I am new to chrome extensions.I used chrome.runtime.onInstalled to load a html page whenever the extension is installed or updated.But when i am testing it in chrome, whenever i check/uncheck Allow in incognito the same html page loads each time.How to avoid this behaviour? I used "incognito":"split" in manifest.
I wish you'd posted the code so I could try to replicate the problem and give a specific solution but the easy solution is to use chrome storage API to save the extension's version when welcome.html is opened and compare it to the current version next time onInstalled is fired.
If the stored version is the same don't open it. If it's undefined or older, open it.
Get your extension's version by extracting it from chrome.extension.getURL("manifest.json")
Edit:
After a bit of googling it seems you can access the manifest more directly. Get the version number using the code below.
var version = chrome.runtime.getManifest().version;
Edit:
It seems the previous version is supplied in the callback when you update so you don't need to store anything. The object provided can be compared to the current version using chrome.runtime.getManifest().version
Something like this:
chrome.runtime.onInstalled.addListener(function (details) {
if(details.reason === "install"){
chrome.tabs.create({url: "welcome.html"});
}
else if(details.reason === "update"){
var currentVersion = chrome.runtime.getManifest().version;
var previousVersion = details.previousVersion;
if(previousVersion !== currentVersion){
chrome.tabs.create({url: "welcome.html"});
}
}
});
I don't think you can. I assume that when you uncheck "Allow in incognito", Chrome nukes the local state of the (split) incognito instance.
Related
I am implementing an appium test on remote android driver, with chrome browser for loading urls.
Some of the Urls are pdfs, and chrome asks to store those files. and appears that chrome doesnt have access to filesystem to store those files, which results in a dialog like below.
Please help me pass that dialog without any manual inputs.
Upon clicking continue, it will load actual permissions dialog from Android.
Here is my code initialize appium capabilities
DesiredCapabilities caps = DesiredCapabilities.android();
caps.setCapability("appiumVersion", "1.9.1");
caps.setCapability("deviceName","Samsung Galaxy S9 Plus HD GoogleAPI Emulator");
caps.setCapability("deviceOrientation", "portrait");
caps.setCapability("browserName", "Chrome");
caps.setCapability("platformVersion", "8.1");
caps.setCapability("platformName","Android");
caps.setCapability("autoAcceptAlerts", true);
caps.setCapability("autoGrantPermissions", true);
caps.setCapability("chromedriverArgs", "--allow-file-access-from-files");
caps.setCapability("maxDuration", 10000);
and this is the snippet I use to load a Url
driver.navigate().to("http://kmmc.in/wp-content/uploads/2014/01/lesson2.pdf");
autoGrantPermission also doesnt work in this case because chrome is already installed. Appium team has already rejected this issue -
https://github.com/appium/appium/issues/10008
Please help!
Indeed I had very hard time finding out the solution, but eventually I found a workaround.
The best workaround would have been reinstalling the chrome package. I tried that, but I could not start chrome after reinstalling it, as I had no access to shell, and chromedriver complained. So I left that track.
I tried getting hold of adb command or mobile:changePermissions but for that you need to use server flag --relaxed-security while starting the server, and saucelabs doesnt provide any handy interface to start the server with this flag.
The last resort, I found a solution here - https://stackoverflow.com/a/51241899/4675277 . But just that was not sufficient, because it helped me fix chrome alert, but later on it popped up with another alert with allow and deny, for which another solution in the same question helped me. So this is the code I eventually used -
driver.navigate().to("http://kmmc.in/wp-content/uploads/2014/01/lesson2.pdf");
String webContext = ((AndroidDriver)driver).getContext();
Set<String> contexts = ((AndroidDriver)driver).getContextHandles();
for (String context: contexts){
if (context.contains("NATIVE_APP")){
((AndroidDriver)driver).context(context);
break;
}
}
driver.findElement(By.id("android:id/button1")).click();
contexts = ((AndroidDriver)driver).getContextHandles();
for (String context: contexts){
if (context.contains("NATIVE_APP")){
((AndroidDriver)driver).context(context);
break;
}
}
driver.findElement(By.id("com.android.packageinstaller:id/permission_allow_button")).click();
((AndroidDriver)driver).context(webContext);
This helps allow all permissions required.
I was trying to get the version of my extension at run-time using chrome.app.getDetails().version and noticed that chrome.app.getDetails() returns null. Surprisingly, there is no talk about this in the online community and the function isn't even documented by the Google folks. Is there a permission I am missing? I do have tabs enabled.
Very old... I know
But in case if someone is looking for this, you can have your extension version reading the manifest file with chrome.runtime API and the getManifest Method.
