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357 lines
12 KiB
JavaScript
357 lines
12 KiB
JavaScript
/*
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Status: dont know where this will all live exactly
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Need to pull in the implementation of the various helper methods
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Some can be static method, others maybe methods of the ContentSetter (?)
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Gut the ContentPane, replace its _setContent with our own call to dojox.html.set()
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*/
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dojo.provide("dojox.html._base");
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dojo.require("dojo.html");
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(function() {
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if(dojo.isIE){
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var alphaImageLoader = /(AlphaImageLoader\([^)]*?src=(['"]))(?![a-z]+:|\/)([^\r\n;}]+?)(\2[^)]*\)\s*[;}]?)/g;
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}
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// css at-rules must be set before any css declarations according to CSS spec
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// match:
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// @import 'http://dojotoolkit.org/dojo.css';
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// @import 'you/never/thought/' print;
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// @import url("it/would/work") tv, screen;
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// @import url(/did/you/now.css);
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// but not:
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// @namespace dojo "http://dojotoolkit.org/dojo.css"; /* namespace URL should always be a absolute URI */
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// @charset 'utf-8';
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// @media print{ #menuRoot {display:none;} }
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// we adjust all paths that dont start on '/' or contains ':'
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//(?![a-z]+:|\/)
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var cssPaths = /(?:(?:@import\s*(['"])(?![a-z]+:|\/)([^\r\n;{]+?)\1)|url\(\s*(['"]?)(?![a-z]+:|\/)([^\r\n;]+?)\3\s*\))([a-z, \s]*[;}]?)/g;
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var adjustCssPaths = dojox.html._adjustCssPaths = function(cssUrl, cssText){
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// summary:
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// adjusts relative paths in cssText to be relative to cssUrl
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// a path is considered relative if it doesn't start with '/' and not contains ':'
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// description:
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// Say we fetch a HTML page from level1/page.html
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// It has some inline CSS:
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// @import "css/page.css" tv, screen;
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// ...
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// background-image: url(images/aplhaimage.png);
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//
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// as we fetched this HTML and therefore this CSS
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// from level1/page.html, these paths needs to be adjusted to:
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// @import 'level1/css/page.css' tv, screen;
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// ...
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// background-image: url(level1/images/alphaimage.png);
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//
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// In IE it will also adjust relative paths in AlphaImageLoader()
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// filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/alphaimage.png');
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// will be adjusted to:
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// filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='level1/images/alphaimage.png');
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//
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// Please note that any relative paths in AlphaImageLoader in external css files wont work, as
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// the paths in AlphaImageLoader is MUST be declared relative to the HTML page,
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// not relative to the CSS file that declares it
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if(!cssText || !cssUrl){ return; }
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// support the ImageAlphaFilter if it exists, most people use it in IE 6 for transparent PNGs
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// We are NOT going to kill it in IE 7 just because the PNGs work there. Somebody might have
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// other uses for it.
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// If user want to disable css filter in IE6 he/she should
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// unset filter in a declaration that just IE 6 doesn't understands
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// like * > .myselector { filter:none; }
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if(alphaImageLoader){
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cssText = cssText.replace(alphaImageLoader, function(ignore, pre, delim, url, post){
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return pre + (new dojo._Url(cssUrl, './'+url).toString()) + post;
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});
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}
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return cssText.replace(cssPaths, function(ignore, delimStr, strUrl, delimUrl, urlUrl, media){
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if(strUrl){
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return '@import "' + (new dojo._Url(cssUrl, './'+strUrl).toString()) + '"' + media;
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}else{
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return 'url(' + (new dojo._Url(cssUrl, './'+urlUrl).toString()) + ')' + media;
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}
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});
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};
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// attributepaths one tag can have multiple paths, example:
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// <input src="..." style="url(..)"/> or <a style="url(..)" href="..">
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// <img style='filter:progid...AlphaImageLoader(src="noticeTheSrcHereRunsThroughHtmlSrc")' src="img">
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var htmlAttrPaths = /(<[a-z][a-z0-9]*\s[^>]*)(?:(href|src)=(['"]?)([^>]*?)\3|style=(['"]?)([^>]*?)\5)([^>]*>)/gi;
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var adjustHtmlPaths = dojox.html._adjustHtmlPaths = function(htmlUrl, cont){
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var url = htmlUrl || "./";
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return cont.replace(htmlAttrPaths,
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function(tag, start, name, delim, relUrl, delim2, cssText, end){
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return start + (name ?
