yomichan/ext/fg/js/client.js
2016-05-07 13:43:32 -07:00

198 lines
6.3 KiB
JavaScript

/*
* Copyright (C) 2016 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 Client {
constructor() {
this.popup = new Popup();
this.lastMousePos = null;
this.lastRange = null;
this.activateKey = 16;
this.activateBtn = 2;
this.enabled = false;
this.options = {};
this.definitions = null;
this.sequence = 0;
this.fgRoot = chrome.extension.getURL('fg');
chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
window.addEventListener('message', this.onFrameMessage.bind(this));
window.addEventListener('mousedown', this.onMouseDown.bind(this));
window.addEventListener('mousemove', this.onMouseMove.bind(this));
window.addEventListener('keydown', this.onKeyDown.bind(this));
window.addEventListener('scroll', (e) => this.hidePopup());
window.addEventListener('resize', (e) => this.hidePopup());
bgGetOptions((opts) => {
this.setOptions(opts);
bgGetState((state) => this.setEnabled(state === 'enabled'));
});
}
onKeyDown(e) {
if (this.enabled && this.lastMousePos !== null && (e.keyCode === this.activateKey || e.charCode === this.activateKey)) {
this.searchAt(this.lastMousePos);
}
}
onMouseMove(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
this.searchAt(this.lastMousePos);
}
}
onMouseDown(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
this.searchAt(this.lastMousePos);
} else {
this.hidePopup();
}
}
onBgMessage({name, value}, sender, callback) {
switch (name) {
case 'state':
this.setEnabled(value === 'enabled');
break;
case 'options':
this.setOptions(value);
break;
}
callback();
}
onFrameMessage(e) {
const {action, params} = e.data, handlers = {
addNote: ({mode, index}) => this.actionAddNote(mode, index, (data) => e.source.postMessage(data, e.origin)),
displayKanji: this.actionDisplayKanji
};
if (handlers.hasOwnProperty(action)) {
handlers[action].call(this, params);
}
}
searchAt(point) {
const range = Range.fromPoint(point);
if (range === null || !range.containsPoint(point)) {
this.hidePopup();
return;
}
if (this.lastRange !== null && this.lastRange.compareOrigin(range) === 0) {
return;
}
range.setLength(this.options.scanLength);
bgFindTerm(range.text(), ({definitions, length}) => {
if (length === 0) {
this.hidePopup();
} else {
const sequence = ++this.sequence;
range.setLength(length);
bgRenderText(
{defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
'term-list.html',
(content) => {
this.definitions = definitions;
this.showPopup(range, content);
bgCanAddNotes(definitions, ['vocabExp', 'vocabReading'], (states) => {
if (states !== null) {
states.forEach((state, index) => this.popup.sendMessage(
'setActionState',
{index: index, state: state, sequence: sequence}
));
}
});
}
);
}
});
}
actionAddNote(mode, index, callback) {
const state = {};
state[mode] = false;
this.popup.sendMessage(
'setActionState',
{index: index, state: state, sequence: this.sequence}
);
}
actionDisplayKanji(kanji) {
bgFindKanji(kanji, (definitions) => {
const sequence = ++this.sequence;
bgRenderText(
{defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
'kanji-list.html',
(content) => {
this.definitions = definitions;
this.popup.setContent(content, definitions);
bgCanAddNotes(definitions, ['kanji'], (states) => {
if (states !== null) {
states.forEach((state, index) => this.popup.sendMessage(
'setActionState',
{index: index, state: state, sequence: sequence}
));
}
});
}
);
});
}
showPopup(range, content) {
this.popup.showNextTo(range.getRect(), content);
if (this.options.selectMatchedText) {
range.select();
}
this.lastRange = range;
}
hidePopup() {
this.popup.hide();
if (this.options.selectMatchedText && this.lastRange !== null) {
this.lastRange.deselect();
}
this.lastRange = null;
this.definitions = null;
}
setEnabled(enabled) {
if (!(this.enabled = enabled)) {
this.hidePopup();
}
}
setOptions(opts) {
this.options = opts;
}
}
window.yomiClient = new Client();