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Thomas Brouard
parent
52e2ede9bd
commit
5e7928e5bb
10 changed files with 2678 additions and 889 deletions
486
src/index.js
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486
src/index.js
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import styles from "./style.inline.css";
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if (!document) {
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throw Error("electron-tabs module must be called in renderer process");
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}
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class TabGroup extends HTMLElement {
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constructor () {
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super();
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// Options
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this.options = {
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closeButtonText: this.getAttribute("close-button-text") || "×",
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newTabButtonText: this.getAttribute("new-tab-button-text") || "＋",
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visibilityThreshold: this.getAttribute("visibility-threshold") || 0,
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tabClass: this.getAttribute("tab-class") || "etabs-tab",
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viewClass: this.getAttribute("view-class") || "etabs-view"
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// TODO: replace this callback
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// ready: args.ready
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};
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// Create custom element
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const shadow = this.attachShadow({mode: "open"});
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const wrapper = document.createElement("div");
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wrapper.setAttribute("class", "etabs");
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const tabgroup = document.createElement("div");
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tabgroup.setAttribute("class", "etabs-tabgroup");
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wrapper.appendChild(tabgroup);
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const tabContainer = document.createElement("div");
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tabContainer.setAttribute("class", "etabs-tabs");
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tabgroup.appendChild(tabContainer);
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this.tabContainer = tabContainer;
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const buttonContainer = document.createElement("div");
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buttonContainer.setAttribute("class", "etabs-buttons");
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tabgroup.appendChild(buttonContainer);
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this.buttonContainer = buttonContainer;
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const viewContainer = document.createElement("div");
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viewContainer.setAttribute("class", "etabs-views");
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wrapper.appendChild(viewContainer);
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this.viewContainer = viewContainer;
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const style = document.createElement("style");
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style.textContent = styles;
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shadow.appendChild(style);
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shadow.appendChild(wrapper);
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this.tabs = [];
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this.newTabId = 0;
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TabGroupPrivate.initNewTabButton.bind(this)();
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TabGroupPrivate.initVisibility.bind(this)();
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if (typeof this.options.ready === "function") {
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this.options.ready(this);
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}
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}
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addTab (args = this.options.newTab) {
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if (typeof args === "function") {
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args = args(this);
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}
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let id = this.newTabId;
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this.newTabId++;
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let tab = new Tab(this, id, args);
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this.tabs.push(tab);
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// Don't call tab.activate() before a tab is referenced in this.tabs
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if (args.active === true) {
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tab.activate();
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}
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this.emit("tab-added", tab, this);
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return tab;
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}
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getTab (id) {
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for (let i in this.tabs) {
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if (this.tabs[i].id === id) {
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return this.tabs[i];
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}
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}
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return null;
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}
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getTabByPosition (position) {
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let fromRight = position < 0;
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for (let i in this.tabs) {
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if (this.tabs[i].getPosition(fromRight) === position) {
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return this.tabs[i];
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}
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}
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return null;
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}
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getTabByRelPosition (position) {
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position = this.getActiveTab().getPosition() + position;
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if (position <= 0) {
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return null;
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}
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return this.getTabByPosition(position);
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}
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getNextTab () {
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return this.getTabByRelPosition(1);
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}
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getPreviousTab () {
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return this.getTabByRelPosition(-1);
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}
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getTabs () {
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return this.tabs.slice();
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}
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eachTab (fn) {
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this.getTabs().forEach(fn);
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return this;
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}
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getActiveTab () {
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if (this.tabs.length === 0) return null;
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return this.tabs[0];
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}
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}
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const TabGroupPrivate = {
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initNewTabButton: function () {
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if (!this.options.newTab) return;
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let button = this.buttonContainer.appendChild(document.createElement("button"));
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button.classList.add(`${this.options.tabClass}-button-new`);
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button.innerHTML = this.options.newTabButtonText;
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button.addEventListener("click", this.addTab.bind(this, undefined), false);
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},
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initVisibility: function () {
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function toggleTabsVisibility(tab, tabGroup) {
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var visibilityThreshold = this.options.visibilityThreshold;
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var el = tabGroup.tabContainer.parentNode;
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if (this.tabs.length >= visibilityThreshold) {
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el.classList.add("visible");
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} else {
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el.classList.remove("visible");
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}
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}
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this.on("tab-added", toggleTabsVisibility);
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this.on("tab-removed", toggleTabsVisibility);
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},
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removeTab: function (tab, triggerEvent) {
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let id = tab.id;
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for (let i in this.tabs) {
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if (this.tabs[i].id === id) {
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this.tabs.splice(i, 1);
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break;
