org.eclipse.xwt.tools.ui.designer/src/org/eclipse/xwt/tools/ui/designer/dialogs/AbstractEventHandlerDialog.java - xwt/org.eclipse.xwt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) 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:
  *     Soyatec - initial API and implementation
  *******************************************************************************/
 package org.eclipse.xwt.tools.ui.designer.dialogs;

 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Point;
 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.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.wst.sse.ui.internal.StructuredTextViewer;
 import org.eclipse.wst.sse.ui.internal.contentassist.ContentAssistUtils;
 import org.w3c.dom.Node;

 public abstract class AbstractEventHandlerDialog {
 	public enum Operation {
 		Cancel, New, Select, Rename;
 	};

 	protected Operation operation = Operation.Cancel;
 	protected String inputHandler = "";
 	protected String oldHandler;
 	protected String attrValue;
 	protected String[] handlers;
 	protected StructuredTextViewer textViewer;
 	protected int count;

 	public AbstractEventHandlerDialog(StructuredTextViewer textViewer, String oldHandler, String attrValue, String[] handlers) {
 		this.textViewer = textViewer;
 		this.oldHandler = oldHandler;
 		this.attrValue = attrValue;
 		this.handlers = handlers;

 	}

 	public void run(Shell parentShell, String title, Point position) {
 		Shell shell = new Shell(parentShell, SWT.NONE);
 		shell.setText(title);
 		createContents(shell);
 		shell.setLocation(position);
 		shell.pack();
 		shell.open();
 		while (!shell.isDisposed()) {
 			if (!shell.getDisplay().readAndDispatch()) {
 				shell.getDisplay().sleep();
 			}
 		}
 	}

 	private void createContents(final Shell shell) {
 		shell.setLayout(new GridLayout(2, false));
 		Group group = new Group(shell, SWT.LEFT);
 		group.setText("Handler Operations");
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		group.setLayoutData(data);
 		GridLayout gridLayout = new GridLayout();
 		group.setLayout(gridLayout);

 		final Button rbt1 = new Button(group, SWT.RADIO);
 		rbt1.setText("New Handler");
 		rbt1.setSelection(true);
 		GridData gridData1 = new GridData(GridData.FILL_HORIZONTAL);
 		gridData1.horizontalSpan = 2;
 		rbt1.setLayoutData(gridData1);
 		RBSelectionAdapter rbSelectionAdapter1 = new RBSelectionAdapter(1);
 		rbt1.addSelectionListener(rbSelectionAdapter1);
 		rbt1.setToolTipText("New Handler");
 		rbt1.setForeground(rbt1.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));

 		final Button rbt2 = new Button(group, SWT.RADIO);
 		rbt2.setText("Rename Handler");
 		GridData gridData2 = new GridData(GridData.FILL_HORIZONTAL);
 		gridData2.horizontalSpan = 2;
 		rbt2.setLayoutData(gridData2);
 		RBSelectionAdapter rbSelectionAdapter2 = new RBSelectionAdapter(2);
 		rbt2.addSelectionListener(rbSelectionAdapter2);
 		rbt2.setToolTipText("Rename Handler");
 		rbt2.setForeground(rbt2.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));
 		rbt2.setEnabled(oldHandler != null && oldHandler.length() > 0);

 		final Button rbt3 = new Button(group, SWT.RADIO);
 		rbt3.setText("Select Existing Handler");
 		GridData gridData3 = new GridData(GridData.FILL_HORIZONTAL);
 		gridData3.horizontalSpan = 2;
 		rbt3.setLayoutData(gridData3);
 		RBSelectionAdapter rbSelectionAdapter3 = new RBSelectionAdapter(3);
 		rbt3.addSelectionListener(rbSelectionAdapter3);
 		rbt3.setToolTipText("Select an existing handler");
 		rbt3.setForeground(rbt3.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));
 		rbt3.setEnabled(handlers != null && handlers.length > 0);

 		Label hNameLabel = new Label(shell, SWT.LEFT);
 		hNameLabel.setText("Handler Name");
 		final Text nameText = new Text(shell, SWT.BORDER);
 		nameText.setText(attrValue);
 		GridData gridData4 = new GridData();
 		gridData4.widthHint = 100;
 		nameText.setLayoutData(gridData4);
 		rbSelectionAdapter1.setText(nameText);
 		rbSelectionAdapter2.setText(nameText);
 		rbSelectionAdapter3.setText(nameText);

