From c0d7652f25242b95a04c8b36cd14ed3da1ec12cc Mon Sep 17 00:00:00 2001
From: jocs <ransixi@gmail.com>
Date: Fri, 5 Oct 2018 14:59:13 +0800
Subject: [PATCH] feat: add tooltip to editor

---
 src/muya/lib/config.js                        |  2 +-
 src/muya/lib/index.js                         |  4 ++
 .../renderBlock/renderContainerBlock.js       |  5 +-
 src/muya/lib/ui/tooltip/index.css             | 28 +++++++++
 src/muya/lib/ui/tooltip/index.js              | 61 +++++++++++++++++++
 5 files changed, 96 insertions(+), 4 deletions(-)
 create mode 100644 src/muya/lib/ui/tooltip/index.css
 create mode 100644 src/muya/lib/ui/tooltip/index.js

diff --git a/src/muya/lib/config.js b/src/muya/lib/config.js
index f9beddf5..dbd6cf8e 100644
--- a/src/muya/lib/config.js
+++ b/src/muya/lib/config.js
@@ -220,7 +220,7 @@ export const TABLE_TOOLS = [{
 
 export const HTML_TOOLS = [{
   label: 'delete',
-  title: 'Delete HTML block',
+  title: 'Delete HTML',
   icon: 'icon-del'
 }]
 
diff --git a/src/muya/lib/index.js b/src/muya/lib/index.js
index a4367612..99c998a8 100644
--- a/src/muya/lib/index.js
+++ b/src/muya/lib/index.js
@@ -12,6 +12,7 @@ import ExportMarkdown from './utils/exportMarkdown'
 import ExportHtml from './utils/exportHtml'
 import { checkEditImage } from './utils/checkEditImage'
 import TablePicker from './tablePicker'
+import ToolTip from './ui/tooltip'
 
 import './assets/symbolIcon' // import symbol icons
 import './assets/symbolIcon/index.css'
@@ -58,6 +59,9 @@ class Muya {
     const { container, contentState, eventCenter } = this
     contentState.stateRender.setContainer(container.children[0])
 
+    // init tooltip
+    this.tooltip = new ToolTip(this)
+
     eventCenter.subscribe('editEmoji', throttle(this.subscribeEditEmoji.bind(this), 200))
     this.dispatchEditEmoji()
     eventCenter.subscribe('editLanguage', throttle(this.subscribeEditLanguage.bind(this)))
diff --git a/src/muya/lib/parser/render/renderBlock/renderContainerBlock.js b/src/muya/lib/parser/render/renderBlock/renderContainerBlock.js
index 10a850e0..e8c2bc61 100644
--- a/src/muya/lib/parser/render/renderBlock/renderContainerBlock.js
+++ b/src/muya/lib/parser/render/renderBlock/renderContainerBlock.js
@@ -45,14 +45,13 @@ export default function renderContainerBlock (block, cursor, activeBlocks, match
     }
   }
   if (block.type === 'li' && block.label) {
-    const { label, title } = block
+    const { label, title: tooltip } = block
     const { align } = activeBlocks[0]
 
     if (align && block.label === align) {
       selector += '.active'
     }
-    Object.assign(data.dataset, { label })
-    Object.assign(data.attrs, { title })
+    Object.assign(data.dataset, { label, tooltip })
   }
   if (block.type === 'li' && block.listItemType) {
     selector += `.${CLASS_OR_ID['AG_LIST_ITEM']}`
diff --git a/src/muya/lib/ui/tooltip/index.css b/src/muya/lib/ui/tooltip/index.css
new file mode 100644
index 00000000..9ca37cd2
--- /dev/null
+++ b/src/muya/lib/ui/tooltip/index.css
@@ -0,0 +1,28 @@
+.ag-tooltip {
+  transition: opacity .2s, transform .2s;
+  position: absolute;
+  font-size: 12px;
+  padding: 5px 7px;
+  border-radius: 5px;
+  background: rgb(50, 50, 50);
+  color: rgb(255, 255, 255);
+  z-index: 1000;
+  opacity: 0;
+}
+
+.ag-tooltip.active {
+  opacity: 1;
+  transform: translateY(-5px);
+}
+
+.ag-tooltip:after {
+  top: 0;
+  left: 50%;
+  content: '';
+  background: inherit;
+  width: 8px;
+  height: 8px;
+  position: absolute;
+  display: block;
+  transform: rotate(45deg) translateX(-50%);
+}
\ No newline at end of file
diff --git a/src/muya/lib/ui/tooltip/index.js b/src/muya/lib/ui/tooltip/index.js
new file mode 100644
index 00000000..6a225f2a
--- /dev/null
+++ b/src/muya/lib/ui/tooltip/index.js
@@ -0,0 +1,61 @@
+import './index.css'
+
+const position = (source, ele) => {
+  const rect = source.getBoundingClientRect()
+  const { top, right, height } = rect
+
+  Object.assign(ele.style, {
+    top: `${top + height + 10}px`,
+    left: `${right - ele.offsetWidth / 2 - 3}px`
+  })
+}
+
+class Tooltip {
+  constructor (muya) {
+    this.muya = muya
+    this.cache = new WeakMap()
+    const { container, eventCenter } = this.muya
+
+    eventCenter.attachDOMEvent(container, 'mouseover', this.mouseOver.bind(this))
+  }
+
+  mouseOver (event) {
+    const { target } = event
+    const toolTipTarget = target.closest('[data-tooltip]')
+    const { eventCenter } = this.muya
+    if (toolTipTarget && !this.cache.has(toolTipTarget)) {
+      const tooltip = toolTipTarget.getAttribute('data-tooltip')
+      const tooltipEle = document.createElement('div')
+      tooltipEle.textContent = tooltip
+      tooltipEle.classList.add('ag-tooltip')
+      document.body.appendChild(tooltipEle)
+      position(toolTipTarget, tooltipEle)
+
+      this.cache.set(toolTipTarget, tooltipEle)
+
+      setTimeout(() => {
+        tooltipEle.classList.add('active')
+      })
+
+      const timer = setInterval(() => {
+        if (!document.body.contains(toolTipTarget)) {
+          this.mouseLeave({ target: toolTipTarget })
+          clearInterval(timer)
+        }
+      }, 300)
+
+      eventCenter.attachDOMEvent(toolTipTarget, 'mouseleave', this.mouseLeave.bind(this))
+    }
+  }
+
+  mouseLeave (event) {
+    const { target } = event
+    if (this.cache.has(target)) {
+      const tooltipEle = this.cache.get(target)
+      tooltipEle.remove()
+      this.cache.delete(target)
+    }
+  }
+}
+
+export default Tooltip