// MenuCreator.cc for Fluxbox
// Copyright (c) 2004 Henrik Kinnunen (fluxgen at users.sourceforge.net)
//                and Simon Bowden    (rathnor at users.sourceforge.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// $Id$

#include "MenuCreator.hh"

#include "Screen.hh"
#include "CommandParser.hh"
#include "fluxbox.hh"
#include "CommandParser.hh"
#include "Window.hh"

#include "FbMenu.hh"
#include "IconMenu.hh"
#include "WorkspaceMenu.hh"
#include "LayerMenu.hh"
#include "SendToMenu.hh"

#include "FbMenuParser.hh"
#include "StyleMenuItem.hh"
#include "RootCmdMenuItem.hh"

#include "FbTk/I18n.hh"
#include "FbTk/MultiButtonMenuItem.hh"
#include "FbTk/RefCount.hh"
#include "FbTk/MacroCommand.hh"
#include "FbTk/SimpleCommand.hh"
#include "FbTk/StringUtil.hh"
#include "FbTk/Directory.hh"
#include "FbTk/MenuSeparator.hh"
#include "FbTk/MenuIcon.hh"

#include <iostream>
using namespace std;

template <>
void LayerMenuItem<FluxboxWindow>::click(int button, int time) {
    m_object->moveToLayer(m_layernum);
}

static void createStyleMenu(FbTk::Menu &parent, const std::string &label, 
                                   const std::string &directory) {
    // perform shell style ~ home directory expansion
    string stylesdir(FbTk::StringUtil::expandFilename(directory));

    if (!FbTk::Directory::isDirectory(stylesdir))
        return;

    FbTk::Directory dir(stylesdir.c_str());

    // create a vector of all the filenames in the directory
    // add sort it
    std::vector<std::string> filelist(dir.entries());
    for (size_t file_index = 0; file_index < dir.entries(); ++file_index)
        filelist[file_index] = dir.readFilename();

    std::sort(filelist.begin(), filelist.end(), less<string>());

    // for each file in directory add filename and path to menu
    for (size_t file_index = 0; file_index < dir.entries(); file_index++) {
        std::string style(stylesdir + '/' + filelist[file_index]);
        // add to menu only if the file is a regular file, and not a
        // .file or a backup~ file
        if ((FbTk::Directory::isRegularFile(style) &&
             (filelist[file_index][0] != '.') &&
             (style[style.length() - 1] != '~')) ||
            FbTk::Directory::isRegularFile(style + "/theme.cfg") ||
            FbTk::Directory::isRegularFile(style + "/style.cfg"))
            parent.insert(new StyleMenuItem(filelist[file_index], style));
    } 
    // update menu graphics
    parent.update();
    Fluxbox::instance()->saveMenuFilename(stylesdir.c_str());

}

static void createRootCmdMenu(FbTk::Menu &parent, const string &label, 
                                const string &directory, const string &cmd) {
    // perform shell style ~ home directory expansion
    string rootcmddir(FbTk::StringUtil::expandFilename(directory));

    if (!FbTk::Directory::isDirectory(rootcmddir))
        return;

    FbTk::Directory dir(rootcmddir.c_str());

    // create a vector of all the filenames in the directory
    // add sort it
    vector<string> filelist(dir.entries());
    for (size_t file_index = 0; file_index < dir.entries(); ++file_index)
        filelist[file_index] = dir.readFilename();

    sort(filelist.begin(), filelist.end(), less<string>());

    // for each file in directory add filename and path to menu
    for (size_t file_index = 0; file_index < dir.entries(); file_index++) {
        
        string rootcmd(rootcmddir+ '/' + filelist[file_index]);
        // add to menu only if the file is a regular file, and not a
        // .file or a backup~ file
        if ((FbTk::Directory::isRegularFile(rootcmd) &&
             (filelist[file_index][0] != '.') &&
             (rootcmd[rootcmd.length() - 1] != '~'))) 
            parent.insert(new RootCmdMenuItem(filelist[file_index], rootcmd, cmd));
    }
    // update menu graphics
    parent.update();
    Fluxbox::instance()->saveMenuFilename(rootcmddir.c_str());

