Removed IE specific code from WFormWidget

and no longer needed WFormWidget::applyEmptyText function

Author: skoehler47

src/Wt/WFormWidget.C

@@ -85,8 +85,7 @@ void WFormWidget::setPlaceholderText(const WString& placeholderText)
 
   WApplication* app = WApplication::instance();
   const WEnvironment& env = app->environment();
-  if (!env.agentIsIElt(10) &&
-    (domElementType() == DomElementType::INPUT || domElementType() == DomElementType::TEXTAREA)) {
+  if (domElementType() == DomElementType::INPUT || domElementType() == DomElementType::TEXTAREA) {
     flags_.set(BIT_PLACEHOLDER_CHANGED);
     repaint();
   } else {
@@ -157,29 +156,13 @@ void WFormWidget::render(WFlags<RenderFlag> flags)
 
 void WFormWidget::updateEmptyText()
 {
-  WApplication *app = WApplication::instance();
-  const WEnvironment &env = app->environment();
-  if (isRendered()) {
-    if (env.agentIsIElt(10)) {
-      doJavaScript(jsRef() + ".wtObj"
-                   ".setEmptyText(" + emptyText_.jsStringLiteral() + ");");
-    } else {
-      if (domElementType() == DomElementType::INPUT || domElementType() == DomElementType::TEXTAREA) {
-        flags_.set(BIT_PLACEHOLDER_CHANGED);
-        repaint();
-      }
-    }
+  if (isRendered() &&
+    (domElementType() == DomElementType::INPUT || domElementType() == DomElementType::TEXTAREA)) {
+    flags_.set(BIT_PLACEHOLDER_CHANGED);
+    repaint();
   }
 }
 
-void WFormWidget::applyEmptyText()
-{
-  WApplication *app = WApplication::instance();
-  const WEnvironment &env = app->environment();
-  if (env.agentIsIElt(10) && isRendered() && !emptyText_.empty())
-    doJavaScript(jsRef() + ".wtObj.applyEmptyText();");
-}
-
 void WFormWidget::refresh()
 {
   if (emptyText_.refresh())
@@ -257,13 +240,7 @@ void WFormWidget::updateDom(DomElement& element, bool all)
     if (!all || !isEnabled())
       element.setProperty(Wt::Property::Disabled,
                           isEnabled() ? "false" : "true");
-
-    if (!all && isEnabled() && env.agentIsIE()) {
-      /*
-       * FIXME: implement a workaround for IE, reenabling a checkbox makes
-       * the input box loose interactivity.
-       */
-    }
+        
     flags_.reset(BIT_ENABLED_CHANGED);
   }
 

src/Wt/WFormWidget.h

@@ -160,8 +160,6 @@ class WT_API WFormWidget : public WInteractWidget
   // also used in WAbstractToggleButton
   static const char *CHANGE_SIGNAL;
 
-  void applyEmptyText();
-
   virtual void enableAjax() override;
 
   /*! \internal

src/Wt/WLineEdit.C

@@ -70,8 +70,6 @@ void WLineEdit::setText(const WT_USTRING& text)
     repaint();
 
     validate();
-
-    applyEmptyText();
   }
 }
 

src/Wt/WTextArea.C

@@ -43,8 +43,6 @@ void WTextArea::setText(const WT_USTRING& text)
   repaint();
 
   validate();
-
-  applyEmptyText();
 }
 
 void WTextArea::setColumns(int columns)