JasonWoof Got questions, comments, patches, etc.? Contact Jason Woofenden
check for visibility:hidden/collapsed too
[peach-html5-editor.git] / editor.coffee
index 6a9d361..66d1dfe 100644 (file)
 # 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
@@ -236,9 +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
@@ -253,14 +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
@@ -281,18 +303,21 @@ 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
@@ -310,7 +335,7 @@ traverse_tree = (tree, cb) ->
        return done
 
 find_next_cursor_position = (tree, n, i) ->
-       if 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"
@@ -323,7 +348,7 @@ find_next_cursor_position = (tree, n, i) ->
        state_before = true
        found = null
        traverse_tree tree, (node, state) ->
-               if node.type is TYPE_TEXT and state_before is false
+               if node.type is 'text' and state_before is false
                        if cursor_to_xyh(node, 0)?
                                found = node
                                return true
@@ -335,7 +360,7 @@ find_next_cursor_position = (tree, n, i) ->
        return null
 
 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"
@@ -349,7 +374,7 @@ find_prev_cursor_position = (tree, n, i) ->
        found_prev = n?
        found = null
        traverse_tree tree, (node) ->
-               if node.type is TYPE_TEXT
+               if node.type is 'text'
                        if node is n
                                if found_prev?
                                        found = found_prev
@@ -364,7 +389,7 @@ find_prev_cursor_position = (tree, n, i) ->
 
 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
@@ -373,7 +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
@@ -429,14 +454,14 @@ is_space = (chr) ->
 tree_remove_empty_text_nodes = (tree) ->
        empties = []
        traverse_tree tree, (n) ->
-               if n.type is TYPE_TEXT
+               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 TYPE_TEXT
+                       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
@@ -458,13 +483,13 @@ tree_dedup_space = (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
@@ -577,6 +602,7 @@ class PeachHTML5Editor
                @cursor = null
                @cursor_el = null
                @cursor_visible = false
+               @poll_for_blur_timeout = null
                @iframe_offset = null
                opt_fragment = @options.fragment ? true
                @parser_opts = {}
@@ -621,14 +647,19 @@ class PeachHTML5Editor
        init: -> # called by @iframe's onload (or timeout on firefox)
                @idoc = @iframe.contentDocument
                @overlay.onclick = (e) =>
+                       @have_focus()
                        return event_return e, @onclick e
                @overlay.ondoubleclick = (e) =>
+                       @have_focus()
                        return event_return e, @ondoubleclick e
                @outer_idoc.body.onkeyup = (e) =>
+                       @have_focus()
                        return event_return e, @onkeyup e
                @outer_idoc.body.onkeydown = (e) =>
+                       @have_focus()
                        return event_return e, @onkeydown e
                @outer_idoc.body.onkeypress = (e) =>
+                       @have_focus()
                        return event_return e, @onkeypress e
                if @options.stylesheet
                        # TODO test this
@@ -649,6 +680,8 @@ class PeachHTML5Editor
                new_cursor = find_loc_cursor_position @tree, xy
                if new_cursor?
                        @move_cursor new_cursor
+               else
+                       @kill_cursor()
                return false
        ondoubleclick: (e) ->
                return false
@@ -724,7 +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
@@ -778,7 +811,12 @@ class PeachHTML5Editor
                @overlay.appendChild @cursor_el
                @cursor_visible = true
                @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
@@ -788,7 +826,7 @@ class PeachHTML5Editor
                prev_bounds = x: 0, y: 0, w: 0, h: 0
                alpha = 0.1
                while n?.el?
-                       if n.type is TYPE_TEXT
+                       if n.type is 'text'
                                n = n.parent
                                continue
                        bounds = get_el_bounds n.el
@@ -796,10 +834,10 @@ class PeachHTML5Editor
                        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: style: "position: absolute; left: #{bounds.x - 1 + overlay_padding}px; top: #{bounds.y - 1 + overlay_padding}px; width: #{bounds.w}px; height: #{bounds.h}px; outline: 1000px solid rgba(0,153,255,#{alpha}); border: 1px solid rgba(0,0,0,.1)"
+                       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: style: "position: absolute; left: #{bounds.x - 2 + overlay_padding}px; top: #{bounds.y - 6 + overlay_padding}px; font-size: 8px", children: [domify @outer_idoc, text: "<#{n.name}>"]
+                       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
@@ -814,7 +852,7 @@ class PeachHTML5Editor
                        inner_flags = want_nl: true
                        is_br = false
                        switch n.type
-                               when TYPE_TAG
+                               when 'tag'
                                        if n.name is 'br'
                                                is_br = true
                                        is_text = false
@@ -824,12 +862,14 @@ class PeachHTML5Editor
                                                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
@@ -845,7 +885,11 @@ class PeachHTML5Editor
                                                                        if 'display' is 'none'
                                                                                in_flow = false
                                                                        else
-                                                                               in_flow = true
+                                                                               switch visibility
+                                                                                       when 'hidden', 'collapse'
+                                                                                               in_flow = false
+                                                                                       else # visible
+                                                                                               in_flow = true
                                        switch display
                                                when 'inline', 'none'
                                                        inner_flags.block = false
@@ -857,12 +901,12 @@ class PeachHTML5Editor
                                                        inner_flags.block = true
                                                        is_block = true
                                                        in_flow_block = in_flow
-                               when TYPE_TEXT
+                               when 'text'
                                        is_text = true
                                        is_block = false
                                        in_flow = true
                                        in_flow_block = false
-                               else # TYPE_COMMENT, TYPE_DOCTYPE
+                               else # 'comment', 'doctype'
                                        is_text = false
                                        is_block = false
                                        in_flow = false
@@ -875,7 +919,7 @@ class PeachHTML5Editor
                                                        ret += "\n"
                                                ret += indent
                        switch n.type
-                               when TYPE_TAG
+                               when 'tag'
                                        ret += '<' + n.name
                                        attr_keys = []
                                        for k of n.attrs
@@ -894,11 +938,11 @@ class PeachHTML5Editor
                                                if n.children.length
                                                        ret += @pretty_html n.children, next_indent, inner_flags
                                                ret += "</#{n.name}>"
-                               when TYPE_TEXT
+                               when 'text'
                                        ret += enc_text n.text
-                               when TYPE_COMMENT
+                               when 'comment'
                                        ret += "<!--#{n.text}-->" # TODO encode?
-                               when TYPE_DOCTYPE
+                               when 'doctype'
                                        ret += "<!DOCTYPE #{n.name}"
                                        if n.public_identifier? and n.public_identifier.length > 0
                                                ret += " \"#{n.public_identifier}\""
@@ -915,6 +959,21 @@ class PeachHTML5Editor
                                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...