md-search-text-change in md-autocomplete doesn't work when delete select text

[caok2709]

Hello guys!
I think I found a bug for md-search-test-change.
This directive can't detect search text is empty if user do this :

If user first type: "abc", the md-search-text-change do will be called. There is no problem.
However, if the user firstly input a word "abc" in the input box and then delete them together or just press delete on the keyboard ,the md-search-text-change won't get a chance to call.....
Which means: there is no way to determine if the search text is empty or not.

I know there is a button at the end for input box. If we press that clean button, the search text will gone. and the model bind to md-selected-item will gone....
Question is: you can't force user to press that button to clean the selectItem model ...

Anyone know , how to tell if the search text is empty when user clean them by the way I gave?

[caok2709]

I checkout the source code of angular-material.js
on line: 10181 function handleSearchText may need to fix.
if the searchText is empty and length is less than the minLength, it will return the function .
The last two lines:
if ($scope.textChange && searchText !== previousSearchText)
$scope.textChange(getItemScope($scope.selectedItem)); won't even got called.

So we can't just return the function we still need to check the searchText and previousSearchText.
if previousSearchText is no undefined (which means it do have a value). .... then we need to run another logic. Otherwise, any function in md-search-text-change won't get called.

function handleSearchText (searchText, previousSearchText) {
self.index = -1;
//if ($scope.textChange && searchText !== previousSearchText)
// $scope.textChange(getItemScope($scope.selectedItem));
if (!searchText || searchText.length < Math.max(parseInt($scope.minLength, 10), 1)) {
self.loading = false;
self.matches = [];
self.hidden = shouldHide();
updateMessages();
return;
}
var term = searchText.toLowerCase();
if (promise && promise.cancel) {
promise.cancel();
promise = null;
}
if (!$scope.noCache && cache[term]) {
self.matches = cache[term];
updateMessages();
} else {
self.fetch(searchText);
}
self.hidden = shouldHide();
if ($scope.textChange && searchText !== previousSearchText)
$scope.textChange(getItemScope($scope.selectedItem));
}

[piyushchauhan2011]

Not working for me in 0.10 release 😞
md-search-text-change is not getting called!

[piyushchauhan2011]

Sorry working fine now.!