Java tutorial
/** * */ package mt.com.southedge.jclockwork.plugin.wizard; /* ****************************************************************************** * Copyright (c) 2011 SouthEdge Software and Consultancy. * 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: * Carl Frendo - initial design and implementation * ******************************************************************************/ /* * 15-03-2011 - Added addDelimiter method. * 23-03-2011 - Added check for non-bean classes */ import java.lang.reflect.Method; import mt.com.southedge.jclockwork.commons.log.util.StatusInfo; import mt.com.southedge.jclockwork.plugin.classloader.JClockWorkClassLoader; import mt.com.southedge.jclockwork.plugin.messages.ClockWorkWizardMessages; import mt.com.southedge.jclockwork.plugin.utils.IgnoreMethodUtil; import mt.com.southedge.jclockwork.plugin.wizard.controls.CreateControlLabel; import mt.com.southedge.jclockwork.plugin.wizard.controls.CreateControlObject; import mt.com.southedge.jclockwork.plugin.wizard.controls.CreateSelectionButtonGroup; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.Signature; import org.eclipse.jdt.ui.CodeGeneration; import org.eclipse.jdt.ui.wizards.NewTypeWizardPage; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; /** * * @author cfrendo * */ public class MainObjectMapWizardPage extends NewTypeWizardPage { private static final int FOUR = 4; private static final String PAGE_NAME = "MainObjectMapWizardPage"; //$NON-NLS-1$ private static final String SETTINGS_CREATEMAIN = "create_main"; //$NON-NLS-1$ private static final String SETTINGS_CREATECONSTR = "create_constructor"; //$NON-NLS-1$ private static final String SETTINGS_CREATEUNIMPLEMENTED = "create_unimplemented"; //$NON-NLS-1$ private IStatus statusSourceBean; private IStatus statusTargetBean; private CreateSelectionButtonGroup createSelectionButtonGroup; private CreateControlObject sourceControlObject; private CreateControlObject targetControlObject; private StatusInfo statInfo; private IJavaElement jelem; private TypeFieldListenerAdapter adapter = new TypeFieldListenerAdapter(); /** * Simple constructor. */ public MainObjectMapWizardPage() { super(true, PAGE_NAME); setTitle(ClockWorkWizardMessages.ClockWorkWizard_Title); setDescription(ClockWorkWizardMessages.ClockWorkWizard_Description); String[] buttonNames3 = new String[] { ClockWorkWizardMessages.ClockWorkWizard_Create_Main_Method, ClockWorkWizardMessages.ClockWorkWizard_Create_Super_Constructor, ClockWorkWizardMessages.ClockWorkWizard_Create_Inherited_Methods }; createSelectionButtonGroup = new CreateSelectionButtonGroup(SWT.CHECK, buttonNames3, 1, ClockWorkWizardMessages.ClockWorkWizard_Create_Method_Stubs); } /** * Method that creates all the controls in the wizard form. * * @param parent the composite */ public void createControl(Composite parent) { initializeDialogUnits(parent); Composite composite = new Composite(parent, SWT.NONE); composite.setFont(parent.getFont()); int nColumns = FOUR; GridLayout layout = new GridLayout(); layout.numColumns = nColumns; composite.setLayout(layout); createContainerControls(composite, nColumns); createPackageControls(composite, nColumns); createSeparator(composite, nColumns); createTypeNameControls(composite, nColumns); createModifierControls(composite, nColumns); createSuperClassControls(composite, nColumns); createSuperInterfacesControls(composite, nColumns); createMethodStubSelectionControls(composite, nColumns); createSeparator(composite, nColumns); sourceControlObject = createBeanControls(composite, nColumns, new CreateControlObject(ClockWorkWizardMessages.ClockWorkWizard_Source_Label, ClockWorkWizardMessages.ClockWorkWizard_Browse_Button)); targetControlObject = createBeanControls(composite, nColumns, new CreateControlObject(ClockWorkWizardMessages.ClockWorkWizard_Target_Label, ClockWorkWizardMessages.ClockWorkWizard_Browse_Button)); setControl(composite); Dialog.applyDialogFont(composite); } /** * * @param composite the compsite * @param nColumns the number of columns * @param controlObject the controlObject * @return */ public CreateControlObject createBeanControls(Composite composite, int nColumns, CreateControlObject controlObject) { controlObject.createBeanControls(composite, nColumns); controlObject.getTextbox().addModifyListener(adapter); return controlObject; } /** * * @param selection the init selection */ public void init(IStructuredSelection selection) { jelem = getInitialJavaElement(selection); initContainerPage(jelem); initTypePage(jelem); doStatusUpdate(); boolean createMain = false; boolean createConstructors = false; boolean createUnimplemented = true; IDialogSettings dialogSettings = getDialogSettings(); if (dialogSettings != null) { IDialogSettings section = dialogSettings.getSection(PAGE_NAME); if (section != null) { createMain = section.getBoolean(SETTINGS_CREATEMAIN); createConstructors = section.getBoolean(SETTINGS_CREATECONSTR); createUnimplemented = section.getBoolean(SETTINGS_CREATEUNIMPLEMENTED); } } setMethodStubSelection(createMain, createConstructors, createUnimplemented, true); } private void createMethodStubSelectionControls(Composite composite, int nColumns) { Control labelControl = createSelectionButtonGroup.getLabelControl(composite); setHorizontalSpan(labelControl, nColumns); CreateControlLabel.createEmptySpace(composite); Control buttonGroup = createSelectionButtonGroup.getSelectionButtonsGroup(composite); setHorizontalSpan(buttonGroup, nColumns - 1); } private void setHorizontalSpan(Control control, int nColumns) { Object ld = control.getLayoutData(); if (ld instanceof GridData) { ((GridData) ld).horizontalSpan = nColumns; } else if (nColumns != 1) { GridData gd = new GridData(); gd.horizontalSpan = nColumns; control.setLayoutData(gd); } } private class TypeFieldListenerAdapter implements ModifyListener { /** * @param e the event */ public void modifyText(ModifyEvent e) { handleFieldChanged("CONTAINER"); } } /** * * @param createMain set enabled the main method control check box * @param createConstructors set enabled the super constructor check box * @param createInherited set enabled the create inherited methods check box * @param canBeModified */ public void setMethodStubSelection(boolean createMain, boolean createConstructors, boolean createInherited, boolean canBeModified) { createSelectionButtonGroup.setSelection(0, createMain); createSelectionButtonGroup.setSelection(1, createConstructors); createSelectionButtonGroup.setSelection(2, createInherited); } /** * Updates the IStatuses of specified controls. */ public void doStatusUpdate() { IStatus[] status = new IStatus[] { fContainerStatus, isEnclosingTypeSelected() ? fEnclosingTypeStatus : fPackageStatus, fTypeNameStatus, fModifierStatus, fSuperClassStatus, fSuperInterfacesStatus, statusSourceBean, statusTargetBean }; updateStatus(status); } /** * Method that is called each time a control specified from the doStatusUpdate is modified. */ protected void handleFieldChanged(String fieldName) { super.handleFieldChanged(fieldName); statusSourceBean = statusSourceChanged(); statusTargetBean = statusTargetChanged(); doStatusUpdate(); } private IStatus statusSourceChanged() { statInfo = new StatusInfo(); IPackageFragmentRoot root = getPackageFragmentRoot(); if (sourceControlObject != null) { sourceControlObject.getButton().setEnabled(root != null); } if (root == null) { statInfo.setError(""); return statInfo; } if (sourceControlObject != null) { String textValue = sourceControlObject.getTextbox().getText(); if (textValue.length() == 0) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_Empty); return statInfo; } if (checkForBeans()) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_Target_Match); return statInfo; } try { JClockWorkClassLoader loader = JClockWorkClassLoader.getInstance(); loader.createClassLoader(getJavaProject()).loadClass(sourceControlObject.getTextbox().getText()); } catch (ClassNotFoundException i) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_TSIXE); return statInfo; } catch (CoreException e) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_TSIXE); return statInfo; } try { Method[] methods = Class.forName(sourceControlObject.getTextbox().getText()).getDeclaredMethods(); boolean foundGetter = false; for (Method method : methods) { if ((method.getName().startsWith("get") || method.getName().startsWith("is")) && !IgnoreMethodUtil.containsNameExceptions(method.getName())) { foundGetter = true; } } if (!foundGetter) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_NoGetterInClass); return statInfo; } } catch (SecurityException e) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_InvalidClass); return statInfo; } catch (ClassNotFoundException e) { // should not happen. Loaded class } } return statInfo; } private boolean checkForBeans() { return sourceControlObject.getTextbox().getText().equals(targetControlObject.getTextbox().getText()); } private IStatus statusTargetChanged() { statInfo = new StatusInfo(); IPackageFragmentRoot root = getPackageFragmentRoot(); if (targetControlObject != null) { targetControlObject.getButton().setEnabled(root != null); } if (root == null) { statInfo.setError(""); return statInfo; } if (targetControlObject != null) { String textValue = targetControlObject.getTextbox().getText(); if (textValue.length() == 0) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Target_Empty); return statInfo; } if (checkForBeans()) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Source_Target_Match); return statInfo; } try { JClockWorkClassLoader loader = JClockWorkClassLoader.getInstance(); loader.createClassLoader(getJavaProject()).loadClass(targetControlObject.getTextbox().getText()); } catch (ClassNotFoundException i) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Target_TSIXE); return statInfo; } catch (CoreException e) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Target_TSIXE); } try { Method[] methods = Class.forName(targetControlObject.getTextbox().getText()).getDeclaredMethods(); boolean foundGetter = false; for (Method method : methods) { if ((method.getName().startsWith("get") || method.getName().startsWith("is")) && !IgnoreMethodUtil.containsNameExceptions(method.getName())) { foundGetter = true; } } if (!foundGetter) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Target_NoGetterInClass); return statInfo; } } catch (SecurityException e) { statInfo.setError(ClockWorkWizardMessages.ClockWorkWizard_Target_InvalidClass); return statInfo; } catch (ClassNotFoundException e) { // should not happen. Loaded class } } return statInfo; } /** * @param visible sets visible enabled controls visible or not visible */ public void setVisible(boolean visible) { super.setVisible(visible); if (visible) { setFocus(); } else { IDialogSettings dialogSettings = getDialogSettings(); if (dialogSettings != null) { IDialogSettings section = dialogSettings.getSection(PAGE_NAME); if (section == null) { section = dialogSettings.addNewSection(PAGE_NAME); } section.put(SETTINGS_CREATEMAIN, createSelectionButtonGroup.isSelected(0)); section.put(SETTINGS_CREATECONSTR, createSelectionButtonGroup.isSelected(1)); section.put(SETTINGS_CREATEUNIMPLEMENTED, createSelectionButtonGroup.isSelected(2)); } } } /** * method designed to be called on finish. * * @param type the file type to be created * @param imports the imports to be added * @param monitor handles the process */ protected void createTypeMembers(IType type, ImportsManager imports, IProgressMonitor monitor) throws CoreException { boolean doMain = createSelectionButtonGroup.isSelected(0); boolean doConstr = createSelectionButtonGroup.isSelected(1); boolean doInherited = createSelectionButtonGroup.isSelected(2); createInheritedMethods(type, doConstr, doInherited, imports, new SubProgressMonitor(monitor, 1)); if (doMain) { StringBuffer buf = new StringBuffer(); final String lineDelim = "\n"; //$NON-NLS-1$ String comment = CodeGeneration.getMethodComment(type.getCompilationUnit(), type.getTypeQualifiedName('.'), "main", new String[] { "args" }, new String[0], //$NON-NLS-1$//$NON-NLS-2$ Signature.createTypeSignature("void", true), null, lineDelim); //$NON-NLS-1$ if (comment != null) { buf.append(comment); buf.append(lineDelim); } buf.append("public static void main("); //$NON-NLS-1$ buf.append(imports.addImport("java.lang.String")); //$NON-NLS-1$ buf.append("[] args) {"); //$NON-NLS-1$ buf.append(lineDelim); final String content = CodeGeneration.getMethodBodyContent(type.getCompilationUnit(), type.getTypeQualifiedName('.'), "main", false, "", lineDelim); //$NON-NLS-1$ //$NON-NLS-2$ if (content != null && content.length() != 0) buf.append(content); buf.append(lineDelim); buf.append("}"); //$NON-NLS-1$ type.createMethod(buf.toString(), null, false, null); } if (monitor != null) { monitor.done(); } } /** * @return the sourceControlObject */ public CreateControlObject getSourceControlObject() { return sourceControlObject; } /** * @return the targetControlObject */ public CreateControlObject getTargetControlObject() { return targetControlObject; } /** * @return the jelem */ public IJavaElement getJelem() { return jelem; } }