I am trying to display a list of persons in Vaadin 8 grid, including their photos (JPEGs in byte[]).
However, in the component column (see the code below) only the top of the picture is visible.
personsGrid.addComponentColumn(v -> {
if (v.getPhoto() != null) {
Image personsPhoto = new Image();
displayImage(personsPhoto, v.getPhoto());
return personsPhoto;
}
return new Image("", new ThemeResource("img/no-picture.jpg"));
});
Is there a way to show full-size picture in a grid?
How generally make grid rows adjust their heights depending on the content height?
As mentioned in the comment under the question, this cannot be achieved dynamically but you can explicitly set the height of the Grid Row using CSS.
Something along the lines of this should give you a steer in the right direction:
Java:
final Grid<SomeBean> grid = new Grid<>();
grid.addStyleName("custom-grid-style");
CSS:
.custom-grid-style .v-grid-body .v-grid-row .v-grid-cell {
min-height: 50px;
line-height: 50px;
}
And if you're unsure on where to make the CSS change, you need to add the #StyleSheet annotation on either the class you're editing or on the UI. And then the .css file must be in the same package location in your resources folder.
For example:
The class is in the package: com.example.components
Then your CSS file would be in: src/main/resources/com/example/components
Related
I have two components that using mat menu. I just want to add some extra styling for one mat menu in one component. I have used this css inside the component css
::ng-deep.mat-menu-panel
{
position: fixed !important;
right : 2%;
}
Now the issue is the css is applying to the other component mat menu also.
How can i resolve this?
Add your panel styling to your global style sheet:
.fixed-menu-panel
{
position: fixed !important;
right : 2%;
}
Add the panel style to the mat-menu:
<mat-menu class="fixed-menu-panel">
StackBlitz: https://stackblitz.com/edit/angular-9bheaf?file=index.html
The challenge is that the menu is rendered in an overlay container attached to the parent document and not the button itself... with this in mind, you will need to think about how to grab a reference to that mat-menu-panel and append a class to it to make it unique on menu open.
For example, you could do something like the following to accomplish this.
Create a component method that will receive the templateRef as an argument. It will get the mat-menu-panel using Renderer2 and append a class to it of styled
styleMenu(el) {
const menuPanel = this.ren.parentNode(this.ren.parentNode(el.items.first['_elementRef'].nativeElement));
this.ren.addClass(menuPanel, 'styled')
}
Then in your view, use the (menuOpened) event emitter to call the styleMenu method when the menu opens, and pass the #styledMenu templateRef as an argument.
<button mat-button [matMenuTriggerFor]="styledMenu" (menuOpened)="styleMenu(styledMenu)">styled</button>
<mat-menu #styledMenu="matMenu">
Then your CSS will look like this
::ng-deep .mat-menu-panel.styled
{
position: fixed !important;
right : 2%;
}
This is one approach, you could also roll all of this into a directive and then just apply the directive selector where you need it.
Stackblitz
https://stackblitz.com/edit/angular-5nixtl?embed=1&file=app/menu-overview-example.ts
I'm trying to disable the checkbox on a specific row based on some property of it's Bean (or just make the whole row generally unselectable), but I can't really see any method or property I could use to get a handle of the checkboxes on the left hand side added when using a multi-selection model or something as broad as disabling the whole row. Any thoughts on how this could be achieved, or where I should be looking?
You can use CSS to hide uncheckable rows. First set their styles using setRowStyleGenerator:
grid.setRowStyleGenerator(row -> {
boolean uncheckable = (Boolean)
row.getItem().getItemProperty("uncheckable").getValue();
return uncheckable ? "uncheckable-row" : "";
});
Then change styles in your .scss, they should look something like:
.v-grid-row.uncheckable-row td {
background: #b1b9d6 none repeat scroll 0 0;
}
.v-grid-row.uncheckable-row td:first-child {
visibility: hidden;
}
.v-grid-row.uncheckable-row.v-grid-row-selected > .v-grid-cell {
background-image: none;
border-color: #d4d4d4;
color: inherit;
text-shadow: inherit;
}
Here I hide the whole cell with checkbox (if hiding the content of td itself, user will still be available to select the row), use a different color for these rows and prevent them from being highlighted when "select all" checkbox is active. Surely, further styling is available. Since we only hide them from user, they still can be selected with grid.select() and located in grid.getSelectedRows() collection, you should filter them manually (by using some "uncheckable" property, as shown above).
It is not possible to disable checkbox on a specific row.
