Add documents

Add documents, document views and a document store to manage document and which one is displayed.

• The MainWindow make calls to the VivyDocumentStore to create the documents and the views
• The VivyDocumentStore create the documents
• The VivyDocumentView is only here to have a view, it won't hold any data
• The VivyDocument can be manipulated in any part of the code
• Widgets view the VivyDocument through the VivyDocumentView
• Add the VivyApplication that will hold the window and the non-graphic data
• The main window can get the currently selected main document

src/Document/VivyDocument.cc

@@ -19,12 +19,10 @@ VivyDocument::loadSubDocument(const QString &name) noexcept
     if (detectDocumentType(file, &type)) {
         switch (type) {
         case SubDocument::Audio:
-            audioFile = name;
             audioDocument = std::unique_ptr<AudioDocument>(AudioDocument::fromFile(file.absolutePath()));
             break;
 
         case SubDocument::Video:
-            videoFile = name;
             videoDocument = std::unique_ptr<VideoDocument>(VideoDocument::fromFile(file.absolutePath()));
             break;
 
@@ -52,13 +50,11 @@ VivyDocument::loadSubDocument(const QString &name, VivyDocument::SubDocument asT
     }
 
     else if (type == SubDocument::Video && asType == SubDocument::Video) {
-        videoFile = name;
         videoDocument = std::unique_ptr<VideoDocument>(VideoDocument::fromFile(file.absolutePath()));
     }
 
     else if ((type == SubDocument::Video && asType == SubDocument::Audio) ||
              (type == SubDocument::Audio && asType == SubDocument::Audio)) {
-        audioFile = name;
         audioDocument = std::unique_ptr<AudioDocument>(AudioDocument::fromFile(file.absolutePath()));
     }
 
@@ -110,22 +106,16 @@ VivyDocument::rename(const QString &name) noexcept
     return false;
 }
 
-QString
-VivyDocument::getSubDocument(SubDocument subType) const noexcept
+AudioDocument *const
+VivyDocument::getAudioSubDocument() const noexcept
 {
-    if ((documentType & subType) == 0) {
-        QString ret;
-        return ret;
-    }
+    return audioDocument.get();
+}
 
-    switch (subType) {
-    case SubDocument::Audio:
-        return audioFile;
-    case SubDocument::Video:
-        return videoFile;
-    case SubDocument::ASS:
-        return assFile;
-    }
+VideoDocument *const
+VivyDocument::getVideoSubDocument() const noexcept
+{
+    return videoDocument.get();
 }
 
 VivyDocument *