Sass多状态导航栏问题

时间:2012-11-03 17:09:08

标签: sass compass-sass

我有一个导航栏,其中按钮具有悬停状态,但也需要在其各自的页面上“活动”。由于此导航栏是包含的一部分,因此我决定通过body标签上的类来执行活动状态,如.dashboard .dashboard-button中所示。所以我有悬停和这个。

我试图用Sass / Compass找出最简化的方法。我创建了几个mixins:

@mixin nav-button-on($icon) {
    background-color: #2f3684; // Old browsers
    @include filter-gradient($offwhite, #E5E5E5, vertical); // IE6-9
    @include background-image(url('../images/'+$icon+'-on.png'),linear-gradient(top, $offwhite 0%, #E5E5E5 100%));
    border-bottom: $borderbottom solid #F31A35;
    a { color: $red;}
}
@mixin nav-button($icon){
    background-color: #fff; // Old browsers
    @include filter-gradient(#fff, #fff, vertical); // IE6-9
    @include background-image(url('../images/'+$icon+'.png'),linear-gradient(top, #fff 0%, #fff 100%));
}

然后在定义按钮的LI中,我有

 li {
 &.dashboard { 
            @include nav-button('dashboard'); 
        }
        .dashboard &.dashboard { 
            @include nav-button-on('dashboard'); 
            &:hover {
                 @include nav-button-on('dashboard'); 
            }
        }
}

HTML:

<body class="dashboard">
<div id="nav">
    <ul>
    <li class="first dashboard"><a href="/index.php">Dashboard</a></li>
    <li class="challenges"><a href="/challenges.php">Challenges &amp; Teams</a></li>
    <li class="goals"><a href="/goals.php">Goals</a></li>
    <li class="activity"><a href="/my-activity.php">My Activity</a></li>
    <li class="destinations"><a href="/destinations.php">Destinations</a></li>
    <li class="fitness last"><a href="/fitness-resources.php">Fitness Resources</a></li>
</ul>
</div>

这看起来有点令人费解,我想知道是否有人有任何建议来简化这一点。

注意:我必须添加白色到白色渐变,因为当悬停在纯色背景上时,渐变悬停状态会导致闪光。

2 个答案:

答案 0 :(得分:0)

这里有许多方面需要改进:

  1. 你真的在处理dashboard类的层次结构吗?例如,您目前正在编译为:

    li.dashboard {
        ...
    }
    li .dashboard li.dashboard {
        ...
    }
    

    这似乎是错误的,或者至少结构不合理。也许你可以在这里简化一些事情。

  2. 假设您需要为每个导航<li>元素添加此元素,请使用迭代混合来干掉它:

    li {
        @each $item in dashboard, challenges, goals, activity, destinations, fitness {
            &.#{$item} { 
                @include nav-button($item); 
            }
            .#{$item} &.#{$item} { 
                @include nav-button-on($item); 
                &:hover {
                    @include nav-button-on($item); 
                }
            }
        }
    }
    
  3. 但#2实际上并不是最好的方法。对于这种东西使用占位符而不是mixins,或者将两者结合起来。我会做这样的事情:

        %nav-button {
            background-color: #fff; // Old browsers
            @include filter-gradient(#fff, #fff, vertical); // IE6-9
        }
    
        %nav-button-on {
            background-color: #2f3684; // Old browsers
            @include filter-gradient($offwhite, #E5E5E5, vertical); // IE6-9
            border-bottom: $borderbottom solid #F31A35;
            a { color: $red;}
        }
    
        @mixin li-image($icon) {
            @include background-image(url('../images/'+$icon+'.png'),linear-gradient(top, #fff 0%, #fff 100%));
        }
    
        @mixin li-image-on($icon) {
            @include background-image(url('../images/'+$icon+'-on.png'),linear-gradient(top, $offwhite 0%, #E5E5E5 100%));
        }
    
        @each $item in dashboard, challenges, goals, activity, destinations, fitness {
            body.#{$item} li, li.#{$item}:hover {
                @extend %nav-button-on;
                @include li-image-on($item);
            }
            li.#{$item} {
                @extend %nav-button;
                @include li-image($item);
            }
        }
    
  4. 比较这些的输出和可维护性,我认为你会发现这更精简!

答案 1 :(得分:-1)

}

之后您的错误@include nav-button('dashboard');

试一试:

li {  
    &.dashboard {   
        @include nav-button('dashboard');  
        .dashboard &.dashboard {   
            @include nav-button-on('dashboard');     
            &:hover {  
                @include nav-button-on('dashboard');   
            }  
        }  
    }  
}