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fix: paragraphCtrl cursor may be null (#855)

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This commit is contained in:
Felix Häusler 2019-04-06 00:52:49 +02:00 committed by Ran Luo
parent 30a1423d02
commit b0ae437ba4
1 changed files with 4 additions and 0 deletions
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4
src/muya/lib/contentState/paragraphCtrl.js
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@ -18,6 +18,10 @@ const getCurrentLevel = type => {
const paragraphCtrl = ContentState => { const paragraphCtrl = ContentState => {
ContentState.prototype.selectionChange = function (cursor) { ContentState.prototype.selectionChange = function (cursor) {
const { start, end } = cursor || selection.getCursorRange() const { start, end } = cursor || selection.getCursorRange()
if (!start || !end) {
// TODO: Throw an exception and try to fix this later (GH#848).
throw new Error('selectionChange: expected cursor but cursor is null.')
}
const cursorCoords = selection.getCursorCoords() const cursorCoords = selection.getCursorCoords()
const startBlock = this.getBlock(start.key) const startBlock = this.getBlock(start.key)
const endBlock = this.getBlock(end.key) const endBlock = this.getBlock(end.key)