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import {Component, OnInit} from 'angular2/core';
import {HighlightType, EstimateDirection} from '../../enums';
import {PlanService} from '../../services/plan-service';
/// <reference path="lodash.d.ts" />
@Component({
selector: 'plan-node',
inputs: ['node', 'planStats', 'viewOptions'],
templateUrl: './components/plan-node/plan-node.html',
directives: [PlanNode],
providers: [PlanService]
})
export class PlanNode {
// consts
MAX_WIDTH: number = 220;
MIN_ESTIMATE_MISS: number = 100;
COSTLY_TAG: string = 'costliest';
SLOW_TAG: string = 'slowest';
LARGE_TAG: string = 'largest';
ESTIMATE_TAG: string = 'bad estimate';
// inputs
node: any;
planStats: any;
viewOptions: any;
// calculated properties
duration: string;
durationUnit: string;
executionTimePercent: number;
backgroundColor: string;
highlightValue: number;
width: number;
props: Array<any>;
tags: Array<string>;
plannerRowEstimateValue: number;
plannerRowEstimateDirection: EstimateDirection;
currentHighlightType: string;
// expose enum to view
estimateDirections = EstimateDirection;
highlightTypes = HighlightType;
constructor(private _planService: PlanService) { }
ngOnInit() {
this.currentHighlightType = this.viewOptions.highlightType;
this.calculateBar();
this.calculateProps();
this.calculateDuration();
this.calculateTags();
this.plannerRowEstimateDirection = this.node[this._planService.PLANNER_ESIMATE_DIRECTION];
this.plannerRowEstimateValue = _.round(this.node[this._planService.PLANNER_ESTIMATE_FACTOR]);
}
ngDoCheck() {
// console.log("check", this.currentHighlightType, this.viewOptions.highlightType);
if (this.currentHighlightType !== this.viewOptions.highlightType) {
this.currentHighlightType = this.viewOptions.highlightType;
this.calculateBar();
}
}
calculateBar() {
switch (this.currentHighlightType) {
case HighlightType.DURATION:
this.highlightValue = (this.node[this._planService.ACTUAL_DURATION_PROP]);
this.width = Math.round((this.highlightValue / this.planStats.maxDuration) * this.MAX_WIDTH);
break;
case HighlightType.ROWS:
this.highlightValue = (this.node[this._planService.ACTUAL_ROWS_PROP]);
this.width = Math.round((this.highlightValue / this.planStats.maxRows) * this.MAX_WIDTH);
break;
case HighlightType.COST:
this.highlightValue = (this.node[this._planService.ACTUAL_COST_PROP]);
this.width = Math.round((this.highlightValue / this.planStats.maxCost) * this.MAX_WIDTH);
break;
}
if (this.width < 1) { this.width = 1 }
this.backgroundColor = this.numberToColorHsl(1 - this.width / this.MAX_WIDTH);
}
calculateDuration() {
var dur: number = _.round(this.node[this._planService.ACTUAL_DURATION_PROP]);
// convert duration into approriate units
if (dur < 1) {
this.duration = "<1";
this.durationUnit = 'ms';
} else if (dur > 1 && dur < 1000) {
this.duration = dur.toString();
this.durationUnit = 'ms';
} else {
this.duration = _.round(dur / 1000, 2).toString();
this.durationUnit = 'mins';
}
this.executionTimePercent = (_.round((dur / this.planStats.executionTime) * 100));
}
// create an array of node propeties so that they can be displayed in the view
calculateProps() {
this.props = _.chain(this.node)
.omit('Plans')
.map((value, key) => {
return { key: key, value: value };
})
.value();
}
calculateTags() {
this.tags = [];
if (this.node[this._planService.SLOWEST_NODE_PROP]) {
this.tags.push(this.SLOW_TAG);
}
if (this.node[this._planService.COSTLIEST_NODE_PROP]) {
this.tags.push(this.COSTLY_TAG);
}
if (this.node[this._planService.LARGEST_NODE_PROP]) {
this.tags.push(this.LARGE_TAG);
}
if (this.node[this._planService.PLANNER_ESTIMATE_FACTOR] >= this.MIN_ESTIMATE_MISS) {
this.tags.push(this.ESTIMATE_TAG);
}
}
/**
* http://stackoverflow.com/questions/2353211/hsl-to-rgb-color-conversion
*
* Converts an HSL color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes h, s, and l are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
*
* @param Number h The hue
* @param Number s The saturation
* @param Number l The lightness
* @return Array The RGB representation
*/
hslToRgb(h, s, l) {
var r, g, b;
if (s == 0) {
r = g = b = l; // achromatic
} else {
function hue2rgb(p, q, t) {
if (t < 0) t += 1;
if (t > 1) t -= 1;
if (t < 1 / 6) return p + (q - p) * 6 * t;
if (t < 1 / 2) return q;
if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
return p;
}
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1 / 3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1 / 3);
}
return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];
}
// convert a number to a color using hsl
numberToColorHsl(i) {
// as the function expects a value between 0 and 1, and red = 0° and green = 120°
// we convert the input to the appropriate hue value
var hue = i * 100 * 1.2 / 360;
// we convert hsl to rgb (saturation 100%, lightness 50%)
var rgb = this.hslToRgb(hue, .9, .4);
// we format to css value and return
return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
}
}
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