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.widgets.composites; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; 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.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; import org.eclipse.xsd.XSDConcreteComponent; import org.eclipse.xsd.XSDElementDeclaration; import org.eclipse.xsd.XSDParticle; import com.amalto.workbench.dialogs.datamodel.IXPathSelectionFilter; import com.amalto.workbench.dialogs.datamodel.IXPathSelectionFilter.FilterResult; import com.amalto.workbench.i18n.Messages; import com.amalto.workbench.models.infoextractor.IAllDataModelHolder; import com.amalto.workbench.providers.XSDTreeLabelProvider; import com.amalto.workbench.providers.datamodel.SchemaNameFilter; import com.amalto.workbench.providers.datamodel.XPathContentProvider; import com.amalto.workbench.utils.SchemaElementNameFilterDes; public class SelectXPathComposite extends Composite { private TreeViewer tvXPath; private Text txtFilter; private Text txtXPath; private Combo comboDataModels; private IAllDataModelHolder allDataModelHolder; private String defaultSelectedDataModel; private String conceptName; private static String context; private SchemaNameFilter xpathTopElementNameFilter; private boolean isAbsolutePath = false; private IXPathSelectionFilter xpathSelectionFilter; public SelectXPathComposite(Composite parent, int style, IAllDataModelHolder allDataModelHolder, String defaultSelectedDataModel) { this(parent, style, allDataModelHolder, defaultSelectedDataModel, null, false); } public SelectXPathComposite(Composite parent, int style, IAllDataModelHolder allDataModelHolder, String defaultSelectedDataModel, String conceptName) { this(parent, style, allDataModelHolder, defaultSelectedDataModel, conceptName, false); } public SelectXPathComposite(Composite parent, int style, IAllDataModelHolder allDataModelHolder, String defaultSelectedDataModel, String conceptName, boolean isAbsolutePath) { this(parent, style, allDataModelHolder, defaultSelectedDataModel, conceptName, false, null); } public SelectXPathComposite(Composite parent, int style, IAllDataModelHolder allDataModelHolder, String defaultSelectedDataModel, String conceptName, boolean isAbsolutePath, IXPathSelectionFilter filter) { super(parent, style); this.allDataModelHolder = allDataModelHolder; this.defaultSelectedDataModel = defaultSelectedDataModel; this.conceptName = conceptName; this.isAbsolutePath = isAbsolutePath; this.xpathSelectionFilter = filter; final GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 2; setLayout(gridLayout); final Label lblDataModels = new Label(this, SWT.NONE); lblDataModels.setText(Messages.SelectXPathComposite_DataModels); comboDataModels = new Combo(this, SWT.READ_ONLY); comboDataModels.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); final Label lblXPath = new Label(this, SWT.NONE); lblXPath.setText(Messages.SelectXPathComposite_XPath); txtXPath = new Text(this, SWT.READ_ONLY | SWT.BORDER); final GridData gd_txtXPath = new GridData(SWT.FILL, SWT.CENTER, true, false); txtXPath.setLayoutData(gd_txtXPath); final Label lblFilter = new Label(this, SWT.NONE); lblFilter.setText(Messages.SelectXPathComposite_Filters); txtFilter = new Text(this, SWT.BORDER); final GridData gd_txtFilter = new GridData(SWT.FILL, SWT.CENTER, true, false); txtFilter.setLayoutData(gd_txtFilter); tvXPath = new TreeViewer(this, SWT.BORDER); tvXPath.setContentProvider(new XPathContentProvider()); tvXPath.setLabelProvider(new XSDTreeLabelProvider(xpathSelectionFilter)); xpathTopElementNameFilter = new SchemaNameFilter(new SchemaElementNameFilterDes(true, "*")); //$NON-NLS-1$ tvXPath.setFilters(new ViewerFilter[] { xpathTopElementNameFilter }); Tree tree = tvXPath.getTree(); final GridData gd_tree = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1); tree.setLayoutData(gd_tree); // initUIListeners(); initUIContents(); } private void initUIListeners() { initListenerForDataModelCombo(); initListenerForFilterTextBox(); initListenerForXPathTree(); } private void initUIContents() { initDataModelComboContents(); initXPathTreeContents(); initFilterText(); } private void initFilterText() { if (conceptName != null) { txtFilter.setText(conceptName); } } private void initDataModelComboContents() { List<String> allCurDataModels = Arrays.asList(allDataModelHolder.getAllDataModelNames()); comboDataModels.setItems(allCurDataModels.toArray(new String[0])); if (allCurDataModels.size() > 0) { comboDataModels.select(0); } if (allCurDataModels.contains(defaultSelectedDataModel)) { comboDataModels.select(allCurDataModels.indexOf(defaultSelectedDataModel)); } } private void initXPathTreeContents() { tvXPath.setInput(allDataModelHolder.getDataModel(comboDataModels.getText().trim())); } private void initListenerForDataModelCombo() { comboDataModels.addMouseListener(new MouseAdapter() { @Override public void mouseDown(MouseEvent e) { String old = comboDataModels.getText().trim(); String[] allModels = allDataModelHolder.getAllDataModelNames(); comboDataModels.setItems(allModels); if (Arrays.asList(allModels).contains(old)) { comboDataModels.setText(old); } } }); comboDataModels.