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content.js
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/*
Zhongwen - A Chinese-English Pop-Up Dictionary
Copyright (C) 2010-2023 Christian Schiller
https://chrome.google.com/extensions/detail/kkmlkkjojmombglmlpbpapmhcaljjkde
---
Originally based on Rikaikun 0.8
Copyright (C) 2010 Erek Speed
http://code.google.com/p/rikaikun/
---
Originally based on Rikaichan 1.07
by Jonathan Zarate
http://www.polarcloud.com/
---
Originally based on RikaiXUL 0.4 by Todd Rudick
http://www.rikai.com/
http://rikaixul.mozdev.org/
---
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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
---
Please do not change or remove any of the copyrights or links to web pages
when modifying any of the files.
*/
/* global globalThis */
'use strict';
let config;
let savedTarget;
let savedRangeNode;
let savedRangeOffset;
let selText;
let clientX;
let clientY;
let selStartDelta;
let selStartIncrement;
let popX = 0;
let popY = 0;
let timer;
let altView = 0;
let savedSearchResults = [];
let savedSelStartOffset = 0;
let savedSelEndList = [];
let savedOriginalText;
// regular expression for zero-width non-joiner U+200C ‌
let zwnj = /\u200c/g;
function enableTab() {
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('keydown', onKeyDown);
}
function disableTab() {
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('keydown', onKeyDown);
let popup = document.getElementById('zhongwen-window');
if (popup) {
popup.parentNode.removeChild(popup);
}
clearHighlight();
}
function onKeyDown(keyDown) {
if (keyDown.ctrlKey || keyDown.metaKey) {
return;
}
if (keyDown.keyCode === 27) {
// esc key pressed
hidePopup();
return;
}
if (keyDown.altKey && keyDown.keyCode === 87) {
// Alt + w
chrome.runtime.sendMessage({
type: 'open',
tabType: 'wordlist',
url: '/wordlist.html'
});
return;
}
if (!isVisible()) {
return;
}
switch (keyDown.keyCode) {
case 67: // 'c'
copyToClipboard(getTextForClipboard());
break;
case 66: // 'b'
{
let offset = selStartDelta;
for (let i = 0; i < 10; i++) {
selStartDelta = --offset;
let ret = triggerSearch();
if (ret === 0) {
break;
} else if (ret === 2) {
savedRangeNode = findPreviousTextNode(savedRangeNode.parentNode, savedRangeNode);
savedRangeOffset = 0;
offset = savedRangeNode.data.length;
}
}
}
break;
case 71: // 'g'
if (config.grammar !== 'no' && savedSearchResults.grammar) {
let sel = encodeURIComponent(window.getSelection().toString());
// https://resources.allsetlearning.com/chinese/grammar/%E4%B8%AA
let allset = 'https://resources.allsetlearning.com/chinese/grammar/' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'grammar',
url: allset
});
}
break;
case 77: // 'm'
selStartIncrement = 1;
// falls through
case 78: // 'n'
for (let i = 0; i < 10; i++) {
selStartDelta += selStartIncrement;
let ret = triggerSearch();
if (ret === 0) {
break;
} else if (ret === 2) {
savedRangeNode = findNextTextNode(savedRangeNode.parentNode, savedRangeNode);
savedRangeOffset = 0;
selStartDelta = 0;
selStartIncrement = 0;
}
}
break;
case 82: // 'r'
{
let entries = [];
for (let j = 0; j < savedSearchResults.length; j++) {
let entry = {
simplified: savedSearchResults[j][0],
traditional: savedSearchResults[j][1],
pinyin: savedSearchResults[j][2],
definition: savedSearchResults[j][3]
};
entries.push(entry);
}
chrome.runtime.sendMessage({
'type': 'add',
'entries': entries
});
showPopup('Added to word list.<p>Press Alt+W to open word list.', null, -1, -1);
}
break;
case 84: // 't'
{
let sel = encodeURIComponent(
window.getSelection().toString());
// https://tatoeba.org/eng/sentences/search?from=cmn&to=eng&query=%E8%BF%9B%E8%A1%8C
let tatoeba = 'https://tatoeba.org/eng/sentences/search?from=cmn&to=eng&query=' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'tatoeba',
url: tatoeba
});
}
break;
case 86: // 'v'
if (config.vocab !== 'no' && savedSearchResults.vocab) {
let sel = encodeURIComponent(window.getSelection().toString());