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}
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}
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if (triggerEvent) {
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this.emit("tab-removed", tab, this);
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}
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return this;
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},
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setActiveTab: function (tab) {
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TabGroupPrivate.removeTab.bind(this)(tab);
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this.tabs.unshift(tab);
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this.emit("tab-active", tab, this);
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return this;
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},
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activateRecentTab: function (tab) {
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if (this.tabs.length > 0) {
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this.tabs[0].activate();
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}
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return this;
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}
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};
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class Tab extends EventTarget {
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constructor (tabGroup, id, args) {
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super();
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this.tabGroup = tabGroup;
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this.id = id;
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this.title = args.title;
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this.badge = args.badge;
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this.iconURL = args.iconURL;
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this.icon = args.icon;
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this.closable = args.closable === false ? false : true;
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this.webviewAttributes = args.webviewAttributes || {};
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this.webviewAttributes.src = args.src;
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this.tabElements = {};
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TabPrivate.initTab.bind(this)();
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TabPrivate.initWebview.bind(this)();
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if (args.visible !== false) {
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this.show();
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}
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if (typeof args.ready === "function") {
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args.ready(this);
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}
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}
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setTitle (title) {
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if (this.isClosed) return;
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let span = this.tabElements.title;
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span.innerHTML = title;
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span.title = title;
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this.title = title;
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this.emit("title-changed", title, this);
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return this;
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}
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getTitle () {
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if (this.isClosed) return;
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return this.title;
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}
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setBadge (badge) {
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if (this.isClosed) return;
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let span = this.tabElements.badge;
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this.badge = badge;
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if (badge) {
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span.innerHTML = badge;
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span.classList.remove('hidden');
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} else {
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span.classList.add('hidden');
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}
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this.emit("badge-changed", badge, this);
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}
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getBadge () {
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if (this.isClosed) return;
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return this.badge;
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}
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setIcon (iconURL, icon) {
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if (this.isClosed) return;
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this.iconURL = iconURL;
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this.icon = icon;
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let span = this.tabElements.icon;
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if (iconURL) {
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span.innerHTML = `<img src="${iconURL}" />`;
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this.emit("icon-changed", iconURL, this);
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} else if (icon) {
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span.innerHTML = `<i class="${icon}"></i>`;
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this.emit("icon-changed", icon, this);
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}
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return this;
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}
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getIcon () {
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if (this.isClosed) return;
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if (this.iconURL) return this.iconURL;
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return this.icon;
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}
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setPosition (newPosition) {
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let tabContainer = this.tabGroup.tabContainer;
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let tabs = tabContainer.children;
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let oldPosition = this.getPosition() - 1;
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if (newPosition < 0) {
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newPosition += tabContainer.childElementCount;
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if (newPosition < 0) {
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newPosition = 0;
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}
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} else {
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if (newPosition > tabContainer.childElementCount) {
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newPosition = tabContainer.childElementCount;
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}
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// Make 1 be leftmost position
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newPosition--;
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}
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if (newPosition > oldPosition) {
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newPosition++;
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}
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tabContainer.insertBefore(tabs[oldPosition], tabs[newPosition]);
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return this;
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}
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getPosition (fromRight) {
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let position = 0;
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let tab = this.tab;
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while ((tab = tab.previousSibling) != null) position++;
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if (fromRight === true) {
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position -= this.tabGroup.tabContainer.childElementCount;
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}
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if (position >= 0) {
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position++;
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}
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return position;
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}
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activate () {
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if (this.isClosed) return;
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let activeTab = this.tabGroup.getActiveTab();
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if (activeTab) {
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activeTab.tab.classList.remove("active");
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activeTab.webview.classList.remove("visible");
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activeTab.emit("inactive", activeTab);
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}
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TabGroupPrivate.setActiveTab.bind(this.tabGroup)(this);
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this.tab.classList.add("active");
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this.webview.classList.add("visible");
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this.webview.focus();
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this.emit("active", this);
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return this;
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}
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show (flag) {
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if (this.isClosed) return;
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if (flag !== false) {
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this.tab.classList.add("visible");
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this.emit("visible", this);
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} else {
