X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=editor.coffee;h=66d1dfedcaa62042c2d17a2982b3fab7fcf6a567;hb=fb81209e78ff39a5469ee9217b35d4edf94a21d5;hp=45e5f364ddd629b391711d540491769f4a5cbc25;hpb=01d1661cb1c3d11720ddbf1337b0b51d83152fdc;p=peach-html5-editor.git

diff --git a/editor.coffee b/editor.coffee
index 45e5f36..66d1dfe 100644
--- a/editor.coffee
+++ b/editor.coffee
@@ -17,10 +17,17 @@
 # SETTINGS
 overlay_padding = 10
 
-TYPE_TAG = peach_parser.TYPE_TAG
-TYPE_TEXT = peach_parser.TYPE_TEXT
-TYPE_COMMENT = peach_parser.TYPE_COMMENT
-TYPE_DOCTYPE = peach_parser.TYPE_DOCTYPE
+timeout = (ms, cb) -> return setTimeout cb, ms
+next_frame = (cb) ->
+	if (window.requestAnimationFrame?)
+		window.requestAnimationFrame cb
+	else
+		timeout 16, cb
+
+# xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
+valid_attr_regex = new RegExp '^[a-zA-Z_:][-a-zA-Z0-9_:.]*$'
+# html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
+js_attr_regex = new RegExp '^[oO][nN].'
 
 debug_dot_at = (doc, x, y) ->
 	return # disabled
@@ -139,37 +146,16 @@ void_elements = {
 	track: true
 	wbr: true
 }
-dom_to_html = (dom) ->
-	ret = ''
-	for el in dom
-		switch el.type
-			when TYPE_TAG
-				ret += '<' + el.name
-				attr_keys = []
-				for k of el.attrs
-					attr_keys.unshift k
-				#attr_keys.sort()
-				for k in attr_keys
-					ret += " #{k}"
-					if el.attrs[k].length > 0
-						ret += "=\"#{enc_attr el.attrs[k]}\""
-				ret += '>'
-				unless void_elements[el.name]
-					if el.children.length
-						ret += dom_to_html el.children
-					ret += "</#{el.name}>"
-			when TYPE_TEXT
-				ret += enc_text el.text
-			when TYPE_COMMENT
-				ret += "<!--#{el.text}-->"
-			when TYPE_DOCTYPE
-				ret += "<!DOCTYPE #{el.name}"
-				if el.public_identifier? and el.public_identifier.length > 0
-					ret += " \"#{el.public_identifier}\""
-				if el.system_identifier? and el.system_identifier.length > 0
-					ret += " \"#{el.system_identifier}\""
-				ret += ">\n"
-	return ret
+# TODO make these always pretty-print (on the inside) like blocks
+no_text_elements = { # these elements never contain text
+	select: true
+	table: true
+	tr: true
+	thead: true
+	tbody: true
+	ul: true
+	ol: true
+}
 
 domify = (doc, hash) ->
 	for tag, attrs of hash
@@ -255,9 +241,34 @@ outer_css = (args) ->
 	ret += '@keyframes blink {'
 	ret +=     'to { visibility: hidden; }'
 	ret += '}'
+	ret += '.ann_box {'
+	ret +=     'z-index: 5;'
+	ret +=     'position: absolute;'
+	ret +=     'border: 1px solid rgba(0,0,0,0.1);'
+	ret +=     'outline: 1px solid rgba(255,255,255,0.1);' # in case there's a black background
+	ret += '}'
+	ret += '.ann_tag {'
+	ret +=     'z-index: 10;'
+	ret +=     'position: absolute;'
+	ret +=     'font-size: 8px;'
+	ret +=     'white-space: pre;'
+	ret +=     'background: rgba(255,255,255,0.4);'
+	ret +=     '-ms-user-select: none;'
+	ret +=     '-webkit-user-select: none;'
+	ret +=     '-moz-user-select: none;'
+	ret +=     'user-select: none;'
+	ret += '}'
 	return ret
 