}


class ParseItem {
public:
    explicit ParseItem(FbTk::Menu *menu):m_menu(menu) {}

    inline void load(Parser &p) {
        p>>m_key>>m_label>>m_cmd>>m_icon;
    }
    inline const std::string &icon() const { return m_icon.second; }
    inline const std::string &command() const { return m_cmd.second; }
    inline const std::string &label() const { return m_label.second; }
    inline const std::string &key() const { return m_key.second; }
    inline FbTk::Menu *menu() { return m_menu; }
private:
    Parser::Item m_key, m_label, m_cmd, m_icon;
    FbTk::Menu *m_menu;
};


static void translateMenuItem(Parser &parse, ParseItem &item);


static void parseMenu(Parser &pars, FbTk::Menu &menu) {
    ParseItem pitem(&menu);
    while (!pars.eof()) {
        pitem.load(pars);
        if (pitem.key() == "end")
            return;
        translateMenuItem(pars, pitem);
    }
}

static void translateMenuItem(Parser &parse, ParseItem &pitem) {
    if (pitem.menu() == 0)
        throw string("translateMenuItem: We must have a menu in ParseItem!");

    FbTk::Menu &menu = *pitem.menu();
    const std::string &str_key = pitem.key();
    const std::string &str_cmd = pitem.command();
    const std::string &str_label = pitem.label();

    const int screen_number = menu.screenNumber();
    _FB_USES_NLS;
    
    if (str_key == "end") {
        return;
    } else if (str_key == "nop") { 
        menu.insert(str_label.c_str());
    } else if (str_key == "icons") {
        FbTk::Menu *submenu = MenuCreator::createMenuType("iconmenu", menu.screenNumber());
        if (submenu == 0)
            return;
        if (str_label.empty())
            menu.insert(_FBTEXT(Menu, Icons, "Icons", "Iconic windows menu title"));
        else
            menu.insert(str_label.c_str(), submenu);
    } else if (str_key == "exit") { // exit
        FbTk::RefCount<FbTk::Command> exit_cmd(CommandParser::instance().parseLine("exit"));
        if (str_label.empty())
            menu.insert(_FBTEXT(Menu, Exit, "Exit", "Exit Command"), exit_cmd);
        else
            menu.insert(str_label.c_str(), exit_cmd);
    } else if (str_key == "exec") {
        // execute and hide menu
        using namespace FbTk;
        RefCount<Command> exec_cmd(CommandParser::instance().parseLine("exec " + str_cmd));
        RefCount<Command> hide_menu(new SimpleCommand<FbTk::Menu>(menu, 
                                                                  &Menu::hide));
        MacroCommand *exec_and_hide = new FbTk::MacroCommand();
        exec_and_hide->add(hide_menu);
        exec_and_hide->add(exec_cmd);
        RefCount<Command> exec_and_hide_cmd(exec_and_hide);
        menu.insert(str_label.c_str(), exec_and_hide_cmd);
    } else if (str_key == "macrocmd") {
        using namespace FbTk;
        RefCount<Command> macro_cmd(CommandParser::instance().parseLine("macrocmd " + str_cmd));
        RefCount<Command> hide_menu(new SimpleCommand<FbTk::Menu>(menu, 
                                                                  &Menu::hide));
        MacroCommand *exec_and_hide = new FbTk::MacroCommand();
        exec_and_hide->add(hide_menu);
        exec_and_hide->add(macro_cmd);
        RefCount<Command> exec_and_hide_cmd(exec_and_hide);
        menu.insert(str_label.c_str(), exec_and_hide_cmd);
    } else if (str_key == "style") {	// style
        menu.insert(new StyleMenuItem(str_label, str_cmd));
    } else if (str_key == "config") {
        BScreen *screen = Fluxbox::instance()->findScreen(screen_number);
        if (screen != 0)
            menu.insert(str_label.c_str(), &screen->configMenu());
    } // end of config                
    else if (str_key == "include") { // include

