From: Jason Woofenden <jason@jasonwoof.com>
Date: Sat, 2 Apr 2016 18:07:44 +0000 (-0400)
Subject: incomplete: deleting barrier between blocks
X-Git-Url: https://jasonwoof.com/gitweb/?p=peach-html5-editor.git;a=commitdiff_plain;h=9b0a8adcd553683463cc338e6ad4d95523e7939f

incomplete: deleting barrier between blocks
---

diff --git a/editor.coffee b/editor.coffee
index dd39c62..2ad0acc 100644
--- 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