-# key codes:
+
+ignore_key_codes =
+	'18': true # alt
+	'20': true # capslock
+	'17': true # ctrl
+	'144': true # numlock
+	'16': true # shift
+	'91': true # windows "start" key
+# key codes: (valid on keydown, not keypress)
 KEY_LEFT = 37
 KEY_UP = 38
 KEY_RIGHT = 39
@@ -272,14 +283,6 @@ KEY_INSERT = 45
 KEY_PAGE_UP = 33
 KEY_PAGE_DOWN = 34
 KEY_TAB = 9
-
-ignore_key_codes =
-	'18': true # alt
-	'20': true # capslock
-	'17': true # ctrl
-	'144': true # numlock
-	'16': true # shift
-	'91': true # windows "start" key
 control_key_codes = # we react to these, but they aren't typing
 	'37': KEY_LEFT
 	'38': KEY_UP
@@ -300,36 +303,39 @@ instantiate_tree = (tree, parent) ->
 	remove = []
 	for c, i in tree
 		switch c.type
-			when TYPE_TEXT
+			when 'text'
 				c.el = parent.ownerDocument.createTextNode c.text
 				parent.appendChild c.el
-			when TYPE_TAG
+			when 'tag'
 				if c.name in ['script', 'object', 'iframe', 'link']
 					# TODO put placeholders instead
 					remove.unshift i
+					continue
 				# TODO create in correct namespace
 				c.el = parent.ownerDocument.createElement c.name
 				for k, v of c.attrs
 					# FIXME if attr_whitelist[k]?
-					c.el.setAttribute k, v
+					if valid_attr_regex.test k
+						unless js_attr_regex.test k
+							c.el.setAttribute k, v
 				parent.appendChild c.el
 				if c.children.length
 					instantiate_tree c.children, c.el
 	for i in remove
 		tree.splice i, 1
 
-traverse_tree = (tree, state, cb) ->
+traverse_tree = (tree, cb) ->
+	done = false
 	for c in tree
-		cb c, state
-		break if state.done?
+		done = cb c
+		return done if done
 		if c.children.length
-			traverse_tree c.children, state, cb
-			break if state.done?
-	return state
-# find the next element in tree (and decendants) that is after n and can contain text
-# TODO make it so cursor can go places that don't have text but could
+			done = traverse_tree c.children, cb
+			return done if done
+	return done
+
 find_next_cursor_position = (tree, n, i) ->
-	if n? and n.type is TYPE_TEXT and n.text.length > i
+	if n.type is 'text' and n.text.length > i
 		orig_xyh = cursor_to_xyh n, i
 		unless orig_xyh?
 			console.log "ERROR: couldn't find xy for current cursor location"
@@ -339,19 +345,22 @@ find_next_cursor_position = (tree, n, i) ->
 			if next_xyh?
 				if next_xyh.x > orig_xyh.x or next_xyh.y > orig_xyh.y
 					return [n, next_i]
-	found = traverse_tree tree, before: n?, (node, state) ->
-		if node.type is TYPE_TEXT and state.before is false
-			state.node = node
-			state.done = true
+	state_before = true
+	found = null
+	traverse_tree tree, (node, state) ->
+		if node.type is 'text' and state_before is false
+			if cursor_to_xyh(node, 0)?
+				found = node
+				return true
 		if node is n
-			state.before = false
-	if found.node?
-		return [found.node, 0]
+			state_before = false
+		return false
+	if found?
+		return [found, 0]
 	return null
 
-# TODO make it so cursor can go places that don't have text but could
 find_prev_cursor_position = (tree, n, i) ->
-	if n? and n.type is TYPE_TEXT and i > 0
+	if n? and n.type is 'text' and i > 0
 		orig_xyh = cursor_to_xyh n, i
 		unless orig_xyh?
 			console.log "ERROR: couldn't find xy for current cursor location"
@@ -362,24 +371,25 @@ find_prev_cursor_position = (tree, n, i) ->
 				if prev_xyh.x < orig_xyh.x or prev_xyh.y < orig_xyh.y
 					return [n, prev_i]
 		return [n, i - 1]
-	found = traverse_tree tree, before: n?, (node, state) ->
-		if node.type is TYPE_TEXT
-			unless n?
-				state.node = node
-				state.done = true
+	found_prev = n?
+	found = null
+	traverse_tree tree, (node) ->
+		if node.type is 'text'
 			if node is n
-				if state.prev?
-					state.node = state.prev
-				state.done = true
-			if node
-				state.prev = node
-	if found.node?
-		return [found.node, found.node.text.length]
+				if found_prev?
+					found = found_prev
+				return true
+			found_prev = node
+		return false
+	if found?
+		if cursor_to_xyh found, found.text.length # text visible?
+			return [found, found.text.length]
+		return find_prev_cursor_position tree, found, 0
 	return null
 
