Java tutorial
/******************************************************************************* * Copyright (c) 2014 Rohde & Schwarz GmbH & Co. KG and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Martin Runge - initial implementation of cmake support *******************************************************************************/ package org.eclipse.cdt.cmake.ui; import org.eclipse.cdt.cmake.var.ArchToolchainPair; import org.eclipse.cdt.cmake.var.ArchToolchainPairList; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.preference.FieldEditor; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Widget; import org.eclipse.ui.PlatformUI; /** * @author runge_m * */ public class ArchTable extends FieldEditor { private TableViewer tableViewer; private Composite tableParent; private ArchToolchainPairList atlist; /** * The button box containing the Add and Remove buttons; * <code>null</code> if none (before creation or after disposal). */ private Composite buttonBox; private Button addButton; private Button removeButton; private SelectionListener selectionListener; public ArchTable(String name, String labelText, Composite parent) { init(name, labelText); createControl(parent); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#adjustForNumColumns(int) */ @Override protected void adjustForNumColumns(int numColumns) { Control labelCcontrol = getLabelControl(); ((GridData) labelCcontrol.getLayoutData()).horizontalSpan = numColumns; ((GridData) getTableControl().getLayoutData()).horizontalSpan = numColumns - 1; } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#doFillIntoGrid(org.eclipse.swt.widgets.Composite, int) */ @Override protected void doFillIntoGrid(Composite parent, int numColumns) { // doFillLabelIntoGrid(parent, numColumns); doFillBoxIntoGrid(parent, numColumns); } protected void doFillLabelIntoGrid(Composite parent, int numColumns) { String text = getLabelText(); if (text != null && text.length() > 0) { Control control = getLabelControl(parent); GridData gd = new GridData(); gd.horizontalSpan = numColumns; control.setLayoutData(gd); } } protected void doFillBoxIntoGrid(Composite parent, int numColumns) { Control control = getLabelControl(parent); GridData gd = new GridData(); gd.horizontalSpan = numColumns; control.setLayoutData(gd); Control table = createTableControl(parent); gd = new GridData(GridData.FILL_HORIZONTAL); gd.verticalAlignment = GridData.FILL; gd.horizontalSpan = numColumns - 1; gd.grabExcessHorizontalSpace = true; table.setLayoutData(gd); buttonBox = getButtonBoxControl(parent); gd = new GridData(); gd.verticalAlignment = GridData.BEGINNING; buttonBox.setLayoutData(gd); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#doLoad() */ @Override protected void doLoad() { if (atlist == null) { atlist = new ArchToolchainPairList(); } atlist.doLoad(); tableViewer.setInput(atlist); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#doLoadDefault() */ @Override protected void doLoadDefault() { if (atlist == null) { atlist = new ArchToolchainPairList(); } atlist.doLoad(true); tableViewer.setInput(atlist); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#doStore() */ @Override protected void doStore() { if (atlist == null) return; atlist.doStore(); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#getNumberOfControls() */ @Override public int getNumberOfControls() { return 3; } @Override protected void createControl(Composite parent) { GridLayout ly = (GridLayout) parent.getLayout(); doFillIntoGrid(parent, getNumberOfControls()); } public Table createTableControl(Composite parent) { Table table = getTableControl(); if (table == null) { tableParent = parent; tableViewer = new TableViewer(parent, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.FULL_SELECTION); createColumns(tableViewer); table = tableViewer.getTable(); table.setHeaderVisible(true); table.setLinesVisible(true); table.setFont(parent.getFont()); tableViewer.setComparator(new ViewerComparator()); tableViewer.setContentProvider(ArrayContentProvider.getInstance()); // tableViewer.setInput( atlist ); } else { checkParent(table, parent); } return table; } /** * @param tableViewer */ private void createColumns(TableViewer tv) { // create a column for the architecture's name TableViewerColumn colArchName = new TableViewerColumn(tv, SWT.NONE); colArchName.getColumn().setWidth(200); colArchName.getColumn().setText("Architecture"); colArchName.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { ArchToolchainPair p = (ArchToolchainPair) element; return p.getArchName(); } }); colArchName.setEditingSupport(new ArchCellEditor(tableViewer)); // create a column for the architecture's name TableViewerColumn colToolchainFile = new TableViewerColumn(tv, SWT.NONE); colToolchainFile.getColumn().setWidth(200); colToolchainFile.getColumn().setText("CMake toolchain file"); colToolchainFile.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { ArchToolchainPair p = (ArchToolchainPair) element; return p.getToolchainFile(); } }); } /** * @return */ private Table getTableControl() { if (tableViewer != null) { return tableViewer.getTable(); } else { return null; } } /** * Returns this field editor's button box containing the Add, Remove, * Up, and Down button. * * @param parent the parent control * @return the button box */ public Composite getButtonBoxControl(Composite parent) { if (buttonBox == null) { buttonBox = new Composite(parent, SWT.NULL); GridLayout layout = new GridLayout(); layout.marginWidth = 0; buttonBox.setLayout(layout); addButton = createPushButton(buttonBox, Messages.ArchTableEditor_Add);//$NON-NLS-1$ removeButton = createPushButton(buttonBox, Messages.ArchTableEditor_Remove);//$NON-NLS-1$ buttonBox.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent event) { addButton = null; removeButton = null; buttonBox = null; } }); } else { checkParent(buttonBox, parent); } selectionChanged(); return buttonBox; } /** * Helper method to create a push button. * * @param parent the parent control * @param key the resource name used to supply the button's label text * @return Button */ private Button createPushButton(Composite parent, String key) { Button button = new Button(parent, SWT.PUSH); button.setText(JFaceResources.getString(key)); button.setFont(parent.getFont()); GridData data = new GridData(GridData.FILL_HORIZONTAL); int widthHint = convertHorizontalDLUsToPixels(button, IDialogConstants.BUTTON_WIDTH); data.widthHint = Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x); button.setLayoutData(data); button.addSelectionListener(getSelectionListener()); return button; } /** * Creates a selection listener. */ public void createSelectionListener() { selectionListener = new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { Widget widget = event.widget; if (widget == addButton) { addPressed(); } else if (widget == removeButton) { removePressed(); } else if (widget == getTableControl()) { selectionChanged(); } } }; } /** * */ protected void selectionChanged() { } private void addPressed() { ArchToolchainPairEditor ed = new ArchToolchainPairEditor( PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell()); int rc = ed.open(); if (rc == Window.OK) { atlist.add(ed.getPair()); tableViewer.refresh(); } } private void removePressed() { Table table = getTableControl(); // table.remove(table.getSelectionIndices()); int[] sel = table.getSelectionIndices(); for (int i = 0; i < sel.length; i++) { // #i have already been removed by earlier runs, remove i from index atlist.remove(sel[i] - i); } tableViewer.refresh(); } /** * Returns this field editor's selection listener. * The listener is created if nessessary. * * @return the selection listener */ private SelectionListener getSelectionListener() { if (selectionListener == null) { createSelectionListener(); } return selectionListener; } }