From 9a5653f1e3f47eae50738a5f7d90203fd8610a43 Mon Sep 17 00:00:00 2001
From: Dick Choi <fluke8259@gmail.com>
Date: Tue, 19 Jul 2016 02:38:23 +0900
Subject: [PATCH] preview on blur

---
 browser/components/CodeEditor.js      | 23 ++++++++++---------
 browser/components/MarkdownEditor.js  | 32 ++++++++++++++++++++++++++-
 browser/components/MarkdownPreview.js | 19 +++++++++++++++-
 3 files changed, 62 insertions(+), 12 deletions(-)

diff --git a/browser/components/CodeEditor.js b/browser/components/CodeEditor.js
index ea1d2db4..83bb8025 100644
--- a/browser/components/CodeEditor.js
+++ b/browser/components/CodeEditor.js
@@ -13,18 +13,19 @@ export default class CodeEditor extends React.Component {
 
     this.changeHandler = (e) => this.handleChange(e)
     this.blurHandler = (e) => {
-      if (e.relatedTarget === null) {
-        return
+      e.stopPropagation()
+      let el = e.relatedTarget
+      let isStillFocused = false
+      while (el != null) {
+        if (el === this.refs.root) {
+          isStillFocused = true
+          break
+        }
+        el = el.parentNode
       }
+      console.log(isStillFocused)
 
-      let isFocusingToSearch = e.relatedTarget.className && e.relatedTarget.className.split(' ').some((clss) => {
-        return clss === 'ace_search_field' || clss === 'ace_searchbtn' || clss === 'ace_replacebtn' || clss === 'ace_searchbtn_close' || clss === 'ace_text-input'
-      })
-      if (isFocusingToSearch) {
-        return
-      }
-
-      if (this.props.onBlur) this.props.onBlur(e)
+      if (!isStillFocused && this.props.onBlur != null) this.props.onBlur(e)
     }
 
     this.killedBuffer = ''
@@ -230,6 +231,8 @@ export default class CodeEditor extends React.Component {
           ? 'CodeEditor'
           : `CodeEditor ${className}`
         }
+        ref='root'
+        tabIndex='-1'
         style={{
           fontFamily: fontFamily.join(', ')
         }}
diff --git a/browser/components/MarkdownEditor.js b/browser/components/MarkdownEditor.js
index 1d82cece..f99f6f77 100644
--- a/browser/components/MarkdownEditor.js
+++ b/browser/components/MarkdownEditor.js
@@ -9,7 +9,7 @@ class MarkdownEditor extends React.Component {
     super(props)
 
     this.state = {
-      status: 'CODE'
+      status: 'PREVIEW'
     }
   }
 
@@ -45,6 +45,32 @@ class MarkdownEditor extends React.Component {
     }
   }
 
+  handleBlur (e) {
+    let { config } = this.props
+    if (config.editor.switchPreview === 'BLUR') {
+      this.setState({
+        status: 'PREVIEW'
+      }, () => {
+        this.refs.preview.focus()
+      })
+    }
+  }
+
+  handlePreviewMouseDown (e) {
+    this.previewMouseDownedAt = new Date()
+  }
+
+  handlePreviewMouseUp (e) {
+    let { config } = this.props
+    if (config.editor.switchPreview === 'BLUR' && new Date() - this.previewMouseDownedAt < 150) {
+      this.setState({
+        status: 'CODE'
+      }, () => {
+        this.refs.code.focus()
+      })
+    }
+  }
+
   focus () {
     if (this.state.status === 'PREVIEW') {
       this.setState({
@@ -77,6 +103,7 @@ class MarkdownEditor extends React.Component {
           : `MarkdownEditor ${className}`
         }
         onContextMenu={(e) => this.handleContextMenu(e)}
+        tabIndex='-1'
       >
         <CodeEditor styleName='codeEditor'
           ref='code'
@@ -88,6 +115,7 @@ class MarkdownEditor extends React.Component {
           indentType={config.editor.indentType}
           indentSize={editorIndentSize}
           onChange={(e) => this.handleChange(e)}
+          onBlur={(e) => this.handleBlur(e)}
         />
         <MarkdownPreview styleName={this.state.status === 'PREVIEW'
             ? 'preview'
@@ -103,6 +131,8 @@ class MarkdownEditor extends React.Component {
           onContextMenu={(e) => this.handleContextMenu(e)}
           tabIndex='0'
           value={value}
+          onMouseUp={(e) => this.handlePreviewMouseUp(e)}
+          onMouseDown={(e) => this.handlePreviewMouseDown(e)}
         />
       </div>
     )
diff --git a/browser/components/MarkdownPreview.js b/browser/components/MarkdownPreview.js
index 192e12e1..97108c3f 100644
--- a/browser/components/MarkdownPreview.js
+++ b/browser/components/MarkdownPreview.js
@@ -7,6 +7,7 @@ const markdownStyle = require('!!css!stylus?sourceMap!./markdown.styl')[0][1]
 const { shell } = require('electron')
 const goExternal = function (e) {
   e.preventDefault()
+  e.stopPropagation()
   shell.openExternal(e.target.href)
 }
 
@@ -24,20 +25,35 @@ export default class MarkdownPreview extends React.Component {
     super(props)
 
     this.contextMenuHandler = (e) => this.handleContextMenu(e)
+    this.mouseDownHandler = (e) => this.handleMouseDown(e)
+    this.mouseUpHandler = (e) => this.handleMouseUp(e)
   }
 
   handleContextMenu (e) {
     this.props.onContextMenu(e)
   }
 
+  handleMouseDown (e) {
+    if (this.props.onMouseDown != null) this.props.onMouseDown(e)
+  }
+
+  handleMouseUp (e) {
+    if (this.props.onMouseUp != null) this.props.onMouseUp(e)
+  }
+
   componentDidMount () {
     this.refs.root.setAttribute('sandbox', 'allow-same-origin')
     this.refs.root.contentWindow.document.body.addEventListener('contextmenu', this.contextMenuHandler)
     this.rewriteIframe()
+
+    this.refs.root.contentWindow.document.addEventListener('mousedown', this.mouseDownHandler)
+    this.refs.root.contentWindow.document.addEventListener('mouseup', this.mouseUpHandler)
   }
 
   componentWillUnmount () {
     this.refs.root.contentWindow.document.body.removeEventListener('contextmenu', this.contextMenuHandler)
+    this.refs.root.contentWindow.document.removeEventListener('mousedown', this.mouseDownHandler)
+    this.refs.root.contentWindow.document.removeEventListener('mouseup', this.mouseUpHandler)
   }
 
   componentDidUpdate (prevProps) {
@@ -55,6 +71,7 @@ export default class MarkdownPreview extends React.Component {
       el.removeEventListener('click', goExternal)
     })
 
+
     let { value, fontFamily, fontSize, codeBlockFontFamily, lineNumber, codeBlockTheme } = this.props
     fontFamily = _.isString(fontFamily) && fontFamily.trim().length > 0
       ? [fontFamily].concat(defaultFontFamily)
@@ -95,7 +112,7 @@ export default class MarkdownPreview extends React.Component {
     this.refs.root.contentWindow.document.body.innerHTML = markdown(value)
 
     Array.prototype.forEach.call(this.refs.root.contentWindow.document.querySelectorAll('a'), (el) => {
-      el.addEventListener('click', goExternal)
+      el.addEventListener('mousedown', goExternal)
     })
   }