Added SetMaxTextLength method to text widget and textarea widget.

widget/public/nsITextWidget.h

@@ -86,6 +86,15 @@ class nsITextWidget : public nsIWidget
     
     virtual void SetPassword(PRBool aIsPassword) = 0;
 
+    /**
+     * Sets the maximum number of characters the widget can hold 
+     *
+     * @param aChars maximum number of characters for this widget. if 0 then there isn't any limit
+     */
+    
+    virtual void SetMaxTextLength(PRUint32 aChars) = 0;
+
+
     /**
      * Set the text widget to be read-only
      *

widget/public/nsIWidget.h

@@ -72,7 +72,7 @@ typedef void* nsNativeWindow;
  */
 
 enum nsBorderStyle {   
-                  ///window border with title area
+                  ///no border
                 eBorderStyle_none,
                   ///dialog box border + title area
                 eBorderStyle_dialog, 

widget/src/windows/nsTextAreaWidget.cpp

@@ -22,6 +22,10 @@
 #include "nsString.h"
 #include <windows.h>
 
+void nsTextAreaWidget::SetMaxTextLength(PRUint32 aChars) {
+  nsTextHelper::SetMaxTextLength(aChars);
+}
+
 PRUint32  nsTextAreaWidget::GetText(nsString& aTextBuffer, PRUint32 aBufferSize) {
   return(nsTextHelper::GetText(aTextBuffer, aBufferSize));
 }

widget/src/windows/nsTextAreaWidget.h

@@ -49,6 +49,7 @@ public:
     BASE_IWIDGET_IMPL
 
     // nsITextWidget part
+    virtual void            SetMaxTextLength(PRUint32 aChars);
     virtual PRUint32        SetText(const nsString &aText);
     virtual PRUint32        GetText(nsString& aTextBuffer, PRUint32 aBufferSize);
     virtual PRUint32        InsertText(const nsString &aText, PRUint32 aStartPos, PRUint32 aEndPos);

widget/src/windows/nsTextHelper.cpp

@@ -25,6 +25,12 @@
 #include <windows.h>
 
 
+void nsTextHelper::SetMaxTextLength(PRUint32 aChars)
+{
+  ::SendMessage(mWnd, EM_SETLIMITTEXT, (WPARAM) (INT)aChars, 0);
+}
+
+
 PRUint32  nsTextHelper::GetText(nsString& aTextBuffer, PRUint32 aBufferSize) {
 
   int length = GetWindowTextLength(mWnd);

widget/src/windows/nsTextHelper.h

@@ -32,7 +32,8 @@ class nsTextHelper : public nsWindow, public nsITextWidget
 public:
     nsTextHelper(nsISupports *aOuter);
     virtual ~nsTextHelper();
-    
+
+    virtual         void            SetMaxTextLength(PRUint32 aChars);
     virtual         PRUint32        GetText(nsString& aTextBuffer, PRUint32 aBufferSize);
     virtual         PRUint32        SetText(const nsString &aText);
     virtual         PRUint32        InsertText(const nsString &aText, PRUint32 aStartPos, PRUint32 aEndPos);
@@ -50,7 +51,7 @@ protected:
 
     PRBool  mIsPassword;
     PRBool  mIsReadOnly;
-
+   
     virtual DWORD           WindowExStyle();
 
 };

widget/tests/windows/winmain.cpp

@@ -994,6 +994,7 @@ int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmd
     textWidget->SetFont(font);
     nsString initialText("0123456789");
     textWidget->SetText(initialText);
+    textWidget->SetMaxTextLength(12);
 
     NS_RELEASE(textWidget); 
     y += rect.height + 5;