content-script.js

/*
    https://addons.mozilla.org/en-US/firefox/search/?q=page+scroll&appver=&platform=linux
    后面还可以增加 1 自动卷屏的指令， 2 同步配置，导入导出配置， 3 按站点改为按url控制粒度更细，4 增加个禁用按钮
*/
document.addEventListener('keypress', function (e) {
    if (document.activeElement.tagName=="INPUT" || document.activeElement.tagName=="TEXTAREA") {
        return;
    }
  browser.storage.local.get('wasd-enabled').then( enabled => {
    let _enabled = true;;
    if (enabled.hasOwnProperty('wasd-enabled')) {
        _enabled = enabled['wasd-enabled'] ? true:false;
    } else if (enabled.hasOwnProperty(0) && enabled[0].hasOwnProperty('wasd-enabled')) {
        _enabled = enabled[0]['wasd-enabled'] ? true:false;
    }
    if (!_enabled) {
        return;
    }

    let keyName = e.key.toUpperCase();
    
    let gotoNext = true;
    let gotoHome = false;
    let gotoEnd = false;
    let gotoPageup = false;
    let gotoPagedown = false;
    
    if (['A','D','S','W','Q','E'].indexOf(keyName)<0) {
        return;
    } else {
        if (keyName === 'A') {
            gotoNext = false;
        } else if (keyName === 'D') {
            gotoNext = true;
        } else if (keyName === 'W') {
            gotoPageup = true;
            window.scrollByPages(-1);
            return;
        } else if (keyName === 'S') {
            gotoPagedown = true;
            window.scrollByPages(1);
            return;
        } else if (keyName === 'E') {
            gotoEnd = true;
            window.scroll(document.documentElement.scrollLeft,document.documentElement.scrollHeight);
            return;
        } else if (keyName === 'Q') {
            gotoHome = true;
            window.scroll(document.documentElement.scrollLeft,0);
            return;
        }
    }

    browser.storage.local.get('sites').then( sites_query => {
        let sites;
        if (sites_query.hasOwnProperty('sites')) {
            sites = sites_query['sites'].split(',');
        } else if (sites_query.hasOwnProperty(0) && sites_query[0].hasOwnProperty('sites')) {
            sites = sites_query[0]['sites'].split(',');
        } else {
            return;
        }
        let site_tag;
        for (site in sites) {
            let patt = new RegExp(sites[site]);
            if (patt.test(document.location.host)) {
                site_tag = sites[site];
                break;
            }
        }
        if (site_tag !== undefined) {
            let tag = site_tag+(gotoNext?"#next":"#pre");
            
            browser.storage.local.get(tag).then(result=>{
                let ele;
                if (result.hasOwnProperty(tag)) {
                    ele = result[tag];
                } else if (result.hasOwnProperty(0) && result[0].hasOwnProperty(tag)) {
                    ele = result[0][tag];
                } else {
                    return;
                }
                document.querySelector(ele).click();
            }, error => {
              console.log(`WASD Pager Error: ${error}`);
            });
        }
    });
  });
}, true);