        // this will make sure we dont get stuck in a loop
        static size_t safe_counter = 0;
        if (safe_counter > 10)
            return;

        safe_counter++;

        string newfile = FbTk::StringUtil::expandFilename(str_label);
        if (FbTk::Directory::isDirectory(newfile)) {
            // inject every file in this directory into the current menu
            FbTk::Directory dir(newfile.c_str());

            std::vector<std::string> filelist(dir.entries());
            for (size_t file_index = 0; file_index < dir.entries(); ++file_index)
                filelist[file_index] = dir.readFilename();
            std::sort(filelist.begin(), filelist.end(), less<string>());

            for (size_t file_index = 0; file_index < dir.entries(); file_index++) {
                std::string thisfile(newfile + '/' + filelist[file_index]);

                if (FbTk::Directory::isRegularFile(thisfile) &&
                        (filelist[file_index][0] != '.') &&
                        (thisfile[thisfile.length() - 1] != '~')) {
                    MenuCreator::createFromFile(thisfile, menu, false);
                    Fluxbox::instance()->saveMenuFilename(thisfile.c_str());
                }
            }

        } else {
            // inject this file into the current menu
            MenuCreator::createFromFile(newfile, menu, false);
            Fluxbox::instance()->saveMenuFilename(newfile.c_str());
        }

        safe_counter--;

    } // end of include
    else if (str_key == "submenu") {
            
        FbTk::Menu *submenu = MenuCreator::createMenu("", screen_number);
        if (submenu == 0)
            return;

        if (str_cmd.size())
            submenu->setLabel(str_cmd.c_str());
        else
            submenu->setLabel(str_label.c_str());

        parseMenu(parse, *submenu);
        submenu->update();
        menu.insert(str_label.c_str(), submenu);
        // save to screen list so we can delete it later
        BScreen *screen = Fluxbox::instance()->findScreen(screen_number);
        if (screen != 0)                    
            screen->saveMenu(*submenu);

    } // end of submenu
    else if (str_key == "stylesdir" || str_key == "stylesmenu") {
        createStyleMenu(menu, str_label, 
                        str_key == "stylesmenu" ? str_cmd : str_label);
    } // end of stylesdir
    else if (str_key == "themesdir" || str_key == "themesmenu") {
        createStyleMenu(menu, str_label, 
                        str_key == "themesmenu" ? str_cmd : str_label);
    } // end of themesdir
    else if (str_key == "wallpapers" || str_key == "wallpapermenu" || 
             str_key == "rootcommands") {
         createRootCmdMenu(menu, str_label, str_label, 
                          str_cmd == "" ? "fbsetbg" : str_cmd);
    } // end of wallpapers
    else if (str_key == "workspaces") {
        BScreen *screen = Fluxbox::instance()->findScreen(screen_number);
        if (screen != 0) {
            screen->getWorkspacemenu().setInternalMenu();
            menu.insert(str_label.c_str(), &screen->getWorkspacemenu());
        }
    } else if (str_key == "separator") {
        menu.insert(new FbTk::MenuSeparator());
    }
    else { // ok, if we didn't find any special menu item we try with command parser
        // we need to attach command with arguments so command parser can parse it
        string line = str_key + " " + str_cmd;
        FbTk::RefCount<FbTk::Command> command(CommandParser::instance().parseLine(line));
        if (*command != 0) {
            // special NLS default labels
            if (str_label.empty()) {
                if (str_key == "reconfig" || str_key == "reconfigure") {
                    menu.insert(_FBTEXT(Menu, Reconfigure, "Reload Config", "Reload all the configs"), command);
                    return;
                } else if (str_key == "restart") {
                    menu.insert(_FBTEXT(Menu, Restart, "Restart", "Restart Command"), command);
                    return;
                }
            }
            menu.insert(str_label.c_str(), command);
        }
    }
    if (menu.numberOfItems() != 0) {
        FbTk::MenuItem *item = menu.find(menu.numberOfItems() - 1);
        if (item != 0 && !pitem.icon().empty())
            item->setIcon(pitem.icon().c_str(), menu.screenNumber());
    }
}


static void parseWindowMenu(Parser &parse, FbTk::Menu &menu, FluxboxWindow &win) {

