add special link handling

extra_scripts/codemirror/addon/hyperlink/hyperlink.js

@@ -1,22 +1,31 @@
-(function (mod) {
-  if (typeof exports === 'object' && typeof module === 'object') { // Common JS
+;(function(mod) {
+  if (typeof exports === 'object' && typeof module === 'object') {
+    // Common JS
     mod(require('../codemirror/lib/codemirror'))
-  } else if (typeof define === 'function' && define.amd) { // AMD
+  } else if (typeof define === 'function' && define.amd) {
+    // AMD
     define(['../codemirror/lib/codemirror'], mod)
-  } else { // Plain browser env
+  } else {
+    // Plain browser env
     mod(CodeMirror)
   }
-})(function (CodeMirror) {
+})(function(CodeMirror) {
   'use strict'
 
   const shell = require('electron').shell
+  const remote = require('electron').remote
+  const eventEmitter = {
+    emit: function() {
+      remote.getCurrentWindow().webContents.send.apply(null, arguments)
+    }
+  }
   const yOffset = 2
 
   const macOS = global.process.platform === 'darwin'
   const modifier = macOS ? 'metaKey' : 'ctrlKey'
 
   class HyperLink {
-    constructor (cm) {
+    constructor(cm) {
       this.cm = cm
       this.lineDiv = cm.display.lineDiv
 
@@ -28,11 +37,16 @@
       this.tooltip = document.createElement('div')
       this.tooltipContent = document.createElement('div')
       this.tooltipIndicator = document.createElement('div')
-      this.tooltip.setAttribute('class', 'CodeMirror-hover CodeMirror-matchingbracket CodeMirror-selected')
+      this.tooltip.setAttribute(
+        'class',
+        'CodeMirror-hover CodeMirror-matchingbracket CodeMirror-selected'
+      )
       this.tooltip.setAttribute('cm-ignore-events', 'true')
       this.tooltip.appendChild(this.tooltipContent)
       this.tooltip.appendChild(this.tooltipIndicator)
-      this.tooltipContent.textContent = `${macOS ? 'Cmd(⌘)' : 'Ctrl(^)'} + click to follow link`
+      this.tooltipContent.textContent = `${
+        macOS ? 'Cmd(⌘)' : 'Ctrl(^)'
+      } + click to follow link`
 
       this.lineDiv.addEventListener('mousedown', this.onMouseDown)
       this.lineDiv.addEventListener('mouseenter', this.onMouseEnter, {
@@ -47,7 +61,7 @@
         passive: true
       })
     }
-    getUrl (el) {
+    getUrl(el) {
       const className = el.className.split(' ')
 
       if (className.indexOf('cm-url') !== -1) {
@@ -60,26 +74,99 @@
 
       return null
     }
-    onMouseDown (e) {
+    specialLinkHandler(e, rawHref, linkHash) {
+      const isStartWithHash = rawHref[0] === '#'
+
+      const extractIdRegex = /file:\/\/.*main.?\w*.html#/ // file://path/to/main(.development.)html
+      const regexNoteInternalLink = new RegExp(`${extractIdRegex.source}(.+)`)
+      if (isStartWithHash || regexNoteInternalLink.test(rawHref)) {
+        const posOfHash = linkHash.indexOf('#')
+        if (posOfHash > -1) {
+          const extractedId = linkHash.slice(posOfHash + 1)
+          const targetId = mdurl.encode(extractedId)
+          const targetElement = document.getElementById(targetId) // this.getWindow().document.getElementById(targetId)
+
+          if (targetElement != null) {
+            this.scrollTo(0, targetElement.offsetTop)
+          }
+          return
+        }
+      }
+
+      // this will match the new uuid v4 hash and the old hash
+      // e.g.
+      // :note:1c211eb7dcb463de6490 and
+      // :note:7dd23275-f2b4-49cb-9e93-3454daf1af9c
+      const regexIsNoteLink = /^:note:([a-zA-Z0-9-]{20,36})$/
+      if (regexIsNoteLink.test(linkHash)) {
+        eventEmitter.emit('list:jump', linkHash.replace(':note:', ''))
+        return
+      }
+
+      const regexIsLine = /^:line:[0-9]/
+      if (regexIsLine.test(linkHash)) {
+        const numberPattern = /\d+/g
+
+        const lineNumber = parseInt(linkHash.match(numberPattern)[0])
+        eventEmitter.emit('line:jump', lineNumber)
+        return
+      }
+
+      // this will match the old link format storage.key-note.key
+      // e.g.
+      // 877f99c3268608328037-1c211eb7dcb463de6490
+      const regexIsLegacyNoteLink = /^(.{20})-(.{20})$/
+      if (regexIsLegacyNoteLink.test(linkHash)) {
+        eventEmitter.emit('list:jump', linkHash.split('-')[1])
+        return
+      }
+
+      const regexIsTagLink = /^:tag:#([\w]+)$/
+      if (regexIsTagLink.test(rawHref)) {
+        const tag = rawHref.match(regexIsTagLink)[1]
+        eventEmitter.emit('dispatch:push', `/tags/${encodeURIComponent(tag)}`)
+        return
+      }
+    }
+    onMouseDown(e) {
       const { target } = e
       if (!e[modifier]) {
         return
       }
 