// https://resources.allsetlearning.com/chinese/vocabulary/%E4%B8%AA
let allset = 'https://resources.allsetlearning.com/chinese/vocabulary/' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'vocab',
url: allset
});
}
break;
case 88: // 'x'
altView = 0;
popY -= 20;
triggerSearch();
break;
case 89: // 'y'
altView = 0;
popY += 20;
triggerSearch();
break;
case 49: // '1'
if (keyDown.altKey) {
// use the simplified character for linedict lookup
let simp = savedSearchResults[0][0];
// https://english.dict.naver.com/english-chinese-dictionary/#/search?query=%E8%AF%8D%E5%85%B8
let linedict = 'https://english.dict.naver.com/english-chinese-dictionary/#/search?query=' +
encodeURIComponent(simp);
chrome.runtime.sendMessage({
type: 'open',
tabType: 'linedict',
url: linedict
});
}
break;
case 50: // '2'
if (keyDown.altKey) {
let sel = encodeURIComponent(
window.getSelection().toString());
// https://forvo.com/search/%E4%B8%AD%E6%96%87/zh/
var forvo = 'https://forvo.com/search/' + sel + '/zh/';
chrome.runtime.sendMessage({
type: 'open',
tabType: 'forvo',
url: forvo
});
}
break;
case 51: // '3'
if (keyDown.altKey) {
let sel = encodeURIComponent(
window.getSelection().toString());
// https://dict.cn/%E7%BF%BB%E8%AF%91
let dictcn = 'https://dict.cn/' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'dictcn',
url: dictcn
});
}
break;
case 52: // '4'
if (keyDown.altKey) {
let sel = encodeURIComponent(
window.getSelection().toString());
// https://www.iciba.com/%E4%B8%AD%E9%A4%90
let iciba = 'https://www.iciba.com/' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'iciba',
url: iciba
});
}
break;
case 53: // '5'
if (keyDown.altKey) {
let sel = encodeURIComponent(
window.getSelection().toString());
// https://www.mdbg.net/chinese/dictionary?page=worddict&wdrst=0&wdqb=%E4%B8%AD%E6%96%87
let mdbg = 'https://www.mdbg.net/chinese/dictionary?page=worddict&wdrst=0&wdqb=' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'mdbg',
url: mdbg
});
}
break;
case 54: // '6'
if (keyDown.altKey) {
let sel = encodeURIComponent(
window.getSelection().toString());
let reverso = 'https://context.reverso.net/translation/chinese-english/' + sel;
chrome.runtime.sendMessage({
type: 'open',
tabType: 'reverso',
url: reverso
});
}
break;
case 55: // '7'
if (keyDown.altKey) {
// use the traditional character for moedict lookup
let trad = savedSearchResults[0][1];
// https://www.moedict.tw/~%E4%B8%AD%E6%96%87
let moedict = 'https://www.moedict.tw/~' + encodeURIComponent(trad);
chrome.runtime.sendMessage({
type: 'open',
tabType: 'moedict',
url: moedict
});
}
break;
default:
return;
}
}
function onMouseMove(mouseMove) {
if (mouseMove.target.nodeName === 'TEXTAREA' || mouseMove.target.nodeName === 'INPUT'
|| mouseMove.target.nodeName === 'DIV') {
let div = document.getElementById('zhongwenDiv');
if (mouseMove.altKey) {
if (!div && (mouseMove.target.nodeName === 'TEXTAREA' || mouseMove.target.nodeName === 'INPUT')) {
div = makeDiv(mouseMove.target);
document.body.appendChild(div);
div.scrollTop = mouseMove.target.scrollTop;
div.scrollLeft = mouseMove.target.scrollLeft;
}
} else {
if (div) {
document.body.removeChild(div);
}
}
}
if (clientX && clientY) {
if (mouseMove.clientX === clientX && mouseMove.clientY === clientY) {
return;
}
}
clientX = mouseMove.clientX;
clientY = mouseMove.clientY;
let range;
let rangeNode;
let rangeOffset;
// Handle Chrome and Firefox
if (document.caretRangeFromPoint) {
range = document.caretRangeFromPoint(mouseMove.clientX, mouseMove.clientY);
if (range === null) {
return;
}
rangeNode = range.startContainer;
rangeOffset = range.startOffset;
} else if (document.caretPositionFromPoint) {
range = document.caretPositionFromPoint(mouseMove.clientX, mouseMove.clientY);
if (range === null) {
return;
}
rangeNode = range.offsetNode;
rangeOffset = range.offset;
}
if (!rangeNode) return;
if (mouseMove.target === savedTarget) {
if (rangeNode === savedRangeNode && rangeOffset === savedRangeOffset) {
return;
}
