diff --git a/dde-dock/dde-dock.pro b/dde-dock/dde-dock.pro
index e0be30f48..ddd0f5af4 100644
--- a/dde-dock/dde-dock.pro
+++ b/dde-dock/dde-dock.pro
@@ -24,7 +24,6 @@ SOURCES += \
     src/Widgets/appitem.cpp \
     src/Panel/panelmenu.cpp \
     src/Controller/dockmodedata.cpp \
-    src/Controller/dockconstants.cpp \
     src/Controller/appmanager.cpp \
     src/DBus/dbusentrymanager.cpp \
     src/DBus/dbusentryproxyer.cpp \
@@ -52,7 +51,6 @@ HEADERS  += \
     src/Widgets/appitem.h \
     src/Panel/panelmenu.h \
     src/Controller/dockmodedata.h \
-    src/Controller/dockconstants.h \
     src/Controller/appmanager.h \
     src/DBus/dbusentrymanager.h \
     src/DBus/dbusentryproxyer.h \
@@ -64,9 +62,10 @@ HEADERS  += \
     src/Widgets/arrowrectangle.h\
     src/dockpluginproxyinterface.h \
     src/dockpluginproxy.h \
-    src/dockpluginmanager.h\
     src/DBus/dbusmenumanager.h \
-    src/DBus/dbusmenu.h
+    src/DBus/dbusmenu.h \
+    src/dockpluginmanager.h \
+    src/dockconstants.h
 
 RESOURCES += \
     images.qrc \
diff --git a/dde-dock/src/Controller/dockconstants.cpp b/dde-dock/src/Controller/dockconstants.cpp
deleted file mode 100644
index d4b23f0bf..000000000
--- a/dde-dock/src/Controller/dockconstants.cpp
+++ /dev/null
@@ -1,7 +0,0 @@
-#include "dockconstants.h"
-
-DockConstants::DockConstants(QObject *parent) : QObject(parent)
-{
-
-}
-
diff --git a/dde-dock/src/Controller/dockconstants.h b/dde-dock/src/Controller/dockconstants.h
deleted file mode 100644
index 4f23a4527..000000000
--- a/dde-dock/src/Controller/dockconstants.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef DOCKCONSTANTS_H
-#define DOCKCONSTANTS_H
-
-#include <QObject>
-
-class DockConstants : public QObject
-{
-    Q_OBJECT
-public:
-    explicit DockConstants(QObject *parent = 0);
-
-    enum DockMode {
-        FashionMode,
-        EfficientMode,
-        ClassicMode
-    };
-
-signals:
-
-public slots:
-};
-
-#endif // DOCKCONSTANTS_H
diff --git a/dde-dock/src/Controller/dockmodedata.cpp b/dde-dock/src/Controller/dockmodedata.cpp
index cbcfb2ebf..9bee6cb57 100644
--- a/dde-dock/src/Controller/dockmodedata.cpp
+++ b/dde-dock/src/Controller/dockmodedata.cpp
@@ -14,14 +14,14 @@ DockModeData * DockModeData::getInstants()
     return dockModeData;
 }
 
-DockConstants::DockMode DockModeData::getDockMode()
+Dock::DockMode DockModeData::getDockMode()
 {
   return m_currentMode;
 }
 
-void DockModeData::setDockMode(DockConstants::DockMode value)
+void DockModeData::setDockMode(Dock::DockMode value)
 {
-    DockConstants::DockMode tmpValue = m_currentMode;
+    Dock::DockMode tmpValue = m_currentMode;
     m_currentMode = value;
 
