I am trying to reset a filepond field to a default image on user action (ie: clicking on a button).
The file could be local or uploaded somewhere (as AWS) it does not matter.
I currently load a default image when the webpage (and therefore the filepond instance / element) is first loaded, so I guess manually calling the load method would do the trick but I can't manage to do that.
I also try with the file-poster plugin, but there is no way to reset the image after it has been deleted.
If you have found a way of doing this or are thinking about something, please let me know :)
Actually #Rik was right, just use addFile function with the option type: "local".
Related
I'm developing a React App, and I have a backend in NodeJS.
In my Mongo Schema I have an array that stores multiple strings, these strings are some images.
I saved them as base64. Now I want to display them in my app, works perfectly fine with src from img tag, but I want to create a button that allows the user to download those pictures, is there any solution to this? Can I convert back that string and make it downloadable? Thank you very much for you time, I'm waiting for your ideas!
Note: The examples in the snippets will not work live because Stack Overflow sandboxes snippets without allow-downloads, but they should work on your page.
Depending on your exact use case, you have different options. The easiest one would be using an <a> tag with the download attribute instead of a button, like this:
<a download="myImage.gif" href="data:image/gif;base64,R0lGODdhEAAQAMwAAPj7+FmhUYjNfGuxYYDJdYTIeanOpT+DOTuANXi/bGOrWj6CONzv2sPjv2CmV1unU4zPgISg6DJnJ3ImTh8Mtbs00aNP1CZSGy0YqLEn47RgXW8amasW7XWsmmvX2iuXiwAAAAAEAAQAAAFVyAgjmRpnihqGCkpDQPbGkNUOFk6DZqgHCNGg2T4QAQBoIiRSAwBE4VA4FACKgkB5NGReASFZEmxsQ0whPDi9BiACYQAInXhwOUtgCUQoORFCGt/g4QAIQA7">Download GIF</a>
If you need to keep using a button and you want to trigger the download programmatically, you can create an <a> tag (without displaying it) and trigger a click:
const a = document.createElement('a')
a.download = 'myImage.gif'
a.href = 'data:image/gif;base64,R0lGODdhEAAQAMwAAPj7+FmhUYjNfGuxYYDJdYTIeanOpT+DOTuANXi/bGOrWj6CONzv2sPjv2CmV1unU4zPgISg6DJnJ3ImTh8Mtbs00aNP1CZSGy0YqLEn47RgXW8amasW7XWsmmvX2iuXiwAAAAAEAAQAAAFVyAgjmRpnihqGCkpDQPbGkNUOFk6DZqgHCNGg2T4QAQBoIiRSAwBE4VA4FACKgkB5NGReASFZEmxsQ0whPDi9BiACYQAInXhwOUtgCUQoORFCGt/g4QAIQA7'
a.click()
(If you need to support older browsers, you may have to temporarily insert the tag into the DOM and trigger the click in a setTimeout(..., 0).)
You can also use object URLs like it's shown here but it's probably easier to go the data URI route since you already have such a URI.
I am loading image from a URL and it's works as expected.
Scenario when the URL no longer valid, i.e if the image was deleted and I do see the default image displays since I created EncodedImage from the Label icon.
I would like to know if there is anyway I can check if the image has actually loaded from the URL?
What I want to achieve is set a different image to a background if the URL image is not found.
Please advise.
Thank you.
The closest thing is to check if the URLImage's isAnimation() method returns true. If it returns true, then the actual image hasn't been loaded yet. If it returns false, it means that the image is already loaded.
Which system do you use to download the image ? Is the image stocked in the Storage, in the FileSystem ?
If you have dowloaded the image using the ConnectionRequest, you may override it's handleErrorResponseCode method and do something when you have the network error code corresponding to no image ( i.e. 204 : no content).
There are many workarounds for this problem. I use this jQuery one
I have in my node the integer field "teller" and a file field called "bestand".
I would like to increase the teller field when the url of file field bestand is clicked.
Can I do this with rules? Pls some help
Depens a bit on the URL of the file field you are talking about. Is this the file/%file/view url or the actual download url to the uploaded file?
