From 8fd4de0dcce2c9991b9b0593184778293b5e6dc7 Mon Sep 17 00:00:00 2001
From: stefan-niedermann <info@niedermann.it>
Date: Tue, 31 Dec 2019 10:44:23 +0100
Subject: [PATCH] #451 Toggle checkboxes in view mode

---
 .../android/fragment/NotePreviewFragment.java | 48 ++++++++++---------
 1 file changed, 26 insertions(+), 22 deletions(-)

diff --git a/app/src/main/java/it/niedermann/owncloud/notes/android/fragment/NotePreviewFragment.java b/app/src/main/java/it/niedermann/owncloud/notes/android/fragment/NotePreviewFragment.java
index 032ea2b72..c9e3c0a4e 100644
--- a/app/src/main/java/it/niedermann/owncloud/notes/android/fragment/NotePreviewFragment.java
+++ b/app/src/main/java/it/niedermann/owncloud/notes/android/fragment/NotePreviewFragment.java
@@ -4,6 +4,7 @@
 import android.graphics.Typeface;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.text.TextUtils;
 import android.text.method.LinkMovementMethod;
 import android.util.TypedValue;
 import android.view.LayoutInflater;
@@ -75,28 +76,31 @@ public void onActivityCreated(@Nullable Bundle savedInstanceState) {
         markdownProcessor.factory(TextFactory.create());
         markdownProcessor.config(
                 MarkDownUtil.getMarkDownConfiguration(noteContent.getContext())
-//                        .setOnTodoClickCallback((view, line, lineNumber) -> {
-//                                    String[] lines = TextUtils.split(note.getContent(), "\\r?\\n");
-//                                    /*
-//                                     * Workaround for a bug when checkbox is the last line:
-//                                     * When (un)checking a checkbox which is in the last line, every time it gets toggled, the last character of the line gets lost.
-//                                     */
-//                                    if ((lines.length - 1) == lineNumber) {
-//                                        if(lines[lineNumber].contains("- [ ]")) {
-//                                            lines[lineNumber] = lines[lineNumber].replace("- [ ]", "- [x]");
-//                                        } else {
-//                                            lines[lineNumber] = lines[lineNumber].replace("- [x]", "- [ ]");
-//                                        }
-//
-//                                    } else if (lines.length >= lineNumber) {
-//                                        lines[lineNumber] = line;
-//                                    }
-//                                    changedText = TextUtils.join("\n", lines);
-//                                    noteContent.setText(markdownProcessor.parse(changedText));
-//                                    saveNote(null);
-//                                    return line;
-//                                }
-//                        )
+                        .setOnTodoClickCallback((view, line, lineNumber) -> {
+                                    try {
+                                        String[] lines = TextUtils.split(note.getContent(), "\\r?\\n");
+                                        /*
+                                         * Workaround for multiple bugs:
+                                         * When (un)checking a checkbox which is in the last line, every time it gets toggled, the last character of the line gets lost.
+                                         * When (un)checking a checkbox, every markdown gets stripped in the given line argument
+                                         */
+                                        if (lines[lineNumber].startsWith("- [ ]") || lines[lineNumber].startsWith("* [ ]")) {
+                                            lines[lineNumber] = lines[lineNumber].replace("- [ ]", "- [x]");
+                                            lines[lineNumber] = lines[lineNumber].replace("* [ ]", "* [x]");
+                                        } else {
+                                            lines[lineNumber] = lines[lineNumber].replace("- [x]", "- [ ]");
+                                            lines[lineNumber] = lines[lineNumber].replace("* [x]", "* [ ]");
+                                        }
+
+                                        changedText = TextUtils.join("\n", lines);
+                                        noteContent.setText(markdownProcessor.parse(changedText));
+                                        saveNote(null);
+                                    } catch (IndexOutOfBoundsException e) {
+                                        Toast.makeText(getActivity(), "Checkbox could not be toggled.", Toast.LENGTH_SHORT).show();
+                                    }
+                                    return line;
+                                }
+                        )
                         .build());
         setActiveTextView(noteContent);
         noteContent.setText(markdownProcessor.parse(note.getContent()));