kupucontentfilters.js

一个使用struts+hibernate+spring开发的完的网站源代码。

        this.Flow = ['#PCDATA','form'].concat(this.block, this.inline);
    }(this);

    this._commonsetting = function(self, names, value) {
        for (var n = 0; n < names.length; n++) {
            self[names[n]] = value;
        }
    }
    
    // The tagAttributes class returns all valid attributes for a tag,
    // e.g. a = this.tagAttributes.head
    // a.head -> [ 'lang', 'xml:lang', 'dir', 'id', 'profile' ]
    this.tagAttributes = new function(el, validation) {
        this.title = el.i18n.concat('id');
        this.html = this.title.concat('xmlns');
        this.head = this.title.concat('profile');
        this.base = ['id', 'href', 'target'];
        this.meta =  this.title.concat('http-equiv','name','content', 'scheme');
        this.link = el.attrs.concat('charset','href','hreflang','type', 'rel','rev','media','target');
        this.style = this.title.concat('type','media','title', 'xml:space');
        this.script = ['id','charset','type','language','src','defer', 'xml:space'];
        this.iframe = [
                      'longdesc','name','src','frameborder','marginwidth',
                      'marginheight','scrolling','align','height','width'].concat(el.coreattrs);
        this.body = ['background','bgcolor','text','link','vlink','alink'].concat(el.attrs, el.loadevents);
        validation._commonsetting(this,
                                  ['p','div'].concat(el.heading),
                                  ['align'].concat(el.attrs));
        this.dl = this.dir = this.menu = el.attrs.concat('compact');
        this.ul = this.menu.concat('type');
        this.ol = this.ul.concat('start');
        this.li = el.attrs.concat('type','value');
        this.hr = el.attrs.concat('align','noshade','size','width');
        this.pre = el.attrs.concat('width','xml:space');
        this.blockquote = this.q = el.attrs.concat('cite');
        this.ins = this.del = this.blockquote.concat('datetime');
        this.a = el.attrs.concat(el.focus,'charset','type','name','href','hreflang','rel','rev','shape','coords','target');
        this.bdo = el.coreattrs.concat(el.events, 'lang','xml:lang','dir');
        this.br = el.coreattrs.concat('clear');
        validation._commonsetting(this,
                                  ['noscript','noframes','dt', 'dd', 'address','center','span','em', 'strong', 'dfn','code',
                                  'samp','kbd','var','cite','abbr','acronym','sub','sup','tt',
                                  'i','b','big','small','u','s','strike', 'fieldset'],
                                  el.attrs);

        this.basefont = ['id','size','color','face'];
        this.font = el.coreattrs.concat(el.i18n, 'size','color','face');
        this.object = el.attrs.concat('declare','classid','codebase','data','type','codetype','archive','standby','height','width','usemap','name','tabindex','align','border','hspace','vspace');
        this.param = ['id','name','value','valuetype','type'];
        this.applet = el.coreattrs.concat('codebase','archive','code','object','alt','name','width','height','align','hspace','vspace');
        this.img = el.attrs.concat('src','alt','name','longdesc','height','width','usemap','ismap','align','border','hspace','vspace');
        this.map = this.title.concat('title','name', 'style', 'class', el.events);
        this.area = el.attrs.concat('shape','coords','href','nohref','alt','target', el.focus);
        this.form = el.attrs.concat('action','method','name','enctype',el.formevents,'accept','accept-charset','target');
        this.label = el.attrs.concat('for','accesskey', el.focusevents);
        this.input = el.attrs.concat('type','name','value','checked','disabled','readonly','size','maxlength','src','alt','usemap',el.input,'accept','align', el.focus);
        this.select = el.attrs.concat('name','size','multiple','disabled','tabindex', el.focusevents,el.input);
        this.optgroup = el.attrs.concat('disabled','label');
        this.option = el.attrs.concat('selected','disabled','label','value');
        this.textarea = el.attrs.concat('name','rows','cols','disabled','readonly', el.inputevents, el.focus);
        this.legend = el.attrs.concat('accesskey','align');
        this.button = el.attrs.concat('name','value','type','disabled',el.focus);
        this.isindex = el.coreattrs.concat('prompt', el.i18n);
        this.table = el.attrs.concat('summary','width','border','frame','rules','cellspacing','cellpadding','align','bgcolor');
        this.caption = el.attrs.concat('align');
        this.col = this.colgroup = el.attrs.concat('span','width','align','char','charoff','valign');
        this.thead =  el.attrs.concat('align','char','charoff','valign');
        this.tfoot = this.tbody = this.thead;
        this.tr = this.thead.concat('bgcolor');
        this.td = this.th = this.tr.concat('abbr','axis','headers','scope','rowspan','colspan','nowrap','width','height');
    }(this.elements, this);

