nodejs/org.eclipse.wst.jsdt.js.npm/src/org/eclipse/wst/jsdt/js/npm/internal/wizard/NpmInitPage.java - gerrit/jsdt/webtools.jsdt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2015 Red Hat, Inc.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * 	Contributors:
  * 		 Red Hat Inc. - initial API and implementation and/or initial documentation
  *******************************************************************************/
 package org.eclipse.wst.jsdt.js.npm.internal.wizard;

 import java.util.Map;
 import java.util.TreeMap;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.debug.internal.ui.SWTFactory;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.wizard.WizardPage;
 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.events.SelectionListener;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.TableItem;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.dialogs.ContainerSelectionDialog;
 import org.eclipse.wst.jsdt.js.common.ui.PopUpKeyValueDialog;
 import org.eclipse.wst.jsdt.js.common.util.WorkbenchResourceUtil;
 import org.eclipse.wst.jsdt.js.npm.PackageJson;
 import org.eclipse.wst.jsdt.js.npm.PackageJson.Builder;
 import org.eclipse.wst.jsdt.js.npm.internal.Messages;
 import org.eclipse.wst.jsdt.js.npm.internal.NpmConstants;

 /**
  * @author "Ilya Buziuk (ibuziuk)"
  */
 @SuppressWarnings("restriction")
 public class NpmInitPage extends WizardPage {
 	private final IStructuredSelection selection;
 	private IContainer selectedContainer;
 	private Text dirText;
 	private Text nameText;
 	private Text versionText;
 	private Text descriptionText;
 	private Text mainText;
 	private Text authorText;
 	private Text licenseText;

 	private Button useDefaultCheckBox;

 	private Table scriptsTable;
 	private Button addScriptButton;

 	private String defaultName;
 	private String defaultVersion;
 	private String defaultDescription;
 	private String defaultMain;
 	private String defaultAuthor;
 	private String defaultLicense;

 	private String defaultDirectory;
 	private Map<String, String> defaultScripts;

 	public NpmInitPage(IStructuredSelection selection) {
 		super(Messages.NpmInitWizard_PageName);
 		setTitle(Messages.NpmInitWizard_PageTitle);
 		setDescription(Messages.NpmInitWizard_PageDescription);
 		this.selection = selection;
 	}

 	@Override
 	public void createControl(Composite parent) {
 		initializeDialogUnits(parent);
 		Composite mainComposite = SWTFactory.createComposite(parent, parent.getFont(), 1, 1, GridData.FILL_BOTH);
 		((GridLayout) mainComposite.getLayout()).verticalSpacing = 4;

 		createExecutionDirEditor(mainComposite);
 		createUseDefaultsEditor(mainComposite);
 		createBasePropertyEditor(mainComposite);
 		createScriptsEditor(mainComposite);

 		Dialog.applyDialogFont(mainComposite);
 		initiDefaultsValues();
 		setControl(mainComposite);
 	}

 	public String getExecutionDir() {
 		return dirText.getText();
 	}

 	public PackageJson getModel() {
 		String name = nameText.getText();
 		String version = versionText.getText();
 		String description = descriptionText.getText();
 		String main = mainText.getText();
 		String author = authorText.getText();
 		String license = licenseText.getText();
 		Map<String, String> scripts = getKeyValueItems(scriptsTable);

 		Builder builder = new PackageJson.Builder();

 		if (name != null && !name.isEmpty()) {
 			builder.name(name);
 		}

 		if (version != null && !version.isEmpty()) {
 			builder.version(version);
 		}

 		if (description != null) { // empty by default
 			builder.description(description);
 		}

 		if (main != null && !main.isEmpty()) {
 			builder.main(main);
 		}

 		if (scripts != null && !scripts.isEmpty()) {
 			builder.scripts(scripts);
 		}

 		if (author != null) { // empty by default
 			builder.author(author);
 		}

 		if (license != null && !license.isEmpty()) {
 			builder.license(license);
 		}

 		PackageJson model = builder.build();

 		return model;
 	}


 	private void initiDefaultsValues() {
 		this.selectedContainer = WorkbenchResourceUtil.getContainerFromSelection(this.selection);

