remove the void text content restriction, closes #1504 (#1663)

packages/slate-plain-serializer/test/serialize/block-with-is-void.js

@@ -10,4 +10,4 @@ export const input = (
   </value>
 )
 
-export const output = ' '
+export const output = ''

packages/slate-plain-serializer/test/serialize/inline-with-is-void.js

@@ -12,4 +12,4 @@ export const input = (
   </value>
 )
 
-export const output = ' '
+export const output = ''

packages/slate-react/src/components/leaf.js

@@ -116,28 +116,38 @@ class Leaf extends React.Component {
   renderText() {
     const { block, node, parent, text, index, leaves } = this.props
 
-    // COMPAT: If the text is empty and the only child, we need to render a
-    // line break when copying and pasting to support expected plain text.
-    if (text == '' && parent.kind == 'block' && parent.text == '') {
-      return <span data-slate-zero-width="n">{'\u200B'}</span>
-    }
-
     // COMPAT: Render text inside void nodes with a zero-width space.
     // So the node can contain selection but the text is not visible.
-    if (parent.isVoid) return <span data-slate-zero-width="z">{'\u200B'}</span>
+    if (parent.isVoid) {
+      return <span data-slate-zero-width="z">{'\u200B'}</span>
+    }
+
+    // COMPAT: If this is the last text node in an empty block, render a zero-
+    // width space that will convert into a line break when copying and pasting
+    // to support expected plain text.
+    if (
+      text === '' &&
+      parent.kind === 'block' &&
+      parent.text === '' &&
+      parent.nodes.size === 1
+    ) {
+      return <span data-slate-zero-width="n">{'\u200B'}</span>
+    }
 
     // COMPAT: If the text is empty, it's because it's on the edge of an inline
     // void node, so we render a zero-width space so that the selection can be
     // inserted next to it still.
-    if (text == '') return <span data-slate-zero-width="z">{'\u200B'}</span>
+    if (text === '') {
+      return <span data-slate-zero-width="z">{'\u200B'}</span>
+    }
 
     // COMPAT: Browsers will collapse trailing new lines at the end of blocks,
     // so we need to add an extra trailing new lines to prevent that.
     const lastText = block.getLastText()
     const lastChar = text.charAt(text.length - 1)
-    const isLastText = node == lastText
-    const isLastLeaf = index == leaves.size - 1
-    if (isLastText && isLastLeaf && lastChar == '\n') return `${text}\n`
+    const isLastText = node === lastText
+    const isLastLeaf = index === leaves.size - 1
+    if (isLastText && isLastLeaf && lastChar === '\n') return `${text}\n`
 
     // Otherwise, just return the text.
     return text

packages/slate/src/changes/at-range.js

@@ -298,25 +298,8 @@ Changes.deleteLineBackwardAtRange = (change, range, options) => {
   const { startKey, startOffset } = range
   const startBlock = document.getClosestBlock(startKey)
   const offset = startBlock.getOffset(startKey)
-  const startWithVoidInline =
-    startBlock.nodes.size > 1 &&
-    startBlock.nodes.get(0).text == '' &&
-    startBlock.nodes.get(1).object == 'inline'
-
-  let o = offset + startOffset
-
-  // If line starts with an void inline node, the text node inside this inline
-  // node disturbs the offset. Ignore this inline node and delete it afterwards.
-  if (startWithVoidInline) {
-    o -= 1
-  }
-
+  const o = offset + startOffset
   change.deleteBackwardAtRange(range, o, options)
-
-  // Delete the remaining first inline node if needed.
-  if (startWithVoidInline) {
-    change.deleteBackward()
-  }
 }
 
 /**
@@ -362,27 +345,22 @@ Changes.deleteBackwardAtRange = (change, range, n = 1, options = {}) => {
     return
   }
 
