I'm creating a custom label maker using Konvajs and everything was working perfectly until I tried to serialize the stage to JSON.
The user creates their custom label in three steps. The first step they select a template image from our library that has a masked area. The second step allows them to upload a personalized image that is placed behind the image that was loaded on the first step. There are external controls that allow the user to scale and move the image so it is rendered with in the masked area. The third step allows them to add text.
I want the user to be able to save their label to their library so they can use it again, but be able to modify any of the three steps. This means I need to serialize the stage to a JSON string, but the image attributes aren't saved in the JSON.
JSON String:
{"attrs":{"width":500,"height":667,"id":"label-maker"},"className":"Stage","children":[{"attrs":{},"className":"Layer","children":[{"attrs":{"name":"template"},"className":"Image"}]},{"attrs":{},"className":"Layer","children":[{"attrs":{"x":160,"y":41.5,"text":"[Enter Name Here]","fontSize":30,"fontFamily":"Calibri","fill":"#555","name":"textundefined","align":"center","draggable":true,"offsetX":114.22119140625},"className":"Text"}]}]}
I'm using the Konvajs toJSON() to serialize my stage.
function save() {
var json = stage.toJSON();
var dataURL = stage.toDataURL('image/png');
//alert(json);
$.ajax({
type: "POST",
url: "label-maker/image-handler.php?action=save",
data: {jsonFileText: json, image: dataURL},
error: function (request, error) {
console.log(arguments);
alert(" Can't do because: " + error);
},
success: function () {
alert(" Done ! ");
}
});
}
By default Konva doesn't save information about image source to JSON. So you have to do this manually.
When you create Konva.Image you can save its source as attribute:
// path is url or base64 string from user's input
imageNode.setAttr('src', path);
Then on deserialization you can load image data from source:
const stage = Konva.Node.create(json, 'container');
stage.find('Image').forEach((imageNode) => {
const src = imageNode.getAttr('src');
const image = new Image();
image.onload = () => {
imageNode.image(image);
imageNode.getLayer().batchDraw();
}
image.src = src;
});
Related
I have an editor page. When I add any content and click the "Save" button my URL will change, adding a random id in the URL. I want to check if my ID's are changing every time when I click the "Save button".
I save the URL result in variable and want to check it, I do it like this:
const currentURL = cy.url();
cy.get('.editor-toolbar-actions-save').click();
cy.url().should('not.eq', currentURL);
But my currentURL variable's type is not string:
expected http://localhost:8080/editor/37b44d4d-48b7-4d19-b3de-56b38fc9f951 to not equal { Object (chainerId, firstCall) }
How I can use my variable?
tl;dr
Cypress commands are asynchronous, you have to use then to work with their yields.
cy.url().then(url => {
cy.get('.editor-toolbar-actions-save').click();
cy.url().should('not.eq', url);
});
Explanation
A similar question was asked on GitHub, and the official document on aliases explains this phenomenon in great detail:
You cannot assign or work with the return values of any Cypress command. Commands are enqueued and run asynchronously.
The solution is shown too:
To access what each Cypress command yields you use .then().
cy.get('button').then(($btn) => {
// $btn is the object that the previous
// command yielded us
})
It is also a good idea to check out the core concepts docs's section on asynchronicity.
These commands return a chainable type, not primitive values like strings, so assigning them to variables will require further action to 'extract' the string.
In order to get the url string, you need to do
cy.url().then(urlString => //do whatever)
I have been having the same issue and so far most consistent method has been to save the URL to file and read it from file when you need to access it again:
//store the url into a file so that we can read it again elsewhere
cy.url().then(url => {
const saveLocation = `cypress/results/data/${Cypress.spec.name}.location.txt`
cy.writeFile(saveLocation, getUrl)
})
//elsewhere read the file and do thing with it
cy.readFile(`cypress/results/data/${Cypress.spec.name}.location.txt`).then((url) => {
cy.log(`returning back to editor ${url}`)
cy.visit(url)
})
Try this:
describe("Test Suite", () => {
let savedUrl;
beforeEach(() => {
cy.visit("https://duckduckgo.com/");
cy.url().then(($url) => {
savedUrl = $url;
});
});
it("Assert that theURL after the search doens't equal the URL before.", () => {
cy.get("#search_form_input_homepage").type("duck");
cy.get("#search_button_homepage").click();
// Check if this URL "https://duckduckgo.com/?q=duck&t=h_&ia=web"
// doesn't equal the saved URL "https://duckduckgo.com/"
cy.url().should("not.eq", savedUrl);
});
});
Refer below code snippet, Here you can get the current URL and store it in a variable, do print via cy.log()
context('Get Current URL', () => {
it('Get current url and print', () => {
cy.visit('https://docs.cypress.io/api/commands/url')
cy.url().then(url => {
const getUrl = url
cy.log('Current URL is : '+getUrl)
})
})
})
#Max thanks this helped to get some ideas on different versions.
