1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
"use strict";
const events = require("../events.js");
const views = require("../util/views.js");
const template = views.getTemplate("file-dropper");
const KEY_RETURN = 13;
class FileDropperControl extends events.EventTarget {
constructor(target, options) {
super();
this._options = options;
const source = template({
extraText: options.extraText,
allowMultiple: options.allowMultiple,
allowUrls: options.allowUrls,
lock: options.lock,
id: "file-" + Math.random().toString(36).substring(7),
urlPlaceholder:
options.urlPlaceholder || "Alternatively, paste an URL here.",
});
this._dropperNode = source.querySelector(".file-dropper");
this._urlInputNode = source.querySelector("input[type=text]");
this._urlConfirmButtonNode = source.querySelector("button");
this._fileInputNode = source.querySelector("input[type=file]");
this._fileInputNode.style.display = "none";
this._fileInputNode.multiple = options.allowMultiple || false;
this._counter = 0;
this._dropperNode.addEventListener("dragenter", (e) =>
this._evtDragEnter(e)
);
this._dropperNode.addEventListener("dragleave", (e) =>
this._evtDragLeave(e)
);
this._dropperNode.addEventListener("dragover", (e) =>
this._evtDragOver(e)
);
this._dropperNode.addEventListener("drop", (e) => this._evtDrop(e));
this._fileInputNode.addEventListener("change", (e) =>
this._evtFileChange(e)
);
if (this._urlInputNode) {
this._urlInputNode.addEventListener("keydown", (e) =>
this._evtUrlInputKeyDown(e)
);
}
if (this._urlConfirmButtonNode) {
this._urlConfirmButtonNode.addEventListener("click", (e) =>
this._evtUrlConfirmButtonClick(e)
);
}
this._originalHtml = this._dropperNode.innerHTML;
views.replaceContent(target, source);
}
reset() {
this._dropperNode.innerHTML = this._originalHtml;
this.dispatchEvent(new CustomEvent("reset"));
}
_emitFiles(files) {
files = Array.from(files);
if (this._options.lock) {
this._dropperNode.innerText = files
.map((file) => file.name)
.join(", ");
}
this.dispatchEvent(
new CustomEvent("fileadd", { detail: { files: files } })
);
}
_emitUrls(urls) {
urls = Array.from(urls).map((url) => url.trim());
if (this._options.lock) {
this._dropperNode.innerText = urls
.map((url) => url.split(/\//).reverse()[0])
.join(", ");
}
for (let url of urls) {
if (!url) {
return;
}
if (!url.match(/^https?:\/\/[^.]+\..+$/)) {
window.alert(`"${url}" does not look like a valid URL.`);
return;
}
}
this.dispatchEvent(
new CustomEvent("urladd", { detail: { urls: urls } })
);
}
_evtDragEnter(e) {
this._dropperNode.classList.add("active");
this._counter++;
}
_evtDragLeave(e) {
this._counter--;
if (this._counter === 0) {
this._dropperNode.classList.remove("active");
}
}
_evtDragOver(e) {
e.preventDefault();
}
_evtFileChange(e) {
this._emitFiles(e.target.files);
}
_evtDrop(e) {
e.preventDefault();
this._dropperNode.classList.remove("active");
if (!e.dataTransfer.files.length) {
window.alert("Only files are supported.");
}
if (!this._options.allowMultiple && e.dataTransfer.files.length > 1) {
window.alert("Cannot select multiple files.");
}
this._emitFiles(e.dataTransfer.files);
}
_evtUrlInputKeyDown(e) {
if (e.which !== KEY_RETURN) {
return;
}
e.preventDefault();
this._dropperNode.classList.remove("active");
this._emitUrls(this._urlInputNode.value.split(/[\r\n]/));
this._urlInputNode.value = "";
}
_evtUrlConfirmButtonClick(e) {
e.preventDefault();
this._dropperNode.classList.remove("active");
this._emitUrls(this._urlInputNode.value.split(/[\r\n]/));
this._urlInputNode.value = "";
}
}
module.exports = FileDropperControl;
|
