Detect batch cursor move

src/text-editor-presenter.coffee

@@ -44,11 +44,30 @@ class TextEditorPresenter
     @model.setHorizontalScrollbarHeight(@measuredHorizontalScrollbarHeight) if @measuredHorizontalScrollbarHeight?
 
   observeModel: ->
+    @disposables.add @model.onWillMoveCursors =>
+      @batchMode = true
+
+    @disposables.add @model.onDidMoveCursors =>
+      @batchMode = false
+
+      @updateStartRow()
+      @updateEndRow()
+      @updateHeightState()
+      @didStartScrolling()
+      @updateVerticalScrollState()
+      @updateHorizontalScrollState()
+      @updateScrollbarsState()
+      @updateContentState()
+      @updateDecorations()
+      @updateLinesState()
+      @updateGutterState()
+      @updateLineNumbersState()
+
     @disposables.add @model.onWillSelectMultiple =>
-      @multipleSelectionBatch = true
+      @batchMode = true
 
     @disposables.add @model.onDidSelectMultiple =>
-      @multipleSelectionBatch = false
+      @batchMode = false
 
       @updateStartRow()
       @updateEndRow()
@@ -64,7 +83,7 @@ class TextEditorPresenter
       @updateLineNumbersState()
 
     @disposables.add @model.onDidChange =>
-      return if @multipleSelectionBatch
+      return if @batchMode
 
       @updateContentDimensions()
       @updateEndRow()
@@ -537,7 +556,7 @@ class TextEditorPresenter
     unless @scrollTop is scrollTop or Number.isNaN(scrollTop)
       @scrollTop = scrollTop
       @model.setScrollTop(scrollTop)
-      return if @multipleSelectionBatch
+      return if @batchMode
 
       @updateStartRow()
       @updateEndRow()
@@ -785,6 +804,8 @@ class TextEditorPresenter
     @disposables.add(decorationDisposables)
 
   decorationMarkerDidChange: (decoration, change) ->
+    return if @batchMode
+
     if decoration.isType('line') or decoration.isType('line-number')
       return if change.textChanged
 
@@ -813,7 +834,7 @@ class TextEditorPresenter
       @updateOverlaysState()
 
   didDestroyDecoration: (decoration) ->
-    return if @multipleSelectionBatch
+    return if @batchMode
 
     if decoration.isType('line') or decoration.isType('line-number')
       @removeFromLineDecorationCaches(decoration, decoration.getMarker().getScreenRange())
@@ -835,7 +856,7 @@ class TextEditorPresenter
   didAddDecoration: (decoration) ->
     @observeDecoration(decoration)
 
-    return if @multipleSelectionBatch
+    return if @batchMode
     if decoration.isType('line') or decoration.isType('line-number')
       @addToLineDecorationCaches(decoration, decoration.getMarker().getScreenRange())
       @updateLinesState() if decoration.isType('line')

src/text-editor.coffee

@@ -1804,8 +1804,16 @@ class TextEditor extends Model
     @emitter.emit 'did-remove-cursor', cursor
 
   moveCursors: (fn) ->
+    @emitter.emit "will-move-cursors"
     fn(cursor) for cursor in @getCursors()
     @mergeCursors()
+    @emitter.emit "did-move-cursors"
+
+  onWillMoveCursors: (callback) ->
+    @emitter.on "will-move-cursors", callback
+
+  onDidMoveCursors: (callback) ->
+    @emitter.on "did-move-cursors", callback
 
   cursorMoved: (event) ->
     @emit 'cursor-moved', event