 		String location = WorkbenchResourceUtil.getAbsolutePath(selectedContainer);

 		this.defaultDirectory = (location != null) ? location : "";  //$NON-NLS-1$
 		this.defaultName = (selectedContainer != null) ? selectedContainer.getProject().getName().replaceAll("\\s","") : NpmConstants.DEFAULT_NAME; //$NON-NLS-1$ //$NON-NLS-2$

 		this.defaultVersion = NpmConstants.DEFAULT_VERSION;
 		this.defaultLicense =  NpmConstants.DEFAULT_LICENSE;
 		this.defaultDescription = NpmConstants.DEFAULT_DESCRIPTION;
 		this.defaultMain = NpmConstants.DEFAULT_MAIN;
 		this.defaultAuthor = NpmConstants.DEFAULT_AUTHOR;
 		this.defaultScripts = NpmConstants.DEFAULT_SCRIPTS;

 		this.dirText.setText(defaultDirectory);
 		this.nameText.setText(defaultName);
 		this.versionText.setText(defaultVersion);
 		this.descriptionText.setText(defaultDescription);
 		this.mainText.setText(defaultMain);
 		this.authorText.setText(defaultAuthor);
 		this.licenseText.setText(defaultLicense);

 		setDefaults(scriptsTable, defaultScripts);

 		boolean useDefault = useDefaultCheckBox.getSelection();

 		this.nameText.setEnabled(!useDefault);
 		this.versionText.setEnabled(!useDefault);
 		this.descriptionText.setEnabled(!useDefault);
 		this.mainText.setEnabled(!useDefault);
 		this.authorText.setEnabled(!useDefault);
 		this.licenseText.setEnabled(!useDefault);

 		this.scriptsTable.setEnabled(!useDefault);
 		this.addScriptButton.setEnabled(!useDefault);
 	}

 	private void createExecutionDirEditor(Composite mainComposite) {
 		Label label = new Label(mainComposite, SWT.NONE);
 		label.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1));
 		label.setText(Messages.NpmInitWizard_BaseDirectory);

 		this.dirText = new Text(mainComposite, SWT.BORDER);
 		this.dirText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 5, 1));
 		this.dirText.addModifyListener(new EntriesChangedListener());

 		final Composite buttonComposite = new Composite(mainComposite, SWT.NONE);
 		buttonComposite.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 5, 1));
 		final GridLayout buttonGridLayout = new GridLayout();
 		buttonGridLayout.marginWidth = 0;
 		buttonGridLayout.marginHeight = 0;
 		buttonGridLayout.numColumns = 1;
 		buttonComposite.setLayout(buttonGridLayout);

 		final Button browseWorkspaceButton = new Button(buttonComposite, SWT.NONE);
 		browseWorkspaceButton.setText(Messages.NpmInitWizard_BrowseWorkspace);
 		browseWorkspaceButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				ContainerSelectionDialog dialog = new ContainerSelectionDialog(getShell(),
 						ResourcesPlugin.getWorkspace().getRoot(), false, Messages.NpmInitWizard_RootFolderSelection);
 				dialog.showClosedProjects(false);

 				int buttonId = dialog.open();
 				if (buttonId == IDialogConstants.OK_ID) {
 					Object[] resource = dialog.getResult();
 					if (resource != null && resource.length > 0) {
 						IPath path = ((IPath) resource[0]);
 						IResource selectedResource = ResourcesPlugin.getWorkspace().getRoot().findMember(path);
 						String location = WorkbenchResourceUtil.getAbsolutePath(selectedResource);
 						if (selectedResource.exists()) {
 							dirText.setText(location);
 						}
 					}
 				}
 			}
 		});

 	}

 	private void createUseDefaultsEditor(Composite mainComposite) {
 		Composite group = SWTFactory.createComposite(mainComposite, 2, 1, GridData.FILL_HORIZONTAL);
 		useDefaultCheckBox = SWTFactory.createCheckButton(group, Messages.NpmInitWizard_UseDefaulConfiguration, null, true, 2);
 		useDefaultCheckBox.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				boolean useDefault = ((Button) e.widget).getSelection();
 				nameText.setEnabled(!useDefault);
 				versionText.setEnabled(!useDefault);
 				descriptionText.setEnabled(!useDefault);
 				mainText.setEnabled(!useDefault);
 				authorText.setEnabled(!useDefault);
 				licenseText.setEnabled(!useDefault);
 				scriptsTable.setEnabled(!useDefault);
 				addScriptButton.setEnabled(!useDefault);

 				if (useDefault) {
 					setDefaults();
 				} else {
 					nameText.setEnabled(true);
 					versionText.setEnabled(true);
 					descriptionText.setEnabled(true);
 					mainText.setEnabled(true);
 					authorText.setEnabled(true);
 					licenseText.setEnabled(true);
 					scriptsTable.setEnabled(true);
 					addScriptButton.setEnabled(true);
 				}
 			}
 		});
 	}

 	private void createBasePropertyEditor(Composite mainComposite) {
 		Group group = SWTFactory.createGroup(mainComposite, Messages.NpmInitWizard_Properties, 2, 1, GridData.FILL_HORIZONTAL);

