I set the title of my window upon creation and update it as needed depending on the user actions.
However, when using the history navigation function goBack and goForward (via react-router-dom useNavigate) the window's title is updated automatically and takes the value of the title defined in the HTML file loaded by the window. Since I don't have any title defined in my HTML file, it just makes the title disappear.
const appWindow = new BrowserWindow({
title: app.name,
webPreferences: {
nodeIntegration: false,
contextIsolation: true,
enableRemoteModule: false,
preload: path.join(__dirname, "../preloads/app.js")
}
});
appWindow.loadURL(getWindowUrl("index"));
Is there a way to disable this behaviour so the title doesn't update?
I'm using electron version 17.1.0 and react-router-dom 6.2.1.
Electron's BrowserWindow class has the "page-title-updated" event which has the capability to cancel the update of the native window's title. For example,
window.on ("page-title-updated", (event, title, explicitSet) => {
e.preventDefault ();
});
This will cancel any window title update which originated from within the window's document. Note that you could check for a specific title using the title parameter, so as to disallow only some window titles.
As per the documentation linked above, in case the title was created by making the document's URL the window title, explicitSet will be false.
Note that this will not trigger when you set the window title using Electron's API.
Related
So here is the explanation of the problem I am facing. It might look very similar other already asked questions, but none of them answered my problem.
I want to open an angular template reference in a new browser window (with all the styles) and use that window to print the contents using system print dialog.
By template reference I mean a whole component or may be just a fraction of template of given component.
Please note that I do not want to do it by below methods:
Opening a new route in a new browser window. (Why? this will cause all other things like common toolbar or help open up with the component. Also a new route will be required which is undesired.)
Opening the content in a closable modal.
Ok, This is how I did it using ComponentFactoryResolver and Injector. Just inject these two dependencies in your component which wants to open other component (ReportComponent in this case) in new browser window.
The constructor looks something like this in snippet below.
constructor(
private resolver: ComponentFactoryResolver,
private injector: Injector
) {}
.
.
.
This method opens up the component in new browser window.
public openPrintableReport(): void {
// resolve and instantiate the component which you want to open in new window.
const componentFactory = this.resolver.resolveComponentFactory(ReportComponent);
let component = componentFactory.create(this.injector);
component.changeDetectorRef.detectChanges();
// define external window
this.externalWindow = window.open('', '', 'width=1000,height=1000,left=150,top=200');
// copy all the styles to external window.
document.querySelectorAll('style').forEach(htmlElement => {
this.externalWindow.document.head.appendChild(htmlElement.cloneNode(true));
});
this.externalWindow.document.title = 'Printer Friendly Report';
// attach the component to external window
this.externalWindow.document.body.appendChild(component.location.nativeElement);
}
After creating a new page using browser.newPage() I load a file with page.evaluateOnNewDocument() that consists of dynamically created settings for navigator (like a custom userAgent, language and webdriver's values), later with page.click() I click an element on that page, that has the target attribute set to "_blank", so it opens a new tab.
The question is, how can I transfer navigator's changes implemented to the page with clickable element, to the tab created with the click action? -> currently, once the element is clicked and a new tab is created it does not have navigator's changes implemented to the parent page.
<< EDIT>>
I have tested out the below and to my surprise it works for some cases, I assume it is due to some racing conditions. Perhaps somebody could put more light on it.
browser.on('targetcreated', async target => {
if (target.type() === "page") {
const page = await target.page();
await page.evaluateOnNewDocument(preloadFile);
await page.setUserAgent(data.userAgent);
await page.setViewport({
width: data.viewportWidth,
height: data.viewportHeight
});
}
});
You have two options. Either use page.on('popup', ...):
page.on('popup', async(page) => {
await page.evaluateOnNewDocument(...);
})
or remove the target="_blank" from the anchor tag before clicking to force opening in the same tab.
Using Polymer Starter Kit as an example, I would like to have different <app-toolbar> in <my-app> (using property headerType) based on different <my-view#>, i.e.
<my-view1> => headerType = 'my-view1-header'
<my-view2> => headerType = 'my-view2-header'
In my <my-app>, I have created a property headerType and use <dom-if> to show/hide different <app-toolbar>.
My question is how would I always fire an event to <my-app> and set headerType = my-view#-header whenever <my-view#> is active (i.e. comes into view).
