pjs/layout/forms/nsIFormControlFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsIFormControlFrame_h___
#define nsIFormControlFrame_h___
#include "nsISupports.h"
#include "nsFont.h"
class nsFormFrame;
class nsIPresContext;
class nsString;
class nsIContent;
// IID for the nsIFormControlFrame class
#define NS_IFORMCONTROLFRAME_IID \
{ 0x38eb3980, 0x4d99, 0x11d2, \
{ 0x80, 0x3f, 0x0, 0x60, 0x8, 0x15, 0xa7, 0x91 } }
/**
* nsIFormControlFrame is the common interface for frames of form controls. It
* provides a uniform way of creating widgets, resizing, and painting.
* @see nsLeafFrame and its base classes for more info
*/
class nsIFormControlFrame : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFORMCONTROLFRAME_IID)
NS_IMETHOD GetType(PRInt32* aType) const = 0;
NS_IMETHOD GetName(nsString* aName) = 0;
virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE) = 0;
virtual void ScrollIntoView(nsIPresContext* aPresContext) = 0;
virtual void MouseClicked(nsIPresContext* aPresContext) = 0;
virtual void Reset(nsIPresContext* aPresContext) = 0;
virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter) = 0;
virtual PRInt32 GetMaxNumValues() = 0;
virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames) = 0;
virtual void SetFormFrame(nsFormFrame* aFrame) = 0;
virtual nscoord GetVerticalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const = 0;
virtual nscoord GetHorizontalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const = 0;
/**
* Set the suggested size for the form element.
* This is used to control the size of the element during reflow if it hasn't had it's size
* explicitly set.
* @param aWidth width of the form element
* @param aHeight height of the form element
* @returns NS_OK
*/
NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight) = 0;
/**
* Determine if the control uses a native widget for rendering
* @param aRequiresWidget is set to PR_TRUE if it has a native widget, PR_FALSE otherwise.
* @returns NS_OK
*/
/**
* Determine if the control uses a native widget for rendering
* @param aRequiresWidget is set to PR_TRUE if it has a native widget, PR_FALSE otherwise.
* @returns NS_OK
*/
virtual nsresult RequiresWidget(PRBool &aRequiresWidget) = 0;
NS_IMETHOD GetFont(nsIPresContext* aPresContext,
nsFont& aFont) = 0;
/**
* Get the content object associated with this frame. Adds a reference to
* the content object so the caller must do a release.
*
* @see nsISupports#Release()
*/
NS_IMETHOD GetFormContent(nsIContent*& aContent) const = 0;
/**
* Set a property on the form control frame.
*
* @param aName name of the property to set
* @param aValue value of the property
* @returns NS_OK if the property name is valid, otherwise an error code
*/
NS_IMETHOD SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsString& aValue) = 0;
/**
* Get a property from the form control frame
*
* @param aName name of the property to get
* @param aValue value of the property
* @returns NS_OK if the property name is valid, otherwise an error code
*/
NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue) = 0;
};
#endif