Caching visited page in Jquery Mobile - jquery-mobile

I work on Jquery Mobile/Phonegap app for android.
I´d like my app to "remember" that(if) the user has visited one of my pages. For example if he once visits "page1.html", this action should be cached in the phone memory, so that when the user opens the app again there should be possibility to navigate to this "page2.html" directly from "index.thml".
Please, if you have a code suggestion, tell me also how/where do I use it, because sometimes for starters like me it is realy hard to understand what to do with a little piece code.
Thank you very much!

You can use HTML5 local storage for this purpose.
Each time when a page is shown you can save/update the current page URL to a local storage variable, say 'lastVisit', as below:
$(document).on('pageshow', function (event, data) {
var currentPage = $('.ui-page-active').data('url');
localStorage.setItem("lastVisit", currentPage);
});
If you are not getting $('.ui-page-active').data('url'), then you can use $.mobile.activePage.attr('id') which will give you the current page id.
So next time, when the user opens the app again, you can check whether this local storage variable is set and can action accordingly.
The code will look like as below:
$(document).on('mobileinit', function(){
var lastVisit = '';
if(localStorage.getItem("lastVisit") != null){
lastVisit = localStorage.getItem("lastVisit");
}
if(lastVisit){
document.location.href = lastVisit;
}
});
You can use these codes in the header section scripts.

Related

How to pass data from one page to another page using phonegap for ios

I am new to Phonegap programming.I created one HTML page(ListScreen.html) with NavigationBar plugin.In ListScreen I displayed list of data.When I select the one list item it goes to another HTML page that is DetailsScreen.html page.I tried the code in ListScreen.html as follows:
$(document).on("click", "#lstMyList li" ,function (event) {
window.location.href='DetailsScreen.html';
});
How to send the selected item from ListScreen.html to DetailsScreen.html.Please help me.
You can use local storage. I supports any JavaScript object.
localStorage.setItem("oneKey", anObject);
var anObject = localStorage.getItem("oneKey");
It works perfectly for me. try this way -
var foo = localStorage["bar"];
localStorage["bar"] = foo;

Photoswipe Custom Hashtag Immediately Closes Slideshow

Testing on the desktop with JQM doesn't produce this issue, so it's difficult to pinpoint.
Backstory: I have created server side code (php) to accept a query string and open a gallery straight to a picture. But if a user wants to share a link while surfing a gallery on a mobile device, and in particular a certain photo; most Mobile Browsers share the core link and not the actual photo. It's easy in the events when swiping to create a URL hashtag modifier for the URL with the photo id ( For example #photoID=987), but only if the gallery is originally started with no hashtags. It's then easy to share with a Phone's Native methods.
(function(window, $, PhotoSwipe){
$(document).ready(function(){
//More Code is here but not needed fro this question
$(photoSwipeInstance).bind(PhotoSwipe.EventTypes.onDisplayImage, function(e){
var pid = codeThatGetsPhotoIDFromDisplayedIMGURL();
window.location.hash = '&pid='+pid[0];
});
if(getUrlVars()["pid"]!=null || getUrlVars()["pid"]!=undefined)
{
console.log(getUrlVars()["pid"]);
var photopid= getPhoto(getUrlVars()["pid"]);
photoSwipeInstance.show(photopid);
}
});//End Documentstrong text
}(window, window.jQuery, window.Code.PhotoSwipe));
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
Issue: If a gallery is loaded with a hashtag the gallery will pop up the proper image but then immediately closes the slide show. And every photo past this point performs in the same manner, slideshow opens then closes.
I have turned off all AJAX, and hashtag anchor functions JQM utilizes. This hashtag url functions works as intended when using a Desktop browser but not when using any Mobile browser.
Has someone else tried this functionality?
I probably made this much more confusing then it is in my description.
Answer: JQM's hashtag handlers did not need to be turned off instead. Photoswipe needed this handler added to the options: backButtonHideEnabled: false
JQM's hashtag handlers did not need to be turned off instead. Photoswipe needed this handler added to the options: backButtonHideEnabled: false