I have tried the polymer lifecycle, such as ready(), attached(), etc, and I understand they are only trigger during dom-related events.
I eventually use the _pageChanged observer to call a function on <my-view#>. Below are the snippet of the code.
_pageChanged: function(page) {
let onLoad = function () {
let selected = this.$.ironpages.children[page];
if (Object.getPrototypeOf(selected).hasOwnProperty('viewSelected')) {
selected.viewSelected();
}
}
// Load page import on demand. Show 404 page if fails
var resolvedPageUrl = this.resolveUrl('my-' + page + '.html');
this.importHref(resolvedPageUrl, onLoad, this._showPage404, true);
},
There is some example in Polymer shop template where you can execute something when the visibility of your view change with iron-pages.
you just need to add a property for example visible in each of your view element with Boolean type and observe that property to check whatever the view is visible or not, and then in your iron-pages you need to add selected-attribute property and the value is visible. check Polymer Shop Template.
I'm working on a site with a scrollable list of canvases for plotting data, and I need to resize the canvases whenever the width of the div they're in changes.
I have it working in most cases, but if I delete a plot such that the scroll bar goes away, it doesn't work. I tried the following, where plotsScroller is the div with the scroll bar and plotsList is what's inside of it:
$scope.isScrollingPlotsList = function() {
return plotsList.offsetHeight > plotsScroller.offsetHeight;
}
$scope.$watch('isScrollingPlotsList()', $scope.$apply);
This code would work except that no $digest happens after the reflow that removes the scroll bar; $digest is called when I delete a plot but I guess the reflow happens later.
Does anyone know how I can detect the reflow without using $timeout?
You can use Mutation Observers to detect changes in the DOM. When a change occur you will be notified and can traverse to see what changed.
An example of usage (source):
// select the target node
var target = document.querySelector('#some-id');
// create an observer instance
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
console.log(mutation.type);
});
});
// configuration of the observer:
var config = { attributes: true, childList: true, characterData: true };
// pass in the target node, as well as the observer options
observer.observe(target, config);
// later, you can stop observing
observer.disconnect();
Also see the source link for details.
It should be supported in all major browsers incl. IE11. For [IE9, IE11> there exists a polyfill that can be used.
The specification
I know there are more efficient ways at doing this but I have my reasons for doing it this way. I have a modal popup window. I would like for this window to pop up as soon as the visitor loads the page. As of right now the window is reached and opened by clicking a link that takes them to index.php#login_form.
"#login_form" being what I would like to add the URL on page load. Then they can chose to exit it once it has initially loaded with the popup.
Now is there a way to do this more efficiently with out having to change my css or code very much?
Thanks!
The hash in url can be accessed through window.location.hash in javascript. You can judge this in body onload event.
To answer your question I have created a fiddle, that takes your example and solves what you are looking for. http://jsfiddle.net/sgaurav/xA4vG/
Basically what this code is doing is, selects the id of click you want to simulate and then creates a mouse event for click as per answer given here How do I simulate user clicking a link in JQuery?
$.fn.simulateClick = function() {
return this.each(function() {
if('createEvent' in document) {
var doc = this.ownerDocument,
evt = doc.createEvent('MouseEvents');
evt.initMouseEvent('click', true, true, doc.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
this.dispatchEvent(evt);
} else {
this.click(); // IE
}
});
}
Now this code is used onload event of body to fake a click on the link that you are doing manually till now using
jQuery(document).load(
jQuery('#join_pop').simulateClick()
);
This in turn loads popup as soon as page opens up. You can change id in last code to the login form if you want and that will start showing up on page load instead of sign up.
One easy way is to load the page directly with the hashtag login_form:
http://www.script-tutorials.com/demos/222/index.html#login_form
Or if you want to be more "precise" you can use jquery like this:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<body>
<!--Place this at the end of the body tag.-->
<script>
$(function(){
window.location.hash = "login_form"; //this will add with js the #login_form hash at the end of th url
})
</script>
You can use jquery to show the modal when the window is loaded:
Try this code and you'll understand:
$(function(){
alert("Done loading");
})
You'll add the code to show the modal instead of the alert function. If the modal is shown or hidden with css, you can easily add a css class to an element with:
$(".element").addClass("showModal);
Or remove a class with:
$(".element").removeClass("hideModal");
Be sure to have the jquery library imported. I hope this answers your question.