Index: chrome/common/extensions/docs/examples/extensions/news_a11y/feed.html |
diff --git a/chrome/common/extensions/docs/examples/extensions/news_a11y/feed.html b/chrome/common/extensions/docs/examples/extensions/news_a11y/feed.html |
index 1c0121f32e7712e93a71214889de229d68cd5764..6c77cff5334dd3ecce85c3f6039daa52518bd42f 100644 |
--- a/chrome/common/extensions/docs/examples/extensions/news_a11y/feed.html |
+++ b/chrome/common/extensions/docs/examples/extensions/news_a11y/feed.html |
@@ -1,381 +1,39 @@ |
<!DOCTYPE html> |
<html> |
-<head> |
-<style> |
-body { |
- font-family: helvetica, arial, sans-serif; |
- font-size: 12px; |
- overflow: hidden; |
-} |
- |
-a { |
- color:#0000CC; |
- text-decoration: underline; |
- cursor: pointer; |
-} |
- |
-.open_box { |
- display: block; |
- overflow: hidden; |
- margin-right: 4px; |
- margin-top: 2px; |
- height: 12px; |
- width: 12px; |
- float: left; |
- clear: left; |
- background-image: url(sprite_arrows.gif); |
- background-position: 0px -24px; |
- cursor: pointer; |
-} |
- |
-.opened .open_box { |
- background-position:-12px -24px; |
-} |
- |
-.item { |
- padding: 2px 0px; |
-} |
- |
-.item_title { |
- display: block; |
- min-width: 300px; |
- padding-left: 15px; |
- cursor: pointer; |
-} |
- |
-.item_desc { |
- min-width: 500px; |
- height: 0px; |
- display: block; |
- border: none; |
- padding: 0px; |
- margin: 0px; |
- -webkit-transition: height 0.2s ease-out; |
-} |
- |
-#title { |
- display: block; |
- margin-left: auto; |
-} |
- |
-.error { |
- white-space: nowrap; |
- color: red; |
-} |
- |
-.more { |
- display: block; |
- text-align: right; |
- padding-top: 20px; |
- padding-right: 10px; |
- color: #88C; |
-} |
- |
-</style> |
-<script id="iframe_script"> |
-function reportHeight() { |
- var msg = JSON.stringify({type:"size", size:document.body.offsetHeight}); |
- parent.postMessage(msg, "*"); |
-} |
- |
-function frameLoaded() { |
- var links = document.getElementsByTagName("A"); |
- for (i = 0; i < links.length; i++) { |
- var class = links[i].className; |
- if (class != "item_title" && class != "open_box") { |
- links[i].addEventListener("click", showStory); |
- } |
- } |
- window.addEventListener("message", messageHandler); |
-} |
- |
-function showStory(event) { |
- var href = event.currentTarget.href; |
- parent.postMessage(JSON.stringify({type:"show", url:href}), "*"); |
- event.preventDefault(); |
-} |
- |
-function messageHandler(event) { |
- reportHeight(); |
-} |
- |
-</script> |
-<script> |
-// Feed URL. |
-var feedUrl = 'http://news.google.com/?output=rss'; |
- |
-// The XMLHttpRequest object that tries to load and parse the feed. |
-var req; |
- |
-function main() { |
- req = new XMLHttpRequest(); |
- req.onload = handleResponse; |
- req.onerror = handleError; |
- req.open("GET", feedUrl, true); |
- req.send(null); |
-} |
- |
-// Handles feed parsing errors. |
-function handleFeedParsingFailed(error) { |
- var feed = document.getElementById("feed"); |
- feed.className = "error"; |
- feed.innerText = "Error: " + error; |
-} |
- |
-// Handles errors during the XMLHttpRequest. |
-function handleError() { |
- handleFeedParsingFailed('Failed to fetch RSS feed.'); |
-} |
- |
-// Handles parsing the feed data we got back from XMLHttpRequest. |
-function handleResponse() { |
- var doc = req.responseXML; |
- if (!doc) { |
- handleFeedParsingFailed("Not a valid feed."); |
- return; |
- } |
- buildPreview(doc); |
-} |
- |
-// The maximum number of feed items to show in the preview. |
-var maxFeedItems = 5; |
- |
-// Where the more stories link should navigate to. |
-var moreStoriesUrl; |
- |
-function buildPreview(doc) { |
- // Get the link to the feed source. |
- var link = doc.getElementsByTagName("link"); |
- var parentTag = link[0].parentNode.tagName; |
- if (parentTag != "item" && parentTag != "entry") { |
- moreStoriesUrl = link[0].textContent; |
- } |
- |
- // Setup the title image. |
- var images = doc.getElementsByTagName("image"); |
- var titleImg; |
- if (images.length != 0) { |
- var urls = images[0].getElementsByTagName("url"); |
- if (urls.length != 0) { |
- titleImg = urls[0].textContent; |
- } |
- } |
- var img = document.getElementById("title"); |
