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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsIStyleSheetLinkingElement_h__
#define nsIStyleSheetLinkingElement_h__
#include "nsISupports.h"
#include "mozilla/StyleSheet.h"
class nsICSSLoaderObserver;
class nsIURI;
#define NS_ISTYLESHEETLINKINGELEMENT_IID \
{ 0xa8b79f3b, 0x9d18, 0x4f9c, \
{ 0xb1, 0xaa, 0x8c, 0x9b, 0x1b, 0xaa, 0xac, 0xad } }
class nsIStyleSheetLinkingElement : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISTYLESHEETLINKINGELEMENT_IID)
/**
* Used to make the association between a style sheet and
* the element that linked it to the document.
*
* @param aStyleSheet the style sheet associated with this
* element.
*/
NS_IMETHOD SetStyleSheet(mozilla::StyleSheet* aStyleSheet) = 0;
/**
* Used to obtain the style sheet linked in by this element.
*
* @return the style sheet associated with this element.
*/
NS_IMETHOD_(mozilla::StyleSheet*) GetStyleSheet() = 0;
/**
* Initialize the stylesheet linking element. If aDontLoadStyle is
* true the element will ignore the first modification to the
* element that would cause a stylesheet to be loaded. Subsequent
* modifications to the element will not be ignored.
*/
NS_IMETHOD InitStyleLinkElement(bool aDontLoadStyle) = 0;
/**
* Tells this element to update the stylesheet.
*
* @param aObserver observer to notify once the stylesheet is loaded.
* This will be passed to the CSSLoader
* @param [out] aWillNotify whether aObserver will be notified when the sheet
* loads. If this is false, then either we didn't
* start the sheet load at all, the load failed, or
* this was an inline sheet that completely finished
* loading. In the case when the load failed the
* failure code will be returned.
* @param [out] whether the sheet is an alternate sheet. This value is only
* meaningful if aWillNotify is true.
* @param aForceUpdate whether we wand to force the update, flushing the
* cached version if any.
*/
NS_IMETHOD UpdateStyleSheet(nsICSSLoaderObserver* aObserver,
bool *aWillNotify,
bool *aIsAlternate,
bool aForceUpdate = false) = 0;
/**
* Tells this element whether to update the stylesheet when the
* element's properties change.
*
* @param aEnableUpdates update on changes or not.
*/
NS_IMETHOD SetEnableUpdates(bool aEnableUpdates) = 0;
/**
* Gets the charset that the element claims the style sheet is in
*
* @param aCharset the charset
*/
NS_IMETHOD GetCharset(nsAString& aCharset) = 0;
/**
* Tells this element to use a different base URI. This is used for
* proper loading of xml-stylesheet processing instructions in XUL overlays
* and is only currently used by nsXMLStylesheetPI.
*
* @param aNewBaseURI the new base URI, nullptr to use the default base URI.
*/
virtual void OverrideBaseURI(nsIURI* aNewBaseURI) = 0;
// This doesn't entirely belong here since they only make sense for
// some types of linking elements, but it's a better place than
// anywhere else.
virtual void SetLineNumber(uint32_t aLineNumber) = 0;
/**
* Get the line number, as previously set by SetLineNumber.
*
* @return the line number of this element; or 1 if no line number
* was set
*/
virtual uint32_t GetLineNumber() = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIStyleSheetLinkingElement,
NS_ISTYLESHEETLINKINGELEMENT_IID)
#endif // nsILinkingElement_h__
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