iframe.go

Documentation: golang.org/x/tools/present

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package present
     6  
     7  import (
     8  	"fmt"
     9  	"strings"
    10  )
    11  
    12  func init() {
    13  	Register("iframe", parseIframe)
    14  }
    15  
    16  type Iframe struct {
    17  	Cmd    string // original command from present source
    18  	URL    string
    19  	Width  int
    20  	Height int
    21  }
    22  
    23  func (i Iframe) PresentCmd() string   { return i.Cmd }
    24  func (i Iframe) TemplateName() string { return "iframe" }
    25  
    26  func parseIframe(ctx *Context, fileName string, lineno int, text string) (Elem, error) {
    27  	args := strings.Fields(text)
    28  	if len(args) < 2 {
    29  		return nil, fmt.Errorf("incorrect iframe invocation: %q", text)
    30  	}
    31  	i := Iframe{Cmd: text, URL: args[1]}
    32  	a, err := parseArgs(fileName, lineno, args[2:])
    33  	if err != nil {
    34  		return nil, err
    35  	}
    36  	switch len(a) {
    37  	case 0:
    38  		// no size parameters
    39  	case 2:
    40  		if v, ok := a[0].(int); ok {
    41  			i.Height = v
    42  		}
    43  		if v, ok := a[1].(int); ok {
    44  			i.Width = v
    45  		}
    46  	default:
    47  		return nil, fmt.Errorf("incorrect iframe invocation: %q", text)
    48  	}
    49  	return i, nil
    50  }
    51
View as plain text