merge: Add PatternFly 4 web interface (#161)

This pull requests adds the new web interface based on the PatternFly 4 design framework.
This framework enables us to develop more quickly the interfaces necessary in OpenDC. 

* Remove the OpenDC landing page from the web interface module
* Add support for the PatternFly 4 framework in Next.js
* Relax topology schema requirements
* Migrate UI components to PatternFly 4

1 files changed, 28 insertions, 20 deletions

diff --git a/opendc-web/opendc-web-ui/src/components/app/sidebars/topology/machine/UnitAddComponent.js b/opendc-web/opendc-web-ui/src/components/app/sidebars/topology/machine/UnitAddComponent.js
index 532add37..88591208 100644
--- a/opendc-web/opendc-web-ui/src/components/app/sidebars/topology/machine/UnitAddComponent.js
+++ b/opendc-web/opendc-web-ui/src/components/app/sidebars/topology/machine/UnitAddComponent.js
@@ -1,28 +1,36 @@
 import PropTypes from 'prop-types'
-import React, { useRef } from 'react'
-import { Button, Form, FormGroup, Input } from 'reactstrap'
-import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
-import { faPlus } from '@fortawesome/free-solid-svg-icons'
+import React, { useState } from 'react'
+import { Button, InputGroup, Select, SelectOption, SelectVariant } from '@patternfly/react-core'
+import PlusIcon from '@patternfly/react-icons/dist/js/icons/plus-icon'
 
 function UnitAddComponent({ units, onAdd }) {
-    const unitSelect = useRef(null)
+    const [isOpen, setOpen] = useState(false)
+    const [selected, setSelected] = useState(null)
 
     return (
-        <Form inline>
-            <FormGroup className="w-100">
-                <Input type="select" className="w-70 mr-1" innerRef={unitSelect}>
-                    {units.map((unit) => (
-                        <option value={unit._id} key={unit._id}>
-                            {unit.name}
-                        </option>
-                    ))}
-                </Input>
-                <Button color="primary" outline onClick={() => onAdd(unitSelect.current.value)}>
-                    <FontAwesomeIcon icon={faPlus} className="mr-2" />
-                    Add
-                </Button>
-            </FormGroup>
-        </Form>
+        <InputGroup>
+            <Select
+                variant={SelectVariant.single}
+                placeholderText="Select a unit"
+                aria-label="Select Unit"
+                onToggle={() => setOpen(!isOpen)}
+                isOpen={isOpen}
+                onSelect={(_, selection) => {
+                    setSelected(selection)
+                    setOpen(false)
+                }}
+                selections={selected}
+            >
+                {units.map((unit) => (
+                    <SelectOption value={unit._id} key={unit._id}>
+                        {unit.name}
+                    </SelectOption>
+                ))}
+            </Select>
+            <Button icon={<PlusIcon />} variant="control" onClick={() => onAdd(selected)}>
+                Add
+            </Button>
+        </InputGroup>
     )
 }