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path: root/ext/fg/js/float.js
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/*
 * Copyright (C) 2016-2017  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 DisplayFloat extends Display {
    constructor() {
        super($('#spinner'), $('#definitions'));
        this.autoPlayAudioTimer = null;
        this.styleNode = null;

        $(window).on('message', utilAsync(this.onMessage.bind(this)));
    }

    onError(error) {
        if (window.yomichan_orphaned) {
            this.onOrphaned();
        } else {
            window.alert(`Error: ${error.toString ? error.toString() : error}`);
        }
    }

    onOrphaned() {
        $('#definitions').hide();
        $('#error-orphaned').show();
    }

    onSearchClear() {
        window.parent.postMessage('popupClose', '*');
    }

    onSelectionCopy() {
        window.parent.postMessage('selectionCopy', '*');
    }

    onMessage(e) {
        const handlers = {
            termsShow: ({definitions, options, context}) => {
                this.termsShow(definitions, options, context);
            },

            kanjiShow: ({definitions, options, context}) => {
                this.kanjiShow(definitions, options, context);
            },

            clearAutoPlayTimer: () => {
                this.clearAutoPlayTimer();
            },

            orphaned: () => {
                this.onOrphaned();
            },

            setOptions: (options) => {
                const css = options.general.customPopupCss;
                if (css) {
                    this.setStyle(css);
                }
            }
        };

        const {action, params} = e.originalEvent.data;
        const handler = handlers[action];
        if (handler) {
            handler(params);
        }
    }

    onKeyDown(e) {
        const handlers = {
            67: /* c */ () => {
                if (e.ctrlKey && !window.getSelection().toString()) {
                    this.onSelectionCopy();
                    return true;
                }
            }
        };

        const handler = handlers[e.keyCode];
        if (handler && handler()) {
            e.preventDefault();
        } else {
            super.onKeyDown(e);
        }
    }

    autoPlayAudio() {
        this.clearAutoPlayTimer();
        this.autoPlayAudioTimer = window.setTimeout(() => super.autoPlayAudio(), 400);
    }

    clearAutoPlayTimer() {
        if (this.autoPlayAudioTimer) {
            window.clearTimeout(this.autoPlayAudioTimer);
            this.autoPlayAudioTimer = null;
        }
    }

    setStyle(css) {
        const parent = document.head;

        if (this.styleNode === null) {
            this.styleNode = document.createElement('style');
        }

        this.styleNode.textContent = css;

        if (this.styleNode.parentNode !== parent) {
            parent.appendChild(this.styleNode);
        }
    }
}

window.yomichan_display = new DisplayFloat();