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.detailtabs.sections.composites; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ComboBoxCellEditor; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Text; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import com.amalto.workbench.detailtabs.sections.BasePropertySection; import com.amalto.workbench.detailtabs.sections.model.annotationinfo.langinfo.LanguageInfo; import com.amalto.workbench.detailtabs.sections.providers.LanguageInfoLabelProvider; import com.amalto.workbench.detailtabs.sections.providers.LanguageInfoModifier; import com.amalto.workbench.detailtabs.sections.providers.LanguageInfoSorter; import com.amalto.workbench.i18n.Messages; import com.amalto.workbench.image.EImage; import com.amalto.workbench.image.ImageCache; import com.amalto.workbench.providers.ListContentProvider; import com.amalto.workbench.utils.Util; public class LanguageInfoComposite extends Composite { private final List<String> allLanguages; private TreeViewer tvInfos; private Text txtLabel; private Button btnAdd; private Button btnRemove; private Combo comboLanguage; private List<LanguageInfo> infos = new ArrayList<LanguageInfo>(); protected BasePropertySection section; public LanguageInfoComposite(Composite parent, int style, BasePropertySection section) { super(parent, style); this.section = section; allLanguages = Arrays.asList(Util.lang2iso.keySet().toArray(new String[0])); final GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 4; setLayout(gridLayout); comboLanguage = new Combo(this, SWT.READ_ONLY | SWT.DROP_DOWN | SWT.SINGLE); final GridData gd_comboLanguage = new GridData(); gd_comboLanguage.widthHint = 120; comboLanguage.setLayoutData(gd_comboLanguage); txtLabel = new Text(this, SWT.BORDER); final GridData gd_txtLabel = new GridData(SWT.FILL, SWT.CENTER, true, false); txtLabel.setLayoutData(gd_txtLabel); btnAdd = new Button(this, SWT.NONE); btnAdd.setImage(ImageCache.getCreatedImage(EImage.ADD_OBJ.getPath())); btnAdd.setToolTipText(Messages.Add); tvInfos = new TreeViewer(this, SWT.BORDER | SWT.FULL_SELECTION); Tree tree = tvInfos.getTree(); tree.setHeaderVisible(true); tree.setLinesVisible(true); final GridData gd_tree = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1); gd_tree.heightHint = 80; tree.setLayoutData(gd_tree); final TreeColumn colLanguage = new TreeColumn(tree, SWT.NONE); colLanguage.setWidth(120); colLanguage.setText(Messages.LanguageInfoComposite_); final TreeColumn colLabel = new TreeColumn(tree, SWT.NONE); colLabel.setWidth(242); colLabel.setText(Messages.LanguageInfoComposite_Label); btnRemove = new Button(this, SWT.NONE); final GridData gd_btnRemove = new GridData(SWT.LEFT, SWT.TOP, false, false); btnRemove.setLayoutData(gd_btnRemove); btnRemove.setImage(ImageCache.getCreatedImage(EImage.DELETE_OBJ.getPath())); btnRemove.setToolTipText(Messages.LanguageInfoComposite_Del); // tvInfos.setContentProvider(new ListContentProvider()); tvInfos.setLabelProvider(new LanguageInfoLabelProvider()); tvInfos.setSorter(new LanguageInfoSorter()); initUIListeners(); } public void setLanguageInfos(LanguageInfo[] initLanguageInfos) { initUIContent(initLanguageInfos); tvInfos.refresh(); } public LanguageInfo[] getLanguageInfos() { return infos.toArray(new LanguageInfo[0]); } private void initUIContent(LanguageInfo[] initLanguageInfos) { initLanguageCombo(); initLanguageInfos(initLanguageInfos); } private void initLanguageCombo() { comboLanguage.removeAll(); for (String eachLanguage : allLanguages) comboLanguage.add(eachLanguage); comboLanguage.select(0); } private void initLanguageInfos(LanguageInfo[] initLanguageInfos) { infos.clear(); for (LanguageInfo eachLanguageInfo : initLanguageInfos) { infos.add(eachLanguageInfo); } tvInfos.setInput(infos); } private void initUIListeners() { initUIListenerOfLabelText(); initUIListenerOfAddButton(); initUIListenerOfAddRemove(); initUIListenerOfLangInfoTree(); } private void initUIListenerOfLabelText() { txtLabel.