I am new to GWT and was learning it through some examples running in Eclipse. In one of those programs for a button I added setStyleName(class) (also checked with setStylePrimaryName()) and added one more style to that using addStyleName(class).
What I expected was that the button should display the css class properties setted using setStyleName()/setStylePrimaryname as this will be the primaryStylename.
But to my surprise if I add another style to button using addStyleName(), that style is getting as the button's style eventhough it is its secondaryStyleName! In such a case inorder to express the primary styleName, I had to add the secondary style Name using addStyleDependentName().
My code sets styles as follows.
final Button sendButton=new Button("Send");
final TextBox nameField=new TextBox();
sendButton.setStylePrimaryName("newButton");
sendButton.addStyleName("secondButton");
And in the css file
.newButton{
display:block;
font-size: 16pt;
color: black;
background-color: maroon;
}
.secondButton{
color:blue;
margin: 15px 10px 10px;
background-color: olive;
}
The button is always coming in olive background color except in cases where its adding as addStyleDependentName("secondButton") and
case 2: while using addStyleName("secondButton") and then setStyleName("newButton") (As setStyleName() will remove the existing secondary styles). I had also checked the values of primary style name and others using getStylePrimaryName() and getStyleName().
getStylePrimaryName() gives "newButton" and getStyleName() gives newButton,secondButton....So even having a primary style name why its always showing its secondary style property(here secondButton) added through addStyleName()?
*Please note: I have tried this on a text box as follows and its expressing the color mentioned under primary style as expected*
final TextBox nameField=new TextBox();
nameField.setText("---Enter Name Here---");
nameField.setStylePrimaryName("textStyle");
nameField.addStyleName("myText");
nameField.addStyleName("bigText");
and the CSS is as follows
.myText{
color:blue;
}
.bigText{
font-size: large;
}
.textStyle{
color:maroon;
text-shadow: aqua;
}
A thing noticed was that unless we are not adding the secondary styles as addStyleDependentName(), the properties are displaying in the order in which class names occur in CSS...That is, if the primary style name definition comes after secondary ones, primary gets displayed, else the secondary ones...The difference can be noted changing the order in which classes are defined in CSS
So in my button properties, when i changed the order to
.secondButton{
color:blue;
margin: 15px 10px 10px;
background-color: olive;
}
.newButton{
display:block;
font-size: 16pt;
color: black;
background-color: maroon;
}
the button color is getting as maroon. If the secondary styles are added as addStyleDependentName(), the primary style is expressed irrespective of the order in CSS
As per Docs :
Adds a secondary or dependent style name to this object.
After you set the setStyleName() or setStylePrimaryName() the addStyleName() will add another style,which you passed through the argument
The style primary name is the one style dependent names add a suffix to. Otherwise it's just a style name, and the CSS rules apply (GWT can't do anything around that, it's just HTML+CSS+JS in the end in the browser)
Related
I have created a simple grid with one column:
public MyGrid() {
addComponentColumn(this::getIcon).setClassNameGenerator(i -> "icon-img");
setItems(/** some items */);
setClassName("sidebar-grid");
}
And I have a css theme called mangaTheme. I use it like this #Theme("mangaTheme"). In the mangaTheme folder I have styles.css file with the following content:
.icon-img {
padding: 0;
}
.sidebar-grid {
width: 102px;
margin: auto;
margin-left: -30%;
}
The sidebar-grid css properties are applied properly as the grid is moved, but the icon-img properties are not applied whatsoever:
The classnames are applied:
What am I doing wrong or missing? I have also read this guide: https://cookbook.vaadin.com/dynamic-grid-cell-styling
EDIT: After configuring my workspace as was mentioned in the answer this is the resulting structure, but it still does not seem to function properly.
What you're missing is that the cell <td> element is inside the shadow DOM of the vaadin-grid component, and thus cannot be styled with global CSS. To style parts of components that are inside the component's shadow DOM, you need to inject the CSS into the component.
In the Cookbook example, this is done through the themeFor parameter in the annotation that loads the stylesheet:
#CssImport(themeFor = "vaadin-grid", value = "./recipe/dynamicgridcellstyling/dynamic-grid-cell-styling.css")
In your theme folder, however, you can do the same thing by putting that CSS in a stylesheet called vaadin-grid.css in the components subfolder, i.e.:
themes/mangaTheme/components/vaadin-grid.css
Another thing you're missing is that the classname is applied to the <td> cell, but the padding is on the vaadin-grid-cell-content element slotted into the cell, not the cell itself, so you need to rewrite your selector:
.icon-img ::slotted(vaadin-grid-cell-content) {
padding: 0;
}
(The sidebar-grid CSS class works fine as-is because it's applied to the vaadin-grid root element, which is in the page's regular DOM.)
