[border_css_util] implement css helper class

[scherler]

This PR will provide CSS helper classes to add borders. It is similar to https://weekly.ci.jenkins.io/design-library/Spacing/ but takes more the way https://tailwindcss.com/docs/border-width works e.g. jenkins-border-t-3 will create a top border of 3 px

follow up pr will be created for https://weekly.ci.jenkins.io/design-library

Testing done

After compile you can change the source code to

    <div class="jenkins-border-t-4">
      Hello border
    </div>
    <div class="jenkins-border-dashed jenkins-border-b jenkins-border-t jenkins-border-blue">
      Hello border
    </div>
    <div class="jenkins-border jenkins-border-green">
      Hello border
    </div>

Proposed changelog entries

CSS helper classes to add borders in the spirit of the jenkins-!-spacing

Proposed upgrade guidelines

N/A

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@mention

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[janfaracik]

Hey, thanks!

Is there a specific use case for these utils? Curious, wondering if it should be like the colours where we have a base palette but then a semantic set on top of them with specific meaning.

[scherler]

Mainly I was looking into this because of yui-button has borders but jenkins-button does not, some of our designs need those borders. Regarding the semantics I can implement that

[janfaracik]

Mainly I was looking into this because of yui-button has borders but jenkins-button does not, some of our designs need those borders. Regarding the semantics I can implement that

Ah gotcha. Is there any chance you could share a pic of what those buttons look like? Might be worth making a new type of button rather than a util library if its limited to that.

[scherler]

this image shows a typical use case.

[scherler]

... to be honest (but that is me loving CSS util classes) I think the border helper is much more versatile and it is in the spirit of the spacing util classes

[scherler]

I have created a PoC

• Analyze now = .jenkins-button--primary-inverted
• Turn off = .jenkins-button--danger
• Download = .jenkins-button--success

.jenkins-button--primary-inverted {
  color: var(--btn-secondary-color) !important;
  border: 2px solid var(--btn-secondary-border);
  border-radius: 4px;
  font-weight: bold;
  font-size: var(--font-size-xs);
  &::before {
      background: transparent !important;
    }
    
    &:not(:disabled) {
        &:hover {
            border: 2px solid var(--accent-color) !important;
            color: var(--accent-color) !important;
    }

    &:active,
    &:focus-visible {
      &::before {
        opacity: 0.8;
      }

      &::after {
        box-shadow: 0 0 0 0.33rem var(--accent-color);
        opacity: 0.2;
      }
    }
  }
}

.jenkins-button--danger {
  color: var(--white) !important;
  background-color: var(--destructive-color);
  border-color: var(--destructive-color);
  font-weight: bold;
  font-size: var(--font-size-xs);
  
  &:not(:disabled) {
    &:hover,
    &:focus {
        color: var(--white);
        background-color: var(--danger-hover);
        border-color: var(--danger-hover);
    }
  }
  
  &:focus {
    box-shadow: 0 0 0 0.2rem var(--danger-active);
  }
  
  &:active {
    color: var(--white);
    background-color: var(--danger-active);
    border-color: var(--danger-active);
  }
}

.jenkins-button--success {
  color: var(--white) !important;
  background-color: var(--success-color);
  border-color: var(--success-color);
  font-weight: bold;
  font-size: var(--font-size-xs);
  
  &:not(:disabled) {
    &:hover,
    &:focus {
        color: var(--white);
        background-color: var(--light-green);
        border-color: var(--light-green);
    }
  }
  
  &:focus {
    box-shadow: 0 0 0 0.2rem var(--light-green);
  }
  
  &:active {
    color: var(--white);
    background-color: var(--light-green);
    border-color: var(--light-green);
  }
}

[scherler]

created an alternative PR #10061