func (self *TextPreview) Render(context *Context, writer *utils.XMLWriter) (err error) {
if len(self.PlainText) < self.MaxLength {
writer.Content(self.PlainText)
} else {
shortLength := self.ShortLength
if shortLength == 0 {
shortLength = self.MaxLength
}
// If in the middle of a word, go back to space before it
for shortLength > 0 && !unicode.IsSpace(rune(self.PlainText[shortLength-1])) {
shortLength--
}
// If in the middle of space, go back to word before it
for shortLength > 0 && unicode.IsSpace(rune(self.PlainText[shortLength-1])) {
shortLength--
}
writer.Content(self.PlainText[:shortLength])
writer.Content("... ")
if self.MoreLink != nil {
writer.OpenTag("a")
writer.Attrib("href", self.MoreLink.URL(context.PathArgs...))
writer.AttribIfNotDefault("title", self.MoreLink.LinkTitle(context))
content := self.MoreLink.LinkContent(context)
if content != nil {
err = content.Render(context, writer)
}
writer.ForceCloseTag() // a
}
}
return err
}
func (self *DummyImage) Render(context *Context, writer *utils.XMLWriter) (err error) {
src := fmt.Sprintf("http://dummyimage.com/%dx%d", self.Width, self.Height)
if self.BackgroundColor != "" || self.ForegroundColor != "" {
if self.BackgroundColor != "" {
src += "/" + self.BackgroundColor
} else {
src += "/ccc"
}
if self.ForegroundColor != "" {
src += "/" + self.ForegroundColor
}
}
src += ".png"
if self.Text != "" {
src += "&text=" + url.QueryEscape(self.Text)
}
writer.OpenTag("img").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("src", src)
writer.AttribIfNotDefault("width", self.Width)
writer.AttribIfNotDefault("height", self.Height)
writer.AttribIfNotDefault("alt", self.Text)
writer.CloseTag()
return nil
}
func (self *Video) Render(context *Context, writer *utils.XMLWriter) (err error) {
youtubeId := ""
switch {
case strings.HasPrefix(self.URL, "http://youtu.be/"):
i := len("http://youtu.be/")
youtubeId = self.URL[i : i+11]
case strings.HasPrefix(self.URL, "http://www.youtube.com/watch?v="):
i := len("http://www.youtube.com/watch?v=")
youtubeId = self.URL[i : i+11]
}
if youtubeId != "" {
writer.OpenTag("iframe").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
width := self.Width
if width == 0 {
width = 640
}
height := self.Height
if height == 0 {
height = 390
}
writer.Attrib("src", "http://www.youtube.com/embed/", youtubeId)
writer.Attrib("width", width)
writer.Attrib("height", height)
writer.Attrib("frameborder", "0")
writer.Attrib("allowfullscreen", "allowfullscreen")
writer.CloseTag()
return nil
}
return errs.Format("Unsupported video URL: %s", self.URL)
}
func (self *TextArea) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("textarea").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
cols := self.Cols
if cols == 0 {
cols = TextAreaDefaultCols
}
rows := self.Rows
if rows == 0 {
rows = TextAreaDefaultRows
}
writer.Attrib("name", self.Name)
writer.Attrib("rows", rows)
writer.Attrib("cols", cols)
writer.AttribIfNotDefault("tabindex", self.TabIndex)
if self.Readonly {
writer.Attrib("readonly", "readonly")
}
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
writer.EscapeContent(self.Text)
writer.CloseTag()
return nil
}
func (self *TextField) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("input").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("name", self.Name)
writer.AttribIfNotDefault("tabindex", self.TabIndex)
if self.Readonly {
writer.Attrib("readonly", "readonly")
}
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
switch self.Type {
case PasswordTextField:
writer.Attrib("type", "password")
case EmailTextField:
writer.Attrib("type", "email")
default:
writer.Attrib("type", "text")
}
writer.AttribIfNotDefault("size", self.Size)
