| OLD | NEW |
|---|
| 1 <html> | 1 <html> |
| 2 <head> | 2 <head> |
| 3 <script> | 3 <script> |
| 4 // The Page Action ID. | 4 // The Page Action ID. |
| 5 var pageActionId = "RssPageAction"; | 5 var pageActionId = "RssPageAction"; |
| 6 | 6 |
| 7 // The icons to use. These correspond to the icons listed in the manifest. | 7 // The icon to use. This corresponds to the icon listed in the manifest. |
| 8 var subscribeId = 0; | 8 var subscribeId = 0; |
| 9 var alreadySubscribedId = 1; | |
| 10 | 9 |
| 11 // The window this Page Action is associated with. | 10 // A dictionary keyed off of tabId that keeps track of data per tab (for |
| 12 var windowId = -1; | 11 // example what feedUrl was detected in the tab). |
| 13 | 12 var feedData = {}; |
| 14 // The TabId this Page Action is associated with. | |
| 15 var tabId = -1; | |
| 16 | |
| 17 // The URL of the page that contains the feed. | |
| 18 var pageUrl = ""; | |
| 19 | |
| 20 // The feed URL found on the page. | |
| 21 var feedUrl = ""; | |
| 22 | |
| 23 // The URL to use to check if user is subscribed already. | |
| 24 var subscribedUrl = "http://www.google.com/reader/api/0/subscribed?s=feed%2F"; | |
| 25 | |
| 26 // The XMLHttpRequest object that checks if you are already subscribed. | |
| 27 var req; | |
| 28 | |
| 29 // The status of whether you have already subscribed to this feed or not. | |
| 30 var alreadySubscribed = false; | |
| 31 | |
| 32 function EnableIcon(subscribed) { | |
| 33 alreadySubscribed = subscribed; | |
| 34 if (!alreadySubscribed) { | |
| 35 chrome.pageActions.enableForTab( | |
| 36 pageActionId, {tabId: tabId, | |
| 37 url: pageUrl, | |
| 38 title: "Click to subscribe...", | |
| 39 iconId: subscribeId}); | |
| 40 } else { | |
| 41 chrome.pageActions.enableForTab( | |
| 42 pageActionId, {tabId: tabId, | |
| 43 url: pageUrl, | |
| 44 title: "You are already subscribed to this feed", | |
| 45 iconId: alreadySubscribedId}); | |
| 46 } | |
| 47 } | |
| 48 | 13 |
| 49 chrome.self.onConnect.addListener(function(port) { | 14 chrome.self.onConnect.addListener(function(port) { |
| 50 windowId = port.tab.windowId; | |
| 51 tabId = port.tab.id; | |
| 52 pageUrl = port.tab.url; | |
| 53 | |
| 54 // This will get called from the content script using PostMessage. | 15 // This will get called from the content script using PostMessage. |
| 55 // |feedUrls| is a list of URL feeds found on the page. We only need 1 to | 16 // |feedUrls| is a list of URL feeds found on the page. We only need 1 to |
| 56 // enable the PageAction icon in the Omnibox. | 17 // enable the PageAction icon in the Omnibox. |
| 57 port.onMessage.addListener(function(feedUrls) { | 18 port.onMessage.addListener(function(feedUrls) { |
| 58 feedUrl = feedUrls[0]; | 19 feedUrl = feedUrls[0]; |
| 59 // Let Chrome know that the PageAction needs to be enabled for this tabId | 20 // Let Chrome know that the PageAction needs to be enabled for this tabId |
| 60 // and for the url of this page. | 21 // and for the url of this page. |
| 61 if (feedUrl) { | 22 if (feedUrl) { |
| 62 EnableIcon(false); // Not subscribed (as far as we know, might change). | 23 feedData[port.tab.id] = {pageUrl: port.tab.url, |
| 24 feedUrl: feedUrl}; |
| 63 | 25 |
| 64 // But also check the server to see if we have already subscribed so | 26 chrome.pageActions.enableForTab( |
| 65 // that we can update the status. | 27 pageActionId, {tabId: port.tab.id, |
| 66 feedUrl = encodeURIComponent(feedUrl); | 28 url: port.tab.url, |
| 67 req = new XMLHttpRequest(); | 29 title: "Click to subscribe...", |
| 68 req.onload = handleResponse; | 30 iconId: subscribeId}); |
| 69 req.open("GET", subscribedUrl + feedUrl, false); | |
| 70 req.send(null); | |
| 71 } | 31 } |
| 72 }); | 32 }); |
| 73 }); | 33 }); |
| 74 | 34 |
| 75 function handleResponse() { | |
| 76 if (req.responseText == "true") | |
| 77 EnableIcon(true); // true == Already suscribed. | |
| 78 } | |
| 79 | |
| 80 // Chrome will call into us when the user clicks on the icon in the OmniBox. | 35 // Chrome will call into us when the user clicks on the icon in the OmniBox. |
| 81 chrome.pageActions.onExecute.addListener(function(reply) { | 36 chrome.pageActions["RssPageAction"].addListener(function(reply) { |
| 82 chrome.windows.getCurrent(function(window) { | 37 chrome.windows.getCurrent(function(window) { |
| 83 chrome.tabs.get(reply.data.tabId, function(tab) { | 38 chrome.tabs.get(reply.data.tabId, function(tab) { |
| 84 if (!alreadySubscribed && window.focused) { | 39 // We need to know if we are the active window, because the tab may |
| 85 // We need to know if we are the active window, because the tab may | 40 // have moved to another window and we don't want to execute this |
| 86 // have moved to another window and we don't want to execute this | 41 // action multiple times. |
| 87 // action multiple times. | 42 if (window.focused) { |
| 88 if (reply.pageActionId == pageActionId && | 43 // Create a new tab showing the subscription page with the right |
| 89 reply.data.tabUrl == pageUrl) { | 44 // feed URL. |
| 90 // Create a new tab showing the subscription page with the right | 45 chrome.tabs.create({url: "subscribe.html?" + |
| 91 // feed URL. | 46 feedData[reply.data.tabId].feedUrl, |
| 92 chrome.tabs.create({url: "subscribe.html?" + feedUrl, | 47 windowId: window.windowId}); |
| 93 windowId: windowId}); | |
| 94 } else { | |
| 95 console.log("Ignoring execute event."); | |
| 96 console.log("PageActionId: " + reply.pageActionId + " == " + | |
| 97 pageActionId); | |
| 98 console.log("TabUrl : " + reply.data.tabUrl + " == " + | |
| 99 pageUrl); | |
| 100 } | |
| 101 } | 48 } |
| 102 }); | 49 }); |
| 103 }); | 50 }); |
| 104 }); | 51 }); |
| 52 |
| 53 chrome.tabs.onRemoved.addListener(function(reply) { |
| 54 feedData[reply.tabId] = null; |
| 55 }); |
| 105 </script> | 56 </script> |
| 106 </head> | 57 </head> |
| 107 </html> | 58 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 155514:
Implement extension specific events (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/
