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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/>.
*/
class Driver {
constructor() {
this.popup = new Popup();
this.popupTimer = null;
this.lastMousePos = null;
this.lastTextSource = null;
this.pendingLookup = false;
this.enabled = false;
this.options = null;
chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
window.addEventListener('mouseover', this.onMouseOver.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('resize', e => this.searchClear());
getOptions().then(opts => {
this.options = opts;
return isEnabled();
}).then(enabled => {
this.enabled = enabled;
});
}
popupTimerSet(callback) {
this.popupTimerClear();
this.popupTimer = window.setTimeout(callback, this.options.scanDelay);
}
popupTimerClear() {
if (this.popupTimer !== null) {
window.clearTimeout(this.popupTimer);
this.popupTimer = null;
}
}
onKeyDown(e) {
this.popupTimerClear();
if (this.enabled && this.lastMousePos !== null && e.keyCode === 16 /* shift */) {
this.searchAt(this.lastMousePos, true);
} else if (e.keyCode === 27 /* esc */) {
this.searchClear();
}
}
onMouseOver(e) {
if (e.target === this.popup.container && this.popuptimer !== null) {
this.popupTimerClear();
}
}
onMouseMove(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
this.popupTimerClear();
if (!this.enabled) {
return;
}
if (e.which === 1 /* lmb */) {
return;
}
if (this.options.holdShiftToScan && !e.shiftKey) {
return;
}
const searcher = () => this.searchAt(this.lastMousePos, false);
if (!this.popup.isVisible() || e.shiftKey || e.which === 2 /* mmb */) {
searcher();
} else {
this.popupTimerSet(searcher);
}
}
onMouseDown(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
this.popupTimerClear();
this.searchClear();
}
onBgMessage({action, params}, sender, callback) {
const method = this['api_' + action];
if (typeof(method) === 'function') {
method.call(this, params);
}
callback();
}
searchAt(point, hideNotFound) {
if (this.pendingLookup) {
return;
}
const textSource = textSourceFromPoint(point);
if (textSource === null || !textSource.containsPoint(point)) {
if (hideNotFound) {
this.searchClear();
}
return;
}
if (this.lastTextSource !== null && this.lastTextSource.equals(textSource)) {
return;
}
this.pendingLookup = true;
this.searchTerms(textSource).then(found => {
if (!found) {
this.searchKanji(textSource).then(found => {
if (!found && hideNotFound) {
this.searchClear();
}
});
}
}).catch(error => {
window.alert('Error: ' + error);
}).then(() => {
this.pendingLookup = false;
});
}
searchTerms(textSource) {
textSource.setEndOffset(this.options.scanLength);
return findTerm(textSource.text()).then(({definitions, length}) => {
if (definitions.length === 0) {
return false;
} else {
textSource.setEndOffset(length);
const sentence = extractSentence(textSource, this.options.sentenceExtent);
definitions.forEach(definition => {
definition.url = window.location.href;
definition.sentence = sentence;
});
this.popup.showNextTo(textSource.getRect());
this.popup.showTermDefs(definitions, this.options);
this.lastTextSource = textSource;
if (this.options.selectMatchedText) {
textSource.select();
}
return true;
}
}).catch(error => {
window.alert('Error: ' + error);
return false;
});
}
searchKanji(textSource) {
textSource.setEndOffset(1);
return findKanji(textSource.text()).then(definitions => {
if (definitions.length === 0) {
return false;
} else {
definitions.forEach(definition => definition.url = window.location.href);
this.popup.showNextTo(textSource.getRect());
this.popup.showKanjiDefs(definitions, this.options);
this.lastTextSource = textSource;
if (this.options.selectMatchedText) {
textSource.select();
}
return true;
}
}).catch(error => {
window.alert('Error: ' + error);
return false;
});
}
searchClear() {
this.popup.hide();
if (this.options.selectMatchedText && this.lastTextSource !== null) {
this.lastTextSource.deselect();
}
this.lastTextSource = null;
}
api_setOptions(opts) {
this.options = opts;
}
api_setEnabled(enabled) {
if (!(this.enabled = enabled)) {
this.searchClear();
}
}
}
window.driver = new Driver();
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