add FileIO interface for QML plugins

musescore · Jul 15, 2012 · 53f6f8d · 53f6f8d
1 parent a419129
commit 53f6f8d
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Showing 2 changed files with 85 additions and 10 deletions.
diff --git a/mscore/plugins.cpp b/mscore/plugins.cpp
@@ -158,7 +158,7 @@ QDeclarativeEngine* MuseScore::qml()
             //-----------some qt bindings
             _qml = new QDeclarativeEngine;
             qmlRegisterType<MsProcess>  ("MuseScore", 1, 0, "QProcess");
-            qmlRegisterType<MsFile>     ("MuseScore", 1, 0, "QFile");
+            qmlRegisterType<FileIO, 1>  ("FileIO", 1, 0, "FileIO");
             //-----------mscore bindings
             qmlRegisterType<MScore>     ("MuseScore", 1, 0, "MScore");
             qmlRegisterType<MsScoreView>("MuseScore", 1, 0, "ScoreView");
@@ -444,6 +444,65 @@ MsScoreView::MsScoreView(QDeclarativeItem* parent)
       score = 0;
       }
 
+//---------------------------------------------------------
+//   @@ FileIO
+//---------------------------------------------------------
+
+FileIO::FileIO(QObject *parent) :
+    QObject(parent)
+      {
+
+      }
+
+QString FileIO::read()
+      {
+      if (mSource.isEmpty()) {
+            emit error("source is empty");
+            return QString();
+            }
+
+      QFile file(mSource);
+      QString fileContent;
+      if ( file.open(QIODevice::ReadOnly) ) {
+            QString line;
+            QTextStream t( &file );
+            do {
+                line = t.readLine();
+                fileContent += line;
+                } while (!line.isNull());
+            file.close();
+            } 
+      else {
+          emit error("Unable to open the file");
+          return QString();
+          }
+      return fileContent;
+      }
+
+bool FileIO::write(const QString& data)
+      {
+      if (mSource.isEmpty())
+            return false;
+
+      QFile file(mSource);
+      if (!file.open(QFile::WriteOnly | QFile::Truncate))
+            return false;
+
+      QTextStream out(&file);
+      out << data;
+      file.close();
+      return true;
+      }
+
+bool FileIO::remove(const QString& data)
+      {
+      if (mSource.isEmpty())
+            return false;
+
+      QFile file(mSource);
+      return file.remove();
+      }
+
 //---------------------------------------------------------
 //   setScore
 //---------------------------------------------------------

diff --git a/mscore/plugins.h b/mscore/plugins.h
@@ -19,18 +19,35 @@
 #include "libmscore/score.h"
 #include "libmscore/utils.h"
 
-//---------------------------------------------------------
-//   MsFile
-//    @@ QFile
-//---------------------------------------------------------
-
-class MsFile : public QFile {
+class FileIO : public QObject {
       Q_OBJECT
-
+ 
    public:
-      MsFile() : QFile() {}
+      Q_PROPERTY(QString source
+               READ source
+               WRITE setSource
+               NOTIFY sourceChanged)
+      explicit FileIO(QObject *parent = 0);
+
+      Q_INVOKABLE QString read();
+      Q_INVOKABLE bool write(const QString& data);
+      Q_INVOKABLE bool remove(const QString& data);
+      Q_INVOKABLE QString tempPath() {QDir dir; return dir.tempPath();};
+
+      QString source() { return mSource; };
+
+   public slots:
+      void setSource(const QString& source) { mSource = source; };
+
+   signals:
+      void sourceChanged(const QString& source);
+      void error(const QString& msg);
+
+   private:
+      QString mSource;
       };
 
+
 //---------------------------------------------------------
 //   MsProcess
 //    @@ QProcess
@@ -168,7 +185,6 @@ class QmlPlugin : public QDeclarativeItem {
       Q_INVOKABLE Element* newElement(int);
       Q_INVOKABLE void cmd(const QString&);
       Q_INVOKABLE MsProcess* newQProcess() { return new MsProcess(this); }
-      Q_INVOKABLE MsFile* newQFile()       { return new MsFile(); }
       Q_INVOKABLE bool writeScore(Score*, const QString& name, const QString& ext);
       Q_INVOKABLE Score* readScore(const QString& name);
       };