I'm trying to get ag-grid's height to match the content.
I have several sets of data which I'm trying to load into different grids, each with the appropriate height for the data.
There is an AutoHeight option but the Angular version doesn't seem to work (I'm assuming this is for a previous version).
Here is my alternative attempt, which doesn't work:
<ng-container *ngFor="let reportItem of reportData">
<br />
<ag-grid-angular style="width: 100%; height: {{ 560 + (reportItem.data.length * 40) }}px;"
class="ag-theme-material bold-headers"
[rowData]="reportItem.data"
[columnDefs]="columnDefs">
</ag-grid-angular>
</ng-container>
Does anyone have a better suggestion?
Rather than just linking to the Auto-Grid Height method I described at the top - which I tried and failed with, could you please explain how I should implement it with my code above? (as I accept I may have missed something)
Thanks
There is the setGridAutoHeight method available on the api object. You need to get a reference to that object from the gridReady event and then you can call it, passing true to it. You have to take care with it if your data has many rows because using this method all the rows will be rendered to the DOM, normally only the visible ones are rendered.
gridApi.setGridAutoHeight(true)
It's at the bottom of the page: https://www.ag-grid.com/javascript-grid-api/
according to this link you can use domLayout='autoHeight' as a property to your grid.
it worked for me.
Related
I'm new to Angular and I just put in place an i18n (2 languages) system for a website I am creating. Everything works properly but in order to switch from one language to another in my header, I feel stuck.
I followed the Angular documentation to transfer my variables from child to parent component and I ended with this:
<input type="text" id="item-input" #lang>
<button type="button" (click)="changeChosenLang(lang.value)">
{{ 'global.lang' | translate }}
</button>
As you can see, I write my language in the input form and I send it to the proper component with a button. What I wanted was to click on my 'global.lang' text and to be able to send its value to the parent component, since the value is the language which is not actually used.
I don't know how to put my 'global.lang' text in a variable, neither what kind of balise I can use. Also I didn't know how to summarize my problem to search for it on StackOverflow so if you know a similar post, don't hesitate to post the link.
Thank you for your reading!
I found a less tortured way (poor brain) to have the result I wanted:
<span (click)="changeChosenLang()">
{{ 'global.lang' | translate }}
</span>
First I temporary changed my button to a span balise and I deleted the parameter from my changeChosenLang() function. Then, I transferred a variable 'lang' from my parent component to this one, witch contains the value of the language chosen in my app constructor. At each click, I change its value in my changeChosenLang() function and everything works great!
I hope it can help someone someday. The moral of this post is: the simpler, the better! Have a good day.
I am searching for the correct way to correct to scroll in a page that will load dynamic information. These informations are asynchronous so to avoid my user seeing the whole page constructing itself I have a boolean flag like so :
<div *ngIf="loaded"> ... </div>
My problem is that I want to scroll to an anchor using the angular router, but that anchor doesn't exist yet at this moment because the load isn't finished.
The anchor :
<hr id="my_anchor">
the code I use to load the page and get to that anchor :
<a [routerLink]="['/some/route/', idParameter]" fragment="my_anchor">...</a>
You probably want to use virtual scrolling, available through the Angular CDK:
https://material.angular.io/cdk/scrolling/examples
https://medium.com/codetobe/learn-how-to-us-virtual-scrolling-in-angular-7-51158dcacbd4
This approach dynamically loads only those components that are on screen, allowing you to load extremely large datasets.
It is also possible to code this manually using:
const el: any = document.elementFromPoint(x, y);
This Javascript function determines which HTMLElement is located at a specific x, y, coordinate and thereby determining which elements are on screen. Using this information you can wrap all items in a list like so:
<ng-container *ngFor="let data of datas">
<ng-container *ngIf="data.isOnScreen">
<app-my-component></app-my-component>
</ng-container>
<ng-container *ngIf="!data.isOnScreen">
<div class="empty-div"> </div>
</ng-container>
</ng-container>
and style the empty-div to be the same size as a non empty div. This ensures that scrolling works. I got this working well. However, no doubt the CDK makes this a whole world smoother and easier.
The only benefit with my custom approach is it gives you total control. You can easily use:
list.scrollTop = 999;
to scroll to any position in the list, thus supporting anchors (where list is the HTML list element that will scroll). Not for the feint hearted though, would only recommend this for confident coders.
I'm trying the following:
<div id='divOwner' runat=server visible='<%# isAccountOwner(Me.UserId) %>'>
I would expect this to switch visible / invisible based on the value of isAccountOwner. This is not working as expected, and is always coming up visible. Can somebody enlighten me please?
Thanks
#in code nuggets (<% %>) is used with data bound controls like gridview, repeater control etc. For your div to work like this you need to call the DataBind method of this Div or one of its paremt control.
So, In page load include this line:-
divOwner.DataBind();
And make sure isAccountOwner returns a Boolean.
I don't know what this is called, and I've messed around a lot with the headerTemplate but can't figure out how to produce this look. I need the second row of column names to 'act normally' in terms of sorting and filtering, but everything I try breaks that. I have no idea if headerTemplate is even the right way to do this? Is there a name for this kind of grouping? My research is turning up a whole lot of nothing, so I suspect I'm using the wrong keywords. What is this layout called?