I have a GWT application with some SimplePanel.
How can I make its border dashed?
I tried myPanel.addStyleName(Style.BorderStyle.DOTTED.getCssName());, but it didn't work.
This should work using Element#getStyle() method to update the element's Style object.
SimplePanel myPanel=new SimplePanel();
myPanel.getElement().getStyle().setBorderStyle(BorderStyle.DOTTED);
but I suggest you to keep the styling in the CSS file instead of directly applying it in Java file that is more difficult to manage and change in future mostly in case of themes.
CSS:
.dashedBorder{
border: 1px dotted black;
}
JAVA:
SimplePanel myPanel=new SimplePanel();
myPanel.setStyleName("dashedBorder");
I'm styling my GWT CellTable cells by overriding getCellStyleNames in my column definition. Styles are working, on the most part. I'm trying to color the background of a 4-pixel wide column, with mixed display results depending on the browser engine. I'm expecting the following to work, but it doesn't. I need to set the height for firefox to 0, otherwise the first row appears to have a larger height than the rest of the rows. Any ideas?
.wt-tableRowGreen {
background-color: #8DAF00;
width: 0px;
padding-left: 4px !important;
padding-right: 0px !important;
display: compact;
height: 100%;
}
Setting height to 0 works fine for FF, but breaks the others. Using browser specific selectors isn't working:
-ms-height: 100%;
-webkit-height: 100%;
-moz-height: 0;
If you want to target spesific css for Firefox, this is the solution I use:
#-moz-document url-prefix()
{
/* Css for FF here */
}
Obviously, this is something one should generally avoid, but in some cases it's virtually impossible to get around it.
I have a <p:menubar> in a xhtml template. The div that surrounds it has these CSS properties:
position: fixed;
top: 44px;
width: 100%;
So I can fix the menu header while user scrolls down the page.
The problem now is that some Prime Faces component have icons and headers overflowing the menu.
I tried to work with z-index but no success. I imagine that there is another solution in PrimeFaces instead of z-index.
Thanks a lot.
According to the PrimeFaces default style sheet primefaces.css, the <p:message(s)> icon is relatively positioned.
.ui-messages-info-icon, .ui-messages-warn-icon, .ui-messages-error-icon, .ui-messages-fatal-icon, .ui-message-info-icon, .ui-message-warn-icon, .ui-message-error-icon, .ui-message-fatal-icon {
background: url("/omnifaces/javax.faces.resource/messages/messages.png.xhtml?ln=primefaces") no-repeat;
display: block;
float: left;
margin: 0;
padding: 0;
position: relative;
}
I'm in first place not sure why it's relatively positioned as it doesn't seem to need to be offsetted nor have any absolutely positioned children. Perhaps it's been used as some (most likely IE-specific) workaround/hack for something else (if this was "has layout" related, the developer would better have used overflow: hidden instead for this). So just making it the default position: static should fix it.
Add the following to your override stylesheet to achieve this:
.ui-messages-info-icon, .ui-messages-warn-icon, .ui-messages-error-icon, .ui-messages-fatal-icon, .ui-message-info-icon, .ui-message-warn-icon, .ui-message-error-icon, .ui-message-fatal-icon {
position: static;
}
Alternatively, you could of course also set z-index of the menu with an insane high value, as you figured out yourself. I wouldn't consider this a reliable solution though, this is too much a workaround/hack.
Resolved it by setting the z-index: 9999999 to the <p:outputPanel> sorrounding the menu instead of setting the style property in the menu.
Can we get the value from inside a css definition in the code if CSS resource is used?
e.g.
.iv_menu_thumbnail {
display: block;
width: 24px;
height: 24px;
margin: 3px;
float: left;
cursor: pointer;
}`
Can we know via code the value of width and i want to access from one of my java class?
Thanks in advance
var width = $('.iv_menu_thumbnail').width();
console.log(width);
This will get the width of the element if this is what youre asking for.
As far as I'm concerned you cannot get non numerical values from a css declaration.
But you can set your own values via jQuery using the
.css()
So it would look like this if you want to set a new css value. (or overwrite it)
$(someelement).css('float', 'left');
As far as I know, you can only inspect the computed CSS property on an element where this has been applied. Like:
$(someElementOrId).css('width');
or
$(someElementOrId).width();
Note that the former and the latter differ - the former does not contain the unit of measure, the latter does.
You can have a variables in your Css Resource file and set the width attribute with that variable, and then access the width varialbe from code.
CssResource
Css Resource file
#def small 1px;
#def black #000;
border: small solid black;
Java Code
interface MyResources extends CssResource {
int small();
}