There are quite a few different options but i'm not sure if Rules is the one you are looking for.
Add a JS click handler to the link that fires an Ajax call which updates the 'teller' field. Will not update the 'teller' field if a file url is opened directly.
Override the 'file/%file/view' callback with hook_menu_alter(), add your own magic and at the end return the output of file_entity_view_page();
Implement hook_file_view() and add your custom code there.
If you insist on working with Rules you should probably use the Entity Rules module and catch the 'File is viewed' event.
Kind regards,
Eric Mulder
Inside my WebKitGTK+ widget, I want to transparently replace some of the images of an HTML page with different image data I hold in memory.
According to the documentation at http://webkitgtk.org/reference/webkitgtk/stable/webkitgtk-webkitwebview.html#WebKitWebView-resource-request-starting, I've hooked into this signal, which allows the request URI to be changed, but what I really want is to leave it unchanged but generate my own response.
I've tried filling out the WebKitWebResource parameter, and filling out the SoupMessage response from the WebKitNetworkRequest to no avail. Anyone know how to do this?
figured out one way to do it: replacing the request URL with "data:image/jpeg;base64,[inline data]".
Will do for me.
I am trying to figure out how to make a hyperlink in a Livecycle Form which points to a URL which will change on different days that the form is rendered. For example on one day I might want the hyperlink to point to:
mywebsite/mypage?option=XXX
and on another day I want it to point to:
mywebsite/mypage?option=YYY
The XXX and YYY can be passed into the form's data pretty easily as XML, but I just don't know how to make it so that the hyperlink is changed to correspond to this.
Any suggestions?
This can be accomplished with JavaScript in LiveCycle Designer. The following script, placed on the Form's docReady event will let you dynamically change the URL of a text object.
form1::docReady - (JavaScript, client)
// If this code is running on the server, you don't want it to run any code
// that might force a relayout, or you could get stuck in an infinite loop
if (xfa.host.name != "XFAPresentationAgent") {
// You would load the URL that you want into this variable, based on
// whatever XML data is being passed into your form
var sURL = "www.stackoverflow.com"; // mywebsite/mypage?option=xxx
// URLs are encoded in XHTML. In order to change the URL, you need
// to create the right XHTML string and push it into the Text object's
// <value> node. This is a super simple XHTML shell for this purpose.
// You could add all sorts of markup to make your hyperlink look pretty
var sRichText = "<body><p>Foo</p></body>";
// Assuming you have a text object called "Text1" on the form, this
// call will push the rich text into the node. Note that this call
// will force a re-layout of the form
this.resolveNode("Text1").value.exData.loadXML(sRichText, false, true);
}
There are a couple of caveats: URLs in Acrobat are only supported in Acrobat 9.0 and later. So if someone using an older version of Acrobat opens your form, the URLs won't work.
Also, as you can see from the "if (xfa.host.name !=...)" line, this code won't run properly if the form is being generated on the server, because forcing a re-layout of a form during docReady can cause problems on certain older versions of the LiveCycle server. If you do need to run this script on the server, you should probably pick a different event then form::docReady.
I a number of complaints from users in WorkSpace that clicking links opened them in the same tab so they lost their WorkSpace form, and there's no option to change that in Designer 11. I think the solution I came up with for that would work for you too.
I made buttons with no border and no background, and in their click event have this line (in Javascript, run at client)
app.launchURL("http:/stackoverflow.com/", true);
It would be easy to add some logic to choose the right URL based on the day and it doesn't cause any form re-rendering.
In some spots where the hyperlink is in line with other text, I leave the text of the link blue and underlined but with no hyperlink, and just place the button (no background, no border, no caption) over it. Does require positioned and not flowed subforms for that to work, so depending on your layout it could get a little clunky.
Wow, just realized I am super late to the party. Well, for anyone using ES4 facing a similar problem . . .
Ended up using a 3rd party component to manipulate the PDF's hyperlinks...wish there was a better solution as this one costs about $1000.