writer.AttribIfNotDefault("maxlength", self.MaxLength)
writer.Attrib("value", self.Text)
writer.CloseTag()
return nil
}
func (self *HiddenInput) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("input").Attrib("id", self.id)
writer.Attrib("type", "hidden")
writer.Attrib("name", self.Name)
writer.Attrib("value", self.Value)
writer.CloseTag()
return nil
}
func (self *Paragraph) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("p").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
if self.Content != nil {
err = self.Content.Render(context, writer)
}
writer.ForceCloseTag()
return err
}
func (self *Image) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("img").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("src", self.URL)
writer.AttribIfNotDefault("width", self.Width)
writer.AttribIfNotDefault("height", self.Height)
writer.AttribIfNotDefault("alt", self.Description)
writer.CloseTag()
return nil
}
func (self *FileInput) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("input").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("type", "file").Attrib("name", self.Name)
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
writer.CloseTag()
return err
}
func (self *ShortTag) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag(self.Tag).AttribIfNotDefault("class", self.Class)
for key, value := range self.Attribs {
writer.Attrib(key, value)
}
if self.Content != nil {
err = self.Content.Render(context, writer)
}
writer.ForceCloseTag()
return err
}
func (self *Label) Render(context *Context, writer *utils.XMLWriter) (err error) {
var forID string
if self.For != nil {
forID = self.For.ID()
}
writer.OpenTag("label").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.AttribIfNotDefault("for", forID)
if self.Content != nil {
err = self.Content.Render(context, writer)
}
writer.CloseTag()
return err
}
func (self *Table) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("table").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
if self.Caption != "" {
writer.OpenTag("caption").EscapeContent(self.Caption).CloseTag()
}
if self.Model != nil {
rows := self.Model.Rows()
columns := self.Model.Columns()
for row := 0; row < rows; row++ {
writer.OpenTag("tr")
if row&1 == 0 {
writer.Attrib("class", "row", row, " even")
} else {
writer.Attrib("class", "row", row, " odd")
}
for col := 0; col < columns; col++ {
if self.HeaderRow && row == 0 {
writer.OpenTag("th")
} else {
writer.OpenTag("td")
}
if col&1 == 0 {
writer.Attrib("class", "col", col, " even")
} else {
writer.Attrib("class", "col", col, " odd")
}
view, err := self.Model.CellView(row, col, context)
if view != nil && err == nil {
view.Init(view)
err = view.Render(context, writer)
}
if err != nil {
return err
}
writer.ForceCloseTag() // td/th
}
writer.ForceCloseTag() // tr
}
}
writer.ForceCloseTag() // table
return nil
}
func (self *Iframe) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("iframe").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("width", self.Width).Attrib("height", self.Height)
writer.Attrib("frameborder", self.Border)
writer.Attrib("marginwidth", self.MarginWidth).Attrib("marginheight", self.MarginHeight)
if self.Scrolling {
writer.Attrib("scrolling", "yes")
} else {
writer.Attrib("scrolling", "no")
}
if self.Seamless {
writer.Attrib("seamless", "seamless")
}
writer.Attrib("src", self.URL)
writer.ForceCloseTag()
return nil
}
func (self *Link) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("a").AttribIfNotDefault("id", self.id)
writer.AttribIfNotDefault("class", self.Class)
if self.NewWindow {
writer.Attrib("target", "_blank")
}
if self.Model != nil {
writer.Attrib("href", self.Model.URL(context.PathArgs...))
