MDL-52996 Atto: Allow plugins to customise toolbar

lib/editor/atto/lib.php

@@ -69,6 +69,16 @@ class atto_texteditor extends texteditor {
     /**
      * Use this editor for given element.
      *
+     * Available Atto-specific options:
+     *   atto:toolbar - set to a string to override the system config editor_atto/toolbar
+     *
+     * Available general options:
+     *   context - set to the current context object
+     *   enable_filemanagement - set false to get rid of the managefiles plugin
+     *   autosave - true/false to control autosave
+     *
+     * Options are also passed through to the plugins.
+     *
      * @param string $elementid
      * @param array $options
      * @param null $fpoptions
@@ -76,7 +86,11 @@ class atto_texteditor extends texteditor {
     public function use_editor($elementid, array $options=null, $fpoptions=null) {
         global $PAGE;
 
-        $configstr = get_config('editor_atto', 'toolbar');
+        if (array_key_exists('atto:toolbar', $options)) {
+            $configstr = $options['atto:toolbar'];
+        } else {
+            $configstr = get_config('editor_atto', 'toolbar');
+        }
 
         $grouplines = explode("\n", $configstr);
 

lib/editor/atto/tests/behat/customtoolbar.feature

@@ -0,0 +1,36 @@
+@editor @editor_atto @atto
+Feature: Atto editor with customised toolbar
+  In order to develop plugins that use Atto for specialised purposes
+  As a developer
+  I need to be able to configure Atto toolbar per-instance to include different plugins
+
+  Background:
+    # Get to the fixture page.
+    Given the following "courses" exist:
+      | fullname | shortname | format |
+      | Course 1 | C1        | topics |
+    And the following "activities" exist:
+      | activity   | name | intro                                                                                  | course | idnumber |
+      | label      | L1   | <a href="../lib/editor/atto/tests/fixtures/custom_toolbar_example.php">FixtureLink</a> | C1     | label1   |
+    When I log in as "admin"
+    And I am on site homepage
+    And I follow "Course 1"
+    And I follow "FixtureLink"
+
+  @javascript
+  Scenario: Confirm that both editors have different toolbars but still function
+    Given ".atto_link_button" "css_element" should exist in the ".normaldiv" "css_element"
+    And ".atto_link_button" "css_element" should not exist in the ".specialdiv" "css_element"
+
+    When I set the field "normaleditor" to "Frogs"
+    And I select the text in the "normaleditor" Atto editor
+    And I click on ".atto_bold_button_bold" "css_element" in the ".normaldiv" "css_element"
+
+    And I set the field "specialeditor" to "Zombies"
+    And I select the text in the "specialeditor" Atto editor
+    And I click on ".atto_italic_button_italic" "css_element" in the ".specialdiv" "css_element"
+
+    And I press "Submit and see the HTML"
+
+    Then I should see "<b>Frogs</b>"
+    And I should see "<i>Zombies</i>"

lib/editor/atto/tests/fixtures/custom_toolbar_example.php

@@ -0,0 +1,86 @@
+<?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/>.
+
+/**
+ * Demonstrates use of Atto editor with overridden toolbar setting.
+ *
+ * This fixture is only used by the Behat test.
+ *
+ * @package editor_atto
+ * @copyright 2016 The Open University
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require(__DIR__ . '/../../../../../config.php');
+require_once($CFG->dirroot . '/lib/editor/atto/lib.php');
+
+// Behat test fixture only.
+defined('BEHAT_SITE_RUNNING') || die('Only available on Behat test server');
+
+$PAGE->set_url('/lib/editor/atto/tests/fixtures/override_plugins_example.php');
+$PAGE->set_context(context_system::instance());
+
+echo $OUTPUT->header();
+
+// If this was sending some input, display it.
+$normal = optional_param('normaleditor', '', PARAM_RAW);
+$special = optional_param('specialeditor', '', PARAM_RAW);
+if ($normal !== '' || $special !== '') {
+    echo html_writer::start_div('normalresult');
+    echo s($normal);
+    echo html_writer::end_div();
+    echo html_writer::start_div('specialresult');
+    echo s($special);
+    echo html_writer::end_div();
+} else {
+    // Create a form.
+    echo html_writer::start_tag('form', array('method' => 'post', 'action' => 'custom_toolbar_example.php'));
+    echo html_writer::start_div();
+
+    // Basic editor options.
+    $options = array();
+    $atto = new atto_texteditor();
+
+    // Normal Atto.
+    echo html_writer::start_div('normaldiv');
+    echo $OUTPUT->heading('Normal Atto');
+    echo html_writer::div(html_writer::tag('textarea', '',
+            array('id' => 'normaleditor', 'name' => 'normaleditor', 'rows' => 10)));
+    $atto->use_editor('normaleditor', $options);
+    echo html_writer::end_div();
+
+    // Second Atto with custom options.
+    echo html_writer::start_div('specialdiv');
+    $options['atto:toolbar'] = <<<EOT
+style1 = bold, italic
+list = unorderedlist, orderedlist
+EOT;
+    echo $OUTPUT->heading('Special Atto');
+    echo html_writer::div(html_writer::tag('textarea', '',
+            array('id' => 'specialeditor', 'name' => 'specialeditor', 'rows' => 10)));
+    $atto->use_editor('specialeditor', $options);
+    echo html_writer::end_div();
+
+    // Button to submit form.
+    echo html_writer::start_div('', array('style' => 'margin-top: 20px'));
+    echo html_writer::tag('button', 'Submit and see the HTML');
+    echo html_writer::end_div();
+
+    echo html_writer::end_div();
+    echo html_writer::end_tag('form');
+}
+
+echo $OUTPUT->footer();

lib/editorlib.php

@@ -225,8 +225,12 @@ abstract class texteditor {
 
     /**
      * Add required JS needed for editor
+     *
+     * Valid options may vary by editor. See the individual editor
+     * implementations of this function for documentation.
+     *
      * @param string $elementid id of text area to be converted to editor
-     * @param array $options
+     * @param array $options Editor options
      * @param obejct $fpoptions file picker options
      * @return void
      */