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this.tab.classList.remove("visible");
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this.emit("hidden", this);
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}
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return this;
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}
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hide () {
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return this.show(false);
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}
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flash (flag) {
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if (this.isClosed) return;
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if (flag !== false) {
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this.tab.classList.add("flash");
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this.emit("flash", this);
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} else {
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this.tab.classList.remove("flash");
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this.emit("unflash", this);
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}
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return this;
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}
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unflash () {
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return this.flash(false);
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}
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hasClass (classname) {
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return this.tab.classList.contains(classname);
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}
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close (force) {
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const abortController = new AbortController();
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const abort = () => abortController.abort();
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this.emit("closing", this, abort);
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const abortSignal = abortController.signal;
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if (this.isClosed || (!this.closable && !force) || abortSignal.aborted) return;
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this.isClosed = true;
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let tabGroup = this.tabGroup;
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tabGroup.tabContainer.removeChild(this.tab);
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tabGroup.viewContainer.removeChild(this.webview);
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let activeTab = this.tabGroup.getActiveTab();
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TabGroupPrivate.removeTab.bind(tabGroup)(this, true);
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this.emit("close", this);
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if (activeTab.id === this.id) {
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TabGroupPrivate.activateRecentTab.bind(tabGroup)();
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}
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}
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}
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const TabPrivate = {
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initTab: function () {
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let tabClass = this.tabGroup.options.tabClass;
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// Create tab element
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let tab = this.tab = document.createElement("div");
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tab.classList.add(tabClass);
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for (let el of ["icon", "title", "buttons", "badge"]) {
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let span = tab.appendChild(document.createElement("span"));
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span.classList.add(`${tabClass}-${el}`);
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this.tabElements[el] = span;
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}
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this.setTitle(this.title);
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this.setBadge(this.badge);
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this.setIcon(this.iconURL, this.icon);
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TabPrivate.initTabButtons.bind(this)();
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TabPrivate.initTabClickHandler.bind(this)();
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this.tabGroup.tabContainer.appendChild(this.tab);
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},
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initTabButtons: function () {
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let container = this.tabElements.buttons;
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let tabClass = this.tabGroup.options.tabClass;
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if (this.closable) {
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let button = container.appendChild(document.createElement("button"));
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button.classList.add(`${tabClass}-button-close`);
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button.innerHTML = this.tabGroup.options.closeButtonText;
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button.addEventListener("click", this.close.bind(this, false), false);
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}
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},
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initTabClickHandler: function () {
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// Mouse up
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const tabClickHandler = function (e) {
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if (this.isClosed) return;
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if (e.which === 2) {
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this.close();
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}
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};
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this.tab.addEventListener("mouseup", tabClickHandler.bind(this), false);
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// Mouse down
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const tabMouseDownHandler = function (e) {
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if (this.isClosed) return;
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if (e.which === 1) {
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if (e.target.matches("button")) return;
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this.activate();
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}
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};
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this.tab.addEventListener("mousedown", tabMouseDownHandler.bind(this), false);
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},
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initWebview: function () {
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const webview = this.webview = document.createElement("webview");
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const tabWebviewDidFinishLoadHandler = function (e) {
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this.emit("webview-ready", this);
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};
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this.webview.addEventListener("did-finish-load", tabWebviewDidFinishLoadHandler.bind(this), false);
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const tabWebviewDomReadyHandler = function (e) {
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// Remove this once https://github.com/electron/electron/issues/14474 is fixed
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webview.blur();
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webview.focus();
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this.emit("webview-dom-ready", this);
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};
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this.webview.addEventListener("dom-ready", tabWebviewDomReadyHandler.bind(this), false);
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this.webview.classList.add(this.tabGroup.options.viewClass);
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if (this.webviewAttributes) {
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let attrs = this.webviewAttributes;
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for (let key in attrs) {
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const attr = attrs[key];
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if (attr === false) continue;
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this.webview.setAttribute(key, attr);
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}
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}
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this.tabGroup.viewContainer.appendChild(this.webview);
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}
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};
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/**
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* This makes the browser EventTarget API work similar to EventEmitter
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*/
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const eventEmitterMixin = {
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emit (type, ...args) {
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this.dispatchEvent(new CustomEvent(type, { detail: args }));
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},
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on (type, fn) {
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this.addEventListener(type, ({ detail }) => fn.apply(this, detail));
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},
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once (type, fn) {
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this.addEventListener(type, ({ detail }) => fn.apply(this, detail), { once: true });
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}
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};
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Object.assign(TabGroup.prototype, eventEmitterMixin);
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Object.assign(Tab.prototype, eventEmitterMixin);
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customElements.define("tab-group", TabGroup);
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