gecko/browser/devtools/framework/Sidebar.jsm

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
this.EXPORTED_SYMBOLS = ["ToolSidebar"];
Cu.import("resource://gre/modules/commonjs/promise/core.js");
Cu.import("resource:///modules/devtools/EventEmitter.jsm");
const XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
/**
* ToolSidebar provides methods to register tabs in the sidebar.
* It's assumed that the sidebar contains a xul:tabbox.
*
* @param {Node} tabbox
* <tabbox> node;
* @param {ToolPanel} panel
* Related ToolPanel instance;
* @param {Boolean} showTabstripe
* Show the tabs.
*/
this.ToolSidebar = function ToolSidebar(tabbox, panel, showTabstripe=true)
{
EventEmitter.decorate(this);
this._tabbox = tabbox;
this._panelDoc = this._tabbox.ownerDocument;
this._toolPanel = panel;
this._tabbox.tabpanels.addEventListener("select", this, true);
this._tabs = new Map();
if (!showTabstripe) {
this._tabbox.setAttribute("hidetabs", "true");
}
}
ToolSidebar.prototype = {
/**
* Register a tab. A tab is a document.
* The document must have a title, which will be used as the name of the tab.
*
* @param {string} tab uniq id
* @param {string} url
*/
addTab: function ToolSidebar_addTab(id, url, selected=false) {
let iframe = this._panelDoc.createElementNS(XULNS, "iframe");
iframe.className = "iframe-" + id;
iframe.setAttribute("flex", "1");
iframe.setAttribute("src", url);
let tab = this._tabbox.tabs.appendItem();
tab.setAttribute("label", ""); // Avoid showing "undefined" while the tab is loading
let onIFrameLoaded = function() {
tab.setAttribute("label", iframe.contentDocument.title);
iframe.removeEventListener("DOMContentLoaded", onIFrameLoaded, true);
if ("setPanel" in iframe.contentWindow) {
iframe.contentWindow.setPanel(this._toolPanel, iframe);
}
this.emit(id + "-ready");
}.bind(this);
iframe.addEventListener("DOMContentLoaded", onIFrameLoaded, true);
let tabpanel = this._panelDoc.createElementNS(XULNS, "tabpanel");
tabpanel.setAttribute("id", "sidebar-panel-" + id);
tabpanel.appendChild(iframe);
this._tabbox.tabpanels.appendChild(tabpanel);
tab.linkedPanel = "sidebar-panel-" + id;
// We store the index of this tab.
this._tabs.set(id, tab);
if (selected) {
// For some reason I don't understand, if we call this.select in this
// event loop (after inserting the tab), the tab will never get the
// the "selected" attribute set to true.
this._panelDoc.defaultView.setTimeout(function() {
this.select(id);
}.bind(this), 0);
}
this.emit("new-tab-registered", id);
},
/**
* Select a specific tab.
*/
select: function ToolSidebar_select(id) {
let tab = this._tabs.get(id);
if (tab) {
this._tabbox.selectedTab = tab;
}
},
/**
* Return the id of the selected tab.
*/
getCurrentTabID: function ToolSidebar_getCurrentTabID() {
let currentID = null;
for (let [id, tab] of this._tabs) {
if (this._tabbox.tabs.selectedItem == tab) {
currentID = id;
break;
}
}
return currentID;
},
/**
* Returns the requested tab based on the id.
*
* @param String id
* unique id of the requested tab.
*/
getTab: function ToolSidebar_getTab(id) {
return this._tabbox.tabpanels.querySelector("#sidebar-panel-" + id);
},
/**
* Event handler.
*/
handleEvent: function ToolSidebar_eventHandler(event) {
if (event.type == "select") {
let previousTool = this._currentTool;
this._currentTool = this.getCurrentTabID();
if (previousTool) {
this.emit(previousTool + "-unselected");
}
this.emit(this._currentTool + "-selected");
this.emit("select", this._currentTool);
}
},
/**
* Toggle sidebar's visibility state.
*/
toggle: function ToolSidebar_toggle() {
if (this._tabbox.hasAttribute("hidden")) {
this.show();
} else {
this.hide();
}
},
/**
* Show the sidebar.
*/
show: function ToolSidebar_show() {
this._tabbox.removeAttribute("hidden");
},
/**
* Show the sidebar.
*/
hide: function ToolSidebar_hide() {
this._tabbox.setAttribute("hidden", "true");
},
/**
* Return the window containing the tab content.
*/
getWindowForTab: function ToolSidebar_getWindowForTab(id) {
if (!this._tabs.has(id)) {
return null;
}
let panel = this._panelDoc.getElementById(this._tabs.get(id).linkedPanel);
return panel.firstChild.contentWindow;
},
/**
* Clean-up.
*/
destroy: function ToolSidebar_destroy() {
if (this._destroyed) {
return Promise.resolve(null);
}
this._destroyed = true;
this._tabbox.tabpanels.removeEventListener("select", this, true);
while (this._tabbox.tabpanels.hasChildNodes()) {
this._tabbox.tabpanels.removeChild(this._tabbox.tabpanels.firstChild);
}
while (this._tabbox.tabs.hasChildNodes()) {
this._tabbox.tabs.removeChild(this._tabbox.tabs.firstChild);
}
this._tabs = null;
this._tabbox = null;
this._panelDoc = null;
this._toolPanel = null;
return Promise.resolve(null);
},
}