writer.AttribIfNotDefault("title", self.Model.LinkTitle(context))
writer.AttribIfNotDefault("rel", self.Model.LinkRel(context))
content := self.Model.LinkContent(context)
if content != nil {
err = content.Render(context, writer)
}
}
writer.ForceCloseTag() // a
return err
}
func (self *Checkbox) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("input").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("type", "checkbox")
writer.Attrib("name", self.Name)
writer.Attrib("value", "true")
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
if self.Checked {
writer.Attrib("checked", "checked")
}
writer.CloseTag()
if self.Label != "" {
writer.OpenTag("label").Attrib("for", self.id).Content(self.Label).CloseTag()
}
return nil
}
func (self *List) Render(context *Context, writer *utils.XMLWriter) (err error) {
if self.Ordered {
writer.OpenTag("ol").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("start", self.OrderOffset+1)
} else {
writer.OpenTag("ul").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
}
if self.Model != nil {
numItems := self.Model.NumItems()
for i := 0; i < numItems; i++ {
writer.OpenTag("li").Attrib("id", self.id, "_", i)
view, err := self.Model.ItemView(i, context)
if view != nil && err == nil {
view.Init(view)
err = view.Render(context, writer)
}
if err != nil {
return err
}
writer.ForceCloseTag() // li
}
}
writer.ForceCloseTag() // ol/ul
return nil
}
func (self *Select) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("select").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("name", self.Name)
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
size := self.Size
if self.Model != nil {
numOptions := self.Model.NumOptions()
if size == 0 {
size = numOptions
}
writer.Attrib("size", size)
for i := 0; i < numOptions; i++ {
writer.OpenTag("option")
writer.AttribIfNotDefault("value", self.Model.Value(i))
if self.Model.Selected(i) {
writer.Attrib("selected", "selected")
}
if self.Model.Disabled(i) {
writer.Attrib("disabled", "disabled")
}
err = self.Model.RenderItem(i, context, writer)
if err != nil {
return err
}
writer.CloseTag() // option
}
} else {
writer.Attrib("size", size)
}
writer.CloseTag() // select
return nil
}
func (self *Button) Render(context *Context, writer *utils.XMLWriter) (err error) {
if self.Submit {
writer.OpenTag("input").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("type", "submit")
writer.AttribIfNotDefault("name", self.Name)
writer.AttribIfNotDefault("value", self.Value)
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
writer.AttribIfNotDefault("tabindex", self.TabIndex)
if self.OnClickConfirm != "" {
writer.Attrib("onclick", "return confirm('", self.OnClickConfirm, "');")
} else {
writer.AttribIfNotDefault("onclick", self.OnClick)
}
writer.CloseTag()
} else {
writer.OpenTag("button").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("type", "button")
writer.AttribIfNotDefault("name", self.Name)
writer.AttribIfNotDefault("value", self.Value)
if self.Disabled {
writer.Attrib("disabled", "disabled")
}
writer.AttribIfNotDefault("tabindex", self.TabIndex)
if self.OnClickConfirm != "" {
writer.Attrib("onclick", "return confirm('", self.OnClickConfirm, "');")
} else {
writer.AttribIfNotDefault("onclick", self.OnClick)
}
if self.Content != nil {
err = self.Content.Render(context, writer)
}
writer.ForceCloseTag()
}
return nil
}
func (self *Canvas) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("label").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("width", self.Width).Attrib("height", self.Height)
writer.ForceCloseTag()
return err
}
func (self *Form) Render(context *Context, writer *utils.XMLWriter) (err error) {
if self.OnSubmit == nil {
panic("view.Form.OnSubmit must not be nil")
}
layout := self.GetLayout()
if layout == nil {
panic("view.Form.GetLayout() returned nil")
}
fieldFactory := self.GetFieldFactory()
if fieldFactory == nil {
panic("view.Form.GetFieldFactory() returned nil")
}
var formModel interface{}
var hasErrors bool
content := Views{&HiddenInput{Name: FormIDName, Value: self.FormID}}
isPost := self.IsPost(context)
if self.GetModel == nil {
submitButton := self.GetFieldFactory().NewSubmitButton(self.GetSubmitButtonText(), self.SubmitButtonConfirm, self)
content = append(content, submitButton)
} else {
formModel, err = self.GetModel(self, context)
if err != nil {
return err
}
if isPost {
setPostValues := &setPostValuesStructVisitor{
form: self,
formModel: formModel,
context: context,
}
err = model.Visit(formModel, setPostValues)
if err != nil {
return err
}
}
validateAndFormLayout := &validateAndFormLayoutStructVisitor{
form: self,
formLayout: layout,
formModel: formModel,
formContent: &content,
context: context,
isPost: isPost,
}
err = model.Visit(formModel, validateAndFormLayout)
if err != nil {
return err
}
hasErrors = len(validateAndFormLayout.fieldValidationErrors) > 0 || len(validateAndFormLayout.generalValidationErrors) > 0
}
if isPost && !hasErrors {
message, redirect, err := self.OnSubmit(self, formModel, context)
if err == nil {
if redirect == nil {
redirect = self.Redirect
}
if redirect != nil {
return Redirect(redirect.URL(context.PathArgs...))
