[FIX] web: typo in function name (FieldBoolean._onKeydown)

When focusing a checkbox field and hitting the "enter" key, the
checkbox should change its status. Before this commit, this produced
a traceback instead as it was trying to call the `_onKeyDown`
function while it was defined as `_onKeydown`.

Also the `_onKeydown` method is in fact declared in the `AbstractField`
parent implementation, so there is no point in declaring the event
binding twice. Also, part of the `FieldBoolean._onKeydown` code was in
common with its parent `AbstractField._onKeydown` code so remove it as
there is no point in duplicating it.
Note: this `_onKeydown` method has to be refactored as it is breaking
form view navigation anyway.

Also modify an existing test to check the checkbox keyboard navigation.

addons/web/static/src/js/fields/basic_fields.js

@@ -373,7 +373,6 @@ var FieldBoolean = AbstractField.extend({
     className: 'o_field_boolean',
     events: _.extend({}, AbstractField.prototype.events, {
         change: '_onChange',
-        keydown: '_onKeyDown',
     }),
     replace_element: true,
     supportedFieldTypes: ['boolean'],
@@ -455,6 +454,7 @@ var FieldBoolean = AbstractField.extend({
      * @param {KeyEvent} event
      */
     _onKeydown: function (event) {
+        this._super.apply(this, arguments);
         switch (event.which) {
             case $.ui.keyCode.DOWN:
                 this.trigger_up('move_down');
@@ -468,10 +468,6 @@ var FieldBoolean = AbstractField.extend({
             case $.ui.keyCode.RIGHT:
                 this.trigger_up('move_right');
                 break;
-            case $.ui.keyCode.TAB:
-                this.trigger_up('move_next');
-                event.preventDefault();
-                break;
             case $.ui.keyCode.ENTER:
                 this.$input.prop('checked', !this.value);
                 this._setValue(!this.value);

addons/web/static/test/fields/basic_fields_tests.js

@@ -109,7 +109,7 @@ QUnit.module('basic_fields', {
 
     QUnit.module('FieldBoolean');
 
-    QUnit.test('boolean field in form view', function(assert) {
+    QUnit.test('boolean field in form view', function (assert) {
         assert.expect(7);
 
         var form = createView({
@@ -142,8 +142,11 @@ QUnit.module('basic_fields', {
         form.$buttons.find('.o_form_button_edit').click();
         assert.strictEqual(form.$('.o_field_boolean input:checked').length, 0,
             "checkbox should still be unchecked");
-        // check the checkbox
-        form.$('.o_field_boolean input').click();
+        // check the checkbox by hitting the "enter" key after focusing it
+        form.$('.o_field_boolean input')
+            .trigger("focusin")
+            .trigger({type: "keydown", which: $.ui.keyCode.ENTER})
+            .trigger({type: "keyup", which: $.ui.keyCode.ENTER});
         assert.strictEqual(form.$('.o_field_boolean input:checked').length, 1,
             "checkbox should now be checked");
 
@@ -154,7 +157,7 @@ QUnit.module('basic_fields', {
         form.destroy();
     });
 
-    QUnit.test('boolean field in editable list view', function(assert) {
+    QUnit.test('boolean field in editable list view', function (assert) {
         assert.expect(11);
 
         var list = createView({