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-rw-r--r--ext/fg/js/frontend.js273
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diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
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+/*
+ * Copyright (C) 2016-2017 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 Frontend {
+ constructor() {
+ this.popup = new Popup();
+ this.popupTimer = null;
+ this.mouseDownLeft = false;
+ this.mouseDownMiddle = false;
+ this.textSourceLast = null;
+ this.pendingLookup = false;
+ this.options = null;
+ }
+
+ async prepare() {
+ try {
+ this.options = await apiOptionsGet();
+
+ window.addEventListener('message', this.onFrameMessage.bind(this));
+ window.addEventListener('mousedown', this.onMouseDown.bind(this));
+ window.addEventListener('mousemove', this.onMouseMove.bind(this));
+ window.addEventListener('mouseover', this.onMouseOver.bind(this));
+ window.addEventListener('mouseup', this.onMouseUp.bind(this));
+ window.addEventListener('resize', this.onResize.bind(this));
+
+ chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
+ } catch (e) {
+ this.onError(e);
+ }
+ }
+
+ onMouseOver(e) {
+ if (e.target === this.popup.container && this.popupTimer) {
+ this.popupTimerClear();
+ }
+ }
+
+ onMouseMove(e) {
+ this.popupTimerClear();
+
+ if (!this.options.general.enable) {
+ return;
+ }
+
+ if (this.mouseDownLeft) {
+ return;
+ }
+
+ if (this.pendingLookup) {
+ return;
+ }
+
+ const mouseScan = this.mouseDownMiddle && this.options.scanning.middleMouse;
+ const keyScan =
+ this.options.scanning.modifier === 'alt' && e.altKey ||
+ this.options.scanning.modifier === 'ctrl' && e.ctrlKey ||
+ this.options.scanning.modifier === 'shift' && e.shiftKey ||
+ this.options.scanning.modifier === 'none';
+
+ if (!keyScan && !mouseScan) {
+ return;
+ }
+
+ const search = async () => {
+ try {
+ await this.searchAt({x: e.clientX, y: e.clientY});
+ this.pendingLookup = false;
+ } catch (e) {
+ this.onError(e);
+ }
+ };
+
+ if (this.options.scanning.modifier === 'none') {
+ this.popupTimerSet(search);
+ } else {
+ search();
+ }
+ }
+
+ onMouseDown(e) {
+ this.mousePosLast = {x: e.clientX, y: e.clientY};
+ this.popupTimerClear();
+ this.searchClear();
+
+ if (e.which === 1) {
+ this.mouseDownLeft = true;
+ } else if (e.which === 2) {
+ this.mouseDownMiddle = true;
+ }
+ }
+
+ onMouseUp(e) {
+ if (e.which === 1) {
+ this.mouseDownLeft = false;
+ } else if (e.which === 2) {
+ this.mouseDownMiddle = false;
+ }
+ }
+
+ onFrameMessage(e) {
+ const handlers = {
+ popupClose: () => {
+ this.searchClear();
+ },
+
+ selectionCopy: () => {
+ document.execCommand('copy');
+ }
+ };
+
+ const handler = handlers[e.data];
+ if (handler) {
+ handler();
+ }
+ }
+
+ onResize() {
+ this.searchClear();
+ }
+
+ onBgMessage({action, params}, sender, callback) {
+ const handlers = {
+ optionsSet: options => {
+ this.options = options;
+ if (!this.options.enable) {
+ this.searchClear();
+ }
+ }
+ };
+
+ const handler = handlers[action];
+ if (handler) {
+ handler(params);
+ }
+
+ callback();
+ }
+
+ onError(error) {
+ window.alert(`Error: ${error}`);
+ }
+
+ popupTimerSet(callback) {
+ this.popupTimerClear();
+ this.popupTimer = window.setTimeout(callback, this.options.scanning.delay);
+ }
+
+ popupTimerClear() {
+ if (this.popupTimer) {
+ window.clearTimeout(this.popupTimer);
+ this.popupTimer = null;
+ }
+ }
+
+ async searchAt(point) {
+ let textSource = null;
+
+ try {
+ if (this.pendingLookup) {
+ return;
+ }
+
+ textSource = docRangeFromPoint(point);
+ if (!textSource || !textSource.containsPoint(point)) {
+ docImposterDestroy();
+ return;
+ }
+
+ if (this.textSourceLast && this.textSourceLast.equals(textSource)) {
+ return;
+ }
+
+ this.pendingLookup = true;
+
+ if (!await this.searchTerms(textSource)) {
+ await this.searchKanji(textSource);
+ }
+ } catch (e) {
+ if (window.yomichan_orphaned) {
+ if (textSource && this.options.scanning.modifier !== 'none') {
+ this.popup.showOrphaned(textSource.getRect(), this.options);
+ }
+ } else {
+ this.onError(e);
+ }
+ } finally {
+ docImposterDestroy();
+ this.pendingLookup = false;
+ }
+ }
+
+ async searchTerms(textSource) {
+ textSource.setEndOffset(this.options.scanning.length);
+
+ const {definitions, length} = await apiTermsFind(textSource.text());
+ if (definitions.length === 0) {
+ return false;
+ }
+
+ textSource.setEndOffset(length);
+
+ const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+ const url = window.location.href;
+ this.popup.termsShow(
+ textSource.getRect(),
+ definitions,
+ this.options,
+ {sentence, url}
+ );
+
+ this.textSourceLast = textSource;
+ if (this.options.scanning.selectText) {
+ textSource.select();
+ }
+
+ return true;
+ }
+
+ async searchKanji(textSource) {
+ textSource.setEndOffset(1);
+
+ const definitions = await apiKanjiFind(textSource.text());
+ if (definitions.length === 0) {
+ return false;
+ }
+
+ const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+ const url = window.location.href;
+ this.popup.kanjiShow(
+ textSource.getRect(),
+ definitions,
+ this.options,
+ {sentence, url}
+ );
+
+ this.textSourceLast = textSource;
+ if (this.options.scanning.selectText) {
+ textSource.select();
+ }
+
+ return true;
+ }
+
+ searchClear() {
+ docImposterDestroy();
+ this.popup.hide();
+
+ if (this.options.scanning.selectText && this.textSourceLast) {
+ this.textSourceLast.deselect();
+ }
+
+ this.textSourceLast = null;
+ }
+}
+
+window.yomichan_frontend = new Frontend();
+window.yomichan_frontend.prepare();