add expression builder to custom widgets

src/customwidgets/CMakeLists.txt

@@ -28,6 +28,7 @@ SET (QGIS_CUSTOMWIDGETS_SRCS
   qgsdatetimeeditplugin.cpp
   qgsdatadefinedbuttonplugin.cpp
   qgsdoublespinboxplugin.cpp
+  qgsexpressionbuilderwidgetplugin.cpp
   qgsextentgroupboxplugin.cpp
   qgsfieldcomboboxplugin.cpp
   qgsfieldexpressionwidgetplugin.cpp
@@ -49,6 +50,7 @@ SET (QGIS_CUSTOMWIDGETS_MOC_HDRS
   qgsdatetimeeditplugin.h
   qgsdatadefinedbuttonplugin.h
   qgsdoublespinboxplugin.h
+  qgsexpressionbuilderwidgetplugin.h
   qgsextentgroupboxplugin.h
   qgsfieldcomboboxplugin.h
   qgsfieldexpressionwidgetplugin.h
@@ -76,6 +78,7 @@ SET(QGIS_CUSTOMWIDGETS_HDRS
   qgsdatetimeeditplugin.h
   qgsdatadefinedbuttonplugin.h
   qgsdoublespinboxplugin.h
+  qgsexpressionbuilderwidgetplugin.h
   qgsextentgroupboxplugin.h
   qgsfieldcomboboxplugin.h
   qgsfieldexpressionwidgetplugin.h

src/customwidgets/qgiscustomwidgets.cpp

@@ -23,6 +23,7 @@
 #include "qgsdatadefinedbuttonplugin.h"
 #include "qgsdatetimeeditplugin.h"
 #include "qgsdoublespinboxplugin.h"
+#include "qgsexpressionbuilderwidgetplugin.h"
 #include "qgsextentgroupboxplugin.h"
 #include "qgsfieldcomboboxplugin.h"
 #include "qgsfieldexpressionwidgetplugin.h"
@@ -45,6 +46,7 @@ QgisCustomWidgets::QgisCustomWidgets( QObject *parent )
   mWidgets.append( new QgsDataDefinedButtonPlugin( this ) );
   mWidgets.append( new QgsDateTimeEditPlugin( this ) );
   mWidgets.append( new QgsDoubleSpinBoxPlugin( this ) );
+  mWidgets.append( new QgsExpressionBuilderWidgetPlugin( this ) );
   mWidgets.append( new QgsExtentGroupBoxPlugin( this ) );
   mWidgets.append( new QgsFieldComboBoxPlugin( this ) );
   mWidgets.append( new QgsFieldExpressionWidgetPlugin( this ) );

src/customwidgets/qgsexpressionbuilderwidgetplugin.cpp

@@ -0,0 +1,97 @@
+/***************************************************************************
+   qgsexpressionbuilderwidgetplugin.cpp
+    --------------------------------------
+   Date                 : 03.11.2015
+   Copyright            : (C) 2015 Denis Rouzaud
+   Email                : denis.rouzaud@gmail.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 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+***************************************************************************/
+
+#include "qgiscustomwidgets.h"
+#include "qgsexpressionbuilderwidget.h"
+#include "qgsexpressionbuilderwidgetplugin.h"
+
+
+QgsExpressionBuilderWidgetPlugin::QgsExpressionBuilderWidgetPlugin( QObject *parent )
+    : QObject( parent )
+    , mInitialized( false )
+{
+}
+
+
+QString QgsExpressionBuilderWidgetPlugin::name() const
+{
+  return "QgsExpressionBuilderWidget";
+}
+
+QString QgsExpressionBuilderWidgetPlugin::group() const
+{
+  return QgisCustomWidgets::groupName();
+}
+
+QString QgsExpressionBuilderWidgetPlugin::includeFile() const
+{
+  return "qgsexpressionbuilderwidget.h";
+}
+
+QIcon QgsExpressionBuilderWidgetPlugin::icon() const
+{
+  return QIcon();
+}
+
+bool QgsExpressionBuilderWidgetPlugin::isContainer() const
+{
+  return true;
+}
+
+QWidget *QgsExpressionBuilderWidgetPlugin::createWidget( QWidget *parent )
+{
+  return new QgsExpressionBuilderWidget( parent );
+}
+
+bool QgsExpressionBuilderWidgetPlugin::isInitialized() const
+{
+  return mInitialized;
+}
+
+void QgsExpressionBuilderWidgetPlugin::initialize( QDesignerFormEditorInterface *core )
+{
+  Q_UNUSED( core );
+  if ( mInitialized )
+    return;
+  mInitialized = true;
+}
+
+
+QString QgsExpressionBuilderWidgetPlugin::toolTip() const
+{
+  return tr( "Edit expression" );
+}
+
+QString QgsExpressionBuilderWidgetPlugin::whatsThis() const
+{
+  return tr( "Edit expression" );
+}
+
+QString QgsExpressionBuilderWidgetPlugin::domXml() const
+{
+  return QString( "<ui language=\"c++\">\n"
+                  " <widget class=\"%1\" name=\"mExpressionBuilderWidget\">\n"
+                  "  <property name=\"geometry\">\n"
+                  "   <rect>\n"
+                  "    <x>0</x>\n"
+                  "    <y>0</y>\n"
+                  "    <width>700</width>\n"
+                  "    <height>400</height>\n"
+                  "   </rect>\n"
+                  "  </property>\n"
+                  " </widget>\n"
+                  "</ui>\n" )
+         .arg( name() );
+}

src/customwidgets/qgsexpressionbuilderwidgetplugin.h

@@ -0,0 +1,48 @@
+/***************************************************************************
+   qgsexpressionbuilderwidgetplugin.h
+    --------------------------------------
+   Date                 : 03.11.2015
+   Copyright            : (C) 2015 Denis Rouzaud
+   Email                : denis.rouzaud@gmail.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 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+***************************************************************************/
+
+#ifndef QGSEXPRESSIONBUILDERWIDGETPLUGIN_H
+#define QGSEXPRESSIONBUILDERWIDGETPLUGIN_H
+
+#include <QDesignerExportWidget>
+#include <QDesignerCustomWidgetInterface>
+
+
+class CUSTOMWIDGETS_EXPORT QgsExpressionBuilderWidgetPlugin : public QObject, public QDesignerCustomWidgetInterface
+{
+    Q_OBJECT
+    Q_INTERFACES( QDesignerCustomWidgetInterface )
+
+  public:
+    explicit QgsExpressionBuilderWidgetPlugin( QObject *parent = 0 );
+
+  private:
+    bool mInitialized;
+
+    // QDesignerCustomWidgetInterface interface
+  public:
+    QString name() const override;
+    QString group() const override;
+    QString includeFile() const override;
+    QIcon icon() const override;
+    bool isContainer() const override;
+    QWidget *createWidget( QWidget *parent ) override;
+    bool isInitialized() const override;
+    void initialize( QDesignerFormEditorInterface *core ) override;
+    QString toolTip() const override;
+    QString whatsThis() const override;
+    QString domXml() const override;
+};
+#endif // QGSEXPRESSIONBUILDERWIDGETPLUGIN_H