Java tutorial
/******************************************************************************* * Copyright (c) 2007-2010 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is 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 * * Contributor: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.hibernate.eclipse.launch; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Map; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.Path; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ILabelProvider; 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.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.osgi.util.NLS; 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.SelectionEvent; 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.DirectoryDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.hibernate.eclipse.console.HibernateConsoleMessages; import org.hibernate.eclipse.console.model.impl.ExporterFactory; import org.hibernate.eclipse.console.model.impl.ExporterProperty; import org.hibernate.eclipse.console.utils.DialogSelectionHelper; import org.hibernate.util.xpl.StringHelper; /** * Add/edit property dialog to configure Hibernate Exporters. */ public class AddPropertyDialog extends TitleAreaDialog { private final ExporterFactory ef; private final String selectedPropertyId; private final boolean flagEdit; private ComboViewer propertyCombo; private Control value; private Button addPathButton; private String propertyName; private String propertyValue; private ModifyListener modifyListener = new ModifyListener() { public void modifyText(ModifyEvent e) { updateStatus(); } }; protected AddPropertyDialog(Shell parentShell, ExporterFactory ef, String selectedPropertyId, boolean flagEdit) { super(parentShell); this.ef = ef; this.selectedPropertyId = selectedPropertyId; this.flagEdit = flagEdit; } protected Control createDialogArea(Composite parent) { String dialogTitle = HibernateConsoleMessages.AddPropertyDialog_add_exporter_property; String editTitle = HibernateConsoleMessages.AddPropertyDialog_add_property_to; if (flagEdit) { dialogTitle = HibernateConsoleMessages.AddPropertyDialog_edit_exporter_property; editTitle = HibernateConsoleMessages.AddPropertyDialog_edit_property_to; } getShell().setText(dialogTitle); setTitle(editTitle + ef.getExporterDefinition().getDescription()); Composite control = (Composite) super.createDialogArea(parent); Composite composite = new Composite(control, SWT.NONE); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); GridLayout layout = new GridLayout(3, false); layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN); layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN); layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING); layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING); composite.setLayout(layout); Label label = new Label(composite, SWT.NONE); label.setText(HibernateConsoleMessages.AddPropertyDialog_name); final Combo combo = new Combo(composite, SWT.BORDER | SWT.DROP_DOWN); GridData pgd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL); pgd.horizontalSpan = 2; combo.setLayoutData(pgd); combo.setFocus(); combo.addModifyListener(modifyListener); propertyCombo = new ComboViewer(combo); combo.addKeyListener(new KeyListener() { public void keyPressed(KeyEvent e) { } public void keyReleased(KeyEvent e) { if (e.keyCode == SWT.ARROW_UP || e.keyCode == SWT.ARROW_DOWN) { //linux doesn't call selectionChanged event on this events propertyCombo.setSelection(propertyCombo.getSelection(), false); return; } for (int i = 0; i < combo.getItemCount(); i++) { if (combo.getText().equals(combo.getItem(i))) { if (combo.getSelectionIndex() != i) { combo.select(i); propertyCombo.setSelection(propertyCombo.getSelection(), false); } return; } } disposeBrowseButton(); createTextValueComposite(2); } }); if (flagEdit) { propertyCombo.getControl().setEnabled(false); } label = new Label(composite, SWT.NONE); label.setText(HibernateConsoleMessages.AddPropertyDialog_value); value = new Text(composite, SWT.BORDER); value.