    // State array. For each tag identifies what it can contain.
    // I'm not attempting to check the order or number of contained
    // tags (yet).
    this.States = new function(el, validation) {

        var here = this;
        function setStates(tags, value) {
            var valset = new validation.Set(value);

            for (var i = 0; i < tags.length; i++) {
                here[tags[i]] = valset;
            }
        }
        
        setStates(['html'], ['head','body']);
        setStates(['head'], ['title','base','script','style', 'meta','link','object','isindex']);
        setStates([
            'base', 'meta', 'link', 'hr', 'param', 'img', 'area', 'input',
            'br', 'basefont', 'isindex', 'col',
            ], []);

        setStates(['title','style','script','option','textarea'], ['#PCDATA']);
        setStates([ 'noscript', 'iframe', 'noframes', 'body', 'div',
            'li', 'dd', 'blockquote', 'center', 'ins', 'del', 'td', 'th',
            ], el.Flow);

        setStates(el.heading, el.Inline);
        setStates([ 'p', 'dt', 'address', 'span', 'bdo', 'caption',
            'em', 'strong', 'dfn','code','samp','kbd','var',
            'cite','abbr','acronym','q','sub','sup','tt','i',
            'b','big','small','u','s','strike','font','label',
            'legend'], el.Inline);

        setStates(['ul', 'ol', 'menu', 'dir', 'ul', ], ['li']);
        setStates(['dl'], ['dt','dd']);
        setStates(['pre'], validation._exclude(el.Inline, "img|object|applet|big|small|sub|sup|font|basefont"));
        setStates(['a'], validation._exclude(el.Inline, "a"));
        setStates(['applet', 'object'], ['#PCDATA', 'param','form'].concat(el.block, el.inline, el.misc));
        setStates(['map'], ['form', 'area'].concat(el.block, el.misc));
        setStates(['form'], validation._exclude(el.Flow, ['form']));
        setStates(['select'], ['optgroup','option']);
        setStates(['optgroup'], ['option']);
        setStates(['fieldset'], ['#PCDATA','legend','form'].concat(el.block,el.inline,el.misc));
        setStates(['button'], validation._exclude(el.Flow, ['a','form','iframe'].concat(el.inline_forms)));
        setStates(['table'], ['caption','col','colgroup','thead','tfoot','tbody','tr']);
        setStates(['thead', 'tfoot', 'tbody'], ['tr']);
        setStates(['colgroup'], ['col']);
        setStates(['tr'], ['th','td']);
    }(this.elements, this);

    // Permitted elements for style.
    this.styleWhitelist = new this.Set(['text-align', 'list-style-type', 'float']);
    this.classBlacklist = new this.Set(['MsoNormal', 'MsoTitle', 'MsoHeader', 'MsoFootnoteText',
        'Bullet1', 'Bullet2']);

    this.classFilter = function(value) {
        var classes = value.split(' ');
        var filtered = [];
        for (var i = 0; i < classes.length; i++) {
            var c = classes[i];
            if (c && !this.classBlacklist[c]) {
                filtered.push(c);
            }
        }
        return filtered.join(' ');
    }
    this._defaultCopyAttribute = function(name, htmlnode, xhtmlnode) {
        var val = htmlnode.getAttribute(name);
        if (val) xhtmlnode.setAttribute(name, val);
    }
    // Set up filters for attributes.
    this.attrFilters = new function(validation, editor) {
        var attrs = validation.elements.attributes;
        for (var i=0; i < attrs.length; i++) {
            this[attrs[i]] = validation._defaultCopyAttribute;
        }
        this['class'] = function(name, htmlnode, xhtmlnode) {
            var val = htmlnode.getAttribute('class');
            if (val) val = validation.classFilter(val);
            if (val) xhtmlnode.setAttribute('class', val);
        }
        // allow a * wildcard to make all attributes valid in the filter
        // note that this is pretty slow on IE
        this['*'] = function(name, htmlnode, xhtmlnode) {
            for (var i=0; i < htmlnode.attributes.length; i++) {
                var attr = htmlnode.attributes[i];
                if (attr.value !== null && attr.value !== undefined) {
                    xhtmlnode.setAttribute(attr.name, attr.value);
                };
            };
        }
        if (editor.getBrowserName()=="IE") {
            this['class'] = function(name, htmlnode, xhtmlnode) {
                var val = htmlnode.className;
                if (val) val = validation.classFilter(val);
                if (val) xhtmlnode.setAttribute('class', val);
            }
            this['http-equiv'] = function(name, htmlnode, xhtmlnode) {
                var val = htmlnode.httpEquiv;
                if (val) xhtmlnode.setAttribute('http-equiv', val);
            }
            this['xml:lang'] = this['xml:space'] = function(name, htmlnode, xhtmlnode) {
                try {
                    var val = htmlnode.getAttribute(name);
                    if (val) xhtmlnode.setAttribute(name, val);
                } catch(e) {
                }
            }
        }
        this.rowspan = this.colspan = function(name, htmlnode, xhtmlnode) {
            var val = htmlnode.getAttribute(name);
            if (val && val != '1') xhtmlnode.setAttribute(name, val);
        }
        this.style = function(name, htmlnode, xhtmlnode) {
            var val = htmlnode.style.cssText;
            if (val) {
                var styles = val.split(/; */);
                for (var i = styles.length; i >= 0; i--) if (styles[i]) {
                    var parts = /^([^:]+): *(.*)$/.exec(styles[i]);
                    var name = parts[1].toLowerCase();
                    if (validation.styleWhitelist[name]) {
                        styles[i] = name+': '+parts[2];
                    } else {
                        styles.splice(i,1); // delete
                    }
                }
                if (styles[styles.length-1]) styles.push('');
                val = styles.join('; ').strip();
            }
            if (val) xhtmlnode.setAttribute('style', val);
        }
    }(this, editor);