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { txtXPath.setText("");//$NON-NLS-1$ tvXPath.setInput(allDataModelHolder.getDataModel(comboDataModels.getText().trim())); } }); } private void initListenerForFilterTextBox() { txtFilter.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { xpathTopElementNameFilter .setNameFilterDes(new SchemaElementNameFilterDes(true, getFilterExpression())); tvXPath.refresh(); } }); } private void initListenerForXPathTree() { ISelectionChangedListener listener = new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { txtXPath.setText(getXpath()); IStructuredSelection sel = (IStructuredSelection) event.getSelection(); boolean enable = true; if (xpathSelectionFilter != null) { enable = xpathSelectionFilter.check(sel.getFirstElement()) == FilterResult.ENABLE; } if (propertyListener != null) { propertyListener .propertyChange(new PropertyChangeEvent(event.getSource(), "selection", null, enable)); //$NON-NLS-1$ } } }; addSelectionChangedListener(listener); } List<ISelectionChangedListener> selectionChangedListeners = new ArrayList<ISelectionChangedListener>(); private PropertyChangeListener propertyListener; public void addSelectionChangedListener(ISelectionChangedListener listener) { selectionChangedListeners.add(listener); tvXPath.addSelectionChangedListener(listener); } @Override public void dispose() { for (ISelectionChangedListener listner : selectionChangedListeners) { tvXPath.removeSelectionChangedListener(listner); } selectionChangedListeners.clear(); super.dispose(); } public String getSelectedXPath() { return txtXPath.getText().trim(); } private String getFilterExpression() { String starFlag = "*"; //$NON-NLS-1$ String filterText = txtFilter.getText().trim(); if (filterText.isEmpty()) { return starFlag; } return filterText + starFlag; } private String getXpath() { String path = "";//$NON-NLS-1$ String totalXpath = "";//$NON-NLS-1$ TreeItem item; TreeItem[] items = tvXPath.getTree().getSelection(); for (int i = 0; i < items.length; i++) { item = items[i]; XSDConcreteComponent component = (XSDConcreteComponent) item.getData(); if (!(component instanceof XSDParticle) && !(component instanceof XSDElementDeclaration)) { continue; } do { component = (XSDConcreteComponent) item.getData(); if (component instanceof XSDParticle) { if (((XSDParticle) component).getTerm() instanceof XSDElementDeclaration) { path = "/" + ((XSDElementDeclaration) ((XSDParticle) component).getTerm()).getName() + path;//$NON-NLS-1$ } } else if (component instanceof XSDElementDeclaration) { path = (isAbsolutePath ? "/" : "") + ((XSDElementDeclaration) component).getName() + path;//$NON-NLS-1$//$NON-NLS-2$ } item = item.getParentItem(); } while (item != null); if (i == 0) { totalXpath = path; } else { totalXpath += "&" + path;//$NON-NLS-1$ } path = "";//$NON-NLS-1$ } // for(i=0 if (context != null && conceptName != null) { if (totalXpath.equals(conceptName)) { totalXpath = totalXpath.replaceAll(conceptName, "/");//$NON-NLS-1$ } else { totalXpath = totalXpath.replaceAll(conceptName + "/", "");//$NON-NLS-1$//$NON-NLS-2$ } if (totalXpath.equals(context) || totalXpath.equals(context.replaceAll(conceptName + "/", ""))) {//$NON-NLS-1$//$NON-NLS-2$ totalXpath = ".";//$NON-NLS-1$ } if (totalXpath.indexOf('/') == -1 && !totalXpath.equals(".") && !"/".equals(totalXpath) //$NON-NLS-1$//$NON-NLS-2$ && !"/".equals(context)//$NON-NLS-1$ && !context.equals(conceptName)) { totalXpath = "../" + totalXpath;//$NON-NLS-1$ } } return totalXpath; } public String getConceptName() { return conceptName; } public void lockCombo(boolean lock) { comboDataModels.setEnabled(!lock); } public void setConceptName(String conceptName) { this.conceptName = conceptName; } public static String getContext() { return context; } public static void setContext(String c) { context = c; } public void setPropertyChangeListener(PropertyChangeListener propertyListener) { this.propertyListener = propertyListener; } }