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { onMidifyLabelText(); } }); } private void initUIListenerOfLangInfoTree() { tvInfos.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { onSelectLanguageInfoFrTree(); } }); tvInfos.setColumnProperties( new String[] { LanguageInfoModifier.COL_PROP_LANG, LanguageInfoModifier.COL_PROP_LABLE }); tvInfos.setCellEditors( new CellEditor[] { new ComboBoxCellEditor(tvInfos.getTree(), allLanguages.toArray(new String[0])), new TextCellEditor(tvInfos.getTree()) }); LanguageInfoModifier modifier = new LanguageInfoModifier(tvInfos, infos, allLanguages, section); tvInfos.setCellModifier(modifier); } private void initUIListenerOfAddRemove() { btnRemove.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { onRemoveLanguageInfo(); } }); } private void initUIListenerOfAddButton() { btnAdd.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { onAddLanguageInfo(); } }); } private void onSelectLanguageInfoFrTree() { if (!isLanguageInfoSelected()) return; LanguageInfo selectedLangInfo = getSelectedLanguageInfo(); comboLanguage.select(allLanguages.indexOf(selectedLangInfo.getLanguage())); txtLabel.setText(selectedLangInfo.getLabel()); } private void onMidifyLabelText() { LanguageInfo correspondLangInfo = getLangInfoBySelectionOfLangCombo(); if (correspondLangInfo == null) return; if (correspondLangInfo.getLabel().equals(txtLabel.getText().trim())) return; if ("".equals(txtLabel.getText().trim())) { //$NON-NLS-1$ MessageDialog.openWarning(getShell(), Messages.Warning, Messages.LanguageInfoComposite_InfoCannotbeEmpty); txtLabel.setText(correspondLangInfo.getLabel()); } correspondLangInfo.setLabel(txtLabel.getText().trim()); tvInfos.refresh(); if (section != null) section.autoCommit(); } private void onAddLanguageInfo() { if ("".equals(txtLabel.getText().trim())) { //$NON-NLS-1$ MessageDialog.openWarning(getShell(), Messages.Warning, Messages.LanguageInfoComposite_InfoCannotbeEmpty); return; } LanguageInfo correspondLangInfo = getLangInfoBySelectionOfLangCombo(); if (correspondLangInfo == null) { LanguageInfo newLangInfo = new LanguageInfo(comboLanguage.getText(), Util.lang2iso.get(comboLanguage.getText()), txtLabel.getText().trim()); infos.add(newLangInfo); } else { correspondLangInfo.setLabel(txtLabel.getText().trim()); } tvInfos.refresh(); if (section != null) section.autoCommit(); } private void onRemoveLanguageInfo() { infos.remove(getSelectedLanguageInfo()); tvInfos.refresh(); if (section != null) section.autoCommit(); } private LanguageInfo getLangInfoBySelectionOfLangCombo() { for (LanguageInfo eachCurLanguageInfo : infos) { if (eachCurLanguageInfo.getLanguage().equals(comboLanguage.getText())) { return eachCurLanguageInfo; } } return null; } private LanguageInfo getSelectedLanguageInfo() { if (tvInfos.getSelection() == null || tvInfos.getSelection().isEmpty()) return null; Object selectedObj = ((IStructuredSelection) tvInfos.getSelection()).getFirstElement(); if (selectedObj instanceof LanguageInfo) return (LanguageInfo) selectedObj; return null; } private boolean isLanguageInfoSelected() { return (getSelectedLanguageInfo() != null); } }