    ParseItem pitem(&menu);
    while (!parse.eof()) {
        pitem.load(parse);
        if (MenuCreator::createWindowMenuItem(pitem.key(), pitem.label(), menu, win))
            continue;

        if (pitem.key() == "end") {
            return;
        } else if (pitem.key() == "submenu") {
            FbTk::Menu *submenu = MenuCreator::createMenu(pitem.label(), menu.screenNumber());
            parseWindowMenu(parse, *submenu, win);
            submenu->update();
            menu.insert(pitem.label().c_str(), submenu);

        } else { // try non window menu specific stuff
            translateMenuItem(parse, pitem);
        }
    }
}

FbTk::Menu *MenuCreator::createMenu(const std::string &label, int screen_number) {
    BScreen *screen = Fluxbox::instance()->findScreen(screen_number);
    if (screen == 0)
        return 0;

    FbTk::Menu *menu = new FbMenu(screen->menuTheme(), 
                                  screen->imageControl(), 
                                  *screen->layerManager().
                                  getLayer(Fluxbox::instance()->getMenuLayer()));
    if (!label.empty())
        menu->setLabel(label.c_str());

    return menu;
}

bool getStart(FbMenuParser &parser, std::string &label) {
    ParseItem pitem(0);
    while (!parser.eof()) {
        // get first begin line
        pitem.load(parser);
        if (pitem.key() == "begin") {
            break;
        }
    }
    if (parser.eof())
        return false;

    label = pitem.label();
    return true;
}

FbTk::Menu *MenuCreator::createFromFile(const std::string &filename, int screen_number, bool require_begin) {
    std::string real_filename = FbTk::StringUtil::expandFilename(filename);
    FbMenuParser parser(real_filename);
    if (!parser.isLoaded())
        return 0;

    Fluxbox::instance()->saveMenuFilename(real_filename.c_str());

    std::string label;
    if (require_begin && !getStart(parser, label))
        return 0;
    
    FbTk::Menu *menu = createMenu(label, screen_number);
    if (menu != 0)
        parseMenu(parser, *menu);

    return menu;
}


bool MenuCreator::createFromFile(const std::string &filename,
                                 FbTk::Menu &inject_into, bool require_begin) {

    std::string real_filename = FbTk::StringUtil::expandFilename(filename);
    FbMenuParser parser(real_filename);
    if (!parser.isLoaded())
        return false;

    std::string label;
    if (require_begin && !getStart(parser, label))
        return false;

    parseMenu(parser, inject_into);
    return true;
}


bool MenuCreator::createFromFile(const std::string &filename, 
                                 FbTk::Menu &inject_into, 
                                 FluxboxWindow &win, bool require_begin) {
    std::string real_filename = FbTk::StringUtil::expandFilename(filename);
    FbMenuParser parser(real_filename);
    if (!parser.isLoaded())
        return false;

    std::string label;

    if (require_begin && !getStart(parser, label))
        return false;

    parseWindowMenu(parser, inject_into, win);
    return true;
}


FbTk::Menu *MenuCreator::createMenuType(const std::string &type, int screen_num) {
    BScreen *screen = Fluxbox::instance()->findScreen(screen_num);
    if (screen == 0)
        return 0;
    if (type == "iconmenu") {
        return new IconMenu(*screen);
    } else if (type == "workspacemenu") {
        return new WorkspaceMenu(*screen);
    }
    return 0;
}