}
if (timer) {
clearTimeout(timer);
timer = null;
}
let r = document.createRange();
r.selectNode(rangeNode);
let rects = r.getClientRects();
if (rects.length > 0) {
let mouseInTheRect = false;
for (let i = 0; i < rects.length; i++) {
let rect = rects[i];
let s = 5; // sensitivity
mouseInTheRect =
clientX + s >= rect.left && clientY + s >= rect.top &&
clientX <= rect.left + rect.width + s && clientY <= rect.top + rect.height + s;
if (mouseInTheRect) break;
}
if (!mouseInTheRect) {
// Toggle this code for debugging purpose
// if (mouseMove.altKey) {
// for (let i = 0; i < rects.length; i++) {
// var div = document.createElement('div');
// div.style.position = 'fixed';
// div.style.top = rects[i].top + 'px';
// div.style.left = rects[i].left + 'px';
// div.style.width = rects[i].width + 'px';
// div.style.height = rects[i].height + 'px';
// div.style.border = '1px solid ' + ["red", "blue", "green", "yellow", "black"][i];
// div.style.backgroundColor = 'transparent';
// document.body.appendChild(div);
// }
// var div = document.createElement('div');
// div.style.position = 'fixed';
// div.style.top = clientY + 'px';
// div.style.left = clientX + 'px';
// div.style.width = '5px';
// div.style.height = '5px';
// div.style.border = '1px solid orange';
// div.style.backgroundColor = 'transparent';
// document.body.appendChild(div);
// console.log(mouseMove);
// console.log(rects);
// console.log(rangeNode);
// console.log(range);
// }
rangeNode = null;
rangeOffset = -1;
}
}
savedTarget = mouseMove.target;
savedRangeNode = rangeNode;
savedRangeOffset = rangeOffset;
selStartDelta = 0;
selStartIncrement = 1;
if (rangeNode && rangeNode.data && rangeOffset < rangeNode.data.length) {
popX = mouseMove.clientX;
popY = mouseMove.clientY;
timer = setTimeout(() => triggerSearch(), 50);
return;
}
// Don't close just because we moved from a valid pop-up slightly over to a place with nothing.
let dx = popX - mouseMove.clientX;
let dy = popY - mouseMove.clientY;
let distance = Math.sqrt(dx * dx + dy * dy);
if (distance > 4) {
clearHighlight();
hidePopup();
}
}
function triggerSearch() {
let rangeNode = savedRangeNode;
let selStartOffset = savedRangeOffset + selStartDelta;
selStartIncrement = 1;
if (!rangeNode) {
clearHighlight();
hidePopup();
return 1;
}
if (selStartOffset < 0 || rangeNode.data.length <= selStartOffset) {
clearHighlight();
hidePopup();
return 2;
}
let u = rangeNode.data.charCodeAt(selStartOffset);
let isChineseCharacter = !isNaN(u) && (
u === 0x25CB ||
(0x3400 <= u && u <= 0x9FFF) ||
(0xF900 <= u && u <= 0xFAFF) ||
(0xFF21 <= u && u <= 0xFF3A) ||
(0xFF41 <= u && u <= 0xFF5A) ||
(0xD800 <= u && u <= 0xDFFF)
);
if (!isChineseCharacter) {
clearHighlight();
hidePopup();
return 3;
}
let selEndList = [];
let originalText = getText(rangeNode, selStartOffset, selEndList, 30 /*maxlength*/);
// Workaround for Google Docs: remove zero-width non-joiner ‌
let text = originalText.replace(zwnj, '');
savedSelStartOffset = selStartOffset;
savedSelEndList = selEndList;
chrome.runtime.sendMessage({
'type': 'search',
'text': text,
'originalText': originalText
},
processSearchResult
);
return 0;
}
function processSearchResult(result) {
let selStartOffset = savedSelStartOffset;
let selEndList = savedSelEndList;
if (!result) {
hidePopup();
clearHighlight();
return;
}
let highlightLength;
let index = 0;
for (let i = 0; i < result.matchLen; i++) {
// Google Docs workaround: determine the correct highlight length
while (result.originalText[index] === '\u200c') {
index++;
}
index++;
}
highlightLength = index;
selStartIncrement = result.matchLen;
selStartDelta = (selStartOffset - savedRangeOffset);
savedOriginalText = result.originalText
.split("\n")[0]
.split("。")[0]
.split("？")[0]
.split("！")[0]
.split("；")[0]
.split("：")[0]
.split(".")[0]
.trim();
let rangeNode = savedRangeNode;
// don't try to highlight form elements
if (!('form' in savedTarget)) {
let doc = rangeNode.ownerDocument;
if (!doc) {
clearHighlight();
hidePopup();