 		Label nameLabel = new Label(group, SWT.NONE);
 		nameLabel.setText(Messages.NpmInitWizard_Name);
 		nameText = new Text(group, SWT.BORDER);
 		nameText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		nameText.addModifyListener(new EntriesChangedListener());

 		Label versionLabel = new Label(group, SWT.NONE);
 		versionLabel.setText(Messages.NpmInitWizard_Version);
 		versionText = new Text(group, SWT.BORDER);
 		versionText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		versionText.addModifyListener(new EntriesChangedListener());

 		Label descriptionLabel = new Label(group, SWT.NONE);
 		descriptionLabel.setText(Messages.NpmInitWizard_Description);
 		descriptionText = new Text(group, SWT.BORDER);
 		descriptionText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		descriptionText.addModifyListener(new EntriesChangedListener());

 		Label mainLabel = new Label(group, SWT.NONE);
 		mainLabel.setText(Messages.NpmInitWizard_Main);
 		mainText = new Text(group, SWT.BORDER);
 		mainText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		mainText.addModifyListener(new EntriesChangedListener());

 		Label authorLabel = new Label(group, SWT.NONE);
 		authorLabel.setText(Messages.NpmInitWizard_Author);
 		authorText = new Text(group, SWT.BORDER);
 		authorText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		authorText.addModifyListener(new EntriesChangedListener());

 		Label licenseLabel = new Label(group, SWT.NONE);
 		licenseLabel.setText(Messages.NpmInitWizard_License);
 		licenseText = new Text(group, SWT.BORDER);
 		licenseText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		licenseText.addModifyListener(new EntriesChangedListener());
 	}

 	private void createScriptsEditor(Composite mainComposite) {
 		TableGroupComposite scriptsComposite = new TableGroupComposite(Messages.NpmInitWizard_Scripts,
 				Messages.NpmInitWizard_ScriptPopUpName, Messages.NpmInitWizard_ScriptPopUpValue, mainComposite,
 				Messages.NpmInitWizard_AddScript, Messages.NpmInitWizard_EditScript);
 		scriptsComposite.createControls();
 		this.scriptsTable = scriptsComposite.getTable();
 		this.addScriptButton = scriptsComposite.getAddButton();
 	}


 	@Override
 	public String getName() {
 		return Messages.NpmInitWizard_LaunchMainTabName;
 	}

 	private Map<String, String> getKeyValueItems(Table table) {
 		Map<String, String> map = new TreeMap<>();
 		TableItem[] items = table.getItems();
 		if (items != null && items.length > 0) {
 			for (TableItem item : items) {
 				map.put(item.getText(0), item.getText(1));
 			}
 		}
 		return map;
 	}


 	private void setDefaults(Table table, Map<String, String> defaultItems) {
 		if (table != null && defaultItems != null && !defaultItems.isEmpty()) {
 			table.removeAll();
 			for (Map.Entry<String, String> entry : defaultItems.entrySet()) {
 			    TableItem item = new TableItem(table, SWT.NONE);
 			    item.setText(0, entry.getKey());
 			    item.setText(1, entry.getValue());
 			}
 		}
 	}


 	private void setDefaults() {
 		nameText.setText(defaultName);
 		versionText.setText(defaultVersion);
 		descriptionText.setText(defaultDescription);
 		mainText.setText(defaultMain);
 		authorText.setText(defaultAuthor);
 		licenseText.setText(defaultLicense);
 		setDefaults(scriptsTable, defaultScripts);
 	}

 	private class EntriesChangedListener implements ModifyListener, SelectionListener {
 		public void modifyText(ModifyEvent e) {
 			entriesChanged();
 		}

 		public void widgetDefaultSelected(SelectionEvent e) {
 			entriesChanged();
 		}

 		public void widgetSelected(SelectionEvent e) {
 			entriesChanged();
 		}
 	}

 	private class TableGroupComposite {
 		private String groupLabel;
 		private String keyLabel;
 		private String valueLabel;
 		private Composite parent;
 		private Table table;
 		private Button addButton;
 		private Button editButton;
 		private Button removeButton;
 		private String addDialogTitle;
 		private String editDialogTitle;

 		public TableGroupComposite(String groupLabel, String keyLabel, String valueLabel, Composite parent, String addDialogTitle, String editDialogTitle) {
 			this.groupLabel = groupLabel;
 			this.keyLabel = keyLabel;
 			this.valueLabel = valueLabel;
 			this.parent = parent;
 			this.addDialogTitle = addDialogTitle;
 			this.editDialogTitle = editDialogTitle;
 		}