+  const voidParent = document.getClosestVoid(startKey)
+
+  // If there is a void parent, delete it.
+  if (voidParent) {
+    change.removeNodeByKey(voidParent.key, { normalize })
+    return
+  }
+
   const block = document.getClosestBlock(startKey)
 
-  // If the closest block is void, delete it.
-  if (block && block.isVoid) {
-    change.removeNodeByKey(block.key, { normalize })
-    return
-  }
-
   // If the closest is not void, but empty, remove it
-  if (block && !block.isVoid && block.isEmpty && document.nodes.size !== 1) {
+  if (block && block.isEmpty && document.nodes.size !== 1) {
     change.removeNodeByKey(block.key, { normalize })
     return
   }
 
-  // If the closest inline is void, delete it.
-  const inline = document.getClosestInline(startKey)
-  if (inline && inline.isVoid) {
-    change.removeNodeByKey(inline.key, { normalize })
-    return
-  }
-
   // If the range is at the start of the document, abort.
   if (range.isAtStartOf(document)) {
     return
@@ -394,17 +372,11 @@ Changes.deleteBackwardAtRange = (change, range, n = 1, options = {}) => {
   if (range.isAtStartOf(text)) {
     const prev = document.getPreviousText(text.key)
     const prevBlock = document.getClosestBlock(prev.key)
-    const prevInline = document.getClosestInline(prev.key)
+    const prevVoid = document.getClosestVoid(prev.key)
 
-    // If the previous block is void, remove it.
-    if (prevBlock && prevBlock.isVoid) {
-      change.removeNodeByKey(prevBlock.key, { normalize })
-      return
-    }
-
-    // If the previous inline is void, remove it.
-    if (prevInline && prevInline.isVoid) {
-      change.removeNodeByKey(prevInline.key, { normalize })
+    // If the previous text node has a void parent, remove it.
+    if (prevVoid) {
+      change.removeNodeByKey(prevVoid.key, { normalize })
       return
     }
 
@@ -449,13 +421,6 @@ Changes.deleteBackwardAtRange = (change, range, n = 1, options = {}) => {
     }
   }
 
-  // If the focus node is inside a void, go up until right after it.
-  if (document.hasVoidParent(node.key)) {
-    const parent = document.getClosestVoid(node.key)
-    node = document.getNextText(parent.key)
-    offset = 0
-  }
-
   range = range.merge({
     focusKey: node.key,
     focusOffset: offset,
@@ -548,16 +513,18 @@ Changes.deleteForwardAtRange = (change, range, n = 1, options = {}) => {
     return
   }
 
-  const block = document.getClosestBlock(startKey)
+  const voidParent = document.getClosestVoid(startKey)
 
-  // If the closest block is void, delete it.
-  if (block && block.isVoid) {
-    change.removeNodeByKey(block.key, { normalize })
+  // If the node has a void parent, delete it.
+  if (voidParent) {
+    change.removeNodeByKey(voidParent.key, { normalize })
     return
   }
 
+  const block = document.getClosestBlock(startKey)
+
   // If the closest is not void, but empty, remove it
-  if (block && !block.isVoid && block.isEmpty && document.nodes.size !== 1) {
+  if (block && block.isEmpty && document.nodes.size !== 1) {
     const nextBlock = document.getNextBlock(block.key)
     change.removeNodeByKey(block.key, { normalize })
     if (nextBlock && nextBlock.key) {
@@ -566,13 +533,6 @@ Changes.deleteForwardAtRange = (change, range, n = 1, options = {}) => {
     return
   }
 
-  // If the closest inline is void, delete it.
-  const inline = document.getClosestInline(startKey)
-  if (inline && inline.isVoid) {
-    change.removeNodeByKey(inline.key, { normalize })
-    return
-  }
-
   // If the range is at the start of the document, abort.
   if (range.isAtEndOf(document)) {
     return
@@ -584,17 +544,11 @@ Changes.deleteForwardAtRange = (change, range, n = 1, options = {}) => {
   if (range.isAtEndOf(text)) {
     const next = document.getNextText(text.key)
     const nextBlock = document.getClosestBlock(next.key)
-    const nextInline = document.getClosestInline(next.key)
+    const nextVoid = document.getClosestVoid(next.key)
 