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL)); ((Text) value).addModifyListener(modifyListener); initDefaultNames(ef, propertyCombo); return control; } private void initDefaultNames(ExporterFactory ef2, ComboViewer viewer) { viewer.setContentProvider(new IStructuredContentProvider() { ExporterFactory localEf; public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { localEf = (ExporterFactory) newInput; } public void dispose() { localEf = null; } public Object[] getElements(Object inputElement) { Iterator<Map.Entry<String, ExporterProperty>> set = localEf.getDefaultExporterProperties() .entrySet().iterator(); List<ExporterProperty> values = new ArrayList<ExporterProperty>(4); while (set.hasNext()) { Map.Entry<String, ExporterProperty> element = set.next(); //if(!localEf.hasLocalValueFor((String) element.getKey())) { ExporterProperty exporterProperty = localEf.getExporterProperty(element.getKey()); if (exporterProperty != null) { values.add(exporterProperty); } //} } return values.toArray(new ExporterProperty[values.size()]); } }); viewer.setLabelProvider(new ILabelProvider() { public void removeListener(ILabelProviderListener listener) { } public boolean isLabelProperty(Object element, String property) { return false; } public void dispose() { } public void addListener(ILabelProviderListener listener) { } public String getText(Object element) { ExporterProperty exporterProperty = ((ExporterProperty) element); return exporterProperty.getDescriptionForLabel(); } public Image getImage(Object element) { return null; } }); viewer.addSelectionChangedListener(new ISelectionChangedListener() { private SelectionListener getSelectionListener(ExporterProperty prop) { if (!("path".equals(prop.getType()) || "directory".equals(prop.getType()))) //$NON-NLS-1$//$NON-NLS-2$ return null; final boolean isPath = "path".equals(prop.getType()); //$NON-NLS-1$ return new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } public void widgetSelected(SelectionEvent e) { String title = isPath ? HibernateConsoleMessages.ExporterSettingsTab_select_path : HibernateConsoleMessages.ExporterSettingsTab_select_dir; String description = isPath ? HibernateConsoleMessages.ExporterSettingsTab_select_path2 : HibernateConsoleMessages.ExporterSettingsTab_select_dir2; MessageDialog dialog = new MessageDialog(getShell(), title, null, description, MessageDialog.QUESTION, new String[] { HibernateConsoleMessages.CodeGenerationSettingsTab_filesystem, HibernateConsoleMessages.CodeGenerationSettingsTab_workspace, IDialogConstants.CANCEL_LABEL }, 1); int answer = dialog.open(); String strPath = null; if (answer == 0) { // filesystem DirectoryDialog dialog2 = new DirectoryDialog(getShell()); dialog2.setText(title); dialog2.setMessage(description); String dir = dialog2.open(); if (dir != null) { strPath = dir; } } else if (answer == 1) { // workspace IPath[] paths = DialogSelectionHelper.chooseFileEntries(getShell(), (IPath) null, new Path[0], title, description, new String[0], isPath, true, false); if (paths != null && paths.length > 0) { strPath = paths[0].toOSString(); if (isPath) { for (int i = 1; i < paths.length; i++) { strPath += ';' + paths[i].toOSString(); } } } } else return; String oldPath = ((Text) value).getText(); if (isPath && oldPath.trim().length() > 0 && strPath != null) ((Text) value).setText(oldPath + ';' + strPath); else { if (strPath != null) ((Text) value).setText(strPath); } } }; } public void selectionChanged(SelectionChangedEvent event) { if (value == null) return; IStructuredSelection iss = (IStructuredSelection) event.getSelection(); if (!iss.isEmpty()) { ExporterProperty prop = (ExporterProperty) iss.getFirstElement(); if ("boolean".equalsIgnoreCase(prop.getType())) { //$NON-NLS-1$ disposeBrowseButton(); createComboValueComposite(new String[] { String.valueOf(true), String.valueOf(false) }); ((Combo) value).select( Boolean.valueOf(ef.getPropertyValue(prop.getName())).booleanValue() ? 