RetroZilla/layout/forms/nsIsIndexFrame.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsIsIndexFrame_h___
#define nsIsIndexFrame_h___

#include "nsAreaFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIStatefulFrame.h"
#include "nsIUnicodeEncoder.h"
#include "nsIDOMKeyListener.h"

#include "nsTextControlFrame.h"
#include "nsFormControlHelper.h"
typedef   nsTextControlFrame nsNewFrame;

class nsISupportsArray;

class nsIsIndexFrame : public nsAreaFrame,
                       public nsIAnonymousContentCreator,
                       public nsIDOMKeyListener,
                       public nsIStatefulFrame
{
public:
  nsIsIndexFrame();
  virtual ~nsIsIndexFrame();

  NS_IMETHOD Paint(nsPresContext*      aPresContext,
                   nsIRenderingContext& aRenderingContext,
                   const nsRect&        aDirtyRect,
                   nsFramePaintLayer    aWhichLayer,
                   PRUint32             aFlags = 0);

  // XXX Hack so we can squirrel away the pres context pointer for the KeyPress method
  NS_IMETHOD Init(nsPresContext*  aPresContext,
                  nsIContent*      aContent,
                  nsIFrame*        aParent,
                  nsStyleContext*  aContext,
                  nsIFrame*        aPrevInFlow) {
    mPresContext = aPresContext;
    return nsAreaFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow);
  }

  /**
   * Processes a key pressed event
   * @param aKeyEvent @see nsIDOMEvent.h 
   * @returns whether the event was consumed or ignored. @see nsresult
   */
  NS_IMETHOD KeyDown(nsIDOMEvent* aKeyEvent) { return NS_OK; }

  /**
   * Processes a key release event
   * @param aKeyEvent @see nsIDOMEvent.h 
   * @returns whether the event was consumed or ignored. @see nsresult
   */
  NS_IMETHOD KeyUp(nsIDOMEvent* aKeyEvent) { return NS_OK; }

  /**
   * Processes a key typed event
   * @param aKeyEvent @see nsIDOMEvent.h 
   * @returns whether the event was consumed or ignored. @see nsresult
   *
   */
  NS_IMETHOD KeyPress(nsIDOMEvent* aKeyEvent); // we only care when a key is pressed

  // nsIFormControlFrame
  NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);

  NS_IMETHOD Reflow(nsPresContext*          aCX,
                    nsHTMLReflowMetrics&     aDesiredSize,
                    const nsHTMLReflowState& aReflowState,
                    nsReflowStatus&          aStatus);

  virtual PRBool IsLeaf() const;

#ifdef NS_DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
  NS_IMETHOD AttributeChanged(nsIContent*     aChild,
                              PRInt32         aNameSpaceID,
                              nsIAtom*        aAttribute,
                              PRInt32         aModType);

  void           SetFocus(PRBool aOn, PRBool aRepaint);
  void           ScrollIntoView(nsPresContext* aPresContext);

  // from nsIAnonymousContentCreator
  NS_IMETHOD CreateAnonymousContent(nsPresContext* aPresContext,
                                    nsISupportsArray& aChildList);
  NS_IMETHOD CreateFrameFor(nsPresContext*   aPresContext,
                            nsIContent *      aContent,
                            nsIFrame**        aFrame) { if (aFrame) *aFrame = nsnull; return NS_ERROR_FAILURE; }

  NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; }

  NS_IMETHOD OnSubmit(nsPresContext* aPresContext);

  //nsIStatefulFrame
  NS_IMETHOD SaveState(nsPresContext* aPresContext, nsPresState** aState);
  NS_IMETHOD RestoreState(nsPresContext* aPresContext, nsPresState* aState);

protected:
  nsCOMPtr<nsITextContent> mTextContent;
  nsCOMPtr<nsIContent> mInputContent;

  // XXX Hack: pres context needed by function KeyPress() and SetFocus()
  nsPresContext*     mPresContext;  // weak reference

private:
  NS_IMETHOD UpdatePromptLabel();
  NS_IMETHOD GetInputFrame(nsPresContext* aPresContext, nsIFormControlFrame** oFrame);
  NS_IMETHOD GetInputValue(nsPresContext* aPresContext, nsString& oString);
  NS_IMETHOD SetInputValue(nsPresContext* aPresContext, const nsString aString);

  void GetSubmitCharset(nsCString& oCharset);
  NS_IMETHOD GetEncoder(nsIUnicodeEncoder** encoder);
  char* UnicodeToNewBytes(const PRUnichar* aSrc, PRUint32 aLen, nsIUnicodeEncoder* encoder);
  void URLEncode(const nsString& aString, nsIUnicodeEncoder* encoder, nsString& oString);

  NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
  NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
};

#endif