-    // If the previous block is void, remove it.
-    if (nextBlock && nextBlock.isVoid) {
-      change.removeNodeByKey(nextBlock.key, { normalize })
-      return
-    }
-
-    // If the previous inline is void, remove it.
-    if (nextInline && nextInline.isVoid) {
-      change.removeNodeByKey(nextInline.key, { normalize })
+    // If the next text node has a void parent, remove it.
+    if (nextVoid) {
+      change.removeNodeByKey(nextVoid.key, { normalize })
       return
     }
 

packages/slate/src/constants/core-schema-rules.js

@@ -93,32 +93,7 @@ const CORE_SCHEMA_RULES = [
   },
 
   /**
-   * Ensure that void nodes contain a text node with a single space of text.
-   *
-   * @type {Object}
-   */
-
-  {
-    validateNode(node) {
-      if (!node.isVoid) return
-      if (node.object != 'block' && node.object != 'inline') return
-      if (node.text == ' ' && node.nodes.size == 1) return
-
-      return change => {
-        const text = Text.create(' ')
-        const index = node.nodes.size
-
-        change.insertNodeByKey(node.key, index, text, { normalize: false })
-
-        node.nodes.forEach(child => {
-          change.removeNodeByKey(child.key, { normalize: false })
-        })
-      }
-    },
-  },
-
-  /**
-   * Ensure that inline nodes are never empty.
+   * Ensure that inline non-void nodes are never empty.
    *
    * This rule is applied to all blocks, because when they contain an empty
    * inline, we need to remove the inline from that parent block. If `validate`
@@ -131,9 +106,11 @@ const CORE_SCHEMA_RULES = [
   {
     validateNode(node) {
       if (node.object != 'block') return
+
       const invalids = node.nodes.filter(
-        n => n.object == 'inline' && n.text == ''
+        n => n.object === 'inline' && n.isVoid === false && n.text === ''
       )
+
       if (!invalids.size) return
 
       return change => {
@@ -167,7 +144,9 @@ const CORE_SCHEMA_RULES = [
 
         const prev = index > 0 ? node.nodes.get(index - 1) : null
         const next = node.nodes.get(index + 1)
-        // We don't test if "prev" is inline, since it has already been processed in the loop
+
+        // We don't test if "prev" is inline, since it has already been
+        // processed in the loop
         const insertBefore = !prev
         const insertAfter = !next || next.object == 'inline'
 

packages/slate/src/models/node.js

@@ -1692,7 +1692,7 @@ class Node {
    */
 
   hasVoidParent(key) {
-    return !!this.getClosest(key, parent => parent.isVoid)
+    return !!this.getClosestVoid(key)
   }
 
   /**
@@ -2071,7 +2071,6 @@ memoize(
     'getPreviousText',
     'getTextAtOffset',
     'getTextsAtRangeAsArray',
-    'hasVoidParent',
     'validate',
   ],
   {

packages/slate/test/changes/at-current-range/delete-backward/empty-after-void-block.js

@@ -21,7 +21,6 @@ export const output = (
   <value>
     <document>
       <image>
-        {' '}
         <cursor />
       </image>
     </document>

packages/slate/test/changes/at-current-range/delete-forward/empty-before-void-block.js

@@ -21,7 +21,7 @@ export const output = (
   <value>
     <document>
       <image>
-        <cursor />{' '}
+        <cursor />
       </image>
     </document>
   </value>

packages/slate/test/changes/at-current-range/delete/non-void-block-as-first-with-void-siblings-only-non-void.js

