<refactor, feat>(ui): Text editor improvements.

1. Add binary display mode
2. Add information bar
3. Added character code recognition function.
4. Identify text encoding and line breaks
5. Count the number of characters
6. Code reconstruction

1 files changed, 28 insertions, 32 deletions

diff --git a/src/ui/widgets/TextEdit.cpp b/src/ui/widgets/TextEdit.cpp
index be6ec181..a8ff8d73 100644
--- a/src/ui/widgets/TextEdit.cpp
+++ b/src/ui/widgets/TextEdit.cpp
@@ -50,7 +50,7 @@ TextEdit::TextEdit(QWidget* parent) : QWidget(parent) {
 void TextEdit::slotNewTab() {
   QString header = _("untitled") + QString::number(++countPage) + ".txt";
 
-  auto* page = new EditorPage();
+  auto* page = new PlainTextEditorPage();
   auto index = tabWidget->addTab(page, header);
   tabWidget->setTabIcon(index, QIcon(":file.png"));
   tabWidget->setCurrentIndex(tabWidget->count() - 1);
@@ -80,11 +80,11 @@ void TextEdit::slotOpenFile(QString& path) {
   LOG(INFO) << "path" << path.toStdString();
   auto result = file.open(QIODevice::ReadOnly | QIODevice::Text);
   if (result) {
-    auto* page = new EditorPage(path);
+    auto* page = new PlainTextEditorPage(path);
     connect(page->getTextPage()->document(),
             &QTextDocument::modificationChanged, this,
             &TextEdit::slotShowModified);
-    
+
     QApplication::setOverrideCursor(Qt::WaitCursor);
     auto index = tabWidget->addTab(page, strippedName(path));
     tabWidget->setTabIcon(index, QIcon(":file.png"));
@@ -111,7 +111,7 @@ void TextEdit::slotOpen() {
       QFile file(fileName);
 
       if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        auto* page = new EditorPage(fileName);
+        auto* page = new PlainTextEditorPage(fileName);
 
         QTextStream in(&file);
         QApplication::setOverrideCursor(Qt::WaitCursor);
@@ -165,7 +165,7 @@ bool TextEdit::saveFile(const QString& fileName) {
   QFile file(fileName);
 
   if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
-    EditorPage* page = slotCurPageTextEdit();
+    PlainTextEditorPage* page = slotCurPageTextEdit();
 
     QTextStream outputStream(&file);
     QApplication::setOverrideCursor(Qt::WaitCursor);
@@ -197,7 +197,7 @@ bool TextEdit::slotSaveAs() {
     return true;
   }
 
-  EditorPage* page = slotCurPageTextEdit();
+  PlainTextEditorPage* page = slotCurPageTextEdit();
   QString path;
   if (!page->getFilePath().isEmpty()) {
     path = page->getFilePath();
@@ -250,7 +250,7 @@ void TextEdit::removeTab(int index) {
  * If it returns false, the close event should be aborted.
  */
 bool TextEdit::maybeSaveCurrentTab(bool askToSave) {
-  EditorPage* page = slotCurPageTextEdit();
+  PlainTextEditorPage* page = slotCurPageTextEdit();
   // if this page is no textedit, there should be nothing to save
   if (page == nullptr) {
     return true;
@@ -352,13 +352,8 @@ bool TextEdit::maybeSaveAnyTab() {
   return false;
 }
 
-QTextEdit* TextEdit::curTextPage() const {
-  auto* curTextPage = qobject_cast<EditorPage*>(tabWidget->currentWidget());
-  if (curTextPage != nullptr) {
-    return curTextPage->getTextPage();
-  } else {
-    return nullptr;
-  }
+PlainTextEditorPage* TextEdit::curTextPage() const {
+  return qobject_cast<PlainTextEditorPage*>(tabWidget->currentWidget());
 }
 
 FilePage* TextEdit::curFilePage() const {
@@ -372,8 +367,9 @@ FilePage* TextEdit::curFilePage() const {
 
 int TextEdit::tabCount() const { return tabWidget->count(); }
 
-EditorPage* TextEdit::slotCurPageTextEdit() const {
-  auto* curPage = qobject_cast<EditorPage*>(tabWidget->currentWidget());
+PlainTextEditorPage* TextEdit::slotCurPageTextEdit() const {
+  auto* curPage =
+      qobject_cast<PlainTextEditorPage*>(tabWidget->currentWidget());
   return curPage;
 }
 
