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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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package com.symbian.smt.gui.smtwidgets;
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import org.eclipse.jface.dialogs.IDialogConstants;
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import org.eclipse.jface.dialogs.InputDialog;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.widgets.Shell;
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/**
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* This specialisation of the InputDialog class is equipped to handle warnings
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* as well as errors in user input. Warnings are messages that need to be
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* displayed in the dialog but do not require disablement of buttons.
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* <p>
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* This dialog makes use of the specialised validator interface
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* IInputValidatorWithWarning.
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* </p>
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*
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* @author barbararosi-schwartz
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* @see com.symbian.smt.gui.smtwidgets.IInputValidatorWithWarning
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*/
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public class InputDialogWithWarning extends InputDialog {
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/**
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* The object that handles validation
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*/
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private IInputValidatorWithWarning validator;
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public InputDialogWithWarning(Shell parentShell, String dialogTitle,
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String dialogMessage, String initialValue,
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IInputValidatorWithWarning validator) {
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super(parentShell, dialogTitle, dialogMessage, initialValue, validator);
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this.validator = validator;
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}
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/**
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* After invoking the superclass <code>setErrorMessage()</code> method, this
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* method ensures that the dialog's OK button, if present, is enabled.
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* <p>
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* The warning message will be automatically presented by the superclass.
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* </p>
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*
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* @param warningMessage
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* the warning message, or <code>null</code> if no warning is
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* required
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*/
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public void setWarningMessage(String warningMessage) {
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super.setErrorMessage(warningMessage);
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Control button = getButton(IDialogConstants.OK_ID);
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if (button != null) {
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button.setEnabled(true);
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}
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}
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/**
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* Validates the input.
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* <p>
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* Delegates the request to the supplied input validator object.
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* </p>
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* <p>
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* If it finds the input invalid, the error message is displayed in the
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* dialog's message line and the dialog's OK button is disabled.
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* </p>
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* <p>
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* If it finds the input valid (i.e. no error), it checks with the validator
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* if the input requires a warning message and, if so, the warning message
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* is displayed in the dialog's message line but no disabling of the button
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* occurs.
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* </p>
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* <p>
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* This hook method is called whenever the text changes in the input field.
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* </p>
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*/
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@Override
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protected void validateInput() {
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String errorMessage = null;
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String warningMessage = null;
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if (validator != null) {
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String newText = getText().getText();
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errorMessage = validator.isValid(newText);
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if (errorMessage == null) {
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warningMessage = validator.isWarning(newText);
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setWarningMessage(warningMessage);
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} else {
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setErrorMessage(errorMessage);
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}
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}
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}
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}
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