 		public Table getTable() {
 			return this.table;
 		}

 		public Button getAddButton() {
 			return this.addButton;
 		}

 		public void createControls() {
 			Composite tableGroup = SWTFactory.createGroup(parent, groupLabel, 2, 1, GridData.FILL_HORIZONTAL);
 			TableViewer tableViewer = new TableViewer(tableGroup, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
 		    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
 		      public void doubleClick(DoubleClickEvent event) {
 		        TableItem[] selection = table.getSelection();
 		        if(selection.length == 1) {
 		          editProperty(editDialogTitle, selection[0].getText(0), selection[0].getText(1));
 		        }
 		      }
 		    });
 		    tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {

 		      public void selectionChanged(SelectionChangedEvent event) {
 		        TableItem[] items = table.getSelection();
 		        if(items == null || items.length == 0) {
 		          editButton.setEnabled(false);
 		          removeButton.setEnabled(false);
 		        } else if(items.length == 1) {
 		          editButton.setEnabled(true);
 		          removeButton.setEnabled(true);
 		        } else {
 		          editButton.setEnabled(false);
 		          removeButton.setEnabled(true);
 		        }
 		      }

 		    });

 		    table = tableViewer.getTable();
 			GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
 			data.heightHint = 50;
 			table.setLayoutData(data);
 		    table.setLinesVisible(true);
 		    table.setHeaderVisible(true);

 		    final TableColumn propColumn = new TableColumn(this.table, SWT.NONE, 0);
 		    propColumn.setWidth(120);
 		    propColumn.setText(Messages.NpmInitWizard_ScriptName);

 		    final TableColumn valueColumn = new TableColumn(this.table, SWT.NONE, 1);
 		    valueColumn.setWidth(250);
 		    valueColumn.setText(Messages.NpmInitWizard_ScriptValue);

 			Composite buttonComposite = new Composite(tableGroup, SWT.NONE);
 			FillLayout fillLayout = new FillLayout(SWT.VERTICAL);
 			fillLayout.spacing = 2;
 			buttonComposite.setLayout(fillLayout);

 		    addButton = new Button(buttonComposite, SWT.NONE);
 		    addButton.setText(Messages.NpmInitWizard_ButtonAdd);
 		    addButton.addSelectionListener(new SelectionAdapter() {
 		      public void widgetSelected(SelectionEvent e) {
 		        addProperty(addDialogTitle);
 		      }
 		    });
 		    editButton = new Button(buttonComposite, SWT.NONE);
 		    editButton.setText(Messages.NpmInitWizard_ButtonEdit);
 		    editButton.addSelectionListener(new SelectionAdapter() {
 		      public void widgetSelected(SelectionEvent e) {
 		        if(table.getSelectionCount() > 0) {
 		          TableItem[] selection = table.getSelection();
 		          if(selection.length == 1) {
 		            editProperty(editDialogTitle, selection[0].getText(0), selection[0].getText(1));
 		          }
 		        }
 		      }
 		    });
 		    editButton.setEnabled(false);
 		    removeButton = new Button(buttonComposite, SWT.NONE);
 		    removeButton.setText(Messages.NpmInitWizard_ButtonRemove);
 		    removeButton.addSelectionListener(new SelectionAdapter() {
 		      public void widgetSelected(SelectionEvent e) {
 		        if(table.getSelectionCount() > 0) {
 		          table.remove(table.getSelectionIndices());
 		        }
 		      }
 		    });
 		    removeButton.setEnabled(false);
 		}

 		private void addProperty(String title) {
 			PopUpKeyValueDialog dialog = new PopUpKeyValueDialog(getShell(), title, "", "", keyLabel, valueLabel,  null); //$NON-NLS-1$ //$NON-NLS-2$
 			if (dialog.open() == IDialogConstants.OK_ID) {
 				TableItem item = new TableItem(table, SWT.NONE);
 				item.setText(0, dialog.getKey());
 				item.setText(1, dialog.getValue());
 				entriesChanged();
 			}
 		}

 		private void editProperty(String title, String name, String value) {
 			PopUpKeyValueDialog dialog = new PopUpKeyValueDialog(getShell(), title, name, value, keyLabel, valueLabel,  null);
 			if (dialog.open() == IDialogConstants.OK_ID) {
 				TableItem[] item = table.getSelection();
 				item[0].setText(0, dialog.getKey());
 				item[0].setText(1, dialog.getValue());
 				entriesChanged();
 			}
 		}
 	}

