Lobster Keys

Keybindings for lobste.rs
安裝腳本 ?
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// ==UserScript==
// @name         Lobster Keys
// @description  Keybindings for lobste.rs
// @namespace    https://rodaine.com
// @source       https://github.com/rodaine/lobster-keys.git
// @version      0.1.0
// @author       Chris Roche <github@rodaine.com>
// @match        https://lobste.rs/*
// @grant        none
// @noframes
// ==/UserScript==
 
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/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
 
"use strict";
 
/**
 * Story element on the document.
 */
class Story {
    constructor(el) {
        this._el = el;
    }
    /**
     * Extracts all stories in-order from `d`.
     *
     * @param d Document
     */
    static FromDoc(d = window.document) {
        let els = d.getElementsByClassName('story');
        let out = [];
        for (let el of els) {
            out.push(new Story(el));
        }
        return out;
    }
    /**
     * Selects this story, making the keybindings apply to this Story. If a
     * different story was previously seelcted, that story should be
     * unfocused first.
     */
    focus() {
        this._el.classList.add(Story.focusCls);
        let url = this.getAnchor(".u-url" /* URL */);
        if (url) {
            url.focus();
            url.blur();
        }
        this.scrollIntoView();
    }
    /**
     * Deselects this story.
     */
    unfocus() {
        this._el.classList.remove(Story.focusCls);
    }
    /**
     * Opens the Story's URL
     */
    open() { this.click(".u-url" /* URL */); }
    /**
     * Opens the domain search page for the Story's hostname
     */
    domain() { this.click(".domain" /* Domain */); }
    /**
     * Opens the Story's author's profile page.
     */
    author() { this.click(".u-author" /* Author */); }
    /**
     * Opens the flag dropdown menu, and moves focus to the first option.
     */
    flag() {
        this.click(".flagger" /* Flag */);
        let opts = window.document.querySelector('#downvote_why a');
        opts && opts.focus();
    }
    /**
     * Toggles whether or not the Story is hidden.
     */
    hide() { this.click(".hider" /* Hide */); }
    /**
     * Toggles whether or not the Story is saved.
     */
    save() { this.click(".saver" /* Save */); }
    /**
     * Opens the Story's comments page.
     */
    comments() { this.click(".comments_label a" /* Comments */); }
    /**
     * Toggles the Story's upvote arrow.
     */
    upvote() { this.click(".upvoter" /* Upvote */); }
    getAnchor(a) {
        return this._el.querySelector(a);
    }
    click(a) {
        let anchor = this.getAnchor(a);
        anchor && anchor.click();
    }
    scrollIntoView() {
        let bound = this._el.getBoundingClientRect();
        if (bound.top < 0
            || bound.left < 0
            || bound.bottom > (window.innerHeight || document.documentElement.clientHeight)
            || bound.right > (window.innerWidth || document.documentElement.clientWidth)) {
            return this._el.scrollIntoView(Story.scrollOpts);
        }
    }
}
/**
 * The class name applied to the selected [[Story]]
 */
Story.focusCls = 'lobster-keys-focus';
Story.scrollOpts = { block: "nearest" };
/**
 * Interaction controller for the keybindings
 */
class LobstersKeyController {
    /**
     * Attaches a controller to `d`, listening for events and injecting styles
     * if a [[Story]] list is detected.
     *
     * @param d Document
     */
    constructor(d = window.document) {
        this.stories = Story.FromDoc(d);
        if (this.stories.length > 0) {
            document.addEventListener('keyup', (e) => { this.handleKeyUp(e); });
            this.attachStyles(d);
        }
    }
    get index() { return this._idx; }
    set index(i) {
        if (i === undefined) {
            this._idx = undefined;
            return;
        }
        if (i < 0) {
            i = 0;
        }
        else if (i >= this.stories.length) {
            i = this.stories.length - 1;
        }
        this._idx = i;
    }
    get story() {
        let i = this.index;
        return i === undefined ? undefined : this.stories[i];
    }
    changeStory(d) {
        if (this.index === undefined) {
            switch (d) {
                case 1 /* Next */:
                    this.index = 0;
                    break;
                case 0 /* Previous */:
                    this.index = this.stories.length - 1;
                    break;
            }
        }
        else {
            this.story && this.story.unfocus();
            switch (d) {
                case 1 /* Next */:
                    this.index++;
                    break;
                case 0 /* Previous */:
                    this.index--;
                    break;
            }
        }
        this.story && this.story.focus();
    }
    changePage(d) {
        switch (d) {
            case 0 /* Previous */:
                let prev = window.document.querySelector('.morelink a:first-child');
                prev && prev.innerText.indexOf('<<') > -1 && prev.click();
                break;
            case 1 /* Next */:
                let next = window.document.querySelector('.morelink a:last-child');
                next && next.innerText.indexOf('>>') > -1 && next.click();
                break;
        }
    }
    handleKeyUp(e) {
        switch (e.code) {
            case "KeyJ" /* J */:
                return this.changeStory(1 /* Next */);
            case "KeyK" /* K */:
                return this.changeStory(0 /* Previous */);
            case "BracketLeft" /* OpenBracket */:
                return this.changePage(0 /* Previous */);
            case "BracketRight" /* CloseBracket */:
                return this.changePage(1 /* Next */);
        }
        let story = this.story;
        if (story) {
            switch (e.code) {
                case "Enter" /* Enter */:
                    return story.open();
                case "KeyA" /* A */:
                    return story.author();
                case "KeyC" /* C */:
                    return story.comments();
                case "KeyD" /* D */:
                    return story.domain();
                case "KeyF" /* F */:
                    return story.flag();
                case "KeyH" /* H */:
                    return story.hide();
                case "KeyS" /* S */:
                    return story.save();
                case "KeyU" /* U */:
                    return story.upvote();
            }
        }
    }
    attachStyles(d) {
        let styles = d.createElement('style');
        styles.innerHTML = `.${Story.focusCls} { background-color: #fffcd799; }`;
        d.body.appendChild(styles);
    }
}
new LobstersKeyController(window.document);
 
 
/***/ })
/******/ ]);
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