feat: support multi-thraded read fiels.

Change-Id: I50e15a805a1ba2e8f211d591f0ef5b51be21880e

editor/deepin-editor.pro

@@ -27,7 +27,8 @@ HEADERS += src/window.h \
 	   src/themeview.h \
 	   src/themeitem.h \
 	   src/uncommentselection.h \
-	   src/utils.h
+	   src/utils.h \
+           src/fileloadthread.h
 
 SOURCES += src/window.cpp \
            src/startmanager.cpp \
@@ -46,7 +47,8 @@ SOURCES += src/window.cpp \
 	   src/themeview.cpp \
 	   src/themeitem.cpp \
 	   src/uncommentselection.cpp \
-	   src/main.cpp
+	   src/main.cpp \
+           src/fileloadthread.cpp
 
 QT += KSyntaxHighlighting
 QT += core

editor/src/editor.cpp

@@ -23,6 +23,7 @@
 
 #include "editor.h"
 #include "utils.h"
+#include "fileloadthread.h"
 
 #include <QApplication>
 #include <QDebug>
@@ -48,34 +49,22 @@ Editor::Editor(QWidget *parent)
 
 void Editor::loadFile(const QString &filepath)
 {
-    QFile file(filepath);
-
-    if (file.open(QFile::ReadOnly)) {
-        // set mouse status to wait.
-        QApplication::setOverrideCursor(Qt::WaitCursor);
-
-        // reads all remaining data from the file.
-        QByteArray fileContent = file.readAll();
-
-        // read the encode.
-        m_fileEncode = Utils::getFileEncode(fileContent, filepath);
-
-        QTextStream stream(&fileContent);
-        stream.setCodec(m_fileEncode);
-        textEditor->setPlainText(stream.readAll());
-
-        // restore mouse style.
-        QApplication::restoreOverrideCursor();
+    // set mouse status to wait.
+    QApplication::setOverrideCursor(Qt::WaitCursor);
 
-        updatePath(filepath);
-        detectNewline();
+    // update file path.
+    updatePath(filepath);
 
-        qDebug() << QString("Detect file %1 with encoding: %2, line endings: %3").arg(filepath).arg(QString(m_fileEncode)).arg(m_newline);
+    // begin to load the file.
+    FileLoadThread *thread = new FileLoadThread(filepath);
+    connect(thread, &FileLoadThread::loadFinished, this, &Editor::handleFileLoadFinished);
+    connect(thread, &FileLoadThread::finished, thread, &FileLoadThread::deleteLater);
 
-        textEditor->loadHighlighter();
-    }
+    // editing is not allowed during loading.
+    textEditor->setReadOnly(true);
 
-    file.close();
+    // start the thread.
+    thread->start();
 }
 
 bool Editor::saveFile(const QString &encode, const QString &newline)
@@ -176,3 +165,20 @@ void Editor::detectNewline()
 
     file.close();
 }
+
+void Editor::handleFileLoadFinished(const QString &encode, QTextDocument *doc)
+{
+     QPlainTextDocumentLayout *layout = new QPlainTextDocumentLayout(doc);
+     doc->setDocumentLayout(layout);
+     textEditor->setDocument(doc);
+
+    // restore mouse style.
+    QApplication::restoreOverrideCursor();
+
+
+    // update status.
+    textEditor->setReadOnly(false);
+    textEditor->setModified(false);
+
+    // textEditor->loadHighlighter();
+}

editor/src/editor.h

@@ -47,6 +47,7 @@ class Editor : public QWidget
 
 private:
     void detectNewline();
+    void handleFileLoadFinished(const QString &encode, QTextDocument *doc);
 
 private:
     QHBoxLayout *m_layout;

editor/src/fileloadthread.cpp

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
+ *
+ * Author:     rekols <rekols@foxmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "fileloadthread.h"
+#include "utils.h"
+
+#include <QCoreApplication>
+#include <QPlainTextEdit>
+#include <QTextDocument>
+#include <QTextStream>
+#include <QFile>
+
+FileLoadThread::FileLoadThread(const QString &filepath, QObject *parent)
+    : QThread(parent),
+      m_filePath(filepath)
+{
+
+}
+
+FileLoadThread::~FileLoadThread()
+{
+}
+
+void FileLoadThread::run()
+{
+    QFile file(m_filePath);
+
+    if (file.open(QIODevice::ReadOnly)) {
+        // reads all remaining data from the file.
+        QByteArray content = file.readAll();
+
+        // read the encode.
+        QByteArray encode = Utils::getFileEncode(content, m_filePath);
+
+        QTextStream stream(&content);
+        stream.setCodec(encode);
+
+        QTextDocument *doc = new QTextDocument;
+        doc->moveToThread(QCoreApplication::instance()->thread());
+        doc->setPlainText(content);
+
+        emit loadFinished(encode, doc);
+    }
+}

editor/src/fileloadthread.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
+ *
+ * Author:     rekols <rekols@foxmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FILELOADTHREAD_H
+#define FILELOADTHREAD_H
+
+#include <QThread>
+
+class QTextDocument;
+class FileLoadThread : public QThread
+{
+    Q_OBJECT
+
+public:
+    FileLoadThread(const QString &filepath, QObject *QObject = nullptr);
+    ~FileLoadThread();
+
+    void run();
+
+signals:
+    void loadFinished(const QString &encode, QTextDocument *doc);
+
+private:
+    QString m_filePath;
+};
+
+#endif

editor/src/texteditor.cpp

@@ -1990,8 +1990,8 @@ void TextEditor::setTheme(const KSyntaxHighlighting::Theme &theme, QString theme
     m_selectionColor = QColor(jsonMap["editor-colors"].toMap()["selection"].toString());
     m_regionMarkerColor = QColor(theme.textColor(KSyntaxHighlighting::Theme::RegionMarker));
 
-    m_highlighter->setTheme(theme);
-    m_highlighter->rehighlight();
+    // m_highlighter->setTheme(theme);
+    // m_highlighter->rehighlight();
     lineNumberArea->update();
 
     highlightCurrentLine();

editor/src/window.cpp

@@ -64,8 +64,6 @@ Window::Window(DMainWindow *parent)
       m_themeName(m_settings->settings->option("base.theme.default")->value().toString())
 {
     m_blankFileDir = QDir(QStandardPaths::standardLocations(QStandardPaths::DataLocation).first()).filePath("blank-files");
-    m_readonlyFileDir = QDir(QStandardPaths::standardLocations(QStandardPaths::DataLocation).first()).filePath("readonly-files");
-    autoSaveDBus = new DBusDaemon::dbus("com.deepin.editor.daemon", "/", QDBusConnection::systemBus(), this);
 
     // Init.
     installEventFilter(this);

editor/src/window.h

@@ -185,7 +185,6 @@ public slots:
     int m_remberPositionScrollOffset;
 
     QString m_blankFileDir;
-    QString m_readonlyFileDir;
     int m_fontSize;
 
     QString m_titlebarStyleSheet;