 		Label selectHandlerLabel = new Label(shell, SWT.LEFT);
 		selectHandlerLabel.setText("Select handler");
 		GridData gridData5 = new GridData(GridData.FILL_HORIZONTAL);
 		selectHandlerLabel.setLayoutData(gridData5);
 		final Combo handlersCombo = new Combo(shell, SWT.DROP_DOWN | SWT.READ_ONLY);
 		if (handlers != null && handlers.length != 0) {
 			handlersCombo.setItems(handlers);
 			handlersCombo.setText(handlers[0]);
 		}
 		handlersCombo.setEnabled(false);
 		GridData gridData6 = new GridData(GridData.FILL_HORIZONTAL);
 		gridData6.horizontalAlignment = SWT.LEFT;
 		handlersCombo.setLayoutData(gridData6);
 		rbSelectionAdapter1.setCombo(handlersCombo);
 		rbSelectionAdapter2.setCombo(handlersCombo);
 		rbSelectionAdapter3.setCombo(handlersCombo);

 		Button okButton = new Button(shell, SWT.PUSH | SWT.CR);
 		okButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				boolean exists = false;
 				if (!rbt3.getSelection()) {
 					if (nameText.getText().trim().equals("")) {
 						MessageDialog.openInformation(shell, "Dialog", "Handler Name is null");
 						nameText.forceFocus();
 						return;
 					}

 					exists = handlerExists(nameText.getText(), handlers);
 					if (exists) {
 						int length = nameText.getText().length();
 						nameText.setSelection(0, length);
 						nameText.forceFocus();
 						return;
 					}
 				}
 				if (rbt1.getSelection()) {
 					operation = Operation.New;
 					inputHandler = nameText.getText();
 				} else if (rbt2.getSelection()) {
 					inputHandler = nameText.getText();
 					Node rootNode = (Node) ContentAssistUtils.getNodeAt(textViewer, 0);
 					count = 0;
 					boolean usedByOther = usedByOther(rootNode, oldHandler);
 					if (usedByOther) {
 						String message = NLS.bind("Refactor", oldHandler);
 						boolean confirm = MessageDialog.openConfirm(shell, "Dialog", message);
 						if (!confirm) {
 							int length = nameText.getText().length();
 							nameText.setSelection(0, length);
 							nameText.forceFocus();
 							return;
 						}
 					}
 					operation = Operation.Rename;
 				} else if (rbt3.getSelection()) {
 					operation = Operation.Select;
 					inputHandler = handlersCombo.getText();
 				}

 				if (exists == false) {
 					shell.dispose();
 				}
 			}

 			private boolean handlerExists(String handlerName, String[] handlers) {
 				for (int i = 0; i < handlers.length; i++) {
 					if (handlerName != null && handlerName.equals(handlers[i])) {
 						MessageDialog.openInformation(shell, "Dialog", "Handler is existed.");
 						return true;
 					}
 				}
 				return false;
 			}
 		});
 		okButton.setText("OK");
 		GridData okData = new GridData();
 		okData.horizontalAlignment = GridData.CENTER;
 		okButton.setLayoutData(okData);

 		Button cancelButton = new Button(shell, SWT.PUSH);
 		cancelButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				shell.dispose();
 			}
 		});
 		cancelButton.setText("Cancel");
 		GridData cancelData = new GridData();
 		cancelData.horizontalAlignment = GridData.CENTER;
 		cancelData.grabExcessHorizontalSpace = true;
 		shell.setDefaultButton(okButton);
 	}

 	public Operation getOperation() {
 		return operation;
 	}

 	public String getInputHandler() {
 		return inputHandler;
 	}

 	private static class RBSelectionAdapter extends SelectionAdapter {
 		private Text text;
 		private Combo combo;
 		private int number;

 		protected RBSelectionAdapter(int number) {
 			this.number = number;
 		}

 		public void widgetSelected(SelectionEvent e) {

 			if (number == 3) {
 				text.setEnabled(false);
 				combo.setEnabled(true);
 			} else {
 				text.setEnabled(true);
 				combo.setEnabled(false);
 			}
 		}

 		protected void setText(Text text) {
 			this.text = text;
 		}

 		protected void setCombo(Combo combo) {
 			this.combo = combo;
 		}
 	}

 	protected abstract boolean usedByOther(Node node, String oldHandler);
 }
	/*******************************************************************************
	* Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) 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:
	* Soyatec - initial API and implementation
	*******************************************************************************/
	package org.eclipse.xwt.tools.ui.designer.dialogs;

