Java tutorial
/** * This file is protected by Copyright. * Please refer to the COPYRIGHT file distributed with this source distribution. * * This file is part of REDHAWK IDE. * * 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. * */ /******************************************************************************* * Copyright (c) 2000, 2007 IBM Corporation 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: * IBM Corporation - initial API and implementation *******************************************************************************/ package gov.redhawk.ui.parts; import gov.redhawk.ui.util.SWTUtil; import gov.redhawk.ui.wizards.ListUtil; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.StructuredViewer; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.forms.widgets.FormToolkit; /** * The Class WizardCheckboxTablePart. */ public class WizardCheckboxTablePart extends CheckboxTablePart { private int selectAllIndex = -1; private int deselectAllIndex = -1; private final String tableName; private int counter; private Label counterLabel; /** * Constructor for WizardCheckboxTablePart. * * @param buttonLabels the button labels * @param tableName the table name */ public WizardCheckboxTablePart(final String tableName, final String[] buttonLabels) { super(buttonLabels); this.tableName = tableName; } /** * Instantiates a new wizard checkbox table part. * * @param mainLabel the main label */ public WizardCheckboxTablePart(final String mainLabel) { this(mainLabel, new String[] { "&Select All", "D&eselect All" }); setSelectAllIndex(0); setDeselectAllIndex(1); } /** * Sets the select all index. * * @param index the new select all index */ public void setSelectAllIndex(final int index) { this.selectAllIndex = index; } /** * Sets the deselect all index. * * @param index the new deselect all index */ public void setDeselectAllIndex(final int index) { this.deselectAllIndex = index; } /** * {@inheritDoc} */ @Override protected void buttonSelected(final Button button, final int index) { if (index == this.selectAllIndex) { handleSelectAll(true); } if (index == this.deselectAllIndex) { handleSelectAll(false); } } /** * Gets the selection. * * @return the selection */ public Object[] getSelection() { final CheckboxTableViewer viewer = getTableViewer(); return viewer.getCheckedElements(); } /** * Sets the selection. * * @param selected the new selection */ public void setSelection(final Object[] selected) { final CheckboxTableViewer viewer = getTableViewer(); viewer.setCheckedElements(selected); updateCounter(viewer.getCheckedElements().length); } /** * Creates the control. * * @param parent the parent */ public void createControl(final Composite parent) { createControl(parent, 2); } /** * Creates the control. * * @param parent the parent * @param span the span */ public void createControl(final Composite parent, final int span) { createControl(parent, SWT.NULL, span, null); this.counterLabel = new Label(parent, SWT.NULL); final GridData gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = span; this.counterLabel.setLayoutData(gd); updateCounter(0); } /** * {@inheritDoc} */ @Override protected Button createButton(final Composite parent, final String label, final int index, final FormToolkit toolkit) { final Button button = super.createButton(parent, label, index, toolkit); SWTUtil.setButtonDimensionHint(button); return button; } /** * {@inheritDoc} */ @Override protected StructuredViewer createStructuredViewer(final Composite parent, final int style, final FormToolkit toolkit) { final StructuredViewer viewer = super.createStructuredViewer(parent, style, toolkit); viewer.setComparator(ListUtil.NAME_COMPARATOR); return viewer; } /** * {@inheritDoc} */ @Override protected void createMainLabel(final Composite parent, final int span, final FormToolkit toolkit) { if (this.tableName == null) { return; } final Label label = new Label(parent, SWT.NULL); label.setText(this.tableName); final GridData gd = new GridData(); gd.horizontalSpan = span; label.setLayoutData(gd); } /** * Update counter. * * @param amount the amount */ protected void updateCounter(final int amount) { this.counter = amount; updateCounterLabel(); } /** * Update counter label. */ protected void updateCounterLabel() { final String number = "" + getSelectionCount(); //$NON-NLS-1$ final String totalNumber = "" + getTotalCount(); //$NON-NLS-1$ final String message = NLS.bind("{0} of {1} selected.", (new String[] { number, totalNumber })); this.counterLabel.setText(message); } /** * Gets the selection count. * * @return the selection count */ public int getSelectionCount() { return this.counter; } /** * Select all. * * @param select the select */ public void selectAll(final boolean select) { handleSelectAll(select); } /** * Gets the total count. * * @return the total count */ private int getTotalCount() { final CheckboxTableViewer viewer = getTableViewer(); return viewer.getTable().getItemCount(); } /** * Handle select all. * * @param select the select */ protected void handleSelectAll(final boolean select) { final CheckboxTableViewer viewer = getTableViewer(); viewer.setAllChecked(select); int selected; if (!select) { selected = 0; } else { selected = getTotalCount(); } updateCounter(selected); } /** * {@inheritDoc} */ @Override protected void elementChecked(final Object element, final boolean checked) { final int count = getSelectionCount(); updateCounter((checked) ? count + 1 : count - 1); // SUPPRESS CHECKSTYLE AvoidInline } /** * Gets the counter label. * * @return the counter label */ public Label getCounterLabel() { return this.counterLabel; } }