Add wxSpinCtrl::GetTextValue()

This allows to retrieve the current contents of the text entry part of
wxSpinCtrl.

For now provide a stub in the base class, will be made pure virtual
later.

Co-Authored-By: Vadim Zeitlin <vadim@wxwidgets.org>

include/wx/generic/spinctlg.h

@@ -60,6 +60,7 @@ public:
     virtual ~wxSpinCtrlGenericBase();
 
     // accessors
+    virtual wxString GetTextValue() const wxOVERRIDE;
     // T GetValue() const
     // T GetMin() const
     // T GetMax() const

include/wx/gtk/spinctrl.h

@@ -35,6 +35,7 @@ public:
     // wxSpinCtrl(Double) methods call DoXXX functions of the same name
 
     // accessors
+    virtual wxString GetTextValue() const wxOVERRIDE;
     // T GetValue() const
     // T GetMin() const
     // T GetMax() const

include/wx/msw/spinctrl.h

@@ -62,6 +62,7 @@ public:
     void SetSelection(long from, long to);
 
     // wxSpinCtrlBase methods
+    virtual wxString GetTextValue() const;
     virtual int GetBase() const;
     virtual bool SetBase(int base);
 

include/wx/spinctrl.h

@@ -35,6 +35,7 @@ public:
     wxSpinCtrlBase() {}
 
     // accessor functions that derived classes are expected to have
+    virtual wxString GetTextValue() const { return wxString(); }
     // T GetValue() const
     // T GetMin() const
     // T GetMax() const

interface/wx/spinctrl.h

@@ -133,6 +133,13 @@ public:
     */
     int GetMin() const;
 
+    /**
+        Returns the text in the text entry part of the control.
+
+        @since 3.1.6
+    */
+    wxString GetTextValue() const;
+
     /**
         Gets the value of the spin control.
     */
@@ -315,6 +322,13 @@ public:
     */
     double GetMin() const;
 
+    /**
+        Returns the text in the text entry part of the control.
+
+        @since 3.1.6
+    */
+    wxString GetTextValue() const;
+
     /**
         Gets the value of the spin control.
     */

src/generic/spinctlg.cpp

@@ -506,6 +506,11 @@ bool wxSpinCtrlGenericBase::SyncSpinToText(SendEvent sendEvent)
 // changing value and range
 // ----------------------------------------------------------------------------
 
+wxString wxSpinCtrlGenericBase::GetTextValue() const
+{
+    return m_textCtrl ? m_textCtrl->GetValue() : wxString();
+}
+
 void wxSpinCtrlGenericBase::SetValue(const wxString& text)
 {
     wxCHECK_RET( m_textCtrl, wxT("invalid call to wxSpinCtrl::SetValue") );

src/gtk/spinctrl.cpp

@@ -214,6 +214,13 @@ double wxSpinCtrlGTKBase::DoGetIncrement() const
     return inc;
 }
 
+wxString wxSpinCtrlGTKBase::GetTextValue() const
+{
+    wxCHECK_MSG(m_widget, wxEmptyString, "invalid spin button");
+
+    return gtk_entry_get_text( GTK_ENTRY(m_widget) );
+}
+
 bool wxSpinCtrlGTKBase::GetSnapToTicks() const
 {
     wxCHECK_MSG(m_widget, false, "invalid spin button");

src/msw/spinctrl.cpp

@@ -442,6 +442,11 @@ bool wxSpinCtrl::SetBase(int base)
 // wxTextCtrl-like methods
 // ----------------------------------------------------------------------------
 
+wxString wxSpinCtrl::GetTextValue() const
+{
+    return wxGetWindowText(m_hwndBuddy);
+}
+
 void wxSpinCtrl::SetValue(const wxString& text)
 {
     if ( !::SetWindowText(GetBuddyHwnd(), text.c_str()) )