 find_loc_cursor_position = (tree, loc) ->
 	for c in tree
-		if c.type is TYPE_TAG or c.type is TYPE_TEXT
+		if c.type is 'tag' or c.type is 'text'
 			bounds = get_el_bounds c.el
 			continue if loc.x < bounds.x
 			continue if loc.x > bounds.x + bounds.w
@@ -388,7 +398,7 @@ find_loc_cursor_position = (tree, loc) ->
 			if c.children.length
 				ret = find_loc_cursor_position c.children, loc
 				return ret if ret?
-			if c.type is TYPE_TEXT
+			if c.type is 'text'
 				# click is within bounding box that contains all text.
 				return [c, 0] if c.text.length is 0
 				before_i = 0
@@ -441,6 +451,25 @@ is_space_code = (char_code) ->
 is_space = (chr) ->
 	return is_space_code chr.charCodeAt 0
 
+tree_remove_empty_text_nodes = (tree) ->
+	empties = []
+	traverse_tree tree, (n) ->
+		if n.type is 'text'
+			if n.text.length is 0
+				empties.unshift n
+		return false
+	for n in empties
+		# don't completely empty the tree
+		if tree.length is 1
+			if tree[0].type is 'text'
+				console.log "oop, leaving a blank node because it's the only thing"
+				return
+		n.el.parentNode.removeChild n.el
+		for c, i in n.parent.children
+			if c is n
+				n.parent.children.splice i, 1
+				break
+
 # pass a array of nodes (from parser library, ie it should have .el and .text)
 tree_dedup_space = (tree) ->
 	prev = cur = next = null
@@ -450,15 +479,17 @@ tree_dedup_space = (tree) ->
 	first = true
 	removed_char = null
 
+	tree_remove_empty_text_nodes(tree)
+
 	iterate = (tree, cb) ->
 		for n in tree
-			if n.type is TYPE_TEXT
+			if n.type is 'text'
 				i = 0
 				while i < n.text.length # don't foreach, cb might remove chars
 					advance = cb n, i
 					if advance
 						i += 1
-			if n.type is TYPE_TAG
+			if n.type is 'tag'
 				block = is_display_block n.el
 				if block
 					cb null
@@ -523,14 +554,6 @@ tree_dedup_space = (tree) ->
 					return put_it_back()
 			#else
 			#	console.log "removing space becase space after it is collapsed"
-		# if there's no prev or next (single space inside a block-level element?) check
-		# TODO scrapt this, or fix it so it works when there's no parent
-		# if prev is null and next is null
-		#	new_parent_px = cur.parent.el.getBoundingClientRect()
-		#	if new_parent_px.left isnt parent_px.left or new_parent_px.top isnt parent_px.top or new_parent_px.right isnt parent_px.right or new_parent_px.bottom isnt parent_px.bottom
-		#		console.log "WEIRD: parent moved"
-		#		return put_it_back()
-		# we didn't put it back
 		return true
 	# pass null at start/end of display:block
 	queue = (n, i) ->
@@ -559,6 +582,8 @@ tree_dedup_space = (tree) ->
 	iterate tree, queue
 	queue null
 
