[PATCH] toaster: disable/enable "Add layer" button according to input's content

* [PATCH] toaster: disable/enable "Add layer" button according to input's content
@ 2016-03-30  9:10 Elliot Smith
  2016-04-12 14:10 ` Joshua G Lock
  0 siblings, 1 reply; 4+ messages in thread
From: Elliot Smith @ 2016-03-30  9:10 UTC (permalink / raw)
  To: toaster

In the import layer page, the "Add layer" button in the layer dependencies
section doesn't accurately reflect whether the layer name in the
corresponding input can be added. A partial or empty layer name can
leave the button active, such that when it is clicked, a
previously-selected layer can be accidentally added.

Fix by keeping track of the items currently available in the typeahead,
only activating the "Add layer" button when the input matches the name
of one of those items.

[YOCTO #8511]

Signed-off-by: Elliot Smith <elliot.smith@intel.com>
---
 .../toaster/toastergui/static/js/importlayer.js    | 30 +++++++++++++++++++++-
 .../lib/toaster/toastergui/static/js/libtoaster.js |  5 ++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/bitbake/lib/toaster/toastergui/static/js/importlayer.js b/bitbake/lib/toaster/toastergui/static/js/importlayer.js
index c68f366..5a59799 100644
--- a/bitbake/lib/toaster/toastergui/static/js/importlayer.js
+++ b/bitbake/lib/toaster/toastergui/static/js/importlayer.js
@@ -18,10 +18,38 @@ function importLayerPageInit (ctx) {
 
   libtoaster.makeTypeahead(layerDepInput, libtoaster.ctx.layersTypeAheadUrl, { include_added: "true" }, function(item){
     currentLayerDepSelection = item;
+  });
+
+  // choices available in the typeahead
+  var layerDepsChoices = {};
+
+  // when the typeahead choices change, store an array of the available layer
+  // choices locally, to use for enabling/disabling the "Add layer" button
+  layerDepInput.on("typeahead-choices-change", function (event, data) {
+    layerDepsChoices = {};
 
-    layerDepBtn.removeAttr("disabled");
+    if (data.choices) {
+      data.choices.forEach(function (item) {
+        layerDepsChoices[item.name] = item;
+      });
+    }
   });
 
+  // disable the "Add layer" button when the layer input typeahead is empty
+  // or not in the typeahead choices
+  layerDepInput.on("input change", function () {
+    // get the choices from the typeahead
+    var choice = layerDepsChoices[$(this).val()];
+
+    if (choice) {
+      layerDepBtn.removeAttr("disabled");
+      currentLayerDepSelection = choice;
+    }
+    else {
+      layerDepBtn.attr("disabled", "disabled");
+      currentLayerDepSelection = undefined;
+    }
+  });
 
   /* We automatically add "openembedded-core" layer for convenience as a
    * dependency as pretty much all layers depend on this one
diff --git a/bitbake/lib/toaster/toastergui/static/js/libtoaster.js b/bitbake/lib/toaster/toastergui/static/js/libtoaster.js
index b6b49b6..0e81f67 100644
--- a/bitbake/lib/toaster/toastergui/static/js/libtoaster.js
+++ b/bitbake/lib/toaster/toastergui/static/js/libtoaster.js
@@ -21,6 +21,9 @@ var libtoaster = (function (){
     var xhrReq;
 
     jQElement.typeahead({
+        // each time the typeahead's choices change, a
+        // "typeahead-choices-change" event is fired with an object
+        // containing the available choices in a "choices" property
         source: function(query, process){
           xhrParams.search = query;
 
@@ -36,6 +39,8 @@ var libtoaster = (function (){
 
             xhrReq = null;
 
+            jQElement.trigger("typeahead-choices-change", {choices: data.results});
+
             return process(data.results);
           });
         },
-- 
1.9.3

---------------------------------------------------------------------
Intel Corporation (UK) Limited
Registered No. 1134945 (England)
Registered Office: Pipers Way, Swindon SN3 1RJ
VAT No: 860 2173 47

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.



^ permalink raw reply related	[flat|nested] 4+ messages in thread