/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2001 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.extbrowser;

import org.openide.awt.HtmlBrowser;
import org.openide.execution.NbProcessDescriptor;
import org.openide.util.NbBundle;
import org.openide.util.Utilities;

/**
 * Browser factory for System default Win browser.
 *
 * @author Martin Grebac
 */
public class SystemDefaultBrowser extends ExtWebBrowser {

    private static final long serialVersionUID = -7317179197254112564L;
    
    /** Determines whether the browser should be visible or not
     *  @return true when OS is Windows.
     *          false in all other cases.
     */
    public static Boolean isHidden () {
        return !org.openide.util.Utilities.isWindows () ? Boolean.TRUE : Boolean.FALSE;
    }
    
    /** Creates new ExtWebBrowser */
    public SystemDefaultBrowser() {
    }

    /**
     * Returns a new instance of BrowserImpl implementation.
     * @throws UnsupportedOperationException when method is called and OS is not Windows.
     * @return browserImpl implementation of browser.
     */
    public HtmlBrowser.Impl createHtmlBrowserImpl() {
        ExtBrowserImpl impl = null;

        if (org.openide.util.Utilities.isWindows ()) {
            impl = new NbDdeBrowserImpl(this);
        } else {
            throw new UnsupportedOperationException (NbBundle.getMessage (SystemDefaultBrowser.class, "MSG_CannotUseBrowser"));
        }
        
        return impl;
    }
    
    /** Getter for browser name
     *  @return name of browser
     */
    public String getName () {
        if (name == null) {
            this.name = NbBundle.getMessage(SystemDefaultBrowser.class, "CTL_SystemDefaultBrowserName");
        }
        return name;
    }
    
    /** Setter for browser name
     */
    public void setName(String name) {
        // system default browser name shouldn't be changed
    }

    /** Default command for browser execution.
     * Can be overriden to return browser that suits to platform and settings.
     *
     * @return process descriptor that allows to start browser.
     */
    protected NbProcessDescriptor defaultBrowserExecutable () {
        String b;
        String params = "";     // NOI18N
        try {
            // finds HKEY_CLASSES_ROOT\\".html" and respective HKEY_CLASSES_ROOT\\\\shell\\open\\command
            // we will ignore all params here
            b = NbDdeBrowserImpl.getDefaultOpenCommand ();
            String [] args = Utilities.parseParameters (b);

            if (args == null || args.length == 0) {
                throw new NbBrowserException ();
            }
            b = args[0];
            params += " {" + ExtWebBrowser.UnixBrowserFormat.TAG_URL + "}";
        } catch (NbBrowserException e) {
            b = "";             // NOI18N
        } catch (UnsatisfiedLinkError e) {
            // someone is customizing this on non-Win platform
            b = "iexplore";     // NOI18N
        }

        NbProcessDescriptor p = new NbProcessDescriptor (b, params);
        return p;
    }

}