+	tree_remove_empty_text_nodes(tree)
+
 class PeachHTML5Editor
 	# Options: (all optional)
 	#   editor_id: "id" attribute for outer-most element created by/for editor
@@ -567,14 +592,18 @@ class PeachHTML5Editor
 		@options = options ? {}
 		@in_el = in_el
 		@tree = []
+		@matting = []
 		@inited = false # when iframes have loaded
 		@outer_iframe # iframe to hold editor
 		@outer_idoc # "document" object for @outer_iframe
+		@wrap2 = null # scrollbar is on this
 		@iframe = null # iframe to hold editable content
 		@idoc = null # "document" object for @iframe
 		@cursor = null
 		@cursor_el = null
 		@cursor_visible = false
+		@poll_for_blur_timeout = null
+		@iframe_offset = null
 		opt_fragment = @options.fragment ? true
 		@parser_opts = {}
 		if opt_fragment
@@ -596,7 +625,7 @@ class PeachHTML5Editor
 			setTimeout (=> @init() unless @inited), 200 # firefox never fires this onload
 			@outer_idoc.body.appendChild(
 				domify @outer_idoc, div: id: 'wrap1', children: [
-					domify @outer_idoc, div: id: 'wrap2', children: [
+					@wrap2 = domify @outer_idoc, div: id: 'wrap2', children: [
 						domify @outer_idoc, div: id: 'wrap3', children: [
 							@iframe
 							@overlay = domify @outer_idoc, div: id: 'overlay'
@@ -618,15 +647,20 @@ class PeachHTML5Editor
 	init: -> # called by @iframe's onload (or timeout on firefox)
 		@idoc = @iframe.contentDocument
 		@overlay.onclick = (e) =>
-			return event_return @onclick e
+			@have_focus()
+			return event_return e, @onclick e
 		@overlay.ondoubleclick = (e) =>
-			return event_return @ondoubleclick e
+			@have_focus()
+			return event_return e, @ondoubleclick e
 		@outer_idoc.body.onkeyup = (e) =>
-			return event_return @onkeyup e
+			@have_focus()
+			return event_return e, @onkeyup e
 		@outer_idoc.body.onkeydown = (e) =>
-			return event_return @onkeydown e
+			@have_focus()
+			return event_return e, @onkeydown e
 		@outer_idoc.body.onkeypress = (e) =>
-			return event_return @onkeypress e
+			@have_focus()
+			return event_return e, @onkeypress e
 		if @options.stylesheet
 			# TODO test this
 			@idoc.head.appendChild domify @idoc, style: src: @options.stylesheet
@@ -634,12 +668,20 @@ class PeachHTML5Editor
 		@inited = true
 		if @options.on_init?
 			@options.on_init()
+	overlay_event_to_inner_xy: (e) ->
+		unless @iframe_offset?
+			@iframe_offset = get_el_bounds @iframe
+		x = e.pageX # TODO ?cross-browserify
+		y = e.pageY + @wrap2.scrollTop # TODO ?cross-browserify
+		# TODO adjust for scrolling
+		return x: x - @iframe_offset.x, y: y - @iframe_offset.y
 	onclick: (e) ->
-		x = (e.offsetX ? e.layerX) - overlay_padding
-		y = (e.offsetY ? e.layerY) - overlay_padding
-		new_cursor = find_loc_cursor_position @tree, x: x, y: y
+		xy = @overlay_event_to_inner_xy e
+		new_cursor = find_loc_cursor_position @tree, xy
 		if new_cursor?
 			@move_cursor new_cursor
+		else
+			@kill_cursor()
 		return false
 	ondoubleclick: (e) ->
 		return false
@@ -688,6 +730,7 @@ class PeachHTML5Editor
 				@cursor[0].text = @cursor[0].text.substr(0, @cursor[1] - 1) + @cursor[0].text.substr(@cursor[1])
 				@cursor[0].el.nodeValue = @cursor[0].text
 				@move_cursor [@cursor[0], @cursor[1] - 1]
+				@changed()
 				return false
 			when KEY_DELETE
 				return false unless @cursor?
@@ -695,6 +738,7 @@ class PeachHTML5Editor
 				@cursor[0].text = @cursor[0].text.substr(0, @cursor[1]) + @cursor[0].text.substr(@cursor[1] + 1)
 				@cursor[0].el.nodeValue = @cursor[0].text
 				@move_cursor [@cursor[0], @cursor[1]]