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(name + '=' + delim + (new dojo._Url(url, relUrl).toString()) + delim)
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: ('style=' + delim2 + adjustCssPaths(url, cssText) + delim2)
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) + end;
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}
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);
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};
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var snarfStyles = dojox.html._snarfStyles = function (/*String*/cssUrl, /*String*/cont, /*Array*/styles){
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/**************** cut out all <style> and <link rel="stylesheet" href=".."> **************/
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// also return any attributes from this tag (might be a media attribute)
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// if cssUrl is set it will adjust paths accordingly
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styles.attributes = [];
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return cont.replace(/(?:<style([^>]*)>([\s\S]*?)<\/style>|<link\s+(?=[^>]*rel=['"]?stylesheet)([^>]*?href=(['"])([^>]*?)\4[^>\/]*)\/?>)/gi,
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function(ignore, styleAttr, cssText, linkAttr, delim, href){
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// trim attribute
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var i, attr = (styleAttr||linkAttr||"").replace(/^\s*([\s\S]*?)\s*$/i, "$1");
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if(cssText){
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i = styles.push(cssUrl ? adjustCssPaths(cssUrl, cssText) : cssText);
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}else{
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i = styles.push('@import "' + href + '";');
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attr = attr.replace(/\s*(?:rel|href)=(['"])?[^\s]*\1\s*/gi, ""); // remove rel=... and href=...
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}
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if(attr){
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attr = attr.split(/\s+/);// split on both "\n", "\t", " " etc
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var atObj = {}, tmp;
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for(var j = 0, e = attr.length; j < e; j++){
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tmp = attr[j].split('='); // split name='value'
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atObj[tmp[0]] = tmp[1].replace(/^\s*['"]?([\s\S]*?)['"]?\s*$/, "$1"); // trim and remove ''
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}
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styles.attributes[i - 1] = atObj;
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}
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return ""; // squelsh the <style> or <link>
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}
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);
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};
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var snarfScripts = dojox.html._snarfScripts = function(cont, byRef){
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// summary
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// strips out script tags from cont
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// invoke with
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// byRef = {errBack:function(){/*add your download error code here*/, downloadRemote: true(default false)}}
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// byRef will have {code: 'jscode'} when this scope leaves
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byRef.code = "";
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function download(src){
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if(byRef.downloadRemote){
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// console.debug('downloading',src);
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dojo.xhrGet({
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url: src,
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sync: true,
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load: function(code){
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byRef.code += code+";";
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},
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error: byRef.errBack
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});
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}
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}
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// match <script>, <script type="text/..., but not <script type="dojo(/method)...
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return cont.replace(/<script\s*(?![^>]*type=['"]?dojo)(?:[^>]*?(?:src=(['"]?)([^>]*?)\1[^>]*)?)*>([\s\S]*?)<\/script>/gi,
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function(ignore, delim, src, code){
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if(src){
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download(src);
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}else{
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byRef.code += code;
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}
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return "";
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}
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);
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};
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var evalInGlobal = dojox.html.evalInGlobal = function(code, appendNode){
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// we do our own eval here as dojo.eval doesn't eval in global crossbrowser
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// This work X browser but but it relies on a DOM
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// plus it doesn't return anything, thats unrelevant here but not for dojo core
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appendNode = appendNode || dojo.doc.body;
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var n = appendNode.ownerDocument.createElement('script');
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n.type = "text/javascript";
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appendNode.appendChild(n);
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n.text = code; // DOM 1 says this should work
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};
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dojo.declare("dojox.html._ContentSetter", [dojo.html._ContentSetter], {
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// adjustPaths: Boolean
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// Adjust relative paths in html string content to point to this page
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// Only useful if you grab content from a another folder than the current one
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adjustPaths: false,
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referencePath: ".",
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renderStyles: false,
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executeScripts: false,
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scriptHasHooks: false,
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scriptHookReplacement: null,
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_renderStyles: function(styles){
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// insert css from content into document head
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this._styleNodes = [];
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var st, att, cssText, doc = this.node.ownerDocument;
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var head = doc.getElementsByTagName('head')[0];
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for(var i = 0, e = styles.length; i < e; i++){
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cssText = styles[i]; att = styles.attributes[i];
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st = doc.createElement('style');
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st.setAttribute("type", "text/css"); // this is required in CSS spec!