Bookmarklet to save URL in Google Spreadsheet

I want to create a simple bookmarklet, that grabs the URL of the current webpage "location.ref" and saves it in a Google Spreadsheet. After it saves it, I want to stay on the current webpage.
The only way I know of writing to Google Spreadsheet is using Google App Script. So I wrote a simple script that does just that:
function doGet(request) {
var ss = SpreadsheetApp.openByUrl( "https://docs.google.com/spreadsheet/ccc?key=<MY-SPREADSHEET-ID>");
var sheet = ss.getSheets()[0];
var headers = ["Timestamp", "url"];
var nextRow = sheet.getLastRow();
var cell = sheet.getRange('a1');
var col = 0;
for (i in headers){
if (headers[i] == "Timestamp"){
val = new Date();
} else {
val = request.parameter[headers[i]];
}
cell.offset(nextRow, col).setValue(val);
col++;
}
return ContentService.createTextOutput(request.parameter.url)
.setMimeType(ContentService.MimeType.TEXT);
}
I published this as a webapp. I wrote the bookmarklet:
<a href="javascript:(
function(){
alert(window.open('https://script.google.com/macros/s/<MYWEBAPP>/exec?url='+encodeURIComponent(location.href), '_self'));
}
)();">
BOOKMARK
</a>
So far so good. It actually works when I click on the bookmarklet, it does grab the URL of the current webpage and save it in my spreadsheet. But then, the webapp returns a text response and the bookmarklet displays the text causing me to move away from my current website.
Is there a way to ignore the response? GAS webapp script requires me to use doGet() that has to return something. Is there a way to not return anything from GAS script? Alternatively, is there a way i could use some other call to replace window.open to invoke the webapp that would allow me to store the response in a variable and ignore it?
I know it's been over a year but I was trying to do exactly this. It took me a while to figure out, but this works. The 1 second delay was necessary to let the script finish loading.
javascript:(function(){
my_window=window.open('https://script.google.com/macros/s/<MYWEBAPP>/exec?url='+encodeURIComponent(location.href)+'&title='+encodeURIComponent(document.title));
(window.setTimeout(function(){my_window.close();},1000));
void(0);
})();
Instead of using window.open you may consider sending a HTTP GET request using XMLHttpRequest.
Refer here on its usage.
Change _self to something else, e.g. bookmarker and it will open in a new window or tab. If you use it on many pages, they will all reuse the same tab if it keeps the same name.

cucumber , jQuery and redirects

I have a select tag on my page, I have made via jQuery on domready a listener for the change event. In this listener I redirect the user to the same page with a parameter in the url.
When I test the functionality manual, it works very well.
When I run the test, it fails, the redirect doesn't work.
How I can make it work ?
#javascript
Scenario:
When I select "2010" from "year_select"
And I wait 5 seconds
Then "2010" should be selected for "year_select"
Then I should see "time_sheet?year=2010" with html
The test fails, I see time_sheet?year=2011 (the default value) in my html source, manual I see the correct value. It is not updated via Javascript, but according to te year variable passed in the url (after the redirect)
My jQuery code:
jQuery(document).ready(function(){
var yearSelect = jQuery("#year_select");
yearSelect.change(function(){
window.location = "/time_sheet_admin?year="+yearSelect.val();
});
});
What I make wrong ?
I think u have missed out _admin in the scenario. Use time_sheet_admin instead of time_sheet in the scenario. If my suggestions is useless sorry for that.
What I usually do for testing complex JS stuff is to put them in a function and then test if that function was called:
selectChanged = function() {
window.location = "/time_sheet_admin?year="+jQuery("#year_select").val();
}
*note no need for the variable assignment because you only called it once.
then in your feature:
Then I should see "time_sheet?year=2010" in the url
step definition:
When /Then I should see "time_sheet?year=2010" in the url/ do |seconds|
page.execute_script("selectChanged()")
end

sIFR3 show text while loading

I am using sIFR3 on a website. I remember in sIFR2 you coul use this sIFR.bHideBrowserText = false; to show the text before sIFR kicks in.
How do you do this in sIFR3 and where do you put the code?
Thanks for your help.
C
The feature as it existed in sIFR 2 no longer exists in sIFR 3. You could achieve the same affect like this, though:
sIFR.autoInitialize = false;
sIFR.activate(movie);
sIFR.removeFlashClass();
sIFR.replace(movie, { selector: 'h1' });
window.onload = function(){
sIFR.setFlashClass();
sIFR.initialize();
};
Where, of course, movie is the appropriate variable that references the Flash movie. You might want to connect to the onload event through another JavaScript framework. You must wait until full page load, things like $(document).ready() (jQuery) will not work reliably cross-browser.

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