prosemirror-transform - npm Package Compare versions

Comparing version 1.0.10 to 1.1.0

CHANGELOG.md

@@ -0,1 +1,9 @@
+## 1.1.0 (2018-06-20)
+
+### New features
+
+[`Transform.getMirror`](https://prosemirror.net/docs/ref/#transform.Transform.getMirror), usable in obscure circumstances for inspecting the mirroring structure or a transform, is now a public method.
+
+New utility function [`dropPoint`](https://prosemirror.net/docs/ref/#transform.dropPoint), which tries to find a valid position for dropping a slice near a given document position.
+
 ## 1.0.10 (2018-04-15)
@@ -2,0 +10,0 @@

package.json

 {
   "name": "prosemirror-transform",
-  "version": "1.0.10",
+  "version": "1.1.0",
   "description": "ProseMirror document transformations",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

src/index.js

 export {Transform, TransformError} from "./transform"
 export {Step, StepResult} from "./step"
-export {joinPoint, canJoin, canSplit, insertPoint, liftTarget, findWrapping} from "./structure"
+export {joinPoint, canJoin, canSplit, insertPoint, dropPoint, liftTarget, findWrapping} from "./structure"
 export {StepMap, MapResult, Mapping} from "./map"
@@ -5,0 +5,0 @@ export {AddMarkStep, RemoveMarkStep} from "./mark_step"

src/map.js

@@ -177,12 +177,2 @@ // Mappable:: interface
 
-  getMirror(n) {
-    if (this.mirror) for (let i = 0; i < this.mirror.length; i++)
-      if (this.mirror[i] == n) return this.mirror[i + (i % 2 ? -1 : 1)]
-  }
-
-  setMirror(n, m) {
-    if (!this.mirror) this.mirror = []
-    this.mirror.push(n, m)
-  }
-
   // :: (StepMap, ?number)
@@ -207,2 +197,16 @@ // Add a step map to the end of this mapping. If `mirrors` is
 
+  // :: (number) → ?number
+  // Finds the offset of the step map that mirrors the map at the
+  // given offset, in this mapping (as per the second argument to
+  // `appendMap`).
+  getMirror(n) {
+    if (this.mirror) for (let i = 0; i < this.mirror.length; i++)
+      if (this.mirror[i] == n) return this.mirror[i + (i % 2 ? -1 : 1)]
+  }
+
+  setMirror(n, m) {
+    if (!this.mirror) this.mirror = []
+    this.mirror.push(n, m)
+  }
+
   // :: (Mapping)
@@ -209,0 +213,0 @@ // Append the inverse of the given mapping to this one.

src/structure.js

@@ -262,1 +262,24 @@ import {Slice, Fragment} from "prosemirror-model"
 }
+
+// :: (Node, number, Slice) → ?number
+// Finds a position at or around the given position where the given
+// slice can be inserted. Will look at parent nodes' nearest boundary
+// and try there, even if the original position wasn't directly at the
+// start or end of that node. Returns null when no position was found.
+export function dropPoint(doc, pos, slice) {
+  let $pos = doc.resolve(pos)
+  if (!slice.content.size) return pos
+  let content = slice.content
+  for (let i = 0; i < slice.openStart; i++) content = content.firstChild.content
+  for (let pass = 1; pass <= (slice.openStart == 0 && slice.length ? 2 : 1); pass++) {
+    for (let d = $pos.depth; d >= 0; d--) {
+      let bias = d == $pos.depth ? 0 : $pos.pos <= ($pos.start(d + 1) + $pos.end(d + 1)) / 2 ? -1 : 1
+      let insertPos = $pos.index(d) + (bias > 0 ? 1 : 0)
+      if (pass == 1
+          ? $pos.node(d).canReplace(insertPos, insertPos, content)
+          : $pos.node(d).contentMatchAt(insertPos).findWrapping(content.firstChild))
+        return bias == 0 ? $pos.pos : bias < 0 ? $pos.before(d + 1) : $pos.after(d + 1)
+    }
+  }
+  return null
+}

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Improved metrics

Total package byte prevSize

283804

increased by2.04%

Lines of code

3001

increased by1.8%

No dependency changes