<?php
/**
 * User Interface class for the Tasklist plugin
 *
 * @version @package_version@
 * @author Thomas Bruederli <bruederli@kolabsys.com>
 *
 * Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */


class tasklist_ui
{
    private $rc;
    private $plugin;
    private $ready = false;

    function __construct($plugin)
    {
        $this->plugin = $plugin;
        $this->rc = $plugin->rc;
    }

    /**
    * Calendar UI initialization and requests handlers
    */
    public function init()
    {
        if ($this->ready)  // already done
            return;

        // add taskbar button
        $this->plugin->add_button(array(
            'command' => 'tasks',
            'class'   => 'button-tasklist',
            'classsel' => 'button-tasklist button-selected',
            'innerclass' => 'button-inner',
            'label'   => 'tasklist.navtitle',
        ), 'taskbar');

        $skin = $this->rc->config->get('skin');
        $this->plugin->include_stylesheet('skins/' . $skin . '/tasklist.css');
        $this->ready = true;
  }

    /**
    * Register handler methods for the template engine
    */
    public function init_templates()
    {
        $this->plugin->register_handler('plugin.tasklists', array($this, 'tasklists'));
        $this->plugin->register_handler('plugin.tasklist_select', array($this, 'tasklist_select'));
        $this->plugin->register_handler('plugin.category_select', array($this, 'category_select'));
        $this->plugin->register_handler('plugin.searchform', array($this->rc->output, 'search_form'));
        $this->plugin->register_handler('plugin.quickaddform', array($this, 'quickadd_form'));
        $this->plugin->register_handler('plugin.tasks', array($this, 'tasks_resultview'));

        $this->plugin->include_script('tasklist.js');

        // copy config to client
        $defaults = $this->plugin->defaults;
        $settings = array(
            'date_format' => $this->rc->config->get('date_format', $defaults['date_format']),
            'time_format' => $this->rc->config->get('time_format', $defaults['time_format']),
            'first_day' => $this->rc->config->get('calendar_first_day', $defaults['first_day']),
        );
        
        $this->rc->output->set_env('tasklist_settings', $settings);
    }

    /**
     *
     */
    function tasklists($attrib = array())
    {
        $lists = $this->plugin->driver->get_lists();

        $li = '';
        foreach ((array)$lists as $id => $prop) {
            if ($attrib['activeonly'] && !$prop['active'])
              continue;

            unset($prop['user_id']);
            $prop['alarms'] = $this->plugin->driver->alarms;
            $prop['undelete'] = $this->plugin->driver->undelete;
            $prop['sortable'] = $this->plugin->driver->sortable;
            $jsenv[$id] = $prop;

            $html_id = html_identifier($id);
            $class = 'tasks-'  . asciiwords($id, true);

            if ($prop['readonly'])
                $class .= ' readonly';
            if ($prop['class_name'])
                $class .= ' '.$prop['class_name'];

            $li .= html::tag('li', array('id' => 'rcmlitasklist' . $html_id, 'class' => $class),
                html::tag('input', array('type' => 'checkbox', 'name' => '_list[]', 'value' => $id, 'checked' => $prop['active'], 'disabled' => true)) .
                html::span('handle', '&nbsp;') .
                html::span('listname', Q($prop['name'])));
        }

        $this->rc->output->set_env('tasklists', $jsenv);
        $this->rc->output->add_gui_object('folderlist', $attrib['id']);

        return html::tag('ul', $attrib, $li, html::$common_attrib);
    }


    /**
     * Render a HTML select box for list selection
     */
    function tasklist_select($attrib = array())
    {
        $attrib['name'] = 'list';
        $select = new html_select($attrib);
        foreach ((array)$this->plugin->driver->get_lists() as $id => $prop) {
            if (!$prop['readonly'])
                $select->add($prop['name'], $id);
        }

        return $select->show(null);
    }

    /**
     * Render a HTML select box to select a task category
     */
    function category_select($attrib = array())
    {
        $attrib['name'] = 'categories';
        $select = new html_select($attrib);
        $select->add('---', '');
        foreach ((array)$this->plugin->driver->list_categories() as $cat => $color) {
            $select->add($cat, $cat);
        }

        return $select->show(null);
    }

    /**
     *
     */
    function quickadd_form($attrib)
    {
        $attrib += array('action' => $this->rc->url('add'), 'method' => 'post', 'id' => 'quickaddform');

        $input = new html_inputfield(array('name' => 'text', 'id' => 'quickaddinput', 'placeholder' => $this->plugin->gettext('createnewtask')));
        $button = html::tag('input', array('type' => 'submit', 'value' => '+', 'class' => 'button mainaction'));

        $this->rc->output->add_gui_object('quickaddform', $attrib['id']);
        return html::tag('form', $attrib, $input->show() . $button);
    }

    /**
     * The result view
     */
    function tasks_resultview($attrib)
    {
        $attrib += array('id' => 'rcmtaskslist');

        $this->rc->output->add_gui_object('resultlist', $attrib['id']);

        unset($attrib['name']);
        return html::tag('ul', $attrib, '');
    }


}