return;
}
highlightMatch(doc, rangeNode, selStartOffset, highlightLength, selEndList);
}
showPopup(makeHtml(result, config.tonecolors !== 'no'), savedTarget, popX, popY, false);
}
// modifies selEndList as a side-effect
function getText(startNode, offset, selEndList, maxLength) {
let text = '';
let endIndex;
if (startNode.nodeType !== Node.TEXT_NODE) {
return '';
}
endIndex = Math.min(startNode.data.length, offset + maxLength);
text += startNode.data.substring(offset, endIndex);
selEndList.push({
node: startNode,
offset: endIndex
});
let nextNode = startNode;
while ((text.length < maxLength) && ((nextNode = findNextTextNode(nextNode.parentNode, nextNode)) !== null)) {
text += getTextFromSingleNode(nextNode, selEndList, maxLength - text.length);
}
return text;
}
// modifies selEndList as a side-effect
function getTextFromSingleNode(node, selEndList, maxLength) {
let endIndex;
if (node.nodeName === '#text') {
endIndex = Math.min(maxLength, node.data.length);
selEndList.push({
node: node,
offset: endIndex
});
return node.data.substring(0, endIndex);
} else {
return '';
}
}
function showPopup(html, elem, x, y, looseWidth) {
if (!x || !y) {
x = y = 0;
}
let popup = document.getElementById('zhongwen-window');
if (!popup) {
popup = document.createElement('div');
popup.setAttribute('id', 'zhongwen-window');
document.documentElement.appendChild(popup);
}
popup.style.width = 'auto';
popup.style.height = 'auto';
popup.style.maxWidth = (looseWidth ? '' : '600px');
popup.className = `background-${config.css} tonecolor-${config.toneColorScheme}`;
$(popup).html(html);
if (elem) {
popup.style.top = '-1000px';
popup.style.left = '0px';
popup.style.display = '';
let pW = popup.offsetWidth;
let pH = popup.offsetHeight;
if (pW <= 0) {
pW = 200;
}
if (pH <= 0) {
pH = 0;
let j = 0;
while ((j = html.indexOf('<br/>', j)) !== -1) {
j += 5;
pH += 22;
}
pH += 25;
}
if (altView === 1) {
x = window.scrollX;
y = window.scrollY;
} else if (altView === 2) {
x = (window.innerWidth - (pW + 20)) + window.scrollX;
y = (window.innerHeight - (pH + 20)) + window.scrollY;
} else if (elem instanceof window.HTMLOptionElement) {
x = 0;
y = 0;
let p = elem;
while (p) {
x += p.offsetLeft;
y += p.offsetTop;
p = p.offsetParent;
}
if (elem.offsetTop > elem.parentNode.clientHeight) {
y -= elem.offsetTop;
}
if (x + popup.offsetWidth > window.innerWidth) {
// too much to the right, go left
x -= popup.offsetWidth + 5;
if (x < 0) {
x = 0;
}
} else {
// use SELECT's width
x += elem.parentNode.offsetWidth + 5;
}
} else {
// go left if necessary
if (x + pW > window.innerWidth - 20) {
x = (window.innerWidth - pW) - 20;
if (x < 0) {
x = 0;
}
}
// below the mouse
let v = 25;
// go up if necessary
if (y + v + pH > window.innerHeight) {
let t = y - pH - 30;
if (t >= 0) {
y = t;
}
} else {
y += v;
}
x += window.scrollX;
y += window.scrollY;
}
} else {
x += window.scrollX;
y += window.scrollY;
}
// (-1, -1) indicates: leave position unchanged
if (x !== -1 && y !== -1) {
popup.style.left = x + 'px';
popup.style.top = y + 'px';
popup.style.display = '';
}
}
function hidePopup() {
let popup = document.getElementById('zhongwen-window');
if (popup) {
popup.style.display = 'none';
popup.textContent = '';
}
}
function highlightMatch(doc, rangeStartNode, rangeStartOffset, matchLen, selEndList) {
if (!selEndList || selEndList.length === 0) return;
let selEnd;
let offset = rangeStartOffset + matchLen;
for (let i = 0, len = selEndList.length; i < len; i++) {
selEnd = selEndList[i];
if (offset <= selEnd.offset) {
break;
}
offset -= selEnd.offset;
}
let range = doc.createRange();
range.setStart(rangeStartNode, rangeStartOffset);
range.setEnd(selEnd.node, offset);
let sel = window.getSelection();
if (!sel.isCollapsed && selText !== sel.toString())
return;
sel.empty();
sel.addRange(range);
selText = sel.toString();
}
function clearHighlight() {
if (selText === null) {
return;
}
let selection = window.getSelection();
if (selection.isCollapsed || selText === selection.toString()) {