One solution is to use generated column and/or custom renderer.
if you are using twitter bootstrap as your responsive framework, you should be able to find that row and give it a class of ".inactive", and if that doesn't work you can always rig it but placing and absolute positioned box with a height and width of 100% inside of that row and z-index it to at least 250. That should make everything in that row un-clickable!
I have this piece of code
private VaadinLabel email,
this.email = new VaadinLabel();
this.informativoDab = new VaadinLabel();
HorizontalLayout row = new HorizontalLayout();
row.setWidth("100%");
row.addComponent(this.email);
row.addComponent(this.informativoDab);
And it gives me this:
When I actually want this:
It should be simple to do, but I've tried doing
this.email.setWidth("50%");
and it didn't work.
How can I do this with Vaadin Label, since I also need a hint to show the entire e-mail?
You should actually use "100%" as the label size as it should take all the space the layout gives for it, half in this case.
By default Vaadin will then wrapt the text on multiple lines. IIRC there isn't a built in css style name to do it, so you'll need to use CSS to disable wrapping and use the ellipsis to visualise overflown text. You could e.g. use "cut_text" style name (email.addStyleName("cut_text")) for your email label along with following css rules to your theme:
.cut_text {
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
}
as #mstahv mentioned, add a style name to your label
email.addStyleName("cut_text");
and use that css he wrote
.cut_text {
white-space: nowrap;
text-overflow: ellipsis;
}
as for the whole email to be displayed, I would suggest adding a description. Then when user hovers the hidden email it will popup in a small tooltip.
email.setDescription("very_long#email.com");
I tried to get a cell to expand it's height dynamically.
Is there a way to adjust the height of a row(GridRow) after it is rendered?
If not, then I will try to use an expandable grid or tree in a grid.
Is it possible to display an expandable grid off a specific cell/column?
Currently I see all expandable grids/tree grids that take up the entire row below the parent.
Thanks
Add this css to your styles:
.ui-grid-viewport .ui-grid-cell-contents {
word-wrap: break-word;
white-space: normal !important;
}
.ui-grid-row, .ui-grid-cell {
height: auto !important;
}
.ui-grid-row div[role=row] {
display: flex ;
align-content: stretch;
}
You can see an answer to the same question here: https://github.com/angular-ui/ng-grid/issues/3239#issuecomment-91045267
UI-Grid virtualizes the rows, meaning that it only renders a small subset of the data, and leaves everything that wouldn't be in view unrendered. This means the grid needs to know how tall every row is, so that it can calculate positioning.
If it had to measure every row when rendered this would cause the browser to repaint over and over and performance would be miserable.
You'll find that other virtualized tools (like Ionic's collection-repeat) have the same limitation.
Update:
To answer your second question: you can set a height property on the GridRow object (not your entity, you can use getRow from the grid API to get the GridRow object) and the grid will use this height when rendering the row.
And your third question: no, expandable is only built to work off entire rows. It might be possible to alter what sort of data is displayed in a sub-grid based on clicks in certain cells, but that would require some changes to the expandable code.
I need to make a dropdown navigation, where for every parent navigation item, in the dropdown area I show the child pages + 3 images with a title linked to other pages.
I would need something like the 'Custom Navigation' module with an option to select images (or add a custom class, and get the image from the page).
Is there an extension which I could use for this? If not, would be easier/faster to change/extend a core module, or should I create a new one?
Thanks!
EXAMPLE ('Kollektion' menu-item hovered. The gray area is the submenu container)
I don't know of an extension that would allow including an image to a specific link in a navigation menu. But if you are willing to do it with CSS styles, here's how I would do it:
Any page can have multiple custom CSS classes and they do apply to the navigation (unless the navigation template has been changed in such a way that they don't anymore). The place where you enter these CSS classes is at the bottom of the Edit page view, under expert settings. Add any CSS classes you want and then edit the style sheet to make them look right.
If the three pages are not supposed to be subpages for the current page, but lead somewhere else, you can use the "Internal redirect" page type for them.
The CSS could be something like this in addition to your regular styling:
.level_2 li {
float: left;
clear: left; /* this is to stack them on top of one another*/
}
.level_2 li.special_class {
display: inline-block;
vertical-align: top;
}
.level_2 li.special_class:before {
display: block;
content: '';
width: /* the intended image width */
height: /* the intended image height */
}
.level_2 li.special_class.foo {
background-image: url('foo');
}
.level_2 li.special_class.bar {
background-image: url('bar');
}
...
Please remember that this isn't supposed to be a complete solution, but rather a principle upon which you can build your own. You may want to add backwards compatibility to older browsers (or not), etc.
I think there is an extension to allow you do that. check this link Navigation with images
and may be this one also Navigations-Bild
Either of this should give you what you want but with a little styling