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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";
const { createClass, createFactory, PropTypes } = require("devtools/client/shared/vendor/react");
const Tree = createFactory(require("devtools/client/shared/components/tree"));
const WaterfallTreeRow = createFactory(require("./waterfall-tree-row"));
// px - keep in sync with var(--waterfall-tree-row-height) in performance.css
const WATERFALL_TREE_ROW_HEIGHT = 15;
/**
* Checks if a given marker is in the specified time range.
*
* @param object e
* The marker containing the { start, end } timestamps.
* @param number start
* The earliest allowed time.
* @param number end
* The latest allowed time.
* @return boolean
* True if the marker fits inside the specified time range.
*/
function isMarkerInRange(e, start, end) {
let mStart = e.start | 0;
let mEnd = e.end | 0;
return (
// bounds inside
(mStart >= start && mEnd <= end) ||
// bounds outside
(mStart < start && mEnd > end) ||
// overlap start
(mStart < start && mEnd >= start && mEnd <= end) ||
// overlap end
(mEnd > end && mStart >= start && mStart <= end)
);
}
const WaterfallTree = createClass({
displayName: "WaterfallTree",
propTypes: {
marker: PropTypes.object.isRequired,
startTime: PropTypes.number.isRequired,
endTime: PropTypes.number.isRequired,
dataScale: PropTypes.number.isRequired,
sidebarWidth: PropTypes.number.isRequired,
waterfallWidth: PropTypes.number.isRequired,
onFocus: PropTypes.func,
},
getInitialState() {
return {
focused: null,
expanded: new Set()
};
},
_getRoots(node) {
let roots = this.props.marker.submarkers || [];
return roots.filter(this._filter);
},
/**
* Find the parent node of 'node' with a depth-first search of the marker tree
*/
_getParent(node) {
function findParent(marker) {
if (marker.submarkers) {
for (let submarker of marker.submarkers) {
if (submarker === node) {
return marker;
}
let parent = findParent(submarker);
if (parent) {
return parent;
}
}
}
return null;
}
let rootMarker = this.props.marker;
let parent = findParent(rootMarker);
// We are interested only in parent markers that are rendered,
// which rootMarker is not. Return null if the parent is rootMarker.
return parent !== rootMarker ? parent : null;
},
_getChildren(node) {
let submarkers = node.submarkers || [];
return submarkers.filter(this._filter);
},
_getKey(node) {
return `marker-${node.index}`;
},
_isExpanded(node) {
return this.state.expanded.has(node);
},
_onExpand(node) {
this.setState(state => {
let expanded = new Set(state.expanded);
expanded.add(node);
return { expanded };
});
},
_onCollapse(node) {
this.setState(state => {
let expanded = new Set(state.expanded);
expanded.delete(node);
return { expanded };
});
},
_onFocus(node) {
this.setState({ focused: node });
if (this.props.onFocus) {
this.props.onFocus(node);
}
},
_filter(node) {
let { startTime, endTime } = this.props;
return isMarkerInRange(node, startTime, endTime);
},
_renderItem(marker, level, focused, arrow, expanded) {
let { startTime, dataScale, sidebarWidth } = this.props;
return WaterfallTreeRow({
marker,
level,
arrow,
expanded,
focused,
startTime,
dataScale,
sidebarWidth
});
},
render() {
return Tree({
getRoots: this._getRoots,
getParent: this._getParent,
getChildren: this._getChildren,
getKey: this._getKey,
isExpanded: this._isExpanded,
onExpand: this._onExpand,
onCollapse: this._onCollapse,
onFocus: this._onFocus,
renderItem: this._renderItem,
focused: this.state.focused,
itemHeight: WATERFALL_TREE_ROW_HEIGHT
});
}
});
module.exports = WaterfallTree;
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