 	private void entriesChanged() {
 		String dir = dirText.getText();
 		if (dir == null || dir.isEmpty()) {
 			setPageComplete(false);
 			setErrorMessage(Messages.NpmInitWizard_ErrorDirNotDefiened);
 		} else {
 			IContainer container = ResourcesPlugin.getWorkspace().getRoot().getContainerForLocation(new Path(dir));
 			if (container != null && container.exists()) {
 				IFile packageJson = container.getFile(new Path(NpmConstants.PACKAGE_JSON));
 				if (packageJson.exists()) {
 					setError(Messages.NpmInitWizard_ErrorPackageJsonAlreadyExist);
 				} else {
 					setComplete();
 				}
 			} else {
 				setError(Messages.NpmInitWizard_ErrorDirNotExist);
 			}
 		}
 	}

 	private void setError(String message) {
 		setPageComplete(false);
 		setErrorMessage(message);
 	}

 	private void setComplete() {
 		setPageComplete(true);
 		setErrorMessage(null);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2015 Red Hat, Inc.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* Contributors:
	* Red Hat Inc. - initial API and implementation and/or initial documentation
	*******************************************************************************/
	package org.eclipse.wst.jsdt.js.npm.internal.wizard;

	import java.util.Map;
	import java.util.TreeMap;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.debug.internal.ui.SWTFactory;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.wizard.WizardPage;
	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.events.SelectionListener;
	import org.eclipse.swt.layout.FillLayout;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.TableItem;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.dialogs.ContainerSelectionDialog;
	import org.eclipse.wst.jsdt.js.common.ui.PopUpKeyValueDialog;
	import org.eclipse.wst.jsdt.js.common.util.WorkbenchResourceUtil;
	import org.eclipse.wst.jsdt.js.npm.PackageJson;
	import org.eclipse.wst.jsdt.js.npm.PackageJson.Builder;
	import org.eclipse.wst.jsdt.js.npm.internal.Messages;
	import org.eclipse.wst.jsdt.js.npm.internal.NpmConstants;

	/**
	* @author "Ilya Buziuk (ibuziuk)"
	*/
	@SuppressWarnings("restriction")
	public class NpmInitPage extends WizardPage {
	private final IStructuredSelection selection;
	private IContainer selectedContainer;
	private Text dirText;
	private Text nameText;
	private Text versionText;
	private Text descriptionText;
	private Text mainText;
	private Text authorText;
	private Text licenseText;

	private Button useDefaultCheckBox;

	private Table scriptsTable;
	private Button addScriptButton;

	private String defaultName;
	private String defaultVersion;
	private String defaultDescription;
	private String defaultMain;
	private String defaultAuthor;
	private String defaultLicense;

	private String defaultDirectory;
	private Map<String, String> defaultScripts;

	public NpmInitPage(IStructuredSelection selection) {
	super(Messages.NpmInitWizard_PageName);
	setTitle(Messages.NpmInitWizard_PageTitle);
	setDescription(Messages.NpmInitWizard_PageDescription);
	this.selection = selection;
	}

	@Override
	public void createControl(Composite parent) {
	initializeDialogUnits(parent);
	Composite mainComposite = SWTFactory.createComposite(parent, parent.getFont(), 1, 1, GridData.FILL_BOTH);
	((GridLayout) mainComposite.getLayout()).verticalSpacing = 4;

	createExecutionDirEditor(mainComposite);
	createUseDefaultsEditor(mainComposite);
	createBasePropertyEditor(mainComposite);
	createScriptsEditor(mainComposite);

	Dialog.applyDialogFont(mainComposite);
	initiDefaultsValues();
	setControl(mainComposite);
	}

	public String getExecutionDir() {
	return dirText.getText();
	}

	public PackageJson getModel() {
	String name = nameText.getText();
	String version = versionText.getText();
	String description = descriptionText.getText();
	String main = mainText.getText();
	String author = authorText.getText();
	String license = licenseText.getText();
	Map<String, String> scripts = getKeyValueItems(scriptsTable);

	Builder builder = new PackageJson.Builder();

	if (name != null && !name.isEmpty()) {
	builder.name(name);
	}

	if (version != null && !version.isEmpty()) {
	builder.version(version);
	}

	if (description != null) { // empty by default
	builder.description(description);
	}

	if (main != null && !main.isEmpty()) {
	builder.main(main);
	}

	if (scripts != null && !scripts.isEmpty()) {
	builder.scripts(scripts);
	}

	if (author != null) { // empty by default
	builder.author(author);
	}

	if (license != null && !license.isEmpty()) {
	builder.license(license);
	}

	PackageJson model = builder.build();

	return model;
	}


	private void initiDefaultsValues() {
	this.selectedContainer = WorkbenchResourceUtil.getContainerFromSelection(this.selection);