Ex. in your background script:
var manifest = chrome.runtime.getManifest();
var current_version = manifest.version;
console.info('Current Version: ', current_version);
The object returned is a serialization of the full manifest file, so you can get all the info in the manifest file
So.. if you want for example all and only the matches of your content_scripts... for say something...
for(var i in manifest.content_scripts) {
console.log(manifest.content_scripts[i]['matches']));
}
Note: Stable since Chrome 22
It's undocumented because they might be moving getDetails to a different part of the API -- see this bug. It's currently working on my copy of Chrome (beta channel), but I wouldn't be surprised if they've disabled it in a newer release. In the meantime you can just do an AJAX query to get the manifest.json of your extension -- you can get its URI using chrome.extension.getURL("manifest.json").
Here is what I'm using to pull the current version.
var manifest = new XMLHttpRequest();
manifest.open("get", "/manifest.json", true);
manifest.onreadystatechange = function (e) { if (manifest.readyState == 4) {console.log(JSON.parse(manifest.responseText).version)} };
manifest.send({});
I'm playing with the IndexedDB API from html5 spec in both Firefox and Chrome.
There something that's not working as expected I and want to share it here because I don't know if it's my fault or a browser bug.
According to the API, there's an event called onversionchange that's fired when you open a connection to a local database and the version number used is greater than the databases one.
My problem is that this event is being fired in Firefox but not in Chrome.
Some sample code trying several modes:
var db;
var DB_VERSION = 5;
var openRequest = indexedDB.open("test_db", DB_VERSION);
openRequest.onsuccess = function(event) {
db = openRequest.result;
};
openRequest.onversionchange = function(event) {
console.log("This is the place where I can change db structure");
};
openRequest.onupgradeneeded = function(event) {
console.log("This is the place where I can change db structure");
};
onversionchage event is not being fired even when I change the version number.
UPDATE
As ebidel has answered, Chrome implementation does not follow the currently specification so, in order to have a cross browser client code, we need to handle two situations: onversionchange event and database.version manual comparison.
Here are a couple on links with code example:
Chromium google group and
HTML5 Rocks!
Chrome's IndexedDB implementation is based off an older version of the spec which uses the older setVersion call rather than onversionchange/onupgradeneeded. Please star this issue: http://crbug.com/108223
Is there a Chrome extension post install hook/API function that will let me perform an action after the plugin is installed or updated?
I would like to perform an action after my extension is installed, and only right after it is installed. This action should only be performed once (post-install or post-update) of the extension.
Update
Some people have proposed setting the version of the extension in localStorage, the problem that I have is that the content script that has access to localStorage is not loaded into the page when the plugin is first installed.
AFAIK after a plugin is installed, and it makes use of a content script injected into the tab/page, the page has to be reloaded.
I don't know how to access localStorage from the background page; localStorage can only be accessed from a content script.
To get the version number from the background page to the content script requires the use of chrome API function to execute scripts:
chrome.tabs.executeScript(null, {code:function_to_execute}, function() { // callback });
However, when you install a plugin, and the page that this plugin needs to inject a content script into is already loaded, it does not inject the content script, you have to reload the page.
update 2
Looking at some of the tips provided in more detail, for the purpose of saving the version number, it is possible to access the localStorage of the background page. However, for what I need to do, which is reload a specific tab at a specific URL (in order to make sure the content script is the newest version) after installing or updating a plugin, it ended up being unnecessary to bother with localStorage.
For the sake of staying on topic, the advice given about writing the version number to localStorage (in the background page) and then checking against the version number in the manifest file is good enough to allow someone to run a script the first time it is installed/or updated.
HowTo
Make manifest file available to the background page (note: this is taken from somewhere else, I don't take credit for it, but I can't remember the source, if you know, let me know and I will add it).
// MAKE MANIFEST FILE AVAILABLE
chrome.manifest = (function() {
var manifestObject = false;
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == 4) {
manifestObject = JSON.parse(xhr.responseText);
}
};
xhr.open("GET", chrome.extension.getURL('/manifest.json'), false);
try {
xhr.send();
} catch(e) {
console.log('Couldn\'t load manifest.json');
}
return manifestObject;
})();
Now you can access your version number like this: chrome.manifest.version
To write to localStorage just pass it in like so: localStorage['my_plugin_version'] = chrome.manifest.version
You can do this using a background page. When the extension is installed, the background page is opened in the background, and thus executed. To make sure it's not executed every time, simply store a value in localStorage.
Using HTML5 manifest file and cache is working fine.
I use window.applicationCache.update() to download the updated version. works fine.
How can I check to see if the manifest file has been updated so an update is available but not start downloading. Reason for this I want the user to allow the update or not as they may be in a bad network connection area.
Try this:
// Check if a new cache is available on page load.
window.addEventListener('load', function(e) {
window.applicationCache.addEventListener('ondownloading', function(e) {
window.applicationCache.abort();
}, false);
}, false);
Just abort the download when you catch the ondownloading event.
You can see all the available events here
There is not an event like that.
Browser checks the update of the manifest file and download the new added files automatically. You can check current state of the cache using its status property. It may have six different values. You can see the available status properties here. Then you can use applicationCache.swapCache() for swapping according to Your/User need.