	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Point;
	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.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.wst.sse.ui.internal.StructuredTextViewer;
	import org.eclipse.wst.sse.ui.internal.contentassist.ContentAssistUtils;
	import org.w3c.dom.Node;

	public abstract class AbstractEventHandlerDialog {
	public enum Operation {
	Cancel, New, Select, Rename;
	};

	protected Operation operation = Operation.Cancel;
	protected String inputHandler = "";
	protected String oldHandler;
	protected String attrValue;
	protected String[] handlers;
	protected StructuredTextViewer textViewer;
	protected int count;

	public AbstractEventHandlerDialog(StructuredTextViewer textViewer, String oldHandler, String attrValue, String[] handlers) {
	this.textViewer = textViewer;
	this.oldHandler = oldHandler;
	this.attrValue = attrValue;
	this.handlers = handlers;

	}

	public void run(Shell parentShell, String title, Point position) {
	Shell shell = new Shell(parentShell, SWT.NONE);
	shell.setText(title);
	createContents(shell);
	shell.setLocation(position);
	shell.pack();
	shell.open();
	while (!shell.isDisposed()) {
	if (!shell.getDisplay().readAndDispatch()) {
	shell.getDisplay().sleep();
	}
	}
	}

	private void createContents(final Shell shell) {
	shell.setLayout(new GridLayout(2, false));
	Group group = new Group(shell, SWT.LEFT);
	group.setText("Handler Operations");
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	group.setLayoutData(data);
	GridLayout gridLayout = new GridLayout();
	group.setLayout(gridLayout);

	final Button rbt1 = new Button(group, SWT.RADIO);
	rbt1.setText("New Handler");
	rbt1.setSelection(true);
	GridData gridData1 = new GridData(GridData.FILL_HORIZONTAL);
	gridData1.horizontalSpan = 2;
	rbt1.setLayoutData(gridData1);
	RBSelectionAdapter rbSelectionAdapter1 = new RBSelectionAdapter(1);
	rbt1.addSelectionListener(rbSelectionAdapter1);
	rbt1.setToolTipText("New Handler");
	rbt1.setForeground(rbt1.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));

	final Button rbt2 = new Button(group, SWT.RADIO);
	rbt2.setText("Rename Handler");
	GridData gridData2 = new GridData(GridData.FILL_HORIZONTAL);
	gridData2.horizontalSpan = 2;
	rbt2.setLayoutData(gridData2);
	RBSelectionAdapter rbSelectionAdapter2 = new RBSelectionAdapter(2);
	rbt2.addSelectionListener(rbSelectionAdapter2);
	rbt2.setToolTipText("Rename Handler");
	rbt2.setForeground(rbt2.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));
	rbt2.setEnabled(oldHandler != null && oldHandler.length() > 0);

	final Button rbt3 = new Button(group, SWT.RADIO);
	rbt3.setText("Select Existing Handler");
	GridData gridData3 = new GridData(GridData.FILL_HORIZONTAL);
	gridData3.horizontalSpan = 2;
	rbt3.setLayoutData(gridData3);
	RBSelectionAdapter rbSelectionAdapter3 = new RBSelectionAdapter(3);
	rbt3.addSelectionListener(rbSelectionAdapter3);
	rbt3.setToolTipText("Select an existing handler");
	rbt3.setForeground(rbt3.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE));
	rbt3.setEnabled(handlers != null && handlers.length > 0);

	Label hNameLabel = new Label(shell, SWT.LEFT);
	hNameLabel.setText("Handler Name");
	final Text nameText = new Text(shell, SWT.BORDER);
	nameText.setText(attrValue);
	GridData gridData4 = new GridData();
	gridData4.widthHint = 100;
	nameText.setLayoutData(gridData4);
	rbSelectionAdapter1.setText(nameText);
	rbSelectionAdapter2.setText(nameText);
	rbSelectionAdapter3.setText(nameText);

