1 files changed, 137 insertions, 0 deletions
diff --git a/app/assets/javascripts/vue_shared/components/table_pagination.vue b/app/assets/javascripts/vue_shared/components/table_pagination.vue
new file mode 100644
index 00000000000..5e7df22dd83
--- /dev/null
+++ b/app/assets/javascripts/vue_shared/components/table_pagination.vue
@@ -0,0 +1,137 @@
+<script>
+const PAGINATION_UI_BUTTON_LIMIT = 4;
+const UI_LIMIT = 6;
+const SPREAD = '...';
+const PREV = 'Prev';
+const NEXT = 'Next';
+const FIRST = '« First';
+const LAST = 'Last »';
+
+export default {
+  props: {
+    /**
+      This function will take the information given by the pagination component
+
+      Here is an example `change` method:
+
+      change(pagenum) {
+        gl.utils.visitUrl(`?page=${pagenum}`);
+      },
+    */
+    change: {
+      type: Function,
+      required: true,
+    },
+
+    /**
+      pageInfo will come from the headers of the API call
+      in the `.then` clause of the VueResource API call
+      there should be a function that contructs the pageInfo for this component
+
+      This is an example:
+
+      const pageInfo = headers => ({
+        perPage: +headers['X-Per-Page'],
+        page: +headers['X-Page'],
+        total: +headers['X-Total'],
+        totalPages: +headers['X-Total-Pages'],
+        nextPage: +headers['X-Next-Page'],
+        previousPage: +headers['X-Prev-Page'],
+      });
+    */
+    pageInfo: {
+      type: Object,
+      required: true,
+    },
+  },
+  methods: {
+    changePage(e) {
+      const text = e.target.innerText;
+      const { totalPages, nextPage, previousPage } = this.pageInfo;
+
+      switch (text) {
+        case SPREAD:
+          break;
+        case LAST:
+          this.change(totalPages);
+          break;
+        case NEXT:
+          this.change(nextPage);
+          break;
+        case PREV:
+          this.change(previousPage);
+          break;
+        case FIRST:
+          this.change(1);
+          break;
+        default:
+          this.change(+text);
+          break;
+      }
+    },
+  },
+  computed: {
+    prev() {
+      return this.pageInfo.previousPage;
+    },
+    next() {
+      return this.pageInfo.nextPage;
+    },
+    getItems() {
+      const total = this.pageInfo.totalPages;
+      const page = this.pageInfo.page;
+      const items = [];
+
+      if (page > 1) items.push({ title: FIRST });
+
+      if (page > 1) {
+        items.push({ title: PREV, prev: true });
+      } else {
+        items.push({ title: PREV, disabled: true, prev: true });
+      }
+
+      if (page > UI_LIMIT) items.push({ title: SPREAD, separator: true });
+
+      const start = Math.max(page - PAGINATION_UI_BUTTON_LIMIT, 1);
+      const end = Math.min(page + PAGINATION_UI_BUTTON_LIMIT, total);
+
+      for (let i = start; i <= end; i += 1) {
+        const isActive = i === page;
+        items.push({ title: i, active: isActive, page: true });
+      }
+
+      if (total - page > PAGINATION_UI_BUTTON_LIMIT) {
+        items.push({ title: SPREAD, separator: true, page: true });
+      }
+
+      if (page === total) {
+        items.push({ title: NEXT, disabled: true, next: true });
+      } else if (total - page >= 1) {
+        items.push({ title: NEXT, next: true });
+      }
+
+      if (total - page >= 1) items.push({ title: LAST, last: true });
+
+      return items;
+    },
+  },
+};
+</script>
+<template>
+  <div class="gl-pagination">
+    <ul class="pagination clearfix">
+      <li
+        v-for="item in getItems"
+        :class="{
+          page: item.page,
+          prev: item.prev,
+          next: item.next,
+          separator: item.separator,
+          active: item.active,
+          disabled: item.disabled
+        }">
+        <a @click="changePage($event)">{{item.title}}</a>
+      </li>
+    </ul>
+  </div>
+</template>