incomplete: deleting barrier between blocks

diff --git a/editor.coffee b/editor.coffee
index dd39c62..2ad0acc 100644 (file)
--- a/editor.coffee
+++ b/editor.coffee
@@ -1042,6 +1042,7 @@ class PeachHTML5Editor
                                else
                                        @kill_cursor()
                        else
+                               # cursor at the begining of an element that contains only a space
                                parent = @cursor.n.parent
                                new_cursor = find_prev_cursor_position @tree, @cursor
                                if new_cursor?
@@ -1069,11 +1070,41 @@ class PeachHTML5Editor
                                else
                                        @kill_cursor
                                return
-               else if @cursor.i is 0
-                       console.log 'unimplemented: backspace at start of non-empty tag'
-                       # TODO if block, merge parent into prev
-                       # TODO if inline, delete char from prev text node
-                       return false
+               else if @cursor.i is 0 # start of non-empty tag
+                       # TODO factor out function for moving children around
+                       # find containing block
+                       containing_block = @cursor.n
+                       loop
+                               containing_block = containing_block.parent
+                               return unless containing_block?
+                               return if containing_block is @tree_parent
+                               break if is_display_block containing_block
+                               # FIXME only continue if first child, else inline merge here
+                       # find contaning_block's previous sibling
+                       prev = null
+                       for n, contaning_block_i in contaning_block.parent.children
+                               break if n is containing_block
+                               prev = n
+                       containing_block.el.parent.removeChild containing_block.el
+                       containing_block.parent.children.splice contaning_block_i, 1
+                       if prev is null
+                               console.log "inimplemented: backspace at start of nested blocks" # FIXME
+                               return
+                       if is_display_block prev
+                               # insert contents of containing_block into prev
+                               ws_cleanup = false
+                               if prev.children.length > 0
+                                       prev_last = prev.children[prev.children.length - 1]
+                                       if prev_last.type is 'text' and containing_block.children[0].type is 'text'
+                                               prev_last.text = prev_last.el.textContent = prev_last.text + containing_block.children[0].text
+                                               ws_cleanup = true
+                                               containing_block.children.shift()
+                               for n in containing_block.children
+                                       # TODO insert into prev
+                               # TODO adjust whitespace property of prev_last if ws_cleanup
+                       else
+                               # TODO insert contents of containing_block into prev.parent after prev
+                       return
                else
                        # TODO handle case of removing last char
                        # CONTINUE