117 lines
2.7 KiB
JavaScript
117 lines
2.7 KiB
JavaScript
// Copyright 2017; Licensed under the Apache License, Version 2.0: https://www.apache.org/licenses/LICENSE-2.0
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'use strict';
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// updated by a timer looping function, based on local storage set by the options page
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// we only use a tiny number of settings here
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let settings = {
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reader_reverse: false,
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reader_leeway: 200
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};
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async function settings_init()
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{
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try
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{
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async function getvar(name, defval)
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{
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let temp = (await browser.storage.local.get(name))[name];
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if(temp == undefined)
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temp = defval;
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settings[name] = temp;
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}
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getvar("reader_reverse", false);
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getvar("reader_leeway", 200);
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} catch(err) {} // options not stored yet
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}
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settings_init();
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browser.storage.onChanged.addListener((updates, storageArea) =>
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{
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if(storageArea != "local") return;
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for(let setting of Object.entries(updates))
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{
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let option = setting[0];
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let value = setting[1];
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if(Object.keys(settings).includes(option))
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settings[option] = value.newValue;
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}
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});
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// actual reder code
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function might_have_japanese(text)
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{
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for(let char of text)
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if(char && char.length > 0 && char.codePointAt(0) >= 0x2E80)
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return true;
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return false;
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}
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function update(text)
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{
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if(!might_have_japanese(text))
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return;
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let target = document.body;
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let newnode = document.createElement("p");
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newnode.textContent = text;
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if(!settings.reader_reverse)
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target.insertBefore(newnode, document.body.firstChild);
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else
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{
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target.appendChild(newnode);
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if(settings.reader_leeway != 0)
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{
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let scroll_end_distance = -document.body.scrollHeight + -document.body.clientHeight + 2*document.body.offsetHeight - document.body.scrollTop;
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if (scroll_end_distance < settings.reader_leeway)
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window.scrollTo(0, document.body.scrollHeight);
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}
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}
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document.getElementById("linecount").innerText = parseInt(document.getElementById("linecount").innerText)+1;
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}
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let text_previous = "";
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function cycle_text(text)
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{
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if(text != "" && text != text_previous)
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update(text);
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text_previous = text;
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}
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function gimmetext()
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{
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browser.runtime.sendMessage({type:"gimmetext"});
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}
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let interval = 250;
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async function checkpaste()
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{
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try
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{
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let text = await gimmetext();
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cycle_text(text);
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}
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catch(error){}
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setTimeout(checkpaste, interval);
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}
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setTimeout(checkpaste, interval);
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var executing = browser.tabs.executeScript({
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file: "/texthook.js",
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allFrames: true
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});
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browser.runtime.onMessage.addListener((req, sender, sendResponse) =>
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{
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if (req.type == "text")
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cycle_text(req.text);
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});
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