Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2017 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.examples.controlexample; import static org.eclipse.swt.events.SelectionListener.widgetSelectedAdapter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Item; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Widget; class TableTab extends ScrollableTab { /* Example widgets and groups that contain them */ Table table1; Group tableGroup; /* Size widgets added to the "Size" group */ Button packColumnsButton; /* Style widgets added to the "Style" group */ Button noScrollButton, checkButton, fullSelectionButton, hideSelectionButton; /* Other widgets added to the "Other" group */ Button multipleColumns, moveableColumns, resizableColumns, headerVisibleButton, sortIndicatorButton, headerImagesButton, linesVisibleButton, subImagesButton; /* Controls and resources added to the "Colors and Fonts" group */ static final int ITEM_FOREGROUND_COLOR = 3; static final int ITEM_BACKGROUND_COLOR = 4; static final int ITEM_FONT = 5; static final int CELL_FOREGROUND_COLOR = 6; static final int CELL_BACKGROUND_COLOR = 7; static final int CELL_FONT = 8; static final int HEADER_FOREGROUND_COLOR = 9; static final int HEADER_BACKGROUND_COLOR = 10; Color itemForegroundColor, itemBackgroundColor, cellForegroundColor, cellBackgroundColor, headerForegroundColor, headerBackgroundColor; Font itemFont, cellFont; static String[] columnTitles = { ControlExample.getResourceString("TableTitle_0"), ControlExample.getResourceString("TableTitle_1"), ControlExample.getResourceString("TableTitle_2"), ControlExample.getResourceString("TableTitle_3") }; static String[][] tableData = { { ControlExample.getResourceString("TableLine0_0"), ControlExample.getResourceString("TableLine0_1"), ControlExample.getResourceString("TableLine0_2"), ControlExample.getResourceString("TableLine0_3") }, { ControlExample.getResourceString("TableLine1_0"), ControlExample.getResourceString("TableLine1_1"), ControlExample.getResourceString("TableLine1_2"), ControlExample.getResourceString("TableLine1_3") }, { ControlExample.getResourceString("TableLine2_0"), ControlExample.getResourceString("TableLine2_1"), ControlExample.getResourceString("TableLine2_2"), ControlExample.getResourceString("TableLine2_3") } }; Point menuMouseCoords; /** * Creates the Tab within a given instance of ControlExample. */ TableTab(ControlExample instance) { super(instance); } /** * Creates the "Colors and Fonts" group. */ @Override void createColorAndFontGroup() { super.createColorAndFontGroup(); TableItem item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Item_Foreground_Color")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Item_Background_Color")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Item_Font")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Cell_Foreground_Color")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Cell_Background_Color")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Cell_Font")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Header_Foreground_Color")); item = new TableItem(colorAndFontTable, SWT.None); item.setText(ControlExample.getResourceString("Header_Background_Color")); shell.addDisposeListener(event -> { if (itemBackgroundColor != null) itemBackgroundColor.dispose(); if (itemForegroundColor != null) itemForegroundColor.dispose(); if (itemFont != null) itemFont.dispose(); if (cellBackgroundColor != null) cellBackgroundColor.dispose(); if (cellForegroundColor != null) cellForegroundColor.dispose(); if (cellFont != null) cellFont.dispose(); if (headerBackgroundColor != null) headerBackgroundColor.dispose(); if (headerForegroundColor != null) headerForegroundColor.dispose(); itemBackgroundColor = null; itemForegroundColor = null; itemFont = null; cellBackgroundColor = null; cellForegroundColor = null; cellFont = null; headerForegroundColor = null; headerBackgroundColor = null; }); } @Override void changeFontOrColor(int index) { switch (index) { case ITEM_FOREGROUND_COLOR: { Color oldColor = itemForegroundColor; if (oldColor == null) oldColor = table1.getItem(0).getForeground(); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = itemForegroundColor; itemForegroundColor = new Color(display, rgb); setItemForeground(); if (oldColor != null) oldColor.dispose(); } break; case ITEM_BACKGROUND_COLOR: { Color oldColor = itemBackgroundColor; if (oldColor == null) oldColor = table1.getItem(0).getBackground(); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = itemBackgroundColor; itemBackgroundColor = new Color(display, rgb); setItemBackground(); if (oldColor != null) oldColor.dispose(); } break; case ITEM_FONT: { Font oldFont = itemFont; if (oldFont == null) oldFont = table1.getItem(0).getFont(); fontDialog.setFontList(oldFont.getFontData()); FontData fontData = fontDialog.open(); if (fontData == null) return; oldFont = itemFont; itemFont = new Font(display, fontData); setItemFont(); setExampleWidgetSize(); if (oldFont != null) oldFont.dispose(); } break; case CELL_FOREGROUND_COLOR: { Color oldColor = cellForegroundColor; if (oldColor == null) oldColor = table1.getItem(0).getForeground(1); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = cellForegroundColor; cellForegroundColor = new Color(display, rgb); setCellForeground(); if (oldColor != null) oldColor.dispose(); } break; case CELL_BACKGROUND_COLOR: { Color oldColor = cellBackgroundColor; if (oldColor == null) oldColor = table1.getItem(0).getBackground(1); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = cellBackgroundColor; cellBackgroundColor = new Color(display, rgb); setCellBackground(); if (oldColor != null) oldColor.dispose(); } break; case CELL_FONT: { Font oldFont = cellFont; if (oldFont == null) oldFont = table1.getItem(0).getFont(1); fontDialog.setFontList(oldFont.getFontData()); FontData fontData = fontDialog.open(); if (fontData == null) return; oldFont = cellFont; cellFont = new Font(display, fontData); setCellFont(); setExampleWidgetSize(); if (oldFont != null) oldFont.dispose(); } break; case HEADER_FOREGROUND_COLOR: { Color oldColor = headerForegroundColor; if (oldColor == null) oldColor = table1.getHeaderForeground(); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = headerForegroundColor; headerForegroundColor = new Color(display, rgb); setHeaderForeground(); if (oldColor != null) oldColor.dispose(); } break; case HEADER_BACKGROUND_COLOR: { Color oldColor = headerBackgroundColor; if (oldColor == null) oldColor = table1.getHeaderBackground(); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb == null) return; oldColor = headerBackgroundColor; headerBackgroundColor = new Color(display, rgb); setHeaderBackground(); if (oldColor != null) oldColor.dispose(); } break; default: super.changeFontOrColor(index); } } /** * Creates the "Other" group. */ @Override void createOtherGroup() { super.createOtherGroup(); /* Create display controls specific to this example */ linesVisibleButton = new Button(otherGroup, SWT.CHECK); linesVisibleButton.setText(ControlExample.getResourceString("Lines_Visible")); multipleColumns = new Button(otherGroup, SWT.CHECK); multipleColumns.setText(ControlExample.getResourceString("Multiple_Columns")); multipleColumns.setSelection(true); headerVisibleButton = new Button(otherGroup, SWT.CHECK); headerVisibleButton.setText(ControlExample.getResourceString("Header_Visible")); sortIndicatorButton = new Button(otherGroup, SWT.CHECK); sortIndicatorButton.setText(ControlExample.getResourceString("Sort_Indicator")); moveableColumns = new Button(otherGroup, SWT.CHECK); moveableColumns.setText(ControlExample.getResourceString("Moveable_Columns")); resizableColumns = new Button(otherGroup, SWT.CHECK); resizableColumns.setText(ControlExample.getResourceString("Resizable_Columns")); headerImagesButton = new Button(otherGroup, SWT.CHECK); headerImagesButton.setText(ControlExample.getResourceString("Header_Images")); subImagesButton = new Button(otherGroup, SWT.CHECK); subImagesButton.setText(ControlExample.getResourceString("Sub_Images")); /* Add the listeners */ linesVisibleButton.addSelectionListener(widgetSelectedAdapter(event -> setWidgetLinesVisible())); multipleColumns.addSelectionListener(widgetSelectedAdapter(event -> recreateExampleWidgets())); headerVisibleButton.addSelectionListener(widgetSelectedAdapter(event -> setWidgetHeaderVisible())); sortIndicatorButton.addSelectionListener(widgetSelectedAdapter(event -> setWidgetSortIndicator())); moveableColumns.addSelectionListener(widgetSelectedAdapter(event -> setColumnsMoveable())); resizableColumns.addSelectionListener(widgetSelectedAdapter(event -> setColumnsResizable())); headerImagesButton.addSelectionListener(widgetSelectedAdapter(event -> recreateExampleWidgets())); subImagesButton.addSelectionListener(widgetSelectedAdapter(event -> recreateExampleWidgets())); } /** * Creates the "Example" group. */ @Override void createExampleGroup() { super.createExampleGroup(); /* Create a group