webui: reorganize the code

1 files changed, 135 insertions, 0 deletions

diff --git a/webui/src/list/List.js b/webui/src/list/List.js
new file mode 100644
index 00000000..880782c7
--- /dev/null
+++ b/webui/src/list/List.js
@@ -0,0 +1,135 @@
+import { withStyles } from '@material-ui/core/styles'
+import Table from '@material-ui/core/Table/Table'
+import TableBody from '@material-ui/core/TableBody/TableBody'
+import TablePagination from '@material-ui/core/TablePagination/TablePagination'
+import React from 'react'
+import BugRow from './BugRow'
+
+const styles = theme => ({
+  main: {
+    maxWidth: 600,
+    margin: 'auto',
+    marginTop: theme.spacing.unit * 4
+  }
+})
+
+class List extends React.Component {
+
+  props: {
+    bugs: Array,
+    fetchMore: (any) => any,
+    classes: any,
+  }
+
+  state = {
+    page: 0,
+    rowsPerPage: 10,
+    lastQuery: {}
+  }
+
+  handleChangePage = (event, page) => {
+    const {bugs, fetchMore} = this.props
+    const {rowsPerPage} = this.state
+    const pageInfo = bugs.pageInfo
+
+    if (page === this.state.page + 1) {
+      if (!pageInfo.hasNextPage) {
+        return
+      }
+
+      const variables = {
+        after: pageInfo.endCursor,
+        first: rowsPerPage
+      }
+
+      fetchMore({
+        variables,
+        updateQuery: this.updateQuery,
+      })
+
+      this.setState({page, lastQuery: variables})
+      return
+    }
+
+    if (page === this.state.page - 1) {
+      if (!pageInfo.hasPreviousPage) {
+        return
+      }
+
+      const variables = {
+        before: pageInfo.startCursor,
+        last: rowsPerPage
+      }
+
+      fetchMore({
+        variables,
+        updateQuery: this.updateQuery,
+      })
+
+      this.setState({page, lastQuery: variables})
+      return
+    }
+
+    throw new Error('non neighbour page pagination is not supported')
+  }
+
+  handleChangeRowsPerPage = event => {
+    const {fetchMore} = this.props
+    const {lastQuery} = this.state
+    const rowsPerPage = event.target.value
+
+    const variables = lastQuery
+
+    if (lastQuery.first) {
+      variables.first = rowsPerPage
+    } else if (lastQuery.last) {
+      variables.last = rowsPerPage
+    } else {
+      variables.first = rowsPerPage
+    }
+
+    fetchMore({
+      variables,
+      updateQuery: this.updateQuery,
+    })
+
+    this.setState({rowsPerPage, lastQuery: variables})
+  }
+
+  updateQuery = (previousResult, {fetchMoreResult}) => {
+    return fetchMoreResult ? fetchMoreResult : previousResult
+  }
+
+  render() {
+    const {classes, bugs} = this.props
+    const {page, rowsPerPage} = this.state
+
+    return (
+      <main className={classes.main}>
+        <Table className={classes.table}>
+          <TableBody>
+            {bugs.edges.map(({cursor, node}) => (
+              <BugRow bug={node} key={cursor}/>
+            ))}
+          </TableBody>
+        </Table>
+        <TablePagination
+          component="div"
+          count={bugs.totalCount}
+          rowsPerPage={rowsPerPage}
+          page={page}
+          backIconButtonProps={{
+            'aria-label': 'Previous Page'
+          }}
+          nextIconButtonProps={{
+            'aria-label': 'Next Page'
+          }}
+          onChangePage={this.handleChangePage}
+          onChangeRowsPerPage={this.handleChangeRowsPerPage}
+        />
+      </main>
+    )
+  }
+}
+
+export default withStyles(styles)(List)