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for(var x in att){
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st.setAttribute(x, att[x]);
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}
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this._styleNodes.push(st);
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head.appendChild(st); // must insert into DOM before setting cssText
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if(st.styleSheet){ // IE
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st.styleSheet.cssText = cssText;
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}else{ // w3c
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st.appendChild(doc.createTextNode(cssText));
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}
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}
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},
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empty: function() {
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this.inherited("empty", arguments);
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// empty out the styles array from any previous use
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this._styles = [];
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},
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onBegin: function() {
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// summary
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// Called after instantiation, but before set();
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// It allows modification of any of the object properties - including the node and content
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// provided - before the set operation actually takes place
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// This implementation extends that of dojo.html._ContentSetter
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// to add handling for adjustPaths, renderStyles on the html string content before it is set
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this.inherited("onBegin", arguments);
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var cont = this.content,
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node = this.node;
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var styles = this._styles;// init vars
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if(dojo.isString(cont)){
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if(this.adjustPaths && this.referencePath){
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cont = adjustHtmlPaths(this.referencePath, cont);
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}
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if(this.renderStyles || this.cleanContent){
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cont = snarfStyles(this.referencePath, cont, styles);
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}
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// because of a bug in IE, script tags that is first in html hierarchy doesnt make it into the DOM
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// when content is innerHTML'ed, so we can't use dojo.query to retrieve scripts from DOM
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if(this.executeScripts){
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var _t = this;
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var byRef = {
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downloadRemote: true,
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errBack:function(e){
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_t._onError.call(_t, 'Exec', 'Error downloading remote script in "'+_t.id+'"', e);
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}
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};
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cont = snarfScripts(cont, byRef);
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this._code = byRef.code;
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}
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}
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this.content = cont;
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},
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onEnd: function() {
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// summary
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// Called after set(), when the new content has been pushed into the node
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// It provides an opportunity for post-processing before handing back the node to the caller
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// This implementation extends that of dojo.html._ContentSetter
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var code = this._code,
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styles = this._styles;
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// clear old stylenodes from the DOM
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// these were added by the last set call
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// (in other words, if you dont keep and reuse the ContentSetter for a particular node
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// .. you'll have no practical way to do this)
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if(this._styleNodes && this._styleNodes.length){
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while(this._styleNodes.length){
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dojo.destroy(this._styleNodes.pop());
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}
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}
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// render new style nodes
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if(this.renderStyles && styles && styles.length){
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this._renderStyles(styles);
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}
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if(this.executeScripts && code){
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if(this.cleanContent){
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// clean JS from html comments and other crap that browser
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// parser takes care of in a normal page load
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code = code.replace(/(<!--|(?:\/\/)?-->|<!\[CDATA\[|\]\]>)/g, '');
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}
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if(this.scriptHasHooks){
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// replace _container_ with this.scriptHookReplace()
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// the scriptHookReplacement can be a string
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// or a function, which when invoked returns the string you want to substitute in
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code = code.replace(/_container_(?!\s*=[^=])/g, this.scriptHookReplacement);
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}
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try{
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evalInGlobal(code, this.node);
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}catch(e){
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this._onError('Exec', 'Error eval script in '+this.id+', '+e.message, e);
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}
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}
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this.inherited("onEnd", arguments);
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},
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tearDown: function() {
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this.inherited(arguments);
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delete this._styles;
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// only tear down -or another set() - will explicitly throw away the
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// references to the style nodes we added
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if(this._styleNodes && this._styleNodes.length){
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while(this._styleNodes.length){
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dojo.destroy(this._styleNodes.pop());
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}
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}
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delete this._styleNodes;
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// reset the defaults from the prototype
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dojo.mixin(this, dojo.getObject(this.declaredClass).prototype);
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}
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});
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dojox.html.set = function(/* DomNode */ node, /* String|DomNode|NodeList */ cont, /* Object? */ params){
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// TODO: add all the other options
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// summary:
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// inserts (replaces) the given content into the given node
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// node:
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// the parent element that will receive the content
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// cont:
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// the content to be set on the parent element.
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// This can be an html string, a node reference or a NodeList, dojo.NodeList, Array or other enumerable list of nodes
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// params:
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// Optional flags/properties to configure the content-setting. See dojo.html._ContentSetter
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// example:
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// A safe string/node/nodelist content replacement/injection with hooks for extension
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// Example Usage:
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// dojo.html.set(node, "some string");
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// dojo.html.set(node, contentNode, {options});
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// dojo.html.set(node, myNode.childNodes, {options});
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if(!params){
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// simple and fast
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return dojo.html._setNodeContent(node, cont, true);
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}else{
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// more options but slower
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var op = new dojox.html._ContentSetter(dojo.mixin(
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params,
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{ content: cont, node: node }
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));
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return op.set();
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}
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};
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})();
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