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/*
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purple-include.js -- Purple Include (version 0.8)
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Based on Mark Nottingham's most excellent hinclude.js (version 0.9)
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Copyright (c) 2007 Jonathan Cheyer <jonathan@cheyer.biz>,
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Eugene Eric Kim <eekim@blueoxen.com>,
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Brad Neuberg <bradneuberg@yahoo.com>
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Copyright (c) 2005-2006 Mark Nottingham <mnot@pobox.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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-------------------------------------------------------------------------------
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See http://blueoxen.net/c/purple/purple-include/ for documentation.
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See http://www.mnot.net/javascript/hinclude/ for hinclude documentation.
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TODO:
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- check navigator property to see if browser will handle this without
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javascript
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-------------------------------------------------------------------------------
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*/
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var hinclude = {
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set_content_async: function (url, element, req) {
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if (req.readyState == 4) {
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element.className = "included include_" + req.status;
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if (req.status == 200 | req.status == 304) {
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this.setHTML(url, req.responseText, element);
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}else{
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var origURL = url;
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if(url.indexOf("purple-proxy.php") != -1){
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origURL = url.match(/(https?:.*$)/i)[1];
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}
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element.innerHTML = "<p>Include error for " + url + ": "
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+ req.status + "</p>";
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element.className += " include_error";
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}
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}
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},
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buffer: new Array(),
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set_content_buffered: function (url, element, req) {
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if (req.readyState == 4) {
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hinclude.buffer.push({url: url, element: element, req: req});
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hinclude.outstanding--;
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if (hinclude.outstanding == 0) {
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hinclude.show_buffered_content();
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}
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}
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},
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show_buffered_content: function () {
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while (hinclude.buffer.length > 0) {
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var include = hinclude.buffer.pop();
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include.element.className = "included include_"
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+ include.req.status;
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if (include.req.status == 200 | include.req.status == 304) {
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var replaceMe = include.element;
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this.setHTML(include.url, include.req.responseText,
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include.element);
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}else{
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var origURL = include.url;
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if(include.url.indexOf("purple-proxy.php") != -1){
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origURL = include.url.match(/(https?:.*$)/i)[1];
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}
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include.element.innerHTML = "<p>Include error for " + origURL
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+ ": " + include.req.status
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+ "</p>";
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include.element.className += " include_error";
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}
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}
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},
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setHTML: function (url, html, element) {
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// parse out the anchor
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url = decodeURI(url);
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var anchor = url.match(/#xpath!(.*)$/);
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if(anchor){ // xpath! style
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anchor = anchor[1];
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}else{
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anchor = url.match(/#(.*)$/);
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if (anchor) { // purple number or anchor
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anchor = "//a[@name='" + anchor[1] + "' or "
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+ "@id='" + anchor[1] + "']/.."
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+ " | "
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+ "//p[@name='" + anchor[1] + "' or "
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+ "@id='" + anchor[1] + "']";
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}
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else { // nothing; just grab whole document
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anchor = "/body";
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}
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}
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// simply write the HTML/XHTML into an iframe
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// and then get our DOM document -- this is the
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// only way to deal with unformed HTML, and it
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// actually turns out to be a more robust way of
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// dealing with XHTML than the DOMParser since
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// malformed XHTML will still work in an iframe,
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// but the DOMParser throws exceptions (and almost
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// everyone's XHTML is actually broken)
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var f = document.createElement("iframe");
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f.style.display = "none";
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document.getElementsByTagName("body")[0].appendChild(f);
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var doc = f.contentDocument;
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var self = this;
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// the iframe doesn't immediately parse the content --
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// it can take an arbitrary amount of time, so register
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// ourselves to continue working once the iframe is
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// finished loading
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f.onload = function(){
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var origURL = url;
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if(url.indexOf("purple-proxy.php") != -1){
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origURL = url.match(/(https?:.*$)/i)[1];
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}
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// find XPath matches and serialize
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var isXML = /<\?xml/.test(html);
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html = "";
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var matches;
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var exp = null;
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try{
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matches = self.evaluateXPath(doc, anchor, isXML);
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}catch(e){
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exp = e;
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}
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if(!exp && matches){
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for(var i = 0; i < matches.length; i++){
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html += (new XMLSerializer()).serializeToString(matches[i])
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+ "\n";
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}
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}
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if(!exp && !matches.length){
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html = "<p>No include match for " + origURL + "</p>";
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element.className += " include_error";
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}else if(exp){
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html = "<p>Invalid include address for " + origURL + ": "
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+ exp.message + "</p>";
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element.className += " include_error";
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}
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// inline our HTML fragment now, to replace the
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// hx:include element
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element.innerHTML = html;
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};
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// now have the iframe do its magic
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doc.open();
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doc.write(html);
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doc.close();
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},
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evaluateXPath: function (aDoc, aExpr, isXML) {
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var nsResolver = (isXML == false) ? null : function (prefix) {
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return 'http://www.w3.org/1999/xhtml';
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};
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var nodes = aDoc.evaluate(aExpr, aDoc.documentElement, nsResolver,
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XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
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null);
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var results = [];
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for(var i = 0; i < nodes.snapshotLength; i++){
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results.push(nodes.snapshotItem(i));
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}
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return results;
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},
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outstanding: 0,
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run: function () {
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var mode = this.get_meta("include_mode", "buffered");
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var callback = function(element, req) {};
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var includes = document.getElementsByTagName("hx:include");
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if (includes.length == 0) { // remove ns for IE
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includes = document.getElementsByTagName("include");
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}
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if (mode == "async") {
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callback = "set_content_async";
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} else if (mode == "buffered") {
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callback = "set_content_buffered";
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var timeout = this.get_meta("include_timeout", 2.5) * 1000;
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setTimeout("hinclude.show_buffered_content()", timeout);