@@ -13,7 +13,7 @@ export const input = (
         <anchor />one
       </paragraph>
       <image>
-        <focus />{' '}
+        <focus />
       </image>
       <paragraph>two</paragraph>
     </document>

packages/slate/test/changes/at-current-range/delete/non-void-block-as-first-with-void-siblings-partially-non-void-and-up-to-start-of-void.js

@@ -13,7 +13,7 @@ export const input = (
         on<anchor />e
       </paragraph>
       <image>
-        <focus />{' '}
+        <focus />
       </image>
       <paragraph>three</paragraph>
     </document>

packages/slate/test/changes/at-current-range/delete/non-void-block-as-first-with-void-siblings-partially-non-void-and-void.js

@@ -13,7 +13,6 @@ export const input = (
         on<anchor />e
       </paragraph>
       <image>
-        {' '}
         <focus />
       </image>
       <paragraph>three</paragraph>

packages/slate/test/changes/at-current-range/delete/void-block-as-first-with-non-void-siblings-select-void-end-and-next-word.js

@@ -10,7 +10,6 @@ export const input = (
   <value>
     <document>
       <image>
-        {' '}
         <anchor />
       </image>
       <paragraph>

packages/slate/test/changes/at-current-range/delete/void-blocks-as-first-with-non-void-siblings-only-first-void.js

@@ -10,10 +10,10 @@ export const input = (
   <value>
     <document>
       <image>
-        <anchor />{' '}
+        <anchor />
       </image>
       <image>
-        <focus />{' '}
+        <focus />
       </image>
       <paragraph>one</paragraph>
       <paragraph>two</paragraph>

packages/slate/test/changes/at-current-range/delete/void-inline-as-first-with-non-void-sibling.js

@@ -11,7 +11,7 @@ export const input = (
     <document>
       <paragraph>
         <emoji>
-          <anchor />{' '}
+          <anchor />
         </emoji>
         <focus />abc
       </paragraph>

packages/slate/test/changes/at-current-range/insert-block/is-void-end.js

@@ -10,8 +10,7 @@ export const input = (
   <value>
     <document>
       <image>
-        {' '}
-        <cursor />
+        text<cursor />
       </image>
       <paragraph>text</paragraph>
     </document>
@@ -21,7 +20,7 @@ export const input = (
 export const output = (
   <value>
     <document>
-      <image />
+      <image>text</image>
       <quote>
         <cursor />
       </quote>

packages/slate/test/changes/at-current-range/insert-block/is-void-start.js

@@ -10,7 +10,7 @@ export const input = (
   <value>
     <document>
       <image>
-        <cursor />{' '}
+        <cursor />text
       </image>
       <paragraph>text</paragraph>
     </document>
@@ -23,7 +23,7 @@ export const output = (
       <quote>
         <cursor />
       </quote>
-      <image />
+      <image>text</image>
       <paragraph>text</paragraph>
     </document>
   </value>

packages/slate/test/changes/at-current-range/insert-inline/block-end.js

@@ -24,7 +24,6 @@ export const output = (
     <document>
       <paragraph>
         word<emoji>
-          {' '}
           <cursor />
         </emoji>
       </paragraph>

packages/slate/test/changes/at-current-range/insert-inline/block-middle.js

@@ -24,7 +24,6 @@ export const output = (
     <document>
       <paragraph>
         wo<emoji>
-          {' '}
           <cursor />
         </emoji>rd
       </paragraph>

packages/slate/test/changes/at-current-range/insert-inline/block-start.js

@@ -24,7 +24,6 @@ export const output = (
     <document>
       <paragraph>
         <emoji>
-          {' '}
           <cursor />
         </emoji>word
       </paragraph>

packages/slate/test/changes/at-current-range/insert-inline/inline-middle.js

@@ -27,7 +27,6 @@ export const output = (
       <paragraph>
         <link>
           wo<emoji>
-            {' '}
             <cursor />
           </emoji>rd
         </link>

