aboutsummaryrefslogtreecommitdiff
path: root/ext/fg/js/popup-proxy-host.js
blob: b9a5617cf68b28fd2b3f2c3fdd1c829b5cf1fdfc (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
164
165
166
167
168
169
170
171
172
/*
 * Copyright (C) 2019-2020  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 <https://www.gnu.org/licenses/>.
 */

/*global apiFrameInformationGet, FrontendApiReceiver, Popup*/

class PopupProxyHost {
    constructor() {
        this._popups = new Map();
        this._nextId = 0;
        this._apiReceiver = null;
        this._frameIdPromise = null;
    }

    // Public functions

    async prepare() {
        this._frameIdPromise = apiFrameInformationGet();
        const {frameId} = await this._frameIdPromise;
        if (typeof frameId !== 'number') { return; }

        this._apiReceiver = new FrontendApiReceiver(`popup-proxy-host#${frameId}`, new Map([
            ['getOrCreatePopup', this._onApiGetOrCreatePopup.bind(this)],
            ['setOptions', this._onApiSetOptions.bind(this)],
            ['hide', this._onApiHide.bind(this)],
            ['isVisible', this._onApiIsVisibleAsync.bind(this)],
            ['setVisibleOverride', this._onApiSetVisibleOverride.bind(this)],
            ['containsPoint', this._onApiContainsPoint.bind(this)],
            ['showContent', this._onApiShowContent.bind(this)],
            ['setCustomCss', this._onApiSetCustomCss.bind(this)],
            ['clearAutoPlayTimer', this._onApiClearAutoPlayTimer.bind(this)],
            ['setContentScale', this._onApiSetContentScale.bind(this)]
        ]));
    }

    getOrCreatePopup(id=null, parentId=null) {
        // Find by existing id
        if (id !== null) {
            const popup = this._popups.get(id);
            if (typeof popup !== 'undefined') {
                return popup;
            }
        }

        // Find by existing parent id
        let parent = null;
        if (parentId !== null) {
            parent = this._popups.get(parentId);
            if (typeof parent !== 'undefined') {
                const popup = parent.child;
                if (popup !== null) {
                    return popup;
                }
            } else {
                parent = null;
            }
        }

        // New unique id
        if (id === null) {
            id = this._nextId++;
        }

        // Create new popup
        const depth = (parent !== null ? parent.depth + 1 : 0);
        const popup = new Popup(id, depth, this._frameIdPromise);
        if (parent !== null) {
            popup.setParent(parent);
        }
        this._popups.set(id, popup);
        return popup;
    }

    // Message handlers

    async _onApiGetOrCreatePopup({id, parentId}) {
        const popup = this.getOrCreatePopup(id, parentId);
        return {
            id: popup.id
        };
    }

    async _onApiSetOptions({id, options}) {
        const popup = this._getPopup(id);
        return await popup.setOptions(options);
    }

    async _onApiHide({id, changeFocus}) {
        const popup = this._getPopup(id);
        return popup.hide(changeFocus);
    }

    async _onApiIsVisibleAsync({id}) {
        const popup = this._getPopup(id);
        return await popup.isVisible();
    }

    async _onApiSetVisibleOverride({id, visible}) {
        const popup = this._getPopup(id);
        return await popup.setVisibleOverride(visible);
    }

    async _onApiContainsPoint({id, x, y}) {
        const popup = this._getPopup(id);
        const rootPagePoint = PopupProxyHost._convertPopupPointToRootPagePoint(popup, x, y);
        return await popup.containsPoint(...rootPagePoint);
    }

    async _onApiShowContent({id, elementRect, writingMode, type, details}) {
        const popup = this._getPopup(id);
        elementRect = PopupProxyHost._convertJsonRectToDOMRect(popup, elementRect);
        if (!PopupProxyHost._popupCanShow(popup)) { return; }
        return await popup.showContent(elementRect, writingMode, type, details);
    }

    async _onApiSetCustomCss({id, css}) {
        const popup = this._getPopup(id);
        return popup.setCustomCss(css);
    }

    async _onApiClearAutoPlayTimer({id}) {
        const popup = this._getPopup(id);
        return popup.clearAutoPlayTimer();
    }

    async _onApiSetContentScale({id, scale}) {
        const popup = this._getPopup(id);
        return popup.setContentScale(scale);
    }

    // Private functions

    _getPopup(id) {
        const popup = this._popups.get(id);
        if (typeof popup === 'undefined') {
            throw new Error(`Invalid popup ID ${id}`);
        }
        return popup;
    }

    static _convertJsonRectToDOMRect(popup, jsonRect) {
        const [x, y] = PopupProxyHost._convertPopupPointToRootPagePoint(popup, jsonRect.x, jsonRect.y);
        return new DOMRect(x, y, jsonRect.width, jsonRect.height);
    }

    static _convertPopupPointToRootPagePoint(popup, x, y) {
        if (popup.parent !== null) {
            const popupRect = popup.parent.getContainerRect();
            x += popupRect.x;
            y += popupRect.y;
        }
        return [x, y];
    }

    static _popupCanShow(popup) {
        return popup.parent === null || popup.parent.isVisibleSync();
    }
}