	String location = WorkbenchResourceUtil.getAbsolutePath(selectedContainer);

	this.defaultDirectory = (location != null) ? location : ""; //$NON-NLS-1$
	this.defaultName = (selectedContainer != null) ? selectedContainer.getProject().getName().replaceAll("\\s","") : NpmConstants.DEFAULT_NAME; //$NON-NLS-1$ //$NON-NLS-2$

	this.defaultVersion = NpmConstants.DEFAULT_VERSION;
	this.defaultLicense = NpmConstants.DEFAULT_LICENSE;
	this.defaultDescription = NpmConstants.DEFAULT_DESCRIPTION;
	this.defaultMain = NpmConstants.DEFAULT_MAIN;
	this.defaultAuthor = NpmConstants.DEFAULT_AUTHOR;
	this.defaultScripts = NpmConstants.DEFAULT_SCRIPTS;

	this.dirText.setText(defaultDirectory);
	this.nameText.setText(defaultName);
	this.versionText.setText(defaultVersion);
	this.descriptionText.setText(defaultDescription);
	this.mainText.setText(defaultMain);
	this.authorText.setText(defaultAuthor);
	this.licenseText.setText(defaultLicense);

	setDefaults(scriptsTable, defaultScripts);

	boolean useDefault = useDefaultCheckBox.getSelection();

	this.nameText.setEnabled(!useDefault);
	this.versionText.setEnabled(!useDefault);
	this.descriptionText.setEnabled(!useDefault);
	this.mainText.setEnabled(!useDefault);
	this.authorText.setEnabled(!useDefault);
	this.licenseText.setEnabled(!useDefault);

	this.scriptsTable.setEnabled(!useDefault);
	this.addScriptButton.setEnabled(!useDefault);
	}

	private void createExecutionDirEditor(Composite mainComposite) {
	Label label = new Label(mainComposite, SWT.NONE);
	label.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1));
	label.setText(Messages.NpmInitWizard_BaseDirectory);

	this.dirText = new Text(mainComposite, SWT.BORDER);
	this.dirText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 5, 1));
	this.dirText.addModifyListener(new EntriesChangedListener());

	final Composite buttonComposite = new Composite(mainComposite, SWT.NONE);
	buttonComposite.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 5, 1));
	final GridLayout buttonGridLayout = new GridLayout();
	buttonGridLayout.marginWidth = 0;
	buttonGridLayout.marginHeight = 0;
	buttonGridLayout.numColumns = 1;
	buttonComposite.setLayout(buttonGridLayout);

	final Button browseWorkspaceButton = new Button(buttonComposite, SWT.NONE);
	browseWorkspaceButton.setText(Messages.NpmInitWizard_BrowseWorkspace);
	browseWorkspaceButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	ContainerSelectionDialog dialog = new ContainerSelectionDialog(getShell(),
	ResourcesPlugin.getWorkspace().getRoot(), false, Messages.NpmInitWizard_RootFolderSelection);
	dialog.showClosedProjects(false);

	int buttonId = dialog.open();
	if (buttonId == IDialogConstants.OK_ID) {
	Object[] resource = dialog.getResult();
	if (resource != null && resource.length > 0) {
	IPath path = ((IPath) resource[0]);
	IResource selectedResource = ResourcesPlugin.getWorkspace().getRoot().findMember(path);
	String location = WorkbenchResourceUtil.getAbsolutePath(selectedResource);
	if (selectedResource.exists()) {
	dirText.setText(location);
	}
	}
	}
	}
	});

	}

	private void createUseDefaultsEditor(Composite mainComposite) {
	Composite group = SWTFactory.createComposite(mainComposite, 2, 1, GridData.FILL_HORIZONTAL);
	useDefaultCheckBox = SWTFactory.createCheckButton(group, Messages.NpmInitWizard_UseDefaulConfiguration, null, true, 2);
	useDefaultCheckBox.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	boolean useDefault = ((Button) e.widget).getSelection();
	nameText.setEnabled(!useDefault);
	versionText.setEnabled(!useDefault);
	descriptionText.setEnabled(!useDefault);
	mainText.setEnabled(!useDefault);
	authorText.setEnabled(!useDefault);
	licenseText.setEnabled(!useDefault);
	scriptsTable.setEnabled(!useDefault);
	addScriptButton.setEnabled(!useDefault);

	if (useDefault) {
	setDefaults();
	} else {
	nameText.setEnabled(true);
	versionText.setEnabled(true);
	descriptionText.setEnabled(true);
	mainText.setEnabled(true);
	authorText.setEnabled(true);
	licenseText.setEnabled(true);
	scriptsTable.setEnabled(true);
	addScriptButton.setEnabled(true);
	}
	}
	});
	}

	private void createBasePropertyEditor(Composite mainComposite) {
	Group group = SWTFactory.createGroup(mainComposite, Messages.NpmInitWizard_Properties, 2, 1, GridData.FILL_HORIZONTAL);

