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/* -*- 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";
// Make this available to both AMD and CJS environments
define(function (require, exports, module) {
// ReactJS
const React = require("devtools/client/shared/vendor/react");
const ReactDOM = require("devtools/client/shared/vendor/react-dom");
// Tree
const TreeCell = React.createFactory(require("./tree-cell"));
const LabelCell = React.createFactory(require("./label-cell"));
// Shortcuts
const { tr } = React.DOM;
const PropTypes = React.PropTypes;
/**
* This template represents a node in TreeView component. It's rendered
* using <tr> element (the entire tree is one big <table>).
*/
let TreeRow = React.createClass({
displayName: "TreeRow",
// See TreeView component for more details about the props and
// the 'member' object.
propTypes: {
member: PropTypes.shape({
object: PropTypes.obSject,
name: PropTypes.sring,
type: PropTypes.string.isRequired,
rowClass: PropTypes.string.isRequired,
level: PropTypes.number.isRequired,
hasChildren: PropTypes.bool,
value: PropTypes.any,
open: PropTypes.bool.isRequired,
path: PropTypes.string.isRequired,
hidden: PropTypes.bool,
}),
decorator: PropTypes.object,
renderCell: PropTypes.object,
renderLabelCell: PropTypes.object,
columns: PropTypes.array.isRequired,
provider: PropTypes.object.isRequired,
onClick: PropTypes.func.isRequired
},
componentWillReceiveProps(nextProps) {
// I don't like accessing the underlying DOM elements directly,
// but this optimization makes the filtering so damn fast!
// The row doesn't have to be re-rendered, all we really need
// to do is toggling a class name.
// The important part is that DOM elements don't need to be
// re-created when they should appear again.
if (nextProps.member.hidden != this.props.member.hidden) {
let row = ReactDOM.findDOMNode(this);
row.classList.toggle("hidden");
}
},
/**
* Optimize row rendering. If props are the same do not render.
* This makes the rendering a lot faster!
*/
shouldComponentUpdate: function (nextProps) {
let props = ["name", "open", "value", "loading"];
for (let p in props) {
if (nextProps.member[props[p]] != this.props.member[props[p]]) {
return true;
}
}
return false;
},
getRowClass: function (object) {
let decorator = this.props.decorator;
if (!decorator || !decorator.getRowClass) {
return [];
}
// Decorator can return a simple string or array of strings.
let classNames = decorator.getRowClass(object);
if (!classNames) {
return [];
}
if (typeof classNames == "string") {
classNames = [classNames];
}
return classNames;
},
render: function () {
let member = this.props.member;
let decorator = this.props.decorator;
// Compute class name list for the <tr> element.
let classNames = this.getRowClass(member.object) || [];
classNames.push("treeRow");
classNames.push(member.type + "Row");
if (member.hasChildren) {
classNames.push("hasChildren");
}
if (member.open) {
classNames.push("opened");
}
if (member.loading) {
classNames.push("loading");
}
if (member.hidden) {
classNames.push("hidden");
}
// The label column (with toggle buttons) is usually
// the first one, but there might be cases (like in
// the Memory panel) where the toggling is done
// in the last column.
let cells = [];
// Get components for rendering cells.
let renderCell = this.props.renderCell || RenderCell;
let renderLabelCell = this.props.renderLabelCell || RenderLabelCell;
if (decorator && decorator.renderLabelCell) {
renderLabelCell = decorator.renderLabelCell(member.object) ||
renderLabelCell;
}
// Render a cell for every column.
this.props.columns.forEach(col => {
let props = Object.assign({}, this.props, {
key: col.id,
id: col.id,
value: this.props.provider.getValue(member.object, col.id)
});
if (decorator && decorator.renderCell) {
renderCell = decorator.renderCell(member.object, col.id);
}
let render = (col.id == "default") ? renderLabelCell : renderCell;
// Some cells don't have to be rendered. This happens when some
// other cells span more columns. Note that the label cells contains
// toggle buttons and should be usually there unless we are rendering
// a simple non-expandable table.
if (render) {
cells.push(render(props));
}
});
// Render tree row
return (
tr({
className: classNames.join(" "),
onClick: this.props.onClick},
cells
)
);
}
});
// Helpers
let RenderCell = props => {
return TreeCell(props);
};
let RenderLabelCell = props => {
return LabelCell(props);
};
// Exports from this module
module.exports = TreeRow;
});
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