https://www.ganttstreetbaptist.org/_content/Blazored.Typeahead/blazored-typeahead.js

1"use strict";
2
3var onOutsideClickFunctions = {};
4
5window.blazoredTypeahead = {
6    assemblyname: "Blazored.Typeahead",
7    setFocus: function (element) {
8        if (element && element.focus) element.focus();
9    },
10    // No need to remove the event listeners later, the browser will clean this up automagically.
11    addKeyDownEventListener: function (element) {
12        if (element) {
13            element.addEventListener('keydown', function (event) {
14                var key = event.key;
15
16                if (key === "Enter") {
17                    event.preventDefault();
18                }
19            });
20        }
21    },
22    onOutsideClickClear: function (element) {
23
24        if (element == null) {
25            return;
26        }
27
28        var bId = "";
29        for (var clearCount = 0; clearCount < element.attributes.length; clearCount++) {
30            var a = element.attributes[clearCount];
31            if (a.name.startsWith('_bl_')) {
32                bId = a.name;
33                break;
34            }
35        }
36
37        var func = onOutsideClickFunctions[bId];
38        if (func == null || func == "undefined") {
39            return;
40        }
41        window.removeEventListener("click", func);
42        onOutsideClickFunctions[bId] = null;
43    },
44    onOutsideClick: function (searchTextElement, dotnetRef, methodName, clearOnFire) {
45
46        if (searchTextElement == null) {
47            return;
48        }
49
50        var bId = "";//get the blazor internal ID to distinguish different components
51        for (var clearCount = 0; clearCount < searchTextElement.attributes.length; clearCount++) {
52            var a = searchTextElement.attributes[clearCount];
53            if (a.name.startsWith('_bl_')) {
54                bId = a.name;
55                break;
56            }
57        }
58
59        blazoredTypeahead.onOutsideClickClear(searchTextElement); //clean up just in case
60
61        var func = function(e) {
62            var parent = e.target;
63            while (parent != null) {
64                if (parent.classList != null && parent.classList.contains('blazored-typeahead')) {
65                    var hasSearch = parent.contains(searchTextElement); //check if this is the same typeahead parent element
66                    if (hasSearch) {
67                        return; //we're still in the search so don't fire
68                    }
69                }
70                parent = parent.parentNode;
71            }
72
73            dotnetRef.invokeMethodAsync(methodName);
74            if (clearOnFire) { //could also add a check to see if the search element is missing on the DOM to force cleaning up the function?
75                blazoredTypeahead.onOutsideClickClear(searchTextElement);
76            }
77        };
78        onOutsideClickFunctions[bId] = func; //save a reference to the click function
79        window.addEventListener("click", func);
80    }
81};