Note: for security reasons I can't post a code dump (super nervous about the image too). If a specific thing is needed, please let me know and I'll try to anonymize it. But, mostly I'm just looking for suggestions to try other than playing with the headerTemplate.
This is now natively supported by the Kendo grid. Here's an example.
You won't be able to achieve multirow Group headers via Kendo grid on MVC, although there were discussion to add the feature in the current version(2014Q2) of Kendo. See below link for more reference:
Pivot Grid StackOverflow Reference
However, you can achieve the multirow header option via jquery on databound event of the grid. But it is a workaround rather than a perfect soultion.
Please see the js function for databound event to add multirow header:
function onDataBound(arg) {
var myElem = document.getElementById('trParentHeader'); //Check if Parent Header Group exist
if (myElem == null){ // if parent Header doesnot exist then add the Parent Header
$("#grid").find("th.k-header").parent().before("<tr id='trParentHeader'> <th colspan='2' class='k-header'><strong>Products + Unit Price</strong></th> <th scope='col' class='k-header'><strong>Single Units in Stock</strong></th></tr>");
}
}
For more understanding and a working example please see below Sample:
MultiRow-Column Header Sample
Please let me know if you if you have any queries.
I have an array of 2000 items, that I need to display in html - each of the items is placed into a div. Now each of the items can have 6 links to click on for further action. Here is how a single item currently looks:
<div class='b'>
<div class='r'>
<span id='l1' onclick='doSomething(itemId, linkId);'>1</span>
<span id='l2' onclick='doSomething(itemId, linkId);'>2</span>
<span id='l3' onclick='doSomething(itemId, linkId);'>3</span>
<span id='l4' onclick='doSomething(itemId, linkId);'>4</span>
<span id='l5' onclick='doSomething(itemId, linkId);'>5</span>
<span id='l6' onclick='doSomething(itemId, linkId);'>6</span>
</div>
<div class='c'>
some item text
</div>
</div>
Now the problem is with the performance. I am using innerHTML to set the items into a master div on the page. The more html my "single item" contains the longer the DOM takes to add it. I am now trying to reduce the HTML to make it small as possible. Is there a way to render the span's differently without me having to use a single span for each of them? Maybe using jQuery?
First thing you should be doing is attaching the onclick event to the DIV via jQuery or some other framework and let it bubble down so that you can use doSomething to cover all cases and depending on which element you clicked on, you could extract the item ID and link ID. Also do the spans really need IDs? I don't know based on your sample code. Also, maybe instead of loading the link and item IDs on page load, get them via AJAX on a as you need them basis.
My two cents while eating salad for lunch,
nickyt
Update off the top of my head for vikasde . Syntax of this might not be entirely correct. I'm on lunch break.
$(".b").bind( // the class of your div, use an ID , e.g. #someID if you have more than one element with class b
"click",
function(e) { // e is the event object
// do something with $(e.target), like check if it's one of your links and then do something with it.
}
);
If you set the InnerHtml property of a node, the DOM has to interpret your HTML text and convert it into nodes. Essentially, you're running a language interpreter here. More text, more processing time. I suspect (but am not sure) that it would be faster to create actual DOM element nodes, with all requisite nesting of contents, and hook those to the containing node. Your "InnerHTML" solution is doing the same thing under the covers but also the additional work of making sense of your text.
I also second the suggestion of someone else who said it might be more economical to build all this content on the server rather than in the client via JS.
Finally, I think you can eliminate much of the content of your spans. You don't need an ID, you don't need arguments in your onclick(). Call a JS function which will figure out which node it's called from, go up one node to find the containing div and perhaps loop down the contained nodes and/or look at the text to figure out which item within a div it should be responding to. You can make the onclick handler do a whole lot of work - this work only gets done once, at mouse click time, and will not be multiplied by 2000x something. It will not take a perceptible amount of user time.
John Resig wrote a blog on documentDragments http://ejohn.org/blog/dom-documentfragments/
My suggestion is to create a documentDragment for each row and append that to the DOM as you create it. A timeout wrapping each appendChild may help if there is any hanging from the browser
function addRow(row) {
var fragment = document.createDocumentFragment();
var div = document.createElement('div');
div.addAttribute('class', 'b');
fragment.appendChild(div);
div.innerHtml = "<div>what ever you want in each row</div>";
// setting a timeout of zero will allow the browser to intersperse the action of attaching to the dom with other things so that the delay isn't so noticable
window.setTimeout(function() {
document.body.appendChild(div);
}, 0);
};
hope that helps
One other problem is that there's too much stuff on the page for your browser to handle gracefully. I'm not sure if the page's design permits this, but how about putting those 2000 lines into a DIV with a fixed size and overflow: auto so the user gets a scrollable window in the page?
It's not what I'd prefer as a user, but if it fixes the cursor weirdness it might be an acceptable workaround.
Yet Another Solution
...to the "too much stuff on the page" problem:
(please let me know when you get sick and tired of these suggestions!)
If you have the option of using an embedded object, say a Java Applet (my personal preference but most people won't touch it) or JavaFX or Flash or Silverlight or...
then you could display all that funky data in that technology, embedded into your browser page. The contents of the page wouldn't be any of the browser's business and hence it wouldn't choke up on you.
Apart from the load time for Java or whatever, this could be transparent and invisible to the user, i.e. it's (almost) possible to do this so the text appears to be displayed on the page just as if it were directly in the HTML.