+				@changed()
 				return false
 			when KEY_ENTER
 				return false
@@ -713,7 +757,7 @@ class PeachHTML5Editor
 	onkeypress: (e) ->
 		return if e.ctrlKey
 		return false if ignore_key_codes[e.keyCode]?
-		return false if control_key_codes[e.keyCode]? # handled in keydown
+		# return false if control_key_codes[e.keyCode]? # handled in keydown
 		char = e.charCode ? e.keyCode
 		if char and @cursor?
 			char = String.fromCharCode char
@@ -742,9 +786,8 @@ class PeachHTML5Editor
 		tree_dedup_space @tree
 		@changed()
 	changed: ->
-		# FIXME don't export cursor placeholder (when cursor is between space characters)
 		@in_el.onchange = null
-		@in_el.value = dom_to_html @tree
+		@in_el.value = @pretty_html @tree
 		@in_el.onchange = =>
 			@load_html @in_el.value
 		@iframe.style.height = "0"
@@ -754,21 +797,183 @@ class PeachHTML5Editor
 			@cursor_el.parentNode.removeChild @cursor_el
 			@cursor_visible = false
 		@cursor = null
+		@matt null
 	move_cursor: (cursor) ->
 		loc = cursor_to_xyh cursor[0], cursor[1]
 		unless loc?
 			console.log "error: tried to move cursor to position that has no pixel location", cursor[0], cursor[1]
 			return
 		@cursor = cursor
-		# replace cursor, to reset blink animation
+		# replace cursor element, to reset blink animation
 		if @cursor_visible
 			@cursor_el.parentNode.removeChild @cursor_el
 		@cursor_el = domify @outer_idoc, div: id: 'cursor'
 		@overlay.appendChild @cursor_el
 		@cursor_visible = true
-		# TODO figure out x,y coords for cursor
 		@cursor_el.style.left = "#{loc.x + overlay_padding - 1}px"
-		@cursor_el.style.top = "#{loc.y + overlay_padding}px"
+		if loc.h < 5
+			height = 12
+		else
+			height = loc.h
+		@cursor_el.style.top = "#{loc.y + overlay_padding + Math.round(height * .07)}px"
+		@cursor_el.style.height = "#{Math.round height * 0.82}px"
+		@matt cursor[0]
+	matt: (n) ->
+		while @matting.length > 0
+			@overlay.removeChild @matting[0]
+			@matting.shift()
+		return unless n?
+		prev_bounds = x: 0, y: 0, w: 0, h: 0
+		alpha = 0.1
+		while n?.el?
+			if n.type is 'text'
+				n = n.parent
+				continue
+			bounds = get_el_bounds n.el
+			return unless bounds?
+			if bounds.x is prev_bounds.x and bounds.y is prev_bounds.y and bounds.w is prev_bounds.w and bounds.h is prev_bounds.h
+				n = n.parent
+				continue
+			matt = domify @outer_idoc, div: class: 'ann_box', style: "left: #{bounds.x - 1 + overlay_padding}px; top: #{bounds.y - 2 + overlay_padding}px; width: #{bounds.w}px; height: #{bounds.h}px" # outline: 1000px solid rgba(0,153,255,#{alpha});
+			@overlay.appendChild matt
+			@matting.push matt
+			ann = domify @outer_idoc, div: class: 'ann_tag', style: "left: #{bounds.x + 1 + overlay_padding}px; top: #{bounds.y - 7 + overlay_padding}px", children: [domify @outer_idoc, text: " #{n.name} "]
+			@overlay.appendChild ann
+			@matting.push ann
+			n = n.parent
+			alpha *= 1.5
+	pretty_html: (tree, indent = '', parent_flags = pre_ish: false, block: true, want_nl: false) ->
+		ret = ''
+		want_nl = parent_flags.want_nl
+		prev_in_flow_is_text = false
+		prev_in_flow_is_block = false
+		for n, i in tree
+			# figure out flags
+			inner_flags = want_nl: true
+			is_br = false
+			switch n.type
+				when 'tag'
+					if n.name is 'br'
+						is_br = true
+					is_text = false
+					if n.el.currentStyle?
+						cs = n.el.currentStyle
+						whitespace = cs['white-space']
+						display = cs['display']
+						position = cs['position']
+						float = cs['float']
+						visibility = cs['visibility']
+					else
