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/* 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";
/**
* This file contains the rendering code for the marker sidebar.
*/
const EventEmitter = require("devtools/shared/event-emitter");
const { MarkerDOMUtils } = require("devtools/client/performance/modules/marker-dom-utils");
/**
* A detailed view for one single marker.
*
* @param nsIDOMNode parent
* The parent node holding the view.
* @param nsIDOMNode splitter
* The splitter node that the resize event is bound to.
*/
function MarkerDetails(parent, splitter) {
EventEmitter.decorate(this);
this._document = parent.ownerDocument;
this._parent = parent;
this._splitter = splitter;
this._onClick = this._onClick.bind(this);
this._onSplitterMouseUp = this._onSplitterMouseUp.bind(this);
this._parent.addEventListener("click", this._onClick);
this._splitter.addEventListener("mouseup", this._onSplitterMouseUp);
this.hidden = true;
}
MarkerDetails.prototype = {
/**
* Sets this view's width.
* @param number
*/
set width(value) {
this._parent.setAttribute("width", value);
},
/**
* Sets this view's width.
* @return number
*/
get width() {
return +this._parent.getAttribute("width");
},
/**
* Sets this view's visibility.
* @param boolean
*/
set hidden(value) {
if (this._parent.hidden != value) {
this._parent.hidden = value;
this.emit("resize");
}
},
/**
* Gets this view's visibility.
* @param boolean
*/
get hidden() {
return this._parent.hidden;
},
/**
* Clears the marker details from this view.
*/
empty: function () {
this._parent.innerHTML = "";
},
/**
* Populates view with marker's details.
*
* @param object params
* An options object holding:
* - marker: The marker to display.
* - frames: Array of stack frame information; see stack.js.
* - allocations: Whether or not allocations were enabled for this
* recording. [optional]
*/
render: function (options) {
let { marker, frames } = options;
this.empty();
let elements = [];
elements.push(MarkerDOMUtils.buildTitle(this._document, marker));
elements.push(MarkerDOMUtils.buildDuration(this._document, marker));
MarkerDOMUtils.buildFields(this._document, marker).forEach(f => elements.push(f));
MarkerDOMUtils.buildCustom(this._document, marker, options)
.forEach(f => elements.push(f));
// Build a stack element -- and use the "startStack" label if
// we have both a startStack and endStack.
if (marker.stack) {
let type = marker.endStack ? "startStack" : "stack";
elements.push(MarkerDOMUtils.buildStackTrace(this._document, {
frameIndex: marker.stack, frames, type
}));
}
if (marker.endStack) {
let type = "endStack";
elements.push(MarkerDOMUtils.buildStackTrace(this._document, {
frameIndex: marker.endStack, frames, type
}));
}
elements.forEach(el => this._parent.appendChild(el));
},
/**
* Handles click in the marker details view. Based on the target,
* can handle different actions -- only supporting view source links
* for the moment.
*/
_onClick: function (e) {
let data = findActionFromEvent(e.target, this._parent);
if (!data) {
return;
}
this.emit(data.action, data);
},
/**
* Handles the "mouseup" event on the marker details view splitter.
*/
_onSplitterMouseUp: function () {
this.emit("resize");
}
};
/**
* Take an element from an event `target`, and ascend through
* the DOM, looking for an element with a `data-action` attribute. Return
* the parsed `data-action` value found, or null if none found before
* reaching the parent `container`.
*
* @param {Element} target
* @param {Element} container
* @return {?object}
*/
function findActionFromEvent(target, container) {
let el = target;
let action;
while (el !== container) {
action = el.getAttribute("data-action");
if (action) {
return JSON.parse(action);
}
el = el.parentNode;
}
return null;
}
exports.MarkerDetails = MarkerDetails;
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