Improve UL/OL line implementation

#273

Author: zhuochun

lib/commands/style-line.coffee

@@ -58,25 +58,45 @@ class StyleLine
     line = @editor.lineTextForBufferRow(rows[0])
     isRemoveStyle = line && @isStyleOn(line) # else add style
 
+    lineIdx = 0
+    rowsToRemove = []
+
     # rows[0] = start of buffer rows, rows[1] = end of buffer rows
-    for row, i in ([rows[0]..rows[1]])
+    for row in ([rows[0]..rows[1]])
+      line = @editor.lineTextForBufferRow(row)
+      # record lines to be removed
+      if !line && @style.removeEmptyLine
+        rowsToRemove.push(row)
+        continue
+
+      lineIdx += 1
+
       indent = @editor.indentationForBufferRow(row)
       data =
-        i: i + 1,
+        i: lineIdx,
         ul: config.get("templateVariables.ulBullet#{indent}") || config.get("templateVariables.ulBullet")
 
       # we need to move cursor to each row start to perform action on line
       selection.cursor.setBufferPosition([row, 0])
 
-      line = @editor.lineTextForBufferRow(row)
       if line && isRemoveStyle
         @removeStyle(selection, line, data)
       else if line
         @addStyle(selection, line, data)
       else if !isRemoveStyle
         @insertEmptyStyle(selection, data)
 
-    selection.setBufferRange(range) # reselect the previously selected range
+    # remove deleted line
+    for row, i in rowsToRemove
+      @editor.getBuffer().deleteRow(row - i)
+
+    # reselect from start of char in range
+    range.start.column = 0
+    # to end of last char
+    range.end.row -= rowsToRemove.length
+    range.end.column = @editor.lineTextForBufferRow(range.end.row).length
+
+    selection.setBufferRange(range) # reselect the spreviously selected range
 
   insertEmptyStyle: (selection, data) ->
     selection.insertText(utils.template(@style.before, data))

lib/config.cson

@@ -183,21 +183,25 @@ lineStyles:
     before: "{ul} "
     regexMatchBefore: "(?:-|\\*|\\+|\\.)\\s"
     regexBefore: "(?:-|\\*|\\+|\\.|\\d+[\\.\\)]|[a-zA-Z]+[\\.\\)])\\s"
+    removeEmptyLine: true
   ol:
     before: "{i}. "
     regexMatchBefore: "(?:\\d+[\\.\\)]|[a-zA-Z]+[\\.\\)])\\s"
     regexBefore: "(?:-|\\*|\\+|\\.|\\d+[\\.\\)]|[a-zA-Z]+[\\.\\)])\\s"
+    removeEmptyLine: true
   task:
     before: "{captureBefore} [ ] "
     regexMatchBefore: "(?:-|\\*|\\+|\\d+[\\.\\)])\\s+\\[ ]\\s"
     regexBefore: "(-|\\*|\\+|\\d+[\\.\\)]|[a-zA-Z]+[\\.\\)])\\s*(?:\\[[xX ]])?\\s"
     captureBefore: "ul"
+    removeEmptyLine: true
   taskdone:
     before: "{captureBefore} [x] "
     regexMatchBefore: "(?:-|\\*|\\+|\\d+[\\.\\)])\\s+\\[[xX]]\\s"
     regexBefore: "(-|\\*|\\+|\\d+[\\.\\)]|[a-zA-Z]+[\\.\\)])\\s*(?:\\[[xX ]])?\\s"
     captureBefore: "ul"
     emptyBefore: "{captureBefore} [ ] "
+    removeEmptyLine: true
   blockquote: before: "> "
 
 # Image tag template, available variables:

spec/commands/style-line-spec.coffee

@@ -97,6 +97,40 @@ describe "StyleLine", ->
       - list 3
       """
 
+    it "apply ordered list on multiple rows (removeEmptyLine)", ->
+      editor.setText """
+      list 1
+
+      list 2
+
+      list 3
+      """
+      editor.setSelectedBufferRange([[0, 0], [4, 3]])
+
+      new StyleLine("ol").trigger()
+      expect(editor.getText()).toBe """
+      1. list 1
+      2. list 2
+      3. list 3
+      """
+
+    it "apply unordered list on multiple rows (removeEmptyLine)", ->
+      editor.setText """
+      list 1
+
+      list 2
+
+      list 3
+      """
+      editor.setSelectedBufferRange([[0, 0], [4, 3]])
+
+      new StyleLine("ul").trigger()
+      expect(editor.getText()).toBe """
+      - list 1
+      - list 2
+      - list 3
+      """
+
     it "apply task list", ->
       editor.setText("task")