0 : 1); } else if ("directory".equalsIgnoreCase(prop.getType())//$NON-NLS-1$ || "path".equalsIgnoreCase(prop.getType())) { //$NON-NLS-1$ disposeBrowseButton(); createTextValueComposite(1); ((Text) value).setText(ef.getPropertyValue(prop.getName())); createBrowseButton(getSelectionListener(prop), prop); } else { disposeBrowseButton(); createTextValueComposite(2); ((Text) value).setText(ef.getPropertyValue(prop.getName())); } } else { createTextValueComposite(2); } } }); viewer.setInput(ef); if (viewer.getCombo().getItemCount() > 0) { Object selected = null; if (selectedPropertyId != null) { selected = ef.getExporterProperty(selectedPropertyId); } else { selected = viewer.getElementAt(0); } viewer.setSelection(new StructuredSelection(selected)); viewer.getCombo().select(viewer.getCombo().getSelectionIndex()); } } private void disposeBrowseButton() { if (addPathButton != null) { Composite parent = addPathButton.getParent(); addPathButton.dispose(); addPathButton = null; parent.layout(); } } private void createBrowseButton(SelectionListener listener, ExporterProperty prop) { disposeBrowseButton(); addPathButton = new Button(value.getParent(), SWT.PUSH); if ("path".equals(prop.getType())) { //$NON-NLS-1$ addPathButton.setText(HibernateConsoleMessages.AddPropertyDialog_add_path); } else { addPathButton.setText(HibernateConsoleMessages.AddPropertyDialog_browse); } addPathButton.setLayoutData(new GridData(GridData.END)); addPathButton.addSelectionListener(listener); value.getParent().layout(); } private void createTextValueComposite(int span) { if (!(value instanceof Text)) { Composite parent = value.getParent(); if (value != null) { value.dispose(); } value = new Text(parent, SWT.BORDER | SWT.LEAD | SWT.DROP_DOWN); ((Text) value).addModifyListener(modifyListener); GridData vgd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL); vgd.horizontalSpan = span; value.setLayoutData(vgd); } else { ((GridData) value.getLayoutData()).horizontalSpan = span; ((Text) value).setText(""); //$NON-NLS-1$ } value.getParent().layout(); } private void createComboValueComposite(String[] items) { if (!(value instanceof Combo)) { Composite parent = value.getParent(); if (value != null) { value.dispose(); } value = new Combo(parent, SWT.BORDER | SWT.LEAD | SWT.DROP_DOWN | SWT.READ_ONLY); GridData bgd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL); bgd.horizontalSpan = 2; value.setLayoutData(bgd); ((Combo) value).setItems(items); ((Combo) value).addModifyListener(modifyListener); if (items != null && items.length > 0) { ((Combo) value).select(0); } parent.layout(); } } void updateStatus() { getEnteredValues(); boolean ok = false; if (StringHelper.isEmpty(getPropertyName())) { setMessage(HibernateConsoleMessages.AddPropertyDialog_the_property_name_must_be_chosen_or_entered, IMessageProvider.ERROR); } else if (getPropertyName().indexOf(' ') >= 0 || getPropertyName().indexOf('\t') >= 0) { setMessage(HibernateConsoleMessages.AddPropertyDialog_the_property_name_may_not_contain_whitespaces, IMessageProvider.ERROR); } else if (StringHelper.isEmpty(getPropertyValue())) { setMessage(HibernateConsoleMessages.AddPropertyDialog_the_property_value_must_be_non_empty, IMessageProvider.ERROR); } else { if (!flagEdit && ef.hasLocalValueFor(getPropertyName())) { String out = NLS.bind(HibernateConsoleMessages.AddPropertyDialog_the_property_is_already_set, getPropertyName()); setMessage(out, IMessageProvider.WARNING); } else { setMessage(null, IMessageProvider.ERROR); } ok = true; } Button button = getButton(IDialogConstants.OK_ID); if (button != null) { button.setEnabled(ok); } } public String getPropertyValue() { return propertyValue; } public String getPropertyName() { return propertyName; } void getEnteredValues() { if (propertyCombo == null) { propertyName = null; } else { IStructuredSelection selection = (IStructuredSelection) propertyCombo.getSelection(); if (selection.isEmpty()) { propertyName = propertyCombo.getCombo().getText(); } else { ExporterProperty p = (ExporterProperty) selection.getFirstElement(); propertyName = p.getName(); } } if (value != null) { if (value instanceof Text) { propertyValue = ((Text) value).getText(); } else if (value instanceof Combo) { propertyValue = ((Combo) value).getText(); } } else { propertyValue = null; } } protected void okPressed() { getEnteredValues(); super.okPressed(); } public void create() { super.create(); updateStatus(); } }