Repository navigation
Expand file tree
/
Copy pathlog.ts
More file actions
103 lines (90 loc) · 2.66 KB
/
Copy pathlog.ts
File metadata and controls
103 lines (90 loc) · 2.66 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
<
8000
div data-line-number="17" class="react-line-number react-code-text" style="padding-right:16px">1718
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
// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import {Nullable} from './base';
import {getElement, querySelector} from './util';
type CmdHandler = (cmd: string) => void;
// TODO(tommadams): Rename to Console.
class Log {
logElem: HTMLElement;
consoleElem: Nullable<HTMLElement> = null;
private cmdHandler: Nullable<CmdHandler> = null;
private scrollPending = false;
constructor(logElemId: string, consoleElemId: Nullable<string> = null) {
this.logElem = getElement(logElemId);
if (consoleElemId) {
this.consoleElem = getElement(consoleElemId);
this.consoleElem.addEventListener('keypress', (e) => {
// The TypeScript compiler isn't smart enough to understand that
// consoleElem is never null here.
let elem = this.consoleElem as HTMLElement;
if (e.keyCode == 13) {
let cmd = elem.innerText.trim();
if (cmd != '' && this.cmdHandler) {
this.cmdHandler(cmd);
}
elem.innerHTML = '';
e.preventDefault();
return false;
}
});
}
}
log(msg: string | HTMLElement, className='') {
let child: HTMLElement;
if (typeof msg == 'string') {
if (msg == '') {
msg = ' ';
}
child = document.createElement('div');
child.innerText = msg;
if (className != '') {
child.className = className;
}
} else {
child = msg as HTMLElement;
}
this.logElem.appendChild(child);
}
clear() {
this.logElem.innerHTML = '';
}
scroll() {
if (!this.scrollPending) {
this.scrollPending = true;
window.requestAnimationFrame(() => {
this.scrollPending = false;
if (this.logElem.lastElementChild) {
this.logElem.lastElementChild.scrollIntoView();
}
});
}
}
onConsoleCmd(cmdHandler: CmdHandler) {
this.cmdHandler = cmdHandler;
}
get hasFocus() {
return this.consoleElem && document.activeElement == this.consoleElem;
}
focus() {
if (this.consoleElem) {
this.consoleElem.focus();
}
}
blur() {
if (this.consoleElem) {
this.consoleElem.blur();
}
}
}
export {Log}