}
if message == "" {
message = self.SuccessMessage
}
if message != "" {
self.GetLayout().SubmitSuccess(message, self, context, &content)
}
} else {
if message == "" {
message = err.Error()
}
self.GetLayout().SubmitError(message, self, context, &content)
}
}
// Render HTML form element
method := strings.ToUpper(self.Method)
if method == "" {
method = "POST"
}
action := self.Action
if action == "" {
action = "."
if i := strings.Index(context.Request.RequestURI, "?"); i != -1 {
action += context.Request.RequestURI[i:]
}
}
// Hack: Value of hidden input FormIDName is not available when
// enctype is multipart/form-data (bug?), so pass the form id as
// URL parameter
if self.Enctype == MultipartFormData && context.Request.Method != "POST" {
action = utils.AddUrlParam(action, FormIDName, self.FormID)
}
writer.OpenTag("form").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
writer.Attrib("method", method)
writer.Attrib("action", action)
writer.AttribIfNotDefault("enctype", self.Enctype)
if len(content) > 0 {
content.Init(content)
err = content.Render(context, writer)
if err != nil {
return err
}
}
writer.ForceCloseTag() // form
return nil
}
func (self *Menu) Render(context *Context, writer *utils.XMLWriter) (err error) {
writer.OpenTag("ul").Attrib("id", self.id).AttribIfNotDefault("class", self.Class)
requestURL := context.RequestURL()
// Find active item
activeIndex := -1
if self.ActiveItemClass != "" {
// First try exact URL match
for i := range self.Items {
url := self.Items[i].URL(context.PathArgs...)
if url == requestURL {
activeIndex = i
break
}
}
// If no exact URL match is found, search for sub pages
if activeIndex == -1 {
for i := range self.Items {
url := self.Items[i].URL(context.PathArgs...)
if strings.HasPrefix(requestURL, url) {
activeIndex = i
// todo
// not perfect, what if homepage matches first, but other matches better?
}
}
}
}
for i := range self.Items {
index := i
if self.Reverse {
index = len(self.Items) - 1 - i
}
itemClass := self.ItemClass
linkModel := self.Items[index]
url := linkModel.URL(context.PathArgs...)
// use i instead of index
if i == activeIndex {
itemClass += " " + self.ActiveItemClass
}
writer.OpenTag("li").Attrib("id", self.id, "_", index).AttribIfNotDefault("class", itemClass)
if i > 0 && self.BetweenItems != "" {
writer.Content(self.BetweenItems)
}
writer.OpenTag("a")
writer.Attrib("href", url)
writer.AttribIfNotDefault("title", linkModel.LinkTitle(context))
writer.AttribIfNotDefault("rel", linkModel.LinkRel(context))
content := linkModel.LinkContent(context)
if content != nil {
err = content.Render(context, writer)
if err != nil {
return err
}
}
writer.ForceCloseTag() // a
writer.ForceCloseTag() // li
}
writer.ForceCloseTag() // ul
return nil
}