Java tutorial
// ============================================================================ // // Copyright (C) 2006-2017 Talend Inc. - www.talend.com // // This source code is available under agreement available at // %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt // // You should have received a copy of the agreement // along with this program; if not, write to Talend SA // 9 rue Pages 92150 Suresnes, France // // ============================================================================ package com.amalto.workbench.dialogs; import java.util.ArrayList; import java.util.Arrays; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.Set; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ComboBoxCellEditor; import org.eclipse.jface.viewers.ICellModifier; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Text; import com.amalto.workbench.i18n.Messages; import com.amalto.workbench.image.EImage; import com.amalto.workbench.image.ImageCache; import com.amalto.workbench.utils.Util; public class AnnotationLanguageLabelsDialog extends Dialog { protected Text labelText; protected Combo languagesCombo; protected TableViewer descriptionsViewer; protected LinkedHashMap<String, String> descriptionsMap = new LinkedHashMap<String, String>(); private SelectionListener caller = null; private String title = "";//$NON-NLS-1$ /** * @param parentShell */ public AnnotationLanguageLabelsDialog(LinkedHashMap<String, String> descriptionsMap, SelectionListener caller, Shell parentShell, String title) { super(parentShell); if (descriptionsMap != null) { this.descriptionsMap = descriptionsMap; } this.caller = caller; this.title = title; } protected Control createDialogArea(Composite parent) { // Should not really be here but well,.... parent.getShell().setText(this.title); Composite composite = (Composite) super.createDialogArea(parent); GridLayout layout = (GridLayout) composite.getLayout(); layout.numColumns = 3; // layout.verticalSpacing = 10; languagesCombo = new Combo(composite, SWT.READ_ONLY | SWT.DROP_DOWN | SWT.SINGLE); languagesCombo.setLayoutData(new GridData(SWT.BEGINNING, SWT.NONE, false, false, 1, 1)); Set<String> languages = Util.lang2iso.keySet(); for (Iterator iter = languages.iterator(); iter.hasNext();) { String language = (String) iter.next(); languagesCombo.add(language); } languagesCombo.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { } }); languagesCombo.select(0); labelText = new Text(composite, SWT.BORDER | SWT.SINGLE); labelText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1)); ((GridData) labelText.getLayoutData()).minimumWidth = 150; labelText.addKeyListener(new KeyListener() { public void keyPressed(KeyEvent e) { } public void keyReleased(KeyEvent e) { if ((e.stateMask == 0) && (e.character == SWT.CR)) { String isoCode = Util.lang2iso.get(languagesCombo.getText()); descriptionsMap.put(isoCode, labelText.getText()); descriptionsViewer.refresh(); } } }); Button addLabelButton = new Button(composite, SWT.PUSH); addLabelButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, true, 1, 1)); addLabelButton.setImage(ImageCache.getCreatedImage(EImage.ADD_OBJ.getPath())); addLabelButton.setToolTipText(Messages.AnnotationLanguageLabelsDialog_Add); addLabelButton.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent e) { }; public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) { String code = Util.lang2iso.get(languagesCombo.getText()); descriptionsMap.put(code, labelText.getText()); descriptionsViewer.refresh(); }; }); final String LANGUAGE = Messages.AnnotationLanguageLabelsDialog_Language; final String LABEL = Messages.AnnotationLanguageLabelsDialog_Label; descriptionsViewer = new TableViewer(composite, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER | SWT.FULL_SELECTION); descriptionsViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1)); ((GridData) descriptionsViewer.getControl().getLayoutData()).heightHint = 100; // Set up the underlying table Table table = descriptionsViewer.getTable(); // table.setLayoutData(new GridData(GridData.FILL_BOTH)); new TableColumn(table, SWT.LEFT).setText(LANGUAGE); new TableColumn(table, SWT.CENTER).setText(LABEL); table.getColumn(0).setWidth(150); table.getColumn(1).setWidth(150); for (int i = 2, n = table.getColumnCount(); i < n; i++) { table.getColumn(i).pack(); } table.setHeaderVisible(true); table.setLinesVisible(true); Button delLabelButton = new Button(composite, SWT.PUSH); delLabelButton.setLayoutData(new GridData(SWT.NONE, SWT.NONE, false, false, 1, 1)); delLabelButton.setImage(ImageCache.getCreatedImage(EImage.DELETE_OBJ.getPath())); delLabelButton.setToolTipText(Messages.AnnotationLanguageLabelsDialog_Del); delLabelButton.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent e) { }; public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) { deleteItem(); }; }); // Create the cell editors --> We actually discard those later: not natural for an user CellEditor[] editors = new CellEditor[2]; editors[0] = new ComboBoxCellEditor(table, Util.lang2iso.keySet().toArray(new String[] {}), SWT.READ_ONLY); editors[1] = new TextCellEditor(table); descriptionsViewer.setCellEditors(editors); // set the content provider descriptionsViewer.setContentProvider(new IStructuredContentProvider() { public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public Object[] getElements(Object inputElement) { // System.out.println("getElements() "); LinkedHashMap<String, String> descs = (LinkedHashMap<String, String>) inputElement; Set<String> languages = descs.keySet(); ArrayList<DescriptionLine> lines = new ArrayList<DescriptionLine>(); for (Iterator iter = languages.iterator(); iter.hasNext();) { String language = ((String) iter.next()); DescriptionLine line = new DescriptionLine(Util.iso2lang.get(language), descs.get(language)); lines.add(line); } // we return an instance line made of a Sring and a boolean return lines.toArray(new DescriptionLine[lines.size()]); } }); // set the label provider descriptionsViewer.setLabelProvider(new ITableLabelProvider() { public boolean isLabelProperty(Object element, String property) { return false; } public void dispose() { } public void addListener(ILabelProviderListener listener) { } public void removeListener(ILabelProviderListener listener) { } public String getColumnText(Object element, int columnIndex) { // System.out.println("getColumnText() "+columnIndex); DescriptionLine line = (DescriptionLine) element; switch (columnIndex) { case 0: return line.getLanguage(); case 1: return line.getLabel(); } return "";//$NON-NLS-1$ } public Image getColumnImage(Object element, int columnIndex) { return null; } }); // Set the column properties descriptionsViewer.setColumnProperties(new String[] { LANGUAGE, LABEL }); // set the Cell Modifier descriptionsViewer.setCellModifier(new ICellModifier() { public boolean canModify(Object element, String property) { // if (INSTANCE_ACCESS.equals(property)) return true; Deactivated return true; } public void modify(Object element, String property, Object value) { TableItem item = (TableItem) element; int columnIndex = Arrays.asList(descriptionsViewer.getColumnProperties()).indexOf(property); DescriptionLine line = (DescriptionLine) item.getData(); if (columnIndex == 0) { String[] attrs = Util.lang2iso.keySet().toArray(new String[] {}); int orgIndx = Arrays.asList(attrs).indexOf(line.getLanguage()); if (orgIndx != Integer.parseInt(value.toString())) { String newLang = attrs[Integer.parseInt(value.toString())]; if (descriptionsMap.containsKey(Util.lang2iso.get(newLang))) { MessageDialog.openInformation(null, Messages.Warnning, Messages.AnnotationLanguageLabelsDialog_InforContent); return; } descriptionsMap.remove(Util.lang2iso.get(line.getLanguage())); line.setLanguage(newLang); descriptionsMap.put(Util.lang2iso.get(newLang), line.getLabel()); } } else // column label { line.setLabel(value.toString()); descriptionsMap.put(Util.lang2iso.get(line.getLanguage()), line.getLabel()); } descriptionsViewer.update(line, null); } public Object getValue(Object element, String property) { int columnIndex = Arrays.asList(descriptionsViewer.getColumnProperties()).indexOf(property); DescriptionLine line = (DescriptionLine) element; if (columnIndex == 0) { String[] attrs = Util.lang2iso.keySet().toArray(new String[] {}); return Arrays.asList(attrs).indexOf(line.getLanguage()); } else { if (LANGUAGE.equals(property)) { return line.getLanguage(); } if (LABEL.equals(property)) { return line.getLabel(); } } return null; } }); // Listen for changes in the selection of the viewer to display additional parameters descriptionsViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { } }); // display for Delete Key events to delete an instance descriptionsViewer.getTable().addKeyListener(new KeyListener() { public void keyPressed(KeyEvent e) { } public void keyReleased(KeyEvent e) { // System.out.println("Table keyReleased() "); if ((e.stateMask == 0) && (e.character == SWT.DEL) && (descriptionsViewer.getSelection() != null)) { deleteItem(); } } }); descriptionsViewer.setInput(descriptionsMap); descriptionsViewer.refresh(); labelText.setFocus(); return composite; } private void deleteItem() { DescriptionLine line = (DescriptionLine) ((IStructuredSelection) descriptionsViewer.getSelection()) .getFirstElement(); String isoCode = Util.lang2iso.get(line.getLanguage()); LinkedHashMap<String, String> descs = (LinkedHashMap<String, String>) descriptionsViewer.getInput(); descs.remove(isoCode); descriptionsViewer.refresh(); } protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); if (caller != null) { getButton(IDialogConstants.OK_ID).addSelectionListener(this.caller); getButton(IDialogConstants.CANCEL_ID).addSelectionListener(this.caller); } } @Override protected void okPressed() { setReturnCode(OK); getButton(IDialogConstants.OK_ID).setData("dialog", AnnotationLanguageLabelsDialog.this);//$NON-NLS-1$ // no close let Action Handler handle it if (caller == null) { close(); } } @Override protected void cancelPressed() { setReturnCode(CANCEL); getButton(IDialogConstants.CANCEL_ID).setData("dialog", AnnotationLanguageLabelsDialog.this);//$NON-NLS-1$ // no close let Action Handler handle it if (caller == null) { close(); } } /************************************************************************************************** * Public getters read by caller ***************************************************************************************************/ /* * public TableViewer getDescriptionsTableViewer() { return descriptionsViewer; } */ public LinkedHashMap<String, String> getDescriptionsMap() { return descriptionsMap; } /************************************************************************************************** * A table viewer line ***************************************************************************************************/ class DescriptionLine { private String language; private String label; public DescriptionLine(String language, String label) { super(); this.language = language; this.label = label; } public String getLabel() { return label; } public void setLabel(String label) { this.label = label; } public String getLanguage() { return language; } public void setLanguage(String language) { this.language = language; } } }