Java tutorial
/******************************************************************************* * Copyright (c) 2006 Sybase, Inc. 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: * Sybase, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.jst.jsf.common.ui.internal.dialogfield; import java.util.ArrayList; import java.util.List; import java.util.ResourceBundle; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.ui.IJavaElementSearchConstants; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.jst.jsf.common.ui.JSFUICommonPlugin; import org.eclipse.jst.jsf.common.ui.internal.guiutils.Alerts; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.dialogs.SelectionDialog; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; /** * @author mengbo * @version 1.5 */ /*package*/ abstract class AbstractClassButtonDialogField extends StringButtonDialogField { private IProject _project; private String _superClass; private List _interfacesList; private IType _type; private int _typeFlag = IJavaElementSearchConstants.CONSIDER_ALL_TYPES; private boolean _autoOpenResource = true; /** * @param autoOpenResource */ public void setAutoOpenResource(boolean autoOpenResource) { _autoOpenResource = autoOpenResource; } /** * @param project */ public AbstractClassButtonDialogField(IProject project) { super(null); this._project = project; setHyperLink(new HyperlinkAdapter() { public void linkActivated(HyperlinkEvent e) { activeLink(); } }); setStringButtonAdapter(new IStringButtonAdapter() { public void changeControlPressed(DialogField field) { browseButtonPressed(); } }); } private void activeLink() { String className = getText(); className = trimNonAlphaChars(className); if (className.length() > 0 && JavaUIHelper.doesClassExist(_project, className)) { JavaUIHelper.doOpenClass(_project, className); } else { try { if (_project == null || !_project.hasNature(JavaCore.NATURE_ID)) { ResourceBundle rb = ResourceBundle .getBundle("org.eclipse.jst.jsf.common.ui.internal.dialogfield.DialogFieldResources"); //$NON-NLS-1$ Alerts alerts = new Alerts(JSFUICommonPlugin.getDefault(), rb); alerts.error("ClassButtonDialogField.Alert.Title", //$NON-NLS-1$ "ClassButtonDialogField.Alert.Msg"); //$NON-NLS-1$ return; } } catch (CoreException e) { e.printStackTrace(); return; } JavaClassWizard wizard = new JavaClassWizard(_project, className, _superClass, getImplementInterfaces()); wizard.setAutoOpenResource(_autoOpenResource); WizardDialog dialog = new WizardDialog(getShell(), wizard); dialog.create(); setDialogSize(dialog, 400, 500); if (dialog.open() == WizardDialog.OK) { String newValue = wizard.getClassNameWithArgs(); if (!newValue.equals(className)) { setText(newValue); } } } } /** * @return the interfaces * TODO: the contract seems inconsistent * as whether to return null or empty list when none */ protected abstract List getImplementInterfaces(); /** * @return the java search scope to be used. Must not be null */ protected abstract IJavaSearchScope getJavaSearchScope(); private void browseButtonPressed() { Shell shell = getShell(); SelectionDialog dialog = JavaUIHelper.openSelectionDialog(shell, getJavaSearchScope(), _typeFlag); dialog.setTitle(JSFUICommonPlugin.getResourceString("DialogField.ClassButton.SelectType"));//$NON-NLS-1$ if (dialog.open() == SelectionDialog.OK) { String oldClassName = getText(); if (dialog.getResult() != null) { _type = (IType) dialog.getResult()[0]; String newClassName = _type.getFullyQualifiedName(); if (!oldClassName.equals(newClassName)) { setText(newClassName); } } } } private void setDialogSize(Dialog dialog, int width, int height) { Point computedSize = dialog.getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT); width = Math.max(computedSize.x, width); height = Math.max(computedSize.y, height); dialog.getShell().setSize(width, height); } private String trimNonAlphaChars(String className) { className = className.trim(); while (className.length() > 0 && !Character.isLetter(className.charAt(0))) { className = className.substring(1, className.length()); } int loc = className.indexOf(":"); //$NON-NLS-1$ if (loc != -1 && loc > 0) { className = className.substring(0, loc); } else if (loc == 0) { className = ""; //$NON-NLS-1$ } return className; } /** * @return Returns the project. */ public IProject getProject() { return _project; } /** * @param project * The project to set. */ public void setProject(IProject project) { this._project = project; } /** * @return Returns the superClassName. */ public String getSuperClassName() { return _superClass; } /** * @param superClassName * The superClassName to set. */ public void setSuperClassName(String superClassName) { this._superClass = superClassName; } /** * @return Returns the interfacesList. */ protected List getInterfacesList() { return _interfacesList; } /** * Sets (replaces) the interface list * TODO: this list can have at most one element * @param interfaceName */ public void setInterface(String interfaceName) { _interfacesList = new ArrayList(); _interfacesList.add(interfaceName); } /** * @return Returns the _type. */ public IType getType() { return _type; } /** * @return Returns the typeFalg. */ public int getTypeFlag() { return _typeFlag; } /** * @param typeFalg * The typeFalg to set. */ public void setTypeFlag(int typeFalg) { this._typeFlag = typeFalg; } }