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Update items when selectable property changes, test provided, issue #126 #149

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Update items when selectable property changes, test provided, issue #126 #149

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f13fd8c
Update items when selectable property changes, test provided, issue #126
globits Mar 13, 2017
74cc0d7
fix for test basic.html. Initial item selected should be item2, #126
globits Mar 13, 2017
cad51a7
fix for basic.hmt test: selectIndex(). Trigger async function to chec…
globits Mar 13, 2017
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12 changes: 11 additions & 1 deletion iron-selectable.html
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,10 @@
* This is a CSS selector string. If this is set, only items that match the CSS selector
* are selectable.
*/
selectable: String,
selectable: {
type: String,
observer: '_selectableChanged'
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This behavior seems to have all of its observers down in the observers array. I think it might be better to put this one there too.

},

/**
* The class to set on elements when selected.
Expand Down Expand Up @@ -268,6 +271,13 @@
this._addListener(eventName);
},

_selectableChanged: function() {
this._updateItems();
if (this._shouldUpdateSelection) {
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As of 2.x you don't need to check _shouldUpdateSelection.

this._updateSelected();
}
},

_updateItems: function() {
var nodes = Polymer.dom(this).queryDistributedElements(this.selectable || '*');
nodes = Array.prototype.filter.call(nodes, this._bindFilterItem);
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23 changes: 13 additions & 10 deletions test/basic.html
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Expand Up @@ -167,19 +167,22 @@
});

test('`selectIndex()` selects an item with the given index', function() {
assert.equal(s2.selectedItem, undefined);
Polymer.Base.async(function() {
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These tests now wait for iron-items-changed, so I think after rebasing you'll find this async delay isn't necessary.

assert.equal(s2.selected, 'item2');
assert.equal(s2.selectedItem, s2.items[2]);

s2.selectIndex(1);
assert.equal(s2.selected, 'item1');
assert.equal(s2.selectedItem, s2.items[1]);
s2.selectIndex(1);
assert.equal(s2.selected, 'item1');
assert.equal(s2.selectedItem, s2.items[1]);

s2.selectIndex(3);
assert.equal(s2.selected, 'item3');
assert.equal(s2.selectedItem, s2.items[3]);
s2.selectIndex(3);
assert.equal(s2.selected, 'item3');
assert.equal(s2.selectedItem, s2.items[3]);

s2.selectIndex(4);
assert.equal(s2.selected, 'item4');
assert.equal(s2.selectedItem, s2.items[4]);
s2.selectIndex(4);
assert.equal(s2.selected, 'item4');
assert.equal(s2.selectedItem, s2.items[4]);
}, 1);
});
});

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12 changes: 12 additions & 0 deletions test/content.html
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Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,18 @@
assert.isTrue(s2.querySelector('#item4').classList.contains('iron-selected'));
});

test('selectable property changed', function() {
s2.selectable = 'hr';
// check items length
assert.equal(s2.$.selector.items.length, 2);
s2.selectable = 'item';
s2.selected = 'item4';
// check items length
assert.equal(s2.$.selector.items.length, 5);
// check selected class
assert.isTrue(s2.querySelector('#item4').classList.contains('iron-selected'));
});

});

suite('content with dom-repeat', function() {
Expand Down