bool MenuCreator::createWindowMenuItem(const std::string &type, 
                                       const std::string &label,
                                       FbTk::Menu &menu,
                                       FluxboxWindow &win) {
    typedef FbTk::RefCount<FbTk::Command> RefCmd;
    typedef FbTk::SimpleCommand<FluxboxWindow> WindowCmd;
    _FB_USES_NLS;

    if (type == "shade") {
        RefCmd shade_cmd(new WindowCmd(win, &FluxboxWindow::shade));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Shade, "Shade", "Shade the window"):label.c_str(), shade_cmd);
    } else if (type == "maximize") {
        RefCmd maximize_cmd(new WindowCmd(win, &FluxboxWindow::maximizeFull));
        RefCmd maximize_vert_cmd(new WindowCmd(win, &FluxboxWindow::maximizeVertical));
        RefCmd maximize_horiz_cmd(new WindowCmd(win, &FluxboxWindow::maximizeHorizontal));
        FbTk::MultiButtonMenuItem *maximize_item = new FbTk::MultiButtonMenuItem(3, label.empty()?_FBTEXT(Windowmenu, Maximize, "Maximize", "Maximize the window"):label.c_str());
        // create maximize item with:
        // button1: Maximize normal
        // button2: Maximize Vertical
        // button3: Maximize Horizontal
        maximize_item->setCommand(1, maximize_cmd);
        maximize_item->setCommand(2, maximize_vert_cmd);
        maximize_item->setCommand(3, maximize_horiz_cmd);
        menu.insert(maximize_item);
    } else if (type == "iconify") {
        RefCmd iconify_cmd(new WindowCmd(win, &FluxboxWindow::iconify));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Iconify, "Iconify", "Iconify the window"):label.c_str(), iconify_cmd);
    } else if (type == "close") {
        RefCmd close_cmd(new WindowCmd(win, &FluxboxWindow::close));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Close, "Close", "Close the window"):label.c_str(), close_cmd);
    } else if (type == "lower") {
        RefCmd lower_cmd(new WindowCmd(win, &FluxboxWindow::lower));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Lower, "Lower", "Lower the window"):label.c_str(), lower_cmd);
    } else if (type == "raise") {
        RefCmd raise_cmd(new WindowCmd(win, &FluxboxWindow::raise));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Raise, "Raise", "Raise the window"):label.c_str(), raise_cmd);
    } else if (type == "stick") {
        RefCmd stick_cmd(new WindowCmd(win, &FluxboxWindow::stick));
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Stick, "Stick", "Stick the window"):label.c_str(), stick_cmd);
    } else if (type == "extramenus") {
        FluxboxWindow::ExtraMenus::iterator it = win.extraMenus().begin();
        FluxboxWindow::ExtraMenus::iterator it_end = win.extraMenus().end();
        for (; it != it_end; ++it) {
            it->second->disableTitle();
            menu.insert(it->first, it->second);
        }

    } else if (type == "sendto") {
        menu.insert(label.empty()?_FBTEXT(Windowmenu, SendTo, "Send To...", "Send to menu item name"):label.c_str(), new SendToMenu(win));
    } else if (type == "layer") {
        BScreen *screen = Fluxbox::instance()->findScreen(menu.screenNumber());
        if (screen == 0)
            return false;
        FbTk::Menu *submenu = new LayerMenu<FluxboxWindow>(screen->menuTheme(), 
                                                           screen->imageControl(), 
                                                           *screen->layerManager().
                                                           getLayer(Fluxbox::instance()->getMenuLayer()), 
                                                           &win,
                                                           false);
        submenu->disableTitle();
        menu.insert(label.empty()?_FBTEXT(Windowmenu, Layer, "Layer ...", "Layer menu"):label.c_str(), submenu);


    } else if (type == "separator") {
        menu.insert(new FbTk::MenuSeparator());
    } else
        return false;

    return true;
}