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- /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- /* jssrules.h --- private style sheet routines
- */
- #ifndef __JSSRULES_H_
- #define __JSSRULES_H_
-
- /*
- * A JSS rule consists of a list of selectors, a list of declarations,
- * and a specificity of its selector
- */
- struct _StyleRule {
- StyleTag tag;
- unsigned nSelectors;
- StyleTag **selectors; /* array of pointers to StyleTag structures */
- StyleRule *next;
- };
-
- /*
- * Specificity is implemented as three 8-bit components: the number of tags in
- * the selector (the least significant component), the number of classes in the
- * selector, and the number of ids in the selector (the most significant component)
- */
- #define JSS_SPECIFICITY(nTags, nClasses, nIDs)\
- ((uint32)(nTags) | ((uint32)(nClasses)<<8) | ((uint32)(nIDs)<<16))
-
- /*
- * This routine creates a new rule object and adds it to the list of existing
- * rules
- *
- * Returns the new rule if successful; 0 otherwise
- */
- extern StyleRule *
- jss_NewRule(JSContext *mc, unsigned nSelectors, jsval *selectors);
-
- /* Destroys a list of rules */
- extern void
- jss_DestroyRules(StyleRule *);
-
- /*
- * Given a list of rules and a contextual selector (array of simple
- * selectors), looks to see if the contextual selector matches that of an
- * existing rule
- */
- extern StyleRule *
- jss_LookupRule(JSContext *mc, StyleRule *rules, unsigned nSelectors, jsval *selectors);
-
- /*
- * Callback function for jss_EnumApplicableRules(). Return MOCHA_TRUE to continuing
- * iterating and MOCHA_FALSE to stop
- */
- typedef JSBool (* RULECALLBACK)(StyleTag *tag, void *data);
-
- /*
- * This routine takes as an argument a list of rules, a stack of open HTML
- * elements, and a callback function. The callback function is called once for
- * each rule that applies
- */
- extern JSBool
- jss_EnumApplicableRules(JSSContext *jc,
- StyleRule *rules,
- StyleAndTagStack *styleStack,
- RULECALLBACK callback,
- void *data);
-
- #endif /* __JSSRULES_H_ */
-
-