+      const rawHref = e.target.innerText.trim().slice(1, -1) // get link text from markdown text
+
+      if (!rawHref) return // not checked href because parser will create file://... string for [empty link]()
+
+      const parser = document.createElement('a')
+      parser.href = rawHref
+      const { href, hash } = parser
+
+      if (!rawHref) return // not checked href because parser will create file://... string for [empty link]()
+
+      const linkHash = hash === '' ? rawHref : hash // needed because we're having special link formats that are removed by parser e.g. :line:10
+
+      this.specialLinkHandler(target, rawHref, linkHash)
+
       const url = this.getUrl(target)
+
+      // all special cases handled --> other case
       if (url) {
         e.preventDefault()
 
         shell.openExternal(url)
       }
     }
-    onMouseEnter (e) {
+    onMouseEnter(e) {
       const { target } = e
 
       const url = this.getUrl(target)
       if (url) {
         if (e[modifier]) {
-          target.classList.add('CodeMirror-activeline-background', 'CodeMirror-hyperlink')
+          target.classList.add(
+            'CodeMirror-activeline-background',
+            'CodeMirror-hyperlink'
+          )
         } else {
           target.classList.add('CodeMirror-activeline-background')
         }
@@ -87,14 +174,17 @@
         this.showInfo(target)
       }
     }
-    onMouseLeave (e) {
+    onMouseLeave(e) {
       if (this.tooltip.parentElement === this.lineDiv) {
-        e.target.classList.remove('CodeMirror-activeline-background', 'CodeMirror-hyperlink')
+        e.target.classList.remove(
+          'CodeMirror-activeline-background',
+          'CodeMirror-hyperlink'
+        )
 
         this.lineDiv.removeChild(this.tooltip)
       }
     }
-    onMouseMove (e) {
+    onMouseMove(e) {
       if (this.tooltip.parentElement === this.lineDiv) {
         if (e[modifier]) {
           e.target.classList.add('CodeMirror-hyperlink')
@@ -103,25 +193,25 @@
         }
       }
     }
-    showInfo (relatedTo) {
+    showInfo(relatedTo) {
       const b1 = relatedTo.getBoundingClientRect()
       const b2 = this.lineDiv.getBoundingClientRect()
       const tdiv = this.tooltip
 
-      tdiv.style.left = (b1.left - b2.left) + 'px'
+      tdiv.style.left = b1.left - b2.left + 'px'
       this.lineDiv.appendChild(tdiv)
 
       const b3 = tdiv.getBoundingClientRect()
       const top = b1.top - b2.top - b3.height - yOffset
       if (top < 0) {
-        tdiv.style.top = (b1.top - b2.top + b1.height + yOffset) + 'px'
+        tdiv.style.top = b1.top - b2.top + b1.height + yOffset + 'px'
       } else {
         tdiv.style.top = top + 'px'
       }
     }
   }
 
-  CodeMirror.defineOption('hyperlink', true, (cm) => {
+  CodeMirror.defineOption('hyperlink', true, cm => {
     const addon = new HyperLink(cm)
   })
 })