The way I did it is:
Create a .json file in your fixtures folder (name it whatever you want).
On the new .json file, only add: { } brackets and leave the rest blank. The function will self populate that .json file.
Create a new function on the commands page to easily call it on your test.
It would probably be best to create two functions, 1 function to write url or the sliced piece of the url, and the another function to call it so you can use it.
A. Example of 1st method, this method cuts the id off of the URL and stores it on the .json file:
Cypress.Commands.add('writeToJSON', (nameOfJSONSlicedSection) =>
{
cy.url().then(urlID =>
{
let urlBit = urlID.slice(urlID.indexOf('s/') + 2, urlID.indexOf('/edit'))
cy.writeFile('cypress/fixtures/XYZ.json', {name: nameOfJSONSlicedSection, id: urlBit}) /*{ }<-- these will populate the json file with name: xxxxx and id:xxxxx, you can changes those to whatever meets your requirements. using .slice() to take a section of the url. I needed the id that is on the url, so I cut only that section out and put it on the json file.*/
})
})
B. 2nd example function of calling it to be used.
This function is to type in the id that is on the url into a search box, to find the item I require on a different it() block.
Cypress.Commands.add('readJSONFile', (storedJSONFile) =>
{
cy.readFile('cypress/fixtures/XYZ.json').its('id').then((urlSetter) => {
cy.log(storedJSONFile, 'returning ID: ' + urlSetter)
//Search for Story
cy.get('Search text box').should('be.visible').type(urlSetter, {delay: 75})
})
})
/*here I use a .then() and hold the "id" with "urlSetter", then I type it in the search box to find it by the id that is in the URL. Also note that using ".its()" you can call any part section you require, example: .its('name') or .its('id') */
I hope this helps!
I don't need a concret solution, but someone that gives me a closer hint to solve my problem. I have an ruby on rails 4 intranet application, that is login protected. In this application I have an editing page, where I also use TinyMCE. It has the ability to give it an URL where to send the picture to for uploading it (see here).
I implemented the upload routine with CarrierWave and it works great outside of TinyMCE. If it's possible I would also keep that plugin.
But as I said CarrierWave is currently not working with TinyMCE and an asynchronous upload.
So do you have an idea how I can upload an image, but with correct session token (asynchronously). And the picture URL that not saving the database, but in the text shown in TinyMCE. Is there a plugin that can help me or anything else?
If you need closer information please tell me.
Best regards
Marco
You have to use the image plugin for TinyMCE and set file_picker properties and callbacks, so you can attach files from client-side, rather than URL.
tinymce.init({
// Include image plugin on plugin list
plugins: [ 'image'],
// Include image button on toolbar
toolbar: ['image'],
// Enable title field in the Image dialog
image_title: true,
// Enable automatic uploads of images represented by blob or data URIs
automatic_uploads: true,
// URL of your upload handler
// (YOU SHOULD MAKE AN ENDPOINT TO RECEIVE THIS AND RETURN A JSON CONTAINING: {location: remote_image_url})
images_upload_url: '/text_images',
// Here we add custom filepicker only to Image dialog
file_picker_types: 'image',
// And here's your custom image picker
file_picker_callback: function(cb, value, meta) {
var input = document.createElement('input');
input.setAttribute('type', 'file');
input.setAttribute('accept', 'image/*');
input.onchange = function() {
var file = this.files[0];
// Note: Now we need to register the blob in TinyMCEs image blob
// registry.
var id = 'blobid' + (new Date()).getTime();
var blobCache = tinymce.activeEditor.editorUpload.blobCache;
var blobInfo = blobCache.create(id, file);
blobCache.add(blobInfo);
// Call the callback and populate the Title field with the file name
cb(blobInfo.blobUri(), { title: file.name });
};
input.click();
}
});
Add text_images to your route.rb file:
match "text_images" => "text_images#create", via: :post
And create your proccessing action like this:
def create
if params[:file].class == ActionDispatch::Http::UploadedFile
#image = Picture.new(image: params[:file])
respond_to do |format|
if #image.save
format.json { render json: { "location": #image.image.url }.to_json, status: :ok }
else
format.json { render json: #image.errors, status: :unprocessable_entity }
end
end
end
end
This is a very crude implementation, you should make it more secure for your application context, validating and filtering large or invalid files!
