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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace core_question\local\bank;
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/**
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* Base class to implement actions that can be performed on any column.
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*
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* A plugin should define subclasses of this for each action it provides, and return an instance of each from
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* plugin_feature::get_column_actions(). The action returned from {@see get_action_menu_link()} will be displayed in each column
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* header.
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*
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* @package core_question
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* @copyright 2023 onwards Catalyst IT EU {@link https://catalyst-eu.net}
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* @author Mark Johnson <mark.johnson@catalyst-eu.net>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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abstract class column_action_base extends view_component {
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/**
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* A chance for subclasses to initialise themselves, for example to load lang strings,
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* without having to override the constructor.
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*/
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protected function init(): void {
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}
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/**
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* Return the action menu link for this action on the supplied column.
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*
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* @param column_base $column The column we are providing the action for.
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* @return ?\action_menu_link The action to display in the column header.
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*/
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abstract public function get_action_menu_link(column_base $column): ?\action_menu_link;
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}
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