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-rw-r--r--ext/fg/js/frontend.js249
1 files changed, 249 insertions, 0 deletions
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
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+++ b/ext/fg/js/frontend.js
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+/*
+ * 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/>.
+ */
+
+
+window.frontend = new class {
+ constructor() {
+ this.popup = new Popup();
+ this.popupTimer = null;
+ this.lastMousePos = null;
+ this.mouseDownLeft = false;
+ this.mouseDownMiddle = false;
+ this.lastTextSource = null;
+ this.pendingLookup = false;
+ this.options = null;
+
+ bgOptionsGet().then(options => {
+ this.options = options;
+ window.addEventListener('mouseover', this.onMouseOver.bind(this));
+ window.addEventListener('mousedown', this.onMouseDown.bind(this));
+ window.addEventListener('mouseup', this.onMouseUp.bind(this));
+ window.addEventListener('mousemove', this.onMouseMove.bind(this));
+ window.addEventListener('resize', e => this.searchClear());
+ window.addEventListener('message', this.onFrameMessage.bind(this));
+ chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
+ }).catch(this.handleError.bind(this));
+ }
+
+ popupTimerSet(callback) {
+ this.popupTimerClear();
+ this.popupTimer = window.setTimeout(callback, this.options.scanning.delay);
+ }
+
+ popupTimerClear() {
+ if (this.popupTimer) {
+ window.clearTimeout(this.popupTimer);
+ this.popupTimer = null;
+ }
+ }
+
+ onMouseOver(e) {
+ if (e.target === this.popup.container && this.popupTimer) {
+ this.popupTimerClear();
+ }
+ }
+
+ onMouseMove(e) {
+ this.lastMousePos = {x: e.clientX, y: e.clientY};
+ this.popupTimerClear();
+
+ if (!this.options.general.enable) {
+ return;
+ }
+
+ if (this.mouseDownLeft) {
+ 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 searchFunc = () => this.searchAt(this.lastMousePos);
+ if (this.options.scanning.modifier === 'none') {
+ this.popupTimerSet(searchFunc);
+ } else {
+ searchFunc();
+ }
+ }
+
+ onMouseDown(e) {
+ this.lastMousePos = {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();
+ }
+ }
+
+ 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();
+ }
+
+ searchAt(point) {
+ if (this.pendingLookup) {
+ return;
+ }
+
+ const textSource = docRangeFromPoint(point);
+ if (!textSource || !textSource.containsPoint(point)) {
+ docImposterDestroy();
+ return;
+ }
+
+ if (this.lastTextSource && this.lastTextSource.equals(textSource)) {
+ return;
+ }
+
+ this.pendingLookup = true;
+ this.searchTerms(textSource).then(found => {
+ if (!found) {
+ return this.searchKanji(textSource);
+ }
+ }).catch(error => {
+ this.handleError(error, textSource);
+ }).then(() => {
+ docImposterDestroy();
+ this.pendingLookup = false;
+ });
+ }
+
+ searchTerms(textSource) {
+ textSource.setEndOffset(this.options.scanning.length);
+
+ return bgTermsFind(textSource.text()).then(({definitions, length}) => {
+ if (definitions.length === 0) {
+ return false;
+ } else {
+ textSource.setEndOffset(length);
+
+ const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+ const url = window.location.href;
+ this.popup.showTermDefs(
+ textSource.getRect(),
+ definitions,
+ this.options,
+ {sentence, url}
+ );
+
+ this.lastTextSource = textSource;
+ if (this.options.scanning.selectText) {
+ textSource.select();
+ }
+
+ return true;
+ }
+ });
+ }
+
+ searchKanji(textSource) {
+ textSource.setEndOffset(1);
+
+ return bgKanjiFind(textSource.text()).then(definitions => {
+ if (definitions.length === 0) {
+ return false;
+ } else {
+ const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
+ const url = window.location.href;
+ this.popup.showKanjiDefs(
+ textSource.getRect(),
+ definitions,
+ this.options,
+ {sentence, url}
+ );
+
+ this.lastTextSource = textSource;
+ if (this.options.scanning.selectText) {
+ textSource.select();
+ }
+
+ return true;
+ }
+ });
+ }
+
+ searchClear() {
+ docImposterDestroy();
+ this.popup.hide();
+
+ if (this.options.scanning.selectText && this.lastTextSource) {
+ this.lastTextSource.deselect();
+ }
+
+ this.lastTextSource = null;
+ }
+
+ handleError(error, textSource) {
+ if (window.orphaned) {
+ if (textSource && this.options.scanning.modifier !== 'none') {
+ this.popup.showOrphaned(textSource.getRect(), this.options);
+ }
+ } else {
+ window.alert(`Error: ${error}`);
+ }
+ }
+};