net.sf.eclipsefp.haskell.ui.dialog.ValidatorManager.java Source code

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Here is the source code for net.sf.eclipsefp.haskell.ui.dialog.ValidatorManager.java

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/**
 * Copyright (c) 2012 by JP Moresmau
 * This code is made available under the terms of the Eclipse Public License,
 * version 1.0 (EPL). See http://www.eclipse.org/legal/epl-v10.html
 */
package net.sf.eclipsefp.haskell.ui.dialog;

import java.util.ArrayList;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.wizard.WizardPage;

/**
 * Manager of validators
 * @author JP Moresmau
 *
 */
public final class ValidatorManager {

    private final WizardPage fWizardPage;

    private final ArrayList<Validator> validators = new ArrayList<>();

    public ValidatorManager(final WizardPage wizardPage) {
        fWizardPage = wizardPage;
    }

    public void addValidator(final Validator validator) {
        validators.add(validator);
    }

    public void updatePage() {
        String message = null;
        int status = IMessageProvider.NONE;
        boolean pageComplete = true;
        for (Validator validator : validators) {
            if (message == null && validator.getMessage() != null) {
                message = validator.getMessage();
            }
            if (validator.getStatus() > status) {
                status = validator.getStatus();
                if (validator.getMessage() != null) {
                    message = validator.getMessage();
                }
            }

            if (pageComplete && !validator.isPageComplete()) {
                pageComplete = false;
            }
        }
        fWizardPage.setMessage(message, status);
        fWizardPage.setPageComplete(pageComplete);
    }

    public void fullUpdate() {
        for (Validator validator : validators) {
            validator.update();
        }
        updatePage();
    }

}