Merge branch 'master' into chart-yaml

gruntfile.js

@@ -1,3 +1,4 @@
+const fs = require('fs')
 const path = require('path')
 const ChildProcess = require('child_process')
 const packager = require('electron-packager')
@@ -284,5 +285,48 @@ module.exports = function (grunt) {
     }
   })
 
+  grunt.registerTask('bfm', function () {
+    const Color = require('color')
+    const parseCSS = require('css').parse
+
+    const root = path.join(__dirname, 'node_modules/codemirror/theme/')
+
+    const colors = fs.readdirSync(root).map(file => {
+      const css = parseCSS(fs.readFileSync(path.join(root, file), 'utf8'))
+
+      const rules = css.stylesheet.rules.filter(rule => rule.selectors && /\b\.CodeMirror$/.test(rule.selectors[0]))
+      if (rules.length === 1) {
+        let bgColor = Color('white')
+        let fgColor = Color('black')
+
+        rules[0].declarations.forEach(declaration => {
+          if (declaration.property === 'background-color' || declaration.property === 'background') {
+            bgColor = Color(declaration.value.split(' ')[0])
+          } else if (declaration.property === 'color') {
+            const value = /^(.*?)(?:\s*!important)?$/.exec(declaration.value)[1]
+            const match = /^rgba\((.*?),\s*1\)$/.exec(value)
+            if (match) {
+              fgColor = Color(`rgb(${match[1]})`)
+            } else {
+              fgColor = Color(value)
+            }
+          }
+        })
+
+        if (bgColor.isLight()) {
+          bgColor = bgColor.mix(fgColor, 0.05)
+        } else {
+          bgColor = bgColor.mix(fgColor, 0.1)
+        }
+
+        return `${rules[0].selectors[0]} .cm-table-row-even { background-color: ${bgColor.rgb().string()}; }`
+      }
+    }).filter(value => !!value)
+
+    const defaultBgColor = Color('white').mix(Color('black'), 0.05)
+
+    fs.writeFileSync(path.join(__dirname, 'extra_scripts/codemirror/mode/bfm/bfm.css'), [`.cm-table-row-even { background-color: ${defaultBgColor.rgb().string()}; }`, ...colors].join('\n'), 'utf8')
+  })
+
   grunt.registerTask('default', ['build'])
 }