- // Listen for mouse and key events |
- if (titleImg) { |
- img.src = titleImg; |
- if (moreStoriesUrl) { |
- document.getElementById("title_a").addEventListener("click", moreStories); |
- document.getElementById("title_a").addEventListener("keydown", |
- function(event) { |
- if (event.keyCode == 13) { |
- moreStories(event); |
- }}); |
- } |
- } else { |
- img.style.display = "none"; |
- } |
- |
- // Construct the iframe's HTML. |
- var iframe_src = "<!doctype html><html><head><script>" + |
- document.getElementById("iframe_script").textContent + "<" + |
- "/script></head><body onload='frameLoaded();' " + |
- "style='padding:0px;margin:0px;'>"; |
- |
- var feed = document.getElementById("feed"); |
- // Set ARIA role indicating the feed element has a tree structure |
- feed.setAttribute("role", "tree"); |
- |
- var entries = doc.getElementsByTagName('entry'); |
- if (entries.length == 0) { |
- entries = doc.getElementsByTagName('item'); |
- } |
- var count = Math.min(entries.length, maxFeedItems); |
- for (var i = 0; i < count; i++) { |
- item = entries.item(i); |
- |
- // Grab the title for the feed item. |
- var itemTitle = item.getElementsByTagName('title')[0]; |
- if (itemTitle) { |
- itemTitle = itemTitle.textContent; |
- } else { |
- itemTitle = "Unknown title"; |
- } |
- |
- // Grab the description. |
- var itemDesc = item.getElementsByTagName('description')[0]; |
- if (!itemDesc) { |
- itemDesc = item.getElementsByTagName('summary')[0]; |
- if (!itemDesc) { |
- itemDesc = item.getElementsByTagName('content')[0]; |
+ <head> |
+ <link href="feed.css" rel="stylesheet" type="text/css"> |
+ <script id="iframe_script" type="text/not-javascript-i-swear"> |
Boris Smus
2011/10/18 21:51:38
How come we're doing this? Also, we should use an
Mike West
2011/10/19 09:43:57
We're doing this because I was too lazy to rewrite
|
+ function reportHeight() { |
+ var msg = JSON.stringify({type:"size", size:document.body.offsetHeight}); |
+ parent.postMessage(msg, "*"); |
} |
- } |
- if (itemDesc) { |
- itemDesc = itemDesc.childNodes[0].nodeValue; |
- } else { |
- itemDesc = ''; |
- } |
- |
- var item = document.createElement("div"); |
- item.className = "item"; |
- var box = document.createElement("div"); |
- box.className = "open_box"; |
- box.addEventListener("click", showDesc); |
- // Disable focusing on box image separately from rest of tree item |
- box.tabIndex = -1; |
- item.appendChild(box); |
- |
- var title = document.createElement("a"); |
- title.className = "item_title"; |
- // Give title an ID for use with ARIA |
- title.id = "item" + i; |
- title.innerText = itemTitle; |
- title.addEventListener("click", showDesc); |
- title.addEventListener("keydown", keyHandlerShowDesc); |
- // Update aria-activedescendant property in response to focus change |
- // within the tree |
- title.addEventListener("focus", function(event) { |
- feed.setAttribute( |
- "aria-activedescendant", this.id); |
- }); |
- // Enable keyboard focus on the item title element |
- title.tabIndex = 0; |
- // Set ARIA role role indicating that the title element is a node in the |
- // tree structure |
- title.setAttribute("role", "treeitem"); |
- // Set the ARIA state indicating this tree item is currently collapsed. |
- title.setAttribute("aria-expanded", "false"); |
- // Set ARIA property indicating that all items are at the same hierarchical |
- // level (no nesting) |
- title.setAttribute("aria-level", "1"); |
- item.appendChild(title); |
- |
- var desc = document.createElement("iframe"); |
- desc.scrolling = "no"; |
- desc.className = "item_desc"; |
- // Disable keyboard focus on elements in iFrames that have not been |
- // displayed yet |
- desc.tabIndex = -1; |
- item.appendChild(desc); |
- feed.appendChild(item); |
- |
- // The story body is created as an iframe with a data: URL in order to |
- // isolate it from this page and protect against XSS. As a data URL, it |
- // has limited privileges and must communicate back using postMessage(). |
- desc.src="data:text/html," + iframe_src + itemDesc + "</body></html>"; |
- } |
- |
- if (moreStoriesUrl) { |
- var more = document.createElement("a"); |
- more.className = "more"; |
- more.innerText = "More stories \u00BB"; |
