com.trivadis.loganalysis.ui.internal.Perspective.java Source code

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Here is the source code for com.trivadis.loganalysis.ui.internal.Perspective.java

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/**
 * Copyright (c) 2011 Loganalysis team and contributors
 *
 * 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:
 *   Raffael Schmid - initial API and implementation
 */
package com.trivadis.loganalysis.ui.internal;

import static org.eclipse.jface.dialogs.MessageDialogWithToggle.openYesNoQuestion;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialogWithToggle;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.WorkbenchException;

public class Perspective {

    private enum Selection {
        PROMPT, ALWAYS, NEVER;
    }

    public static void updateWithNotification(String key, String title, String message, String perspectiveId) {
        if (isPerspectiveNotYetOpen(perspectiveId) && shouldSwitchPerspective(key, title, message))
            update(perspectiveId);
    }

    private static boolean isPerspectiveNotYetOpen(String perspectiveId) {
        return !perspectiveId.equals(
                PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getPerspective().getId());
    }

    private static boolean shouldSwitchPerspective(String key, String title, String message) {
        IPreferenceStore store = Activator.getDefault().getPreferenceStore();
        String preference = store.getString(key);
        Selection guard = (preference != null && !preference.equals("")) ? Selection.valueOf(preference)
                : Selection.PROMPT;
        if (Selection.PROMPT.equals(guard)) {
            MessageDialogWithToggle dialog = openYesNoQuestion(
                    PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), title, message, null, false,
                    store, key);
            guard = getConfirmCancel(dialog);
            if (dialog.getToggleState()) {
                saveSetting(key, guard);
            }
        }

        return guard.equals(Selection.ALWAYS);
    }

    private static Selection getConfirmCancel(MessageDialogWithToggle dialog) {
        return (dialog.getReturnCode() == IDialogConstants.YES_ID) ? Selection.ALWAYS : Selection.NEVER;
    }

    private static void saveSetting(String key, Selection guard) {
        IPreferenceStore store = Activator.getDefault().getPreferenceStore();
        store.setValue(key, guard.toString());
    }

    public static void update(String perspectiveId) {
        try {
            PlatformUI.getWorkbench().showPerspective(perspectiveId,
                    PlatformUI.getWorkbench().getActiveWorkbenchWindow());
        } catch (WorkbenchException e) {
            throw new RuntimeException(e);
        }
    }
}