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/*******************************************************************************
* Copyright (c) 2006 CEA List.
* 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:
* CEA List - initial API and implementation
*******************************************************************************/
package org.eclipse.papyrus.extensionpoints.editors.ui;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.papyrus.extensionpoints.editors.Activator;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
// equivalent au inputDialog (code recopie) mais donne un sourceviewer a la place du label
/**
*
*/
public class LabelEditorDialog extends Dialog implements ILabelEditorDialog {
/**
* The title of the dialog.
*/
protected String title;
/**
* The input value; the empty string by default.
*/
protected String value = "";//$NON-NLS-1$
/**
* The input validator, or <code>null</code> if none.
*/
protected IInputValidator validator;
/**
* Ok button widget.
*/
protected Button okButton;
/**
* Error message label widget.
*/
protected CLabel errorMessageText;
/**
* Error message string.
*/
protected String errorMessage;
/**
* SourceViewer : area that displays text.
*/
protected SourceViewer viewer;
/**
* Creates a dialog with OK and Cancel buttons. Note that the dialog will have no visual
* representation (no widgets) until it is told to open.
* <p>
* Note that the <code>open</code> method blocks for input dialogs.
* </p>
*
* @param dialogTitle
* the dialog title, or <code>null</code> if none
* @param validator
* an input validator, or <code>null</code> if none
* @param parentShell
* the parent shell, or <code>null</code> to create a top-level shell
* @param initialValue
* the initial input value, or <code>null</code> if none (equivalent to the empty
* string)
*/
public LabelEditorDialog(Shell parentShell, String dialogTitle, String initialValue, IInputValidator validator) {
super(parentShell);
this.title = dialogTitle;
if (initialValue == null) {
value = "";//$NON-NLS-1$
} else {
value = initialValue;
}
this.validator = validator;
}
/*
* (non-Javadoc) Method declared on Dialog.
*/
/**
*
*
* @param buttonId
*/
@Override
protected void buttonPressed(int buttonId) {
if (buttonId == IDialogConstants.OK_ID) {
value = viewer.getDocument().get();
} else {
value = null;
}
super.buttonPressed(buttonId);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets .Shell)
*/
/**
*
*
* @param shell
*/
@Override
protected void configureShell(Shell shell) {
super.configureShell(shell);
if (title != null) {
shell.setText(title);
}
}
/**
* Returns the ok button.
*
* @return the ok button
*/
// @unused
protected Button getOkButton() {
return okButton;
}
/**
* Returns the text area.
*
* @return the text area
*/
// @unused
protected SourceViewer getSourceViewer() {
return viewer;
}
/**
* Returns the validator.
*
* @return the validator
*/
// @unused
protected IInputValidator getValidator() {
return validator;
}
/**
* Returns the string typed into this input dialog.
*
* @return the input string
*/
public String getValue() {
return value;
}
/**
* Validates the input.
* <p>
* The default implementation of this framework method delegates the request to the supplied input validator object; if it finds the input invalid, the error message is displayed in the dialog's message line. This hook method is called whenever the text
* changes in the input field.
* </p>
*/
protected void validateInput() {
String errorMessage = null;
if (validator != null) {
errorMessage = validator.isValid(viewer.getDocument().get());
}
// Bug 16256: important not to treat "" (blank error) the same as null
// (no error)
setErrorMessage(errorMessage);
}
/**
* Sets or clears the error message. If not <code>null</code>, the OK button is disabled.
*
* @param errorMessage
* the error message, or <code>null</code> to clear
*
* @since 3.0
*/
public void setErrorMessage(String errorMessage) {
this.errorMessage = errorMessage;
if ((errorMessageText != null) && !errorMessageText.isDisposed()) {
Image errorImage = Activator.getImage("icons/error.gif");
errorMessageText.setImage(errorMessage == null ? null : errorImage);
errorMessageText.setText(errorMessage == null ? "" : errorMessage); //$NON-NLS-1$
errorMessageText.getParent().update();
// Access the ok button by id, in case clients have overridden
// button creation.
// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643
Control button = getButton(IDialogConstants.OK_ID);
if (button != null) {
button.setEnabled(errorMessage == null);
}
}
}
}
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