packages/slate/test/changes/at-current-range/insert-inline/is-empty.js

@@ -24,7 +24,6 @@ export const output = (
     <document>
       <paragraph>
         <emoji>
-          {' '}
           <cursor />
         </emoji>
       </paragraph>

packages/slate/test/changes/at-current-range/insert-inline/with-inline.js

@@ -27,7 +27,6 @@ export const output = (
     <document>
       <paragraph>
         wo<emoji>
-          {' '}
           <cursor />
         </emoji>rd
       </paragraph>

packages/slate/test/changes/at-current-range/set-block/with-is-void.js

@@ -23,7 +23,7 @@ export const output = (
   <value>
     <document>
       <image>
-        <cursor />{' '}
+        <cursor />word
       </image>
     </document>
   </value>

packages/slate/test/changes/at-current-range/set-inline/with-is-void.js

@@ -21,13 +21,13 @@ export const input = (
   </value>
 )
 
-// TODO: fix cursor placement
 export const output = (
   <value>
     <document>
       <paragraph>
-        <cursor />
-        <emoji />
+        <emoji>
+          <cursor />word
+        </emoji>
       </paragraph>
     </document>
   </value>

packages/slate/test/changes/by-key/remove-text-by-key/inline-void.js

@@ -12,7 +12,7 @@ export const input = (
       <paragraph>
         <emoji>
           <text key="a">
-            <cursor />{' '}
+            <cursor />a
           </text>
         </emoji>
       </paragraph>
@@ -24,8 +24,9 @@ export const output = (
   <value>
     <document>
       <paragraph>
-        <cursor />
-        <emoji />
+        <emoji>
+          <cursor />
+        </emoji>
       </paragraph>
     </document>
   </value>

packages/slate/test/changes/by-key/set-node-by-key/inline-with-is-void.js

@@ -25,8 +25,9 @@ export const output = (
   <value>
     <document>
       <paragraph>
-        <cursor />
-        <emoji />
+        <emoji>
+          <cursor />word
+        </emoji>
       </paragraph>
     </document>
   </value>

packages/slate/test/changes/general/call/call-no-arguments.js

@@ -28,7 +28,6 @@ export const output = (
   <value>
     <document>
       <image>
-        {' '}
         <cursor />
       </image>
       <paragraph>one</paragraph>

packages/slate/test/changes/general/call/call-with-arguments.js

@@ -28,7 +28,6 @@ export const output = (
   <value>
     <document>
       <image>
-        {' '}
         <cursor />
       </image>
       <paragraph>one</paragraph>

packages/slate/test/schema/custom/node-is-void-invalid-default.js

@@ -21,7 +21,7 @@ export const input = (
 export const output = (
   <value>
     <document>
-      <paragraph>{/* prettier-ignore */ ' '}</paragraph>
+      <paragraph />
     </document>
   </value>
 )

packages/slate/test/serializers/raw/deserialize/block-with-is-void.js

@@ -19,7 +19,7 @@ export const input = {
             leaves: [
               {
                 object: 'leaf',
-                text: ' ',
+                text: '',
                 marks: [],
               },
             ],

packages/slate/test/serializers/raw/deserialize/inline-with-is-void.js

@@ -35,7 +35,7 @@ export const input = {
                 leaves: [
                   {
                     object: 'leaf',
-                    text: ' ',
+                    text: '',
                     marks: [],
                   },
                 ],

packages/slate/test/serializers/raw/serialize/block-with-is-void.js

@@ -27,7 +27,7 @@ export const output = {
             leaves: [
               {
                 object: 'leaf',
-                text: ' ',
+                text: '',
                 marks: [],
               },
             ],

packages/slate/test/serializers/raw/serialize/inline-with-is-void.js

@@ -45,7 +45,7 @@ export const output = {
                 leaves: [
                   {
                     object: 'leaf',
-                    text: ' ',
+                    text: '',
                     marks: [],
                   },
                 ],