Add support for contents() to BinEditorDocument

Change-Id: I41c7541984ecc5128c8d742ee44f8b3227c671b6
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/bineditor/bineditor.h

@@ -63,6 +63,8 @@ public:
 
     Q_INVOKABLE void setSizes(quint64 startAddr, int range, int blockSize = 4096);
     int dataBlockSize() const { return m_blockSize; }
+    QByteArray contents() const { return dataMid(0, m_size); }
+
     Q_INVOKABLE void addData(quint64 block, const QByteArray &data);
 
     bool newWindowRequestAllowed() const { return m_canRequestNewWindow; }

src/plugins/bineditor/bineditorplugin.cpp

@@ -232,13 +232,19 @@ public:
             this, SLOT(provideData(quint64)));
         connect(m_widget, SIGNAL(newRangeRequested(quint64)),
             this, SLOT(provideNewRange(quint64)));
+        connect(m_widget, &BinEditorWidget::dataChanged, this, &IDocument::contentsChanged);
+    }
+
+    QByteArray contents() const override
+    {
+        return m_widget->contents();
     }
 
     bool setContents(const QByteArray &contents) override
     {
-        if (!contents.isEmpty())
-            return false;
         m_widget->clear();
+        m_widget->setSizes(0, contents.length(), contents.length());
+        m_widget->addData(0, contents);
         return true;
     }