
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if((event->key() != Qt::Key_Tab && event->key() != Qt::Key_Backtab) || hasFocus())
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QTableView::keyPressEvent(event);
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}
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void ExtendedTableWidget::updateGeometries()
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{
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// Call the parent implementation first - it does most of the actual logic
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QTableView::updateGeometries();
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// Check if a model has already been set yet
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if(model())
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{
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// If so and if it is a SqliteTableModel and if the parent implementation of this method decided that a scrollbar is needed, update its maximum value
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SqliteTableModel* m = qobject_cast<SqliteTableModel*>(model());
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if(m && verticalScrollBar()->maximum())
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verticalScrollBar()->setMaximum(m->totalRowCount() - numVisibleRows() + 1);
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}
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}
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void ExtendedTableWidget::vscrollbarChanged(int value)
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{
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// Cancel if there is no model set yet - this shouldn't happen (because without a model there should be no scrollbar) but just to be sure...
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if(!model())
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return;
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// Fetch more data from the DB if necessary
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if((value + numVisibleRows()) >= model()->rowCount() && model()->canFetchMore(QModelIndex()))
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model()->fetchMore(QModelIndex());
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}
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int ExtendedTableWidget::numVisibleRows()
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{
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// Get the row numbers of the rows currently visible at the top and the bottom of the widget
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int row_top = rowAt(0) == -1 ? 0 : rowAt(0);
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int row_bottom = rowAt(height()) == -1 ? model()->rowCount() : rowAt(height());
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// Calculate the number of visible rows
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return row_bottom - row_top;
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}
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