Golang XMLWriter.Attrib方法代码示例

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 *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 *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 *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 *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 *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 *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 *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 *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 *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 *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
}

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 *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
}