Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace core\output\local\dropdown;

use core\output\named_templatable;

use renderable;

/**

 * Class to render a dropdown dialog element.

 *

 * A dropdown dialog allows to render any arbitrary HTML into a dropdown elements triggered

 * by a button.

 *

 * @package    core

 * @category   output

 * @copyright  2023 Ferran Recio <ferran@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class dialog implements named_templatable, renderable {

    /** Dropdown dialog positions. */

    public const POSITION = [

        'start' => 'dropdown-menu-left',

        'end' => 'dropdown-menu-right',

    ];

    /** Dropdown dialog positions. */

    public const WIDTH = [

        'default' => '',

        'big' => 'dialog-big',

        'small' => 'dialog-small',

    ];

    /**

     * @var string content of dialog.

     */

    protected $dialogcontent = '';

    /**

     * @var bool if the footer should auto enable or not.

     */

    protected $buttoncontent = true;

    /**

     * @var string trigger button CSS classes.

     */

    protected $buttonclasses = '';

    /**

     * @var string component CSS classes.

     */

    protected $classes = '';

    /**

     * @var string the dropdown position.

     */

    protected $dropdownposition = self::POSITION['start'];

    /**

     * @var string dropdown preferred width.

     */

    protected $dropdownwidth = self::WIDTH['default'];

    /**

     * @var array extra HTML attributes (attribute => value).

     */

    protected $extras = [];

    /**

     * @var bool if the element is disabled.

     */

    protected $disabled = false;

    /**

     * Constructor.

     *

     * The definition object could contain the following keys:

     * - classes: component CSS classes.

     * - buttonclasses: the button CSS classes.

     * - dialogwidth: the dropdown width.

     * - dropdownposition: the dropdown position.

     * - extras: extra HTML attributes (attribute => value).

     *

     * @param string $buttoncontent the button content

     * @param string $dialogcontent the footer content

     * @param array $definition an optional array of the element definition

     */

    public function __construct(string $buttoncontent, string $dialogcontent, array $definition = []) {

        $this->buttoncontent = $buttoncontent;

        $this->dialogcontent = $dialogcontent;

        if (isset($definition['classes'])) {

            $this->classes = $definition['classes'];

        }

        if (isset($definition['buttonclasses'])) {

            $this->buttonclasses = $definition['buttonclasses'];

        }

        if (isset($definition['extras'])) {

            $this->extras = $definition['extras'];

        }

        if (isset($definition['dialogwidth'])) {

            $this->dropdownwidth = $definition['dialogwidth'];

        }

        if (isset($definition['dropdownposition'])) {

            $this->dropdownposition = $definition['dropdownposition'];

        }

    }

    /**

     * Set the dialog contents.

     *

     * @param string $dialogcontent

     */

    public function set_content(string $dialogcontent) {

        $this->dialogcontent = $dialogcontent;

    }

    /**

     * Set the button contents.

     *

     * @param string $buttoncontent

     * @param string|null $buttonclasses the button classes

     */

    public function set_button(string $buttoncontent, ?string $buttonclasses = null) {

        $this->buttoncontent = $buttoncontent;

        if ($buttonclasses !== null) {

            $this->buttonclasses = $buttonclasses;

        }

    }

    /**

     * Set the dialog width.

     *

     * @param string $width

     */

    public function set_dialog_width(string $width) {

        $this->dropdownwidth = $width;

    }

    /**

     * Add extra classes to trigger butotn.

     *

     * @param string $buttonclasses the extra classes

     */

    public function set_button_classes(string $buttonclasses) {

        $this->buttonclasses = $buttonclasses;

    }

    /**

     * Add extra classes to the component.

     *

     * @param string $classes the extra classes

     */

    public function set_classes(string $classes) {

        $this->classes = $classes;

    }

    /**

     * Add extra extras to the sticky footer element.

     *

     * @param string $attribute the extra attribute

     * @param string $value the value

     */

    public function add_extra(string $attribute, string $value) {

        $this->extras[$attribute] = $value;

    }

    /**

     * Set the button element id.

     *

     * @param string $value the value

     */

    public function add_button_id(string $value) {

        $this->extras['buttonid'] = $value;

    }

    /**

     * Set the dropdown position.

     * @param string $position the position

     */

    public function set_position(string $position) {

        $this->dropdownposition = $position;

    }

    /**

     * Set the dropdown disabled attribute.

     * @param bool $disabled the disabled value

     */

    public function set_disabled(bool $disabled) {

        $this->disabled = $disabled;

    }

    /**

     * Export this data so it can be used as the context for a mustache template (core/inplace_editable).

     *

     * @param \renderer_base $output typically, the renderer that's calling this function

     * @return array data context for a mustache template

     */

    public function export_for_template(\renderer_base $output): array {

        $extras = [];

        // Id is required to add JS controls to the dropdown.

        $dropdownid = $this->extras['id'] ?? \html_writer::random_id('dropdownDialog_');

        if (isset($this->extras['id'])) {

            unset($this->extras['id']);

        }

        foreach ($this->extras as $attribute => $value) {

            $extras[] = [

                'attribute' => $attribute,

                'value' => $value,

            ];

        }

        $data = [

            // Id is required for the correct HTML labelling.

            'dropdownid' => $dropdownid,

            'buttonid' => $this->extras['buttonid'] ?? \html_writer::random_id('dropwdownbutton_'),

            'buttoncontent' => (string) $this->buttoncontent,

            'dialogcontent' => (string) $this->dialogcontent,

            'classes' => $this->classes,

            'buttonclasses' => $this->buttonclasses,

            'dialogclasses' => $this->dropdownwidth,

            'extras' => $extras,

        ];

        if ($this->disabled) {

            $data['disabledbutton'] = true;

        }

        // Bootstrap 4 dropdown position still uses left and right literals.

        $data["position"] = $this->dropdownposition;

        if (right_to_left()) {

            $rltposition = [

                self::POSITION['start'] => self::POSITION['end'],

                self::POSITION['end'] => self::POSITION['end'],

            ];

            $data["position"] = $rltposition[$this->dropdownposition];

        }

        return $data;

    }

    /**

     * Get the name of the template to use for this templatable.

     *

     * @param \renderer_base $renderer The renderer requesting the template name

     * @return string the template name

     */

    public function get_template_name(\renderer_base $renderer): string {

        return 'core/local/dropdown/dialog';

    }

}