Hide controls when appropriate (#327)

* Hide image file controls when it is attached

* Hide device actions when no device is attached

src/web/templates/index.html

@@ -60,6 +60,7 @@
             <td style="text-align:center">{{device.vendor}} {{device.product}}</td>
 	    {% endif %}
             <td style="text-align:left">
+		{% if device.device_type != "-" %}
                 {% if device.device_type in removable_device_types and "No Media" not in device.status %}
                 <form action="/scsi/eject" method="post" onsubmit="return confirm('Eject Disk?')">
                     <input type="hidden" name="scsi_id" value="{{device.id}}">
@@ -83,6 +84,7 @@
                     <input type="submit" value="Info" />
                 </form>
                 {% endif %}
+                {% endif %}
             </td>
             {% else %}
             <td class="inactive">{{device.id}}</td>
@@ -129,6 +131,9 @@
                 </form>
             </td>
 	    <td>
+		{% if file["name"] in attached_images %}
+		<center>Attached!</center>
+		{% else %}
                 <form action="/scsi/attach" method="post">
                     <input type="hidden" name="file_name" value="{{file["name"]}}">
                     <input type="hidden" name="file_size" value="{{file["size"]}}">
@@ -163,6 +168,7 @@
 		    <input type="submit" value="Properties">
 		</form>
 		{% endif %}
+		{% endif %}
             </td>
         </tr>
         {% endfor %}

src/web/web.py

@@ -63,8 +63,11 @@ def index():
     sorted_image_files = sorted(files["files"], key = lambda x: x["name"].lower())
     sorted_config_files = sorted(config_files, key = lambda x: x.lower())
 
+    from pathlib import Path
+    attached_images = []
     luns = 0
     for d in devices["device_list"]:
+        attached_images.append(Path(d["image"]).name)
         luns += int(d["un"])
 
     reserved_scsi_ids = server_info["reserved_ids"]
@@ -80,7 +83,6 @@ def index():
             list(ARCHIVE_FILE_SUFFIX)
             )
 
-
     return render_template(
         "index.html",
         bridge_configured=is_bridge_setup(),
@@ -91,6 +93,7 @@ def index():
         cfg_dir=cfg_dir,
         scsi_ids=scsi_ids,
         recommended_id=recommended_id,
+        attached_images=attached_images,
         luns=luns,
         reserved_scsi_ids=reserved_scsi_ids,
         max_file_size=int(MAX_FILE_SIZE / 1024 / 1024),