add footer and demo-block

examples/components/demo-block.vue

@@ -0,0 +1,165 @@
+<template>
+  <div
+    class="demo-block"
+    :class="[blockClass, { 'hover': hovering }]"
+    @mouseenter="hovering = true"
+    @mouseleave="hovering = false">
+    <slot></slot>
+    <div class="demo-block-control" @click="isExpanded = !isExpanded">
+      <i :class="iconClass"></i>
+      <span v-show="hovering">{{ controlText }}</span>
+    </div>
+  </div>
+</template>
+
+<style>
+  .demo-block {
+    border: solid 1px #eaeefb;
+    border-radius: 4px;
+    transition: .2s;
+  
+    &.hover {
+      box-shadow: 0 6px 18px 0 rgba(232, 237, 250, .5);
+    }
+  
+    .source {
+      padding: 24px;
+    }
+    
+    .meta {
+      background-color: #fbfcfd;
+      border-top: solid 1px #eaeefb;
+      clear: both;
+      overflow: hidden;
+      height: 0;
+      transition: height .2s;
+    }
+
+    .description {
+      padding: 18px 24px;
+      width: 40%;
+      box-sizing: border-box;
+      border-left: solid 1px #eaeefb;
+      float: right;
+      font-size: 14px;
+      line-height: 1.5;
+      color: #5e6d82;
+      
+      p {
+        margin: 0;
+      }
+      
+      code {
+        background-color: #f4faff;
+        border: solid 1px #eaeefb;
+        margin: 0 4px;
+        padding: 0 4px;
+        font-size: 12px;
+      }
+    }
+    
+    .highlight {
+      width: 60%;
+      border-right: solid 1px #eaeefb;
+
+      pre {
+        margin: 0;
+      }
+      
+      code.hljs {
+        padding: 18px 24px;
+        margin: 0;
+        line-height: 1.4;
+        background-color: #fbfcfd;
+        border: none;
+        max-height: none;
+        border-radius: 0;
+      
+        &::before {
+          content: none;
+        }
+      }
+    }
+  
+    .demo-block-control {
+      border-top: solid 1px #eaeefb;
+      height: 36px;
+      box-sizing: border-box;
+      background-color: #fff;
+      border-bottom-left-radius: 4px;
+      border-bottom-right-radius: 4px;
+      text-align: center;
+      margin-top: -1px;
+      color: #d3dce6;
+      cursor: pointer;
+      transition: .2s;
+
+      i {
+        font-size: 12px;
+        line-height: 36px;
+      }
+
+      span {
+        font-size: 14px;
+        line-height: 36px;
+      }
+      
+      &:hover {
+        color: #20a0ff;
+        background-color: rgba(32, 159, 255, .05);
+      }
+    }
+  }
+</style>
+
+<script type="text/babel">
+  export default {
+    data() {
+      return {
+        hovering: false,
+        isExpanded: false
+      };
+    },
+
+    computed: {
+      blockClass() {
+        return `demo-${ this.$router.currentRoute.path.split('/').pop() }`;
+      },
+
+      iconClass() {
+        return this.isExpanded ? 'el-icon-caret-top' : 'el-icon-caret-bottom';
+      },
+
+      controlText() {
+        return this.isExpanded ? '隐藏代码' : '显示代码';
+      },
+
+      codeArea() {
+        return this.$el.getElementsByClassName('meta')[0];
+      },
+
+      codeAreaHeight() {
+        if (this.$el.getElementsByClassName('description').length > 0) {
+          return Math.max(this.$el.getElementsByClassName('description')[0].clientHeight, this.$el.getElementsByClassName('highlight')[0].clientHeight);
+        }
+        return this.$el.getElementsByClassName('highlight')[0].clientHeight;
+      }
+    },
+
+    watch: {
+      isExpanded(val) {
+        this.codeArea.style.height = val ? `${ this.codeAreaHeight + 1 }px` : '0';
+      }
+    },
+
+    mounted() {
+      this.$nextTick(() => {
+        let highlight = this.$el.getElementsByClassName('highlight')[0];
+        if (this.$el.getElementsByClassName('description').length === 0) {
+          highlight.style.width = '100%';
+          highlight.borderRight = 'none';
+        }
+      });
+    }
+  };
+</script>