summaryrefslogtreecommitdiff
path: root/ext/fg/js/popup.js
blob: 930df18dcf88092914d2e7479cc0530d7fe1f926 (plain)
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
/*
 * Copyright (C) 2016  Alex Yatskov <alex@foosoft.net>
 * Author: Alex Yatskov <alex@foosoft.net>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


class Popup {
    constructor() {
        this.popup = null;
        this.offset = 10;
    }

    showAt(pos, content) {
        this.inject();

        this.popup.style.left = pos.x + 'px';
        this.popup.style.top = pos.y + 'px';
        this.popup.style.visibility = 'visible';

        this.setContent(content);
    }

    showNextTo(elementRect, content) {
        this.inject();

        const popupRect = this.popup.getBoundingClientRect();

        let posX = elementRect.left;
        if (posX + popupRect.width >= window.innerWidth) {
            posX = window.innerWidth - popupRect.width;
        }

        let posY = elementRect.bottom + this.offset;
        if (posY + popupRect.height >= window.innerHeight) {
            posY = elementRect.top - popupRect.height - this.offset;
        }

        this.showAt({x: posX, y: posY}, content);
    }

    hide() {
        if (this.popup !== null) {
            this.popup.style.visibility = 'hidden';
        }
    }

    setContent(content) {
        if (this.popup === null) {
            return;
        }

        const doc = this.popup.contentDocument;
        doc.open();
        doc.write(content);
        doc.close();
    }

    sendMessage(action, params, callback) {
        if (this.popup !== null) {
            this.popup.contentWindow.postMessage({action, params}, '*');
        }
    }

    inject() {
        if (this.popup !== null) {
            return;
        }

        this.popup = document.createElement('iframe');
        this.popup.id = 'yomichan-popup';
        this.popup.addEventListener('mousedown', e => e.stopPropagation());
        this.popup.addEventListener('scroll', e => e.stopPropagation());

        document.body.appendChild(this.popup);
    }
}