	Label nameLabel = new Label(group, SWT.NONE);
	nameLabel.setText(Messages.NpmInitWizard_Name);
	nameText = new Text(group, SWT.BORDER);
	nameText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	nameText.addModifyListener(new EntriesChangedListener());

	Label versionLabel = new Label(group, SWT.NONE);
	versionLabel.setText(Messages.NpmInitWizard_Version);
	versionText = new Text(group, SWT.BORDER);
	versionText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	versionText.addModifyListener(new EntriesChangedListener());

	Label descriptionLabel = new Label(group, SWT.NONE);
	descriptionLabel.setText(Messages.NpmInitWizard_Description);
	descriptionText = new Text(group, SWT.BORDER);
	descriptionText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	descriptionText.addModifyListener(new EntriesChangedListener());

	Label mainLabel = new Label(group, SWT.NONE);
	mainLabel.setText(Messages.NpmInitWizard_Main);
	mainText = new Text(group, SWT.BORDER);
	mainText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	mainText.addModifyListener(new EntriesChangedListener());

	Label authorLabel = new Label(group, SWT.NONE);
	authorLabel.setText(Messages.NpmInitWizard_Author);
	authorText = new Text(group, SWT.BORDER);
	authorText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	authorText.addModifyListener(new EntriesChangedListener());

	Label licenseLabel = new Label(group, SWT.NONE);
	licenseLabel.setText(Messages.NpmInitWizard_License);
	licenseText = new Text(group, SWT.BORDER);
	licenseText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	licenseText.addModifyListener(new EntriesChangedListener());
	}

	private void createScriptsEditor(Composite mainComposite) {
	TableGroupComposite scriptsComposite = new TableGroupComposite(Messages.NpmInitWizard_Scripts,
	Messages.NpmInitWizard_ScriptPopUpName, Messages.NpmInitWizard_ScriptPopUpValue, mainComposite,
	Messages.NpmInitWizard_AddScript, Messages.NpmInitWizard_EditScript);
	scriptsComposite.createControls();
	this.scriptsTable = scriptsComposite.getTable();
	this.addScriptButton = scriptsComposite.getAddButton();
	}


	@Override
	public String getName() {
	return Messages.NpmInitWizard_LaunchMainTabName;
	}

	private Map<String, String> getKeyValueItems(Table table) {
	Map<String, String> map = new TreeMap<>();
	TableItem[] items = table.getItems();
	if (items != null && items.length > 0) {
	for (TableItem item : items) {
	map.put(item.getText(0), item.getText(1));
	}
	}
	return map;
	}


	private void setDefaults(Table table, Map<String, String> defaultItems) {
	if (table != null && defaultItems != null && !defaultItems.isEmpty()) {
	table.removeAll();
	for (Map.Entry<String, String> entry : defaultItems.entrySet()) {
	TableItem item = new TableItem(table, SWT.NONE);
	item.setText(0, entry.getKey());
	item.setText(1, entry.getValue());
	}
	}
	}


	private void setDefaults() {
	nameText.setText(defaultName);
	versionText.setText(defaultVersion);
	descriptionText.setText(defaultDescription);
	mainText.setText(defaultMain);
	authorText.setText(defaultAuthor);
	licenseText.setText(defaultLicense);
	setDefaults(scriptsTable, defaultScripts);
	}

	private class EntriesChangedListener implements ModifyListener, SelectionListener {
	public void modifyText(ModifyEvent e) {
	entriesChanged();
	}

	public void widgetDefaultSelected(SelectionEvent e) {
	entriesChanged();
	}

	public void widgetSelected(SelectionEvent e) {
	entriesChanged();
	}
	}

	private class TableGroupComposite {
	private String groupLabel;
	private String keyLabel;
	private String valueLabel;
	private Composite parent;
	private Table table;
	private Button addButton;
	private Button editButton;
	private Button removeButton;
	private String addDialogTitle;
	private String editDialogTitle;

	public TableGroupComposite(String groupLabel, String keyLabel, String valueLabel, Composite parent, String addDialogTitle, String editDialogTitle) {
	this.groupLabel = groupLabel;
	this.keyLabel = keyLabel;
	this.valueLabel = valueLabel;
	this.parent = parent;
	this.addDialogTitle = addDialogTitle;
	this.editDialogTitle = editDialogTitle;
	}

