summaryrefslogtreecommitdiff
path: root/ext/fg/js/content-script-main.js
blob: cebda2d75bf142cbafb4315b2d06a76a81973295 (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
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
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
 * Copyright (C) 2019-2020  Yomichan Authors
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

/* global
 * DOM
 * FrameOffsetForwarder
 * Frontend
 * PopupFactory
 * PopupProxy
 * api
 */

async function createPopupFactory() {
    const {frameId} = await api.frameInformationGet();
    if (typeof frameId !== 'number') {
        const error = new Error('Failed to get frameId');
        yomichan.logError(error);
        throw error;
    }

    const popupFactory = new PopupFactory(frameId);
    await popupFactory.prepare();
    return popupFactory;
}

async function createIframePopupProxy(frameOffsetForwarder, setDisabled) {
    const rootPopupInformationPromise = yomichan.getTemporaryListenerResult(
        chrome.runtime.onMessage,
        ({action, params}, {resolve}) => {
            if (action === 'rootPopupInformation') {
                resolve(params);
            }
        }
    );
    api.broadcastTab('rootPopupRequestInformationBroadcast');
    const {popupId, frameId: parentFrameId} = await rootPopupInformationPromise;

    const getFrameOffset = frameOffsetForwarder.getOffset.bind(frameOffsetForwarder);

    const popup = new PopupProxy(popupId, 0, null, parentFrameId, getFrameOffset, setDisabled);
    await popup.prepare();

    return popup;
}

async function getOrCreatePopup(depth, popupFactory) {
    return popupFactory.getOrCreatePopup(null, null, depth);
}

async function createPopupProxy(depth, id, parentFrameId) {
    const popup = new PopupProxy(null, depth + 1, id, parentFrameId);
    await popup.prepare();

    return popup;
}

(async () => {
    api.forwardLogsToBackend();
    await yomichan.prepare();

    const data = window.frontendInitializationData || {};
    const {id, depth=0, parentFrameId, url=window.location.href, proxy=false, isSearchPage=false} = data;

    const isIframe = !proxy && (window !== window.parent);

    const popups = {
        iframe: null,
        proxy: null,
        normal: null
    };

    let frontend = null;
    let frontendPreparePromise = null;
    let frameOffsetForwarder = null;
    let popupFactoryPromise = null;

    let iframePopupsInRootFrameAvailable = true;

    const disableIframePopupsInRootFrame = () => {
        iframePopupsInRootFrameAvailable = false;
        applyOptions();
    };

    let urlUpdatedAt = 0;
    let popupProxyUrlCached = url;
    const getPopupProxyUrl = async () => {
        const now = Date.now();
        if (popups.proxy !== null && now - urlUpdatedAt > 500) {
            popupProxyUrlCached = await popups.proxy.getUrl();
            urlUpdatedAt = now;
        }
        return popupProxyUrlCached;
    };

    const applyOptions = async () => {
        const optionsContext = {
            depth: isSearchPage ? 0 : depth,
            url: proxy ? await getPopupProxyUrl() : window.location.href
        };
        const options = await api.optionsGet(optionsContext);

        if (!proxy && frameOffsetForwarder === null) {
            frameOffsetForwarder = new FrameOffsetForwarder();
            frameOffsetForwarder.start();
        }

        let popup;
        if (isIframe && options.general.showIframePopupsInRootFrame && DOM.getFullscreenElement() === null && iframePopupsInRootFrameAvailable) {
            popup = popups.iframe || await createIframePopupProxy(frameOffsetForwarder, disableIframePopupsInRootFrame);
            popups.iframe = popup;
        } else if (proxy) {
            popup = popups.proxy || await createPopupProxy(depth, id, parentFrameId);
            popups.proxy = popup;
        } else {
            popup = popups.normal;
            if (!popup) {
                if (popupFactoryPromise === null) {
                    popupFactoryPromise = createPopupFactory();
                }
                const popupFactory = await popupFactoryPromise;
                const popupNormal = await getOrCreatePopup(depth, popupFactory);
                popups.normal = popupNormal;
                popup = popupNormal;
            }
        }

        if (frontend === null) {
            const getUrl = proxy ? getPopupProxyUrl : null;
            frontend = new Frontend(popup, getUrl);
            frontendPreparePromise = frontend.prepare();
            await frontendPreparePromise;
        } else {
            await frontendPreparePromise;
            if (isSearchPage) {
                const disabled = !options.scanning.enableOnSearchPage;
                frontend.setDisabledOverride(disabled);
            }

            if (isIframe) {
                await frontend.setPopup(popup);
            }
        }
    };

    yomichan.on('optionsUpdated', applyOptions);
    window.addEventListener('fullscreenchange', applyOptions, false);

    await applyOptions();
})();