     emit dockModeChanged(value, tmpValue);
@@ -31,11 +31,11 @@ int DockModeData::getDockHeight()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 50;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 40;
     default:
         return 40;
@@ -46,11 +46,11 @@ int DockModeData::getItemHeight()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 50;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 40;
     default:
         return 40;
@@ -61,11 +61,11 @@ int DockModeData::getNormalItemWidth()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 60;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 40;
     default:
         return 40;
@@ -76,11 +76,11 @@ int DockModeData::getActivedItemWidth()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 60;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 150;
     default:
         return 60;
@@ -91,11 +91,11 @@ int DockModeData::getAppItemSpacing()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 10;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 15;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 8;
     default:
         return 8;
@@ -106,11 +106,11 @@ int DockModeData::getAppIconSize()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 48;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 48;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 32;
     default:
         return 32;
@@ -121,11 +121,11 @@ int DockModeData::getAppletsItemHeight()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 50;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 40;
     default:
         return 40;
@@ -136,11 +136,11 @@ int DockModeData::getAppletsItemWidth()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 60;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 50;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 50;
     default:
         return 50;
@@ -151,11 +151,11 @@ int DockModeData::getAppletsItemSpacing()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 10;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 10;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 10;
     default:
         return 10;
@@ -166,11 +166,11 @@ int DockModeData::getAppletsIconSize()
 {
     switch (m_currentMode)
     {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         return 48;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         return 24;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         return 24;
     default:
         return 24;
diff --git a/dde-dock/src/Controller/dockmodedata.h b/dde-dock/src/Controller/dockmodedata.h
index 8f6250273..70ef7c0e0 100644
--- a/dde-dock/src/Controller/dockmodedata.h
+++ b/dde-dock/src/Controller/dockmodedata.h
@@ -11,8 +11,8 @@ class DockModeData : public QObject
 public:
     static DockModeData * getInstants();
 
-    DockConstants::DockMode getDockMode();
-    void setDockMode(DockConstants::DockMode value);
+    Dock::DockMode getDockMode();
+    void setDockMode(Dock::DockMode value);
 
     int getDockHeight();
     int getItemHeight();
@@ -26,7 +26,7 @@ public:
     int getAppletsIconSize();
 
 signals:
-    void dockModeChanged(DockConstants::DockMode newMode,DockConstants::DockMode oldMode);
+    void dockModeChanged(Dock::DockMode newMode,Dock::DockMode oldMode);
 
 private:
     explicit DockModeData(QObject *parent = 0);
@@ -34,7 +34,7 @@ private:
 private:
     static DockModeData * dockModeData;
 
-    DockConstants::DockMode m_currentMode = DockConstants::EfficientMode;
+    Dock::DockMode m_currentMode = Dock::EfficientMode;
 
 };
 
diff --git a/dde-dock/src/Panel/panel.cpp b/dde-dock/src/Panel/panel.cpp
index 003934a33..6df49c51a 100644
--- a/dde-dock/src/Panel/panel.cpp
+++ b/dde-dock/src/Panel/panel.cpp
@@ -23,8 +23,8 @@ Panel::Panel(QWidget *parent)
     connect(leftLayout, SIGNAL(contentsWidthChange()),this, SLOT(slotLayoutContentsWidthChanged()));
     connect(rightLayout, SIGNAL(contentsWidthChange()), this, SLOT(slotLayoutContentsWidthChanged()));
 
-    connect(dockCons, SIGNAL(dockModeChanged(DockConstants::DockMode,DockConstants::DockMode)),
-            this, SLOT(slotDockModeChanged(DockConstants::DockMode,DockConstants::DockMode)));
+    connect(dockCons, SIGNAL(dockModeChanged(Dock::DockMode,Dock::DockMode)),
+            this, SLOT(slotDockModeChanged(Dock::DockMode,Dock::DockMode)));
 
     DockPluginManager *pluginManager = new DockPluginManager(this);
     QList<DockPluginProxy*> proxies = pluginManager->getAll();
@@ -99,7 +99,7 @@ void Panel::slotExitedMask()
 //    leftLayout->relayout();
 }
 
-void Panel::slotDockModeChanged(DockConstants::DockMode newMode, DockConstants::DockMode oldMode)
+void Panel::slotDockModeChanged(Dock::DockMode newMode, Dock::DockMode oldMode)
 {
     leftLayout->relayout();
     rightLayout->relayout();
@@ -115,7 +115,7 @@ void Panel::slotLayoutContentsWidthChanged()
 {
     reanchorsLayout(dockCons->getDockMode());
 