UPDATE: There was a recent upgrade on the syntax for new versions of TinyMCE for the onchange function to include a result reader attribute on the create method of the blobCache object:
input.onchange = function() {
var file = this.files[0];
var reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function () {
// Note: Now we need to register the blob in TinyMCEs image blob
// registry. In the next release this part hopefully won't be
// necessary, as we are looking to handle it internally.
var id = 'blobid' + (new Date()).getTime();
var blobCache = tinymce.activeEditor.editorUpload.blobCache;
var blobInfo = blobCache.create(id, file, reader.result);
blobCache.add(blobInfo);
// call the callback and populate the Title field with the file name
cb(blobInfo.blobUri(), { title: file.name });
};
};
One of my multi-steps Zaps has a Zapier.Webhook-GET as a step 2.
Step 3 is Zapier.RunScript-Javascript.
I can´t figure out a way to set up that intire JSON object resulted from step 2 as the input variable required for step 3. The list of options shows only children and nested fields, but I need to take the object from the root.
I don't believe Zapier will allow that, specifically.
Here's an alternative that may work perfectly: Put the GET in the step 3 script and use fetch!
Here's an example:
//Put in your url with querystring
var url = "https://somewhere.com/rest?para1=value1";
//Add the method and headers here
fetch(url, {method: "GET", headers: {"Content-Type": "application/json"}})
.then(function (response) {
console.log(response);
return response.json();
}).then(function (data) {
//This is the entire JSON. Put your code here
// Remember to do a callback! Do not set to "output"
console.log(data);
//This will return data as output
callback(null, data);
});
//Code here will execute BEFORE code within the then functions because it's asynchronus
See this link for more on fetch: https://github.com/bitinn/node-fetch/tree/32b60634434a63865ea3f79edb33d17e40876c9f#usage
Hope this helps!
I'm using the cordova screenshot plugin : https://github.com/gitawego/cordova-screenshot to take a screenshot in my iPhone using this code :
navigator.screenshot.save(function (error, res) {
if (error) {
console.log('Screenshot error');
console.error(error);
} else {
console.log('screenshot ok', res.filePath);
}
}, 'jpg', 50, 'project-X-result');
It seems to work (i have no error) but I can't find the screenshot in the Photos Library. Is it possible to save it in this library?
How should I do? Using another plugin to move the file? (where should it be moved exactly?) Editing the plugin to save it directly in the library? (where should it be saved exactly?)
I just ran through the same problem. It took several days but I figured out how to do it.
It does involve another plugin Canvas2Image plugin. I didn't think it would work, but I was desperate and it did work in the end. Here's how I did it.
If you are getting the console.log for screenshot ok, then you are in good shape. The next thing you will need to do is install Canvas2Image with your CLI like so:
cordova plugin add https://github.com/devgeeks/Canvas2ImagePlugin.git
(or replace 'cordova' with 'phonegap' if you use that instead.)
Next, you will need to add a function (in this case saveImageToPhone()) that calls the plugin you just added to your project. This function will be called from your navigator.screenshot.save() function you already have. We will add that function call to your screenshot.save success block, right after the console.log line.
The key here is using that filePath property that we get back in the success block; That's our absolute path to the image we just saved to the temp folder in iOS. We will simply pass that path to the second function and let it do its work.
Here's those two functions from my code:
function saveScreen(){
navigator.screenshot.save(function(error,res){
if(error){
console.error(error);
}else{
console.log('ok',res.filePath);
var MEsuccess = function(msg){
console.info(msg);
} ;
var MEerror = function(err){
console.error(err);
};
saveImageToPhone(res.filePath, MEsuccess, MEerror);
}
},'jpg',90);
}
function saveImageToPhone(url, success, error) {
var canvas, context, imageDataUrl, imageData;
var img = new Image();
img.onload = function() {
canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
context = canvas.getContext('2d');
context.drawImage(img, 0, 0);
try {
imageDataUrl = canvas.toDataURL('image/jpeg', 1.0);
imageData = imageDataUrl.replace(/data:image\/jpeg;base64,/, '');
cordova.exec(
success,
error,
'Canvas2ImagePlugin',
'saveImageDataToLibrary',
[imageData]
);
}
catch(e) {
error(e.message);
}
};
try {
img.src = url;
}
catch(e) {
error(e.message);
}
}
Now just call the first function from wherever you wish.
