From bec9268ba3913be25d0da27b653cc7ba13e698e5 Mon Sep 17 00:00:00 2001
From: Markus Lampert <markus@bibi.ca>
Date: Fri, 6 Oct 2017 17:16:03 -0700
Subject: [PATCH] Added boundTo as a property to QuantitySpinBox to enable
 binding from Python.

---
 src/Gui/ExpressionBinding.h |  2 +-
 src/Gui/QuantitySpinBox.cpp | 44 +++++++++++++++++++++++++++++++++++++
 src/Gui/QuantitySpinBox.h   |  6 +++++
 3 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/src/Gui/ExpressionBinding.h b/src/Gui/ExpressionBinding.h
index b794447aa1..8280dec18d 100644
--- a/src/Gui/ExpressionBinding.h
+++ b/src/Gui/ExpressionBinding.h
@@ -50,7 +50,7 @@ public:
 
     QPixmap getIcon(const char *name, const QSize &size) const;
    
-    //auto apply means that the python code is issues not only on aplly() but 
+    //auto apply means that the python code is issued not only on apply() but 
     //also on setExpression
     bool autoApply() const {return m_autoApply;};
     void setAutoApply(bool value) {m_autoApply = value;};
diff --git a/src/Gui/QuantitySpinBox.cpp b/src/Gui/QuantitySpinBox.cpp
index 32a0bbd4ca..ce9a81eea8 100644
--- a/src/Gui/QuantitySpinBox.cpp
+++ b/src/Gui/QuantitySpinBox.cpp
@@ -43,6 +43,9 @@
 #include "Command.h"
 #include <Base/Tools.h>
 #include <Base/Exception.h>
+#include <App/Application.h>
+#include <App/Document.h>
+#include <App/DocumentObject.h>
 #include <App/Expression.h>
 #include <sstream>
 #include <boost/math/special_functions/round.hpp>
@@ -284,6 +287,47 @@ void Gui::QuantitySpinBox::setExpression(boost::shared_ptr<Expression> expr)
     }
 }
 
+QString QuantitySpinBox::boundToName() const
+{
+    Q_D(const QuantitySpinBox);
+    if (isBound()) {
+        std::string path = getPath().toString();
+        return QString::fromStdString(path);
+    }
+    return QString();
+}
+
+void QuantitySpinBox::setBoundToByName(const QString &qstr)
+{
+    Q_D(QuantitySpinBox);
+    std::string name = qstr.toStdString();
+    size_t pos = name.rfind('.');
+    if (std::string::npos != pos && 0 != pos) {
+        std::string objName = name.substr(0, pos);
+        std::string prpName = name.substr(pos+1);
+        App::Document *doc = App::GetApplication().getActiveDocument();
+        if (doc) {
+            App::DocumentObject *obj = doc->getObject(objName.c_str());
+            if (obj) {
+                App::Property *prop = obj->getPropertyByName(prpName.c_str());
+                if (prop) {
+                    App::ObjectIdentifier path(*prop);
+                    path.setDocumentObjectName(objName, true);
+                    bind(path);
+                } else {
+                    printf("%s.%s('%s', '%s'): no prop\n", __FILE__, __FUNCTION__, objName.c_str(), prpName.c_str());
+                }
+            } else {
+                printf("%s.%s('%s', '%s'): no obj\n", __FILE__, __FUNCTION__, objName.c_str(), prpName.c_str());
+            }
+        } else {
+            printf("%s.%s('%s', '%s'): no doc\n", __FILE__, __FUNCTION__, objName.c_str(), prpName.c_str());
+        }
+    } else {
+        printf("%s.%s(%s'): invalid name\n", __FILE__, __FUNCTION__, name.c_str());
+    }
+}
+
 void Gui::QuantitySpinBox::onChange() {
     
     Q_ASSERT(isBound());
diff --git a/src/Gui/QuantitySpinBox.h b/src/Gui/QuantitySpinBox.h
index a7fdbf0b8e..4041d29492 100644
--- a/src/Gui/QuantitySpinBox.h
+++ b/src/Gui/QuantitySpinBox.h
@@ -45,6 +45,7 @@ class GuiExport QuantitySpinBox : public QAbstractSpinBox, public ExpressionBind
     Q_PROPERTY(double singleStep READ singleStep WRITE setSingleStep)
     Q_PROPERTY(double rawValue READ rawValue WRITE setValue NOTIFY valueChanged)
     Q_PROPERTY(Base::Quantity value READ value WRITE setValue NOTIFY valueChanged USER true)
+    Q_PROPERTY(QString boundTo READ boundToName WRITE setBoundToByName)
 
 public:
     using ExpressionBinding::apply;
@@ -89,6 +90,11 @@ public:
     /// Sets the value of the maximum property 
     void setMaximum(double max);
 
+    /// Gets the path of the bound property
+    QString boundToName() const;
+    /// Sets the path of the bound property
+    void setBoundToByName(const QString &path);
+
     /// Set the number portion selected
     void selectNumber();