- more.tabIndex = 0; |
- more.addEventListener("click", moreStories); |
- more.addEventListener("keydown", function(event) { |
- if (event.keyCode == 13) { |
- moreStories(event); |
- }}); |
- feed.appendChild(more); |
- } |
-} |
- |
-// Show |url| in a new tab. |
-function showUrl(url) { |
- // Only allow http and https URLs. |
- if (url.indexOf("http:") != 0 && url.indexOf("https:") != 0) { |
- return; |
- } |
- chrome.tabs.create({url: url}); |
-} |
- |
-function moreStories(event) { |
- showUrl(moreStoriesUrl); |
-} |
- |
-function keyHandlerShowDesc(event) { |
-// Display content under heading when spacebar or right-arrow pressed |
-// Hide content when spacebar pressed again or left-arrow pressed |
-// Move to next heading when down-arrow pressed |
-// Move to previous heading when up-arrow pressed |
- if (event.keyCode == 32) { |
- showDesc(event); |
- } else if ((this.parentNode.className == "item opened") && |
- (event.keyCode == 37)) { |
- showDesc(event); |
- } else if ((this.parentNode.className == "item") && (event.keyCode == 39)) { |
- showDesc(event); |
- } else if (event.keyCode == 40) { |
- if (this.parentNode.nextSibling) { |
- this.parentNode.nextSibling.children[1].focus(); |
- } |
- } else if (event.keyCode == 38) { |
- if (this.parentNode.previousSibling) { |
- this.parentNode.previousSibling.children[1].focus(); |
- } |
- } |
-} |
- |
-function showDesc(event) { |
- var item = event.currentTarget.parentNode; |
- var items = document.getElementsByClassName("item"); |
- for (var i = 0; i < items.length; i++) { |
- var iframe = items[i].getElementsByClassName("item_desc")[0]; |
- if (items[i] == item && items[i].className == "item") { |
- items[i].className = "item opened"; |
- iframe.contentWindow.postMessage("reportHeight", "*"); |
- // Set the ARIA state indicating the tree item is currently expanded. |
- items[i].getElementsByClassName("item_title")[0]. |
- setAttribute("aria-expanded", "true"); |
- iframe.tabIndex = 0; |
- } else { |
- items[i].className = "item"; |
- iframe.style.height = "0px"; |
- // Set the ARIA state indicating the tree item is currently collapsed. |
- items[i].getElementsByClassName("item_title")[0]. |
- setAttribute("aria-expanded", "false"); |
- iframe.tabIndex = -1; |
- } |
- } |
-} |
- |
-function iframeMessageHandler(e) { |
- // Only listen to messages from one of our own iframes. |
- var iframes = document.getElementsByTagName("IFRAME"); |
- for (var i = 0; i < iframes.length; i++) { |
- if (iframes[i].contentWindow == e.source) { |
- var msg = JSON.parse(e.data); |
- if (msg) { |
- if (msg.type == "size") { |
- iframes[i].style.height = msg.size + "px"; |
- } else if (msg.type == "show") { |
- var url = msg.url; |
- if (url.indexOf("http://news.google.com") == 0) { |
- // If the URL is a redirect URL, strip of the destination and go to |
- // that directly. This is necessary because the Google news |
- // redirector blocks use of the redirects in this case. |
- var index = url.indexOf("&url="); |
- if (index >= 0) { |
- url = url.substring(index + 5); |
- index = url.indexOf("&"); |
- if (index >= 0) |
- url = url.substring(0, index); |
- } |
+ function frameLoaded() { |
+ var links = document.getElementsByTagName("A"); |
+ for (i = 0; i < links.length; i++) { |
+ var c = links[i].className; |
+ if (c != "item_title" && c != "open_box") { |
+ links[i].addEventListener("click", showStory); |
} |
- showUrl(url); |
} |
+ window.addEventListener("message", messageHandler); |
} |
- return; |
- } |
- } |
-} |
-window.addEventListener("message", iframeMessageHandler); |
-</script> |
-</head> |
-<body onload="main();"> |
-<a id="title_a" tabIndex="0"><img id='title' alt="Google News logo"></a> |
-<div id="feed"></div> |
-</body> |
+ function showStory(event) { |
+ var href = event.currentTarget.href; |
+ parent.postMessage(JSON.stringify({type:"show", url:href}), "*"); |
+ event.preventDefault(); |
+ } |
+ |
+ function messageHandler(event) { |
+ reportHeight(); |
+ } |
+ </script> |
+ <script src="feed.js"></script> |
+ </head> |
+ <body> |
+ <a id="title_a" tabIndex="0"><img id='title' alt="Google News logo"></a> |
+ <div id="feed"></div> |
+ </body> |
</html> |