+						cs = @iframe.contentWindow.getComputedStyle(n.el, null)
+						whitespace = cs.getPropertyValue 'white-space'
+						display = cs.getPropertyValue 'display'
+						position = cs.getPropertyValue 'position'
+						float = cs.getPropertyValue 'float'
+						visibility = cs.getPropertyValue 'visibility'
+					if n.name is 'textarea'
+						inner_flags.pre_ish = true
+					else
+						inner_flags.pre_ish = whitespace.substr(0, 3) is 'pre'
+					switch float
+						when 'left', 'right'
+							in_flow = false
+						else
+							switch position
+								when 'absolute', 'fixed'
+									in_flow = false
+								else
+									if 'display' is 'none'
+										in_flow = false
+									else
+										switch visibility
+											when 'hidden', 'collapse'
+												in_flow = false
+											else # visible
+												in_flow = true
+					switch display
+						when 'inline', 'none'
+							inner_flags.block = false
+							is_block = in_flow_block = false
+						when 'inline-black'
+							inner_flags.block = true
+							is_block = in_flow_block = false
+						else # block, table, etc
+							inner_flags.block = true
+							is_block = true
+							in_flow_block = in_flow
+				when 'text'
+					is_text = true
+					is_block = false
+					in_flow = true
+					in_flow_block = false
+				else # 'comment', 'doctype'
+					is_text = false
+					is_block = false
+					in_flow = false
+					in_flow_block = false
+			# print whitespace if we can
+			unless parent_flags.pre_ish
+				unless prev_in_flow_is_text and is_br
+					if (i is 0 and parent_flags.block) or in_flow_block or prev_in_flow_is_block
+						if want_nl
+							ret += "\n"
+						ret += indent
+			switch n.type
+				when 'tag'
+					ret += '<' + n.name
+					attr_keys = []
+					for k of n.attrs
+						attr_keys.unshift k
+					#attr_keys.sort()
+					for k in attr_keys
+						ret += " #{k}"
+						if n.attrs[k].length > 0
+							ret += "=\"#{enc_attr n.attrs[k]}\""
+					ret += '>'
+					unless void_elements[n.name]?
+						if inner_flags.block
+							next_indent = indent + '    '
+						else
+							next_indent = indent
+						if n.children.length
+							ret += @pretty_html n.children, next_indent, inner_flags
+						ret += "</#{n.name}>"
+				when 'text'
+					ret += enc_text n.text
+				when 'comment'
+					ret += "<!--#{n.text}-->" # TODO encode?
+				when 'doctype'
+					ret += "<!DOCTYPE #{n.name}"
+					if n.public_identifier? and n.public_identifier.length > 0
+						ret += " \"#{n.public_identifier}\""
+					if n.system_identifier? and n.system_identifier.length > 0
+						ret += " \"#{n.system_identifier}\""
+					ret += ">"
+			want_nl = true
+			if in_flow
+				prev_in_flow_is_text = is_text
+				prev_in_flow_is_block = is_block or (in_flow and is_br)
+		if tree.length
+			# output final newline if allowed
+			unless parent_flags.pre_ish
+				if prev_in_flow_is_block or parent_flags.block
+					ret += "\n#{indent.substr 4}"
+		return ret
+	onblur: ->
+		@kill_cursor()
+	have_focus: ->
+		@editor_is_focused = true
+		@poll_for_blur()
+	poll_for_blur: ->
+		return if @poll_for_blur_timeout? # already polling
+		@poll_for_blur_timeout = timeout 150, =>
+			next_frame => # pause polling when browser knows we're not active/visible/etc.
+				@poll_for_blur_timeout = null
+				if document.activeElement is @outer_iframe
+					@poll_for_blur()
+				else
+					@editor_is_focused = false
+					@onblur()
 
 window.peach_html5_editor = (args...) ->
 	return new PeachHTML5Editor args...