-    if (dockCons->getDockMode() == DockConstants::FashionMode)
+    if (dockCons->getDockMode() == Dock::FashionMode)
     {
         this->resize(leftLayout->getContentsWidth() + rightLayout->getContentsWidth(),dockCons->getDockHeight());
         this->move((parentWidget->width() - leftLayout->getContentsWidth() - rightLayout->getContentsWidth()) / 2,0);
@@ -158,9 +158,9 @@ void Panel::mouseReleaseEvent(QMouseEvent *event)
 
 }
 
-void Panel::reanchorsLayout(DockConstants::DockMode mode)
+void Panel::reanchorsLayout(Dock::DockMode mode)
 {
-    if (mode == DockConstants::FashionMode)
+    if (mode == Dock::FashionMode)
     {
         leftLayout->resize(leftLayout->getContentsWidth() + dockCons->getAppItemSpacing(),dockCons->getDockHeight());
 
diff --git a/dde-dock/src/Panel/panel.h b/dde-dock/src/Panel/panel.h
index c3ce5d0d8..b039898a3 100644
--- a/dde-dock/src/Panel/panel.h
+++ b/dde-dock/src/Panel/panel.h
@@ -32,7 +32,7 @@ public slots:
     void slotExitedMask();
 
 private slots:
-    void slotDockModeChanged(DockConstants::DockMode newMode,DockConstants::DockMode oldMode);
+    void slotDockModeChanged(Dock::DockMode newMode,Dock::DockMode oldMode);
     void slotLayoutContentsWidthChanged();
 
     void slotAddAppItem(AppItem *item);
@@ -43,7 +43,7 @@ protected:
     void mouseReleaseEvent(QMouseEvent *event);
 
 private:
-    void reanchorsLayout(DockConstants::DockMode mode);
+    void reanchorsLayout(Dock::DockMode mode);
 
     void showMenu();
     void hideMenu();
diff --git a/dde-dock/src/Panel/panelmenu.cpp b/dde-dock/src/Panel/panelmenu.cpp
index d06aa233b..7c974b840 100644
--- a/dde-dock/src/Panel/panelmenu.cpp
+++ b/dde-dock/src/Panel/panelmenu.cpp
@@ -44,20 +44,20 @@ PanelMenu::PanelMenu(QWidget *parent) : QWidget(parent)
 void PanelMenu::changeToFashionMode()
 {
     qWarning() << "Change to fashion mode...";
-    dockCons->setDockMode(DockConstants::FashionMode);
+    dockCons->setDockMode(Dock::FashionMode);
     this->hide();
 }
 
 void PanelMenu::changeToEfficientMode()
 {
     qWarning() << "Change to efficient mode...";
-    dockCons->setDockMode(DockConstants::EfficientMode);
+    dockCons->setDockMode(Dock::EfficientMode);
     this->hide();
 }
 
 void PanelMenu::changeToClassicMode()
 {
     qWarning() << "Change to classic mode...";
-    dockCons->setDockMode(DockConstants::ClassicMode);
+    dockCons->setDockMode(Dock::ClassicMode);
     this->hide();
 }
diff --git a/dde-dock/src/Widgets/appitem.cpp b/dde-dock/src/Widgets/appitem.cpp
index 66715eefa..ca6bfd5aa 100644
--- a/dde-dock/src/Widgets/appitem.cpp
+++ b/dde-dock/src/Widgets/appitem.cpp
@@ -36,9 +36,9 @@ AppItemData AppItem::itemData() const
     return m_itemData;
 }
 