@@ -387,7 +383,7 @@ void TextEdit::slotQuote() const {
     return;
   }
 
-  QTextCursor cursor(curTextPage()->document());
+  QTextCursor cursor(curTextPage()->getTextPage()->document());
 
   // beginEditBlock and endEditBlock() let operation look like single undo/redo
   // operation
@@ -405,10 +401,10 @@ void TextEdit::slotQuote() const {
 }
 
 void TextEdit::slotFillTextEditWithText(const QString& text) const {
-  QTextCursor cursor(curTextPage()->document());
+  QTextCursor cursor(curTextPage()->getTextPage()->document());
   cursor.beginEditBlock();
-  this->curTextPage()->selectAll();
-  this->curTextPage()->insertPlainText(text);
+  this->curTextPage()->getTextPage()->selectAll();
+  this->curTextPage()->getTextPage()->insertPlainText(text);
   cursor.endEditBlock();
 }
 
@@ -425,7 +421,7 @@ void TextEdit::loadFile(const QString& fileName) {
   }
   QTextStream in(&file);
   QApplication::setOverrideCursor(Qt::WaitCursor);
-  curTextPage()->setPlainText(in.readAll());
+  curTextPage()->getTextPage()->setPlainText(in.readAll());
   QApplication::restoreOverrideCursor();
   slotCurPageTextEdit()->setFilePath(fileName);
   tabWidget->setTabText(tabWidget->currentIndex(), strippedName(fileName));
@@ -445,7 +441,7 @@ void TextEdit::slotPrint() {
 #ifndef QT_NO_PRINTER
   QTextDocument* document;
   if (curTextPage() != nullptr) {
-    document = curTextPage()->document();
+    document = curTextPage()->getTextPage()->document();
   }
   QPrinter printer;
 
@@ -464,7 +460,7 @@ void TextEdit::slotShowModified() const {
   QString title = tabWidget->tabText(index);
   // if doc is modified now, add leading * to title,
   // otherwise remove the leading * from the title
-  if (curTextPage()->document()->isModified()) {
+  if (curTextPage()->getTextPage()->document()->isModified()) {
     tabWidget->setTabText(index, title.prepend("* "));
   } else {
     tabWidget->setTabText(index, title.remove(0, 2));
@@ -494,7 +490,7 @@ QHash<int, QString> TextEdit::unsavedDocuments() const {
                                     // gedit like "unsaved changed"-dialog
 
   for (int i = 0; i < tabWidget->count(); i++) {
-    auto* ep = qobject_cast<EditorPage*>(tabWidget->widget(i));
+    auto* ep = qobject_cast<PlainTextEditorPage*>(tabWidget->widget(i));
     if (ep != nullptr && ep->ReadDone() &&
         ep->getTextPage()->document()->isModified()) {
       QString doc_name = tabWidget->tabText(i);
@@ -513,7 +509,7 @@ void TextEdit::slotCut() const {
     return;
   }
 
-  curTextPage()->cut();
+  curTextPage()->getTextPage()->cut();
 }
 
 void TextEdit::slotCopy() const {
@@ -522,7 +518,7 @@ void TextEdit::slotCopy() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->copy();
+    curTextPage()->getTextPage()->copy();
   }
 }
 
@@ -531,7 +527,7 @@ void TextEdit::slotPaste() const {
     return;
   }
 
-  curTextPage()->paste();
+  curTextPage()->getTextPage()->paste();
 }
 
 void TextEdit::slotUndo() const {
@@ -539,7 +535,7 @@ void TextEdit::slotUndo() const {
     return;
   }
 
-  curTextPage()->undo();
+  curTextPage()->getTextPage()->undo();
 }
 
 void TextEdit::slotRedo() const {
@@ -547,7 +543,7 @@ void TextEdit::slotRedo() const {
     return;
   }
 
-  curTextPage()->redo();
+  curTextPage()->getTextPage()->redo();
 }
 
 void TextEdit::slotZoomIn() const {
@@ -556,7 +552,7 @@ void TextEdit::slotZoomIn() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->zoomIn();
+    curTextPage()->getTextPage()->zoomIn();
   }
 }
 
@@ -566,7 +562,7 @@ void TextEdit::slotZoomOut() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->zoomOut();
+    curTextPage()->getTextPage()->zoomOut();
   }
 }
 
@@ -574,7 +570,7 @@ void TextEdit::slotSelectAll() const {
   if (tabWidget->count() == 0 || curTextPage() == nullptr) {
     return;
   }
-  curTextPage()->selectAll();
+  curTextPage()->getTextPage()->selectAll();
 }
 
 void TextEdit::slotFilePagePathChanged(const QString& path) const {