[glom] Details: Really make non-editable multiline text fields non-editable.

[Murray Cumming <murrayc src gnome org>]

commit fbc863107de4f422667ef3b9f6357f1395d3519c
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Dec 30 09:46:52 2011 +0100

    Details: Really make non-editable multiline text fields non-editable.
    
    * glom/mode_data/datawidget/textview.[h|cc]: Override set_read_only(),
    so that multiline text fields are really non-editable when the formatting
      specifies that.

 ChangeLog                               |    8 ++++++
 glom/mode_data/datawidget/datawidget.cc |   41 +++++++++++++++++++++----------
 glom/mode_data/datawidget/textview.cc   |    5 ++++
 glom/mode_data/datawidget/textview.h    |    2 +
 4 files changed, 43 insertions(+), 13 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index f648b54..2425da5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2011-12-30  Murray Cumming  <murrayc murrayc com>
+
+  Details: Really make non-editable multiline text fields non-editable.
+  
+	* glom/mode_data/datawidget/textview.[h|cc]: Override set_read_only(),
+	so that multiline text fields are really non-editable when the formatting
+  specifies that.
+
 2011-12-29  Murray Cumming  <murrayc murrayc com>
 
 	App_WithDoc_Gtk: Simple clipboard menu handlers: Handle GtkTextView
diff --git a/glom/mode_data/datawidget/datawidget.cc b/glom/mode_data/datawidget/datawidget.cc
index 37d6cdf..7b05c04 100644
--- a/glom/mode_data/datawidget/datawidget.cc
+++ b/glom/mode_data/datawidget/datawidget.cc
@@ -386,21 +386,36 @@ void DataWidget::set_viewable(bool viewable)
 void DataWidget::set_editable(bool editable)
 {
   Gtk::Widget* child = get_data_child_widget();
-  Gtk::Entry* entry = dynamic_cast<Gtk::Entry*>(child);
-  if(entry)
-    entry->set_editable(editable);
-  else
+  Gtk::Editable* gtkeditable = dynamic_cast<Gtk::Editable*>(child);
+  if(gtkeditable)
   {
-    LayoutWidgetBase* base = dynamic_cast<LayoutWidgetBase*>(child);
-    if(base)
-      base->set_read_only(!editable);
-    else
-    {
-      Gtk::CheckButton* checkbutton = dynamic_cast<Gtk::CheckButton*>(child);
-      if(checkbutton)
-        checkbutton->set_sensitive(editable);
-    }
+    gtkeditable->set_editable(editable);
+    return;
+  }
+  
+  //GtkTextView does not implement GtkEditable:
+  //See https://bugzilla.gnome.org/show_bug.cgi?id=667008
+  //and our TextView class actually derives from ScrolledView anyway,
+  //and out LayoutWidgetBase::set_read_only() override takes care of it instead.
+  //But let's leave this here just in case:
+  Gtk::TextView* textview = 
+    dynamic_cast<Gtk::TextView*>(child);
+  if(textview)
+  {
+    textview->set_editable(editable);
+    return;
+  }
+  
+  LayoutWidgetBase* base = dynamic_cast<LayoutWidgetBase*>(child);
+  if(base)
+  {
+    base->set_read_only(!editable);
+    return;
   }
+
+  Gtk::CheckButton* checkbutton = dynamic_cast<Gtk::CheckButton*>(child);
+  if(checkbutton)
+    checkbutton->set_sensitive(editable);
 }
 
 #ifndef GLOM_ENABLE_CLIENT_ONLY
diff --git a/glom/mode_data/datawidget/textview.cc b/glom/mode_data/datawidget/textview.cc
index 603546f..2f92a78 100644
--- a/glom/mode_data/datawidget/textview.cc
+++ b/glom/mode_data/datawidget/textview.cc
@@ -221,5 +221,10 @@ TextView::type_text_view* TextView::get_textview()
   return &m_TextView;
 }
 
+void TextView::set_read_only(bool read_only)
+{
+  m_TextView.set_editable(!read_only);
+}
+
 } //namespace DataWidetChildren
 } //namespace Glom
diff --git a/glom/mode_data/datawidget/textview.h b/glom/mode_data/datawidget/textview.h
index f6caa3c..d9c051b 100644
--- a/glom/mode_data/datawidget/textview.h
+++ b/glom/mode_data/datawidget/textview.h
@@ -61,6 +61,8 @@ public:
   typedef Gtk::TextView type_text_view;
   
   type_text_view* get_textview();
+  
+  void set_read_only(bool read_only = true);
 
 private:
   void init();