Added nav module

src/nav.js

@@ -0,0 +1,120 @@
+'use strict';
+const {webFrame} = require('electron');
+const {is} = require('./util');
+const settings = require('./settings');
+
+class Nav {
+  constructor() {
+    this._defaultZoomFactor = 1.0;
+    this._listItem = '.listItem';
+    this._lists = '.lists';
+    this._lowerZoomLimit = 0.7;
+    this._myDayList = '.todayToolbar-item';
+    this._selectedListItem = '.active';
+    this._upperZoomLimit = 1.3;
+    this._zoomStep = 0.05;
+  }
+
+  get _lastIdx() {
+    return this._getLists().length - 1;
+  }
+
+  _currentIdx() {
+    let currentIdx = 0;
+    const lists = this._getLists();
+    const selectedList = this.select(this._selectedListItem);
+
+    for (let i = 0; i < lists.length; i++) {
+      if (lists[i] === selectedList) {
+        currentIdx += i;
+      }
+    }
+
+    return currentIdx;
+  }
+
+  _getLists() {
+    const myDayList = this.select(this._myDayList);
+    return [myDayList, ...document.querySelector(this._lists).querySelectorAll(this._listItem)];
+  }
+
+  click(x) {
+    document.querySelector(x).click();
+  }
+
+  doubleClick(x) {
+    const doubleClicked = document.createEvent('MouseEvents');
+    doubleClicked.initEvent('dblclick', true, true);
+    const classToClick = document.querySelector(x);
+    classToClick.dispatchEvent(doubleClicked);
+  }
+
+  jumpToList(event) {
+    const comboKey = is.darwin ? event.metaKey : event.ctrlKey;
+
+    if (!comboKey) {
+      return null;
+    }
+
+    const n = parseInt(event.key, 10);
+
+    if (n > 0 && n < 10) {
+      this.selectList(n - 1);
+    }
+  }
+
+  sideBar() {
+    document.documentElement.classList.toggle('side-bar-hidden', settings.get('sideBarHidden'));
+  }
+
+  nextList() {
+    const idx = this._currentIdx();
+    this.selectList(idx === this._lastIdx ? 0 : idx + 1);
+  }
+
+  previousList() {
+    const idx = this._currentIdx();
+    return this.selectList(idx === 0 ? this._lastIdx : idx - 1);
+  }
+
+  select(x) {
+    return document.querySelector(x);
+  }
+
+  selectList(idx) {
+    if (idx >= 0 && idx <= this._lastIdx) {
+      const lists = this._getLists();
+      const {id, className} = lists[idx];
+      this.click(id ? `#${id}` : `.${className}`);
+    }
+  }
+
+  zoomIn() {
+    const zoomFactor = webFrame.getZoomFactor() + this._zoomStep;
+
+    if (zoomFactor < this._upperZoomLimit) {
+      webFrame.setZoomFactor(zoomFactor);
+      settings.set('zoomFactor', zoomFactor);
+    }
+  }
+
+  zoomReset() {
+    webFrame.setZoomFactor(this._defaultZoomFactor);
+    settings.set('zoomFactor', this._defaultZoomFactor);
+  }
+
+  zoomRestore() {
+    webFrame.setZoomFactor(settings.get('zoomFactor'));
+  }
+
+  zoomOut() {
+    const zoomFactor = webFrame.getZoomFactor() - this._zoomStep;
+
+    if (zoomFactor > this._lowerZoomLimit) {
+      webFrame.setZoomFactor(zoomFactor);
+      settings.set('zoomFactor', zoomFactor);
+    }
+  }
+}
+
+module.exports = new Nav();