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}
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for (var i=0; i < includes.length; i++) {
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includes[i].innerHTML = '<img src="roller.gif" />';
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this.include(includes[i], includes[i].getAttribute("src"),
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callback);
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}
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},
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include: function (element, url, incl_cb) {
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var scheme = url.substring(0,url.indexOf(":"));
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if (scheme.toLowerCase() == "data") { // just text/plain for now
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data = unescape(url.substring(url.indexOf(",") + 1, url.length));
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element.innerHTML = data;
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}else {
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if(scheme) {
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var url_base = this.get_meta("purple_proxy_path",
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"/hypertext/purple-include/purple-proxy.php");
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url = url_base + "?url=" + encodeURI(url);
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}
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var req = false;
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if(window.XMLHttpRequest) {
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try {
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req = new XMLHttpRequest();
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} catch(e) {
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req = false;
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}
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} else if(window.ActiveXObject) {
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try {
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req = new ActiveXObject("Microsoft.XMLHTTP");
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} catch(e) {
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req = false;
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}
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}
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if(req) {
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this.outstanding++;
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var self = this;
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req.onreadystatechange = function() {
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self[incl_cb](url, element, req);
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};
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try {
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req.open("GET", url, true);
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req.send("");
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} catch (e) {
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this.outstanding--;
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alert("Include error: " + url + " (" + e + ")");
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}
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}
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}
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},
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get_meta: function (name, value_default) {
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var metas = document.getElementsByTagName("meta");
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for (var m=0; m < metas.length; m++) {
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var meta_name = metas[m].getAttribute("name");
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if (meta_name == name) {
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return metas[m].getAttribute("content");
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}
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}
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return value_default;
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},
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/*
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* (c)2006 Dean Edwards/Matthias Miller/John Resig
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* Special thanks to Dan Webb's domready.js Prototype extension
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* and Simon Willison's addLoadEvent
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*
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* For more info, see:
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* http://dean.edwards.name/weblog/2006/06/again/
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* http://www.vivabit.com/bollocks/2006/06/21/a-dom-ready-extension-for-prototype
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* http://simon.incutio.com/archive/2004/05/26/addLoadEvent
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*
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* Thrown together by Jesse Skinner (http://www.thefutureoftheweb.com/)
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*
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*
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* To use: call addDOMLoadEvent one or more times with functions, ie:
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*
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* function something() {
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* // do something
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* }
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* addDOMLoadEvent(something);
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*
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* addDOMLoadEvent(function() {
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* // do other stuff
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* });
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*
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*/
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addDOMLoadEvent: function(func) {
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if (!window.__load_events) {
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var init = function () {
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// quit if this function has already been called
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if (arguments.callee.done) return;
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// flag this function so we don't do the same thing twice
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arguments.callee.done = true;
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// kill the timer
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if (window.__load_timer) {
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clearInterval(window.__load_timer);
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window.__load_timer = null;
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}
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// execute each function in the stack in the order they were added
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for (var i=0;i < window.__load_events.length;i++) {
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window.__load_events[i]();
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}
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window.__load_events = null;
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// clean up the __ie_onload event
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/*@cc_on @*/
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/*@if (@_win32)
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document.getElementById("__ie_onload").onreadystatechange = "";
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/*@end @*/
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};
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// for Mozilla/Opera9
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if (document.addEventListener) {
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document.addEventListener("DOMContentLoaded", init, false);
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}
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// for Internet Explorer
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/*@cc_on @*/
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/*@if (@_win32)
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document.write("<scr"+"ipt id=__ie_onload defer src=javascript:void(0)><\/scr"+"ipt>");
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var script = document.getElementById("__ie_onload");
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script.onreadystatechange = function() {
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if (this.readyState == "complete") {
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init(); // call the onload handler
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}
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};
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/*@end @*/
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// for Safari
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if (/WebKit/i.test(navigator.userAgent)) { // sniff
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window.__load_timer = setInterval(function() {
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if (/loaded|complete/.test(document.readyState)) {
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init(); // call the onload handler
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}
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}, 10);
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}
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// for other browsers
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window.onload = init;
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// create event function stack
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window.__load_events = [];
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}
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// add function to event stack
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window.__load_events.push(func);
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}
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}
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hinclude.addDOMLoadEvent(function() { hinclude.run(); });
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/* Simon Willison - http://simonwillison.net/2004/May/30/plinks/ */
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function plinkHighlight() {
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if (/#p-/.test(document.location)) {
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// The user arrived via a plink
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var plink_id = document.location.href.split('#')[1];
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var para = document.getElementById(plink_id);
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para.className = para.className + ' plinkHighlight';
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}
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}
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function addpLinks() {
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var paras = document.getElementsByTagName('p');
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for (var i = 0; i < paras.length; i++) {
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var current = paras[i];
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if (/^p-/.test(current.id)) {
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// It's a purple link paragraph
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var plink = document.createElement('a');
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plink.href = document.location.href.split('#')[0] + '#' + current.id;
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plink.className = 'plink';
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plink.appendChild(document.createTextNode(' #'));
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current.appendChild(plink);
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}
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}
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}
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function addLoadEvent(func) {
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var oldonload = window.onload;
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if (typeof window.onload != 'function') {
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window.onload = func;
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} else {
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window.onload = function() {
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oldonload();
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func();
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}
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}
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}
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addLoadEvent(addpLinks);
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addLoadEvent(plinkHighlight);
|
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