gecko/browser/devtools/debugger/panel.js

129 lines
3.9 KiB
JavaScript

/* -*- indent-tabs-mode: nil; js-indent-level: 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/. */
"use strict";
const { Cc, Ci, Cu, Cr } = require("chrome");
const { Promise: promise } = Cu.import("resource://gre/modules/Promise.jsm", {});
const EventEmitter = require("devtools/toolkit/event-emitter");
const DevToolsUtils = require("devtools/toolkit/DevToolsUtils");
function DebuggerPanel(iframeWindow, toolbox) {
this.panelWin = iframeWindow;
this._toolbox = toolbox;
this._destroyer = null;
this._view = this.panelWin.DebuggerView;
this._controller = this.panelWin.DebuggerController;
this._view._hostType = this._toolbox.hostType;
this._controller._target = this.target;
this._controller._toolbox = this._toolbox;
this.handleHostChanged = this.handleHostChanged.bind(this);
this.highlightWhenPaused = this.highlightWhenPaused.bind(this);
this.unhighlightWhenResumed = this.unhighlightWhenResumed.bind(this);
EventEmitter.decorate(this);
};
exports.DebuggerPanel = DebuggerPanel;
DebuggerPanel.prototype = {
/**
* Open is effectively an asynchronous constructor.
*
* @return object
* A promise that is resolved when the Debugger completes opening.
*/
open: function() {
let targetPromise;
// Local debugging needs to make the target remote.
if (!this.target.isRemote) {
targetPromise = this.target.makeRemote();
// Listen for tab switching events to manage focus when the content window
// is paused and events suppressed.
this.target.tab.addEventListener('TabSelect', this);
} else {
targetPromise = promise.resolve(this.target);
}
return targetPromise
.then(() => this._controller.startupDebugger())
.then(() => this._controller.connect())
.then(() => {
this._toolbox.on("host-changed", this.handleHostChanged);
this.target.on("thread-paused", this.highlightWhenPaused);
this.target.on("thread-resumed", this.unhighlightWhenResumed);
this.isReady = true;
this.emit("ready");
return this;
})
.then(null, function onError(aReason) {
DevToolsUtils.reportException("DebuggerPanel.prototype.open", aReason);
});
},
// DevToolPanel API
get target() {
return this._toolbox.target;
},
destroy: function() {
// Make sure this panel is not already destroyed.
if (this._destroyer) {
return this._destroyer;
}
this.target.off("thread-paused", this.highlightWhenPaused);
this.target.off("thread-resumed", this.unhighlightWhenResumed);
if (!this.target.isRemote) {
this.target.tab.removeEventListener('TabSelect', this);
}
return this._destroyer = this._controller.shutdownDebugger().then(() => {
this.emit("destroyed");
});
},
// DebuggerPanel API
addBreakpoint: function(aLocation, aOptions) {
return this._controller.Breakpoints.addBreakpoint(aLocation, aOptions);
},
removeBreakpoint: function(aLocation) {
return this._controller.Breakpoints.removeBreakpoint(aLocation);
},
handleHostChanged: function() {
this._view.handleHostChanged(this._toolbox.hostType);
},
highlightWhenPaused: function() {
this._toolbox.highlightTool("jsdebugger");
// Also raise the toolbox window if it is undocked or select the
// corresponding tab when toolbox is docked.
this._toolbox.raise();
},
unhighlightWhenResumed: function() {
this._toolbox.unhighlightTool("jsdebugger");
},
// nsIDOMEventListener API
handleEvent: function(aEvent) {
if (aEvent.target == this.target.tab &&
this._controller.activeThread.state == "paused") {
// Wait a tick for the content focus event to be delivered.
DevToolsUtils.executeSoon(() => this._toolbox.focusTool("jsdebugger"));
}
}
};