	Label selectHandlerLabel = new Label(shell, SWT.LEFT);
	selectHandlerLabel.setText("Select handler");
	GridData gridData5 = new GridData(GridData.FILL_HORIZONTAL);
	selectHandlerLabel.setLayoutData(gridData5);
	final Combo handlersCombo = new Combo(shell, SWT.DROP_DOWN \| SWT.READ_ONLY);
	if (handlers != null && handlers.length != 0) {
	handlersCombo.setItems(handlers);
	handlersCombo.setText(handlers[0]);
	}
	handlersCombo.setEnabled(false);
	GridData gridData6 = new GridData(GridData.FILL_HORIZONTAL);
	gridData6.horizontalAlignment = SWT.LEFT;
	handlersCombo.setLayoutData(gridData6);
	rbSelectionAdapter1.setCombo(handlersCombo);
	rbSelectionAdapter2.setCombo(handlersCombo);
	rbSelectionAdapter3.setCombo(handlersCombo);

	Button okButton = new Button(shell, SWT.PUSH \| SWT.CR);
	okButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	boolean exists = false;
	if (!rbt3.getSelection()) {
	if (nameText.getText().trim().equals("")) {
	MessageDialog.openInformation(shell, "Dialog", "Handler Name is null");
	nameText.forceFocus();
	return;
	}

	exists = handlerExists(nameText.getText(), handlers);
	if (exists) {
	int length = nameText.getText().length();
	nameText.setSelection(0, length);
	nameText.forceFocus();
	return;
	}
	}
	if (rbt1.getSelection()) {
	operation = Operation.New;
	inputHandler = nameText.getText();
	} else if (rbt2.getSelection()) {
	inputHandler = nameText.getText();
	Node rootNode = (Node) ContentAssistUtils.getNodeAt(textViewer, 0);
	count = 0;
	boolean usedByOther = usedByOther(rootNode, oldHandler);
	if (usedByOther) {
	String message = NLS.bind("Refactor", oldHandler);
	boolean confirm = MessageDialog.openConfirm(shell, "Dialog", message);
	if (!confirm) {
	int length = nameText.getText().length();
	nameText.setSelection(0, length);
	nameText.forceFocus();
	return;
	}
	}
	operation = Operation.Rename;
	} else if (rbt3.getSelection()) {
	operation = Operation.Select;
	inputHandler = handlersCombo.getText();
	}

	if (exists == false) {
	shell.dispose();
	}
	}

	private boolean handlerExists(String handlerName, String[] handlers) {
	for (int i = 0; i < handlers.length; i++) {
	if (handlerName != null && handlerName.equals(handlers[i])) {
	MessageDialog.openInformation(shell, "Dialog", "Handler is existed.");
	return true;
	}
	}
	return false;
	}
	});
	okButton.setText("OK");
	GridData okData = new GridData();
	okData.horizontalAlignment = GridData.CENTER;
	okButton.setLayoutData(okData);

	Button cancelButton = new Button(shell, SWT.PUSH);
	cancelButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	shell.dispose();
	}
	});
	cancelButton.setText("Cancel");
	GridData cancelData = new GridData();
	cancelData.horizontalAlignment = GridData.CENTER;
	cancelData.grabExcessHorizontalSpace = true;
	shell.setDefaultButton(okButton);
	}

	public Operation getOperation() {
	return operation;
	}

	public String getInputHandler() {
	return inputHandler;
	}

	private static class RBSelectionAdapter extends SelectionAdapter {
	private Text text;
	private Combo combo;
	private int number;

	protected RBSelectionAdapter(int number) {
	this.number = number;
	}

	public void widgetSelected(SelectionEvent e) {

	if (number == 3) {
	text.setEnabled(false);
	combo.setEnabled(true);
	} else {
	text.setEnabled(true);
	combo.setEnabled(false);
	}
	}

	protected void setText(Text text) {
	this.text = text;
	}

	protected void setCombo(Combo combo) {
	this.combo = combo;
	}
	}

	protected abstract boolean usedByOther(Node node, String oldHandler);
	}