	public Table getTable() {
	return this.table;
	}

	public Button getAddButton() {
	return this.addButton;
	}

	public void createControls() {
	Composite tableGroup = SWTFactory.createGroup(parent, groupLabel, 2, 1, GridData.FILL_HORIZONTAL);
	TableViewer tableViewer = new TableViewer(tableGroup, SWT.BORDER \| SWT.FULL_SELECTION \| SWT.MULTI);
	tableViewer.addDoubleClickListener(new IDoubleClickListener() {
	public void doubleClick(DoubleClickEvent event) {
	TableItem[] selection = table.getSelection();
	if(selection.length == 1) {
	editProperty(editDialogTitle, selection[0].getText(0), selection[0].getText(1));
	}
	}
	});
	tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {

	public void selectionChanged(SelectionChangedEvent event) {
	TableItem[] items = table.getSelection();
	if(items == null \|\| items.length == 0) {
	editButton.setEnabled(false);
	removeButton.setEnabled(false);
	} else if(items.length == 1) {
	editButton.setEnabled(true);
	removeButton.setEnabled(true);
	} else {
	editButton.setEnabled(false);
	removeButton.setEnabled(true);
	}
	}

	});

	table = tableViewer.getTable();
	GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
	data.heightHint = 50;
	table.setLayoutData(data);
	table.setLinesVisible(true);
	table.setHeaderVisible(true);

	final TableColumn propColumn = new TableColumn(this.table, SWT.NONE, 0);
	propColumn.setWidth(120);
	propColumn.setText(Messages.NpmInitWizard_ScriptName);

	final TableColumn valueColumn = new TableColumn(this.table, SWT.NONE, 1);
	valueColumn.setWidth(250);
	valueColumn.setText(Messages.NpmInitWizard_ScriptValue);

	Composite buttonComposite = new Composite(tableGroup, SWT.NONE);
	FillLayout fillLayout = new FillLayout(SWT.VERTICAL);
	fillLayout.spacing = 2;
	buttonComposite.setLayout(fillLayout);

	addButton = new Button(buttonComposite, SWT.NONE);
	addButton.setText(Messages.NpmInitWizard_ButtonAdd);
	addButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	addProperty(addDialogTitle);
	}
	});
	editButton = new Button(buttonComposite, SWT.NONE);
	editButton.setText(Messages.NpmInitWizard_ButtonEdit);
	editButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if(table.getSelectionCount() > 0) {
	TableItem[] selection = table.getSelection();
	if(selection.length == 1) {
	editProperty(editDialogTitle, selection[0].getText(0), selection[0].getText(1));
	}
	}
	}
	});
	editButton.setEnabled(false);
	removeButton = new Button(buttonComposite, SWT.NONE);
	removeButton.setText(Messages.NpmInitWizard_ButtonRemove);
	removeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if(table.getSelectionCount() > 0) {
	table.remove(table.getSelectionIndices());
	}
	}
	});
	removeButton.setEnabled(false);
	}

	private void addProperty(String title) {
	PopUpKeyValueDialog dialog = new PopUpKeyValueDialog(getShell(), title, "", "", keyLabel, valueLabel, null); //$NON-NLS-1$ //$NON-NLS-2$
	if (dialog.open() == IDialogConstants.OK_ID) {
	TableItem item = new TableItem(table, SWT.NONE);
	item.setText(0, dialog.getKey());
	item.setText(1, dialog.getValue());
	entriesChanged();
	}
	}

	private void editProperty(String title, String name, String value) {
	PopUpKeyValueDialog dialog = new PopUpKeyValueDialog(getShell(), title, name, value, keyLabel, valueLabel, null);
	if (dialog.open() == IDialogConstants.OK_ID) {
	TableItem[] item = table.getSelection();
	item[0].setText(0, dialog.getKey());
	item[0].setText(1, dialog.getValue());
	entriesChanged();
	}
	}
	}

	private void entriesChanged() {
	String dir = dirText.getText();
	if (dir == null \|\| dir.isEmpty()) {
	setPageComplete(false);
	setErrorMessage(Messages.NpmInitWizard_ErrorDirNotDefiened);
	} else {
	IContainer container = ResourcesPlugin.getWorkspace().getRoot().getContainerForLocation(new Path(dir));
	if (container != null && container.exists()) {
	IFile packageJson = container.getFile(new Path(NpmConstants.PACKAGE_JSON));
	if (packageJson.exists()) {
	setError(Messages.NpmInitWizard_ErrorPackageJsonAlreadyExist);
	} else {
	setComplete();
	}
	} else {
	setError(Messages.NpmInitWizard_ErrorDirNotExist);
	}
	}
	}

	private void setError(String message) {
	setPageComplete(false);
	setErrorMessage(message);
	}

	private void setComplete() {
	setPageComplete(true);
	setErrorMessage(null);
	}

	}