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1/*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17'use strict';
18
19function processButton(buttonName, keyCode, dc) {
20  function onMouseDown(evt) {
21    dc.sendKeyEvent(keyCode, "keydown");
22  }
23
24  function onMouseUp(evt) {
25    dc.sendKeyEvent(keyCode, "keyup");
26  }
27  let button = document.getElementById(buttonName);
28  button.addEventListener('mousedown', onMouseDown);
29  button.addEventListener('mouseup', onMouseUp);
30}
31
32function processToggleButton(buttonName, keyCode, dc) {
33  let toggle = false;
34  function onMouseDown(evt) {
35    const kPrimaryButton = 1;
36    if ((evt.buttons & kPrimaryButton) == 0) {
37      return;
38    }
39    toggle = !toggle;
40    if (toggle) {
41      dc.sendKeyEvent(keyCode, "keydown");
42    } else {
43      dc.sendKeyEvent(keyCode, "keyup");
44    }
45    this.classList.toggle('active');
46  }
47
48  let button = document.getElementById(buttonName);
49  button.addEventListener('mousedown', onMouseDown);
50}
51
52function enableKeyboardRewriteButton(dc) {
53  processToggleButton("shift-button", "ShiftLeft", dc);
54  processToggleButton("ctrl-button", "CtrlLeft", dc);
55  processToggleButton("alt-button", "AltLeft", dc);
56  processToggleButton("super-button", "MetaLeft", dc);
57  processButton("tab-button", "Tab", dc);
58}
59