selection.empty();
}
selText = null;
}
function isVisible() {
let popup = document.getElementById('zhongwen-window');
return popup && popup.style.display !== 'none';
}
function getTextForClipboard() {
// NOTE: return the original text instead of translation results
return savedOriginalText;
}
function makeDiv(input) {
let div = document.createElement('div');
div.id = 'zhongwenDiv';
let text;
if (input.value) {
text = input.value;
} else {
text = '';
}
div.innerText = text;
div.style.cssText = window.getComputedStyle(input, '').cssText;
div.scrollTop = input.scrollTop;
div.scrollLeft = input.scrollLeft;
div.style.position = 'absolute';
div.style.zIndex = 7000;
$(div).offset({
top: $(input).offset().top,
left: $(input).offset().left
});
return div;
}
function findNextTextNode(root, previous) {
if (root === null) {
return null;
}
let nodeIterator = document.createNodeIterator(root, NodeFilter.SHOW_TEXT, null);
let node = nodeIterator.nextNode();
while (node !== previous) {
node = nodeIterator.nextNode();
if (node === null) {
return findNextTextNode(root.parentNode, previous);
}
}
let result = nodeIterator.nextNode();
if (result !== null) {
return result;
} else {
return findNextTextNode(root.parentNode, previous);
}
}
function findPreviousTextNode(root, previous) {
if (root === null) {
return null;
}
let nodeIterator = document.createNodeIterator(root, NodeFilter.SHOW_TEXT, null);
let node = nodeIterator.nextNode();
while (node !== previous) {
node = nodeIterator.nextNode();
if (node === null) {
return findPreviousTextNode(root.parentNode, previous);
}
}
nodeIterator.previousNode();
let result = nodeIterator.previousNode();
if (result !== null) {
return result;
} else {
return findPreviousTextNode(root.parentNode, previous);
}
}
function copyToClipboard(data) {
chrome.runtime.sendMessage({
'type': 'copy',
'data': data
});
showPopup('Copied to clipboard', null, -1, -1);
}
function makeHtml(result, showToneColors) {
let entry;
let html = '';
let texts = [];
let hanziClass;
if (result === null) return '';
for (let i = 0; i < result.data.length; ++i) {
entry = result.data[i][0].match(/^([^\s]+?)\s+([^\s]+?)\s+\[(.*?)\]?\s*\/(.+)\//);
if (!entry) continue;
// Hanzi
if (config.simpTrad === 'auto') {
let word = result.data[i][1];
hanziClass = 'w-hanzi';
if (config.fontSize === 'small') {
hanziClass += '-small';
}
html += '<span class="' + hanziClass + '">' + word + '</span> ';
} else {
hanziClass = 'w-hanzi';
if (config.fontSize === 'small') {
hanziClass += '-small';
}
html += '<span class="' + hanziClass + '">' + entry[2] + '</span> ';
if (entry[1] !== entry[2]) {
html += '<span class="' + hanziClass + '">' + entry[1] + '</span> ';
}
}
// Pinyin
let pinyinClass = 'w-pinyin';
if (config.fontSize === 'small') {
pinyinClass += '-small';
}
let p = pinyinAndZhuyin(entry[3], showToneColors, pinyinClass);
html += p[0];
// Zhuyin
if (config.zhuyin === 'yes') {
html += '<br>' + p[2];
}
// Definition
let defClass = 'w-def';
if (config.fontSize === 'small') {
defClass += '-small';
}
let translation = entry[4].replace(/\//g, ' ◆ ');
html += '<br><span class="' + defClass + '">' + translation + '</span><br>';
let addFinalBr = false;
// Grammar
if (config.grammar !== 'no' && result.grammar && result.grammar.index === i) {
html += '<br><span class="grammar">Press "g" for grammar and usage notes.</span><br>';
addFinalBr = true;
}
// Vocab
if (config.vocab !== 'no' && result.vocab && result.vocab.index === i) {
html += '<br><span class="vocab">Press "v" for vocabulary notes.</span><br>';
addFinalBr = true;
}
if (addFinalBr) {
html += '<br>';
}
texts[i] = [entry[2], entry[1], p[1], translation, entry[3]];
}
if (result.more) {
html += '…<br/>';
}
savedSearchResults = texts;
savedSearchResults.grammar = result.grammar;
savedSearchResults.vocab = result.vocab;
return html;
}
let tones = {
1: '̄',
2: '́',
3: '̌',
4: '̀',
5: ''
};
let utones = {
1: '\u0304',
2: '\u0301',
3: '\u030C',
4: '\u0300',
5: ''