ignore key events if cursor is not set (#906)

src/muya/lib/eventHandler/clickEvent.js

@@ -18,21 +18,19 @@ class ClickEvent {
       // Hide format box
       eventCenter.dispatch('muya-format-picker', { reference: null })
 
-      // Commit native cursor position because right-clicking doesn't update the cursor postion.
       const { start, end } = selection.getCursorRange()
+
+      // Cursor out of editor
       if (!start || !end) {
-        // right click on paragraph icons
         return
       }
-      // if you want to show `insert row or column`, you need to put cursor on cell text...
+
+      // Commit native cursor position because right-clicking doesn't update the cursor postion.
       contentState.cursor = {
         start,
         end
       }
 
-      // TODO: Should we render to update the cursor or is this not necessary because we'll render
-      // when leaving or clicking on the context menu?
-
       const sectionChanges = contentState.selectionChange(contentState.cursor)
       eventCenter.dispatch('contextmenu', event, sectionChanges)
     }
@@ -68,7 +66,7 @@ class ClickEvent {
           formatType: 'image',
           data: event.target.getAttribute('src')
         })
-        selectionText(markedImageText)  
+        selectionText(markedImageText)
       } else if (mathText) {
         selectionText(mathText)
       } else if (rubyText) {

src/muya/lib/eventHandler/keyboard.js

@@ -62,10 +62,14 @@ class Keyboard {
         return
       }
 
-      // prevent dispatch `selectionChange` and `selectionFormats` by click the toolbar of table/html block and front icons
+      // Cursor outside editor area or over not editable elements.
       if (event.target.closest('[contenteditable=false]')) {
         return
       }
+      const { start, end } = selection.getCursorRange()
+      if (!start || !end) {
+        return
+      }
 
       if (timer) clearTimeout(timer)
       timer = setTimeout(() => {
@@ -199,7 +203,7 @@ class Keyboard {
       if (!start || !end) {
         return
       }
- 
+
       if (
         !this.isComposed
       ) {