func lookupWidget(p string, w data.Widget) data.Widget {
if p == w.TypeName() {
return w
}
switch w := w.(type) {
case *data.Text, *data.EditText, *data.Button:
return w
case *data.Column:
s := strings.SplitN(p, "/", 2)
if len(s) != 2 {
panic("Weird bug: not a nice name")
}
i, err := strconv.Atoi(s[0])
if err != nil || i >= len(*w) {
panic("Weird bug: not a good row")
}
return lookupWidget(s[1], (*w)[i])
case *data.Table:
s := strings.SplitN(p, "/", 3)
if len(s) != 3 {
panic("Weird bug: not a nice name")
}
i, err := strconv.Atoi(s[0])
if err != nil || i >= len(*w) {
panic("Weird bug: not a good row")
}
r := (*w)[i]
j, err := strconv.Atoi(s[1])
if err != nil || j >= len(r) {
panic(fmt.Sprint("Weird bug: not a good column: ", s[1]))
}
return lookupWidget(s[2], r[j])
default:
panic(fmt.Sprintf("Unknown lookupWidget type %#v\n", w))
}
return nil
}
func WidgetToHtml(parent string, widget data.Widget) (out string) {
mypath := path.Join(parent, widget.TypeName())
switch widget := widget.(type) {
case *data.Text:
return html.EscapeString(widget.String)
case *data.EditText:
myname := widget.String
return `<input type="text" onchange="say('` + mypath +
`', 'onchange:'+this.value)" value="` + html.EscapeString(myname) + `" />`
case *data.TextArea:
myname := widget.String
return `<textarea cols="80" rows="5" onchange="say('` + mypath +
`', 'onchange:'+this.value)">` + html.EscapeString(myname) + `</textarea>`
case *data.Table:
out = "<table>\n"
for i, r := range *widget {
class := "even" // I define classes for even and odd rows
switch { // so you can alternate colors if you like.
case i == 0: // I also define "even first" as a possible header
class = "even first"
case i&1 == 1:
class = "odd"
}
out += ` <tr class="` + class + `">` + "\n"
for j, w := range r {
whtml := WidgetToHtml(path.Join(parent, fmt.Sprint(i, "/", j)), w)
out += " <td>" + whtml + "</td>\n"
}
out += " </tr>\n"
}
out += "</table>\n"
case *data.Column:
out = ""
for i, w := range *widget {
class := "even" // I define classes for even and odd rows
switch { // so you can alternate colors if you like.
case i == 0: // I also define "even first" as a possible header
class = "even first"
case i&1 == 1:
class = "odd"
}
whtml := WidgetToHtml(path.Join(parent, fmt.Sprint(i)), w)
out += `<p class="` + class + `">` + whtml + "</p>\n"
}
case *data.Button:
myname := widget.String
return `<input type="submit" onclick="say('` + mypath +
`', 'onclick')" value="` + html.EscapeString(myname) + `" />`
case *data.Menu:
myname := widget.Options[widget.Value]
out = `<select onchange="say('` + mypath +
`', 'onchange:'+this.value)" value="` + html.EscapeString(myname) + `">`
for i, v := range widget.Options {
if i == widget.Value {
out += "\n<option value=\"" + v + `" selected='selected'>` + v + "</option>"
} else {
out += "\n<option value=\"" + v + `">` + v + "</option>"
}
}
out += "\n</select>"
// case *data.Window:
// return WidgetToHtml(parent, widget.Widget)
default:
panic(fmt.Sprintf("Unhandled data.Widget type in WidgetToHtml! %T", widget))
}
return
}