If it works, you'll get a console.log right after your filePath readout that says
IMAGE SAVED!
Be careful, you might overwrite the same screenshot if you use a name as a screenshot.save parameter (after your jpg and quality parameters). My app needs to save different screenshots and have them all available later; by removing the name parameter and allowing the OS to name the file I was able to achieve just that.
I hope that helps you out, I know it caused me a lot of trouble...
i am trying to accomplish a two way communication request response in my firefox sidebar extension, i have a file named event.js this resides on the content side, i have another file called sidebar.js file which is residing in the xul. I am able to communicate from event.js to sidebar.js file using the dispatchEvent method. my event in turn raises a XMLHttpRequest in sidebar.js file which hits the server and sends back the response. Now, here i am unable to pass the response to the event.js file. I want the response to be accessed in the event.js file. Till now i have achieved only one way communication. Please help me in getting the two way communication.
Code is as follows:
// event.js file
// This event occurs on blur of the text box where i need to save the text into the server
function saveEvent() {
var element = document.getElementById("fetchData");
element.setAttribute("urlPath", "http://localhost:8080/event?Id=12");
element.setAttribute("jsonObj", convertToList);
element.setAttribute("methodType", "POST");
document.documentElement.appendChild(element);
var evt = document.createEvent("Events");
evt.initEvent("saveEvent", true, true);
element.dispatchEvent(evt);
//Fetching the response over here by adding the listener
document.addEventListener("dispatchedResponse", function (e) { MyExtension.responseListener(e); }, false, true);
}
var MyExtension = {
responseListener: function (evt) {
receivedResponse(evt.target.getAttribute("responseObject"));
}
}
function receivedResponse(event) {
alert('response: ' + event);
}
// sidebar.js file
window.addEventListener("load", function (event) {
var saveAjaxRequest = function (urlPath, jsonObj, methodType, evtTarget) {
var url = urlPath;
var request = Components.classes["#mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(Components.interfaces.nsIXMLHttpRequest);
request.onload = function (aEvent) {
window.alert("Response Text: " + aEvent.target.responseText);
saveResponse = aEvent.target.responseText;
//here i am again trying to dispatch the response i got from the server back to the origin, but unable to pass it...
evtTarget.setAttribute("responseObject", saveResponse);
document.documentElement.appendChild(evtTarget);
var evt = document.createEvent("dispatchedRes"); // Error line "Operation is not supported" code: "9"
evt.initEvent("dispatchedResponse", true, false);
evtTarget.dispatchEvent(evt);
};
request.onerror = function (aEvent) {
window.alert("Error Status: " + aEvent.target.status);
};
//window.alert(methodType + " " + url);
request.open(methodType, url, true);
request.send(jsonObj);
};
this.onLoad = function () {
document.addEventListener("saveEvent", function (e) { MyExtension.saveListener(e); }, false, true);
}
var MyExtension =
{
saveListener: function (evt) {
saveAjaxRequest(evt.target.getAttribute("urlPath"), evt.target.getAttribute("jsonObj"), evt.target.getAttribute("methodType"), evt.originalTarget);
}
};
});
Why are you moving your fetchData element into the sidebar document? You should leave it where it is, otherwise your content code won't be able to receive the event. Also, use the content document to create the event. Finally, document.createEvent() parameter for custom events should be "Events". So the code after your //here i am again trying comment should look like:
evtTarget.setAttribute("responseObject", saveResponse);
var evt = evtTarget.ownerDocument.createEvent("Events");
evt.initEvent("dispatchedResponse", true, false);
evtTarget.dispatchEvent(evt);
Please note however that your code as you show it here is a huge security vulnerability - it allows any website to make any HTTP requests and get the result back, so it essentially disables same-origin policy. At the very least you need to check that the website talking to you is allowed to do it (e.g. it belongs to your server). But even then it stays a security risk because server response could be altered (e.g. by an attacker on a public WLAN) or your server could be hacked - and you would be giving an attacker access to sensitive data (for example he could trigger a request to mail.google.com and if the victim happens to be logged in he will be able to read all email data). So please make this less generic, only allow requests to some websites.