#1717 add: note backlink widget integration

Signed-off-by: Patrizio Bekerle <[email protected]>

CHANGELOG.md

@@ -1,6 +1,8 @@
 # QOwnNotes Changelog
 
-## Next
+## 24.9.0
+- There now is a **backlink widget** in the navigation panel to show backlinks
+  to the current note (for [#1717](https://github.com/pbek/QOwnNotes/issues/1717))
 - The aarch64 CMake build process was fixed (for [#3076](https://github.com/pbek/QOwnNotes/issues/3076))
 
 ## 24.8.6

src/CMakeLists.txt

@@ -346,6 +346,8 @@ set(SOURCE_FILES
     widgets/qownnotesmarkdowntextedit.h
     widgets/navigationwidget.cpp
     widgets/navigationwidget.h
+    widgets/backlinkwidget.cpp
+    widgets/backlinkwidget.h
     widgets/notepreviewwidget.cpp
     widgets/notepreviewwidget.h
     widgets/combobox.cpp

src/QOwnNotes.pro

@@ -177,6 +177,7 @@ SOURCES += main.cpp\
     dialogs/issueassistantdialog.cpp \
     dialogs/tagadddialog.cpp \
     widgets/navigationwidget.cpp \
+    widgets/backlinkwidget.cpp \
     widgets/notepreviewwidget.cpp \
     api/noteapi.cpp \
     api/notesubfolderapi.cpp \
@@ -286,6 +287,7 @@ HEADERS  += mainwindow.h \
     dialogs/issueassistantdialog.h \
     dialogs/tagadddialog.h \
     widgets/navigationwidget.h \
+    widgets/backlinkwidget.h \
     widgets/notepreviewwidget.h \
     api/noteapi.h \
     api/notesubfolderapi.h \

src/entities/note.cpp

@@ -3382,6 +3382,29 @@ bool Note::handleNoteMoving(const Note &oldNote) {
     return noteIdList.contains(_id);
 }
 
+QList<Note> Note::findBacklinks() const {
+    const QVector<int> noteIdList = this->findLinkedNoteIds();
+    const int noteCount = noteIdList.count();
+
+    if (noteCount == 0) {
+        return {};
+    }
+
+    QList<Note> notes;
+
+    for (const int noteId : noteIdList) {
+        const Note linkedNote = Note::fetch(noteId);
+
+        if (!linkedNote.isFetched()) {
+            continue;
+        }
+
+        notes << linkedNote;
+    }
+
+    return notes;
+}
+
 /**
  * Creates a note headline from a name
  *

src/entities/note.h

@@ -360,6 +360,8 @@ class Note {
 
     static bool applyIgnoredNotesSetting(QStringList &fileNames);
 
+    QList<Note> findBacklinks() const;
+
    protected:
     int _id;
     int _noteSubFolderId;