-void AppItem::slotDockModeChanged(DockConstants::DockMode newMode, DockConstants::DockMode oldMode)
+void AppItem::slotDockModeChanged(Dock::DockMode newMode, Dock::DockMode oldMode)
 {
-    if (newMode == DockConstants::FashionMode)
+    if (newMode == Dock::FashionMode)
     {
         appBackground->setVisible(false);
     }
@@ -54,13 +54,13 @@ void AppItem::slotDockModeChanged(DockConstants::DockMode newMode, DockConstants
 void AppItem::reanchorIcon()
 {
     switch (dockCons->getDockMode()) {
-    case DockConstants::FashionMode:
+    case Dock::FashionMode:
         m_appIcon->move((width() - m_appIcon->width()) / 2, 0);
         break;
-    case DockConstants::EfficientMode:
+    case Dock::EfficientMode:
         m_appIcon->move((width() - m_appIcon->width()) / 2, (height() - m_appIcon->height()) / 2);
         break;
-    case DockConstants::ClassicMode:
+    case Dock::ClassicMode:
         m_appIcon->move((height() - m_appIcon->height()) / 2, (height() - m_appIcon->height()) / 2);
     default:
         break;
diff --git a/dde-dock/src/Widgets/appitem.h b/dde-dock/src/Widgets/appitem.h
index 853236839..0d3ba5ce2 100644
--- a/dde-dock/src/Widgets/appitem.h
+++ b/dde-dock/src/Widgets/appitem.h
@@ -60,7 +60,7 @@ protected:
     void dropEvent(QDropEvent * event);
 
 private slots:
-    void slotDockModeChanged(DockConstants::DockMode newMode,DockConstants::DockMode oldMode);
+    void slotDockModeChanged(Dock::DockMode newMode,Dock::DockMode oldMode);
     void reanchorIcon();
     void resizeBackground();
     void dbusDataChanged(const QString &key, const QString &value);
diff --git a/dde-dock/src/dockconstants.h b/dde-dock/src/dockconstants.h
new file mode 100644
index 000000000..bd614ee75
--- /dev/null
+++ b/dde-dock/src/dockconstants.h
@@ -0,0 +1,14 @@
+#ifndef DOCKCONSTANTS_H
+#define DOCKCONSTANTS_H
+
+namespace Dock {
+
+enum DockMode {
+    FashionMode,
+    EfficientMode,
+    ClassicMode
+};
+
+}
+
+#endif // DOCKCONSTANTS_H
diff --git a/dde-dock/src/mainwidget.cpp b/dde-dock/src/mainwidget.cpp
index d2369ef47..cb0143e67 100644
--- a/dde-dock/src/mainwidget.cpp
+++ b/dde-dock/src/mainwidget.cpp
@@ -13,11 +13,11 @@ MainWidget::MainWidget(QWidget *parent)
     this->setAttribute(Qt::WA_TranslucentBackground);
     this->move(0,rec.height());
 
-    connect(DockModeData::getInstants(), SIGNAL(dockModeChanged(DockConstants::DockMode,DockConstants::DockMode)),
-            this, SLOT(slotDockModeChanged(DockConstants::DockMode,DockConstants::DockMode)));
+    connect(DockModeData::getInstants(), SIGNAL(dockModeChanged(Dock::DockMode,Dock::DockMode)),
+            this, SLOT(slotDockModeChanged(Dock::DockMode,Dock::DockMode)));
 }
 
-void MainWidget::slotDockModeChanged(DockConstants::DockMode newMode, DockConstants::DockMode oldMode)
+void MainWidget::slotDockModeChanged(Dock::DockMode newMode, Dock::DockMode oldMode)
 {
     QRect rec = QApplication::desktop()->screenGeometry();
     this->resize(rec.width(),DockModeData::getInstants()->getDockHeight());
diff --git a/dde-dock/src/mainwidget.h b/dde-dock/src/mainwidget.h
index 5a2d86abb..93be19a19 100644
--- a/dde-dock/src/mainwidget.h
+++ b/dde-dock/src/mainwidget.h
@@ -18,7 +18,7 @@ public:
     ~MainWidget();
 
 public slots:
-    void slotDockModeChanged(DockConstants::DockMode newMode,DockConstants::DockMode oldMode);
+    void slotDockModeChanged(Dock::DockMode newMode,Dock::DockMode oldMode);
 
 private:
     Panel *mainPanel = NULL;