    // Exclude unwanted tags.
    this.excludeTags(['center']);

    if (editor.config && editor.config.htmlfilter) {
        this.filterStructure = editor.config.htmlfilter.filterstructure;
        
        var exclude = editor.config.htmlfilter;
        if (exclude.a)
            this.excludeAttributes(exclude.a);
        if (exclude.t)
            this.excludeTags(exclude.t);
        if (exclude.c) {
            var c = exclude.c;
            if (!c.length) c = [c];
            for (var i = 0; i < c.length; i++) {
                this.excludeTagAttributes(c[i].t, c[i].a);
            }
        }
        if (exclude.style) {
            var s = exclude.style;
            for (var i = 0; i < s.length; i++) {
                this.styleWhitelist[s[i]] = 1;
            }
        }
        if (exclude['class']) {
            var c = exclude['class'];
            for (var i = 0; i < c.length; i++) {
                this.classBlacklist[c[i]] = 1;
            }
        }
    };

    // Copy all valid attributes from htmlnode to xhtmlnode.
    this._copyAttributes = function(htmlnode, xhtmlnode, valid) {
        if (valid.contains('*')) {
            // allow all attributes on this tag
            this.attrFilters['*'](name, htmlnode, xhtmlnode);
            return;
        };
        for (var i = 0; i < valid.length; i++) {
            var name = valid[i];
            var filter = this.attrFilters[name];
            if (filter) filter(name, htmlnode, xhtmlnode);
        }
    }

    this._convertToSarissaNode = function(ownerdoc, htmlnode, xhtmlparent) {
        return this._convertNodes(ownerdoc, htmlnode, xhtmlparent, new this.Set(['html']));
    };
    
    this._convertNodes = function(ownerdoc, htmlnode, xhtmlparent, permitted) {
        var name, parentnode = xhtmlparent;
        var nodename = this._getTagName(htmlnode);
        var nostructure = !this.filterstructure;

        // TODO: This permits valid tags anywhere. it should use the state
        // table in xhtmlvalid to only permit tags where the XHTML DTD
        // says they are valid.
        var validattrs = this.tagAttributes[nodename];
        if (validattrs && (nostructure || permitted[nodename])) {
            try {
                var xhtmlnode = ownerdoc.createElement(nodename);
                parentnode = xhtmlnode;
            } catch (e) { };

            if (validattrs && xhtmlnode)
                this._copyAttributes(htmlnode, xhtmlnode, validattrs);
        }

        var kids = htmlnode.childNodes;
        if (kids && /base|meta|link|hr|param|img|area|input|br|basefont|isindex|col/.exec(nodename)) {
            kids = []; // IE bug: base can think it has children
        }
        var permittedChildren = this.States[parentnode.tagName] || permitted;

        if (kids.length == 0) {
            if (htmlnode.text && htmlnode.text != "" &&
                (nostructure || permittedChildren['#PCDATA'])) {
                var text = htmlnode.text;
                var tnode = ownerdoc.createTextNode(text);
                parentnode.appendChild(tnode);
            }
        } else {
            for (var i = 0; i < kids.length; i++) {
                var kid = kids[i];
                if (kid.nodeType == 1) {
                    var newkid = this._convertNodes(ownerdoc, kid, parentnode, permittedChildren);
                    if (newkid != null) {
                        parentnode.appendChild(newkid);
                    };
                } else if (kid.nodeType == 3) {
                    if (nostructure || permittedChildren['#PCDATA'])
                        parentnode.appendChild(ownerdoc.createTextNode(kid.nodeValue));
                } else if (kid.nodeType == 4) {
                    if (nostructure || permittedChildren['#PCDATA'])
                        parentnode.appendChild(ownerdoc.createCDATASection(kid.nodeValue));
                }
            }
        } 
        return xhtmlnode;
    };
}