src/utils

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

import { DEFAULT_MIN_WIDTH } from './Table'

Retrieve a property from an object

Parameters:

obj must be an object.
(The object to query)
path must be a string.
(The path the the property)
defaultValue must be a *.
(The value to return if the property is not present)

export const getProperty = (obj, path, defaultValue = null) => (path || '').split('.').reduce((obj, prop, index, array) => { if (obj) { const [, key, item] = /([^[]*)(.*)/.exec(prop) if (Object.prototype.hasOwnProperty.call(obj, key)) { if (item) { const [, index] = /\[(\d+)\]/.exec(item) return obj[key][index] } else { return obj[key] } } } return index === array.length - 1 ? defaultValue : null }, obj)

Replaces params of the form ${k} in a string with values supplied from a hash {k: v}

export const subst = params => {

console.log('subst', params)

const { tpl, data, encode = false } = params const repl = object => x => { const k = x.substring(2, x.length - 1) const v = getProperty(object, k) return encode ? encodeURIComponent(v) : v } return tpl.replace(/\${[^}]+}/g, repl(data)) }

Default function to measure cells for column autoresizing <PagingType>

Key	Type	Description
td	`<element>`	DOM element corresponding to the cell td
row	`<number>`	Row index of the cell
metric	`<MetricType>`	Metric computed so far for the column

<MetricType>

Key	Type	Description
width	`<number>`	The max width of the column, so far. The function should alter this value
column	`<ColumnType>`	The column definition
index	`<number>`	The column index in its section
context	`<CanvasRenderingContext2D>`	A canvas 2D context which can be used as a helper

Parameters:

params must be an object.
(parameters specifying which cell to resize)

export const measureCell = params => {

console.log('measureCell', params)

const { td, metric, row } = params if (td) { const { context } = metric const cell = td.firstChild if (row === 0 && cell) {

Retrieve style of the first cell of the column an assume all other cells with be styled in the same way

const tdStyle = window.getComputedStyle(td) const cellStyle = window.getComputedStyle(cell) const { fontFamily, fontSize, fontWeight } = tdStyle metric.dx = parseInt(cellStyle.marginLeft) + parseInt(cellStyle.marginRight) + parseInt(cellStyle.paddingLeft) + parseInt(cellStyle.paddingRight) + parseInt(tdStyle.paddingLeft) + parseInt(tdStyle.paddingRight) const font = `${fontWeight} ${fontSize} ${fontFamily}` if (context.font !== font) { context.font = font } } if (cell) { const text = cell.textContent

console.log('text', text)

const { width } = context.measureText(text) metric.width = Math.max(metric.width, width + metric.dx) } } } export const measureCols = (context, cols, section, rowIdAttr) => { if (section) { const metrics = cols.reduce( (acc, column, colIndex) => { const { autoresize, minWidth = DEFAULT_MIN_WIDTH, index, measure = measureCell } = column if (autoresize) { acc.push({ column, index: index !== undefined ? index : colIndex, width: minWidth, context, measure }) } return acc }, [], {} ) if (metrics.length > 0) { const body = section.lastChild if (body) { const rows = body.firstChild if (rows) { const dx = rowIdAttr ? 1 : 0 metrics.forEach(metric => { const { index } = metric Array.prototype.forEach.call( rows.children, (rowElem, row) => { if (rowElem) { const children = rowElem.querySelectorAll('.rrt-td') const td = children[index + dx] if (td) { metric.measure({ td, metric, row }) } } }, metrics ) }) } } } return metrics } return null } export const LOGS = {} export const LEVELS = { ERROR: 0, INFO: 1, DEBUG: 2 } export const log = (facility, severity, ...args) => { const sev = LOGS[facility] if (typeof sev === 'number' && severity >= sev) { console.log(facility, ...args) } }