MDL-60384 mod_book: Add a label to highlight the previous chapter

* Added current chapter's title to the button title so it's clear where you're adding the chapter to.
* Update the behat tests to reflect the changes made to the title

mod/book/edit.php

@@ -54,6 +54,15 @@
 }
 $chapter->cmid = $cm->id;
 
+// Get the previous page number.
+$prevpage = $chapter->pagenum - 1;
+if ($prevpage) {
+    $currentchapter = $DB->get_record('book_chapters', ['pagenum' => $prevpage, 'bookid' => $book->id]);
+    if ($currentchapter) {
+        $chapter->currentchaptertitle = $currentchapter->title;
+    }
+}
+
 $options = array('noclean'=>true, 'subdirs'=>true, 'maxfiles'=>-1, 'maxbytes'=>0, 'context'=>$context);
 $chapter = file_prepare_standard_editor($chapter, 'content', $options, $context, 'mod_book', 'chapter', $chapter->id);
 

mod/book/edit_form.php

@@ -48,6 +48,13 @@ function definition() {
             $mform->addElement('header', 'general', get_string('addafter', 'mod_book'));
         }
 
+        if (isset($chapter->currentchaptertitle)) {
+            $mform->addElement('static', 'details',
+                get_string('previouschapter', 'mod_book'),
+                $chapter->currentchaptertitle
+            );
+        }
+
         $mform->addElement('text', 'title', get_string('chaptertitle', 'mod_book'), array('size'=>'30'));
         $mform->setType('title', PARAM_RAW);
         $mform->addRule('title', null, 'required', null, 'client');

mod/book/lang/en/book.php

@@ -87,6 +87,8 @@
 $string['numberingoptions'] = 'Available options for chapter formatting';
 $string['numberingoptions_desc'] = 'Options for displaying chapters and subchapters in the table of contents';
 $string['addafter'] = 'Add new chapter';
+$string['addafterchapter'] = 'Add new chapter after "{$a->title}"';
+$string['previouschapter'] = 'Previous chapter';
 $string['confchapterdelete'] = 'Do you really want to delete this chapter?';
 $string['confchapterdeleteall'] = 'Do you really want to delete this chapter and all its subchapters?';
 $string['top'] = 'top';

mod/book/locallib.php

@@ -336,8 +336,10 @@ function book_get_toc($chapters, $chapter, $book, $cm, $edit) {
                         $OUTPUT->pix_icon('t/hide', get_string('hidechapter', 'mod_book', $title)),
                         array('title' => get_string('hidechapter', 'mod_book', $titleunescaped)));
             }
+
+            $buttontitle = get_string('addafterchapter', 'mod_book', ['title' => $ch->title]);
             $toc .= html_writer::link(new moodle_url('edit.php', array('cmid' => $cm->id, 'pagenum' => $ch->pagenum, 'subchapter' => $ch->subchapter)),
-                                            $OUTPUT->pix_icon('add', get_string('addafter', 'mod_book'), 'mod_book'), array('title' => get_string('addafter', 'mod_book')));
+                                            $OUTPUT->pix_icon('add', $buttontitle, 'mod_book'), array('title' => $buttontitle));
             $toc .= html_writer::end_tag('div');
 
             if (!$ch->subchapter) {

mod/book/tests/behat/create_chapters.feature

@@ -28,13 +28,15 @@ Feature: In a book, create chapters and sub chapters
       | Content | Dream is the start of a journey |
     And I press "Save changes"
     And I should see "1. Dummy first chapter" in the "Table of contents" "block"
-    And I click on "Add new chapter" "link" in the "Table of contents" "block"
+    And I click on "Add new chapter after \"Dummy first chapter\"" "link" in the "Table of contents" "block"
+    And I should see "Dummy first chapter"
     And I set the following fields to these values:
       | Chapter title | Dummy second chapter |
       | Content | The path is the second part |
     And I press "Save changes"
     And I should see "2. Dummy second chapter" in the "Table of contents" "block"
-    And I click on "Add new chapter" "link" in the "Table of contents" "block"
+    And I click on "Add new chapter after \"Dummy first chapter\"" "link" in the "Table of contents" "block"
+    And I should see "Dummy first chapter"
     And I set the following fields to these values:
       | Chapter title | Dummy first subchapter |
       | Content | The path is the second part |
@@ -75,4 +77,4 @@ Feature: In a book, create chapters and sub chapters
     Then "Edit chapter \"1. Dummy first chapter\"" "link" should not exist in the "Table of contents" "block"
     And "Delete chapter \"1. Dummy first chapter\"" "link" should not exist in the "Table of contents" "block"
     And "Hide chapter \"1. Dummy first chapter\"" "link" should not exist in the "Table of contents" "block"
-    And "Add new chapter" "link" should not exist in the "Table of contents" "block"
+    And "Add new chapter after \"Dummy first chapter\"" "link" should not exist in the "Table of contents" "block"

mod/book/tests/behat/reorganize_chapters.feature

@@ -25,24 +25,24 @@ Feature: In a book, chapters and subchapters can be rearranged
       | Chapter title | Originally first chapter |
       | Content | #1 chapter content |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=1']" "css_element"
+    And I click on "Add new chapter after \"Originally first chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | A great second chapter |
       | Content | #2 chapter content |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=2']" "css_element"
+    And I click on "Add new chapter after \"A great second chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | Second chapter, subchapter 1 |
       | Content | #21 subchapter content |
       | Subchapter | 1 |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=3']" "css_element"
+    And I click on "Add new chapter after \"Second chapter, subchapter 1\"" "link"
     And I set the following fields to these values:
       | Chapter title | Second chapter, subchapter 2 |
       | Content | #22 subchapter content |
       | Subchapter | 1 |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=4']" "css_element"
+    And I click on "Add new chapter after \"Second chapter, subchapter 2\"" "link"
     And I set the following fields to these values:
       | Chapter title | There aren't 2 without 3 |
       | Content | #3 subchapter content |

mod/book/tests/behat/show_hide_chapters.feature

@@ -26,24 +26,24 @@ Feature: Book activity chapter visibility management
       | Chapter title | First chapter |
       | Content | First chapter |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=1']" "css_element"
+    And I click on "Add new chapter after \"First chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | Second chapter |
       | Content | Second chapter |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=2']" "css_element"
+    And I click on "Add new chapter after \"Second chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | Sub chapter |
       | subchapter | 1 |
       | Content | Sub chapter |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=3']" "css_element"
+    And I click on "Add new chapter after \"Sub chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | Third chapter |
       | subchapter | 0 |
       | Content | Third chapter |
     And I press "Save changes"
-    And I click on "a[href*='pagenum=4']" "css_element"
+    And I click on "Add new chapter after \"Third chapter\"" "link"
     And I set the following fields to these values:
       | Chapter title | Fourth chapter |
       | Content | Fourth chapter |