/*******************************************************************************
 * Copyright (c) 2014, 2015 Cisco Systems, Inc. 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
 *  
 *******************************************************************************/
package com.cisco.yangide.ui;

import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
public class YangUIPlugin extends AbstractUIPlugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "com.cisco.yangide.ui"; //$NON-NLS-1$

    // The shared instance
    private static YangUIPlugin plugin;

    /**
     * The constructor
     */
    public YangUIPlugin() {
    }

    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
        plugin = this;
    }

    @Override
    public void stop(BundleContext context) throws Exception {
        plugin = null;
        super.stop(context);
    }

    /**
     * Returns the shared instance
     *
     * @return the shared instance
     */
    public static YangUIPlugin getDefault() {
        return plugin;
    }

    public static IWorkspace getWorkspace() {
        return ResourcesPlugin.getWorkspace();
    }

    public static IWorkbenchPage getActivePage() {
        IWorkbenchWindow window = getDefault().getWorkbench().getActiveWorkbenchWindow();
        if (window == null) {
            return null;
        }
        return window.getActivePage();
    }

    public static IWorkbenchWindow getActiveWorkbenchWindow() {
        return getDefault().getWorkbench().getActiveWorkbenchWindow();
    }

    public static Shell getActiveWorkbenchShell() {
        IWorkbenchWindow window = getActiveWorkbenchWindow();
        if (window != null) {
            return window.getShell();
        }
        return null;
    }

    public static void log(String message, Throwable e) {
        log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.ERROR, message, e));
    }

    public static void log(int statusErrorID, String message) {
        log(new Status(statusErrorID, PLUGIN_ID, message));
    }

    /*
     * Add a log entry
     */
    public static void log(IStatus status) {
        getDefault().getLog().log(status);
    }

    public static void log(Throwable e) {
        log(new Status(IStatus.ERROR, PLUGIN_ID, e.getMessage(), e));
    }

    /**
     * Returns the standard display to be used. The method first checks, if the thread calling this
     * method has an associated display. If so, this display is returned. Otherwise the method
     * returns the default display.
     */
    public static Display getStandardDisplay() {
        Display display = Display.getCurrent();
        if (display == null) {
            display = Display.getDefault();
        }
        return display;
    }

    /**
     * Configurable option value: {@value} .
     *
     * @category OptionValue
     */
    public static final String TAB = "tab"; //$NON-NLS-1$
    /**
     * Configurable option value: {@value} .
     *
     * @category OptionValue
     */
    public static final String SPACE = "space"; //$NON-NLS-1$

}