for the table */ tableGroup = new Group(exampleGroup, SWT.NONE); tableGroup.setLayout(new GridLayout()); tableGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); tableGroup.setText("Table"); } /** * Creates the "Example" widgets. */ @Override void createExampleWidgets() { /* Compute the widget style */ int style = getDefaultStyle(); if (singleButton.getSelection()) style |= SWT.SINGLE; if (multiButton.getSelection()) style |= SWT.MULTI; if (verticalButton.getSelection()) style |= SWT.V_SCROLL; if (horizontalButton.getSelection()) style |= SWT.H_SCROLL; if (noScrollButton.getSelection()) style |= SWT.NO_SCROLL; if (checkButton.getSelection()) style |= SWT.CHECK; if (fullSelectionButton.getSelection()) style |= SWT.FULL_SELECTION; if (hideSelectionButton.getSelection()) style |= SWT.HIDE_SELECTION; if (borderButton.getSelection()) style |= SWT.BORDER; /* Create the table widget */ table1 = new Table(tableGroup, style); /* Fill the table with data */ boolean multiColumn = multipleColumns.getSelection(); if (multiColumn) { for (int i = 0; i < columnTitles.length; i++) { TableColumn tableColumn = new TableColumn(table1, SWT.NONE); tableColumn.setText(columnTitles[i]); tableColumn.setToolTipText(ControlExample.getResourceString("Tooltip", columnTitles[i])); if (headerImagesButton.getSelection()) tableColumn.setImage(instance.images[i % 3]); } table1.setSortColumn(table1.getColumn(0)); } for (int i = 0; i < 16; i++) { TableItem item = new TableItem(table1, SWT.NONE); if (multiColumn && subImagesButton.getSelection()) { for (int j = 0; j < columnTitles.length; j++) { item.setImage(j, instance.images[i % 3]); } } else { item.setImage(instance.images[i % 3]); } setItemText(item, i, ControlExample.getResourceString("Index") + i); } packColumns(); } void setItemText(TableItem item, int i, String node) { int index = i % 3; if (multipleColumns.getSelection()) { tableData[index][0] = node; item.setText(tableData[index]); } else { item.setText(node); } } /** * Creates the "Size" group. The "Size" group contains * controls that allow the user to change the size of * the example widgets. */ @Override void createSizeGroup() { super.createSizeGroup(); packColumnsButton = new Button(sizeGroup, SWT.PUSH); packColumnsButton.setText(ControlExample.getResourceString("Pack_Columns")); packColumnsButton.addSelectionListener(widgetSelectedAdapter(event -> { packColumns(); setExampleWidgetSize(); })); } /** * Creates the "Style" group. */ @Override void createStyleGroup() { super.createStyleGroup(); /* Create the extra widgets */ noScrollButton = new Button(styleGroup, SWT.CHECK); noScrollButton.setText("SWT.NO_SCROLL"); noScrollButton.moveAbove(borderButton); checkButton = new Button(styleGroup, SWT.CHECK); checkButton.setText("SWT.CHECK"); fullSelectionButton = new Button(styleGroup, SWT.CHECK); fullSelectionButton.setText("SWT.FULL_SELECTION"); hideSelectionButton = new Button(styleGroup, SWT.CHECK); hideSelectionButton.setText("SWT.HIDE_SELECTION"); } /** * Gets the "Example" widget children's items, if any. * * @return an array containing the example widget children's items */ @Override Item[] getExampleWidgetItems() { Item[] columns = table1.getColumns(); Item[] items = table1.getItems(); Item[] allItems = new Item[columns.length + items.length]; System.arraycopy(columns, 0, allItems, 0, columns.length); System.arraycopy(items, 0, allItems, columns.length, items.length); return allItems; } /** * Gets the "Example" widget children. */ @Override Widget[] getExampleWidgets() { return new Widget[] { table1 }; } /** * Returns a list of set/get API method names (without the set/get prefix) * that can be used to set/get values in the example control(s). */ @Override String[] getMethodNames() { return new String[] { "ColumnOrder", "ItemCount", "Selection", "SelectionIndex", "ToolTipText", "TopIndex" }; } @Override String setMethodName(String methodRoot) { /* Override to handle special case of int getSelectionIndex()/setSelection(int) */ return (methodRoot.equals("SelectionIndex")) ? "setSelection" : "set" + methodRoot; } void packColumns() { int columnCount = table1.getColumnCount(); for (int i = 0; i < columnCount; i++) { TableColumn tableColumn = table1.getColumn(i); tableColumn.pack(); } } @Override Object[] parameterForType(String typeName, String value, Widget widget) { if (value.isEmpty()) return new Object[] { new TableItem[0] }; // bug in Table? if (typeName.equals("org.eclipse.swt.widgets.TableItem")) { TableItem item = findItem(value, ((Table) widget).getItems()); if (item != null) return new Object[] { item }; } if (typeName.equals("[Lorg.eclipse.swt.widgets.TableItem;")) { String[] values = split(value, ','); TableItem[] items = new TableItem[values.length]; for (int i = 0; i < values.length; i++) { items[i] = findItem(values[i], ((Table) widget).getItems()); } return new Object[] { items }; } return super.parameterForType(typeName, value, widget); } TableItem findItem(String value, TableItem[] items) { for (TableItem item : items) { if (item.getText().equals(value)) return item; } return null; } /** * Gets the text for the tab folder item. */ @Override String getTabText() { return "Table"; } /** * Sets the foreground color, background color, and font * of the "Example" widgets to their default settings. * Also sets foreground and background color of TableItem [0] * to default settings. */ @Override void resetColorsAndFonts() { super.resetColorsAndFonts(); Color oldColor = itemForegroundColor; itemForegroundColor = null; setItemForeground(); if (oldColor != null) oldColor.dispose(); oldColor = itemBackgroundColor; itemBackgroundColor = null; setItemBackground(); if (oldColor != null) oldColor.dispose(); Font oldFont = font; itemFont = null; setItemFont(); if (oldFont != null) oldFont.dispose(); oldColor = cellForegroundColor; cellForegroundColor = null; setCellForeground(); if (oldColor != null) oldColor.dispose(); oldColor = cellBackgroundColor; cellBackgroundColor = null; setCellBackground(); if (oldColor != null) oldColor.dispose(); oldFont = font; cellFont = null; setCellFont(); if (oldFont != null) oldFont.dispose(); oldColor = headerBackgroundColor; headerBackgroundColor = null; setHeaderBackground(); if (oldColor != null) oldColor.dispose(); oldColor = headerForegroundColor; headerForegroundColor = null; setHeaderForeground(); if (oldColor != null) oldColor.dispose(); } /** * Sets the background color of the Row 0 TableItem in column 1. */ void setCellBackground() { if (!instance.startup) { table1.getItem(0).setBackground(1, cellBackgroundColor); } /* Set the background color item's image to match the background color of the cell. */ Color color = cellBackgroundColor; if (color == null) color = table1.getItem(0).getBackground(1); TableItem item = colorAndFontTable.getItem(CELL_BACKGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } /** * Sets the foreground color of the Row 0 TableItem in column 1. */ void setCellForeground() { if (!instance.startup) { table1.getItem(0).setForeground(1, cellForegroundColor); } /* Set the foreground color item's image to match the foreground color of the cell. */ Color color = cellForegroundColor; if (color == null) color = table1.getItem(0).getForeground(1); TableItem item = colorAndFontTable.getItem(CELL_FOREGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } /** * Sets the font of the Row 0 TableItem in column 1. */ void setCellFont() { if (!instance.startup) { table1.getItem(0).setFont(1, cellFont); } /* Set the font item's image to match the font of the item. */ Font ft = cellFont; if (ft == null) ft = table1.getItem(0).getFont(1); TableItem item = colorAndFontTable.getItem(CELL_FONT); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(fontImage(ft)); item.setFont(ft); colorAndFontTable.layout(); } /** * Sets the background color of TableItem [0]. */ void setItemBackground() { if (!instance.startup) { table1.getItem(0).setBackground(itemBackgroundColor); } /* Set the background color item's image to match the background color of the item. */ Color color = itemBackgroundColor; if (color == null) color = table1.getItem(0).getBackground(); TableItem item = colorAndFontTable.getItem(ITEM_BACKGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } /** * Sets the foreground color of TableItem [0]. */ void setItemForeground() { if (!instance.startup) { table1.getItem(0).setForeground(itemForegroundColor); } /* Set the foreground color item's image to match the foreground color of the item. */ Color color = itemForegroundColor; if (color == null) color = table1.getItem(0).getForeground(); TableItem item = colorAndFontTable.getItem(ITEM_FOREGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } /** * Sets the font of TableItem 0. */ void setItemFont() { if (!instance.startup) { table1.getItem(0).setFont(itemFont); } /* Set the font item's image to match the font of the item. */ Font ft = itemFont; if (ft == null) ft = table1.getItem(0).getFont(); TableItem item = colorAndFontTable.getItem(ITEM_FONT); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(fontImage(ft)); item.setFont(ft); colorAndFontTable.layout(); } void setHeaderBackground() { if (!instance.startup) { table1.setHeaderBackground(headerBackgroundColor); } /* Set the header background color item's image to match the header background color. */ Color color = headerBackgroundColor; if (color == null) color = table1.getHeaderBackground(); TableItem item = colorAndFontTable.getItem(HEADER_BACKGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } void setHeaderForeground() { if (!instance.startup) { table1.setHeaderForeground(headerForegroundColor); } /* Set the header foreground color item's image to match the header foreground color. */ Color color = headerForegroundColor; if (color == null) color = table1.getHeaderForeground(); TableItem item = colorAndFontTable.getItem(HEADER_FOREGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage != null) oldImage.dispose(); item.setImage(colorImage(color)); } /** * Sets the moveable columns state of the "Example" widgets. */ void setColumnsMoveable() { boolean selection = moveableColumns.getSelection(); TableColumn[] columns = table1.getColumns(); for (TableColumn column : columns) { column.setMoveable(selection); } } /** * Sets the resizable columns state of the "Example" widgets. */ void setColumnsResizable() { boolean selection = resizableColumns.getSelection(); TableColumn[] columns = table1.getColumns(); for (TableColumn column : columns) { column.setResizable(selection); } } /** * Sets the state of the "Example" widgets. */ @Override void setExampleWidgetState() { setItemBackground(); setItemForeground(); setItemFont(); setCellBackground(); setCellForeground(); setCellFont(); setHeaderBackground(); setHeaderForeground(); if (!instance.startup) { setColumnsMoveable(); setColumnsResizable(); setWidgetHeaderVisible(); setWidgetSortIndicator(); setWidgetLinesVisible(); } super.setExampleWidgetState(); noScrollButton.setSelection((table1.getStyle() & SWT.NO_SCROLL) != 0); checkButton.setSelection((table1.getStyle() & SWT.CHECK) != 0); fullSelectionButton.setSelection((table1.getStyle() & SWT.FULL_SELECTION) != 0); hideSelectionButton.setSelection((table1.getStyle() & SWT.HIDE_SELECTION) != 0); try { TableColumn column = table1.getColumn(0); moveableColumns.setSelection(column.getMoveable()); resizableColumns.setSelection(column.getResizable()); } catch (IllegalArgumentException ex) { } headerVisibleButton.setSelection(table1.getHeaderVisible()); linesVisibleButton.setSelection(table1.getLinesVisible()); } /** * Sets the header visible state of the "Example" widgets. */ void setWidgetHeaderVisible() { table1.setHeaderVisible(headerVisibleButton.getSelection()); } /** * Sets the sort indicator state of the "Example" widgets. */ void setWidgetSortIndicator() { TableColumn[] columns = table1.getColumns(); if (sortIndicatorButton.getSelection()) { /* Reset to known state: 'down' on column 0. */ table1.setSortDirection(SWT.DOWN); for (int i = 0; i < columns.length; i++) { TableColumn column = columns[i]; if (i == 0) table1.setSortColumn(column); SelectionListener listener = widgetSelectedAdapter(e -> { int sortDirection = SWT.DOWN; if (e.widget == table1.getSortColumn()) { /* If the sort column hasn't changed, cycle down -> up -> none. */ switch (table1.getSortDirection()) { case SWT.DOWN: sortDirection = SWT.UP; break; case SWT.UP: sortDirection = SWT.NONE; break; } } else { table1.setSortColumn((TableColumn) e.widget); } table1.setSortDirection(sortDirection); }); column.addSelectionListener(listener); column.setData("SortListener", listener); //$NON-NLS-1$ } } else { table1.setSortDirection(SWT.NONE); for (TableColumn column : columns) { SelectionListener listener = (SelectionListener) column.getData("SortListener"); //$NON-NLS-1$ if (listener != null) column.removeSelectionListener(listener); } } } /** * Sets the lines visible state of the "Example" widgets. */ void setWidgetLinesVisible() { table1.setLinesVisible(linesVisibleButton.getSelection()); } @Override protected void specialPopupMenuItems(Menu menu, Event event) { MenuItem item = new MenuItem(menu, SWT.PUSH); item.setText("getItem(Point) on mouse coordinates"); menuMouseCoords = table1.toControl(new Point(event.x, event.y)); item.addSelectionListener(widgetSelectedAdapter(e -> { eventConsole .append("getItem(Point(" + menuMouseCoords + ")) returned: " + table1.getItem(menuMouseCoords)); eventConsole.append("\n"); })); } }