//
//  Copyright (c) 2013 Stefan Bolte <portix@gmx.net>
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 3 of the License, or
//  (at your option) any later version.
//  
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//  
//  You should have received a copy of the GNU General Public License along
//  with this program; if not, write to the Free Software Foundation, Inc.,
//  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
//

/*<INFO
Remove duplicate tabs or avoid duplicate tabs by autoswitching to tabs with same url
INFO>*/

var defaultConfig = {
//<DEFAULT_CONFIG
// Shortcut that removes duplicate tabs
shortcutRemoveDuplicates : null,

// Command that removes duplicate tabs
commandRemoveDuplicates : "ut_remove_duplicates",

// Autofocus a tab if an url is already opened, if the url would be loaded in a
// new tab the new tab is closed. 
// Setting this to true makes commandRemoveDuplicates and
// shortcutRemoveDuplicates obsolete because there will be no duplicates. 
autoFocus : true,

// Shortcut for toggling autofocus
shortcutToggleAutoFocus : null, 

// Command for toggling autofocus
commandToggleAutoFocus : "ut_toggle_autofocus", 

//>DEFAULT_CONFIG
};

var signalId = -1;

var removeDuplicates = function() 
{
    var uris = [];
    for (var i=tabs.length-1; i>=0; --i)
    {
        var uri = tabs.nth(i).uri;
        if (uris.fastIndexOf(uri) == -1)
            uris.push(uri);
        else 
            execute((i+1) + "close_tab");
    }
};
var onNavigation = function(wv, frame, request) 
{
    var uri = request.uri;
    for (var i=tabs.length-1; i>=0; --i)
    {
        if (tabs.nth(i).uri == uri && i != wv.number) 
        {
            execute((i+1) + "focus_tab");
            if (/^\s*$/.test(wv.uri))
                execute((wv.number + 1) + "close");
            return true;
        }
    }
    return false;
};
var connectAutoFocus = function()
{
    signalId = signals.connect("navigation", onNavigation);
};
var disconnectAutoFocus = function()
{
    if (signalId != -1)
    {
        signals.disconnect(signalId);
        signalId = -1;
        return true;
    }
    return false;
};
var toggleAutoFocus = function()
{
    if (disconnectAutoFocus())
        io.notify("unique_tabs: autofocus disabled");
    else 
    {
        io.notify("unique_tabs: autofocus enabled");
        connectAutoFocus();
    }
};

return {
    defaultConfig : defaultConfig, 
    init : function(c) {
        if (c.shortcutRemoveDuplicates || c.commandRemoveDuplicates)
        {
            bind(c.shortcutRemoveDuplicates, removeDuplicates, c.commandRemoveDuplicates);
        }
        if (c.shortcutToggleAutoFocus || c.commandToggleAutoFocus)
        {
            bind(c.shortcutToggleAutoFocus, toggleAutoFocus, c.commandToggleAutoFocus);
        }

        if (c.autoFocus)
            connectAutoFocus();
        return true;
    }, 
    end : function() {
        unbind(removeDuplicates);
        unbind(toggleAutoFocus);
        disconnectAutoFocus();
        return true;
    }
}

// vim:set ft=javascript: